Commit c2960695 by Enrico Pozzobon

Merge branch 'master' into patched-for-tester

parents bff74371 745e7f1d

Too many changes to show.

To preserve performance only 1000 of 1000+ files are displayed.

...@@ -188,10 +188,10 @@ sliscp_light320_permute: ...@@ -188,10 +188,10 @@ sliscp_light320_permute:
ldd r12,Z+33 ldd r12,Z+33
ldd r11,Z+34 ldd r11,Z+34
ldd r10,Z+35 ldd r10,Z+35
ldd r25,Z+26 ldd r25,Z+36
ldd r24,Z+27 ldd r24,Z+37
ldd r15,Z+28 ldd r15,Z+38
ldd r14,Z+29 ldd r14,Z+39
push r31 push r31
push r30 push r30
ldi r30,lo8(table_0) ldi r30,lo8(table_0)
......
...@@ -22,6 +22,8 @@ ...@@ -22,6 +22,8 @@
#include "internal-sliscp-light.h" #include "internal-sliscp-light.h"
#if !defined(__AVR__)
/** /**
* \brief Performs one round of the Simeck-64 block cipher. * \brief Performs one round of the Simeck-64 block cipher.
* *
...@@ -173,11 +175,12 @@ void sliscp_light256_swap_spix(unsigned char block[32]) ...@@ -173,11 +175,12 @@ void sliscp_light256_swap_spix(unsigned char block[32])
le_store_word32(block + 12, t2); le_store_word32(block + 12, t2);
} }
void sliscp_light256_permute_spoc(unsigned char block[32], unsigned rounds) void sliscp_light256_permute_spoc(unsigned char block[32])
{ {
const unsigned char *rc = sliscp_light256_RC; const unsigned char *rc = sliscp_light256_RC;
uint32_t x0, x1, x2, x3, x4, x5, x6, x7; uint32_t x0, x1, x2, x3, x4, x5, x6, x7;
uint32_t t0, t1; uint32_t t0, t1;
unsigned round;
/* Load the block into local state variables */ /* Load the block into local state variables */
x0 = be_load_word32(block); x0 = be_load_word32(block);
...@@ -190,7 +193,7 @@ void sliscp_light256_permute_spoc(unsigned char block[32], unsigned rounds) ...@@ -190,7 +193,7 @@ void sliscp_light256_permute_spoc(unsigned char block[32], unsigned rounds)
x7 = be_load_word32(block + 28); x7 = be_load_word32(block + 28);
/* Perform all permutation rounds */ /* Perform all permutation rounds */
for (; rounds > 0; --rounds, rc += 4) { for (round = 0; round < 18; ++round, rc += 4) {
/* Apply Simeck-64 to two of the 64-bit sub-blocks */ /* Apply Simeck-64 to two of the 64-bit sub-blocks */
simeck64_box(x2, x3, rc[0]); simeck64_box(x2, x3, rc[0]);
simeck64_box(x6, x7, rc[1]); simeck64_box(x6, x7, rc[1]);
...@@ -406,3 +409,5 @@ void sliscp_light320_swap(unsigned char block[40]) ...@@ -406,3 +409,5 @@ void sliscp_light320_swap(unsigned char block[40])
le_store_word32(block + 16, t1); le_store_word32(block + 16, t1);
le_store_word32(block + 4, t2); le_store_word32(block + 4, t2);
} }
#endif /* !__AVR__ */
...@@ -92,7 +92,6 @@ void sliscp_light256_swap_spix(unsigned char block[32]); ...@@ -92,7 +92,6 @@ void sliscp_light256_swap_spix(unsigned char block[32]);
* \brief Performs the sLiSCP-light permutation on a 256-bit block. * \brief Performs the sLiSCP-light permutation on a 256-bit block.
* *
* \param block Points to the block to be permuted. * \param block Points to the block to be permuted.
* \param rounds Number of rounds to be performed, usually 9 or 18.
* *
* The bytes of the block are assumed to be rearranged to match the * The bytes of the block are assumed to be rearranged to match the
* requirements of the SpoC-128 cipher. SpoC-128 interleaves the * requirements of the SpoC-128 cipher. SpoC-128 interleaves the
...@@ -112,7 +111,7 @@ void sliscp_light256_swap_spix(unsigned char block[32]); ...@@ -112,7 +111,7 @@ void sliscp_light256_swap_spix(unsigned char block[32]);
* *
* \sa sliscp_light256_swap_spoc() * \sa sliscp_light256_swap_spoc()
*/ */
void sliscp_light256_permute_spoc(unsigned char block[32], unsigned rounds); void sliscp_light256_permute_spoc(unsigned char block[32]);
/** /**
* \brief Swaps rate bytes in a sLiSCP-light 256-bit block for SpoC-128. * \brief Swaps rate bytes in a sLiSCP-light 256-bit block for SpoC-128.
......
...@@ -238,6 +238,17 @@ ...@@ -238,6 +238,17 @@
} \ } \
} while (0) } while (0)
/* Rotation functions need to be optimised for best performance on AVR.
* The most efficient rotations are where the number of bits is 1 or a
* multiple of 8, so we compose the efficient rotations to produce all
* other rotation counts of interest. */
#if defined(__AVR__)
#define LW_CRYPTO_ROTATE32_COMPOSED 1
#else
#define LW_CRYPTO_ROTATE32_COMPOSED 0
#endif
/* Rotation macros for 32-bit arguments */ /* Rotation macros for 32-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
...@@ -254,6 +265,8 @@ ...@@ -254,6 +265,8 @@
(_temp >> (bits)) | (_temp << (32 - (bits))); \ (_temp >> (bits)) | (_temp << (32 - (bits))); \
})) }))
#if !LW_CRYPTO_ROTATE32_COMPOSED
/* Left rotate by a specific number of bits. These macros may be replaced /* Left rotate by a specific number of bits. These macros may be replaced
* with more efficient ones on platforms that lack a barrel shifter */ * with more efficient ones on platforms that lack a barrel shifter */
#define leftRotate1(a) (leftRotate((a), 1)) #define leftRotate1(a) (leftRotate((a), 1))
...@@ -322,6 +335,138 @@ ...@@ -322,6 +335,138 @@
#define rightRotate30(a) (rightRotate((a), 30)) #define rightRotate30(a) (rightRotate((a), 30))
#define rightRotate31(a) (rightRotate((a), 31)) #define rightRotate31(a) (rightRotate((a), 31))
#else /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Composed rotation macros where 1 and 8 are fast, but others are slow */
/* Left rotate by 1 */
#define leftRotate1(a) (leftRotate((a), 1))
/* Left rotate by 2 */
#define leftRotate2(a) (leftRotate(leftRotate((a), 1), 1))
/* Left rotate by 3 */
#define leftRotate3(a) (leftRotate(leftRotate(leftRotate((a), 1), 1), 1))
/* Left rotate by 4 */
#define leftRotate4(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 1), 1), 1), 1))
/* Left rotate by 5: Rotate left by 8, then right by 3 */
#define leftRotate5(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 6: Rotate left by 8, then right by 2 */
#define leftRotate6(a) (rightRotate(rightRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 7: Rotate left by 8, then right by 1 */
#define leftRotate7(a) (rightRotate(leftRotate((a), 8), 1))
/* Left rotate by 8 */
#define leftRotate8(a) (leftRotate((a), 8))
/* Left rotate by 9: Rotate left by 8, then left by 1 */
#define leftRotate9(a) (leftRotate(leftRotate((a), 8), 1))
/* Left rotate by 10: Rotate left by 8, then left by 2 */
#define leftRotate10(a) (leftRotate(leftRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 11: Rotate left by 8, then left by 3 */
#define leftRotate11(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 12: Rotate left by 16, then right by 4 */
#define leftRotate12(a) (rightRotate(rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 13: Rotate left by 16, then right by 3 */
#define leftRotate13(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 14: Rotate left by 16, then right by 2 */
#define leftRotate14(a) (rightRotate(rightRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 15: Rotate left by 16, then right by 1 */
#define leftRotate15(a) (rightRotate(leftRotate((a), 16), 1))
/* Left rotate by 16 */
#define leftRotate16(a) (leftRotate((a), 16))
/* Left rotate by 17: Rotate left by 16, then left by 1 */
#define leftRotate17(a) (leftRotate(leftRotate((a), 16), 1))
/* Left rotate by 18: Rotate left by 16, then left by 2 */
#define leftRotate18(a) (leftRotate(leftRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 19: Rotate left by 16, then left by 3 */
#define leftRotate19(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 20: Rotate left by 16, then left by 4 */
#define leftRotate20(a) (leftRotate(leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 21: Rotate left by 24, then right by 3 */
#define leftRotate21(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 22: Rotate left by 24, then right by 2 */
#define leftRotate22(a) (rightRotate(rightRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 23: Rotate left by 24, then right by 1 */
#define leftRotate23(a) (rightRotate(leftRotate((a), 24), 1))
/* Left rotate by 24 */
#define leftRotate24(a) (leftRotate((a), 24))
/* Left rotate by 25: Rotate left by 24, then left by 1 */
#define leftRotate25(a) (leftRotate(leftRotate((a), 24), 1))
/* Left rotate by 26: Rotate left by 24, then left by 2 */
#define leftRotate26(a) (leftRotate(leftRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 27: Rotate left by 24, then left by 3 */
#define leftRotate27(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 28: Rotate right by 4 */
#define leftRotate28(a) (rightRotate(rightRotate(rightRotate(rightRotate((a), 1), 1), 1), 1))
/* Left rotate by 29: Rotate right by 3 */
#define leftRotate29(a) (rightRotate(rightRotate(rightRotate((a), 1), 1), 1))
/* Left rotate by 30: Rotate right by 2 */
#define leftRotate30(a) (rightRotate(rightRotate((a), 1), 1))
/* Left rotate by 31: Rotate right by 1 */
#define leftRotate31(a) (rightRotate((a), 1))
/* Define the 32-bit right rotations in terms of left rotations */
#define rightRotate1(a) (leftRotate31((a)))
#define rightRotate2(a) (leftRotate30((a)))
#define rightRotate3(a) (leftRotate29((a)))
#define rightRotate4(a) (leftRotate28((a)))
#define rightRotate5(a) (leftRotate27((a)))
#define rightRotate6(a) (leftRotate26((a)))
#define rightRotate7(a) (leftRotate25((a)))
#define rightRotate8(a) (leftRotate24((a)))
#define rightRotate9(a) (leftRotate23((a)))
#define rightRotate10(a) (leftRotate22((a)))
#define rightRotate11(a) (leftRotate21((a)))
#define rightRotate12(a) (leftRotate20((a)))
#define rightRotate13(a) (leftRotate19((a)))
#define rightRotate14(a) (leftRotate18((a)))
#define rightRotate15(a) (leftRotate17((a)))
#define rightRotate16(a) (leftRotate16((a)))
#define rightRotate17(a) (leftRotate15((a)))
#define rightRotate18(a) (leftRotate14((a)))
#define rightRotate19(a) (leftRotate13((a)))
#define rightRotate20(a) (leftRotate12((a)))
#define rightRotate21(a) (leftRotate11((a)))
#define rightRotate22(a) (leftRotate10((a)))
#define rightRotate23(a) (leftRotate9((a)))
#define rightRotate24(a) (leftRotate8((a)))
#define rightRotate25(a) (leftRotate7((a)))
#define rightRotate26(a) (leftRotate6((a)))
#define rightRotate27(a) (leftRotate5((a)))
#define rightRotate28(a) (leftRotate4((a)))
#define rightRotate29(a) (leftRotate3((a)))
#define rightRotate30(a) (leftRotate2((a)))
#define rightRotate31(a) (leftRotate1((a)))
#endif /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Rotation macros for 64-bit arguments */ /* Rotation macros for 64-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
......
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef LW_INTERNAL_SLISCP_LIGHT_H
#define LW_INTERNAL_SLISCP_LIGHT_H
/**
* \file internal-sliscp-light.h
* \brief sLiSCP-light permutation
*
* There are three variants of sLiSCP-light in use in the NIST submissions:
*
* \li sLiSCP-light-256 with a 256-bit block size, used in SPIX and SpoC.
* \li sLiSCP-light-192 with a 192-bit block size, used in SpoC.
* \li sLiSCP-light-320 with a 320-bit block size, used in ACE.
*
* References: https://uwaterloo.ca/communications-security-lab/lwc/ace,
* https://uwaterloo.ca/communications-security-lab/lwc/spix,
* https://uwaterloo.ca/communications-security-lab/lwc/spoc
*/
#include "internal-util.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Size of the state for sLiSCP-light-256.
*/
#define SLISCP_LIGHT256_STATE_SIZE 32
/**
* \brief Size of the state for sLiSCP-light-192.
*/
#define SLISCP_LIGHT192_STATE_SIZE 24
/**
* \brief Size of the state for sLiSCP-light-320.
*/
#define SLISCP_LIGHT320_STATE_SIZE 40
/**
* \brief Performs the sLiSCP-light permutation on a 256-bit block.
*
* \param block Points to the block to be permuted.
* \param rounds Number of rounds to be performed, usually 9 or 18.
*
* The bytes of the block are assumed to be rearranged to match the
* requirements of the SPIX cipher. SPIX places the rate bytes at
* positions 8, 9, 10, 11, 24, 25, 26, and 27.
*
* This function assumes that bytes 24-27 have been pre-swapped with
* bytes 12-15 so that the rate portion of the state is contiguous.
*
* The sliscp_light256_swap_spix() function can be used to switch
* between the canonical order and the pre-swapped order.
*
* \sa sliscp_light256_swap_spix()
*/
void sliscp_light256_permute_spix(unsigned char block[32], unsigned rounds);
/**
* \brief Swaps rate bytes in a sLiSCP-light 256-bit block for SPIX.
*
* \param block Points to the block to be rate-swapped.
*
* \sa sliscp_light256_permute_spix()
*/
void sliscp_light256_swap_spix(unsigned char block[32]);
/**
* \brief Performs the sLiSCP-light permutation on a 256-bit block.
*
* \param block Points to the block to be permuted.
*
* The bytes of the block are assumed to be rearranged to match the
* requirements of the SpoC-128 cipher. SpoC-128 interleaves the
* rate bytes and the mask bytes. This version assumes that the
* rate and mask are in contiguous bytes of the state.
*
* SpoC-128 absorbs bytes using the mask bytes of the state at offsets
* 8, 9, 10, 11, 12, 13, 14, 15, 24, 25, 26, 27, 28, 29, 30, and 31.
* It squeezes bytes using the rate bytes of the state at offsets
* 0, 1, 2, 3, 4, 5, 6, 7, 16, 17, 18, 19, 20, 21, 22, and 23.
*
* This function assumes that bytes 8-15 have been pre-swapped with 16-23
* so that the rate and mask portions of the state are contiguous.
*
* The sliscp_light256_swap_spoc() function can be used to switch
* between the canonical order and the pre-swapped order.
*
* \sa sliscp_light256_swap_spoc()
*/
void sliscp_light256_permute_spoc(unsigned char block[32]);
/**
* \brief Swaps rate bytes in a sLiSCP-light 256-bit block for SpoC-128.
*
* \param block Points to the block to be rate-swapped.
*
* \sa sliscp_light256_permute_spoc()
*/
void sliscp_light256_swap_spoc(unsigned char block[32]);
/**
* \brief Performs the sLiSCP-light permutation on a 192-bit block.
*
* \param block Points to the block to be permuted.
*/
void sliscp_light192_permute(unsigned char block[24]);
/**
* \brief Performs the sLiSCP-light permutation on a 320-bit block.
*
* \param block Points to the block to be permuted.
*
* The ACE specification refers to this permutation as "ACE" but that
* can be confused with the name of the AEAD mode so we call this
* permutation "sLiSCP-light-320" instead.
*
* ACE absorbs and squeezes data at the rate bytes 0, 1, 2, 3, 16, 17, 18, 19.
* Efficiency can suffer because of the discontinuity in rate byte positions.
*
* To counteract this, we assume that the input to the permutation has been
* pre-swapped: bytes 4, 5, 6, 7 are swapped with bytes 16, 17, 18, 19 so
* that the rate is contiguous at the start of the state.
*
* The sliscp_light320_swap() function can be used to switch between the
* canonical order and the pre-swapped order.
*
* \sa sliscp_light320_swap()
*/
void sliscp_light320_permute(unsigned char block[40]);
/**
* \brief Swaps rate bytes in a sLiSCP-light 320-bit block.
*
* \param block Points to the block to be rate-swapped.
*
* \sa sliscp_light320_permute()
*/
void sliscp_light320_swap(unsigned char block[40]);
#ifdef __cplusplus
}
#endif
#endif
...@@ -188,10 +188,10 @@ sliscp_light320_permute: ...@@ -188,10 +188,10 @@ sliscp_light320_permute:
ldd r12,Z+33 ldd r12,Z+33
ldd r11,Z+34 ldd r11,Z+34
ldd r10,Z+35 ldd r10,Z+35
ldd r25,Z+26 ldd r25,Z+36
ldd r24,Z+27 ldd r24,Z+37
ldd r15,Z+28 ldd r15,Z+38
ldd r14,Z+29 ldd r14,Z+39
push r31 push r31
push r30 push r30
ldi r30,lo8(table_0) ldi r30,lo8(table_0)
......
...@@ -22,6 +22,8 @@ ...@@ -22,6 +22,8 @@
#include "internal-ascon.h" #include "internal-ascon.h"
#if !defined(__AVR__)
void ascon_permute(ascon_state_t *state, uint8_t first_round) void ascon_permute(ascon_state_t *state, uint8_t first_round)
{ {
uint64_t t0, t1, t2, t3, t4; uint64_t t0, t1, t2, t3, t4;
...@@ -74,3 +76,5 @@ void ascon_permute(ascon_state_t *state, uint8_t first_round) ...@@ -74,3 +76,5 @@ void ascon_permute(ascon_state_t *state, uint8_t first_round)
state->S[4] = x4; state->S[4] = x4;
#endif #endif
} }
#endif /* !__AVR__ */
...@@ -238,6 +238,17 @@ ...@@ -238,6 +238,17 @@
} \ } \
} while (0) } while (0)
/* Rotation functions need to be optimised for best performance on AVR.
* The most efficient rotations are where the number of bits is 1 or a
* multiple of 8, so we compose the efficient rotations to produce all
* other rotation counts of interest. */
#if defined(__AVR__)
#define LW_CRYPTO_ROTATE32_COMPOSED 1
#else
#define LW_CRYPTO_ROTATE32_COMPOSED 0
#endif
/* Rotation macros for 32-bit arguments */ /* Rotation macros for 32-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
...@@ -254,6 +265,8 @@ ...@@ -254,6 +265,8 @@
(_temp >> (bits)) | (_temp << (32 - (bits))); \ (_temp >> (bits)) | (_temp << (32 - (bits))); \
})) }))
#if !LW_CRYPTO_ROTATE32_COMPOSED
/* Left rotate by a specific number of bits. These macros may be replaced /* Left rotate by a specific number of bits. These macros may be replaced
* with more efficient ones on platforms that lack a barrel shifter */ * with more efficient ones on platforms that lack a barrel shifter */
#define leftRotate1(a) (leftRotate((a), 1)) #define leftRotate1(a) (leftRotate((a), 1))
...@@ -322,6 +335,138 @@ ...@@ -322,6 +335,138 @@
#define rightRotate30(a) (rightRotate((a), 30)) #define rightRotate30(a) (rightRotate((a), 30))
#define rightRotate31(a) (rightRotate((a), 31)) #define rightRotate31(a) (rightRotate((a), 31))
#else /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Composed rotation macros where 1 and 8 are fast, but others are slow */
/* Left rotate by 1 */
#define leftRotate1(a) (leftRotate((a), 1))
/* Left rotate by 2 */
#define leftRotate2(a) (leftRotate(leftRotate((a), 1), 1))
/* Left rotate by 3 */
#define leftRotate3(a) (leftRotate(leftRotate(leftRotate((a), 1), 1), 1))
/* Left rotate by 4 */
#define leftRotate4(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 1), 1), 1), 1))
/* Left rotate by 5: Rotate left by 8, then right by 3 */
#define leftRotate5(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 6: Rotate left by 8, then right by 2 */
#define leftRotate6(a) (rightRotate(rightRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 7: Rotate left by 8, then right by 1 */
#define leftRotate7(a) (rightRotate(leftRotate((a), 8), 1))
/* Left rotate by 8 */
#define leftRotate8(a) (leftRotate((a), 8))
/* Left rotate by 9: Rotate left by 8, then left by 1 */
#define leftRotate9(a) (leftRotate(leftRotate((a), 8), 1))
/* Left rotate by 10: Rotate left by 8, then left by 2 */
#define leftRotate10(a) (leftRotate(leftRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 11: Rotate left by 8, then left by 3 */
#define leftRotate11(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 12: Rotate left by 16, then right by 4 */
#define leftRotate12(a) (rightRotate(rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 13: Rotate left by 16, then right by 3 */
#define leftRotate13(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 14: Rotate left by 16, then right by 2 */
#define leftRotate14(a) (rightRotate(rightRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 15: Rotate left by 16, then right by 1 */
#define leftRotate15(a) (rightRotate(leftRotate((a), 16), 1))
/* Left rotate by 16 */
#define leftRotate16(a) (leftRotate((a), 16))
/* Left rotate by 17: Rotate left by 16, then left by 1 */
#define leftRotate17(a) (leftRotate(leftRotate((a), 16), 1))
/* Left rotate by 18: Rotate left by 16, then left by 2 */
#define leftRotate18(a) (leftRotate(leftRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 19: Rotate left by 16, then left by 3 */
#define leftRotate19(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 20: Rotate left by 16, then left by 4 */
#define leftRotate20(a) (leftRotate(leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 21: Rotate left by 24, then right by 3 */
#define leftRotate21(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 22: Rotate left by 24, then right by 2 */
#define leftRotate22(a) (rightRotate(rightRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 23: Rotate left by 24, then right by 1 */
#define leftRotate23(a) (rightRotate(leftRotate((a), 24), 1))
/* Left rotate by 24 */
#define leftRotate24(a) (leftRotate((a), 24))
/* Left rotate by 25: Rotate left by 24, then left by 1 */
#define leftRotate25(a) (leftRotate(leftRotate((a), 24), 1))
/* Left rotate by 26: Rotate left by 24, then left by 2 */
#define leftRotate26(a) (leftRotate(leftRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 27: Rotate left by 24, then left by 3 */
#define leftRotate27(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 28: Rotate right by 4 */
#define leftRotate28(a) (rightRotate(rightRotate(rightRotate(rightRotate((a), 1), 1), 1), 1))
/* Left rotate by 29: Rotate right by 3 */
#define leftRotate29(a) (rightRotate(rightRotate(rightRotate((a), 1), 1), 1))
/* Left rotate by 30: Rotate right by 2 */
#define leftRotate30(a) (rightRotate(rightRotate((a), 1), 1))
/* Left rotate by 31: Rotate right by 1 */
#define leftRotate31(a) (rightRotate((a), 1))
/* Define the 32-bit right rotations in terms of left rotations */
#define rightRotate1(a) (leftRotate31((a)))
#define rightRotate2(a) (leftRotate30((a)))
#define rightRotate3(a) (leftRotate29((a)))
#define rightRotate4(a) (leftRotate28((a)))
#define rightRotate5(a) (leftRotate27((a)))
#define rightRotate6(a) (leftRotate26((a)))
#define rightRotate7(a) (leftRotate25((a)))
#define rightRotate8(a) (leftRotate24((a)))
#define rightRotate9(a) (leftRotate23((a)))
#define rightRotate10(a) (leftRotate22((a)))
#define rightRotate11(a) (leftRotate21((a)))
#define rightRotate12(a) (leftRotate20((a)))
#define rightRotate13(a) (leftRotate19((a)))
#define rightRotate14(a) (leftRotate18((a)))
#define rightRotate15(a) (leftRotate17((a)))
#define rightRotate16(a) (leftRotate16((a)))
#define rightRotate17(a) (leftRotate15((a)))
#define rightRotate18(a) (leftRotate14((a)))
#define rightRotate19(a) (leftRotate13((a)))
#define rightRotate20(a) (leftRotate12((a)))
#define rightRotate21(a) (leftRotate11((a)))
#define rightRotate22(a) (leftRotate10((a)))
#define rightRotate23(a) (leftRotate9((a)))
#define rightRotate24(a) (leftRotate8((a)))
#define rightRotate25(a) (leftRotate7((a)))
#define rightRotate26(a) (leftRotate6((a)))
#define rightRotate27(a) (leftRotate5((a)))
#define rightRotate28(a) (leftRotate4((a)))
#define rightRotate29(a) (leftRotate3((a)))
#define rightRotate30(a) (leftRotate2((a)))
#define rightRotate31(a) (leftRotate1((a)))
#endif /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Rotation macros for 64-bit arguments */ /* Rotation macros for 64-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
......
...@@ -22,6 +22,8 @@ ...@@ -22,6 +22,8 @@
#include "internal-ascon.h" #include "internal-ascon.h"
#if !defined(__AVR__)
void ascon_permute(ascon_state_t *state, uint8_t first_round) void ascon_permute(ascon_state_t *state, uint8_t first_round)
{ {
uint64_t t0, t1, t2, t3, t4; uint64_t t0, t1, t2, t3, t4;
...@@ -74,3 +76,5 @@ void ascon_permute(ascon_state_t *state, uint8_t first_round) ...@@ -74,3 +76,5 @@ void ascon_permute(ascon_state_t *state, uint8_t first_round)
state->S[4] = x4; state->S[4] = x4;
#endif #endif
} }
#endif /* !__AVR__ */
...@@ -238,6 +238,17 @@ ...@@ -238,6 +238,17 @@
} \ } \
} while (0) } while (0)
/* Rotation functions need to be optimised for best performance on AVR.
* The most efficient rotations are where the number of bits is 1 or a
* multiple of 8, so we compose the efficient rotations to produce all
* other rotation counts of interest. */
#if defined(__AVR__)
#define LW_CRYPTO_ROTATE32_COMPOSED 1
#else
#define LW_CRYPTO_ROTATE32_COMPOSED 0
#endif
/* Rotation macros for 32-bit arguments */ /* Rotation macros for 32-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
...@@ -254,6 +265,8 @@ ...@@ -254,6 +265,8 @@
(_temp >> (bits)) | (_temp << (32 - (bits))); \ (_temp >> (bits)) | (_temp << (32 - (bits))); \
})) }))
#if !LW_CRYPTO_ROTATE32_COMPOSED
/* Left rotate by a specific number of bits. These macros may be replaced /* Left rotate by a specific number of bits. These macros may be replaced
* with more efficient ones on platforms that lack a barrel shifter */ * with more efficient ones on platforms that lack a barrel shifter */
#define leftRotate1(a) (leftRotate((a), 1)) #define leftRotate1(a) (leftRotate((a), 1))
...@@ -322,6 +335,138 @@ ...@@ -322,6 +335,138 @@
#define rightRotate30(a) (rightRotate((a), 30)) #define rightRotate30(a) (rightRotate((a), 30))
#define rightRotate31(a) (rightRotate((a), 31)) #define rightRotate31(a) (rightRotate((a), 31))
#else /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Composed rotation macros where 1 and 8 are fast, but others are slow */
/* Left rotate by 1 */
#define leftRotate1(a) (leftRotate((a), 1))
/* Left rotate by 2 */
#define leftRotate2(a) (leftRotate(leftRotate((a), 1), 1))
/* Left rotate by 3 */
#define leftRotate3(a) (leftRotate(leftRotate(leftRotate((a), 1), 1), 1))
/* Left rotate by 4 */
#define leftRotate4(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 1), 1), 1), 1))
/* Left rotate by 5: Rotate left by 8, then right by 3 */
#define leftRotate5(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 6: Rotate left by 8, then right by 2 */
#define leftRotate6(a) (rightRotate(rightRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 7: Rotate left by 8, then right by 1 */
#define leftRotate7(a) (rightRotate(leftRotate((a), 8), 1))
/* Left rotate by 8 */
#define leftRotate8(a) (leftRotate((a), 8))
/* Left rotate by 9: Rotate left by 8, then left by 1 */
#define leftRotate9(a) (leftRotate(leftRotate((a), 8), 1))
/* Left rotate by 10: Rotate left by 8, then left by 2 */
#define leftRotate10(a) (leftRotate(leftRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 11: Rotate left by 8, then left by 3 */
#define leftRotate11(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 12: Rotate left by 16, then right by 4 */
#define leftRotate12(a) (rightRotate(rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 13: Rotate left by 16, then right by 3 */
#define leftRotate13(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 14: Rotate left by 16, then right by 2 */
#define leftRotate14(a) (rightRotate(rightRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 15: Rotate left by 16, then right by 1 */
#define leftRotate15(a) (rightRotate(leftRotate((a), 16), 1))
/* Left rotate by 16 */
#define leftRotate16(a) (leftRotate((a), 16))
/* Left rotate by 17: Rotate left by 16, then left by 1 */
#define leftRotate17(a) (leftRotate(leftRotate((a), 16), 1))
/* Left rotate by 18: Rotate left by 16, then left by 2 */
#define leftRotate18(a) (leftRotate(leftRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 19: Rotate left by 16, then left by 3 */
#define leftRotate19(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 20: Rotate left by 16, then left by 4 */
#define leftRotate20(a) (leftRotate(leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 21: Rotate left by 24, then right by 3 */
#define leftRotate21(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 22: Rotate left by 24, then right by 2 */
#define leftRotate22(a) (rightRotate(rightRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 23: Rotate left by 24, then right by 1 */
#define leftRotate23(a) (rightRotate(leftRotate((a), 24), 1))
/* Left rotate by 24 */
#define leftRotate24(a) (leftRotate((a), 24))
/* Left rotate by 25: Rotate left by 24, then left by 1 */
#define leftRotate25(a) (leftRotate(leftRotate((a), 24), 1))
/* Left rotate by 26: Rotate left by 24, then left by 2 */
#define leftRotate26(a) (leftRotate(leftRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 27: Rotate left by 24, then left by 3 */
#define leftRotate27(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 28: Rotate right by 4 */
#define leftRotate28(a) (rightRotate(rightRotate(rightRotate(rightRotate((a), 1), 1), 1), 1))
/* Left rotate by 29: Rotate right by 3 */
#define leftRotate29(a) (rightRotate(rightRotate(rightRotate((a), 1), 1), 1))
/* Left rotate by 30: Rotate right by 2 */
#define leftRotate30(a) (rightRotate(rightRotate((a), 1), 1))
/* Left rotate by 31: Rotate right by 1 */
#define leftRotate31(a) (rightRotate((a), 1))
/* Define the 32-bit right rotations in terms of left rotations */
#define rightRotate1(a) (leftRotate31((a)))
#define rightRotate2(a) (leftRotate30((a)))
#define rightRotate3(a) (leftRotate29((a)))
#define rightRotate4(a) (leftRotate28((a)))
#define rightRotate5(a) (leftRotate27((a)))
#define rightRotate6(a) (leftRotate26((a)))
#define rightRotate7(a) (leftRotate25((a)))
#define rightRotate8(a) (leftRotate24((a)))
#define rightRotate9(a) (leftRotate23((a)))
#define rightRotate10(a) (leftRotate22((a)))
#define rightRotate11(a) (leftRotate21((a)))
#define rightRotate12(a) (leftRotate20((a)))
#define rightRotate13(a) (leftRotate19((a)))
#define rightRotate14(a) (leftRotate18((a)))
#define rightRotate15(a) (leftRotate17((a)))
#define rightRotate16(a) (leftRotate16((a)))
#define rightRotate17(a) (leftRotate15((a)))
#define rightRotate18(a) (leftRotate14((a)))
#define rightRotate19(a) (leftRotate13((a)))
#define rightRotate20(a) (leftRotate12((a)))
#define rightRotate21(a) (leftRotate11((a)))
#define rightRotate22(a) (leftRotate10((a)))
#define rightRotate23(a) (leftRotate9((a)))
#define rightRotate24(a) (leftRotate8((a)))
#define rightRotate25(a) (leftRotate7((a)))
#define rightRotate26(a) (leftRotate6((a)))
#define rightRotate27(a) (leftRotate5((a)))
#define rightRotate28(a) (leftRotate4((a)))
#define rightRotate29(a) (leftRotate3((a)))
#define rightRotate30(a) (leftRotate2((a)))
#define rightRotate31(a) (leftRotate1((a)))
#endif /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Rotation macros for 64-bit arguments */ /* Rotation macros for 64-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
......
#define CRYPTO_KEYBYTES 20
#define CRYPTO_NSECBYTES 0
#define CRYPTO_NPUBBYTES 16
#define CRYPTO_ABYTES 16
#define CRYPTO_NOOVERLAP 1
#include "ascon128.h"
int crypto_aead_encrypt
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k)
{
return ascon80pq_aead_encrypt
(c, clen, m, mlen, ad, adlen, nsec, npub, k);
}
int crypto_aead_decrypt
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k)
{
return ascon80pq_aead_decrypt
(m, mlen, nsec, c, clen, ad, adlen, npub, k);
}
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "internal-ascon.h"
#if !defined(__AVR__)
void ascon_permute(ascon_state_t *state, uint8_t first_round)
{
uint64_t t0, t1, t2, t3, t4;
#if defined(LW_UTIL_LITTLE_ENDIAN)
uint64_t x0 = be_load_word64(state->B);
uint64_t x1 = be_load_word64(state->B + 8);
uint64_t x2 = be_load_word64(state->B + 16);
uint64_t x3 = be_load_word64(state->B + 24);
uint64_t x4 = be_load_word64(state->B + 32);
#else
uint64_t x0 = state->S[0];
uint64_t x1 = state->S[1];
uint64_t x2 = state->S[2];
uint64_t x3 = state->S[3];
uint64_t x4 = state->S[4];
#endif
while (first_round < 12) {
/* Add the round constant to the state */
x2 ^= ((0x0F - first_round) << 4) | first_round;
/* Substitution layer - apply the s-box using bit-slicing
* according to the algorithm recommended in the specification */
x0 ^= x4; x4 ^= x3; x2 ^= x1;
t0 = ~x0; t1 = ~x1; t2 = ~x2; t3 = ~x3; t4 = ~x4;
t0 &= x1; t1 &= x2; t2 &= x3; t3 &= x4; t4 &= x0;
x0 ^= t1; x1 ^= t2; x2 ^= t3; x3 ^= t4; x4 ^= t0;
x1 ^= x0; x0 ^= x4; x3 ^= x2; x2 = ~x2;
/* Linear diffusion layer */
x0 ^= rightRotate19_64(x0) ^ rightRotate28_64(x0);
x1 ^= rightRotate61_64(x1) ^ rightRotate39_64(x1);
x2 ^= rightRotate1_64(x2) ^ rightRotate6_64(x2);
x3 ^= rightRotate10_64(x3) ^ rightRotate17_64(x3);
x4 ^= rightRotate7_64(x4) ^ rightRotate41_64(x4);
/* Move onto the next round */
++first_round;
}
#if defined(LW_UTIL_LITTLE_ENDIAN)
be_store_word64(state->B, x0);
be_store_word64(state->B + 8, x1);
be_store_word64(state->B + 16, x2);
be_store_word64(state->B + 24, x3);
be_store_word64(state->B + 32, x4);
#else
state->S[0] = x0;
state->S[1] = x1;
state->S[2] = x2;
state->S[3] = x3;
state->S[4] = x4;
#endif
}
#endif /* !__AVR__ */
...@@ -22,6 +22,8 @@ ...@@ -22,6 +22,8 @@
#include "internal-ascon.h" #include "internal-ascon.h"
#if !defined(__AVR__)
void ascon_permute(ascon_state_t *state, uint8_t first_round) void ascon_permute(ascon_state_t *state, uint8_t first_round)
{ {
uint64_t t0, t1, t2, t3, t4; uint64_t t0, t1, t2, t3, t4;
...@@ -74,3 +76,5 @@ void ascon_permute(ascon_state_t *state, uint8_t first_round) ...@@ -74,3 +76,5 @@ void ascon_permute(ascon_state_t *state, uint8_t first_round)
state->S[4] = x4; state->S[4] = x4;
#endif #endif
} }
#endif /* !__AVR__ */
...@@ -238,6 +238,17 @@ ...@@ -238,6 +238,17 @@
} \ } \
} while (0) } while (0)
/* Rotation functions need to be optimised for best performance on AVR.
* The most efficient rotations are where the number of bits is 1 or a
* multiple of 8, so we compose the efficient rotations to produce all
* other rotation counts of interest. */
#if defined(__AVR__)
#define LW_CRYPTO_ROTATE32_COMPOSED 1
#else
#define LW_CRYPTO_ROTATE32_COMPOSED 0
#endif
/* Rotation macros for 32-bit arguments */ /* Rotation macros for 32-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
...@@ -254,6 +265,8 @@ ...@@ -254,6 +265,8 @@
(_temp >> (bits)) | (_temp << (32 - (bits))); \ (_temp >> (bits)) | (_temp << (32 - (bits))); \
})) }))
#if !LW_CRYPTO_ROTATE32_COMPOSED
/* Left rotate by a specific number of bits. These macros may be replaced /* Left rotate by a specific number of bits. These macros may be replaced
* with more efficient ones on platforms that lack a barrel shifter */ * with more efficient ones on platforms that lack a barrel shifter */
#define leftRotate1(a) (leftRotate((a), 1)) #define leftRotate1(a) (leftRotate((a), 1))
...@@ -322,6 +335,138 @@ ...@@ -322,6 +335,138 @@
#define rightRotate30(a) (rightRotate((a), 30)) #define rightRotate30(a) (rightRotate((a), 30))
#define rightRotate31(a) (rightRotate((a), 31)) #define rightRotate31(a) (rightRotate((a), 31))
#else /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Composed rotation macros where 1 and 8 are fast, but others are slow */
/* Left rotate by 1 */
#define leftRotate1(a) (leftRotate((a), 1))
/* Left rotate by 2 */
#define leftRotate2(a) (leftRotate(leftRotate((a), 1), 1))
/* Left rotate by 3 */
#define leftRotate3(a) (leftRotate(leftRotate(leftRotate((a), 1), 1), 1))
/* Left rotate by 4 */
#define leftRotate4(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 1), 1), 1), 1))
/* Left rotate by 5: Rotate left by 8, then right by 3 */
#define leftRotate5(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 6: Rotate left by 8, then right by 2 */
#define leftRotate6(a) (rightRotate(rightRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 7: Rotate left by 8, then right by 1 */
#define leftRotate7(a) (rightRotate(leftRotate((a), 8), 1))
/* Left rotate by 8 */
#define leftRotate8(a) (leftRotate((a), 8))
/* Left rotate by 9: Rotate left by 8, then left by 1 */
#define leftRotate9(a) (leftRotate(leftRotate((a), 8), 1))
/* Left rotate by 10: Rotate left by 8, then left by 2 */
#define leftRotate10(a) (leftRotate(leftRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 11: Rotate left by 8, then left by 3 */
#define leftRotate11(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 12: Rotate left by 16, then right by 4 */
#define leftRotate12(a) (rightRotate(rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 13: Rotate left by 16, then right by 3 */
#define leftRotate13(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 14: Rotate left by 16, then right by 2 */
#define leftRotate14(a) (rightRotate(rightRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 15: Rotate left by 16, then right by 1 */
#define leftRotate15(a) (rightRotate(leftRotate((a), 16), 1))
/* Left rotate by 16 */
#define leftRotate16(a) (leftRotate((a), 16))
/* Left rotate by 17: Rotate left by 16, then left by 1 */
#define leftRotate17(a) (leftRotate(leftRotate((a), 16), 1))
/* Left rotate by 18: Rotate left by 16, then left by 2 */
#define leftRotate18(a) (leftRotate(leftRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 19: Rotate left by 16, then left by 3 */
#define leftRotate19(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 20: Rotate left by 16, then left by 4 */
#define leftRotate20(a) (leftRotate(leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 21: Rotate left by 24, then right by 3 */
#define leftRotate21(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 22: Rotate left by 24, then right by 2 */
#define leftRotate22(a) (rightRotate(rightRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 23: Rotate left by 24, then right by 1 */
#define leftRotate23(a) (rightRotate(leftRotate((a), 24), 1))
/* Left rotate by 24 */
#define leftRotate24(a) (leftRotate((a), 24))
/* Left rotate by 25: Rotate left by 24, then left by 1 */
#define leftRotate25(a) (leftRotate(leftRotate((a), 24), 1))
/* Left rotate by 26: Rotate left by 24, then left by 2 */
#define leftRotate26(a) (leftRotate(leftRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 27: Rotate left by 24, then left by 3 */
#define leftRotate27(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 28: Rotate right by 4 */
#define leftRotate28(a) (rightRotate(rightRotate(rightRotate(rightRotate((a), 1), 1), 1), 1))
/* Left rotate by 29: Rotate right by 3 */
#define leftRotate29(a) (rightRotate(rightRotate(rightRotate((a), 1), 1), 1))
/* Left rotate by 30: Rotate right by 2 */
#define leftRotate30(a) (rightRotate(rightRotate((a), 1), 1))
/* Left rotate by 31: Rotate right by 1 */
#define leftRotate31(a) (rightRotate((a), 1))
/* Define the 32-bit right rotations in terms of left rotations */
#define rightRotate1(a) (leftRotate31((a)))
#define rightRotate2(a) (leftRotate30((a)))
#define rightRotate3(a) (leftRotate29((a)))
#define rightRotate4(a) (leftRotate28((a)))
#define rightRotate5(a) (leftRotate27((a)))
#define rightRotate6(a) (leftRotate26((a)))
#define rightRotate7(a) (leftRotate25((a)))
#define rightRotate8(a) (leftRotate24((a)))
#define rightRotate9(a) (leftRotate23((a)))
#define rightRotate10(a) (leftRotate22((a)))
#define rightRotate11(a) (leftRotate21((a)))
#define rightRotate12(a) (leftRotate20((a)))
#define rightRotate13(a) (leftRotate19((a)))
#define rightRotate14(a) (leftRotate18((a)))
#define rightRotate15(a) (leftRotate17((a)))
#define rightRotate16(a) (leftRotate16((a)))
#define rightRotate17(a) (leftRotate15((a)))
#define rightRotate18(a) (leftRotate14((a)))
#define rightRotate19(a) (leftRotate13((a)))
#define rightRotate20(a) (leftRotate12((a)))
#define rightRotate21(a) (leftRotate11((a)))
#define rightRotate22(a) (leftRotate10((a)))
#define rightRotate23(a) (leftRotate9((a)))
#define rightRotate24(a) (leftRotate8((a)))
#define rightRotate25(a) (leftRotate7((a)))
#define rightRotate26(a) (leftRotate6((a)))
#define rightRotate27(a) (leftRotate5((a)))
#define rightRotate28(a) (leftRotate4((a)))
#define rightRotate29(a) (leftRotate3((a)))
#define rightRotate30(a) (leftRotate2((a)))
#define rightRotate31(a) (leftRotate1((a)))
#endif /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Rotation macros for 64-bit arguments */ /* Rotation macros for 64-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
......
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "internal-ascon.h"
#if !defined(__AVR__)
void ascon_permute(ascon_state_t *state, uint8_t first_round)
{
uint64_t t0, t1, t2, t3, t4;
#if defined(LW_UTIL_LITTLE_ENDIAN)
uint64_t x0 = be_load_word64(state->B);
uint64_t x1 = be_load_word64(state->B + 8);
uint64_t x2 = be_load_word64(state->B + 16);
uint64_t x3 = be_load_word64(state->B + 24);
uint64_t x4 = be_load_word64(state->B + 32);
#else
uint64_t x0 = state->S[0];
uint64_t x1 = state->S[1];
uint64_t x2 = state->S[2];
uint64_t x3 = state->S[3];
uint64_t x4 = state->S[4];
#endif
while (first_round < 12) {
/* Add the round constant to the state */
x2 ^= ((0x0F - first_round) << 4) | first_round;
/* Substitution layer - apply the s-box using bit-slicing
* according to the algorithm recommended in the specification */
x0 ^= x4; x4 ^= x3; x2 ^= x1;
t0 = ~x0; t1 = ~x1; t2 = ~x2; t3 = ~x3; t4 = ~x4;
t0 &= x1; t1 &= x2; t2 &= x3; t3 &= x4; t4 &= x0;
x0 ^= t1; x1 ^= t2; x2 ^= t3; x3 ^= t4; x4 ^= t0;
x1 ^= x0; x0 ^= x4; x3 ^= x2; x2 = ~x2;
/* Linear diffusion layer */
x0 ^= rightRotate19_64(x0) ^ rightRotate28_64(x0);
x1 ^= rightRotate61_64(x1) ^ rightRotate39_64(x1);
x2 ^= rightRotate1_64(x2) ^ rightRotate6_64(x2);
x3 ^= rightRotate10_64(x3) ^ rightRotate17_64(x3);
x4 ^= rightRotate7_64(x4) ^ rightRotate41_64(x4);
/* Move onto the next round */
++first_round;
}
#if defined(LW_UTIL_LITTLE_ENDIAN)
be_store_word64(state->B, x0);
be_store_word64(state->B + 8, x1);
be_store_word64(state->B + 16, x2);
be_store_word64(state->B + 24, x3);
be_store_word64(state->B + 32, x4);
#else
state->S[0] = x0;
state->S[1] = x1;
state->S[2] = x2;
state->S[3] = x3;
state->S[4] = x4;
#endif
}
#endif /* !__AVR__ */
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "internal-ascon.h"
#if !defined(__AVR__)
void ascon_permute(ascon_state_t *state, uint8_t first_round)
{
uint64_t t0, t1, t2, t3, t4;
#if defined(LW_UTIL_LITTLE_ENDIAN)
uint64_t x0 = be_load_word64(state->B);
uint64_t x1 = be_load_word64(state->B + 8);
uint64_t x2 = be_load_word64(state->B + 16);
uint64_t x3 = be_load_word64(state->B + 24);
uint64_t x4 = be_load_word64(state->B + 32);
#else
uint64_t x0 = state->S[0];
uint64_t x1 = state->S[1];
uint64_t x2 = state->S[2];
uint64_t x3 = state->S[3];
uint64_t x4 = state->S[4];
#endif
while (first_round < 12) {
/* Add the round constant to the state */
x2 ^= ((0x0F - first_round) << 4) | first_round;
/* Substitution layer - apply the s-box using bit-slicing
* according to the algorithm recommended in the specification */
x0 ^= x4; x4 ^= x3; x2 ^= x1;
t0 = ~x0; t1 = ~x1; t2 = ~x2; t3 = ~x3; t4 = ~x4;
t0 &= x1; t1 &= x2; t2 &= x3; t3 &= x4; t4 &= x0;
x0 ^= t1; x1 ^= t2; x2 ^= t3; x3 ^= t4; x4 ^= t0;
x1 ^= x0; x0 ^= x4; x3 ^= x2; x2 = ~x2;
/* Linear diffusion layer */
x0 ^= rightRotate19_64(x0) ^ rightRotate28_64(x0);
x1 ^= rightRotate61_64(x1) ^ rightRotate39_64(x1);
x2 ^= rightRotate1_64(x2) ^ rightRotate6_64(x2);
x3 ^= rightRotate10_64(x3) ^ rightRotate17_64(x3);
x4 ^= rightRotate7_64(x4) ^ rightRotate41_64(x4);
/* Move onto the next round */
++first_round;
}
#if defined(LW_UTIL_LITTLE_ENDIAN)
be_store_word64(state->B, x0);
be_store_word64(state->B + 8, x1);
be_store_word64(state->B + 16, x2);
be_store_word64(state->B + 24, x3);
be_store_word64(state->B + 32, x4);
#else
state->S[0] = x0;
state->S[1] = x1;
state->S[2] = x2;
state->S[3] = x3;
state->S[4] = x4;
#endif
}
#endif /* !__AVR__ */
#define CRYPTO_KEYBYTES 16
#define CRYPTO_NSECBYTES 0
#define CRYPTO_NPUBBYTES 16
#define CRYPTO_ABYTES 16
#define CRYPTO_NOOVERLAP 1
#include "comet.h"
int crypto_aead_encrypt
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k)
{
return comet_128_cham_aead_encrypt
(c, clen, m, mlen, ad, adlen, nsec, npub, k);
}
int crypto_aead_decrypt
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k)
{
return comet_128_cham_aead_decrypt
(m, mlen, nsec, c, clen, ad, adlen, npub, k);
}
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "internal-cham.h"
#include "internal-util.h"
#if !defined(__AVR__)
void cham128_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input)
{
uint32_t x0, x1, x2, x3;
uint32_t k[8];
uint8_t round;
/* Unpack the key and generate the key schedule */
k[0] = le_load_word32(key);
k[1] = le_load_word32(key + 4);
k[2] = le_load_word32(key + 8);
k[3] = le_load_word32(key + 12);
k[4] = k[1] ^ leftRotate1(k[1]) ^ leftRotate11(k[1]);
k[5] = k[0] ^ leftRotate1(k[0]) ^ leftRotate11(k[0]);
k[6] = k[3] ^ leftRotate1(k[3]) ^ leftRotate11(k[3]);
k[7] = k[2] ^ leftRotate1(k[2]) ^ leftRotate11(k[2]);
k[0] ^= leftRotate1(k[0]) ^ leftRotate8(k[0]);
k[1] ^= leftRotate1(k[1]) ^ leftRotate8(k[1]);
k[2] ^= leftRotate1(k[2]) ^ leftRotate8(k[2]);
k[3] ^= leftRotate1(k[3]) ^ leftRotate8(k[3]);
/* Unpack the input block */
x0 = le_load_word32(input);
x1 = le_load_word32(input + 4);
x2 = le_load_word32(input + 8);
x3 = le_load_word32(input + 12);
/* Perform the 80 rounds eight at a time */
for (round = 0; round < 80; round += 8) {
x0 = leftRotate8((x0 ^ round) + (leftRotate1(x1) ^ k[0]));
x1 = leftRotate1((x1 ^ (round + 1)) + (leftRotate8(x2) ^ k[1]));
x2 = leftRotate8((x2 ^ (round + 2)) + (leftRotate1(x3) ^ k[2]));
x3 = leftRotate1((x3 ^ (round + 3)) + (leftRotate8(x0) ^ k[3]));
x0 = leftRotate8((x0 ^ (round + 4)) + (leftRotate1(x1) ^ k[4]));
x1 = leftRotate1((x1 ^ (round + 5)) + (leftRotate8(x2) ^ k[5]));
x2 = leftRotate8((x2 ^ (round + 6)) + (leftRotate1(x3) ^ k[6]));
x3 = leftRotate1((x3 ^ (round + 7)) + (leftRotate8(x0) ^ k[7]));
}
/* Pack the state into the output block */
le_store_word32(output, x0);
le_store_word32(output + 4, x1);
le_store_word32(output + 8, x2);
le_store_word32(output + 12, x3);
}
void cham64_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input)
{
uint16_t x0, x1, x2, x3;
uint16_t k[16];
uint8_t round;
/* Unpack the key and generate the key schedule */
k[0] = le_load_word16(key);
k[1] = le_load_word16(key + 2);
k[2] = le_load_word16(key + 4);
k[3] = le_load_word16(key + 6);
k[4] = le_load_word16(key + 8);
k[5] = le_load_word16(key + 10);
k[6] = le_load_word16(key + 12);
k[7] = le_load_word16(key + 14);
k[8] = k[1] ^ leftRotate1_16(k[1]) ^ leftRotate11_16(k[1]);
k[9] = k[0] ^ leftRotate1_16(k[0]) ^ leftRotate11_16(k[0]);
k[10] = k[3] ^ leftRotate1_16(k[3]) ^ leftRotate11_16(k[3]);
k[11] = k[2] ^ leftRotate1_16(k[2]) ^ leftRotate11_16(k[2]);
k[12] = k[5] ^ leftRotate1_16(k[5]) ^ leftRotate11_16(k[5]);
k[13] = k[4] ^ leftRotate1_16(k[4]) ^ leftRotate11_16(k[4]);
k[14] = k[7] ^ leftRotate1_16(k[7]) ^ leftRotate11_16(k[7]);
k[15] = k[6] ^ leftRotate1_16(k[6]) ^ leftRotate11_16(k[6]);
k[0] ^= leftRotate1_16(k[0]) ^ leftRotate8_16(k[0]);
k[1] ^= leftRotate1_16(k[1]) ^ leftRotate8_16(k[1]);
k[2] ^= leftRotate1_16(k[2]) ^ leftRotate8_16(k[2]);
k[3] ^= leftRotate1_16(k[3]) ^ leftRotate8_16(k[3]);
k[4] ^= leftRotate1_16(k[4]) ^ leftRotate8_16(k[4]);
k[5] ^= leftRotate1_16(k[5]) ^ leftRotate8_16(k[5]);
k[6] ^= leftRotate1_16(k[6]) ^ leftRotate8_16(k[6]);
k[7] ^= leftRotate1_16(k[7]) ^ leftRotate8_16(k[7]);
/* Unpack the input block */
x0 = le_load_word16(input);
x1 = le_load_word16(input + 2);
x2 = le_load_word16(input + 4);
x3 = le_load_word16(input + 6);
/* Perform the 80 rounds four at a time */
for (round = 0; round < 80; round += 4) {
x0 = leftRotate8_16
((x0 ^ round) +
(leftRotate1_16(x1) ^ k[round % 16]));
x1 = leftRotate1_16
((x1 ^ (round + 1)) +
(leftRotate8_16(x2) ^ k[(round + 1) % 16]));
x2 = leftRotate8_16
((x2 ^ (round + 2)) +
(leftRotate1_16(x3) ^ k[(round + 2) % 16]));
x3 = leftRotate1_16
((x3 ^ (round + 3)) +
(leftRotate8_16(x0) ^ k[(round + 3) % 16]));
}
/* Pack the state into the output block */
le_store_word16(output, x0);
le_store_word16(output + 2, x1);
le_store_word16(output + 4, x2);
le_store_word16(output + 6, x3);
}
#endif
...@@ -22,6 +22,7 @@ ...@@ -22,6 +22,7 @@
#include "comet.h" #include "comet.h"
#include "internal-cham.h" #include "internal-cham.h"
#include "internal-speck64.h"
#include "internal-util.h" #include "internal-util.h"
#include <string.h> #include <string.h>
...@@ -478,58 +479,6 @@ int comet_64_cham_aead_decrypt ...@@ -478,58 +479,6 @@ int comet_64_cham_aead_decrypt
return aead_check_tag(m, *mlen, Y, c + *mlen, COMET_64_TAG_SIZE); return aead_check_tag(m, *mlen, Y, c + *mlen, COMET_64_TAG_SIZE);
} }
/**
* \brief Encrypts a 64-bit block with SPECK-64-128 in COMET byte order.
*
* \param key Points to the 16 bytes of the key.
* \param output Output buffer which must be at least 8 bytes in length.
* \param input Input buffer which must be at least 8 bytes in length.
*
* The \a input and \a output buffers can be the same buffer for
* in-place encryption.
*
* \note This version differs from standard SPECK-64 in that it uses the
* little-endian byte order from the COMET specification which is different
* from the big-endian byte order from the original SPECK paper.
*/
static void speck64_128_comet_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input)
{
uint32_t l[4];
uint32_t x, y, s;
uint8_t round;
uint8_t li_in = 0;
uint8_t li_out = 3;
/* Unpack the key and the input block */
s = le_load_word32(key);
l[0] = le_load_word32(key + 4);
l[1] = le_load_word32(key + 8);
l[2] = le_load_word32(key + 12);
y = le_load_word32(input);
x = le_load_word32(input + 4);
/* Perform all encryption rounds except the last */
for (round = 0; round < 26; ++round) {
/* Perform the round with the current key schedule word */
x = (rightRotate8(x) + y) ^ s;
y = leftRotate3(y) ^ x;
/* Calculate the next key schedule word */
l[li_out] = (s + rightRotate8(l[li_in])) ^ round;
s = leftRotate3(s) ^ l[li_out];
li_in = (li_in + 1) & 0x03;
li_out = (li_out + 1) & 0x03;
}
/* Perform the last encryption round and write the result to the output */
x = (rightRotate8(x) + y) ^ s;
y = leftRotate3(y) ^ x;
le_store_word32(output, y);
le_store_word32(output + 4, x);
}
int comet_64_speck_aead_encrypt int comet_64_speck_aead_encrypt
(unsigned char *c, unsigned long long *clen, (unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen, const unsigned char *m, unsigned long long mlen,
...@@ -547,23 +496,23 @@ int comet_64_speck_aead_encrypt ...@@ -547,23 +496,23 @@ int comet_64_speck_aead_encrypt
/* Set up the initial state of Y and Z */ /* Set up the initial state of Y and Z */
memset(Y, 0, 8); memset(Y, 0, 8);
speck64_128_comet_encrypt(k, Y, Y); speck64_128_encrypt(k, Y, Y);
memcpy(Z, npub, 15); memcpy(Z, npub, 15);
Z[15] = 0; Z[15] = 0;
lw_xor_block(Z, k, 16); lw_xor_block(Z, k, 16);
/* Process the associated data */ /* Process the associated data */
if (adlen > 0) if (adlen > 0)
comet_process_ad(Y, Z, 8, speck64_128_comet_encrypt, ad, adlen); comet_process_ad(Y, Z, 8, speck64_128_encrypt, ad, adlen);
/* Encrypt the plaintext to produce the ciphertext */ /* Encrypt the plaintext to produce the ciphertext */
if (mlen > 0) if (mlen > 0)
comet_encrypt_64(Y, Z, speck64_128_comet_encrypt, c, m, mlen); comet_encrypt_64(Y, Z, speck64_128_encrypt, c, m, mlen);
/* Generate the authentication tag */ /* Generate the authentication tag */
Z[15] ^= 0x80; Z[15] ^= 0x80;
comet_adjust_block_key(Z); comet_adjust_block_key(Z);
speck64_128_comet_encrypt(Z, c + mlen, Y); speck64_128_encrypt(Z, c + mlen, Y);
return 0; return 0;
} }
...@@ -586,22 +535,22 @@ int comet_64_speck_aead_decrypt ...@@ -586,22 +535,22 @@ int comet_64_speck_aead_decrypt
/* Set up the initial state of Y and Z */ /* Set up the initial state of Y and Z */
memset(Y, 0, 8); memset(Y, 0, 8);
speck64_128_comet_encrypt(k, Y, Y); speck64_128_encrypt(k, Y, Y);
memcpy(Z, npub, 15); memcpy(Z, npub, 15);
Z[15] = 0; Z[15] = 0;
lw_xor_block(Z, k, 16); lw_xor_block(Z, k, 16);
/* Process the associated data */ /* Process the associated data */
if (adlen > 0) if (adlen > 0)
comet_process_ad(Y, Z, 8, speck64_128_comet_encrypt, ad, adlen); comet_process_ad(Y, Z, 8, speck64_128_encrypt, ad, adlen);
/* Decrypt the ciphertext to produce the plaintext */ /* Decrypt the ciphertext to produce the plaintext */
if (clen > COMET_64_TAG_SIZE) if (clen > COMET_64_TAG_SIZE)
comet_decrypt_64(Y, Z, speck64_128_comet_encrypt, m, c, *mlen); comet_decrypt_64(Y, Z, speck64_128_encrypt, m, c, *mlen);
/* Check the authentication tag */ /* Check the authentication tag */
Z[15] ^= 0x80; Z[15] ^= 0x80;
comet_adjust_block_key(Z); comet_adjust_block_key(Z);
speck64_128_comet_encrypt(Z, Y, Y); speck64_128_encrypt(Z, Y, Y);
return aead_check_tag(m, *mlen, Y, c + *mlen, COMET_64_TAG_SIZE); return aead_check_tag(m, *mlen, Y, c + *mlen, COMET_64_TAG_SIZE);
} }
...@@ -23,6 +23,8 @@ ...@@ -23,6 +23,8 @@
#include "internal-cham.h" #include "internal-cham.h"
#include "internal-util.h" #include "internal-util.h"
#if !defined(__AVR__)
void cham128_128_encrypt void cham128_128_encrypt
(const unsigned char *key, unsigned char *output, (const unsigned char *key, unsigned char *output,
const unsigned char *input) const unsigned char *input)
...@@ -132,3 +134,5 @@ void cham64_128_encrypt ...@@ -132,3 +134,5 @@ void cham64_128_encrypt
le_store_word16(output + 4, x2); le_store_word16(output + 4, x2);
le_store_word16(output + 6, x3); le_store_word16(output + 6, x3);
} }
#endif
...@@ -238,6 +238,17 @@ ...@@ -238,6 +238,17 @@
} \ } \
} while (0) } while (0)
/* Rotation functions need to be optimised for best performance on AVR.
* The most efficient rotations are where the number of bits is 1 or a
* multiple of 8, so we compose the efficient rotations to produce all
* other rotation counts of interest. */
#if defined(__AVR__)
#define LW_CRYPTO_ROTATE32_COMPOSED 1
#else
#define LW_CRYPTO_ROTATE32_COMPOSED 0
#endif
/* Rotation macros for 32-bit arguments */ /* Rotation macros for 32-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
...@@ -254,6 +265,8 @@ ...@@ -254,6 +265,8 @@
(_temp >> (bits)) | (_temp << (32 - (bits))); \ (_temp >> (bits)) | (_temp << (32 - (bits))); \
})) }))
#if !LW_CRYPTO_ROTATE32_COMPOSED
/* Left rotate by a specific number of bits. These macros may be replaced /* Left rotate by a specific number of bits. These macros may be replaced
* with more efficient ones on platforms that lack a barrel shifter */ * with more efficient ones on platforms that lack a barrel shifter */
#define leftRotate1(a) (leftRotate((a), 1)) #define leftRotate1(a) (leftRotate((a), 1))
...@@ -322,6 +335,138 @@ ...@@ -322,6 +335,138 @@
#define rightRotate30(a) (rightRotate((a), 30)) #define rightRotate30(a) (rightRotate((a), 30))
#define rightRotate31(a) (rightRotate((a), 31)) #define rightRotate31(a) (rightRotate((a), 31))
#else /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Composed rotation macros where 1 and 8 are fast, but others are slow */
/* Left rotate by 1 */
#define leftRotate1(a) (leftRotate((a), 1))
/* Left rotate by 2 */
#define leftRotate2(a) (leftRotate(leftRotate((a), 1), 1))
/* Left rotate by 3 */
#define leftRotate3(a) (leftRotate(leftRotate(leftRotate((a), 1), 1), 1))
/* Left rotate by 4 */
#define leftRotate4(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 1), 1), 1), 1))
/* Left rotate by 5: Rotate left by 8, then right by 3 */
#define leftRotate5(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 6: Rotate left by 8, then right by 2 */
#define leftRotate6(a) (rightRotate(rightRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 7: Rotate left by 8, then right by 1 */
#define leftRotate7(a) (rightRotate(leftRotate((a), 8), 1))
/* Left rotate by 8 */
#define leftRotate8(a) (leftRotate((a), 8))
/* Left rotate by 9: Rotate left by 8, then left by 1 */
#define leftRotate9(a) (leftRotate(leftRotate((a), 8), 1))
/* Left rotate by 10: Rotate left by 8, then left by 2 */
#define leftRotate10(a) (leftRotate(leftRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 11: Rotate left by 8, then left by 3 */
#define leftRotate11(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 12: Rotate left by 16, then right by 4 */
#define leftRotate12(a) (rightRotate(rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 13: Rotate left by 16, then right by 3 */
#define leftRotate13(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 14: Rotate left by 16, then right by 2 */
#define leftRotate14(a) (rightRotate(rightRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 15: Rotate left by 16, then right by 1 */
#define leftRotate15(a) (rightRotate(leftRotate((a), 16), 1))
/* Left rotate by 16 */
#define leftRotate16(a) (leftRotate((a), 16))
/* Left rotate by 17: Rotate left by 16, then left by 1 */
#define leftRotate17(a) (leftRotate(leftRotate((a), 16), 1))
/* Left rotate by 18: Rotate left by 16, then left by 2 */
#define leftRotate18(a) (leftRotate(leftRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 19: Rotate left by 16, then left by 3 */
#define leftRotate19(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 20: Rotate left by 16, then left by 4 */
#define leftRotate20(a) (leftRotate(leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 21: Rotate left by 24, then right by 3 */
#define leftRotate21(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 22: Rotate left by 24, then right by 2 */
#define leftRotate22(a) (rightRotate(rightRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 23: Rotate left by 24, then right by 1 */
#define leftRotate23(a) (rightRotate(leftRotate((a), 24), 1))
/* Left rotate by 24 */
#define leftRotate24(a) (leftRotate((a), 24))
/* Left rotate by 25: Rotate left by 24, then left by 1 */
#define leftRotate25(a) (leftRotate(leftRotate((a), 24), 1))
/* Left rotate by 26: Rotate left by 24, then left by 2 */
#define leftRotate26(a) (leftRotate(leftRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 27: Rotate left by 24, then left by 3 */
#define leftRotate27(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 28: Rotate right by 4 */
#define leftRotate28(a) (rightRotate(rightRotate(rightRotate(rightRotate((a), 1), 1), 1), 1))
/* Left rotate by 29: Rotate right by 3 */
#define leftRotate29(a) (rightRotate(rightRotate(rightRotate((a), 1), 1), 1))
/* Left rotate by 30: Rotate right by 2 */
#define leftRotate30(a) (rightRotate(rightRotate((a), 1), 1))
/* Left rotate by 31: Rotate right by 1 */
#define leftRotate31(a) (rightRotate((a), 1))
/* Define the 32-bit right rotations in terms of left rotations */
#define rightRotate1(a) (leftRotate31((a)))
#define rightRotate2(a) (leftRotate30((a)))
#define rightRotate3(a) (leftRotate29((a)))
#define rightRotate4(a) (leftRotate28((a)))
#define rightRotate5(a) (leftRotate27((a)))
#define rightRotate6(a) (leftRotate26((a)))
#define rightRotate7(a) (leftRotate25((a)))
#define rightRotate8(a) (leftRotate24((a)))
#define rightRotate9(a) (leftRotate23((a)))
#define rightRotate10(a) (leftRotate22((a)))
#define rightRotate11(a) (leftRotate21((a)))
#define rightRotate12(a) (leftRotate20((a)))
#define rightRotate13(a) (leftRotate19((a)))
#define rightRotate14(a) (leftRotate18((a)))
#define rightRotate15(a) (leftRotate17((a)))
#define rightRotate16(a) (leftRotate16((a)))
#define rightRotate17(a) (leftRotate15((a)))
#define rightRotate18(a) (leftRotate14((a)))
#define rightRotate19(a) (leftRotate13((a)))
#define rightRotate20(a) (leftRotate12((a)))
#define rightRotate21(a) (leftRotate11((a)))
#define rightRotate22(a) (leftRotate10((a)))
#define rightRotate23(a) (leftRotate9((a)))
#define rightRotate24(a) (leftRotate8((a)))
#define rightRotate25(a) (leftRotate7((a)))
#define rightRotate26(a) (leftRotate6((a)))
#define rightRotate27(a) (leftRotate5((a)))
#define rightRotate28(a) (leftRotate4((a)))
#define rightRotate29(a) (leftRotate3((a)))
#define rightRotate30(a) (leftRotate2((a)))
#define rightRotate31(a) (leftRotate1((a)))
#endif /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Rotation macros for 64-bit arguments */ /* Rotation macros for 64-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
......
#define CRYPTO_KEYBYTES 16
#define CRYPTO_NSECBYTES 0
#define CRYPTO_NPUBBYTES 15
#define CRYPTO_ABYTES 8
#define CRYPTO_NOOVERLAP 1
#include "comet.h"
int crypto_aead_encrypt
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k)
{
return comet_64_cham_aead_encrypt
(c, clen, m, mlen, ad, adlen, nsec, npub, k);
}
int crypto_aead_decrypt
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k)
{
return comet_64_cham_aead_decrypt
(m, mlen, nsec, c, clen, ad, adlen, npub, k);
}
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "internal-cham.h"
#include "internal-util.h"
#if !defined(__AVR__)
void cham128_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input)
{
uint32_t x0, x1, x2, x3;
uint32_t k[8];
uint8_t round;
/* Unpack the key and generate the key schedule */
k[0] = le_load_word32(key);
k[1] = le_load_word32(key + 4);
k[2] = le_load_word32(key + 8);
k[3] = le_load_word32(key + 12);
k[4] = k[1] ^ leftRotate1(k[1]) ^ leftRotate11(k[1]);
k[5] = k[0] ^ leftRotate1(k[0]) ^ leftRotate11(k[0]);
k[6] = k[3] ^ leftRotate1(k[3]) ^ leftRotate11(k[3]);
k[7] = k[2] ^ leftRotate1(k[2]) ^ leftRotate11(k[2]);
k[0] ^= leftRotate1(k[0]) ^ leftRotate8(k[0]);
k[1] ^= leftRotate1(k[1]) ^ leftRotate8(k[1]);
k[2] ^= leftRotate1(k[2]) ^ leftRotate8(k[2]);
k[3] ^= leftRotate1(k[3]) ^ leftRotate8(k[3]);
/* Unpack the input block */
x0 = le_load_word32(input);
x1 = le_load_word32(input + 4);
x2 = le_load_word32(input + 8);
x3 = le_load_word32(input + 12);
/* Perform the 80 rounds eight at a time */
for (round = 0; round < 80; round += 8) {
x0 = leftRotate8((x0 ^ round) + (leftRotate1(x1) ^ k[0]));
x1 = leftRotate1((x1 ^ (round + 1)) + (leftRotate8(x2) ^ k[1]));
x2 = leftRotate8((x2 ^ (round + 2)) + (leftRotate1(x3) ^ k[2]));
x3 = leftRotate1((x3 ^ (round + 3)) + (leftRotate8(x0) ^ k[3]));
x0 = leftRotate8((x0 ^ (round + 4)) + (leftRotate1(x1) ^ k[4]));
x1 = leftRotate1((x1 ^ (round + 5)) + (leftRotate8(x2) ^ k[5]));
x2 = leftRotate8((x2 ^ (round + 6)) + (leftRotate1(x3) ^ k[6]));
x3 = leftRotate1((x3 ^ (round + 7)) + (leftRotate8(x0) ^ k[7]));
}
/* Pack the state into the output block */
le_store_word32(output, x0);
le_store_word32(output + 4, x1);
le_store_word32(output + 8, x2);
le_store_word32(output + 12, x3);
}
void cham64_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input)
{
uint16_t x0, x1, x2, x3;
uint16_t k[16];
uint8_t round;
/* Unpack the key and generate the key schedule */
k[0] = le_load_word16(key);
k[1] = le_load_word16(key + 2);
k[2] = le_load_word16(key + 4);
k[3] = le_load_word16(key + 6);
k[4] = le_load_word16(key + 8);
k[5] = le_load_word16(key + 10);
k[6] = le_load_word16(key + 12);
k[7] = le_load_word16(key + 14);
k[8] = k[1] ^ leftRotate1_16(k[1]) ^ leftRotate11_16(k[1]);
k[9] = k[0] ^ leftRotate1_16(k[0]) ^ leftRotate11_16(k[0]);
k[10] = k[3] ^ leftRotate1_16(k[3]) ^ leftRotate11_16(k[3]);
k[11] = k[2] ^ leftRotate1_16(k[2]) ^ leftRotate11_16(k[2]);
k[12] = k[5] ^ leftRotate1_16(k[5]) ^ leftRotate11_16(k[5]);
k[13] = k[4] ^ leftRotate1_16(k[4]) ^ leftRotate11_16(k[4]);
k[14] = k[7] ^ leftRotate1_16(k[7]) ^ leftRotate11_16(k[7]);
k[15] = k[6] ^ leftRotate1_16(k[6]) ^ leftRotate11_16(k[6]);
k[0] ^= leftRotate1_16(k[0]) ^ leftRotate8_16(k[0]);
k[1] ^= leftRotate1_16(k[1]) ^ leftRotate8_16(k[1]);
k[2] ^= leftRotate1_16(k[2]) ^ leftRotate8_16(k[2]);
k[3] ^= leftRotate1_16(k[3]) ^ leftRotate8_16(k[3]);
k[4] ^= leftRotate1_16(k[4]) ^ leftRotate8_16(k[4]);
k[5] ^= leftRotate1_16(k[5]) ^ leftRotate8_16(k[5]);
k[6] ^= leftRotate1_16(k[6]) ^ leftRotate8_16(k[6]);
k[7] ^= leftRotate1_16(k[7]) ^ leftRotate8_16(k[7]);
/* Unpack the input block */
x0 = le_load_word16(input);
x1 = le_load_word16(input + 2);
x2 = le_load_word16(input + 4);
x3 = le_load_word16(input + 6);
/* Perform the 80 rounds four at a time */
for (round = 0; round < 80; round += 4) {
x0 = leftRotate8_16
((x0 ^ round) +
(leftRotate1_16(x1) ^ k[round % 16]));
x1 = leftRotate1_16
((x1 ^ (round + 1)) +
(leftRotate8_16(x2) ^ k[(round + 1) % 16]));
x2 = leftRotate8_16
((x2 ^ (round + 2)) +
(leftRotate1_16(x3) ^ k[(round + 2) % 16]));
x3 = leftRotate1_16
((x3 ^ (round + 3)) +
(leftRotate8_16(x0) ^ k[(round + 3) % 16]));
}
/* Pack the state into the output block */
le_store_word16(output, x0);
le_store_word16(output + 2, x1);
le_store_word16(output + 4, x2);
le_store_word16(output + 6, x3);
}
#endif
...@@ -22,6 +22,7 @@ ...@@ -22,6 +22,7 @@
#include "comet.h" #include "comet.h"
#include "internal-cham.h" #include "internal-cham.h"
#include "internal-speck64.h"
#include "internal-util.h" #include "internal-util.h"
#include <string.h> #include <string.h>
...@@ -478,58 +479,6 @@ int comet_64_cham_aead_decrypt ...@@ -478,58 +479,6 @@ int comet_64_cham_aead_decrypt
return aead_check_tag(m, *mlen, Y, c + *mlen, COMET_64_TAG_SIZE); return aead_check_tag(m, *mlen, Y, c + *mlen, COMET_64_TAG_SIZE);
} }
/**
* \brief Encrypts a 64-bit block with SPECK-64-128 in COMET byte order.
*
* \param key Points to the 16 bytes of the key.
* \param output Output buffer which must be at least 8 bytes in length.
* \param input Input buffer which must be at least 8 bytes in length.
*
* The \a input and \a output buffers can be the same buffer for
* in-place encryption.
*
* \note This version differs from standard SPECK-64 in that it uses the
* little-endian byte order from the COMET specification which is different
* from the big-endian byte order from the original SPECK paper.
*/
static void speck64_128_comet_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input)
{
uint32_t l[4];
uint32_t x, y, s;
uint8_t round;
uint8_t li_in = 0;
uint8_t li_out = 3;
/* Unpack the key and the input block */
s = le_load_word32(key);
l[0] = le_load_word32(key + 4);
l[1] = le_load_word32(key + 8);
l[2] = le_load_word32(key + 12);
y = le_load_word32(input);
x = le_load_word32(input + 4);
/* Perform all encryption rounds except the last */
for (round = 0; round < 26; ++round) {
/* Perform the round with the current key schedule word */
x = (rightRotate8(x) + y) ^ s;
y = leftRotate3(y) ^ x;
/* Calculate the next key schedule word */
l[li_out] = (s + rightRotate8(l[li_in])) ^ round;
s = leftRotate3(s) ^ l[li_out];
li_in = (li_in + 1) & 0x03;
li_out = (li_out + 1) & 0x03;
}
/* Perform the last encryption round and write the result to the output */
x = (rightRotate8(x) + y) ^ s;
y = leftRotate3(y) ^ x;
le_store_word32(output, y);
le_store_word32(output + 4, x);
}
int comet_64_speck_aead_encrypt int comet_64_speck_aead_encrypt
(unsigned char *c, unsigned long long *clen, (unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen, const unsigned char *m, unsigned long long mlen,
...@@ -547,23 +496,23 @@ int comet_64_speck_aead_encrypt ...@@ -547,23 +496,23 @@ int comet_64_speck_aead_encrypt
/* Set up the initial state of Y and Z */ /* Set up the initial state of Y and Z */
memset(Y, 0, 8); memset(Y, 0, 8);
speck64_128_comet_encrypt(k, Y, Y); speck64_128_encrypt(k, Y, Y);
memcpy(Z, npub, 15); memcpy(Z, npub, 15);
Z[15] = 0; Z[15] = 0;
lw_xor_block(Z, k, 16); lw_xor_block(Z, k, 16);
/* Process the associated data */ /* Process the associated data */
if (adlen > 0) if (adlen > 0)
comet_process_ad(Y, Z, 8, speck64_128_comet_encrypt, ad, adlen); comet_process_ad(Y, Z, 8, speck64_128_encrypt, ad, adlen);
/* Encrypt the plaintext to produce the ciphertext */ /* Encrypt the plaintext to produce the ciphertext */
if (mlen > 0) if (mlen > 0)
comet_encrypt_64(Y, Z, speck64_128_comet_encrypt, c, m, mlen); comet_encrypt_64(Y, Z, speck64_128_encrypt, c, m, mlen);
/* Generate the authentication tag */ /* Generate the authentication tag */
Z[15] ^= 0x80; Z[15] ^= 0x80;
comet_adjust_block_key(Z); comet_adjust_block_key(Z);
speck64_128_comet_encrypt(Z, c + mlen, Y); speck64_128_encrypt(Z, c + mlen, Y);
return 0; return 0;
} }
...@@ -586,22 +535,22 @@ int comet_64_speck_aead_decrypt ...@@ -586,22 +535,22 @@ int comet_64_speck_aead_decrypt
/* Set up the initial state of Y and Z */ /* Set up the initial state of Y and Z */
memset(Y, 0, 8); memset(Y, 0, 8);
speck64_128_comet_encrypt(k, Y, Y); speck64_128_encrypt(k, Y, Y);
memcpy(Z, npub, 15); memcpy(Z, npub, 15);
Z[15] = 0; Z[15] = 0;
lw_xor_block(Z, k, 16); lw_xor_block(Z, k, 16);
/* Process the associated data */ /* Process the associated data */
if (adlen > 0) if (adlen > 0)
comet_process_ad(Y, Z, 8, speck64_128_comet_encrypt, ad, adlen); comet_process_ad(Y, Z, 8, speck64_128_encrypt, ad, adlen);
/* Decrypt the ciphertext to produce the plaintext */ /* Decrypt the ciphertext to produce the plaintext */
if (clen > COMET_64_TAG_SIZE) if (clen > COMET_64_TAG_SIZE)
comet_decrypt_64(Y, Z, speck64_128_comet_encrypt, m, c, *mlen); comet_decrypt_64(Y, Z, speck64_128_encrypt, m, c, *mlen);
/* Check the authentication tag */ /* Check the authentication tag */
Z[15] ^= 0x80; Z[15] ^= 0x80;
comet_adjust_block_key(Z); comet_adjust_block_key(Z);
speck64_128_comet_encrypt(Z, Y, Y); speck64_128_encrypt(Z, Y, Y);
return aead_check_tag(m, *mlen, Y, c + *mlen, COMET_64_TAG_SIZE); return aead_check_tag(m, *mlen, Y, c + *mlen, COMET_64_TAG_SIZE);
} }
...@@ -23,6 +23,8 @@ ...@@ -23,6 +23,8 @@
#include "internal-cham.h" #include "internal-cham.h"
#include "internal-util.h" #include "internal-util.h"
#if !defined(__AVR__)
void cham128_128_encrypt void cham128_128_encrypt
(const unsigned char *key, unsigned char *output, (const unsigned char *key, unsigned char *output,
const unsigned char *input) const unsigned char *input)
...@@ -132,3 +134,5 @@ void cham64_128_encrypt ...@@ -132,3 +134,5 @@ void cham64_128_encrypt
le_store_word16(output + 4, x2); le_store_word16(output + 4, x2);
le_store_word16(output + 6, x3); le_store_word16(output + 6, x3);
} }
#endif
...@@ -238,6 +238,17 @@ ...@@ -238,6 +238,17 @@
} \ } \
} while (0) } while (0)
/* Rotation functions need to be optimised for best performance on AVR.
* The most efficient rotations are where the number of bits is 1 or a
* multiple of 8, so we compose the efficient rotations to produce all
* other rotation counts of interest. */
#if defined(__AVR__)
#define LW_CRYPTO_ROTATE32_COMPOSED 1
#else
#define LW_CRYPTO_ROTATE32_COMPOSED 0
#endif
/* Rotation macros for 32-bit arguments */ /* Rotation macros for 32-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
...@@ -254,6 +265,8 @@ ...@@ -254,6 +265,8 @@
(_temp >> (bits)) | (_temp << (32 - (bits))); \ (_temp >> (bits)) | (_temp << (32 - (bits))); \
})) }))
#if !LW_CRYPTO_ROTATE32_COMPOSED
/* Left rotate by a specific number of bits. These macros may be replaced /* Left rotate by a specific number of bits. These macros may be replaced
* with more efficient ones on platforms that lack a barrel shifter */ * with more efficient ones on platforms that lack a barrel shifter */
#define leftRotate1(a) (leftRotate((a), 1)) #define leftRotate1(a) (leftRotate((a), 1))
...@@ -322,6 +335,138 @@ ...@@ -322,6 +335,138 @@
#define rightRotate30(a) (rightRotate((a), 30)) #define rightRotate30(a) (rightRotate((a), 30))
#define rightRotate31(a) (rightRotate((a), 31)) #define rightRotate31(a) (rightRotate((a), 31))
#else /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Composed rotation macros where 1 and 8 are fast, but others are slow */
/* Left rotate by 1 */
#define leftRotate1(a) (leftRotate((a), 1))
/* Left rotate by 2 */
#define leftRotate2(a) (leftRotate(leftRotate((a), 1), 1))
/* Left rotate by 3 */
#define leftRotate3(a) (leftRotate(leftRotate(leftRotate((a), 1), 1), 1))
/* Left rotate by 4 */
#define leftRotate4(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 1), 1), 1), 1))
/* Left rotate by 5: Rotate left by 8, then right by 3 */
#define leftRotate5(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 6: Rotate left by 8, then right by 2 */
#define leftRotate6(a) (rightRotate(rightRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 7: Rotate left by 8, then right by 1 */
#define leftRotate7(a) (rightRotate(leftRotate((a), 8), 1))
/* Left rotate by 8 */
#define leftRotate8(a) (leftRotate((a), 8))
/* Left rotate by 9: Rotate left by 8, then left by 1 */
#define leftRotate9(a) (leftRotate(leftRotate((a), 8), 1))
/* Left rotate by 10: Rotate left by 8, then left by 2 */
#define leftRotate10(a) (leftRotate(leftRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 11: Rotate left by 8, then left by 3 */
#define leftRotate11(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 12: Rotate left by 16, then right by 4 */
#define leftRotate12(a) (rightRotate(rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 13: Rotate left by 16, then right by 3 */
#define leftRotate13(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 14: Rotate left by 16, then right by 2 */
#define leftRotate14(a) (rightRotate(rightRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 15: Rotate left by 16, then right by 1 */
#define leftRotate15(a) (rightRotate(leftRotate((a), 16), 1))
/* Left rotate by 16 */
#define leftRotate16(a) (leftRotate((a), 16))
/* Left rotate by 17: Rotate left by 16, then left by 1 */
#define leftRotate17(a) (leftRotate(leftRotate((a), 16), 1))
/* Left rotate by 18: Rotate left by 16, then left by 2 */
#define leftRotate18(a) (leftRotate(leftRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 19: Rotate left by 16, then left by 3 */
#define leftRotate19(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 20: Rotate left by 16, then left by 4 */
#define leftRotate20(a) (leftRotate(leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 21: Rotate left by 24, then right by 3 */
#define leftRotate21(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 22: Rotate left by 24, then right by 2 */
#define leftRotate22(a) (rightRotate(rightRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 23: Rotate left by 24, then right by 1 */
#define leftRotate23(a) (rightRotate(leftRotate((a), 24), 1))
/* Left rotate by 24 */
#define leftRotate24(a) (leftRotate((a), 24))
/* Left rotate by 25: Rotate left by 24, then left by 1 */
#define leftRotate25(a) (leftRotate(leftRotate((a), 24), 1))
/* Left rotate by 26: Rotate left by 24, then left by 2 */
#define leftRotate26(a) (leftRotate(leftRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 27: Rotate left by 24, then left by 3 */
#define leftRotate27(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 28: Rotate right by 4 */
#define leftRotate28(a) (rightRotate(rightRotate(rightRotate(rightRotate((a), 1), 1), 1), 1))
/* Left rotate by 29: Rotate right by 3 */
#define leftRotate29(a) (rightRotate(rightRotate(rightRotate((a), 1), 1), 1))
/* Left rotate by 30: Rotate right by 2 */
#define leftRotate30(a) (rightRotate(rightRotate((a), 1), 1))
/* Left rotate by 31: Rotate right by 1 */
#define leftRotate31(a) (rightRotate((a), 1))
/* Define the 32-bit right rotations in terms of left rotations */
#define rightRotate1(a) (leftRotate31((a)))
#define rightRotate2(a) (leftRotate30((a)))
#define rightRotate3(a) (leftRotate29((a)))
#define rightRotate4(a) (leftRotate28((a)))
#define rightRotate5(a) (leftRotate27((a)))
#define rightRotate6(a) (leftRotate26((a)))
#define rightRotate7(a) (leftRotate25((a)))
#define rightRotate8(a) (leftRotate24((a)))
#define rightRotate9(a) (leftRotate23((a)))
#define rightRotate10(a) (leftRotate22((a)))
#define rightRotate11(a) (leftRotate21((a)))
#define rightRotate12(a) (leftRotate20((a)))
#define rightRotate13(a) (leftRotate19((a)))
#define rightRotate14(a) (leftRotate18((a)))
#define rightRotate15(a) (leftRotate17((a)))
#define rightRotate16(a) (leftRotate16((a)))
#define rightRotate17(a) (leftRotate15((a)))
#define rightRotate18(a) (leftRotate14((a)))
#define rightRotate19(a) (leftRotate13((a)))
#define rightRotate20(a) (leftRotate12((a)))
#define rightRotate21(a) (leftRotate11((a)))
#define rightRotate22(a) (leftRotate10((a)))
#define rightRotate23(a) (leftRotate9((a)))
#define rightRotate24(a) (leftRotate8((a)))
#define rightRotate25(a) (leftRotate7((a)))
#define rightRotate26(a) (leftRotate6((a)))
#define rightRotate27(a) (leftRotate5((a)))
#define rightRotate28(a) (leftRotate4((a)))
#define rightRotate29(a) (leftRotate3((a)))
#define rightRotate30(a) (leftRotate2((a)))
#define rightRotate31(a) (leftRotate1((a)))
#endif /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Rotation macros for 64-bit arguments */ /* Rotation macros for 64-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
......
#define CRYPTO_KEYBYTES 16
#define CRYPTO_NSECBYTES 0
#define CRYPTO_NPUBBYTES 15
#define CRYPTO_ABYTES 8
#define CRYPTO_NOOVERLAP 1
#include "comet.h"
int crypto_aead_encrypt
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k)
{
return comet_64_speck_aead_encrypt
(c, clen, m, mlen, ad, adlen, nsec, npub, k);
}
int crypto_aead_decrypt
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k)
{
return comet_64_speck_aead_decrypt
(m, mlen, nsec, c, clen, ad, adlen, npub, k);
}
/*
* Copyright (C) 2020 Southern Storm Software, Pty Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "internal-cham.h"
#include "internal-util.h"
#if !defined(__AVR__)
void cham128_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input)
{
uint32_t x0, x1, x2, x3;
uint32_t k[8];
uint8_t round;
/* Unpack the key and generate the key schedule */
k[0] = le_load_word32(key);
k[1] = le_load_word32(key + 4);
k[2] = le_load_word32(key + 8);
k[3] = le_load_word32(key + 12);
k[4] = k[1] ^ leftRotate1(k[1]) ^ leftRotate11(k[1]);
k[5] = k[0] ^ leftRotate1(k[0]) ^ leftRotate11(k[0]);
k[6] = k[3] ^ leftRotate1(k[3]) ^ leftRotate11(k[3]);
k[7] = k[2] ^ leftRotate1(k[2]) ^ leftRotate11(k[2]);
k[0] ^= leftRotate1(k[0]) ^ leftRotate8(k[0]);
k[1] ^= leftRotate1(k[1]) ^ leftRotate8(k[1]);
k[2] ^= leftRotate1(k[2]) ^ leftRotate8(k[2]);
k[3] ^= leftRotate1(k[3]) ^ leftRotate8(k[3]);
/* Unpack the input block */
x0 = le_load_word32(input);
x1 = le_load_word32(input + 4);
x2 = le_load_word32(input + 8);
x3 = le_load_word32(input + 12);
/* Perform the 80 rounds eight at a time */
for (round = 0; round < 80; round += 8) {
x0 = leftRotate8((x0 ^ round) + (leftRotate1(x1) ^ k[0]));
x1 = leftRotate1((x1 ^ (round + 1)) + (leftRotate8(x2) ^ k[1]));
x2 = leftRotate8((x2 ^ (round + 2)) + (leftRotate1(x3) ^ k[2]));
x3 = leftRotate1((x3 ^ (round + 3)) + (leftRotate8(x0) ^ k[3]));
x0 = leftRotate8((x0 ^ (round + 4)) + (leftRotate1(x1) ^ k[4]));
x1 = leftRotate1((x1 ^ (round + 5)) + (leftRotate8(x2) ^ k[5]));
x2 = leftRotate8((x2 ^ (round + 6)) + (leftRotate1(x3) ^ k[6]));
x3 = leftRotate1((x3 ^ (round + 7)) + (leftRotate8(x0) ^ k[7]));
}
/* Pack the state into the output block */
le_store_word32(output, x0);
le_store_word32(output + 4, x1);
le_store_word32(output + 8, x2);
le_store_word32(output + 12, x3);
}
void cham64_128_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input)
{
uint16_t x0, x1, x2, x3;
uint16_t k[16];
uint8_t round;
/* Unpack the key and generate the key schedule */
k[0] = le_load_word16(key);
k[1] = le_load_word16(key + 2);
k[2] = le_load_word16(key + 4);
k[3] = le_load_word16(key + 6);
k[4] = le_load_word16(key + 8);
k[5] = le_load_word16(key + 10);
k[6] = le_load_word16(key + 12);
k[7] = le_load_word16(key + 14);
k[8] = k[1] ^ leftRotate1_16(k[1]) ^ leftRotate11_16(k[1]);
k[9] = k[0] ^ leftRotate1_16(k[0]) ^ leftRotate11_16(k[0]);
k[10] = k[3] ^ leftRotate1_16(k[3]) ^ leftRotate11_16(k[3]);
k[11] = k[2] ^ leftRotate1_16(k[2]) ^ leftRotate11_16(k[2]);
k[12] = k[5] ^ leftRotate1_16(k[5]) ^ leftRotate11_16(k[5]);
k[13] = k[4] ^ leftRotate1_16(k[4]) ^ leftRotate11_16(k[4]);
k[14] = k[7] ^ leftRotate1_16(k[7]) ^ leftRotate11_16(k[7]);
k[15] = k[6] ^ leftRotate1_16(k[6]) ^ leftRotate11_16(k[6]);
k[0] ^= leftRotate1_16(k[0]) ^ leftRotate8_16(k[0]);
k[1] ^= leftRotate1_16(k[1]) ^ leftRotate8_16(k[1]);
k[2] ^= leftRotate1_16(k[2]) ^ leftRotate8_16(k[2]);
k[3] ^= leftRotate1_16(k[3]) ^ leftRotate8_16(k[3]);
k[4] ^= leftRotate1_16(k[4]) ^ leftRotate8_16(k[4]);
k[5] ^= leftRotate1_16(k[5]) ^ leftRotate8_16(k[5]);
k[6] ^= leftRotate1_16(k[6]) ^ leftRotate8_16(k[6]);
k[7] ^= leftRotate1_16(k[7]) ^ leftRotate8_16(k[7]);
/* Unpack the input block */
x0 = le_load_word16(input);
x1 = le_load_word16(input + 2);
x2 = le_load_word16(input + 4);
x3 = le_load_word16(input + 6);
/* Perform the 80 rounds four at a time */
for (round = 0; round < 80; round += 4) {
x0 = leftRotate8_16
((x0 ^ round) +
(leftRotate1_16(x1) ^ k[round % 16]));
x1 = leftRotate1_16
((x1 ^ (round + 1)) +
(leftRotate8_16(x2) ^ k[(round + 1) % 16]));
x2 = leftRotate8_16
((x2 ^ (round + 2)) +
(leftRotate1_16(x3) ^ k[(round + 2) % 16]));
x3 = leftRotate1_16
((x3 ^ (round + 3)) +
(leftRotate8_16(x0) ^ k[(round + 3) % 16]));
}
/* Pack the state into the output block */
le_store_word16(output, x0);
le_store_word16(output + 2, x1);
le_store_word16(output + 4, x2);
le_store_word16(output + 6, x3);
}
#endif
...@@ -22,6 +22,7 @@ ...@@ -22,6 +22,7 @@
#include "comet.h" #include "comet.h"
#include "internal-cham.h" #include "internal-cham.h"
#include "internal-speck64.h"
#include "internal-util.h" #include "internal-util.h"
#include <string.h> #include <string.h>
...@@ -478,58 +479,6 @@ int comet_64_cham_aead_decrypt ...@@ -478,58 +479,6 @@ int comet_64_cham_aead_decrypt
return aead_check_tag(m, *mlen, Y, c + *mlen, COMET_64_TAG_SIZE); return aead_check_tag(m, *mlen, Y, c + *mlen, COMET_64_TAG_SIZE);
} }
/**
* \brief Encrypts a 64-bit block with SPECK-64-128 in COMET byte order.
*
* \param key Points to the 16 bytes of the key.
* \param output Output buffer which must be at least 8 bytes in length.
* \param input Input buffer which must be at least 8 bytes in length.
*
* The \a input and \a output buffers can be the same buffer for
* in-place encryption.
*
* \note This version differs from standard SPECK-64 in that it uses the
* little-endian byte order from the COMET specification which is different
* from the big-endian byte order from the original SPECK paper.
*/
static void speck64_128_comet_encrypt
(const unsigned char *key, unsigned char *output,
const unsigned char *input)
{
uint32_t l[4];
uint32_t x, y, s;
uint8_t round;
uint8_t li_in = 0;
uint8_t li_out = 3;
/* Unpack the key and the input block */
s = le_load_word32(key);
l[0] = le_load_word32(key + 4);
l[1] = le_load_word32(key + 8);
l[2] = le_load_word32(key + 12);
y = le_load_word32(input);
x = le_load_word32(input + 4);
/* Perform all encryption rounds except the last */
for (round = 0; round < 26; ++round) {
/* Perform the round with the current key schedule word */
x = (rightRotate8(x) + y) ^ s;
y = leftRotate3(y) ^ x;
/* Calculate the next key schedule word */
l[li_out] = (s + rightRotate8(l[li_in])) ^ round;
s = leftRotate3(s) ^ l[li_out];
li_in = (li_in + 1) & 0x03;
li_out = (li_out + 1) & 0x03;
}
/* Perform the last encryption round and write the result to the output */
x = (rightRotate8(x) + y) ^ s;
y = leftRotate3(y) ^ x;
le_store_word32(output, y);
le_store_word32(output + 4, x);
}
int comet_64_speck_aead_encrypt int comet_64_speck_aead_encrypt
(unsigned char *c, unsigned long long *clen, (unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen, const unsigned char *m, unsigned long long mlen,
...@@ -547,23 +496,23 @@ int comet_64_speck_aead_encrypt ...@@ -547,23 +496,23 @@ int comet_64_speck_aead_encrypt
/* Set up the initial state of Y and Z */ /* Set up the initial state of Y and Z */
memset(Y, 0, 8); memset(Y, 0, 8);
speck64_128_comet_encrypt(k, Y, Y); speck64_128_encrypt(k, Y, Y);
memcpy(Z, npub, 15); memcpy(Z, npub, 15);
Z[15] = 0; Z[15] = 0;
lw_xor_block(Z, k, 16); lw_xor_block(Z, k, 16);
/* Process the associated data */ /* Process the associated data */
if (adlen > 0) if (adlen > 0)
comet_process_ad(Y, Z, 8, speck64_128_comet_encrypt, ad, adlen); comet_process_ad(Y, Z, 8, speck64_128_encrypt, ad, adlen);
/* Encrypt the plaintext to produce the ciphertext */ /* Encrypt the plaintext to produce the ciphertext */
if (mlen > 0) if (mlen > 0)
comet_encrypt_64(Y, Z, speck64_128_comet_encrypt, c, m, mlen); comet_encrypt_64(Y, Z, speck64_128_encrypt, c, m, mlen);
/* Generate the authentication tag */ /* Generate the authentication tag */
Z[15] ^= 0x80; Z[15] ^= 0x80;
comet_adjust_block_key(Z); comet_adjust_block_key(Z);
speck64_128_comet_encrypt(Z, c + mlen, Y); speck64_128_encrypt(Z, c + mlen, Y);
return 0; return 0;
} }
...@@ -586,22 +535,22 @@ int comet_64_speck_aead_decrypt ...@@ -586,22 +535,22 @@ int comet_64_speck_aead_decrypt
/* Set up the initial state of Y and Z */ /* Set up the initial state of Y and Z */
memset(Y, 0, 8); memset(Y, 0, 8);
speck64_128_comet_encrypt(k, Y, Y); speck64_128_encrypt(k, Y, Y);
memcpy(Z, npub, 15); memcpy(Z, npub, 15);
Z[15] = 0; Z[15] = 0;
lw_xor_block(Z, k, 16); lw_xor_block(Z, k, 16);
/* Process the associated data */ /* Process the associated data */
if (adlen > 0) if (adlen > 0)
comet_process_ad(Y, Z, 8, speck64_128_comet_encrypt, ad, adlen); comet_process_ad(Y, Z, 8, speck64_128_encrypt, ad, adlen);
/* Decrypt the ciphertext to produce the plaintext */ /* Decrypt the ciphertext to produce the plaintext */
if (clen > COMET_64_TAG_SIZE) if (clen > COMET_64_TAG_SIZE)
comet_decrypt_64(Y, Z, speck64_128_comet_encrypt, m, c, *mlen); comet_decrypt_64(Y, Z, speck64_128_encrypt, m, c, *mlen);
/* Check the authentication tag */ /* Check the authentication tag */
Z[15] ^= 0x80; Z[15] ^= 0x80;
comet_adjust_block_key(Z); comet_adjust_block_key(Z);
speck64_128_comet_encrypt(Z, Y, Y); speck64_128_encrypt(Z, Y, Y);
return aead_check_tag(m, *mlen, Y, c + *mlen, COMET_64_TAG_SIZE); return aead_check_tag(m, *mlen, Y, c + *mlen, COMET_64_TAG_SIZE);
} }
...@@ -23,6 +23,8 @@ ...@@ -23,6 +23,8 @@
#include "internal-cham.h" #include "internal-cham.h"
#include "internal-util.h" #include "internal-util.h"
#if !defined(__AVR__)
void cham128_128_encrypt void cham128_128_encrypt
(const unsigned char *key, unsigned char *output, (const unsigned char *key, unsigned char *output,
const unsigned char *input) const unsigned char *input)
...@@ -132,3 +134,5 @@ void cham64_128_encrypt ...@@ -132,3 +134,5 @@ void cham64_128_encrypt
le_store_word16(output + 4, x2); le_store_word16(output + 4, x2);
le_store_word16(output + 6, x3); le_store_word16(output + 6, x3);
} }
#endif
...@@ -238,6 +238,17 @@ ...@@ -238,6 +238,17 @@
} \ } \
} while (0) } while (0)
/* Rotation functions need to be optimised for best performance on AVR.
* The most efficient rotations are where the number of bits is 1 or a
* multiple of 8, so we compose the efficient rotations to produce all
* other rotation counts of interest. */
#if defined(__AVR__)
#define LW_CRYPTO_ROTATE32_COMPOSED 1
#else
#define LW_CRYPTO_ROTATE32_COMPOSED 0
#endif
/* Rotation macros for 32-bit arguments */ /* Rotation macros for 32-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
...@@ -254,6 +265,8 @@ ...@@ -254,6 +265,8 @@
(_temp >> (bits)) | (_temp << (32 - (bits))); \ (_temp >> (bits)) | (_temp << (32 - (bits))); \
})) }))
#if !LW_CRYPTO_ROTATE32_COMPOSED
/* Left rotate by a specific number of bits. These macros may be replaced /* Left rotate by a specific number of bits. These macros may be replaced
* with more efficient ones on platforms that lack a barrel shifter */ * with more efficient ones on platforms that lack a barrel shifter */
#define leftRotate1(a) (leftRotate((a), 1)) #define leftRotate1(a) (leftRotate((a), 1))
...@@ -322,6 +335,138 @@ ...@@ -322,6 +335,138 @@
#define rightRotate30(a) (rightRotate((a), 30)) #define rightRotate30(a) (rightRotate((a), 30))
#define rightRotate31(a) (rightRotate((a), 31)) #define rightRotate31(a) (rightRotate((a), 31))
#else /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Composed rotation macros where 1 and 8 are fast, but others are slow */
/* Left rotate by 1 */
#define leftRotate1(a) (leftRotate((a), 1))
/* Left rotate by 2 */
#define leftRotate2(a) (leftRotate(leftRotate((a), 1), 1))
/* Left rotate by 3 */
#define leftRotate3(a) (leftRotate(leftRotate(leftRotate((a), 1), 1), 1))
/* Left rotate by 4 */
#define leftRotate4(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 1), 1), 1), 1))
/* Left rotate by 5: Rotate left by 8, then right by 3 */
#define leftRotate5(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 6: Rotate left by 8, then right by 2 */
#define leftRotate6(a) (rightRotate(rightRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 7: Rotate left by 8, then right by 1 */
#define leftRotate7(a) (rightRotate(leftRotate((a), 8), 1))
/* Left rotate by 8 */
#define leftRotate8(a) (leftRotate((a), 8))
/* Left rotate by 9: Rotate left by 8, then left by 1 */
#define leftRotate9(a) (leftRotate(leftRotate((a), 8), 1))
/* Left rotate by 10: Rotate left by 8, then left by 2 */
#define leftRotate10(a) (leftRotate(leftRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 11: Rotate left by 8, then left by 3 */
#define leftRotate11(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 12: Rotate left by 16, then right by 4 */
#define leftRotate12(a) (rightRotate(rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 13: Rotate left by 16, then right by 3 */
#define leftRotate13(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 14: Rotate left by 16, then right by 2 */
#define leftRotate14(a) (rightRotate(rightRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 15: Rotate left by 16, then right by 1 */
#define leftRotate15(a) (rightRotate(leftRotate((a), 16), 1))
/* Left rotate by 16 */
#define leftRotate16(a) (leftRotate((a), 16))
/* Left rotate by 17: Rotate left by 16, then left by 1 */
#define leftRotate17(a) (leftRotate(leftRotate((a), 16), 1))
/* Left rotate by 18: Rotate left by 16, then left by 2 */
#define leftRotate18(a) (leftRotate(leftRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 19: Rotate left by 16, then left by 3 */
#define leftRotate19(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 20: Rotate left by 16, then left by 4 */
#define leftRotate20(a) (leftRotate(leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 21: Rotate left by 24, then right by 3 */
#define leftRotate21(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 22: Rotate left by 24, then right by 2 */
#define leftRotate22(a) (rightRotate(rightRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 23: Rotate left by 24, then right by 1 */
#define leftRotate23(a) (rightRotate(leftRotate((a), 24), 1))
/* Left rotate by 24 */
#define leftRotate24(a) (leftRotate((a), 24))
/* Left rotate by 25: Rotate left by 24, then left by 1 */
#define leftRotate25(a) (leftRotate(leftRotate((a), 24), 1))
/* Left rotate by 26: Rotate left by 24, then left by 2 */
#define leftRotate26(a) (leftRotate(leftRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 27: Rotate left by 24, then left by 3 */
#define leftRotate27(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 28: Rotate right by 4 */
#define leftRotate28(a) (rightRotate(rightRotate(rightRotate(rightRotate((a), 1), 1), 1), 1))
/* Left rotate by 29: Rotate right by 3 */
#define leftRotate29(a) (rightRotate(rightRotate(rightRotate((a), 1), 1), 1))
/* Left rotate by 30: Rotate right by 2 */
#define leftRotate30(a) (rightRotate(rightRotate((a), 1), 1))
/* Left rotate by 31: Rotate right by 1 */
#define leftRotate31(a) (rightRotate((a), 1))
/* Define the 32-bit right rotations in terms of left rotations */
#define rightRotate1(a) (leftRotate31((a)))
#define rightRotate2(a) (leftRotate30((a)))
#define rightRotate3(a) (leftRotate29((a)))
#define rightRotate4(a) (leftRotate28((a)))
#define rightRotate5(a) (leftRotate27((a)))
#define rightRotate6(a) (leftRotate26((a)))
#define rightRotate7(a) (leftRotate25((a)))
#define rightRotate8(a) (leftRotate24((a)))
#define rightRotate9(a) (leftRotate23((a)))
#define rightRotate10(a) (leftRotate22((a)))
#define rightRotate11(a) (leftRotate21((a)))
#define rightRotate12(a) (leftRotate20((a)))
#define rightRotate13(a) (leftRotate19((a)))
#define rightRotate14(a) (leftRotate18((a)))
#define rightRotate15(a) (leftRotate17((a)))
#define rightRotate16(a) (leftRotate16((a)))
#define rightRotate17(a) (leftRotate15((a)))
#define rightRotate18(a) (leftRotate14((a)))
#define rightRotate19(a) (leftRotate13((a)))
#define rightRotate20(a) (leftRotate12((a)))
#define rightRotate21(a) (leftRotate11((a)))
#define rightRotate22(a) (leftRotate10((a)))
#define rightRotate23(a) (leftRotate9((a)))
#define rightRotate24(a) (leftRotate8((a)))
#define rightRotate25(a) (leftRotate7((a)))
#define rightRotate26(a) (leftRotate6((a)))
#define rightRotate27(a) (leftRotate5((a)))
#define rightRotate28(a) (leftRotate4((a)))
#define rightRotate29(a) (leftRotate3((a)))
#define rightRotate30(a) (leftRotate2((a)))
#define rightRotate31(a) (leftRotate1((a)))
#endif /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Rotation macros for 64-bit arguments */ /* Rotation macros for 64-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
......
#define CRYPTO_KEYBYTES 16
#define CRYPTO_NSECBYTES 0
#define CRYPTO_NPUBBYTES 16
#define CRYPTO_ABYTES 16
#define CRYPTO_NOOVERLAP 1
#include "drygascon.h"
int crypto_aead_encrypt
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k)
{
return drygascon128_aead_encrypt
(c, clen, m, mlen, ad, adlen, nsec, npub, k);
}
int crypto_aead_decrypt
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k)
{
return drygascon128_aead_decrypt
(m, mlen, nsec, c, clen, ad, adlen, npub, k);
}
...@@ -23,6 +23,8 @@ ...@@ -23,6 +23,8 @@
#include "internal-drysponge.h" #include "internal-drysponge.h"
#include <string.h> #include <string.h>
#if !defined(__AVR__)
/* Right rotations in bit-interleaved format */ /* Right rotations in bit-interleaved format */
#define intRightRotateEven(x,bits) \ #define intRightRotateEven(x,bits) \
(__extension__ ({ \ (__extension__ ({ \
...@@ -289,6 +291,8 @@ void drysponge256_g(drysponge256_state_t *state) ...@@ -289,6 +291,8 @@ void drysponge256_g(drysponge256_state_t *state)
} }
} }
#endif /* !__AVR__ */
void drysponge128_g_core(drysponge128_state_t *state) void drysponge128_g_core(drysponge128_state_t *state)
{ {
unsigned round; unsigned round;
...@@ -304,6 +308,7 @@ void drysponge256_g_core(drysponge256_state_t *state) ...@@ -304,6 +308,7 @@ void drysponge256_g_core(drysponge256_state_t *state)
} }
/** /**
* \fn uint32_t drysponge_select_x(const uint32_t x[4], uint8_t index)
* \brief Selects an element of x in constant time. * \brief Selects an element of x in constant time.
* *
* \param x Points to the four elements of x. * \param x Points to the four elements of x.
...@@ -311,6 +316,7 @@ void drysponge256_g_core(drysponge256_state_t *state) ...@@ -311,6 +316,7 @@ void drysponge256_g_core(drysponge256_state_t *state)
* *
* \return The selected element of x. * \return The selected element of x.
*/ */
#if !defined(__AVR__)
STATIC_INLINE uint32_t drysponge_select_x(const uint32_t x[4], uint8_t index) STATIC_INLINE uint32_t drysponge_select_x(const uint32_t x[4], uint8_t index)
{ {
/* We need to be careful how we select each element of x because /* We need to be careful how we select each element of x because
...@@ -340,6 +346,11 @@ STATIC_INLINE uint32_t drysponge_select_x(const uint32_t x[4], uint8_t index) ...@@ -340,6 +346,11 @@ STATIC_INLINE uint32_t drysponge_select_x(const uint32_t x[4], uint8_t index)
mask = -((uint32_t)((0x04 - (index ^ 0x03)) >> 2)); mask = -((uint32_t)((0x04 - (index ^ 0x03)) >> 2));
return result ^ (x[3] & mask); return result ^ (x[3] & mask);
} }
#else
/* AVR is more or less immune to cache timing issues because it doesn't
* have anything like an L1 or L2 cache. Select the word directly */
#define drysponge_select_x(x, index) ((x)[(index)])
#endif
/** /**
* \brief Mixes a 32-bit value into the DrySPONGE128 state. * \brief Mixes a 32-bit value into the DrySPONGE128 state.
......
...@@ -238,6 +238,17 @@ ...@@ -238,6 +238,17 @@
} \ } \
} while (0) } while (0)
/* Rotation functions need to be optimised for best performance on AVR.
* The most efficient rotations are where the number of bits is 1 or a
* multiple of 8, so we compose the efficient rotations to produce all
* other rotation counts of interest. */
#if defined(__AVR__)
#define LW_CRYPTO_ROTATE32_COMPOSED 1
#else
#define LW_CRYPTO_ROTATE32_COMPOSED 0
#endif
/* Rotation macros for 32-bit arguments */ /* Rotation macros for 32-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
...@@ -254,6 +265,8 @@ ...@@ -254,6 +265,8 @@
(_temp >> (bits)) | (_temp << (32 - (bits))); \ (_temp >> (bits)) | (_temp << (32 - (bits))); \
})) }))
#if !LW_CRYPTO_ROTATE32_COMPOSED
/* Left rotate by a specific number of bits. These macros may be replaced /* Left rotate by a specific number of bits. These macros may be replaced
* with more efficient ones on platforms that lack a barrel shifter */ * with more efficient ones on platforms that lack a barrel shifter */
#define leftRotate1(a) (leftRotate((a), 1)) #define leftRotate1(a) (leftRotate((a), 1))
...@@ -322,6 +335,138 @@ ...@@ -322,6 +335,138 @@
#define rightRotate30(a) (rightRotate((a), 30)) #define rightRotate30(a) (rightRotate((a), 30))
#define rightRotate31(a) (rightRotate((a), 31)) #define rightRotate31(a) (rightRotate((a), 31))
#else /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Composed rotation macros where 1 and 8 are fast, but others are slow */
/* Left rotate by 1 */
#define leftRotate1(a) (leftRotate((a), 1))
/* Left rotate by 2 */
#define leftRotate2(a) (leftRotate(leftRotate((a), 1), 1))
/* Left rotate by 3 */
#define leftRotate3(a) (leftRotate(leftRotate(leftRotate((a), 1), 1), 1))
/* Left rotate by 4 */
#define leftRotate4(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 1), 1), 1), 1))
/* Left rotate by 5: Rotate left by 8, then right by 3 */
#define leftRotate5(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 6: Rotate left by 8, then right by 2 */
#define leftRotate6(a) (rightRotate(rightRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 7: Rotate left by 8, then right by 1 */
#define leftRotate7(a) (rightRotate(leftRotate((a), 8), 1))
/* Left rotate by 8 */
#define leftRotate8(a) (leftRotate((a), 8))
/* Left rotate by 9: Rotate left by 8, then left by 1 */
#define leftRotate9(a) (leftRotate(leftRotate((a), 8), 1))
/* Left rotate by 10: Rotate left by 8, then left by 2 */
#define leftRotate10(a) (leftRotate(leftRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 11: Rotate left by 8, then left by 3 */
#define leftRotate11(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 12: Rotate left by 16, then right by 4 */
#define leftRotate12(a) (rightRotate(rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 13: Rotate left by 16, then right by 3 */
#define leftRotate13(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 14: Rotate left by 16, then right by 2 */
#define leftRotate14(a) (rightRotate(rightRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 15: Rotate left by 16, then right by 1 */
#define leftRotate15(a) (rightRotate(leftRotate((a), 16), 1))
/* Left rotate by 16 */
#define leftRotate16(a) (leftRotate((a), 16))
/* Left rotate by 17: Rotate left by 16, then left by 1 */
#define leftRotate17(a) (leftRotate(leftRotate((a), 16), 1))
/* Left rotate by 18: Rotate left by 16, then left by 2 */
#define leftRotate18(a) (leftRotate(leftRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 19: Rotate left by 16, then left by 3 */
#define leftRotate19(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 20: Rotate left by 16, then left by 4 */
#define leftRotate20(a) (leftRotate(leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 21: Rotate left by 24, then right by 3 */
#define leftRotate21(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 22: Rotate left by 24, then right by 2 */
#define leftRotate22(a) (rightRotate(rightRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 23: Rotate left by 24, then right by 1 */
#define leftRotate23(a) (rightRotate(leftRotate((a), 24), 1))
/* Left rotate by 24 */
#define leftRotate24(a) (leftRotate((a), 24))
/* Left rotate by 25: Rotate left by 24, then left by 1 */
#define leftRotate25(a) (leftRotate(leftRotate((a), 24), 1))
/* Left rotate by 26: Rotate left by 24, then left by 2 */
#define leftRotate26(a) (leftRotate(leftRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 27: Rotate left by 24, then left by 3 */
#define leftRotate27(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 28: Rotate right by 4 */
#define leftRotate28(a) (rightRotate(rightRotate(rightRotate(rightRotate((a), 1), 1), 1), 1))
/* Left rotate by 29: Rotate right by 3 */
#define leftRotate29(a) (rightRotate(rightRotate(rightRotate((a), 1), 1), 1))
/* Left rotate by 30: Rotate right by 2 */
#define leftRotate30(a) (rightRotate(rightRotate((a), 1), 1))
/* Left rotate by 31: Rotate right by 1 */
#define leftRotate31(a) (rightRotate((a), 1))
/* Define the 32-bit right rotations in terms of left rotations */
#define rightRotate1(a) (leftRotate31((a)))
#define rightRotate2(a) (leftRotate30((a)))
#define rightRotate3(a) (leftRotate29((a)))
#define rightRotate4(a) (leftRotate28((a)))
#define rightRotate5(a) (leftRotate27((a)))
#define rightRotate6(a) (leftRotate26((a)))
#define rightRotate7(a) (leftRotate25((a)))
#define rightRotate8(a) (leftRotate24((a)))
#define rightRotate9(a) (leftRotate23((a)))
#define rightRotate10(a) (leftRotate22((a)))
#define rightRotate11(a) (leftRotate21((a)))
#define rightRotate12(a) (leftRotate20((a)))
#define rightRotate13(a) (leftRotate19((a)))
#define rightRotate14(a) (leftRotate18((a)))
#define rightRotate15(a) (leftRotate17((a)))
#define rightRotate16(a) (leftRotate16((a)))
#define rightRotate17(a) (leftRotate15((a)))
#define rightRotate18(a) (leftRotate14((a)))
#define rightRotate19(a) (leftRotate13((a)))
#define rightRotate20(a) (leftRotate12((a)))
#define rightRotate21(a) (leftRotate11((a)))
#define rightRotate22(a) (leftRotate10((a)))
#define rightRotate23(a) (leftRotate9((a)))
#define rightRotate24(a) (leftRotate8((a)))
#define rightRotate25(a) (leftRotate7((a)))
#define rightRotate26(a) (leftRotate6((a)))
#define rightRotate27(a) (leftRotate5((a)))
#define rightRotate28(a) (leftRotate4((a)))
#define rightRotate29(a) (leftRotate3((a)))
#define rightRotate30(a) (leftRotate2((a)))
#define rightRotate31(a) (leftRotate1((a)))
#endif /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Rotation macros for 64-bit arguments */ /* Rotation macros for 64-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
......
#define CRYPTO_KEYBYTES 32
#define CRYPTO_NSECBYTES 0
#define CRYPTO_NPUBBYTES 16
#define CRYPTO_ABYTES 32
#define CRYPTO_NOOVERLAP 1
#include "drygascon.h"
int crypto_aead_encrypt
(unsigned char *c, unsigned long long *clen,
const unsigned char *m, unsigned long long mlen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k)
{
return drygascon256_aead_encrypt
(c, clen, m, mlen, ad, adlen, nsec, npub, k);
}
int crypto_aead_decrypt
(unsigned char *m, unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c, unsigned long long clen,
const unsigned char *ad, unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k)
{
return drygascon256_aead_decrypt
(m, mlen, nsec, c, clen, ad, adlen, npub, k);
}
...@@ -23,6 +23,8 @@ ...@@ -23,6 +23,8 @@
#include "internal-drysponge.h" #include "internal-drysponge.h"
#include <string.h> #include <string.h>
#if !defined(__AVR__)
/* Right rotations in bit-interleaved format */ /* Right rotations in bit-interleaved format */
#define intRightRotateEven(x,bits) \ #define intRightRotateEven(x,bits) \
(__extension__ ({ \ (__extension__ ({ \
...@@ -289,6 +291,8 @@ void drysponge256_g(drysponge256_state_t *state) ...@@ -289,6 +291,8 @@ void drysponge256_g(drysponge256_state_t *state)
} }
} }
#endif /* !__AVR__ */
void drysponge128_g_core(drysponge128_state_t *state) void drysponge128_g_core(drysponge128_state_t *state)
{ {
unsigned round; unsigned round;
...@@ -304,6 +308,7 @@ void drysponge256_g_core(drysponge256_state_t *state) ...@@ -304,6 +308,7 @@ void drysponge256_g_core(drysponge256_state_t *state)
} }
/** /**
* \fn uint32_t drysponge_select_x(const uint32_t x[4], uint8_t index)
* \brief Selects an element of x in constant time. * \brief Selects an element of x in constant time.
* *
* \param x Points to the four elements of x. * \param x Points to the four elements of x.
...@@ -311,6 +316,7 @@ void drysponge256_g_core(drysponge256_state_t *state) ...@@ -311,6 +316,7 @@ void drysponge256_g_core(drysponge256_state_t *state)
* *
* \return The selected element of x. * \return The selected element of x.
*/ */
#if !defined(__AVR__)
STATIC_INLINE uint32_t drysponge_select_x(const uint32_t x[4], uint8_t index) STATIC_INLINE uint32_t drysponge_select_x(const uint32_t x[4], uint8_t index)
{ {
/* We need to be careful how we select each element of x because /* We need to be careful how we select each element of x because
...@@ -340,6 +346,11 @@ STATIC_INLINE uint32_t drysponge_select_x(const uint32_t x[4], uint8_t index) ...@@ -340,6 +346,11 @@ STATIC_INLINE uint32_t drysponge_select_x(const uint32_t x[4], uint8_t index)
mask = -((uint32_t)((0x04 - (index ^ 0x03)) >> 2)); mask = -((uint32_t)((0x04 - (index ^ 0x03)) >> 2));
return result ^ (x[3] & mask); return result ^ (x[3] & mask);
} }
#else
/* AVR is more or less immune to cache timing issues because it doesn't
* have anything like an L1 or L2 cache. Select the word directly */
#define drysponge_select_x(x, index) ((x)[(index)])
#endif
/** /**
* \brief Mixes a 32-bit value into the DrySPONGE128 state. * \brief Mixes a 32-bit value into the DrySPONGE128 state.
......
...@@ -238,6 +238,17 @@ ...@@ -238,6 +238,17 @@
} \ } \
} while (0) } while (0)
/* Rotation functions need to be optimised for best performance on AVR.
* The most efficient rotations are where the number of bits is 1 or a
* multiple of 8, so we compose the efficient rotations to produce all
* other rotation counts of interest. */
#if defined(__AVR__)
#define LW_CRYPTO_ROTATE32_COMPOSED 1
#else
#define LW_CRYPTO_ROTATE32_COMPOSED 0
#endif
/* Rotation macros for 32-bit arguments */ /* Rotation macros for 32-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
...@@ -254,6 +265,8 @@ ...@@ -254,6 +265,8 @@
(_temp >> (bits)) | (_temp << (32 - (bits))); \ (_temp >> (bits)) | (_temp << (32 - (bits))); \
})) }))
#if !LW_CRYPTO_ROTATE32_COMPOSED
/* Left rotate by a specific number of bits. These macros may be replaced /* Left rotate by a specific number of bits. These macros may be replaced
* with more efficient ones on platforms that lack a barrel shifter */ * with more efficient ones on platforms that lack a barrel shifter */
#define leftRotate1(a) (leftRotate((a), 1)) #define leftRotate1(a) (leftRotate((a), 1))
...@@ -322,6 +335,138 @@ ...@@ -322,6 +335,138 @@
#define rightRotate30(a) (rightRotate((a), 30)) #define rightRotate30(a) (rightRotate((a), 30))
#define rightRotate31(a) (rightRotate((a), 31)) #define rightRotate31(a) (rightRotate((a), 31))
#else /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Composed rotation macros where 1 and 8 are fast, but others are slow */
/* Left rotate by 1 */
#define leftRotate1(a) (leftRotate((a), 1))
/* Left rotate by 2 */
#define leftRotate2(a) (leftRotate(leftRotate((a), 1), 1))
/* Left rotate by 3 */
#define leftRotate3(a) (leftRotate(leftRotate(leftRotate((a), 1), 1), 1))
/* Left rotate by 4 */
#define leftRotate4(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 1), 1), 1), 1))
/* Left rotate by 5: Rotate left by 8, then right by 3 */
#define leftRotate5(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 6: Rotate left by 8, then right by 2 */
#define leftRotate6(a) (rightRotate(rightRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 7: Rotate left by 8, then right by 1 */
#define leftRotate7(a) (rightRotate(leftRotate((a), 8), 1))
/* Left rotate by 8 */
#define leftRotate8(a) (leftRotate((a), 8))
/* Left rotate by 9: Rotate left by 8, then left by 1 */
#define leftRotate9(a) (leftRotate(leftRotate((a), 8), 1))
/* Left rotate by 10: Rotate left by 8, then left by 2 */
#define leftRotate10(a) (leftRotate(leftRotate(leftRotate((a), 8), 1), 1))
/* Left rotate by 11: Rotate left by 8, then left by 3 */
#define leftRotate11(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 8), 1), 1), 1))
/* Left rotate by 12: Rotate left by 16, then right by 4 */
#define leftRotate12(a) (rightRotate(rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 13: Rotate left by 16, then right by 3 */
#define leftRotate13(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 14: Rotate left by 16, then right by 2 */
#define leftRotate14(a) (rightRotate(rightRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 15: Rotate left by 16, then right by 1 */
#define leftRotate15(a) (rightRotate(leftRotate((a), 16), 1))
/* Left rotate by 16 */
#define leftRotate16(a) (leftRotate((a), 16))
/* Left rotate by 17: Rotate left by 16, then left by 1 */
#define leftRotate17(a) (leftRotate(leftRotate((a), 16), 1))
/* Left rotate by 18: Rotate left by 16, then left by 2 */
#define leftRotate18(a) (leftRotate(leftRotate(leftRotate((a), 16), 1), 1))
/* Left rotate by 19: Rotate left by 16, then left by 3 */
#define leftRotate19(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1))
/* Left rotate by 20: Rotate left by 16, then left by 4 */
#define leftRotate20(a) (leftRotate(leftRotate(leftRotate(leftRotate(leftRotate((a), 16), 1), 1), 1), 1))
/* Left rotate by 21: Rotate left by 24, then right by 3 */
#define leftRotate21(a) (rightRotate(rightRotate(rightRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 22: Rotate left by 24, then right by 2 */
#define leftRotate22(a) (rightRotate(rightRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 23: Rotate left by 24, then right by 1 */
#define leftRotate23(a) (rightRotate(leftRotate((a), 24), 1))
/* Left rotate by 24 */
#define leftRotate24(a) (leftRotate((a), 24))
/* Left rotate by 25: Rotate left by 24, then left by 1 */
#define leftRotate25(a) (leftRotate(leftRotate((a), 24), 1))
/* Left rotate by 26: Rotate left by 24, then left by 2 */
#define leftRotate26(a) (leftRotate(leftRotate(leftRotate((a), 24), 1), 1))
/* Left rotate by 27: Rotate left by 24, then left by 3 */
#define leftRotate27(a) (leftRotate(leftRotate(leftRotate(leftRotate((a), 24), 1), 1), 1))
/* Left rotate by 28: Rotate right by 4 */
#define leftRotate28(a) (rightRotate(rightRotate(rightRotate(rightRotate((a), 1), 1), 1), 1))
/* Left rotate by 29: Rotate right by 3 */
#define leftRotate29(a) (rightRotate(rightRotate(rightRotate((a), 1), 1), 1))
/* Left rotate by 30: Rotate right by 2 */
#define leftRotate30(a) (rightRotate(rightRotate((a), 1), 1))
/* Left rotate by 31: Rotate right by 1 */
#define leftRotate31(a) (rightRotate((a), 1))
/* Define the 32-bit right rotations in terms of left rotations */
#define rightRotate1(a) (leftRotate31((a)))
#define rightRotate2(a) (leftRotate30((a)))
#define rightRotate3(a) (leftRotate29((a)))
#define rightRotate4(a) (leftRotate28((a)))
#define rightRotate5(a) (leftRotate27((a)))
#define rightRotate6(a) (leftRotate26((a)))
#define rightRotate7(a) (leftRotate25((a)))
#define rightRotate8(a) (leftRotate24((a)))
#define rightRotate9(a) (leftRotate23((a)))
#define rightRotate10(a) (leftRotate22((a)))
#define rightRotate11(a) (leftRotate21((a)))
#define rightRotate12(a) (leftRotate20((a)))
#define rightRotate13(a) (leftRotate19((a)))
#define rightRotate14(a) (leftRotate18((a)))
#define rightRotate15(a) (leftRotate17((a)))
#define rightRotate16(a) (leftRotate16((a)))
#define rightRotate17(a) (leftRotate15((a)))
#define rightRotate18(a) (leftRotate14((a)))
#define rightRotate19(a) (leftRotate13((a)))
#define rightRotate20(a) (leftRotate12((a)))
#define rightRotate21(a) (leftRotate11((a)))
#define rightRotate22(a) (leftRotate10((a)))
#define rightRotate23(a) (leftRotate9((a)))
#define rightRotate24(a) (leftRotate8((a)))
#define rightRotate25(a) (leftRotate7((a)))
#define rightRotate26(a) (leftRotate6((a)))
#define rightRotate27(a) (leftRotate5((a)))
#define rightRotate28(a) (leftRotate4((a)))
#define rightRotate29(a) (leftRotate3((a)))
#define rightRotate30(a) (leftRotate2((a)))
#define rightRotate31(a) (leftRotate1((a)))
#endif /* LW_CRYPTO_ROTATE32_COMPOSED */
/* Rotation macros for 64-bit arguments */ /* Rotation macros for 64-bit arguments */
/* Generic left rotate */ /* Generic left rotate */
......
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This source diff could not be displayed because it is too large. You can view the blob instead.
This source diff could not be displayed because it is too large. You can view the blob instead.
This source diff could not be displayed because it is too large. You can view the blob instead.
This source diff could not be displayed because it is too large. You can view the blob instead.
This source diff could not be displayed because it is too large. You can view the blob instead.
This source diff could not be displayed because it is too large. You can view the blob instead.
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