forkae

forkae/Implementations/crypto_aead/paefforkskinnyb128t192n48v1/opt32_dec/aead-common.c

+/*
+ * 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;
+}

forkae/Implementations/crypto_aead/paefforkskinnyb128t192n48v1/opt32_dec/aead-common.h

+/*
+ * 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

forkae/Implementations/crypto_aead/paefforkskinnyb128t192n48v1/opt32_dec/api.h

+#define CRYPTO_KEYBYTES 16
+#define CRYPTO_NSECBYTES 0 
+#define CRYPTO_NPUBBYTES 6 
+#define CRYPTO_ABYTES 16 
+#define CRYPTO_NOOVERLAP 1 

forkae/Implementations/crypto_aead/paefforkskinnyb128t192n48v1/opt32_dec/encrypt.c

+
+#include "forkae.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 forkae_paef_128_192_aead_encrypt
+        (c, clen, m, mlen, a, 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 forkae_paef_128_192_aead_decrypt
+        (m, mlen, nsec, c, clen, ad, adlen, npub, k);
+}

forkae/Implementations/crypto_aead/paefforkskinnyb128t192n48v1/opt32_dec/forkae.c

+/*
+ * 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 "forkae.h"
+#include "internal-forkskinny.h"
+#include "internal-util.h"
+#include <string.h>
+
+aead_cipher_t const forkae_paef_64_192_cipher = {
+    "PAEF-ForkSkinny-64-192",
+    FORKAE_PAEF_64_192_KEY_SIZE,
+    FORKAE_PAEF_64_192_NONCE_SIZE,
+    FORKAE_PAEF_64_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_64_192_aead_encrypt,
+    forkae_paef_64_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_192_cipher = {
+    "PAEF-ForkSkinny-128-192",
+    FORKAE_PAEF_128_192_KEY_SIZE,
+    FORKAE_PAEF_128_192_NONCE_SIZE,
+    FORKAE_PAEF_128_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_192_aead_encrypt,
+    forkae_paef_128_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_256_cipher = {
+    "PAEF-ForkSkinny-128-256",
+    FORKAE_PAEF_128_256_KEY_SIZE,
+    FORKAE_PAEF_128_256_NONCE_SIZE,
+    FORKAE_PAEF_128_256_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_256_aead_encrypt,
+    forkae_paef_128_256_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_288_cipher = {
+    "PAEF-ForkSkinny-128-288",
+    FORKAE_PAEF_128_288_KEY_SIZE,
+    FORKAE_PAEF_128_288_NONCE_SIZE,
+    FORKAE_PAEF_128_288_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_288_aead_encrypt,
+    forkae_paef_128_288_aead_decrypt
+};
+
+aead_cipher_t const forkae_saef_128_192_cipher = {
+    "SAEF-ForkSkinny-128-192",
+    FORKAE_SAEF_128_192_KEY_SIZE,
+    FORKAE_SAEF_128_192_NONCE_SIZE,
+    FORKAE_SAEF_128_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_saef_128_192_aead_encrypt,
+    forkae_saef_128_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_saef_128_256_cipher = {
+    "SAEF-ForkSkinny-128-256",
+    FORKAE_SAEF_128_256_KEY_SIZE,
+    FORKAE_SAEF_128_256_NONCE_SIZE,
+    FORKAE_SAEF_128_256_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_saef_128_256_aead_encrypt,
+    forkae_saef_128_256_aead_decrypt
+};
+
+/* PAEF-ForkSkinny-64-192 */
+#define FORKAE_ALG_NAME forkae_paef_64_192
+#define FORKAE_BLOCK_SIZE 8
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_64_192_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 24
+#define FORKAE_BLOCK_FUNC forkskinny_64_192
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-192 */
+#define FORKAE_ALG_NAME forkae_paef_128_192
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_192_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-256 */
+#define FORKAE_ALG_NAME forkae_paef_128_256
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_256_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-288 */
+#define FORKAE_ALG_NAME forkae_paef_128_288
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_288_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 7
+#define FORKAE_TWEAKEY_SIZE 48
+#define FORKAE_BLOCK_FUNC forkskinny_128_384
+#include "internal-forkae-paef.h"
+
+/* SAEF-ForkSkinny-128-192 */
+#define FORKAE_ALG_NAME forkae_saef_128_192
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_SAEF_128_192_NONCE_SIZE
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_TWEAKEY_REDUCED_SIZE 24
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-saef.h"
+
+/* SAEF-ForkSkinny-128-256 */
+#define FORKAE_ALG_NAME forkae_saef_128_256
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_SAEF_128_256_NONCE_SIZE
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_TWEAKEY_REDUCED_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-saef.h"

forkae/Implementations/crypto_aead/paefforkskinnyb128t192n48v1/opt32_dec/internal-forkskinny.h

+/*
+ * 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_FORKSKINNY_H
+#define LW_INTERNAL_FORKSKINNY_H
+
+/**
+ * \file internal-forkskinny.h
+ * \brief ForkSkinny block cipher family.
+ *
+ * ForkSkinny is a modified version of the SKINNY block cipher that
+ * supports "forking": half-way through the rounds the cipher is
+ * forked in two different directions to produce two different outputs.
+ *
+ * References: https://www.esat.kuleuven.be/cosic/forkae/
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief Encrypts a block of plaintext with ForkSkinny-128-256.
+ *
+ * \param key 256-bit tweakey for ForkSkinny-128-256.
+ * \param output_left Left output block for the ciphertext, or NULL if
+ * the left output is not required.
+ * \param output_right Right output block for the authentication tag,
+ * or NULL if the right output is not required.
+ * \param input 128-bit input plaintext block.
+ *
+ * ForkSkinny-128-192 also uses this function with a padded tweakey.
+ */
+void forkskinny_128_256_encrypt
+    (const unsigned char key[32], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Decrypts a block of ciphertext with ForkSkinny-128-256.
+ *
+ * \param key 256-bit tweakey for ForkSkinny-128-256.
+ * \param output_left Left output block, which is the plaintext.
+ * \param output_right Right output block for the authentication tag.
+ * \param input 128-bit input ciphertext block.
+ *
+ * Both output blocks will be populated; neither is optional.
+ */
+void forkskinny_128_256_decrypt
+    (const unsigned char key[32], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Encrypts a block of plaintext with ForkSkinny-128-384.
+ *
+ * \param key 384-bit tweakey for ForkSkinny-128-384.
+ * \param output_left Left output block for the ciphertext, or NULL if
+ * the left output is not required.
+ * \param output_right Right output block for the authentication tag,
+ * or NULL if the right output is not required.
+ * \param input 128-bit input plaintext block.
+ *
+ * ForkSkinny-128-288 also uses this function with a padded tweakey.
+ */
+void forkskinny_128_384_encrypt
+    (const unsigned char key[48], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Decrypts a block of ciphertext with ForkSkinny-128-384.
+ *
+ * \param key 384-bit tweakey for ForkSkinny-128-384.
+ * \param output_left Left output block, which is the plaintext.
+ * \param output_right Right output block for the authentication tag.
+ * \param input 128-bit input ciphertext block.
+ *
+ * Both output blocks will be populated; neither is optional.
+ */
+void forkskinny_128_384_decrypt
+    (const unsigned char key[48], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Encrypts a block of input with ForkSkinny-64-192.
+ *
+ * \param key 192-bit tweakey for ForkSkinny-64-192.
+ * \param output_left First output block, or NULL if left is not required.
+ * \param output_right Second output block, or NULL if right is not required.
+ * \param input 64-bit input block.
+ */
+/**
+ * \brief Encrypts a block of plaintext with ForkSkinny-64-192.
+ *
+ * \param key 192-bit tweakey for ForkSkinny-64-192.
+ * \param output_left Left output block for the ciphertext, or NULL if
+ * the left output is not required.
+ * \param output_right Right output block for the authentication tag,
+ * or NULL if the right output is not required.
+ * \param input 64-bit input plaintext block.
+ */
+void forkskinny_64_192_encrypt
+    (const unsigned char key[24], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Decrypts a block of ciphertext with ForkSkinny-64-192.
+ *
+ * \param key 192-bit tweakey for ForkSkinny-64-192.
+ * \param output_left Left output block, which is the plaintext.
+ * \param output_right Right output block for the authentication tag.
+ * \param input 64-bit input ciphertext block.
+ *
+ * Both output blocks will be populated; neither is optional.
+ */
+void forkskinny_64_192_decrypt
+    (const unsigned char key[24], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

forkae/Implementations/crypto_aead/paefforkskinnyb128t192n48v1/opt32_table/aead-common.c

+/*
+ * 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;
+}

forkae/Implementations/crypto_aead/paefforkskinnyb128t192n48v1/opt32_table/aead-common.h

+/*
+ * 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

forkae/Implementations/crypto_aead/paefforkskinnyb128t192n48v1/opt32_table/api.h

+#define CRYPTO_KEYBYTES 16
+#define CRYPTO_NSECBYTES 0 
+#define CRYPTO_NPUBBYTES 6 
+#define CRYPTO_ABYTES 16 
+#define CRYPTO_NOOVERLAP 1 

forkae/Implementations/crypto_aead/paefforkskinnyb128t192n48v1/opt32_table/encrypt.c

+
+#include "forkae.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 forkae_paef_128_192_aead_encrypt
+        (c, clen, m, mlen, a, 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 forkae_paef_128_192_aead_decrypt
+        (m, mlen, nsec, c, clen, ad, adlen, npub, k);
+}

forkae/Implementations/crypto_aead/paefforkskinnyb128t192n48v1/opt32_table/forkae.c

+/*
+ * 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 "forkae.h"
+#include "internal-forkskinny.h"
+#include "internal-util.h"
+#include <string.h>
+
+aead_cipher_t const forkae_paef_64_192_cipher = {
+    "PAEF-ForkSkinny-64-192",
+    FORKAE_PAEF_64_192_KEY_SIZE,
+    FORKAE_PAEF_64_192_NONCE_SIZE,
+    FORKAE_PAEF_64_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_64_192_aead_encrypt,
+    forkae_paef_64_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_192_cipher = {
+    "PAEF-ForkSkinny-128-192",
+    FORKAE_PAEF_128_192_KEY_SIZE,
+    FORKAE_PAEF_128_192_NONCE_SIZE,
+    FORKAE_PAEF_128_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_192_aead_encrypt,
+    forkae_paef_128_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_256_cipher = {
+    "PAEF-ForkSkinny-128-256",
+    FORKAE_PAEF_128_256_KEY_SIZE,
+    FORKAE_PAEF_128_256_NONCE_SIZE,
+    FORKAE_PAEF_128_256_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_256_aead_encrypt,
+    forkae_paef_128_256_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_288_cipher = {
+    "PAEF-ForkSkinny-128-288",
+    FORKAE_PAEF_128_288_KEY_SIZE,
+    FORKAE_PAEF_128_288_NONCE_SIZE,
+    FORKAE_PAEF_128_288_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_288_aead_encrypt,
+    forkae_paef_128_288_aead_decrypt
+};
+
+aead_cipher_t const forkae_saef_128_192_cipher = {
+    "SAEF-ForkSkinny-128-192",
+    FORKAE_SAEF_128_192_KEY_SIZE,
+    FORKAE_SAEF_128_192_NONCE_SIZE,
+    FORKAE_SAEF_128_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_saef_128_192_aead_encrypt,
+    forkae_saef_128_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_saef_128_256_cipher = {
+    "SAEF-ForkSkinny-128-256",
+    FORKAE_SAEF_128_256_KEY_SIZE,
+    FORKAE_SAEF_128_256_NONCE_SIZE,
+    FORKAE_SAEF_128_256_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_saef_128_256_aead_encrypt,
+    forkae_saef_128_256_aead_decrypt
+};
+
+/* PAEF-ForkSkinny-64-192 */
+#define FORKAE_ALG_NAME forkae_paef_64_192
+#define FORKAE_BLOCK_SIZE 8
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_64_192_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 24
+#define FORKAE_BLOCK_FUNC forkskinny_64_192
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-192 */
+#define FORKAE_ALG_NAME forkae_paef_128_192
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_192_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-256 */
+#define FORKAE_ALG_NAME forkae_paef_128_256
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_256_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-288 */
+#define FORKAE_ALG_NAME forkae_paef_128_288
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_288_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 7
+#define FORKAE_TWEAKEY_SIZE 48
+#define FORKAE_BLOCK_FUNC forkskinny_128_384
+#include "internal-forkae-paef.h"
+
+/* SAEF-ForkSkinny-128-192 */
+#define FORKAE_ALG_NAME forkae_saef_128_192
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_SAEF_128_192_NONCE_SIZE
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_TWEAKEY_REDUCED_SIZE 24
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-saef.h"
+
+/* SAEF-ForkSkinny-128-256 */
+#define FORKAE_ALG_NAME forkae_saef_128_256
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_SAEF_128_256_NONCE_SIZE
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_TWEAKEY_REDUCED_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-saef.h"

forkae/Implementations/crypto_aead/paefforkskinnyb128t192n48v1/opt32_table/internal-forkskinny.h

+/*
+ * 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_FORKSKINNY_H
+#define LW_INTERNAL_FORKSKINNY_H
+
+/**
+ * \file internal-forkskinny.h
+ * \brief ForkSkinny block cipher family.
+ *
+ * ForkSkinny is a modified version of the SKINNY block cipher that
+ * supports "forking": half-way through the rounds the cipher is
+ * forked in two different directions to produce two different outputs.
+ *
+ * References: https://www.esat.kuleuven.be/cosic/forkae/
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief Encrypts a block of plaintext with ForkSkinny-128-256.
+ *
+ * \param key 256-bit tweakey for ForkSkinny-128-256.
+ * \param output_left Left output block for the ciphertext, or NULL if
+ * the left output is not required.
+ * \param output_right Right output block for the authentication tag,
+ * or NULL if the right output is not required.
+ * \param input 128-bit input plaintext block.
+ *
+ * ForkSkinny-128-192 also uses this function with a padded tweakey.
+ */
+void forkskinny_128_256_encrypt
+    (const unsigned char key[32], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Decrypts a block of ciphertext with ForkSkinny-128-256.
+ *
+ * \param key 256-bit tweakey for ForkSkinny-128-256.
+ * \param output_left Left output block, which is the plaintext.
+ * \param output_right Right output block for the authentication tag.
+ * \param input 128-bit input ciphertext block.
+ *
+ * Both output blocks will be populated; neither is optional.
+ */
+void forkskinny_128_256_decrypt
+    (const unsigned char key[32], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Encrypts a block of plaintext with ForkSkinny-128-384.
+ *
+ * \param key 384-bit tweakey for ForkSkinny-128-384.
+ * \param output_left Left output block for the ciphertext, or NULL if
+ * the left output is not required.
+ * \param output_right Right output block for the authentication tag,
+ * or NULL if the right output is not required.
+ * \param input 128-bit input plaintext block.
+ *
+ * ForkSkinny-128-288 also uses this function with a padded tweakey.
+ */
+void forkskinny_128_384_encrypt
+    (const unsigned char key[48], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Decrypts a block of ciphertext with ForkSkinny-128-384.
+ *
+ * \param key 384-bit tweakey for ForkSkinny-128-384.
+ * \param output_left Left output block, which is the plaintext.
+ * \param output_right Right output block for the authentication tag.
+ * \param input 128-bit input ciphertext block.
+ *
+ * Both output blocks will be populated; neither is optional.
+ */
+void forkskinny_128_384_decrypt
+    (const unsigned char key[48], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Encrypts a block of input with ForkSkinny-64-192.
+ *
+ * \param key 192-bit tweakey for ForkSkinny-64-192.
+ * \param output_left First output block, or NULL if left is not required.
+ * \param output_right Second output block, or NULL if right is not required.
+ * \param input 64-bit input block.
+ */
+/**
+ * \brief Encrypts a block of plaintext with ForkSkinny-64-192.
+ *
+ * \param key 192-bit tweakey for ForkSkinny-64-192.
+ * \param output_left Left output block for the ciphertext, or NULL if
+ * the left output is not required.
+ * \param output_right Right output block for the authentication tag,
+ * or NULL if the right output is not required.
+ * \param input 64-bit input plaintext block.
+ */
+void forkskinny_64_192_encrypt
+    (const unsigned char key[24], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Decrypts a block of ciphertext with ForkSkinny-64-192.
+ *
+ * \param key 192-bit tweakey for ForkSkinny-64-192.
+ * \param output_left Left output block, which is the plaintext.
+ * \param output_right Right output block for the authentication tag.
+ * \param input 64-bit input ciphertext block.
+ *
+ * Both output blocks will be populated; neither is optional.
+ */
+void forkskinny_64_192_decrypt
+    (const unsigned char key[24], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

forkae/Implementations/crypto_aead/paefforkskinnyb128t256n112v1/opt32_dec/aead-common.c

+/*
+ * 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;
+}

forkae/Implementations/crypto_aead/paefforkskinnyb128t256n112v1/opt32_dec/aead-common.h

+/*
+ * 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

forkae/Implementations/crypto_aead/paefforkskinnyb128t256n112v1/opt32_dec/api.h

+#define CRYPTO_KEYBYTES 16
+#define CRYPTO_NSECBYTES 0 
+#define CRYPTO_NPUBBYTES 14 
+#define CRYPTO_ABYTES 16 
+#define CRYPTO_NOOVERLAP 1 

forkae/Implementations/crypto_aead/paefforkskinnyb128t256n112v1/opt32_dec/encrypt.c

+
+#include "forkae.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 forkae_paef_128_256_aead_encrypt
+        (c, clen, m, mlen, a, 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 forkae_paef_128_256_aead_decrypt
+        (m, mlen, nsec, c, clen, ad, adlen, npub, k);
+}

forkae/Implementations/crypto_aead/paefforkskinnyb128t256n112v1/opt32_dec/forkae.c

+/*
+ * 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 "forkae.h"
+#include "internal-forkskinny.h"
+#include "internal-util.h"
+#include <string.h>
+
+aead_cipher_t const forkae_paef_64_192_cipher = {
+    "PAEF-ForkSkinny-64-192",
+    FORKAE_PAEF_64_192_KEY_SIZE,
+    FORKAE_PAEF_64_192_NONCE_SIZE,
+    FORKAE_PAEF_64_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_64_192_aead_encrypt,
+    forkae_paef_64_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_192_cipher = {
+    "PAEF-ForkSkinny-128-192",
+    FORKAE_PAEF_128_192_KEY_SIZE,
+    FORKAE_PAEF_128_192_NONCE_SIZE,
+    FORKAE_PAEF_128_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_192_aead_encrypt,
+    forkae_paef_128_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_256_cipher = {
+    "PAEF-ForkSkinny-128-256",
+    FORKAE_PAEF_128_256_KEY_SIZE,
+    FORKAE_PAEF_128_256_NONCE_SIZE,
+    FORKAE_PAEF_128_256_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_256_aead_encrypt,
+    forkae_paef_128_256_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_288_cipher = {
+    "PAEF-ForkSkinny-128-288",
+    FORKAE_PAEF_128_288_KEY_SIZE,
+    FORKAE_PAEF_128_288_NONCE_SIZE,
+    FORKAE_PAEF_128_288_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_288_aead_encrypt,
+    forkae_paef_128_288_aead_decrypt
+};
+
+aead_cipher_t const forkae_saef_128_192_cipher = {
+    "SAEF-ForkSkinny-128-192",
+    FORKAE_SAEF_128_192_KEY_SIZE,
+    FORKAE_SAEF_128_192_NONCE_SIZE,
+    FORKAE_SAEF_128_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_saef_128_192_aead_encrypt,
+    forkae_saef_128_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_saef_128_256_cipher = {
+    "SAEF-ForkSkinny-128-256",
+    FORKAE_SAEF_128_256_KEY_SIZE,
+    FORKAE_SAEF_128_256_NONCE_SIZE,
+    FORKAE_SAEF_128_256_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_saef_128_256_aead_encrypt,
+    forkae_saef_128_256_aead_decrypt
+};
+
+/* PAEF-ForkSkinny-64-192 */
+#define FORKAE_ALG_NAME forkae_paef_64_192
+#define FORKAE_BLOCK_SIZE 8
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_64_192_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 24
+#define FORKAE_BLOCK_FUNC forkskinny_64_192
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-192 */
+#define FORKAE_ALG_NAME forkae_paef_128_192
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_192_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-256 */
+#define FORKAE_ALG_NAME forkae_paef_128_256
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_256_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-288 */
+#define FORKAE_ALG_NAME forkae_paef_128_288
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_288_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 7
+#define FORKAE_TWEAKEY_SIZE 48
+#define FORKAE_BLOCK_FUNC forkskinny_128_384
+#include "internal-forkae-paef.h"
+
+/* SAEF-ForkSkinny-128-192 */
+#define FORKAE_ALG_NAME forkae_saef_128_192
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_SAEF_128_192_NONCE_SIZE
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_TWEAKEY_REDUCED_SIZE 24
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-saef.h"
+
+/* SAEF-ForkSkinny-128-256 */
+#define FORKAE_ALG_NAME forkae_saef_128_256
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_SAEF_128_256_NONCE_SIZE
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_TWEAKEY_REDUCED_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-saef.h"

forkae/Implementations/crypto_aead/paefforkskinnyb128t256n112v1/opt32_dec/internal-forkskinny.h

+/*
+ * 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_FORKSKINNY_H
+#define LW_INTERNAL_FORKSKINNY_H
+
+/**
+ * \file internal-forkskinny.h
+ * \brief ForkSkinny block cipher family.
+ *
+ * ForkSkinny is a modified version of the SKINNY block cipher that
+ * supports "forking": half-way through the rounds the cipher is
+ * forked in two different directions to produce two different outputs.
+ *
+ * References: https://www.esat.kuleuven.be/cosic/forkae/
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief Encrypts a block of plaintext with ForkSkinny-128-256.
+ *
+ * \param key 256-bit tweakey for ForkSkinny-128-256.
+ * \param output_left Left output block for the ciphertext, or NULL if
+ * the left output is not required.
+ * \param output_right Right output block for the authentication tag,
+ * or NULL if the right output is not required.
+ * \param input 128-bit input plaintext block.
+ *
+ * ForkSkinny-128-192 also uses this function with a padded tweakey.
+ */
+void forkskinny_128_256_encrypt
+    (const unsigned char key[32], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Decrypts a block of ciphertext with ForkSkinny-128-256.
+ *
+ * \param key 256-bit tweakey for ForkSkinny-128-256.
+ * \param output_left Left output block, which is the plaintext.
+ * \param output_right Right output block for the authentication tag.
+ * \param input 128-bit input ciphertext block.
+ *
+ * Both output blocks will be populated; neither is optional.
+ */
+void forkskinny_128_256_decrypt
+    (const unsigned char key[32], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Encrypts a block of plaintext with ForkSkinny-128-384.
+ *
+ * \param key 384-bit tweakey for ForkSkinny-128-384.
+ * \param output_left Left output block for the ciphertext, or NULL if
+ * the left output is not required.
+ * \param output_right Right output block for the authentication tag,
+ * or NULL if the right output is not required.
+ * \param input 128-bit input plaintext block.
+ *
+ * ForkSkinny-128-288 also uses this function with a padded tweakey.
+ */
+void forkskinny_128_384_encrypt
+    (const unsigned char key[48], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Decrypts a block of ciphertext with ForkSkinny-128-384.
+ *
+ * \param key 384-bit tweakey for ForkSkinny-128-384.
+ * \param output_left Left output block, which is the plaintext.
+ * \param output_right Right output block for the authentication tag.
+ * \param input 128-bit input ciphertext block.
+ *
+ * Both output blocks will be populated; neither is optional.
+ */
+void forkskinny_128_384_decrypt
+    (const unsigned char key[48], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Encrypts a block of input with ForkSkinny-64-192.
+ *
+ * \param key 192-bit tweakey for ForkSkinny-64-192.
+ * \param output_left First output block, or NULL if left is not required.
+ * \param output_right Second output block, or NULL if right is not required.
+ * \param input 64-bit input block.
+ */
+/**
+ * \brief Encrypts a block of plaintext with ForkSkinny-64-192.
+ *
+ * \param key 192-bit tweakey for ForkSkinny-64-192.
+ * \param output_left Left output block for the ciphertext, or NULL if
+ * the left output is not required.
+ * \param output_right Right output block for the authentication tag,
+ * or NULL if the right output is not required.
+ * \param input 64-bit input plaintext block.
+ */
+void forkskinny_64_192_encrypt
+    (const unsigned char key[24], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Decrypts a block of ciphertext with ForkSkinny-64-192.
+ *
+ * \param key 192-bit tweakey for ForkSkinny-64-192.
+ * \param output_left Left output block, which is the plaintext.
+ * \param output_right Right output block for the authentication tag.
+ * \param input 64-bit input ciphertext block.
+ *
+ * Both output blocks will be populated; neither is optional.
+ */
+void forkskinny_64_192_decrypt
+    (const unsigned char key[24], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

forkae/Implementations/crypto_aead/paefforkskinnyb128t256n112v1/opt32_table/aead-common.c

+/*
+ * 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;
+}

forkae/Implementations/crypto_aead/paefforkskinnyb128t256n112v1/opt32_table/aead-common.h

+/*
+ * 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

forkae/Implementations/crypto_aead/paefforkskinnyb128t256n112v1/opt32_table/api.h

+#define CRYPTO_KEYBYTES 16
+#define CRYPTO_NSECBYTES 0 
+#define CRYPTO_NPUBBYTES 14 
+#define CRYPTO_ABYTES 16 
+#define CRYPTO_NOOVERLAP 1 

forkae/Implementations/crypto_aead/paefforkskinnyb128t256n112v1/opt32_table/encrypt.c

+
+#include "forkae.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 forkae_paef_128_256_aead_encrypt
+        (c, clen, m, mlen, a, 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 forkae_paef_128_256_aead_decrypt
+        (m, mlen, nsec, c, clen, ad, adlen, npub, k);
+}

forkae/Implementations/crypto_aead/paefforkskinnyb128t256n112v1/opt32_table/forkae.c

+/*
+ * 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 "forkae.h"
+#include "internal-forkskinny.h"
+#include "internal-util.h"
+#include <string.h>
+
+aead_cipher_t const forkae_paef_64_192_cipher = {
+    "PAEF-ForkSkinny-64-192",
+    FORKAE_PAEF_64_192_KEY_SIZE,
+    FORKAE_PAEF_64_192_NONCE_SIZE,
+    FORKAE_PAEF_64_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_64_192_aead_encrypt,
+    forkae_paef_64_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_192_cipher = {
+    "PAEF-ForkSkinny-128-192",
+    FORKAE_PAEF_128_192_KEY_SIZE,
+    FORKAE_PAEF_128_192_NONCE_SIZE,
+    FORKAE_PAEF_128_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_192_aead_encrypt,
+    forkae_paef_128_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_256_cipher = {
+    "PAEF-ForkSkinny-128-256",
+    FORKAE_PAEF_128_256_KEY_SIZE,
+    FORKAE_PAEF_128_256_NONCE_SIZE,
+    FORKAE_PAEF_128_256_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_256_aead_encrypt,
+    forkae_paef_128_256_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_288_cipher = {
+    "PAEF-ForkSkinny-128-288",
+    FORKAE_PAEF_128_288_KEY_SIZE,
+    FORKAE_PAEF_128_288_NONCE_SIZE,
+    FORKAE_PAEF_128_288_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_288_aead_encrypt,
+    forkae_paef_128_288_aead_decrypt
+};
+
+aead_cipher_t const forkae_saef_128_192_cipher = {
+    "SAEF-ForkSkinny-128-192",
+    FORKAE_SAEF_128_192_KEY_SIZE,
+    FORKAE_SAEF_128_192_NONCE_SIZE,
+    FORKAE_SAEF_128_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_saef_128_192_aead_encrypt,
+    forkae_saef_128_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_saef_128_256_cipher = {
+    "SAEF-ForkSkinny-128-256",
+    FORKAE_SAEF_128_256_KEY_SIZE,
+    FORKAE_SAEF_128_256_NONCE_SIZE,
+    FORKAE_SAEF_128_256_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_saef_128_256_aead_encrypt,
+    forkae_saef_128_256_aead_decrypt
+};
+
+/* PAEF-ForkSkinny-64-192 */
+#define FORKAE_ALG_NAME forkae_paef_64_192
+#define FORKAE_BLOCK_SIZE 8
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_64_192_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 24
+#define FORKAE_BLOCK_FUNC forkskinny_64_192
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-192 */
+#define FORKAE_ALG_NAME forkae_paef_128_192
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_192_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-256 */
+#define FORKAE_ALG_NAME forkae_paef_128_256
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_256_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-288 */
+#define FORKAE_ALG_NAME forkae_paef_128_288
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_288_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 7
+#define FORKAE_TWEAKEY_SIZE 48
+#define FORKAE_BLOCK_FUNC forkskinny_128_384
+#include "internal-forkae-paef.h"
+
+/* SAEF-ForkSkinny-128-192 */
+#define FORKAE_ALG_NAME forkae_saef_128_192
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_SAEF_128_192_NONCE_SIZE
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_TWEAKEY_REDUCED_SIZE 24
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-saef.h"
+
+/* SAEF-ForkSkinny-128-256 */
+#define FORKAE_ALG_NAME forkae_saef_128_256
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_SAEF_128_256_NONCE_SIZE
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_TWEAKEY_REDUCED_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-saef.h"

forkae/Implementations/crypto_aead/paefforkskinnyb128t256n112v1/opt32_table/internal-forkskinny.h

+/*
+ * 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_FORKSKINNY_H
+#define LW_INTERNAL_FORKSKINNY_H
+
+/**
+ * \file internal-forkskinny.h
+ * \brief ForkSkinny block cipher family.
+ *
+ * ForkSkinny is a modified version of the SKINNY block cipher that
+ * supports "forking": half-way through the rounds the cipher is
+ * forked in two different directions to produce two different outputs.
+ *
+ * References: https://www.esat.kuleuven.be/cosic/forkae/
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief Encrypts a block of plaintext with ForkSkinny-128-256.
+ *
+ * \param key 256-bit tweakey for ForkSkinny-128-256.
+ * \param output_left Left output block for the ciphertext, or NULL if
+ * the left output is not required.
+ * \param output_right Right output block for the authentication tag,
+ * or NULL if the right output is not required.
+ * \param input 128-bit input plaintext block.
+ *
+ * ForkSkinny-128-192 also uses this function with a padded tweakey.
+ */
+void forkskinny_128_256_encrypt
+    (const unsigned char key[32], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Decrypts a block of ciphertext with ForkSkinny-128-256.
+ *
+ * \param key 256-bit tweakey for ForkSkinny-128-256.
+ * \param output_left Left output block, which is the plaintext.
+ * \param output_right Right output block for the authentication tag.
+ * \param input 128-bit input ciphertext block.
+ *
+ * Both output blocks will be populated; neither is optional.
+ */
+void forkskinny_128_256_decrypt
+    (const unsigned char key[32], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Encrypts a block of plaintext with ForkSkinny-128-384.
+ *
+ * \param key 384-bit tweakey for ForkSkinny-128-384.
+ * \param output_left Left output block for the ciphertext, or NULL if
+ * the left output is not required.
+ * \param output_right Right output block for the authentication tag,
+ * or NULL if the right output is not required.
+ * \param input 128-bit input plaintext block.
+ *
+ * ForkSkinny-128-288 also uses this function with a padded tweakey.
+ */
+void forkskinny_128_384_encrypt
+    (const unsigned char key[48], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Decrypts a block of ciphertext with ForkSkinny-128-384.
+ *
+ * \param key 384-bit tweakey for ForkSkinny-128-384.
+ * \param output_left Left output block, which is the plaintext.
+ * \param output_right Right output block for the authentication tag.
+ * \param input 128-bit input ciphertext block.
+ *
+ * Both output blocks will be populated; neither is optional.
+ */
+void forkskinny_128_384_decrypt
+    (const unsigned char key[48], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Encrypts a block of input with ForkSkinny-64-192.
+ *
+ * \param key 192-bit tweakey for ForkSkinny-64-192.
+ * \param output_left First output block, or NULL if left is not required.
+ * \param output_right Second output block, or NULL if right is not required.
+ * \param input 64-bit input block.
+ */
+/**
+ * \brief Encrypts a block of plaintext with ForkSkinny-64-192.
+ *
+ * \param key 192-bit tweakey for ForkSkinny-64-192.
+ * \param output_left Left output block for the ciphertext, or NULL if
+ * the left output is not required.
+ * \param output_right Right output block for the authentication tag,
+ * or NULL if the right output is not required.
+ * \param input 64-bit input plaintext block.
+ */
+void forkskinny_64_192_encrypt
+    (const unsigned char key[24], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Decrypts a block of ciphertext with ForkSkinny-64-192.
+ *
+ * \param key 192-bit tweakey for ForkSkinny-64-192.
+ * \param output_left Left output block, which is the plaintext.
+ * \param output_right Right output block for the authentication tag.
+ * \param input 64-bit input ciphertext block.
+ *
+ * Both output blocks will be populated; neither is optional.
+ */
+void forkskinny_64_192_decrypt
+    (const unsigned char key[24], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

forkae/Implementations/crypto_aead/paefforkskinnyb128t288n104v1/opt32_dec/aead-common.c

+/*
+ * 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;
+}

forkae/Implementations/crypto_aead/paefforkskinnyb128t288n104v1/opt32_dec/aead-common.h

+/*
+ * 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

forkae/Implementations/crypto_aead/paefforkskinnyb128t288n104v1/opt32_dec/api.h

+#define CRYPTO_KEYBYTES 16
+#define CRYPTO_NSECBYTES 0 
+#define CRYPTO_NPUBBYTES 13 
+#define CRYPTO_ABYTES 16 
+#define CRYPTO_NOOVERLAP 1 

forkae/Implementations/crypto_aead/paefforkskinnyb128t288n104v1/opt32_dec/encrypt.c

+
+#include "forkae.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 forkae_paef_128_288_aead_encrypt
+        (c, clen, m, mlen, a, 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 forkae_paef_128_288_aead_decrypt
+        (m, mlen, nsec, c, clen, ad, adlen, npub, k);
+}

forkae/Implementations/crypto_aead/paefforkskinnyb128t288n104v1/opt32_dec/forkae.c

+/*
+ * 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 "forkae.h"
+#include "internal-forkskinny.h"
+#include "internal-util.h"
+#include <string.h>
+
+aead_cipher_t const forkae_paef_64_192_cipher = {
+    "PAEF-ForkSkinny-64-192",
+    FORKAE_PAEF_64_192_KEY_SIZE,
+    FORKAE_PAEF_64_192_NONCE_SIZE,
+    FORKAE_PAEF_64_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_64_192_aead_encrypt,
+    forkae_paef_64_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_192_cipher = {
+    "PAEF-ForkSkinny-128-192",
+    FORKAE_PAEF_128_192_KEY_SIZE,
+    FORKAE_PAEF_128_192_NONCE_SIZE,
+    FORKAE_PAEF_128_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_192_aead_encrypt,
+    forkae_paef_128_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_256_cipher = {
+    "PAEF-ForkSkinny-128-256",
+    FORKAE_PAEF_128_256_KEY_SIZE,
+    FORKAE_PAEF_128_256_NONCE_SIZE,
+    FORKAE_PAEF_128_256_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_256_aead_encrypt,
+    forkae_paef_128_256_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_288_cipher = {
+    "PAEF-ForkSkinny-128-288",
+    FORKAE_PAEF_128_288_KEY_SIZE,
+    FORKAE_PAEF_128_288_NONCE_SIZE,
+    FORKAE_PAEF_128_288_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_288_aead_encrypt,
+    forkae_paef_128_288_aead_decrypt
+};
+
+aead_cipher_t const forkae_saef_128_192_cipher = {
+    "SAEF-ForkSkinny-128-192",
+    FORKAE_SAEF_128_192_KEY_SIZE,
+    FORKAE_SAEF_128_192_NONCE_SIZE,
+    FORKAE_SAEF_128_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_saef_128_192_aead_encrypt,
+    forkae_saef_128_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_saef_128_256_cipher = {
+    "SAEF-ForkSkinny-128-256",
+    FORKAE_SAEF_128_256_KEY_SIZE,
+    FORKAE_SAEF_128_256_NONCE_SIZE,
+    FORKAE_SAEF_128_256_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_saef_128_256_aead_encrypt,
+    forkae_saef_128_256_aead_decrypt
+};
+
+/* PAEF-ForkSkinny-64-192 */
+#define FORKAE_ALG_NAME forkae_paef_64_192
+#define FORKAE_BLOCK_SIZE 8
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_64_192_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 24
+#define FORKAE_BLOCK_FUNC forkskinny_64_192
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-192 */
+#define FORKAE_ALG_NAME forkae_paef_128_192
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_192_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-256 */
+#define FORKAE_ALG_NAME forkae_paef_128_256
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_256_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-288 */
+#define FORKAE_ALG_NAME forkae_paef_128_288
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_288_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 7
+#define FORKAE_TWEAKEY_SIZE 48
+#define FORKAE_BLOCK_FUNC forkskinny_128_384
+#include "internal-forkae-paef.h"
+
+/* SAEF-ForkSkinny-128-192 */
+#define FORKAE_ALG_NAME forkae_saef_128_192
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_SAEF_128_192_NONCE_SIZE
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_TWEAKEY_REDUCED_SIZE 24
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-saef.h"
+
+/* SAEF-ForkSkinny-128-256 */
+#define FORKAE_ALG_NAME forkae_saef_128_256
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_SAEF_128_256_NONCE_SIZE
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_TWEAKEY_REDUCED_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-saef.h"

forkae/Implementations/crypto_aead/paefforkskinnyb128t288n104v1/opt32_dec/internal-forkskinny.h

+/*
+ * 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_FORKSKINNY_H
+#define LW_INTERNAL_FORKSKINNY_H
+
+/**
+ * \file internal-forkskinny.h
+ * \brief ForkSkinny block cipher family.
+ *
+ * ForkSkinny is a modified version of the SKINNY block cipher that
+ * supports "forking": half-way through the rounds the cipher is
+ * forked in two different directions to produce two different outputs.
+ *
+ * References: https://www.esat.kuleuven.be/cosic/forkae/
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief Encrypts a block of plaintext with ForkSkinny-128-256.
+ *
+ * \param key 256-bit tweakey for ForkSkinny-128-256.
+ * \param output_left Left output block for the ciphertext, or NULL if
+ * the left output is not required.
+ * \param output_right Right output block for the authentication tag,
+ * or NULL if the right output is not required.
+ * \param input 128-bit input plaintext block.
+ *
+ * ForkSkinny-128-192 also uses this function with a padded tweakey.
+ */
+void forkskinny_128_256_encrypt
+    (const unsigned char key[32], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Decrypts a block of ciphertext with ForkSkinny-128-256.
+ *
+ * \param key 256-bit tweakey for ForkSkinny-128-256.
+ * \param output_left Left output block, which is the plaintext.
+ * \param output_right Right output block for the authentication tag.
+ * \param input 128-bit input ciphertext block.
+ *
+ * Both output blocks will be populated; neither is optional.
+ */
+void forkskinny_128_256_decrypt
+    (const unsigned char key[32], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Encrypts a block of plaintext with ForkSkinny-128-384.
+ *
+ * \param key 384-bit tweakey for ForkSkinny-128-384.
+ * \param output_left Left output block for the ciphertext, or NULL if
+ * the left output is not required.
+ * \param output_right Right output block for the authentication tag,
+ * or NULL if the right output is not required.
+ * \param input 128-bit input plaintext block.
+ *
+ * ForkSkinny-128-288 also uses this function with a padded tweakey.
+ */
+void forkskinny_128_384_encrypt
+    (const unsigned char key[48], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Decrypts a block of ciphertext with ForkSkinny-128-384.
+ *
+ * \param key 384-bit tweakey for ForkSkinny-128-384.
+ * \param output_left Left output block, which is the plaintext.
+ * \param output_right Right output block for the authentication tag.
+ * \param input 128-bit input ciphertext block.
+ *
+ * Both output blocks will be populated; neither is optional.
+ */
+void forkskinny_128_384_decrypt
+    (const unsigned char key[48], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Encrypts a block of input with ForkSkinny-64-192.
+ *
+ * \param key 192-bit tweakey for ForkSkinny-64-192.
+ * \param output_left First output block, or NULL if left is not required.
+ * \param output_right Second output block, or NULL if right is not required.
+ * \param input 64-bit input block.
+ */
+/**
+ * \brief Encrypts a block of plaintext with ForkSkinny-64-192.
+ *
+ * \param key 192-bit tweakey for ForkSkinny-64-192.
+ * \param output_left Left output block for the ciphertext, or NULL if
+ * the left output is not required.
+ * \param output_right Right output block for the authentication tag,
+ * or NULL if the right output is not required.
+ * \param input 64-bit input plaintext block.
+ */
+void forkskinny_64_192_encrypt
+    (const unsigned char key[24], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+/**
+ * \brief Decrypts a block of ciphertext with ForkSkinny-64-192.
+ *
+ * \param key 192-bit tweakey for ForkSkinny-64-192.
+ * \param output_left Left output block, which is the plaintext.
+ * \param output_right Right output block for the authentication tag.
+ * \param input 64-bit input ciphertext block.
+ *
+ * Both output blocks will be populated; neither is optional.
+ */
+void forkskinny_64_192_decrypt
+    (const unsigned char key[24], unsigned char *output_left,
+     unsigned char *output_right, const unsigned char *input);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

forkae/Implementations/crypto_aead/paefforkskinnyb128t288n104v1/opt32_table/aead-common.c

+/*
+ * 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;
+}

forkae/Implementations/crypto_aead/paefforkskinnyb128t288n104v1/opt32_table/aead-common.h

+/*
+ * 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

forkae/Implementations/crypto_aead/paefforkskinnyb128t288n104v1/opt32_table/api.h

+#define CRYPTO_KEYBYTES 16
+#define CRYPTO_NSECBYTES 0 
+#define CRYPTO_NPUBBYTES 13 
+#define CRYPTO_ABYTES 16 
+#define CRYPTO_NOOVERLAP 1 

forkae/Implementations/crypto_aead/paefforkskinnyb128t288n104v1/opt32_table/encrypt.c

+
+#include "forkae.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 forkae_paef_128_288_aead_encrypt
+        (c, clen, m, mlen, a, 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 forkae_paef_128_288_aead_decrypt
+        (m, mlen, nsec, c, clen, ad, adlen, npub, k);
+}

forkae/Implementations/crypto_aead/paefforkskinnyb128t288n104v1/opt32_table/forkae.c

+/*
+ * 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 "forkae.h"
+#include "internal-forkskinny.h"
+#include "internal-util.h"
+#include <string.h>
+
+aead_cipher_t const forkae_paef_64_192_cipher = {
+    "PAEF-ForkSkinny-64-192",
+    FORKAE_PAEF_64_192_KEY_SIZE,
+    FORKAE_PAEF_64_192_NONCE_SIZE,
+    FORKAE_PAEF_64_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_64_192_aead_encrypt,
+    forkae_paef_64_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_192_cipher = {
+    "PAEF-ForkSkinny-128-192",
+    FORKAE_PAEF_128_192_KEY_SIZE,
+    FORKAE_PAEF_128_192_NONCE_SIZE,
+    FORKAE_PAEF_128_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_192_aead_encrypt,
+    forkae_paef_128_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_256_cipher = {
+    "PAEF-ForkSkinny-128-256",
+    FORKAE_PAEF_128_256_KEY_SIZE,
+    FORKAE_PAEF_128_256_NONCE_SIZE,
+    FORKAE_PAEF_128_256_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_256_aead_encrypt,
+    forkae_paef_128_256_aead_decrypt
+};
+
+aead_cipher_t const forkae_paef_128_288_cipher = {
+    "PAEF-ForkSkinny-128-288",
+    FORKAE_PAEF_128_288_KEY_SIZE,
+    FORKAE_PAEF_128_288_NONCE_SIZE,
+    FORKAE_PAEF_128_288_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_paef_128_288_aead_encrypt,
+    forkae_paef_128_288_aead_decrypt
+};
+
+aead_cipher_t const forkae_saef_128_192_cipher = {
+    "SAEF-ForkSkinny-128-192",
+    FORKAE_SAEF_128_192_KEY_SIZE,
+    FORKAE_SAEF_128_192_NONCE_SIZE,
+    FORKAE_SAEF_128_192_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_saef_128_192_aead_encrypt,
+    forkae_saef_128_192_aead_decrypt
+};
+
+aead_cipher_t const forkae_saef_128_256_cipher = {
+    "SAEF-ForkSkinny-128-256",
+    FORKAE_SAEF_128_256_KEY_SIZE,
+    FORKAE_SAEF_128_256_NONCE_SIZE,
+    FORKAE_SAEF_128_256_TAG_SIZE,
+    AEAD_FLAG_NONE,
+    forkae_saef_128_256_aead_encrypt,
+    forkae_saef_128_256_aead_decrypt
+};
+
+/* PAEF-ForkSkinny-64-192 */
+#define FORKAE_ALG_NAME forkae_paef_64_192
+#define FORKAE_BLOCK_SIZE 8
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_64_192_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 24
+#define FORKAE_BLOCK_FUNC forkskinny_64_192
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-192 */
+#define FORKAE_ALG_NAME forkae_paef_128_192
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_192_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-256 */
+#define FORKAE_ALG_NAME forkae_paef_128_256
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_256_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 2
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-paef.h"
+
+/* PAEF-ForkSkinny-128-288 */
+#define FORKAE_ALG_NAME forkae_paef_128_288
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_PAEF_128_288_NONCE_SIZE
+#define FORKAE_COUNTER_SIZE 7
+#define FORKAE_TWEAKEY_SIZE 48
+#define FORKAE_BLOCK_FUNC forkskinny_128_384
+#include "internal-forkae-paef.h"
+
+/* SAEF-ForkSkinny-128-192 */
+#define FORKAE_ALG_NAME forkae_saef_128_192
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_SAEF_128_192_NONCE_SIZE
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_TWEAKEY_REDUCED_SIZE 24
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-saef.h"
+
+/* SAEF-ForkSkinny-128-256 */
+#define FORKAE_ALG_NAME forkae_saef_128_256
+#define FORKAE_BLOCK_SIZE 16
+#define FORKAE_NONCE_SIZE FORKAE_SAEF_128_256_NONCE_SIZE
+#define FORKAE_TWEAKEY_SIZE 32
+#define FORKAE_TWEAKEY_REDUCED_SIZE 32
+#define FORKAE_BLOCK_FUNC forkskinny_128_256
+#include "internal-forkae-saef.h"