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Commit c5473c21 by Enrico Pozzobon
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Merge branch 'rhys'

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ace/Implementations/crypto_aead/aceae128v1/rhys/ace.h 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LWCRYPTO_ACE_H
#define LWCRYPTO_ACE_H
#include "aead-common.h"
/**
* \file ace.h
* \brief ACE authenticated encryption algorithm.
*
* ACE is an authenticated encryption algorithm with a 128-bit key,
* a 128-bit nonce, and a 128-bit tag. It uses a duplex construction
* on top of a 320-bit permutation. The permutation is a generalised
* version of sLiSCP-light, extended from 256 bits to 320 bits.
* ACE also has a companion hash algorithm with a 256-bit output.
*
* References: https://uwaterloo.ca/communications-security-lab/lwc/ace
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Size of the key for ACE.
*/
#define ACE_KEY_SIZE 16
/**
* \brief Size of the authentication tag for ACE.
*/
#define ACE_TAG_SIZE 16
/**
* \brief Size of the nonce for ACE.
*/
#define ACE_NONCE_SIZE 16
/**
* \brief Size of the hash output for ACE-HASH.
*/
#define ACE_HASH_SIZE 32
/**
* \brief Meta-information block for the ACE cipher.
*/
extern aead_cipher_t const ace_cipher;
/**
* \brief Meta-information block for the ACE-HASH hash algorithm.
*/
extern aead_hash_algorithm_t const ace_hash_algorithm;
/**
* \brief State information for the ACE-HASH incremental hash mode.
*/
typedef union
{
struct {
unsigned char state[40]; /**< Current hash state */
unsigned char count; /**< Number of bytes in the current block */
} s; /**< State */
unsigned long long align; /**< For alignment of this structure */
} ace_hash_state_t;
/**
* \brief Encrypts and authenticates a packet with ACE.
*
* \param c Buffer to receive the output.
* \param clen On exit, set to the length of the output which includes
* the ciphertext and the 16 byte authentication tag.
* \param m Buffer that contains the plaintext message to encrypt.
* \param mlen Length of the plaintext message in bytes.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param nsec Secret nonce - not used by this algorithm.
* \param npub Points to the public nonce for the packet which must
* be 16 bytes in length.
* \param k Points to the 16 bytes of the key to use to encrypt the packet.
*
* \return 0 on success, or a negative value if there was an error in
* the parameters.
*
* \sa ace_aead_decrypt()
*/
int ace_aead_encrypt
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Decrypts and authenticates a packet with ACE.
*
* \param m Buffer to receive the plaintext message on output.
* \param mlen Receives the length of the plaintext message on output.
* \param nsec Secret nonce - not used by this algorithm.
* \param c Buffer that contains the ciphertext and authentication
* tag to decrypt.
* \param clen Length of the input data in bytes, which includes the
* ciphertext and the 16 byte authentication tag.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param npub Points to the public nonce for the packet which must
* be 16 bytes in length.
* \param k Points to the 16 bytes of the key to use to decrypt the packet.
*
* \return 0 on success, -1 if the authentication tag was incorrect,
* or some other negative number if there was an error in the parameters.
*
* \sa ace_aead_encrypt()
*/
int ace_aead_decrypt
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Hashes a block of input data with ACE-HASH to generate a hash value.
*
* \param out Buffer to receive the hash output which must be at least
* ACE_HASH_SIZE bytes in length.
* \param in Points to the input data to be hashed.
* \param inlen Length of the input data in bytes.
*
* \return Returns zero on success or -1 if there was an error in the
* parameters.
*/
int ace_hash
(unsigned char *out, const unsigned char *in, unsigned long long inlen);
/**
* \brief Initializes the state for an ACE-HASH hashing operation.
*
* \param state Hash state to be initialized.
*
* \sa ace_hash_update(), ace_hash_finalize(), ace_hash()
*/
void ace_hash_init(ace_hash_state_t *state);
/**
* \brief Updates the ACE-HASH state with more input data.
*
* \param state Hash state to be updated.
* \param in Points to the input data to be incorporated into the state.
* \param inlen Length of the input data to be incorporated into the state.
*
* \sa ace_hash_init(), ace_hash_finalize()
*/
void ace_hash_update
(ace_hash_state_t *state, const unsigned char *in,
unsigned long long inlen);
/**
* \brief Returns the final hash value from an ACE-HASH hashing operation.
*
* \param state Hash state to be finalized.
* \param out Points to the output buffer to receive the 32-byte hash value.
*
* \sa ace_hash_init(), ace_hash_update()
*/
void ace_hash_finalize(ace_hash_state_t *state, unsigned char *out);
#ifdef __cplusplus
}
#endif
#endif
ace/Implementations/crypto_aead/aceae128v1/rhys/aead-common.c 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "aead-common.h"
int aead_check_tag
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = (accum - 1) >> 8;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
int aead_check_tag_precheck
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size, int precheck)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = ((accum - 1) >> 8) & precheck;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
ace/Implementations/crypto_aead/aceae128v1/rhys/aead-common.h 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LWCRYPTO_AEAD_COMMON_H
#define LWCRYPTO_AEAD_COMMON_H
#include <stddef.h>
/**
* \file aead-common.h
* \brief Definitions that are common across AEAD schemes.
*
* AEAD stands for "Authenticated Encryption with Associated Data".
* It is a standard API pattern for securely encrypting and
* authenticating packets of data.
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Encrypts and authenticates a packet with an AEAD scheme.
*
* \param c Buffer to receive the output.
* \param clen On exit, set to the length of the output which includes
* the ciphertext and the authentication tag.
* \param m Buffer that contains the plaintext message to encrypt.
* \param mlen Length of the plaintext message in bytes.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param nsec Secret nonce - normally not used by AEAD schemes.
* \param npub Points to the public nonce for the packet.
* \param k Points to the key to use to encrypt the packet.
*
* \return 0 on success, or a negative value if there was an error in
* the parameters.
*/
typedef int (*aead_cipher_encrypt_t)
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Decrypts and authenticates a packet with an AEAD scheme.
*
* \param m Buffer to receive the plaintext message on output.
* \param mlen Receives the length of the plaintext message on output.
* \param nsec Secret nonce - normally not used by AEAD schemes.
* \param c Buffer that contains the ciphertext and authentication
* tag to decrypt.
* \param clen Length of the input data in bytes, which includes the
* ciphertext and the authentication tag.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param npub Points to the public nonce for the packet.
* \param k Points to the key to use to decrypt the packet.
*
* \return 0 on success, -1 if the authentication tag was incorrect,
* or some other negative number if there was an error in the parameters.
*/
typedef int (*aead_cipher_decrypt_t)
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Hashes a block of input data.
*
* \param out Buffer to receive the hash output.
* \param in Points to the input data to be hashed.
* \param inlen Length of the input data in bytes.
*
* \return Returns zero on success or -1 if there was an error in the
* parameters.
*/
typedef int (*aead_hash_t)
(unsigned char *out, const unsigned char *in, unsigned long long inlen);
/**
* \brief Initializes the state for a hashing operation.
*
* \param state Hash state to be initialized.
*/
typedef void (*aead_hash_init_t)(void *state);
/**
* \brief Updates a hash state with more input data.
*
* \param state Hash state to be updated.
* \param in Points to the input data to be incorporated into the state.
* \param inlen Length of the input data to be incorporated into the state.
*/
typedef void (*aead_hash_update_t)
(void *state, const unsigned char *in, unsigned long long inlen);
/**
* \brief Returns the final hash value from a hashing operation.
*
* \param Hash state to be finalized.
* \param out Points to the output buffer to receive the hash value.
*/
typedef void (*aead_hash_finalize_t)(void *state, unsigned char *out);
/**
* \brief Aborbs more input data into an XOF state.
*
* \param state XOF state to be updated.
* \param in Points to the input data to be absorbed into the state.
* \param inlen Length of the input data to be absorbed into the state.
*
* \sa ascon_xof_init(), ascon_xof_squeeze()
*/
typedef void (*aead_xof_absorb_t)
(void *state, const unsigned char *in, unsigned long long inlen);
/**
* \brief Squeezes output data from an XOF state.
*
* \param state XOF state to squeeze the output data from.
* \param out Points to the output buffer to receive the squeezed data.
* \param outlen Number of bytes of data to squeeze out of the state.
*/
typedef void (*aead_xof_squeeze_t)
(void *state, unsigned char *out, unsigned long long outlen);
/**
* \brief No special AEAD features.
*/
#define AEAD_FLAG_NONE 0x0000
/**
* \brief The natural byte order of the AEAD cipher is little-endian.
*
* If this flag is not present, then the natural byte order of the
* AEAD cipher should be assumed to be big-endian.
*
* The natural byte order may be useful when formatting packet sequence
* numbers as nonces. The application needs to know whether the sequence
* number should be packed into the leading or trailing bytes of the nonce.
*/
#define AEAD_FLAG_LITTLE_ENDIAN 0x0001
/**
* \brief Meta-information about an AEAD cipher.
*/
typedef struct
{
const char *name; /**< Name of the cipher */
unsigned key_len; /**< Length of the key in bytes */
unsigned nonce_len; /**< Length of the nonce in bytes */
unsigned tag_len; /**< Length of the tag in bytes */
unsigned flags; /**< Flags for extra features */
aead_cipher_encrypt_t encrypt; /**< AEAD encryption function */
aead_cipher_decrypt_t decrypt; /**< AEAD decryption function */
} aead_cipher_t;
/**
* \brief Meta-information about a hash algorithm that is related to an AEAD.
*
* Regular hash algorithms should provide the "hash", "init", "update",
* and "finalize" functions. Extensible Output Functions (XOF's) should
* proivde the "hash", "init", "absorb", and "squeeze" functions.
*/
typedef struct
{
const char *name; /**< Name of the hash algorithm */
size_t state_size; /**< Size of the incremental state structure */
unsigned hash_len; /**< Length of the hash in bytes */
unsigned flags; /**< Flags for extra features */
aead_hash_t hash; /**< All in one hashing function */
aead_hash_init_t init; /**< Incremental hash/XOF init function */
aead_hash_update_t update; /**< Incremental hash update function */
aead_hash_finalize_t finalize; /**< Incremental hash finalize function */
aead_xof_absorb_t absorb; /**< Incremental XOF absorb function */
aead_xof_squeeze_t squeeze; /**< Incremental XOF squeeze function */
} aead_hash_algorithm_t;
/**
* \brief Check an authentication tag in constant time.
*
* \param plaintext Points to the plaintext data.
* \param plaintext_len Length of the plaintext in bytes.
* \param tag1 First tag to compare.
* \param tag2 Second tag to compare.
* \param tag_len Length of the tags in bytes.
*
* \return Returns -1 if the tag check failed or 0 if the check succeeded.
*
* If the tag check fails, then the \a plaintext will also be zeroed to
* prevent it from being used accidentally by the application when the
* ciphertext was invalid.
*/
int aead_check_tag
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned tag_len);
/**
* \brief Check an authentication tag in constant time with a previous check.
*
* \param plaintext Points to the plaintext data.
* \param plaintext_len Length of the plaintext in bytes.
* \param tag1 First tag to compare.
* \param tag2 Second tag to compare.
* \param tag_len Length of the tags in bytes.
* \param precheck Set to -1 if previous check succeeded or 0 if it failed.
*
* \return Returns -1 if the tag check failed or 0 if the check succeeded.
*
* If the tag check fails, then the \a plaintext will also be zeroed to
* prevent it from being used accidentally by the application when the
* ciphertext was invalid.
*
* This version can be used to incorporate other information about the
* correctness of the plaintext into the final result.
*/
int aead_check_tag_precheck
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned tag_len, int precheck);
#ifdef __cplusplus
}
#endif
#endif
ace/Implementations/crypto_aead/aceae128v1/rhys/api.h 0 → 100644
#define CRYPTO_KEYBYTES 16
#define CRYPTO_NSECBYTES 0
#define CRYPTO_NPUBBYTES 16
#define CRYPTO_ABYTES 16
#define CRYPTO_NOOVERLAP 1
ace/Implementations/crypto_aead/aceae128v1/rhys/encrypt.c 0 → 100644
#include "ace.h"
int crypto_aead_encrypt
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k)
{
return ace_aead_encrypt
(c, clen, m, mlen, ad, adlen, nsec, npub, k);
}
int crypto_aead_decrypt
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k)
{
return ace_aead_decrypt
(m, mlen, nsec, c, clen, ad, adlen, npub, k);
}
ace/Implementations/crypto_aead/aceae128v1/rhys/internal-sliscp-light.h 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LW_INTERNAL_SLISCP_LIGHT_H
#define LW_INTERNAL_SLISCP_LIGHT_H
/**
* \file internal-sliscp-light.h
* \brief sLiSCP-light permutation
*
* There are three variants of sLiSCP-light in use in the NIST submissions:
*
* \li sLiSCP-light-256 with a 256-bit block size, used in SPIX and SpoC.
* \li sLiSCP-light-192 with a 192-bit block size, used in SpoC.
* \li sLiSCP-light-320 with a 320-bit block size, used in ACE.
*
* References: https://uwaterloo.ca/communications-security-lab/lwc/ace,
* https://uwaterloo.ca/communications-security-lab/lwc/spix,
* https://uwaterloo.ca/communications-security-lab/lwc/spoc
*/
#include "internal-util.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Size of the state for sLiSCP-light-256.
*/
#define SLISCP_LIGHT256_STATE_SIZE 32
/**
* \brief Size of the state for sLiSCP-light-192.
*/
#define SLISCP_LIGHT192_STATE_SIZE 24
/**
* \brief Size of the state for sLiSCP-light-320.
*/
#define SLISCP_LIGHT320_STATE_SIZE 40
/**
* \brief Performs the sLiSCP-light permutation on a 256-bit block.
*
* \param block Points to the block to be permuted.
* \param rounds Number of rounds to be performed, usually 9 or 18.
*
* The bytes of the block are assumed to be rearranged to match the
* requirements of the SPIX cipher. SPIX places the rate bytes at
* positions 8, 9, 10, 11, 24, 25, 26, and 27.
*
* This function assumes that bytes 24-27 have been pre-swapped with
* bytes 12-15 so that the rate portion of the state is contiguous.
*
* The sliscp_light256_swap_spix() function can be used to switch
* between the canonical order and the pre-swapped order.
*
* \sa sliscp_light256_swap_spix()
*/
void sliscp_light256_permute_spix(unsigned char block[32], unsigned rounds);
/**
* \brief Swaps rate bytes in a sLiSCP-light 256-bit block for SPIX.
*
* \param block Points to the block to be rate-swapped.
*
* \sa sliscp_light256_permute_spix()
*/
void sliscp_light256_swap_spix(unsigned char block[32]);
/**
* \brief Performs the sLiSCP-light permutation on a 256-bit block.
*
* \param block Points to the block to be permuted.
* \param rounds Number of rounds to be performed, usually 9 or 18.
*
* The bytes of the block are assumed to be rearranged to match the
* requirements of the SpoC-128 cipher. SpoC-128 interleaves the
* rate bytes and the mask bytes. This version assumes that the
* rate and mask are in contiguous bytes of the state.
*
* SpoC-128 absorbs bytes using the mask bytes of the state at offsets
* 8, 9, 10, 11, 12, 13, 14, 15, 24, 25, 26, 27, 28, 29, 30, and 31.
* It squeezes bytes using the rate bytes of the state at offsets
* 0, 1, 2, 3, 4, 5, 6, 7, 16, 17, 18, 19, 20, 21, 22, and 23.
*
* This function assumes that bytes 8-15 have been pre-swapped with 16-23
* so that the rate and mask portions of the state are contiguous.
*
* The sliscp_light256_swap_spoc() function can be used to switch
* between the canonical order and the pre-swapped order.
*
* \sa sliscp_light256_swap_spoc()
*/
void sliscp_light256_permute_spoc(unsigned char block[32], unsigned rounds);
/**
* \brief Swaps rate bytes in a sLiSCP-light 256-bit block for SpoC-128.
*
* \param block Points to the block to be rate-swapped.
*
* \sa sliscp_light256_permute_spoc()
*/
void sliscp_light256_swap_spoc(unsigned char block[32]);
/**
* \brief Performs the sLiSCP-light permutation on a 192-bit block.
*
* \param block Points to the block to be permuted.
*/
void sliscp_light192_permute(unsigned char block[24]);
/**
* \brief Performs the sLiSCP-light permutation on a 320-bit block.
*
* \param block Points to the block to be permuted.
*
* The ACE specification refers to this permutation as "ACE" but that
* can be confused with the name of the AEAD mode so we call this
* permutation "sLiSCP-light-320" instead.
*
* ACE absorbs and squeezes data at the rate bytes 0, 1, 2, 3, 16, 17, 18, 19.
* Efficiency can suffer because of the discontinuity in rate byte positions.
*
* To counteract this, we assume that the input to the permutation has been
* pre-swapped: bytes 4, 5, 6, 7 are swapped with bytes 16, 17, 18, 19 so
* that the rate is contiguous at the start of the state.
*
* The sliscp_light320_swap() function can be used to switch between the
* canonical order and the pre-swapped order.
*
* \sa sliscp_light320_swap()
*/
void sliscp_light320_permute(unsigned char block[40]);
/**
* \brief Swaps rate bytes in a sLiSCP-light 320-bit block.
*
* \param block Points to the block to be rate-swapped.
*
* \sa sliscp_light320_permute()
*/
void sliscp_light320_swap(unsigned char block[40]);
#ifdef __cplusplus
}
#endif
#endif
ascon/Implementations/crypto_aead/ascon128av12/rhys/aead-common.c 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "aead-common.h"
int aead_check_tag
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = (accum - 1) >> 8;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
int aead_check_tag_precheck
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size, int precheck)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = ((accum - 1) >> 8) & precheck;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
ascon/Implementations/crypto_aead/ascon128av12/rhys/aead-common.h 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LWCRYPTO_AEAD_COMMON_H
#define LWCRYPTO_AEAD_COMMON_H
#include <stddef.h>
/**
* \file aead-common.h
* \brief Definitions that are common across AEAD schemes.
*
* AEAD stands for "Authenticated Encryption with Associated Data".
* It is a standard API pattern for securely encrypting and
* authenticating packets of data.
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Encrypts and authenticates a packet with an AEAD scheme.
*
* \param c Buffer to receive the output.
* \param clen On exit, set to the length of the output which includes
* the ciphertext and the authentication tag.
* \param m Buffer that contains the plaintext message to encrypt.
* \param mlen Length of the plaintext message in bytes.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param nsec Secret nonce - normally not used by AEAD schemes.
* \param npub Points to the public nonce for the packet.
* \param k Points to the key to use to encrypt the packet.
*
* \return 0 on success, or a negative value if there was an error in
* the parameters.
*/
typedef int (*aead_cipher_encrypt_t)
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Decrypts and authenticates a packet with an AEAD scheme.
*
* \param m Buffer to receive the plaintext message on output.
* \param mlen Receives the length of the plaintext message on output.
* \param nsec Secret nonce - normally not used by AEAD schemes.
* \param c Buffer that contains the ciphertext and authentication
* tag to decrypt.
* \param clen Length of the input data in bytes, which includes the
* ciphertext and the authentication tag.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param npub Points to the public nonce for the packet.
* \param k Points to the key to use to decrypt the packet.
*
* \return 0 on success, -1 if the authentication tag was incorrect,
* or some other negative number if there was an error in the parameters.
*/
typedef int (*aead_cipher_decrypt_t)
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Hashes a block of input data.
*
* \param out Buffer to receive the hash output.
* \param in Points to the input data to be hashed.
* \param inlen Length of the input data in bytes.
*
* \return Returns zero on success or -1 if there was an error in the
* parameters.
*/
typedef int (*aead_hash_t)
(unsigned char *out, const unsigned char *in, unsigned long long inlen);
/**
* \brief Initializes the state for a hashing operation.
*
* \param state Hash state to be initialized.
*/
typedef void (*aead_hash_init_t)(void *state);
/**
* \brief Updates a hash state with more input data.
*
* \param state Hash state to be updated.
* \param in Points to the input data to be incorporated into the state.
* \param inlen Length of the input data to be incorporated into the state.
*/
typedef void (*aead_hash_update_t)
(void *state, const unsigned char *in, unsigned long long inlen);
/**
* \brief Returns the final hash value from a hashing operation.
*
* \param Hash state to be finalized.
* \param out Points to the output buffer to receive the hash value.
*/
typedef void (*aead_hash_finalize_t)(void *state, unsigned char *out);
/**
* \brief Aborbs more input data into an XOF state.
*
* \param state XOF state to be updated.
* \param in Points to the input data to be absorbed into the state.
* \param inlen Length of the input data to be absorbed into the state.
*
* \sa ascon_xof_init(), ascon_xof_squeeze()
*/
typedef void (*aead_xof_absorb_t)
(void *state, const unsigned char *in, unsigned long long inlen);
/**
* \brief Squeezes output data from an XOF state.
*
* \param state XOF state to squeeze the output data from.
* \param out Points to the output buffer to receive the squeezed data.
* \param outlen Number of bytes of data to squeeze out of the state.
*/
typedef void (*aead_xof_squeeze_t)
(void *state, unsigned char *out, unsigned long long outlen);
/**
* \brief No special AEAD features.
*/
#define AEAD_FLAG_NONE 0x0000
/**
* \brief The natural byte order of the AEAD cipher is little-endian.
*
* If this flag is not present, then the natural byte order of the
* AEAD cipher should be assumed to be big-endian.
*
* The natural byte order may be useful when formatting packet sequence
* numbers as nonces. The application needs to know whether the sequence
* number should be packed into the leading or trailing bytes of the nonce.
*/
#define AEAD_FLAG_LITTLE_ENDIAN 0x0001
/**
* \brief Meta-information about an AEAD cipher.
*/
typedef struct
{
const char *name; /**< Name of the cipher */
unsigned key_len; /**< Length of the key in bytes */
unsigned nonce_len; /**< Length of the nonce in bytes */
unsigned tag_len; /**< Length of the tag in bytes */
unsigned flags; /**< Flags for extra features */
aead_cipher_encrypt_t encrypt; /**< AEAD encryption function */
aead_cipher_decrypt_t decrypt; /**< AEAD decryption function */
} aead_cipher_t;
/**
* \brief Meta-information about a hash algorithm that is related to an AEAD.
*
* Regular hash algorithms should provide the "hash", "init", "update",
* and "finalize" functions. Extensible Output Functions (XOF's) should
* proivde the "hash", "init", "absorb", and "squeeze" functions.
*/
typedef struct
{
const char *name; /**< Name of the hash algorithm */
size_t state_size; /**< Size of the incremental state structure */
unsigned hash_len; /**< Length of the hash in bytes */
unsigned flags; /**< Flags for extra features */
aead_hash_t hash; /**< All in one hashing function */
aead_hash_init_t init; /**< Incremental hash/XOF init function */
aead_hash_update_t update; /**< Incremental hash update function */
aead_hash_finalize_t finalize; /**< Incremental hash finalize function */
aead_xof_absorb_t absorb; /**< Incremental XOF absorb function */
aead_xof_squeeze_t squeeze; /**< Incremental XOF squeeze function */
} aead_hash_algorithm_t;
/**
* \brief Check an authentication tag in constant time.
*
* \param plaintext Points to the plaintext data.
* \param plaintext_len Length of the plaintext in bytes.
* \param tag1 First tag to compare.
* \param tag2 Second tag to compare.
* \param tag_len Length of the tags in bytes.
*
* \return Returns -1 if the tag check failed or 0 if the check succeeded.
*
* If the tag check fails, then the \a plaintext will also be zeroed to
* prevent it from being used accidentally by the application when the
* ciphertext was invalid.
*/
int aead_check_tag
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned tag_len);
/**
* \brief Check an authentication tag in constant time with a previous check.
*
* \param plaintext Points to the plaintext data.
* \param plaintext_len Length of the plaintext in bytes.
* \param tag1 First tag to compare.
* \param tag2 Second tag to compare.
* \param tag_len Length of the tags in bytes.
* \param precheck Set to -1 if previous check succeeded or 0 if it failed.
*
* \return Returns -1 if the tag check failed or 0 if the check succeeded.
*
* If the tag check fails, then the \a plaintext will also be zeroed to
* prevent it from being used accidentally by the application when the
* ciphertext was invalid.
*
* This version can be used to incorporate other information about the
* correctness of the plaintext into the final result.
*/
int aead_check_tag_precheck
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned tag_len, int precheck);
#ifdef __cplusplus
}
#endif
#endif
ascon/Implementations/crypto_aead/ascon128av12/rhys/api.h 0 → 100644
#define CRYPTO_KEYBYTES 16
#define CRYPTO_NSECBYTES 0
#define CRYPTO_NPUBBYTES 16
#define CRYPTO_ABYTES 16
#define CRYPTO_NOOVERLAP 1
ascon/Implementations/crypto_aead/ascon128av12/rhys/encrypt.c 0 → 100644
#include "ascon128.h"
int crypto_aead_encrypt
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k)
{
return ascon128a_aead_encrypt
(c, clen, m, mlen, ad, adlen, nsec, npub, k);
}
int crypto_aead_decrypt
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k)
{
return ascon128a_aead_decrypt
(m, mlen, nsec, c, clen, ad, adlen, npub, k);
}
ascon/Implementations/crypto_aead/ascon128av12/rhys/internal-ascon.c 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "internal-ascon.h"
void ascon_permute(ascon_state_t *state, uint8_t first_round)
{
uint64_t t0, t1, t2, t3, t4;
#if defined(LW_UTIL_LITTLE_ENDIAN)
uint64_t x0 = be_load_word64(state->B);
uint64_t x1 = be_load_word64(state->B + 8);
uint64_t x2 = be_load_word64(state->B + 16);
uint64_t x3 = be_load_word64(state->B + 24);
uint64_t x4 = be_load_word64(state->B + 32);
#else
uint64_t x0 = state->S[0];
uint64_t x1 = state->S[1];
uint64_t x2 = state->S[2];
uint64_t x3 = state->S[3];
uint64_t x4 = state->S[4];
#endif
while (first_round < 12) {
/* Add the round constant to the state */
x2 ^= ((0x0F - first_round) << 4) | first_round;
/* Substitution layer - apply the s-box using bit-slicing
* according to the algorithm recommended in the specification */
x0 ^= x4; x4 ^= x3; x2 ^= x1;
t0 = ~x0; t1 = ~x1; t2 = ~x2; t3 = ~x3; t4 = ~x4;
t0 &= x1; t1 &= x2; t2 &= x3; t3 &= x4; t4 &= x0;
x0 ^= t1; x1 ^= t2; x2 ^= t3; x3 ^= t4; x4 ^= t0;
x1 ^= x0; x0 ^= x4; x3 ^= x2; x2 = ~x2;
/* Linear diffusion layer */
x0 ^= rightRotate19_64(x0) ^ rightRotate28_64(x0);
x1 ^= rightRotate61_64(x1) ^ rightRotate39_64(x1);
x2 ^= rightRotate1_64(x2) ^ rightRotate6_64(x2);
x3 ^= rightRotate10_64(x3) ^ rightRotate17_64(x3);
x4 ^= rightRotate7_64(x4) ^ rightRotate41_64(x4);
/* Move onto the next round */
++first_round;
}
#if defined(LW_UTIL_LITTLE_ENDIAN)
be_store_word64(state->B, x0);
be_store_word64(state->B + 8, x1);
be_store_word64(state->B + 16, x2);
be_store_word64(state->B + 24, x3);
be_store_word64(state->B + 32, x4);
#else
state->S[0] = x0;
state->S[1] = x1;
state->S[2] = x2;
state->S[3] = x3;
state->S[4] = x4;
#endif
}
ascon/Implementations/crypto_aead/ascon128av12/rhys/internal-ascon.h 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LW_INTERNAL_ASCON_H
#define LW_INTERNAL_ASCON_H
#include "internal-util.h"
/**
* \file internal-ascon.h
* \brief Internal implementation of the ASCON permutation.
*
* References: http://competitions.cr.yp.to/round3/asconv12.pdf,
* http://ascon.iaik.tugraz.at/
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Structure of the internal state of the ASCON permutation.
*/
typedef union
{
uint64_t S[5]; /**< Words of the state */
uint8_t B[40]; /**< Bytes of the state */
} ascon_state_t;
/**
* \brief Permutes the ASCON state.
*
* \param state The ASCON state to be permuted.
* \param first_round The first round (of 12) to be performed; 0, 4, or 6.
*
* The input and output \a state will be in big-endian byte order.
*/
void ascon_permute(ascon_state_t *state, uint8_t first_round);
#ifdef __cplusplus
}
#endif
#endif
ascon/Implementations/crypto_aead/ascon128v12/rhys/aead-common.c 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "aead-common.h"
int aead_check_tag
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = (accum - 1) >> 8;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
int aead_check_tag_precheck
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size, int precheck)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = ((accum - 1) >> 8) & precheck;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
ascon/Implementations/crypto_aead/ascon128v12/rhys/aead-common.h 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LWCRYPTO_AEAD_COMMON_H
#define LWCRYPTO_AEAD_COMMON_H
#include <stddef.h>
/**
* \file aead-common.h
* \brief Definitions that are common across AEAD schemes.
*
* AEAD stands for "Authenticated Encryption with Associated Data".
* It is a standard API pattern for securely encrypting and
* authenticating packets of data.
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Encrypts and authenticates a packet with an AEAD scheme.
*
* \param c Buffer to receive the output.
* \param clen On exit, set to the length of the output which includes
* the ciphertext and the authentication tag.
* \param m Buffer that contains the plaintext message to encrypt.
* \param mlen Length of the plaintext message in bytes.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param nsec Secret nonce - normally not used by AEAD schemes.
* \param npub Points to the public nonce for the packet.
* \param k Points to the key to use to encrypt the packet.
*
* \return 0 on success, or a negative value if there was an error in
* the parameters.
*/
typedef int (*aead_cipher_encrypt_t)
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Decrypts and authenticates a packet with an AEAD scheme.
*
* \param m Buffer to receive the plaintext message on output.
* \param mlen Receives the length of the plaintext message on output.
* \param nsec Secret nonce - normally not used by AEAD schemes.
* \param c Buffer that contains the ciphertext and authentication
* tag to decrypt.
* \param clen Length of the input data in bytes, which includes the
* ciphertext and the authentication tag.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param npub Points to the public nonce for the packet.
* \param k Points to the key to use to decrypt the packet.
*
* \return 0 on success, -1 if the authentication tag was incorrect,
* or some other negative number if there was an error in the parameters.
*/
typedef int (*aead_cipher_decrypt_t)
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Hashes a block of input data.
*
* \param out Buffer to receive the hash output.
* \param in Points to the input data to be hashed.
* \param inlen Length of the input data in bytes.
*
* \return Returns zero on success or -1 if there was an error in the
* parameters.
*/
typedef int (*aead_hash_t)
(unsigned char *out, const unsigned char *in, unsigned long long inlen);
/**
* \brief Initializes the state for a hashing operation.
*
* \param state Hash state to be initialized.
*/
typedef void (*aead_hash_init_t)(void *state);
/**
* \brief Updates a hash state with more input data.
*
* \param state Hash state to be updated.
* \param in Points to the input data to be incorporated into the state.
* \param inlen Length of the input data to be incorporated into the state.
*/
typedef void (*aead_hash_update_t)
(void *state, const unsigned char *in, unsigned long long inlen);
/**
* \brief Returns the final hash value from a hashing operation.
*
* \param Hash state to be finalized.
* \param out Points to the output buffer to receive the hash value.
*/
typedef void (*aead_hash_finalize_t)(void *state, unsigned char *out);
/**
* \brief Aborbs more input data into an XOF state.
*
* \param state XOF state to be updated.
* \param in Points to the input data to be absorbed into the state.
* \param inlen Length of the input data to be absorbed into the state.
*
* \sa ascon_xof_init(), ascon_xof_squeeze()
*/
typedef void (*aead_xof_absorb_t)
(void *state, const unsigned char *in, unsigned long long inlen);
/**
* \brief Squeezes output data from an XOF state.
*
* \param state XOF state to squeeze the output data from.
* \param out Points to the output buffer to receive the squeezed data.
* \param outlen Number of bytes of data to squeeze out of the state.
*/
typedef void (*aead_xof_squeeze_t)
(void *state, unsigned char *out, unsigned long long outlen);
/**
* \brief No special AEAD features.
*/
#define AEAD_FLAG_NONE 0x0000
/**
* \brief The natural byte order of the AEAD cipher is little-endian.
*
* If this flag is not present, then the natural byte order of the
* AEAD cipher should be assumed to be big-endian.
*
* The natural byte order may be useful when formatting packet sequence
* numbers as nonces. The application needs to know whether the sequence
* number should be packed into the leading or trailing bytes of the nonce.
*/
#define AEAD_FLAG_LITTLE_ENDIAN 0x0001
/**
* \brief Meta-information about an AEAD cipher.
*/
typedef struct
{
const char *name; /**< Name of the cipher */
unsigned key_len; /**< Length of the key in bytes */
unsigned nonce_len; /**< Length of the nonce in bytes */
unsigned tag_len; /**< Length of the tag in bytes */
unsigned flags; /**< Flags for extra features */
aead_cipher_encrypt_t encrypt; /**< AEAD encryption function */
aead_cipher_decrypt_t decrypt; /**< AEAD decryption function */
} aead_cipher_t;
/**
* \brief Meta-information about a hash algorithm that is related to an AEAD.
*
* Regular hash algorithms should provide the "hash", "init", "update",
* and "finalize" functions. Extensible Output Functions (XOF's) should
* proivde the "hash", "init", "absorb", and "squeeze" functions.
*/
typedef struct
{
const char *name; /**< Name of the hash algorithm */
size_t state_size; /**< Size of the incremental state structure */
unsigned hash_len; /**< Length of the hash in bytes */
unsigned flags; /**< Flags for extra features */
aead_hash_t hash; /**< All in one hashing function */
aead_hash_init_t init; /**< Incremental hash/XOF init function */
aead_hash_update_t update; /**< Incremental hash update function */
aead_hash_finalize_t finalize; /**< Incremental hash finalize function */
aead_xof_absorb_t absorb; /**< Incremental XOF absorb function */
aead_xof_squeeze_t squeeze; /**< Incremental XOF squeeze function */
} aead_hash_algorithm_t;
/**
* \brief Check an authentication tag in constant time.
*
* \param plaintext Points to the plaintext data.
* \param plaintext_len Length of the plaintext in bytes.
* \param tag1 First tag to compare.
* \param tag2 Second tag to compare.
* \param tag_len Length of the tags in bytes.
*
* \return Returns -1 if the tag check failed or 0 if the check succeeded.
*
* If the tag check fails, then the \a plaintext will also be zeroed to
* prevent it from being used accidentally by the application when the
* ciphertext was invalid.
*/
int aead_check_tag
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned tag_len);
/**
* \brief Check an authentication tag in constant time with a previous check.
*
* \param plaintext Points to the plaintext data.
* \param plaintext_len Length of the plaintext in bytes.
* \param tag1 First tag to compare.
* \param tag2 Second tag to compare.
* \param tag_len Length of the tags in bytes.
* \param precheck Set to -1 if previous check succeeded or 0 if it failed.
*
* \return Returns -1 if the tag check failed or 0 if the check succeeded.
*
* If the tag check fails, then the \a plaintext will also be zeroed to
* prevent it from being used accidentally by the application when the
* ciphertext was invalid.
*
* This version can be used to incorporate other information about the
* correctness of the plaintext into the final result.
*/
int aead_check_tag_precheck
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned tag_len, int precheck);
#ifdef __cplusplus
}
#endif
#endif
ascon/Implementations/crypto_aead/ascon128v12/rhys/api.h 0 → 100644
#define CRYPTO_KEYBYTES 16
#define CRYPTO_NSECBYTES 0
#define CRYPTO_NPUBBYTES 16
#define CRYPTO_ABYTES 16
#define CRYPTO_NOOVERLAP 1
ascon/Implementations/crypto_aead/ascon128v12/rhys/encrypt.c 0 → 100644
#include "ascon128.h"
int crypto_aead_encrypt
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k)
{
return ascon128_aead_encrypt
(c, clen, m, mlen, ad, adlen, nsec, npub, k);
}
int crypto_aead_decrypt
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k)
{
return ascon128_aead_decrypt
(m, mlen, nsec, c, clen, ad, adlen, npub, k);
}
ascon/Implementations/crypto_aead/ascon128v12/rhys/internal-ascon.c 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "internal-ascon.h"
void ascon_permute(ascon_state_t *state, uint8_t first_round)
{
uint64_t t0, t1, t2, t3, t4;
#if defined(LW_UTIL_LITTLE_ENDIAN)
uint64_t x0 = be_load_word64(state->B);
uint64_t x1 = be_load_word64(state->B + 8);
uint64_t x2 = be_load_word64(state->B + 16);
uint64_t x3 = be_load_word64(state->B + 24);
uint64_t x4 = be_load_word64(state->B + 32);
#else
uint64_t x0 = state->S[0];
uint64_t x1 = state->S[1];
uint64_t x2 = state->S[2];
uint64_t x3 = state->S[3];
uint64_t x4 = state->S[4];
#endif
while (first_round < 12) {
/* Add the round constant to the state */
x2 ^= ((0x0F - first_round) << 4) | first_round;
/* Substitution layer - apply the s-box using bit-slicing
* according to the algorithm recommended in the specification */
x0 ^= x4; x4 ^= x3; x2 ^= x1;
t0 = ~x0; t1 = ~x1; t2 = ~x2; t3 = ~x3; t4 = ~x4;
t0 &= x1; t1 &= x2; t2 &= x3; t3 &= x4; t4 &= x0;
x0 ^= t1; x1 ^= t2; x2 ^= t3; x3 ^= t4; x4 ^= t0;
x1 ^= x0; x0 ^= x4; x3 ^= x2; x2 = ~x2;
/* Linear diffusion layer */
x0 ^= rightRotate19_64(x0) ^ rightRotate28_64(x0);
x1 ^= rightRotate61_64(x1) ^ rightRotate39_64(x1);
x2 ^= rightRotate1_64(x2) ^ rightRotate6_64(x2);
x3 ^= rightRotate10_64(x3) ^ rightRotate17_64(x3);
x4 ^= rightRotate7_64(x4) ^ rightRotate41_64(x4);
/* Move onto the next round */
++first_round;
}
#if defined(LW_UTIL_LITTLE_ENDIAN)
be_store_word64(state->B, x0);
be_store_word64(state->B + 8, x1);
be_store_word64(state->B + 16, x2);
be_store_word64(state->B + 24, x3);
be_store_word64(state->B + 32, x4);
#else
state->S[0] = x0;
state->S[1] = x1;
state->S[2] = x2;
state->S[3] = x3;
state->S[4] = x4;
#endif
}
ascon/Implementations/crypto_aead/ascon128v12/rhys/internal-ascon.h 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LW_INTERNAL_ASCON_H
#define LW_INTERNAL_ASCON_H
#include "internal-util.h"
/**
* \file internal-ascon.h
* \brief Internal implementation of the ASCON permutation.
*
* References: http://competitions.cr.yp.to/round3/asconv12.pdf,
* http://ascon.iaik.tugraz.at/
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Structure of the internal state of the ASCON permutation.
*/
typedef union
{
uint64_t S[5]; /**< Words of the state */
uint8_t B[40]; /**< Bytes of the state */
} ascon_state_t;
/**
* \brief Permutes the ASCON state.
*
* \param state The ASCON state to be permuted.
* \param first_round The first round (of 12) to be performed; 0, 4, or 6.
*
* The input and output \a state will be in big-endian byte order.
*/
void ascon_permute(ascon_state_t *state, uint8_t first_round);
#ifdef __cplusplus
}
#endif
#endif
ascon/Implementations/crypto_aead/ascon80pqv12/rhys/aead-common.c 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "aead-common.h"
int aead_check_tag
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = (accum - 1) >> 8;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
int aead_check_tag_precheck
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size, int precheck)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = ((accum - 1) >> 8) & precheck;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
ascon/Implementations/crypto_aead/ascon80pqv12/rhys/aead-common.h 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LWCRYPTO_AEAD_COMMON_H
#define LWCRYPTO_AEAD_COMMON_H
#include <stddef.h>
/**
* \file aead-common.h
* \brief Definitions that are common across AEAD schemes.
*
* AEAD stands for "Authenticated Encryption with Associated Data".
* It is a standard API pattern for securely encrypting and
* authenticating packets of data.
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Encrypts and authenticates a packet with an AEAD scheme.
*
* \param c Buffer to receive the output.
* \param clen On exit, set to the length of the output which includes
* the ciphertext and the authentication tag.
* \param m Buffer that contains the plaintext message to encrypt.
* \param mlen Length of the plaintext message in bytes.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param nsec Secret nonce - normally not used by AEAD schemes.
* \param npub Points to the public nonce for the packet.
* \param k Points to the key to use to encrypt the packet.
*
* \return 0 on success, or a negative value if there was an error in
* the parameters.
*/
typedef int (*aead_cipher_encrypt_t)
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Decrypts and authenticates a packet with an AEAD scheme.
*
* \param m Buffer to receive the plaintext message on output.
* \param mlen Receives the length of the plaintext message on output.
* \param nsec Secret nonce - normally not used by AEAD schemes.
* \param c Buffer that contains the ciphertext and authentication
* tag to decrypt.
* \param clen Length of the input data in bytes, which includes the
* ciphertext and the authentication tag.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param npub Points to the public nonce for the packet.
* \param k Points to the key to use to decrypt the packet.
*
* \return 0 on success, -1 if the authentication tag was incorrect,
* or some other negative number if there was an error in the parameters.
*/
typedef int (*aead_cipher_decrypt_t)
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Hashes a block of input data.
*
* \param out Buffer to receive the hash output.
* \param in Points to the input data to be hashed.
* \param inlen Length of the input data in bytes.
*
* \return Returns zero on success or -1 if there was an error in the
* parameters.
*/
typedef int (*aead_hash_t)
(unsigned char *out, const unsigned char *in, unsigned long long inlen);
/**
* \brief Initializes the state for a hashing operation.
*
* \param state Hash state to be initialized.
*/
typedef void (*aead_hash_init_t)(void *state);
/**
* \brief Updates a hash state with more input data.
*
* \param state Hash state to be updated.
* \param in Points to the input data to be incorporated into the state.
* \param inlen Length of the input data to be incorporated into the state.
*/
typedef void (*aead_hash_update_t)
(void *state, const unsigned char *in, unsigned long long inlen);
/**
* \brief Returns the final hash value from a hashing operation.
*
* \param Hash state to be finalized.
* \param out Points to the output buffer to receive the hash value.
*/
typedef void (*aead_hash_finalize_t)(void *state, unsigned char *out);
/**
* \brief Aborbs more input data into an XOF state.
*
* \param state XOF state to be updated.
* \param in Points to the input data to be absorbed into the state.
* \param inlen Length of the input data to be absorbed into the state.
*
* \sa ascon_xof_init(), ascon_xof_squeeze()
*/
typedef void (*aead_xof_absorb_t)
(void *state, const unsigned char *in, unsigned long long inlen);
/**
* \brief Squeezes output data from an XOF state.
*
* \param state XOF state to squeeze the output data from.
* \param out Points to the output buffer to receive the squeezed data.
* \param outlen Number of bytes of data to squeeze out of the state.
*/
typedef void (*aead_xof_squeeze_t)
(void *state, unsigned char *out, unsigned long long outlen);
/**
* \brief No special AEAD features.
*/
#define AEAD_FLAG_NONE 0x0000
/**
* \brief The natural byte order of the AEAD cipher is little-endian.
*
* If this flag is not present, then the natural byte order of the
* AEAD cipher should be assumed to be big-endian.
*
* The natural byte order may be useful when formatting packet sequence
* numbers as nonces. The application needs to know whether the sequence
* number should be packed into the leading or trailing bytes of the nonce.
*/
#define AEAD_FLAG_LITTLE_ENDIAN 0x0001
/**
* \brief Meta-information about an AEAD cipher.
*/
typedef struct
{
const char *name; /**< Name of the cipher */
unsigned key_len; /**< Length of the key in bytes */
unsigned nonce_len; /**< Length of the nonce in bytes */
unsigned tag_len; /**< Length of the tag in bytes */
unsigned flags; /**< Flags for extra features */
aead_cipher_encrypt_t encrypt; /**< AEAD encryption function */
aead_cipher_decrypt_t decrypt; /**< AEAD decryption function */
} aead_cipher_t;
/**
* \brief Meta-information about a hash algorithm that is related to an AEAD.
*
* Regular hash algorithms should provide the "hash", "init", "update",
* and "finalize" functions. Extensible Output Functions (XOF's) should
* proivde the "hash", "init", "absorb", and "squeeze" functions.
*/
typedef struct
{
const char *name; /**< Name of the hash algorithm */
size_t state_size; /**< Size of the incremental state structure */
unsigned hash_len; /**< Length of the hash in bytes */
unsigned flags; /**< Flags for extra features */
aead_hash_t hash; /**< All in one hashing function */
aead_hash_init_t init; /**< Incremental hash/XOF init function */
aead_hash_update_t update; /**< Incremental hash update function */
aead_hash_finalize_t finalize; /**< Incremental hash finalize function */
aead_xof_absorb_t absorb; /**< Incremental XOF absorb function */
aead_xof_squeeze_t squeeze; /**< Incremental XOF squeeze function */
} aead_hash_algorithm_t;
/**
* \brief Check an authentication tag in constant time.
*
* \param plaintext Points to the plaintext data.
* \param plaintext_len Length of the plaintext in bytes.
* \param tag1 First tag to compare.
* \param tag2 Second tag to compare.
* \param tag_len Length of the tags in bytes.
*
* \return Returns -1 if the tag check failed or 0 if the check succeeded.
*
* If the tag check fails, then the \a plaintext will also be zeroed to
* prevent it from being used accidentally by the application when the
* ciphertext was invalid.
*/
int aead_check_tag
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned tag_len);
/**
* \brief Check an authentication tag in constant time with a previous check.
*
* \param plaintext Points to the plaintext data.
* \param plaintext_len Length of the plaintext in bytes.
* \param tag1 First tag to compare.
* \param tag2 Second tag to compare.
* \param tag_len Length of the tags in bytes.
* \param precheck Set to -1 if previous check succeeded or 0 if it failed.
*
* \return Returns -1 if the tag check failed or 0 if the check succeeded.
*
* If the tag check fails, then the \a plaintext will also be zeroed to
* prevent it from being used accidentally by the application when the
* ciphertext was invalid.
*
* This version can be used to incorporate other information about the
* correctness of the plaintext into the final result.
*/
int aead_check_tag_precheck
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned tag_len, int precheck);
#ifdef __cplusplus
}
#endif
#endif
ascon/Implementations/crypto_aead/ascon80pqv12/rhys/api.h 0 → 100644
#define CRYPTO_KEYBYTES 20
#define CRYPTO_NSECBYTES 0
#define CRYPTO_NPUBBYTES 16
#define CRYPTO_ABYTES 16
#define CRYPTO_NOOVERLAP 1
ascon/Implementations/crypto_aead/ascon80pqv12/rhys/encrypt.c 0 → 100644
#include "ascon128.h"
int crypto_aead_encrypt
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k)
{
return ascon80pq_aead_encrypt
(c, clen, m, mlen, ad, adlen, nsec, npub, k);
}
int crypto_aead_decrypt
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k)
{
return ascon80pq_aead_decrypt
(m, mlen, nsec, c, clen, ad, adlen, npub, k);
}
ascon/Implementations/crypto_aead/ascon80pqv12/rhys/internal-ascon.c 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "internal-ascon.h"
void ascon_permute(ascon_state_t *state, uint8_t first_round)
{
uint64_t t0, t1, t2, t3, t4;
#if defined(LW_UTIL_LITTLE_ENDIAN)
uint64_t x0 = be_load_word64(state->B);
uint64_t x1 = be_load_word64(state->B + 8);
uint64_t x2 = be_load_word64(state->B + 16);
uint64_t x3 = be_load_word64(state->B + 24);
uint64_t x4 = be_load_word64(state->B + 32);
#else
uint64_t x0 = state->S[0];
uint64_t x1 = state->S[1];
uint64_t x2 = state->S[2];
uint64_t x3 = state->S[3];
uint64_t x4 = state->S[4];
#endif
while (first_round < 12) {
/* Add the round constant to the state */
x2 ^= ((0x0F - first_round) << 4) | first_round;
/* Substitution layer - apply the s-box using bit-slicing
* according to the algorithm recommended in the specification */
x0 ^= x4; x4 ^= x3; x2 ^= x1;
t0 = ~x0; t1 = ~x1; t2 = ~x2; t3 = ~x3; t4 = ~x4;
t0 &= x1; t1 &= x2; t2 &= x3; t3 &= x4; t4 &= x0;
x0 ^= t1; x1 ^= t2; x2 ^= t3; x3 ^= t4; x4 ^= t0;
x1 ^= x0; x0 ^= x4; x3 ^= x2; x2 = ~x2;
/* Linear diffusion layer */
x0 ^= rightRotate19_64(x0) ^ rightRotate28_64(x0);
x1 ^= rightRotate61_64(x1) ^ rightRotate39_64(x1);
x2 ^= rightRotate1_64(x2) ^ rightRotate6_64(x2);
x3 ^= rightRotate10_64(x3) ^ rightRotate17_64(x3);
x4 ^= rightRotate7_64(x4) ^ rightRotate41_64(x4);
/* Move onto the next round */
++first_round;
}
#if defined(LW_UTIL_LITTLE_ENDIAN)
be_store_word64(state->B, x0);
be_store_word64(state->B + 8, x1);
be_store_word64(state->B + 16, x2);
be_store_word64(state->B + 24, x3);
be_store_word64(state->B + 32, x4);
#else
state->S[0] = x0;
state->S[1] = x1;
state->S[2] = x2;
state->S[3] = x3;
state->S[4] = x4;
#endif
}
ascon/Implementations/crypto_aead/ascon80pqv12/rhys/internal-ascon.h 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LW_INTERNAL_ASCON_H
#define LW_INTERNAL_ASCON_H
#include "internal-util.h"
/**
* \file internal-ascon.h
* \brief Internal implementation of the ASCON permutation.
*
* References: http://competitions.cr.yp.to/round3/asconv12.pdf,
* http://ascon.iaik.tugraz.at/
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Structure of the internal state of the ASCON permutation.
*/
typedef union
{
uint64_t S[5]; /**< Words of the state */
uint8_t B[40]; /**< Bytes of the state */
} ascon_state_t;
/**
* \brief Permutes the ASCON state.
*
* \param state The ASCON state to be permuted.
* \param first_round The first round (of 12) to be performed; 0, 4, or 6.
*
* The input and output \a state will be in big-endian byte order.
*/
void ascon_permute(ascon_state_t *state, uint8_t first_round);
#ifdef __cplusplus
}
#endif
#endif
comet/Implementations/crypto_aead/comet128chamv1/rhys/aead-common.c 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "aead-common.h"
int aead_check_tag
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = (accum - 1) >> 8;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
int aead_check_tag_precheck
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size, int precheck)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = ((accum - 1) >> 8) & precheck;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
comet/Implementations/crypto_aead/comet128chamv1/rhys/aead-common.h 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LWCRYPTO_AEAD_COMMON_H
#define LWCRYPTO_AEAD_COMMON_H
#include <stddef.h>
/**
* \file aead-common.h
* \brief Definitions that are common across AEAD schemes.
*
* AEAD stands for "Authenticated Encryption with Associated Data".
* It is a standard API pattern for securely encrypting and
* authenticating packets of data.
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Encrypts and authenticates a packet with an AEAD scheme.
*
* \param c Buffer to receive the output.
* \param clen On exit, set to the length of the output which includes
* the ciphertext and the authentication tag.
* \param m Buffer that contains the plaintext message to encrypt.
* \param mlen Length of the plaintext message in bytes.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param nsec Secret nonce - normally not used by AEAD schemes.
* \param npub Points to the public nonce for the packet.
* \param k Points to the key to use to encrypt the packet.
*
* \return 0 on success, or a negative value if there was an error in
* the parameters.
*/
typedef int (*aead_cipher_encrypt_t)
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Decrypts and authenticates a packet with an AEAD scheme.
*
* \param m Buffer to receive the plaintext message on output.
* \param mlen Receives the length of the plaintext message on output.
* \param nsec Secret nonce - normally not used by AEAD schemes.
* \param c Buffer that contains the ciphertext and authentication
* tag to decrypt.
* \param clen Length of the input data in bytes, which includes the
* ciphertext and the authentication tag.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param npub Points to the public nonce for the packet.
* \param k Points to the key to use to decrypt the packet.
*
* \return 0 on success, -1 if the authentication tag was incorrect,
* or some other negative number if there was an error in the parameters.
*/
typedef int (*aead_cipher_decrypt_t)
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Hashes a block of input data.
*
* \param out Buffer to receive the hash output.
* \param in Points to the input data to be hashed.
* \param inlen Length of the input data in bytes.
*
* \return Returns zero on success or -1 if there was an error in the
* parameters.
*/
typedef int (*aead_hash_t)
(unsigned char *out, const unsigned char *in, unsigned long long inlen);
/**
* \brief Initializes the state for a hashing operation.
*
* \param state Hash state to be initialized.
*/
typedef void (*aead_hash_init_t)(void *state);
/**
* \brief Updates a hash state with more input data.
*
* \param state Hash state to be updated.
* \param in Points to the input data to be incorporated into the state.
* \param inlen Length of the input data to be incorporated into the state.
*/
typedef void (*aead_hash_update_t)
(void *state, const unsigned char *in, unsigned long long inlen);
/**
* \brief Returns the final hash value from a hashing operation.
*
* \param Hash state to be finalized.
* \param out Points to the output buffer to receive the hash value.
*/
typedef void (*aead_hash_finalize_t)(void *state, unsigned char *out);
/**
* \brief Aborbs more input data into an XOF state.
*
* \param state XOF state to be updated.
* \param in Points to the input data to be absorbed into the state.
* \param inlen Length of the input data to be absorbed into the state.
*
* \sa ascon_xof_init(), ascon_xof_squeeze()
*/
typedef void (*aead_xof_absorb_t)
(void *state, const unsigned char *in, unsigned long long inlen);
/**
* \brief Squeezes output data from an XOF state.
*
* \param state XOF state to squeeze the output data from.
* \param out Points to the output buffer to receive the squeezed data.
* \param outlen Number of bytes of data to squeeze out of the state.
*/
typedef void (*aead_xof_squeeze_t)
(void *state, unsigned char *out, unsigned long long outlen);
/**
* \brief No special AEAD features.
*/
#define AEAD_FLAG_NONE 0x0000
/**
* \brief The natural byte order of the AEAD cipher is little-endian.
*
* If this flag is not present, then the natural byte order of the
* AEAD cipher should be assumed to be big-endian.
*
* The natural byte order may be useful when formatting packet sequence
* numbers as nonces. The application needs to know whether the sequence
* number should be packed into the leading or trailing bytes of the nonce.
*/
#define AEAD_FLAG_LITTLE_ENDIAN 0x0001
/**
* \brief Meta-information about an AEAD cipher.
*/
typedef struct
{
const char *name; /**< Name of the cipher */
unsigned key_len; /**< Length of the key in bytes */
unsigned nonce_len; /**< Length of the nonce in bytes */
unsigned tag_len; /**< Length of the tag in bytes */
unsigned flags; /**< Flags for extra features */
aead_cipher_encrypt_t encrypt; /**< AEAD encryption function */
aead_cipher_decrypt_t decrypt; /**< AEAD decryption function */
} aead_cipher_t;
/**
* \brief Meta-information about a hash algorithm that is related to an AEAD.
*
* Regular hash algorithms should provide the "hash", "init", "update",
* and "finalize" functions. Extensible Output Functions (XOF's) should
* proivde the "hash", "init", "absorb", and "squeeze" functions.
*/
typedef struct
{
const char *name; /**< Name of the hash algorithm */
size_t state_size; /**< Size of the incremental state structure */
unsigned hash_len; /**< Length of the hash in bytes */
unsigned flags; /**< Flags for extra features */
aead_hash_t hash; /**< All in one hashing function */
aead_hash_init_t init; /**< Incremental hash/XOF init function */
aead_hash_update_t update; /**< Incremental hash update function */
aead_hash_finalize_t finalize; /**< Incremental hash finalize function */
aead_xof_absorb_t absorb; /**< Incremental XOF absorb function */
aead_xof_squeeze_t squeeze; /**< Incremental XOF squeeze function */
} aead_hash_algorithm_t;
/**
* \brief Check an authentication tag in constant time.
*
* \param plaintext Points to the plaintext data.
* \param plaintext_len Length of the plaintext in bytes.
* \param tag1 First tag to compare.
* \param tag2 Second tag to compare.
* \param tag_len Length of the tags in bytes.
*
* \return Returns -1 if the tag check failed or 0 if the check succeeded.
*
* If the tag check fails, then the \a plaintext will also be zeroed to
* prevent it from being used accidentally by the application when the
* ciphertext was invalid.
*/
int aead_check_tag
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned tag_len);
/**
* \brief Check an authentication tag in constant time with a previous check.
*
* \param plaintext Points to the plaintext data.
* \param plaintext_len Length of the plaintext in bytes.
* \param tag1 First tag to compare.
* \param tag2 Second tag to compare.
* \param tag_len Length of the tags in bytes.
* \param precheck Set to -1 if previous check succeeded or 0 if it failed.
*
* \return Returns -1 if the tag check failed or 0 if the check succeeded.
*
* If the tag check fails, then the \a plaintext will also be zeroed to
* prevent it from being used accidentally by the application when the
* ciphertext was invalid.
*
* This version can be used to incorporate other information about the
* correctness of the plaintext into the final result.
*/
int aead_check_tag_precheck
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned tag_len, int precheck);
#ifdef __cplusplus
}
#endif
#endif
comet/Implementations/crypto_aead/comet128chamv1/rhys/api.h 0 → 100644
#define CRYPTO_KEYBYTES 16
#define CRYPTO_NSECBYTES 0
#define CRYPTO_NPUBBYTES 16
#define CRYPTO_ABYTES 16
#define CRYPTO_NOOVERLAP 1
comet/Implementations/crypto_aead/comet128chamv1/rhys/encrypt.c 0 → 100644
#include "comet.h"
int crypto_aead_encrypt
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k)
{
return comet_128_cham_aead_encrypt
(c, clen, m, mlen, ad, adlen, nsec, npub, k);
}
int crypto_aead_decrypt
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k)
{
return comet_128_cham_aead_decrypt
(m, mlen, nsec, c, clen, ad, adlen, npub, k);
}
comet/Implementations/crypto_aead/comet128chamv1/rhys/internal-cham.c 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "internal-cham.h"
#include "internal-util.h"
void cham128_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input)
{
uint32_t x0, x1, x2, x3;
uint32_t k[8];
uint8_t round;
/* Unpack the key and generate the key schedule */
k[0] = le_load_word32(key);
k[1] = le_load_word32(key + 4);
k[2] = le_load_word32(key + 8);
k[3] = le_load_word32(key + 12);
k[4] = k[1] ^ leftRotate1(k[1]) ^ leftRotate11(k[1]);
k[5] = k[0] ^ leftRotate1(k[0]) ^ leftRotate11(k[0]);
k[6] = k[3] ^ leftRotate1(k[3]) ^ leftRotate11(k[3]);
k[7] = k[2] ^ leftRotate1(k[2]) ^ leftRotate11(k[2]);
k[0] ^= leftRotate1(k[0]) ^ leftRotate8(k[0]);
k[1] ^= leftRotate1(k[1]) ^ leftRotate8(k[1]);
k[2] ^= leftRotate1(k[2]) ^ leftRotate8(k[2]);
k[3] ^= leftRotate1(k[3]) ^ leftRotate8(k[3]);
/* Unpack the input block */
x0 = le_load_word32(input);
x1 = le_load_word32(input + 4);
x2 = le_load_word32(input + 8);
x3 = le_load_word32(input + 12);
/* Perform the 80 rounds eight at a time */
for (round = 0; round < 80; round += 8) {
x0 = leftRotate8((x0 ^ round) + (leftRotate1(x1) ^ k[0]));
x1 = leftRotate1((x1 ^ (round + 1)) + (leftRotate8(x2) ^ k[1]));
x2 = leftRotate8((x2 ^ (round + 2)) + (leftRotate1(x3) ^ k[2]));
x3 = leftRotate1((x3 ^ (round + 3)) + (leftRotate8(x0) ^ k[3]));
x0 = leftRotate8((x0 ^ (round + 4)) + (leftRotate1(x1) ^ k[4]));
x1 = leftRotate1((x1 ^ (round + 5)) + (leftRotate8(x2) ^ k[5]));
x2 = leftRotate8((x2 ^ (round + 6)) + (leftRotate1(x3) ^ k[6]));
x3 = leftRotate1((x3 ^ (round + 7)) + (leftRotate8(x0) ^ k[7]));
}
/* Pack the state into the output block */
le_store_word32(output, x0);
le_store_word32(output + 4, x1);
le_store_word32(output + 8, x2);
le_store_word32(output + 12, x3);
}
void cham64_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input)
{
uint16_t x0, x1, x2, x3;
uint16_t k[16];
uint8_t round;
/* Unpack the key and generate the key schedule */
k[0] = le_load_word16(key);
k[1] = le_load_word16(key + 2);
k[2] = le_load_word16(key + 4);
k[3] = le_load_word16(key + 6);
k[4] = le_load_word16(key + 8);
k[5] = le_load_word16(key + 10);
k[6] = le_load_word16(key + 12);
k[7] = le_load_word16(key + 14);
k[8] = k[1] ^ leftRotate1_16(k[1]) ^ leftRotate11_16(k[1]);
k[9] = k[0] ^ leftRotate1_16(k[0]) ^ leftRotate11_16(k[0]);
k[10] = k[3] ^ leftRotate1_16(k[3]) ^ leftRotate11_16(k[3]);
k[11] = k[2] ^ leftRotate1_16(k[2]) ^ leftRotate11_16(k[2]);
k[12] = k[5] ^ leftRotate1_16(k[5]) ^ leftRotate11_16(k[5]);
k[13] = k[4] ^ leftRotate1_16(k[4]) ^ leftRotate11_16(k[4]);
k[14] = k[7] ^ leftRotate1_16(k[7]) ^ leftRotate11_16(k[7]);
k[15] = k[6] ^ leftRotate1_16(k[6]) ^ leftRotate11_16(k[6]);
k[0] ^= leftRotate1_16(k[0]) ^ leftRotate8_16(k[0]);
k[1] ^= leftRotate1_16(k[1]) ^ leftRotate8_16(k[1]);
k[2] ^= leftRotate1_16(k[2]) ^ leftRotate8_16(k[2]);
k[3] ^= leftRotate1_16(k[3]) ^ leftRotate8_16(k[3]);
k[4] ^= leftRotate1_16(k[4]) ^ leftRotate8_16(k[4]);
k[5] ^= leftRotate1_16(k[5]) ^ leftRotate8_16(k[5]);
k[6] ^= leftRotate1_16(k[6]) ^ leftRotate8_16(k[6]);
k[7] ^= leftRotate1_16(k[7]) ^ leftRotate8_16(k[7]);
/* Unpack the input block */
x0 = le_load_word16(input);
x1 = le_load_word16(input + 2);
x2 = le_load_word16(input + 4);
x3 = le_load_word16(input + 6);
/* Perform the 80 rounds four at a time */
for (round = 0; round < 80; round += 4) {
x0 = leftRotate8_16
((x0 ^ round) +
(leftRotate1_16(x1) ^ k[round % 16]));
x1 = leftRotate1_16
((x1 ^ (round + 1)) +
(leftRotate8_16(x2) ^ k[(round + 1) % 16]));
x2 = leftRotate8_16
((x2 ^ (round + 2)) +
(leftRotate1_16(x3) ^ k[(round + 2) % 16]));
x3 = leftRotate1_16
((x3 ^ (round + 3)) +
(leftRotate8_16(x0) ^ k[(round + 3) % 16]));
}
/* Pack the state into the output block */
le_store_word16(output, x0);
le_store_word16(output + 2, x1);
le_store_word16(output + 4, x2);
le_store_word16(output + 6, x3);
}
comet/Implementations/crypto_aead/comet128chamv1/rhys/internal-cham.h 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LW_INTERNAL_CHAM_H
#define LW_INTERNAL_CHAM_H
/**
* \file internal-cham.h
* \brief CHAM block cipher.
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Encrypts a 128-bit block with CHAM-128-128.
*
* \param key Points to the 16 bytes of the key.
* \param output Output buffer which must be at least 16 bytes in length.
* \param input Input buffer which must be at least 16 bytes in length.
*
* The \a input and \a output buffers can be the same buffer for
* in-place encryption.
*/
void cham128_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input);
/**
* \brief Encrypts a 64-bit block with CHAM-64-128.
*
* \param key Points to the 16 bytes of the key.
* \param output Output buffer which must be at least 8 bytes in length.
* \param input Input buffer which must be at least 8 bytes in length.
*
* The \a input and \a output buffers can be the same buffer for
* in-place encryption.
*/
void cham64_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input);
#ifdef __cplusplus
}
#endif
#endif
comet/Implementations/crypto_aead/comet64chamv1/rhys/aead-common.c 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "aead-common.h"
int aead_check_tag
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = (accum - 1) >> 8;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
int aead_check_tag_precheck
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size, int precheck)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = ((accum - 1) >> 8) & precheck;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
comet/Implementations/crypto_aead/comet64chamv1/rhys/aead-common.h 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LWCRYPTO_AEAD_COMMON_H
#define LWCRYPTO_AEAD_COMMON_H
#include <stddef.h>
/**
* \file aead-common.h
* \brief Definitions that are common across AEAD schemes.
*
* AEAD stands for "Authenticated Encryption with Associated Data".
* It is a standard API pattern for securely encrypting and
* authenticating packets of data.
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Encrypts and authenticates a packet with an AEAD scheme.
*
* \param c Buffer to receive the output.
* \param clen On exit, set to the length of the output which includes
* the ciphertext and the authentication tag.
* \param m Buffer that contains the plaintext message to encrypt.
* \param mlen Length of the plaintext message in bytes.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param nsec Secret nonce - normally not used by AEAD schemes.
* \param npub Points to the public nonce for the packet.
* \param k Points to the key to use to encrypt the packet.
*
* \return 0 on success, or a negative value if there was an error in
* the parameters.
*/
typedef int (*aead_cipher_encrypt_t)
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Decrypts and authenticates a packet with an AEAD scheme.
*
* \param m Buffer to receive the plaintext message on output.
* \param mlen Receives the length of the plaintext message on output.
* \param nsec Secret nonce - normally not used by AEAD schemes.
* \param c Buffer that contains the ciphertext and authentication
* tag to decrypt.
* \param clen Length of the input data in bytes, which includes the
* ciphertext and the authentication tag.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param npub Points to the public nonce for the packet.
* \param k Points to the key to use to decrypt the packet.
*
* \return 0 on success, -1 if the authentication tag was incorrect,
* or some other negative number if there was an error in the parameters.
*/
typedef int (*aead_cipher_decrypt_t)
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Hashes a block of input data.
*
* \param out Buffer to receive the hash output.
* \param in Points to the input data to be hashed.
* \param inlen Length of the input data in bytes.
*
* \return Returns zero on success or -1 if there was an error in the
* parameters.
*/
typedef int (*aead_hash_t)
(unsigned char *out, const unsigned char *in, unsigned long long inlen);
/**
* \brief Initializes the state for a hashing operation.
*
* \param state Hash state to be initialized.
*/
typedef void (*aead_hash_init_t)(void *state);
/**
* \brief Updates a hash state with more input data.
*
* \param state Hash state to be updated.
* \param in Points to the input data to be incorporated into the state.
* \param inlen Length of the input data to be incorporated into the state.
*/
typedef void (*aead_hash_update_t)
(void *state, const unsigned char *in, unsigned long long inlen);
/**
* \brief Returns the final hash value from a hashing operation.
*
* \param Hash state to be finalized.
* \param out Points to the output buffer to receive the hash value.
*/
typedef void (*aead_hash_finalize_t)(void *state, unsigned char *out);
/**
* \brief Aborbs more input data into an XOF state.
*
* \param state XOF state to be updated.
* \param in Points to the input data to be absorbed into the state.
* \param inlen Length of the input data to be absorbed into the state.
*
* \sa ascon_xof_init(), ascon_xof_squeeze()
*/
typedef void (*aead_xof_absorb_t)
(void *state, const unsigned char *in, unsigned long long inlen);
/**
* \brief Squeezes output data from an XOF state.
*
* \param state XOF state to squeeze the output data from.
* \param out Points to the output buffer to receive the squeezed data.
* \param outlen Number of bytes of data to squeeze out of the state.
*/
typedef void (*aead_xof_squeeze_t)
(void *state, unsigned char *out, unsigned long long outlen);
/**
* \brief No special AEAD features.
*/
#define AEAD_FLAG_NONE 0x0000
/**
* \brief The natural byte order of the AEAD cipher is little-endian.
*
* If this flag is not present, then the natural byte order of the
* AEAD cipher should be assumed to be big-endian.
*
* The natural byte order may be useful when formatting packet sequence
* numbers as nonces. The application needs to know whether the sequence
* number should be packed into the leading or trailing bytes of the nonce.
*/
#define AEAD_FLAG_LITTLE_ENDIAN 0x0001
/**
* \brief Meta-information about an AEAD cipher.
*/
typedef struct
{
const char *name; /**< Name of the cipher */
unsigned key_len; /**< Length of the key in bytes */
unsigned nonce_len; /**< Length of the nonce in bytes */
unsigned tag_len; /**< Length of the tag in bytes */
unsigned flags; /**< Flags for extra features */
aead_cipher_encrypt_t encrypt; /**< AEAD encryption function */
aead_cipher_decrypt_t decrypt; /**< AEAD decryption function */
} aead_cipher_t;
/**
* \brief Meta-information about a hash algorithm that is related to an AEAD.
*
* Regular hash algorithms should provide the "hash", "init", "update",
* and "finalize" functions. Extensible Output Functions (XOF's) should
* proivde the "hash", "init", "absorb", and "squeeze" functions.
*/
typedef struct
{
const char *name; /**< Name of the hash algorithm */
size_t state_size; /**< Size of the incremental state structure */
unsigned hash_len; /**< Length of the hash in bytes */
unsigned flags; /**< Flags for extra features */
aead_hash_t hash; /**< All in one hashing function */
aead_hash_init_t init; /**< Incremental hash/XOF init function */
aead_hash_update_t update; /**< Incremental hash update function */
aead_hash_finalize_t finalize; /**< Incremental hash finalize function */
aead_xof_absorb_t absorb; /**< Incremental XOF absorb function */
aead_xof_squeeze_t squeeze; /**< Incremental XOF squeeze function */
} aead_hash_algorithm_t;
/**
* \brief Check an authentication tag in constant time.
*
* \param plaintext Points to the plaintext data.
* \param plaintext_len Length of the plaintext in bytes.
* \param tag1 First tag to compare.
* \param tag2 Second tag to compare.
* \param tag_len Length of the tags in bytes.
*
* \return Returns -1 if the tag check failed or 0 if the check succeeded.
*
* If the tag check fails, then the \a plaintext will also be zeroed to
* prevent it from being used accidentally by the application when the
* ciphertext was invalid.
*/
int aead_check_tag
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned tag_len);
/**
* \brief Check an authentication tag in constant time with a previous check.
*
* \param plaintext Points to the plaintext data.
* \param plaintext_len Length of the plaintext in bytes.
* \param tag1 First tag to compare.
* \param tag2 Second tag to compare.
* \param tag_len Length of the tags in bytes.
* \param precheck Set to -1 if previous check succeeded or 0 if it failed.
*
* \return Returns -1 if the tag check failed or 0 if the check succeeded.
*
* If the tag check fails, then the \a plaintext will also be zeroed to
* prevent it from being used accidentally by the application when the
* ciphertext was invalid.
*
* This version can be used to incorporate other information about the
* correctness of the plaintext into the final result.
*/
int aead_check_tag_precheck
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned tag_len, int precheck);
#ifdef __cplusplus
}
#endif
#endif
comet/Implementations/crypto_aead/comet64chamv1/rhys/api.h 0 → 100644
#define CRYPTO_KEYBYTES 16
#define CRYPTO_NSECBYTES 0
#define CRYPTO_NPUBBYTES 15
#define CRYPTO_ABYTES 8
#define CRYPTO_NOOVERLAP 1
comet/Implementations/crypto_aead/comet64chamv1/rhys/encrypt.c 0 → 100644
#include "comet.h"
int crypto_aead_encrypt
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k)
{
return comet_64_cham_aead_encrypt
(c, clen, m, mlen, ad, adlen, nsec, npub, k);
}
int crypto_aead_decrypt
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k)
{
return comet_64_cham_aead_decrypt
(m, mlen, nsec, c, clen, ad, adlen, npub, k);
}
comet/Implementations/crypto_aead/comet64chamv1/rhys/internal-cham.c 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "internal-cham.h"
#include "internal-util.h"
void cham128_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input)
{
uint32_t x0, x1, x2, x3;
uint32_t k[8];
uint8_t round;
/* Unpack the key and generate the key schedule */
k[0] = le_load_word32(key);
k[1] = le_load_word32(key + 4);
k[2] = le_load_word32(key + 8);
k[3] = le_load_word32(key + 12);
k[4] = k[1] ^ leftRotate1(k[1]) ^ leftRotate11(k[1]);
k[5] = k[0] ^ leftRotate1(k[0]) ^ leftRotate11(k[0]);
k[6] = k[3] ^ leftRotate1(k[3]) ^ leftRotate11(k[3]);
k[7] = k[2] ^ leftRotate1(k[2]) ^ leftRotate11(k[2]);
k[0] ^= leftRotate1(k[0]) ^ leftRotate8(k[0]);
k[1] ^= leftRotate1(k[1]) ^ leftRotate8(k[1]);
k[2] ^= leftRotate1(k[2]) ^ leftRotate8(k[2]);
k[3] ^= leftRotate1(k[3]) ^ leftRotate8(k[3]);
/* Unpack the input block */
x0 = le_load_word32(input);
x1 = le_load_word32(input + 4);
x2 = le_load_word32(input + 8);
x3 = le_load_word32(input + 12);
/* Perform the 80 rounds eight at a time */
for (round = 0; round < 80; round += 8) {
x0 = leftRotate8((x0 ^ round) + (leftRotate1(x1) ^ k[0]));
x1 = leftRotate1((x1 ^ (round + 1)) + (leftRotate8(x2) ^ k[1]));
x2 = leftRotate8((x2 ^ (round + 2)) + (leftRotate1(x3) ^ k[2]));
x3 = leftRotate1((x3 ^ (round + 3)) + (leftRotate8(x0) ^ k[3]));
x0 = leftRotate8((x0 ^ (round + 4)) + (leftRotate1(x1) ^ k[4]));
x1 = leftRotate1((x1 ^ (round + 5)) + (leftRotate8(x2) ^ k[5]));
x2 = leftRotate8((x2 ^ (round + 6)) + (leftRotate1(x3) ^ k[6]));
x3 = leftRotate1((x3 ^ (round + 7)) + (leftRotate8(x0) ^ k[7]));
}
/* Pack the state into the output block */
le_store_word32(output, x0);
le_store_word32(output + 4, x1);
le_store_word32(output + 8, x2);
le_store_word32(output + 12, x3);
}
void cham64_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input)
{
uint16_t x0, x1, x2, x3;
uint16_t k[16];
uint8_t round;
/* Unpack the key and generate the key schedule */
k[0] = le_load_word16(key);
k[1] = le_load_word16(key + 2);
k[2] = le_load_word16(key + 4);
k[3] = le_load_word16(key + 6);
k[4] = le_load_word16(key + 8);
k[5] = le_load_word16(key + 10);
k[6] = le_load_word16(key + 12);
k[7] = le_load_word16(key + 14);
k[8] = k[1] ^ leftRotate1_16(k[1]) ^ leftRotate11_16(k[1]);
k[9] = k[0] ^ leftRotate1_16(k[0]) ^ leftRotate11_16(k[0]);
k[10] = k[3] ^ leftRotate1_16(k[3]) ^ leftRotate11_16(k[3]);
k[11] = k[2] ^ leftRotate1_16(k[2]) ^ leftRotate11_16(k[2]);
k[12] = k[5] ^ leftRotate1_16(k[5]) ^ leftRotate11_16(k[5]);
k[13] = k[4] ^ leftRotate1_16(k[4]) ^ leftRotate11_16(k[4]);
k[14] = k[7] ^ leftRotate1_16(k[7]) ^ leftRotate11_16(k[7]);
k[15] = k[6] ^ leftRotate1_16(k[6]) ^ leftRotate11_16(k[6]);
k[0] ^= leftRotate1_16(k[0]) ^ leftRotate8_16(k[0]);
k[1] ^= leftRotate1_16(k[1]) ^ leftRotate8_16(k[1]);
k[2] ^= leftRotate1_16(k[2]) ^ leftRotate8_16(k[2]);
k[3] ^= leftRotate1_16(k[3]) ^ leftRotate8_16(k[3]);
k[4] ^= leftRotate1_16(k[4]) ^ leftRotate8_16(k[4]);
k[5] ^= leftRotate1_16(k[5]) ^ leftRotate8_16(k[5]);
k[6] ^= leftRotate1_16(k[6]) ^ leftRotate8_16(k[6]);
k[7] ^= leftRotate1_16(k[7]) ^ leftRotate8_16(k[7]);
/* Unpack the input block */
x0 = le_load_word16(input);
x1 = le_load_word16(input + 2);
x2 = le_load_word16(input + 4);
x3 = le_load_word16(input + 6);
/* Perform the 80 rounds four at a time */
for (round = 0; round < 80; round += 4) {
x0 = leftRotate8_16
((x0 ^ round) +
(leftRotate1_16(x1) ^ k[round % 16]));
x1 = leftRotate1_16
((x1 ^ (round + 1)) +
(leftRotate8_16(x2) ^ k[(round + 1) % 16]));
x2 = leftRotate8_16
((x2 ^ (round + 2)) +
(leftRotate1_16(x3) ^ k[(round + 2) % 16]));
x3 = leftRotate1_16
((x3 ^ (round + 3)) +
(leftRotate8_16(x0) ^ k[(round + 3) % 16]));
}
/* Pack the state into the output block */
le_store_word16(output, x0);
le_store_word16(output + 2, x1);
le_store_word16(output + 4, x2);
le_store_word16(output + 6, x3);
}
comet/Implementations/crypto_aead/comet64chamv1/rhys/internal-cham.h 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LW_INTERNAL_CHAM_H
#define LW_INTERNAL_CHAM_H
/**
* \file internal-cham.h
* \brief CHAM block cipher.
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Encrypts a 128-bit block with CHAM-128-128.
*
* \param key Points to the 16 bytes of the key.
* \param output Output buffer which must be at least 16 bytes in length.
* \param input Input buffer which must be at least 16 bytes in length.
*
* The \a input and \a output buffers can be the same buffer for
* in-place encryption.
*/
void cham128_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input);
/**
* \brief Encrypts a 64-bit block with CHAM-64-128.
*
* \param key Points to the 16 bytes of the key.
* \param output Output buffer which must be at least 8 bytes in length.
* \param input Input buffer which must be at least 8 bytes in length.
*
* The \a input and \a output buffers can be the same buffer for
* in-place encryption.
*/
void cham64_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input);
#ifdef __cplusplus
}
#endif
#endif
comet/Implementations/crypto_aead/comet64speckv1/rhys/aead-common.c 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "aead-common.h"
int aead_check_tag
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = (accum - 1) >> 8;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
int aead_check_tag_precheck
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size, int precheck)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = ((accum - 1) >> 8) & precheck;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
comet/Implementations/crypto_aead/comet64speckv1/rhys/aead-common.h 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LWCRYPTO_AEAD_COMMON_H
#define LWCRYPTO_AEAD_COMMON_H
#include <stddef.h>
/**
* \file aead-common.h
* \brief Definitions that are common across AEAD schemes.
*
* AEAD stands for "Authenticated Encryption with Associated Data".
* It is a standard API pattern for securely encrypting and
* authenticating packets of data.
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Encrypts and authenticates a packet with an AEAD scheme.
*
* \param c Buffer to receive the output.
* \param clen On exit, set to the length of the output which includes
* the ciphertext and the authentication tag.
* \param m Buffer that contains the plaintext message to encrypt.
* \param mlen Length of the plaintext message in bytes.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param nsec Secret nonce - normally not used by AEAD schemes.
* \param npub Points to the public nonce for the packet.
* \param k Points to the key to use to encrypt the packet.
*
* \return 0 on success, or a negative value if there was an error in
* the parameters.
*/
typedef int (*aead_cipher_encrypt_t)
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Decrypts and authenticates a packet with an AEAD scheme.
*
* \param m Buffer to receive the plaintext message on output.
* \param mlen Receives the length of the plaintext message on output.
* \param nsec Secret nonce - normally not used by AEAD schemes.
* \param c Buffer that contains the ciphertext and authentication
* tag to decrypt.
* \param clen Length of the input data in bytes, which includes the
* ciphertext and the authentication tag.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param npub Points to the public nonce for the packet.
* \param k Points to the key to use to decrypt the packet.
*
* \return 0 on success, -1 if the authentication tag was incorrect,
* or some other negative number if there was an error in the parameters.
*/
typedef int (*aead_cipher_decrypt_t)
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Hashes a block of input data.
*
* \param out Buffer to receive the hash output.
* \param in Points to the input data to be hashed.
* \param inlen Length of the input data in bytes.
*
* \return Returns zero on success or -1 if there was an error in the
* parameters.
*/
typedef int (*aead_hash_t)
(unsigned char *out, const unsigned char *in, unsigned long long inlen);
/**
* \brief Initializes the state for a hashing operation.
*
* \param state Hash state to be initialized.
*/
typedef void (*aead_hash_init_t)(void *state);
/**
* \brief Updates a hash state with more input data.
*
* \param state Hash state to be updated.
* \param in Points to the input data to be incorporated into the state.
* \param inlen Length of the input data to be incorporated into the state.
*/
typedef void (*aead_hash_update_t)
(void *state, const unsigned char *in, unsigned long long inlen);
/**
* \brief Returns the final hash value from a hashing operation.
*
* \param Hash state to be finalized.
* \param out Points to the output buffer to receive the hash value.
*/
typedef void (*aead_hash_finalize_t)(void *state, unsigned char *out);
/**
* \brief Aborbs more input data into an XOF state.
*
* \param state XOF state to be updated.
* \param in Points to the input data to be absorbed into the state.
* \param inlen Length of the input data to be absorbed into the state.
*
* \sa ascon_xof_init(), ascon_xof_squeeze()
*/
typedef void (*aead_xof_absorb_t)
(void *state, const unsigned char *in, unsigned long long inlen);
/**
* \brief Squeezes output data from an XOF state.
*
* \param state XOF state to squeeze the output data from.
* \param out Points to the output buffer to receive the squeezed data.
* \param outlen Number of bytes of data to squeeze out of the state.
*/
typedef void (*aead_xof_squeeze_t)
(void *state, unsigned char *out, unsigned long long outlen);
/**
* \brief No special AEAD features.
*/
#define AEAD_FLAG_NONE 0x0000
/**
* \brief The natural byte order of the AEAD cipher is little-endian.
*
* If this flag is not present, then the natural byte order of the
* AEAD cipher should be assumed to be big-endian.
*
* The natural byte order may be useful when formatting packet sequence
* numbers as nonces. The application needs to know whether the sequence
* number should be packed into the leading or trailing bytes of the nonce.
*/
#define AEAD_FLAG_LITTLE_ENDIAN 0x0001
/**
* \brief Meta-information about an AEAD cipher.
*/
typedef struct
{
const char *name; /**< Name of the cipher */
unsigned key_len; /**< Length of the key in bytes */
unsigned nonce_len; /**< Length of the nonce in bytes */
unsigned tag_len; /**< Length of the tag in bytes */
unsigned flags; /**< Flags for extra features */
aead_cipher_encrypt_t encrypt; /**< AEAD encryption function */
aead_cipher_decrypt_t decrypt; /**< AEAD decryption function */
} aead_cipher_t;
/**
* \brief Meta-information about a hash algorithm that is related to an AEAD.
*
* Regular hash algorithms should provide the "hash", "init", "update",
* and "finalize" functions. Extensible Output Functions (XOF's) should
* proivde the "hash", "init", "absorb", and "squeeze" functions.
*/
typedef struct
{
const char *name; /**< Name of the hash algorithm */
size_t state_size; /**< Size of the incremental state structure */
unsigned hash_len; /**< Length of the hash in bytes */
unsigned flags; /**< Flags for extra features */
aead_hash_t hash; /**< All in one hashing function */
aead_hash_init_t init; /**< Incremental hash/XOF init function */
aead_hash_update_t update; /**< Incremental hash update function */
aead_hash_finalize_t finalize; /**< Incremental hash finalize function */
aead_xof_absorb_t absorb; /**< Incremental XOF absorb function */
aead_xof_squeeze_t squeeze; /**< Incremental XOF squeeze function */
} aead_hash_algorithm_t;
/**
* \brief Check an authentication tag in constant time.
*
* \param plaintext Points to the plaintext data.
* \param plaintext_len Length of the plaintext in bytes.
* \param tag1 First tag to compare.
* \param tag2 Second tag to compare.
* \param tag_len Length of the tags in bytes.
*
* \return Returns -1 if the tag check failed or 0 if the check succeeded.
*
* If the tag check fails, then the \a plaintext will also be zeroed to
* prevent it from being used accidentally by the application when the
* ciphertext was invalid.
*/
int aead_check_tag
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned tag_len);
/**
* \brief Check an authentication tag in constant time with a previous check.
*
* \param plaintext Points to the plaintext data.
* \param plaintext_len Length of the plaintext in bytes.
* \param tag1 First tag to compare.
* \param tag2 Second tag to compare.
* \param tag_len Length of the tags in bytes.
* \param precheck Set to -1 if previous check succeeded or 0 if it failed.
*
* \return Returns -1 if the tag check failed or 0 if the check succeeded.
*
* If the tag check fails, then the \a plaintext will also be zeroed to
* prevent it from being used accidentally by the application when the
* ciphertext was invalid.
*
* This version can be used to incorporate other information about the
* correctness of the plaintext into the final result.
*/
int aead_check_tag_precheck
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned tag_len, int precheck);
#ifdef __cplusplus
}
#endif
#endif
comet/Implementations/crypto_aead/comet64speckv1/rhys/api.h 0 → 100644
#define CRYPTO_KEYBYTES 16
#define CRYPTO_NSECBYTES 0
#define CRYPTO_NPUBBYTES 15
#define CRYPTO_ABYTES 8
#define CRYPTO_NOOVERLAP 1
comet/Implementations/crypto_aead/comet64speckv1/rhys/encrypt.c 0 → 100644
#include "comet.h"
int crypto_aead_encrypt
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k)
{
return comet_64_speck_aead_encrypt
(c, clen, m, mlen, ad, adlen, nsec, npub, k);
}
int crypto_aead_decrypt
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k)
{
return comet_64_speck_aead_decrypt
(m, mlen, nsec, c, clen, ad, adlen, npub, k);
}
comet/Implementations/crypto_aead/comet64speckv1/rhys/internal-cham.c 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "internal-cham.h"
#include "internal-util.h"
void cham128_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input)
{
uint32_t x0, x1, x2, x3;
uint32_t k[8];
uint8_t round;
/* Unpack the key and generate the key schedule */
k[0] = le_load_word32(key);
k[1] = le_load_word32(key + 4);
k[2] = le_load_word32(key + 8);
k[3] = le_load_word32(key + 12);
k[4] = k[1] ^ leftRotate1(k[1]) ^ leftRotate11(k[1]);
k[5] = k[0] ^ leftRotate1(k[0]) ^ leftRotate11(k[0]);
k[6] = k[3] ^ leftRotate1(k[3]) ^ leftRotate11(k[3]);
k[7] = k[2] ^ leftRotate1(k[2]) ^ leftRotate11(k[2]);
k[0] ^= leftRotate1(k[0]) ^ leftRotate8(k[0]);
k[1] ^= leftRotate1(k[1]) ^ leftRotate8(k[1]);
k[2] ^= leftRotate1(k[2]) ^ leftRotate8(k[2]);
k[3] ^= leftRotate1(k[3]) ^ leftRotate8(k[3]);
/* Unpack the input block */
x0 = le_load_word32(input);
x1 = le_load_word32(input + 4);
x2 = le_load_word32(input + 8);
x3 = le_load_word32(input + 12);
/* Perform the 80 rounds eight at a time */
for (round = 0; round < 80; round += 8) {
x0 = leftRotate8((x0 ^ round) + (leftRotate1(x1) ^ k[0]));
x1 = leftRotate1((x1 ^ (round + 1)) + (leftRotate8(x2) ^ k[1]));
x2 = leftRotate8((x2 ^ (round + 2)) + (leftRotate1(x3) ^ k[2]));
x3 = leftRotate1((x3 ^ (round + 3)) + (leftRotate8(x0) ^ k[3]));
x0 = leftRotate8((x0 ^ (round + 4)) + (leftRotate1(x1) ^ k[4]));
x1 = leftRotate1((x1 ^ (round + 5)) + (leftRotate8(x2) ^ k[5]));
x2 = leftRotate8((x2 ^ (round + 6)) + (leftRotate1(x3) ^ k[6]));
x3 = leftRotate1((x3 ^ (round + 7)) + (leftRotate8(x0) ^ k[7]));
}
/* Pack the state into the output block */
le_store_word32(output, x0);
le_store_word32(output + 4, x1);
le_store_word32(output + 8, x2);
le_store_word32(output + 12, x3);
}
void cham64_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input)
{
uint16_t x0, x1, x2, x3;
uint16_t k[16];
uint8_t round;
/* Unpack the key and generate the key schedule */
k[0] = le_load_word16(key);
k[1] = le_load_word16(key + 2);
k[2] = le_load_word16(key + 4);
k[3] = le_load_word16(key + 6);
k[4] = le_load_word16(key + 8);
k[5] = le_load_word16(key + 10);
k[6] = le_load_word16(key + 12);
k[7] = le_load_word16(key + 14);
k[8] = k[1] ^ leftRotate1_16(k[1]) ^ leftRotate11_16(k[1]);
k[9] = k[0] ^ leftRotate1_16(k[0]) ^ leftRotate11_16(k[0]);
k[10] = k[3] ^ leftRotate1_16(k[3]) ^ leftRotate11_16(k[3]);
k[11] = k[2] ^ leftRotate1_16(k[2]) ^ leftRotate11_16(k[2]);
k[12] = k[5] ^ leftRotate1_16(k[5]) ^ leftRotate11_16(k[5]);
k[13] = k[4] ^ leftRotate1_16(k[4]) ^ leftRotate11_16(k[4]);
k[14] = k[7] ^ leftRotate1_16(k[7]) ^ leftRotate11_16(k[7]);
k[15] = k[6] ^ leftRotate1_16(k[6]) ^ leftRotate11_16(k[6]);
k[0] ^= leftRotate1_16(k[0]) ^ leftRotate8_16(k[0]);
k[1] ^= leftRotate1_16(k[1]) ^ leftRotate8_16(k[1]);
k[2] ^= leftRotate1_16(k[2]) ^ leftRotate8_16(k[2]);
k[3] ^= leftRotate1_16(k[3]) ^ leftRotate8_16(k[3]);
k[4] ^= leftRotate1_16(k[4]) ^ leftRotate8_16(k[4]);
k[5] ^= leftRotate1_16(k[5]) ^ leftRotate8_16(k[5]);
k[6] ^= leftRotate1_16(k[6]) ^ leftRotate8_16(k[6]);
k[7] ^= leftRotate1_16(k[7]) ^ leftRotate8_16(k[7]);
/* Unpack the input block */
x0 = le_load_word16(input);
x1 = le_load_word16(input + 2);
x2 = le_load_word16(input + 4);
x3 = le_load_word16(input + 6);
/* Perform the 80 rounds four at a time */
for (round = 0; round < 80; round += 4) {
x0 = leftRotate8_16
((x0 ^ round) +
(leftRotate1_16(x1) ^ k[round % 16]));
x1 = leftRotate1_16
((x1 ^ (round + 1)) +
(leftRotate8_16(x2) ^ k[(round + 1) % 16]));
x2 = leftRotate8_16
((x2 ^ (round + 2)) +
(leftRotate1_16(x3) ^ k[(round + 2) % 16]));
x3 = leftRotate1_16
((x3 ^ (round + 3)) +
(leftRotate8_16(x0) ^ k[(round + 3) % 16]));
}
/* Pack the state into the output block */
le_store_word16(output, x0);
le_store_word16(output + 2, x1);
le_store_word16(output + 4, x2);
le_store_word16(output + 6, x3);
}
comet/Implementations/crypto_aead/comet64speckv1/rhys/internal-cham.h 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LW_INTERNAL_CHAM_H
#define LW_INTERNAL_CHAM_H
/**
* \file internal-cham.h
* \brief CHAM block cipher.
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Encrypts a 128-bit block with CHAM-128-128.
*
* \param key Points to the 16 bytes of the key.
* \param output Output buffer which must be at least 16 bytes in length.
* \param input Input buffer which must be at least 16 bytes in length.
*
* The \a input and \a output buffers can be the same buffer for
* in-place encryption.
*/
void cham128_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input);
/**
* \brief Encrypts a 64-bit block with CHAM-64-128.
*
* \param key Points to the 16 bytes of the key.
* \param output Output buffer which must be at least 8 bytes in length.
* \param input Input buffer which must be at least 8 bytes in length.
*
* The \a input and \a output buffers can be the same buffer for
* in-place encryption.
*/
void cham64_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input);
#ifdef __cplusplus
}
#endif
#endif
drygascon/Implementations/crypto_aead/drygascon128/rhys/aead-common.c 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "aead-common.h"
int aead_check_tag
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = (accum - 1) >> 8;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
int aead_check_tag_precheck
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size, int precheck)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = ((accum - 1) >> 8) & precheck;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
drygascon/Implementations/crypto_aead/drygascon128/rhys/aead-common.h 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LWCRYPTO_AEAD_COMMON_H
#define LWCRYPTO_AEAD_COMMON_H
#include <stddef.h>
/**
* \file aead-common.h
* \brief Definitions that are common across AEAD schemes.
*
* AEAD stands for "Authenticated Encryption with Associated Data".
* It is a standard API pattern for securely encrypting and
* authenticating packets of data.
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Encrypts and authenticates a packet with an AEAD scheme.
*
* \param c Buffer to receive the output.
* \param clen On exit, set to the length of the output which includes
* the ciphertext and the authentication tag.
* \param m Buffer that contains the plaintext message to encrypt.
* \param mlen Length of the plaintext message in bytes.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param nsec Secret nonce - normally not used by AEAD schemes.
* \param npub Points to the public nonce for the packet.
* \param k Points to the key to use to encrypt the packet.
*
* \return 0 on success, or a negative value if there was an error in
* the parameters.
*/
typedef int (*aead_cipher_encrypt_t)
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Decrypts and authenticates a packet with an AEAD scheme.
*
* \param m Buffer to receive the plaintext message on output.
* \param mlen Receives the length of the plaintext message on output.
* \param nsec Secret nonce - normally not used by AEAD schemes.
* \param c Buffer that contains the ciphertext and authentication
* tag to decrypt.
* \param clen Length of the input data in bytes, which includes the
* ciphertext and the authentication tag.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param npub Points to the public nonce for the packet.
* \param k Points to the key to use to decrypt the packet.
*
* \return 0 on success, -1 if the authentication tag was incorrect,
* or some other negative number if there was an error in the parameters.
*/
typedef int (*aead_cipher_decrypt_t)
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Hashes a block of input data.
*
* \param out Buffer to receive the hash output.
* \param in Points to the input data to be hashed.
* \param inlen Length of the input data in bytes.
*
* \return Returns zero on success or -1 if there was an error in the
* parameters.
*/
typedef int (*aead_hash_t)
(unsigned char *out, const unsigned char *in, unsigned long long inlen);
/**
* \brief Initializes the state for a hashing operation.
*
* \param state Hash state to be initialized.
*/
typedef void (*aead_hash_init_t)(void *state);
/**
* \brief Updates a hash state with more input data.
*
* \param state Hash state to be updated.
* \param in Points to the input data to be incorporated into the state.
* \param inlen Length of the input data to be incorporated into the state.
*/
typedef void (*aead_hash_update_t)
(void *state, const unsigned char *in, unsigned long long inlen);
/**
* \brief Returns the final hash value from a hashing operation.
*
* \param Hash state to be finalized.
* \param out Points to the output buffer to receive the hash value.
*/
typedef void (*aead_hash_finalize_t)(void *state, unsigned char *out);
/**
* \brief Aborbs more input data into an XOF state.
*
* \param state XOF state to be updated.
* \param in Points to the input data to be absorbed into the state.
* \param inlen Length of the input data to be absorbed into the state.
*
* \sa ascon_xof_init(), ascon_xof_squeeze()
*/
typedef void (*aead_xof_absorb_t)
(void *state, const unsigned char *in, unsigned long long inlen);
/**
* \brief Squeezes output data from an XOF state.
*
* \param state XOF state to squeeze the output data from.
* \param out Points to the output buffer to receive the squeezed data.
* \param outlen Number of bytes of data to squeeze out of the state.
*/
typedef void (*aead_xof_squeeze_t)
(void *state, unsigned char *out, unsigned long long outlen);
/**
* \brief No special AEAD features.
*/
#define AEAD_FLAG_NONE 0x0000
/**
* \brief The natural byte order of the AEAD cipher is little-endian.
*
* If this flag is not present, then the natural byte order of the
* AEAD cipher should be assumed to be big-endian.
*
* The natural byte order may be useful when formatting packet sequence
* numbers as nonces. The application needs to know whether the sequence
* number should be packed into the leading or trailing bytes of the nonce.
*/
#define AEAD_FLAG_LITTLE_ENDIAN 0x0001
/**
* \brief Meta-information about an AEAD cipher.
*/
typedef struct
{
const char *name; /**< Name of the cipher */
unsigned key_len; /**< Length of the key in bytes */
unsigned nonce_len; /**< Length of the nonce in bytes */
unsigned tag_len; /**< Length of the tag in bytes */
unsigned flags; /**< Flags for extra features */
aead_cipher_encrypt_t encrypt; /**< AEAD encryption function */
aead_cipher_decrypt_t decrypt; /**< AEAD decryption function */
} aead_cipher_t;
/**
* \brief Meta-information about a hash algorithm that is related to an AEAD.
*
* Regular hash algorithms should provide the "hash", "init", "update",
* and "finalize" functions. Extensible Output Functions (XOF's) should
* proivde the "hash", "init", "absorb", and "squeeze" functions.
*/
typedef struct
{
const char *name; /**< Name of the hash algorithm */
size_t state_size; /**< Size of the incremental state structure */
unsigned hash_len; /**< Length of the hash in bytes */
unsigned flags; /**< Flags for extra features */
aead_hash_t hash; /**< All in one hashing function */
aead_hash_init_t init; /**< Incremental hash/XOF init function */
aead_hash_update_t update; /**< Incremental hash update function */
aead_hash_finalize_t finalize; /**< Incremental hash finalize function */
aead_xof_absorb_t absorb; /**< Incremental XOF absorb function */
aead_xof_squeeze_t squeeze; /**< Incremental XOF squeeze function */
} aead_hash_algorithm_t;
/**
* \brief Check an authentication tag in constant time.
*
* \param plaintext Points to the plaintext data.
* \param plaintext_len Length of the plaintext in bytes.
* \param tag1 First tag to compare.
* \param tag2 Second tag to compare.
* \param tag_len Length of the tags in bytes.
*
* \return Returns -1 if the tag check failed or 0 if the check succeeded.
*
* If the tag check fails, then the \a plaintext will also be zeroed to
* prevent it from being used accidentally by the application when the
* ciphertext was invalid.
*/
int aead_check_tag
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned tag_len);
/**
* \brief Check an authentication tag in constant time with a previous check.
*
* \param plaintext Points to the plaintext data.
* \param plaintext_len Length of the plaintext in bytes.
* \param tag1 First tag to compare.
* \param tag2 Second tag to compare.
* \param tag_len Length of the tags in bytes.
* \param precheck Set to -1 if previous check succeeded or 0 if it failed.
*
* \return Returns -1 if the tag check failed or 0 if the check succeeded.
*
* If the tag check fails, then the \a plaintext will also be zeroed to
* prevent it from being used accidentally by the application when the
* ciphertext was invalid.
*
* This version can be used to incorporate other information about the
* correctness of the plaintext into the final result.
*/
int aead_check_tag_precheck
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned tag_len, int precheck);
#ifdef __cplusplus
}
#endif
#endif
drygascon/Implementations/crypto_aead/drygascon128/rhys/api.h 0 → 100644
#define CRYPTO_KEYBYTES 16
#define CRYPTO_NSECBYTES 0
#define CRYPTO_NPUBBYTES 16
#define CRYPTO_ABYTES 16
#define CRYPTO_NOOVERLAP 1
drygascon/Implementations/crypto_aead/drygascon128/rhys/drygascon.h 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LWCRYPTO_DRYGASCON_H
#define LWCRYPTO_DRYGASCON_H
#include "aead-common.h"
/**
* \file drygascon.h
* \brief DryGASCON authenticated encryption algorithm.
*
* DryGASCON is a family of authenticated encryption algorithms based
* around a generalised version of the ASCON permutation. DryGASCON
* is designed to provide some protection against power analysis.
*
* There are four algorithms in the DryGASCON family:
*
* \li DryGASCON128 is an authenticated encryption algorithm with a
* 128-bit key, a 128-bit nonce, and a 128-bit authentication tag.
* \li DryGASCON256 is an authenticated encryption algorithm with a
* 256-bit key, a 128-bit nonce, and a 128-256 authentication tag.
* \li DryGASCON128-HASH is a hash algorithm with a 256-bit output.
* \li DryGASCON256-HASH is a hash algorithm with a 512-bit output.
*
* DryGASCON128 and DryGASCON128-HASH are the primary members of the family.
*
* References: https://github.com/sebastien-riou/DryGASCON
*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Size of the key for DryGASCON128.
*/
#define DRYGASCON128_KEY_SIZE 16
/**
* \brief Size of the authentication tag for DryGASCON128.
*/
#define DRYGASCON128_TAG_SIZE 16
/**
* \brief Size of the nonce for DryGASCON128.
*/
#define DRYGASCON128_NONCE_SIZE 16
/**
* \brief Size of the hash output for DryGASCON128-HASH.
*/
#define DRYGASCON128_HASH_SIZE 32
/**
* \brief Size of the key for DryGASCON256.
*/
#define DRYGASCON256_KEY_SIZE 32
/**
* \brief Size of the authentication tag for DryGASCON256.
*/
#define DRYGASCON256_TAG_SIZE 32
/**
* \brief Size of the nonce for DryGASCON256.
*/
#define DRYGASCON256_NONCE_SIZE 16
/**
* \brief Size of the hash output for DryGASCON256-HASH.
*/
#define DRYGASCON256_HASH_SIZE 64
/**
* \brief Meta-information block for the DryGASCON128 cipher.
*/
extern aead_cipher_t const drygascon128_cipher;
/**
* \brief Meta-information block for the DryGASCON256 cipher.
*/
extern aead_cipher_t const drygascon256_cipher;
/**
* \brief Meta-information block for DryGASCON128-HASH.
*/
extern aead_hash_algorithm_t const drygascon128_hash_algorithm;
/**
* \brief Meta-information block for DryGASCON256-HASH.
*/
extern aead_hash_algorithm_t const drygascon256_hash_algorithm;
/**
* \brief Encrypts and authenticates a packet with DryGASCON128.
*
* \param c Buffer to receive the output.
* \param clen On exit, set to the length of the output which includes
* the ciphertext and the 16 byte authentication tag.
* \param m Buffer that contains the plaintext message to encrypt.
* \param mlen Length of the plaintext message in bytes.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param nsec Secret nonce - not used by this algorithm.
* \param npub Points to the public nonce for the packet which must
* be 16 bytes in length.
* \param k Points to the 16 bytes of the key to use to encrypt the packet.
*
* \return 0 on success, or a negative value if there was an error in
* the parameters.
*
* \sa drygascon128_aead_decrypt()
*/
int drygascon128_aead_encrypt
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Decrypts and authenticates a packet with DryGASCON128.
*
* \param m Buffer to receive the plaintext message on output.
* \param mlen Receives the length of the plaintext message on output.
* \param nsec Secret nonce - not used by this algorithm.
* \param c Buffer that contains the ciphertext and authentication
* tag to decrypt.
* \param clen Length of the input data in bytes, which includes the
* ciphertext and the 16 byte authentication tag.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param npub Points to the public nonce for the packet which must
* be 16 bytes in length.
* \param k Points to the 16 bytes of the key to use to decrypt the packet.
*
* \return 0 on success, -1 if the authentication tag was incorrect,
* or some other negative number if there was an error in the parameters.
*
* \sa drygascon128_aead_encrypt()
*/
int drygascon128_aead_decrypt
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Encrypts and authenticates a packet with DryGASCON256.
*
* \param c Buffer to receive the output.
* \param clen On exit, set to the length of the output which includes
* the ciphertext and the 16 byte authentication tag.
* \param m Buffer that contains the plaintext message to encrypt.
* \param mlen Length of the plaintext message in bytes.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param nsec Secret nonce - not used by this algorithm.
* \param npub Points to the public nonce for the packet which must
* be 16 bytes in length.
* \param k Points to the 16 bytes of the key to use to encrypt the packet.
*
* \return 0 on success, or a negative value if there was an error in
* the parameters.
*
* \sa drygascon256_aead_decrypt()
*/
int drygascon256_aead_encrypt
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Decrypts and authenticates a packet with DryGASCON256.
*
* \param m Buffer to receive the plaintext message on output.
* \param mlen Receives the length of the plaintext message on output.
* \param nsec Secret nonce - not used by this algorithm.
* \param c Buffer that contains the ciphertext and authentication
* tag to decrypt.
* \param clen Length of the input data in bytes, which includes the
* ciphertext and the 16 byte authentication tag.
* \param ad Buffer that contains associated data to authenticate
* along with the packet but which does not need to be encrypted.
* \param adlen Length of the associated data in bytes.
* \param npub Points to the public nonce for the packet which must
* be 16 bytes in length.
* \param k Points to the 16 bytes of the key to use to decrypt the packet.
*
* \return 0 on success, -1 if the authentication tag was incorrect,
* or some other negative number if there was an error in the parameters.
*
* \sa drygascon256_aead_encrypt()
*/
int drygascon256_aead_decrypt
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k);
/**
* \brief Hashes a block of input data with DRYGASCON128.
*
* \param out Buffer to receive the hash output which must be at least
* DRYGASCON128_HASH_SIZE bytes in length.
* \param in Points to the input data to be hashed.
* \param inlen Length of the input data in bytes.
*
* \return Returns zero on success or -1 if there was an error in the
* parameters.
*/
int drygascon128_hash
(unsigned char *out, const unsigned char *in, unsigned long long inlen);
/**
* \brief Hashes a block of input data with DRYGASCON256.
*
* \param out Buffer to receive the hash output which must be at least
* DRYGASCON256_HASH_SIZE bytes in length.
* \param in Points to the input data to be hashed.
* \param inlen Length of the input data in bytes.
*
* \return Returns zero on success or -1 if there was an error in the
* parameters.
*/
int drygascon256_hash
(unsigned char *out, const unsigned char *in, unsigned long long inlen);
#ifdef __cplusplus
}
#endif
#endif
drygascon/Implementations/crypto_aead/drygascon128/rhys/encrypt.c 0 → 100644
#include "drygascon.h"
int crypto_aead_encrypt
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k)
{
return drygascon128_aead_encrypt
(c, clen, m, mlen, ad, adlen, nsec, npub, k);
}
int crypto_aead_decrypt
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k)
{
return drygascon128_aead_decrypt
(m, mlen, nsec, c, clen, ad, adlen, npub, k);
}
drygascon/Implementations/crypto_aead/drygascon256/rhys/aead-common.c 0 → 100644
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "aead-common.h"
int aead_check_tag
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = (accum - 1) >> 8;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
int aead_check_tag_precheck
(unsigned char *plaintext, unsigned long long plaintext_len,
const unsigned char *tag1, const unsigned char *tag2,
unsigned size, int precheck)
{
/* Set "accum" to -1 if the tags match, or 0 if they don't match */
int accum = 0;
while (size > 0) {
accum |= (*tag1++ ^ *tag2++);
--size;
}
accum = ((accum - 1) >> 8) & precheck;
/* Destroy the plaintext if the tag match failed */
while (plaintext_len > 0) {
*plaintext++ &= accum;
--plaintext_len;
}
/* If "accum" is 0, return -1, otherwise return 0 */
return ~accum;
}
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