711 lines
22 KiB
C++
711 lines
22 KiB
C++
// lsh.cpp - written and placed in the public domain by Jeffrey Walton
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// Based on the specification and source code provided by
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// Korea Internet & Security Agency (KISA) website. Also
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// see https://seed.kisa.or.kr/kisa/algorithm/EgovLSHInfo.do
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// and https://seed.kisa.or.kr/kisa/Board/22/detailView.do.
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// We are hitting some sort of GCC bug in the LSH AVX2 code path.
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// Clang is OK on the AVX2 code path. We believe it is GCC Issue
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// 82735, https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82735. It
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// makes using zeroupper a little tricky.
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#include "pch.h"
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#include "config.h"
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#include "lsh.h"
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#include "cpu.h"
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#include "misc.h"
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#if defined(CRYPTOPP_SSSE3_AVAILABLE) && defined(CRYPTOPP_ENABLE_64BIT_SSE)
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#if defined(CRYPTOPP_SSSE3_AVAILABLE)
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# include <emmintrin.h>
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# include <tmmintrin.h>
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#endif
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#if defined(CRYPTOPP_XOP_AVAILABLE)
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# include <ammintrin.h>
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#endif
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// GCC at 4.5. Clang is unknown. Also see https://stackoverflow.com/a/42493893.
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#if (CRYPTOPP_GCC_VERSION >= 40500)
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# include <x86intrin.h>
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#endif
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ANONYMOUS_NAMESPACE_BEGIN
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/* LSH Constants */
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const unsigned int LSH256_MSG_BLK_BYTE_LEN = 128;
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// const unsigned int LSH256_MSG_BLK_BIT_LEN = 1024;
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// const unsigned int LSH256_CV_BYTE_LEN = 64;
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const unsigned int LSH256_HASH_VAL_MAX_BYTE_LEN = 32;
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// const unsigned int MSG_BLK_WORD_LEN = 32;
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const unsigned int CV_WORD_LEN = 16;
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const unsigned int CONST_WORD_LEN = 8;
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// const unsigned int HASH_VAL_MAX_WORD_LEN = 8;
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// const unsigned int WORD_BIT_LEN = 32;
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const unsigned int NUM_STEPS = 26;
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const unsigned int ROT_EVEN_ALPHA = 29;
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const unsigned int ROT_EVEN_BETA = 1;
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const unsigned int ROT_ODD_ALPHA = 5;
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const unsigned int ROT_ODD_BETA = 17;
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const unsigned int LSH_TYPE_256_256 = 0x0000020;
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const unsigned int LSH_TYPE_256_224 = 0x000001C;
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// const unsigned int LSH_TYPE_224 = LSH_TYPE_256_224;
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// const unsigned int LSH_TYPE_256 = LSH_TYPE_256_256;
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/* Error Code */
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const unsigned int LSH_SUCCESS = 0x0;
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// const unsigned int LSH_ERR_NULL_PTR = 0x2401;
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// const unsigned int LSH_ERR_INVALID_ALGTYPE = 0x2402;
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const unsigned int LSH_ERR_INVALID_DATABITLEN = 0x2403;
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const unsigned int LSH_ERR_INVALID_STATE = 0x2404;
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/* Index into our state array */
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const unsigned int AlgorithmType = 80;
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const unsigned int RemainingBits = 81;
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NAMESPACE_END
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NAMESPACE_BEGIN(CryptoPP)
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NAMESPACE_BEGIN(LSH)
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// lsh256.cpp
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extern const word32 LSH256_IV224[CV_WORD_LEN];
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extern const word32 LSH256_IV256[CV_WORD_LEN];
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extern const word32 LSH256_StepConstants[CONST_WORD_LEN * NUM_STEPS];
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NAMESPACE_END // LSH
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NAMESPACE_END // Crypto++
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ANONYMOUS_NAMESPACE_BEGIN
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using CryptoPP::byte;
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using CryptoPP::word32;
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using CryptoPP::rotlFixed;
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using CryptoPP::rotlConstant;
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using CryptoPP::GetBlock;
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using CryptoPP::LittleEndian;
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using CryptoPP::ConditionalByteReverse;
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using CryptoPP::LITTLE_ENDIAN_ORDER;
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typedef byte lsh_u8;
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typedef word32 lsh_u32;
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typedef word32 lsh_uint;
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typedef word32 lsh_err;
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typedef word32 lsh_type;
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using CryptoPP::LSH::LSH256_IV224;
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using CryptoPP::LSH::LSH256_IV256;
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using CryptoPP::LSH::LSH256_StepConstants;
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struct LSH256_SSSE3_Context
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{
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LSH256_SSSE3_Context(word32* state, word32 algType, word32& remainingBitLength) :
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cv_l(state+0), cv_r(state+8), sub_msgs(state+16),
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last_block(reinterpret_cast<byte*>(state+48)),
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remain_databitlen(remainingBitLength),
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alg_type(static_cast<lsh_type>(algType)) {}
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lsh_u32* cv_l; // start of our state block
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lsh_u32* cv_r;
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lsh_u32* sub_msgs;
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lsh_u8* last_block;
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lsh_u32& remain_databitlen;
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lsh_type alg_type;
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};
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struct LSH256_SSSE3_Internal
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{
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LSH256_SSSE3_Internal(word32* state) :
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submsg_e_l(state+16), submsg_e_r(state+24),
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submsg_o_l(state+32), submsg_o_r(state+40) { }
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lsh_u32* submsg_e_l; /* even left sub-message */
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lsh_u32* submsg_e_r; /* even right sub-message */
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lsh_u32* submsg_o_l; /* odd left sub-message */
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lsh_u32* submsg_o_r; /* odd right sub-message */
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};
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// const word32 g_gamma256[8] = { 0, 8, 16, 24, 24, 16, 8, 0 };
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/* LSH AlgType Macro */
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inline bool LSH_IS_LSH512(lsh_uint val) {
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return (val & 0xf0000) == 0;
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}
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inline lsh_uint LSH_GET_SMALL_HASHBIT(lsh_uint val) {
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return val >> 24;
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}
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inline lsh_uint LSH_GET_HASHBYTE(lsh_uint val) {
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return val & 0xffff;
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}
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inline lsh_uint LSH_GET_HASHBIT(lsh_uint val) {
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return (LSH_GET_HASHBYTE(val) << 3) - LSH_GET_SMALL_HASHBIT(val);
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}
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inline lsh_u32 loadLE32(lsh_u32 v) {
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return ConditionalByteReverse(LITTLE_ENDIAN_ORDER, v);
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}
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lsh_u32 ROTL(lsh_u32 x, lsh_u32 r) {
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return rotlFixed(x, r);
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}
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// Original code relied upon unaligned lsh_u32 buffer
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inline void load_msg_blk(LSH256_SSSE3_Internal* i_state, const lsh_u8 msgblk[LSH256_MSG_BLK_BYTE_LEN])
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{
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CRYPTOPP_ASSERT(i_state != NULLPTR);
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lsh_u32* submsg_e_l = i_state->submsg_e_l;
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lsh_u32* submsg_e_r = i_state->submsg_e_r;
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lsh_u32* submsg_o_l = i_state->submsg_o_l;
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lsh_u32* submsg_o_r = i_state->submsg_o_r;
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_mm_storeu_si128(M128_CAST(submsg_e_l+0),
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_mm_loadu_si128(CONST_M128_CAST(msgblk+0)));
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_mm_storeu_si128(M128_CAST(submsg_e_l+4),
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_mm_loadu_si128(CONST_M128_CAST(msgblk+16)));
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_mm_storeu_si128(M128_CAST(submsg_e_r+0),
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_mm_loadu_si128(CONST_M128_CAST(msgblk+32)));
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_mm_storeu_si128(M128_CAST(submsg_e_r+4),
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_mm_loadu_si128(CONST_M128_CAST(msgblk+48)));
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_mm_storeu_si128(M128_CAST(submsg_o_l+0),
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_mm_loadu_si128(CONST_M128_CAST(msgblk+64)));
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_mm_storeu_si128(M128_CAST(submsg_o_l+4),
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_mm_loadu_si128(CONST_M128_CAST(msgblk+80)));
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_mm_storeu_si128(M128_CAST(submsg_o_r+0),
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_mm_loadu_si128(CONST_M128_CAST(msgblk+96)));
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_mm_storeu_si128(M128_CAST(submsg_o_r+4),
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_mm_loadu_si128(CONST_M128_CAST(msgblk+112)));
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}
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inline void msg_exp_even(LSH256_SSSE3_Internal* i_state)
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{
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CRYPTOPP_ASSERT(i_state != NULLPTR);
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lsh_u32* submsg_e_l = i_state->submsg_e_l;
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lsh_u32* submsg_e_r = i_state->submsg_e_r;
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lsh_u32* submsg_o_l = i_state->submsg_o_l;
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lsh_u32* submsg_o_r = i_state->submsg_o_r;
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_mm_storeu_si128(M128_CAST(submsg_e_l+0), _mm_add_epi32(
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_mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(submsg_o_l+0)), _MM_SHUFFLE(3,2,1,0)),
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_mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(submsg_e_l+0)), _MM_SHUFFLE(1,0,2,3))));
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_mm_storeu_si128(M128_CAST(submsg_e_l+4), _mm_add_epi32(
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_mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(submsg_o_l+4)), _MM_SHUFFLE(3,2,1,0)),
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_mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(submsg_e_l+4)), _MM_SHUFFLE(2,1,0,3))));
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_mm_storeu_si128(M128_CAST(submsg_e_r+0), _mm_add_epi32(
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_mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(submsg_o_r+0)), _MM_SHUFFLE(3,2,1,0)),
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_mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(submsg_e_r+0)), _MM_SHUFFLE(1,0,2,3))));
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_mm_storeu_si128(M128_CAST(submsg_e_r+4), _mm_add_epi32(
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_mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(submsg_o_r+4)), _MM_SHUFFLE(3,2,1,0)),
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_mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(submsg_e_r+4)), _MM_SHUFFLE(2,1,0,3))));
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}
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inline void msg_exp_odd(LSH256_SSSE3_Internal* i_state)
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{
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CRYPTOPP_ASSERT(i_state != NULLPTR);
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lsh_u32* submsg_e_l = i_state->submsg_e_l;
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lsh_u32* submsg_e_r = i_state->submsg_e_r;
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lsh_u32* submsg_o_l = i_state->submsg_o_l;
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lsh_u32* submsg_o_r = i_state->submsg_o_r;
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_mm_storeu_si128(M128_CAST(submsg_o_l+0), _mm_add_epi32(
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_mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(submsg_e_l+0)), _MM_SHUFFLE(3,2,1,0)),
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_mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(submsg_o_l+0)), _MM_SHUFFLE(1,0,2,3))));
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_mm_storeu_si128(M128_CAST(submsg_o_l+4), _mm_add_epi32(
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_mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(submsg_e_l+4)), _MM_SHUFFLE(3,2,1,0)),
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_mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(submsg_o_l+4)), _MM_SHUFFLE(2,1,0,3))));
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_mm_storeu_si128(M128_CAST(submsg_o_r+0), _mm_add_epi32(
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_mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(submsg_e_r+0)), _MM_SHUFFLE(3,2,1,0)),
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_mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(submsg_o_r+0)), _MM_SHUFFLE(1,0,2,3))));
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_mm_storeu_si128(M128_CAST(submsg_o_r+4), _mm_add_epi32(
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_mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(submsg_e_r+4)), _MM_SHUFFLE(3,2,1,0)),
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_mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(submsg_o_r+4)), _MM_SHUFFLE(2,1,0,3))));
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}
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inline void load_sc(const lsh_u32** p_const_v, size_t i)
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{
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CRYPTOPP_ASSERT(p_const_v != NULLPTR);
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*p_const_v = &LSH256_StepConstants[i];
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}
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inline void msg_add_even(lsh_u32 cv_l[8], lsh_u32 cv_r[8], LSH256_SSSE3_Internal* i_state)
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{
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CRYPTOPP_ASSERT(i_state != NULLPTR);
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lsh_u32* submsg_e_l = i_state->submsg_e_l;
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lsh_u32* submsg_e_r = i_state->submsg_e_r;
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_mm_storeu_si128(M128_CAST(cv_l+0), _mm_xor_si128(
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_mm_loadu_si128(CONST_M128_CAST(cv_l+0)),
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_mm_loadu_si128(CONST_M128_CAST(submsg_e_l+0))));
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_mm_storeu_si128(M128_CAST(cv_l+4), _mm_xor_si128(
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_mm_loadu_si128(CONST_M128_CAST(cv_l+4)),
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_mm_loadu_si128(CONST_M128_CAST(submsg_e_l+4))));
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_mm_storeu_si128(M128_CAST(cv_r+0), _mm_xor_si128(
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_mm_loadu_si128(CONST_M128_CAST(cv_r+0)),
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_mm_loadu_si128(CONST_M128_CAST(submsg_e_r+0))));
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_mm_storeu_si128(M128_CAST(cv_r+4), _mm_xor_si128(
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_mm_loadu_si128(CONST_M128_CAST(cv_r+4)),
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_mm_loadu_si128(CONST_M128_CAST(submsg_e_r+4))));
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}
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inline void msg_add_odd(lsh_u32 cv_l[8], lsh_u32 cv_r[8], LSH256_SSSE3_Internal* i_state)
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{
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CRYPTOPP_ASSERT(i_state != NULLPTR);
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lsh_u32* submsg_o_l = i_state->submsg_o_l;
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lsh_u32* submsg_o_r = i_state->submsg_o_r;
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_mm_storeu_si128(M128_CAST(cv_l), _mm_xor_si128(
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_mm_loadu_si128(CONST_M128_CAST(cv_l)),
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_mm_loadu_si128(CONST_M128_CAST(submsg_o_l))));
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_mm_storeu_si128(M128_CAST(cv_l+4), _mm_xor_si128(
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_mm_loadu_si128(CONST_M128_CAST(cv_l+4)),
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_mm_loadu_si128(CONST_M128_CAST(submsg_o_l+4))));
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_mm_storeu_si128(M128_CAST(cv_r), _mm_xor_si128(
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_mm_loadu_si128(CONST_M128_CAST(cv_r)),
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_mm_loadu_si128(CONST_M128_CAST(submsg_o_r))));
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_mm_storeu_si128(M128_CAST(cv_r+4), _mm_xor_si128(
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_mm_loadu_si128(CONST_M128_CAST(cv_r+4)),
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_mm_loadu_si128(CONST_M128_CAST(submsg_o_r+4))));
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}
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inline void add_blk(lsh_u32 cv_l[8], const lsh_u32 cv_r[8])
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{
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_mm_storeu_si128(M128_CAST(cv_l), _mm_add_epi32(
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_mm_loadu_si128(CONST_M128_CAST(cv_l)),
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_mm_loadu_si128(CONST_M128_CAST(cv_r))));
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_mm_storeu_si128(M128_CAST(cv_l+4), _mm_add_epi32(
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_mm_loadu_si128(CONST_M128_CAST(cv_l+4)),
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_mm_loadu_si128(CONST_M128_CAST(cv_r+4))));
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}
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template <unsigned int R>
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inline void rotate_blk(lsh_u32 cv[8])
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{
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#if defined(CRYPTOPP_XOP_AVAILABLE)
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_mm_storeu_si128(M128_CAST(cv),
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_mm_roti_epi32(_mm_loadu_si128(CONST_M128_CAST(cv)), R));
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_mm_storeu_si128(M128_CAST(cv+4),
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_mm_roti_epi32(_mm_loadu_si128(CONST_M128_CAST(cv+4)), R));
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#else
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_mm_storeu_si128(M128_CAST(cv), _mm_or_si128(
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_mm_slli_epi32(_mm_loadu_si128(CONST_M128_CAST(cv)), R),
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_mm_srli_epi32(_mm_loadu_si128(CONST_M128_CAST(cv)), 32-R)));
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_mm_storeu_si128(M128_CAST(cv+4), _mm_or_si128(
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_mm_slli_epi32(_mm_loadu_si128(CONST_M128_CAST(cv+4)), R),
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_mm_srli_epi32(_mm_loadu_si128(CONST_M128_CAST(cv+4)), 32-R)));
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#endif
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}
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inline void xor_with_const(lsh_u32* cv_l, const lsh_u32* const_v)
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{
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_mm_storeu_si128(M128_CAST(cv_l), _mm_xor_si128(
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_mm_loadu_si128(CONST_M128_CAST(cv_l)),
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_mm_loadu_si128(CONST_M128_CAST(const_v))));
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_mm_storeu_si128(M128_CAST(cv_l+4), _mm_xor_si128(
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_mm_loadu_si128(CONST_M128_CAST(cv_l+4)),
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_mm_loadu_si128(CONST_M128_CAST(const_v+4))));
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}
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inline void rotate_msg_gamma(lsh_u32 cv_r[8])
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{
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// g_gamma256[8] = { 0, 8, 16, 24, 24, 16, 8, 0 };
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_mm_storeu_si128(M128_CAST(cv_r+0),
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_mm_shuffle_epi8(_mm_loadu_si128(CONST_M128_CAST(cv_r+0)),
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_mm_set_epi8(12,15,14,13, 9,8,11,10, 6,5,4,7, 3,2,1,0)));
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_mm_storeu_si128(M128_CAST(cv_r+4),
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_mm_shuffle_epi8(_mm_loadu_si128(CONST_M128_CAST(cv_r+4)),
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_mm_set_epi8(15,14,13,12, 10,9,8,11, 5,4,7,6, 0,3,2,1)));
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}
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inline void word_perm(lsh_u32 cv_l[8], lsh_u32 cv_r[8])
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{
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_mm_storeu_si128(M128_CAST(cv_l+0), _mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(cv_l+0)), _MM_SHUFFLE(3,1,0,2)));
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_mm_storeu_si128(M128_CAST(cv_l+4), _mm_shuffle_epi32(
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_mm_loadu_si128(CONST_M128_CAST(cv_l+4)), _MM_SHUFFLE(3,1,0,2)));
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_mm_storeu_si128(M128_CAST(cv_r+0), _mm_shuffle_epi32(
|
|
_mm_loadu_si128(CONST_M128_CAST(cv_r+0)), _MM_SHUFFLE(1,2,3,0)));
|
|
_mm_storeu_si128(M128_CAST(cv_r+4), _mm_shuffle_epi32(
|
|
_mm_loadu_si128(CONST_M128_CAST(cv_r+4)), _MM_SHUFFLE(1,2,3,0)));
|
|
|
|
__m128i temp = _mm_loadu_si128(CONST_M128_CAST(cv_l+0));
|
|
_mm_storeu_si128(M128_CAST(cv_l+0),
|
|
_mm_loadu_si128(CONST_M128_CAST(cv_l+4)));
|
|
_mm_storeu_si128(M128_CAST(cv_l+4),
|
|
_mm_loadu_si128(CONST_M128_CAST(cv_r+4)));
|
|
_mm_storeu_si128(M128_CAST(cv_r+4),
|
|
_mm_loadu_si128(CONST_M128_CAST(cv_r+0)));
|
|
_mm_storeu_si128(M128_CAST(cv_r+0), temp);
|
|
};
|
|
|
|
/* -------------------------------------------------------- *
|
|
* step function
|
|
* -------------------------------------------------------- */
|
|
|
|
template <unsigned int Alpha, unsigned int Beta>
|
|
inline void mix(lsh_u32 cv_l[8], lsh_u32 cv_r[8], const lsh_u32 const_v[8])
|
|
{
|
|
add_blk(cv_l, cv_r);
|
|
rotate_blk<Alpha>(cv_l);
|
|
xor_with_const(cv_l, const_v);
|
|
add_blk(cv_r, cv_l);
|
|
rotate_blk<Beta>(cv_r);
|
|
add_blk(cv_l, cv_r);
|
|
rotate_msg_gamma(cv_r);
|
|
}
|
|
|
|
/* -------------------------------------------------------- *
|
|
* compression function
|
|
* -------------------------------------------------------- */
|
|
|
|
inline void compress(LSH256_SSSE3_Context* ctx, const lsh_u8 pdMsgBlk[LSH256_MSG_BLK_BYTE_LEN])
|
|
{
|
|
CRYPTOPP_ASSERT(ctx != NULLPTR);
|
|
|
|
LSH256_SSSE3_Internal s_state(ctx->cv_l);
|
|
LSH256_SSSE3_Internal* i_state = &s_state;
|
|
|
|
const lsh_u32* const_v = NULL;
|
|
lsh_u32* cv_l = ctx->cv_l;
|
|
lsh_u32* cv_r = ctx->cv_r;
|
|
|
|
load_msg_blk(i_state, pdMsgBlk);
|
|
|
|
msg_add_even(cv_l, cv_r, i_state);
|
|
load_sc(&const_v, 0);
|
|
mix<ROT_EVEN_ALPHA, ROT_EVEN_BETA>(cv_l, cv_r, const_v);
|
|
word_perm(cv_l, cv_r);
|
|
|
|
msg_add_odd(cv_l, cv_r, i_state);
|
|
load_sc(&const_v, 8);
|
|
mix<ROT_ODD_ALPHA, ROT_ODD_BETA>(cv_l, cv_r, const_v);
|
|
word_perm(cv_l, cv_r);
|
|
|
|
for (size_t i = 1; i < NUM_STEPS / 2; i++)
|
|
{
|
|
msg_exp_even(i_state);
|
|
msg_add_even(cv_l, cv_r, i_state);
|
|
load_sc(&const_v, 16 * i);
|
|
mix<ROT_EVEN_ALPHA, ROT_EVEN_BETA>(cv_l, cv_r, const_v);
|
|
word_perm(cv_l, cv_r);
|
|
|
|
msg_exp_odd(i_state);
|
|
msg_add_odd(cv_l, cv_r, i_state);
|
|
load_sc(&const_v, 16 * i + 8);
|
|
mix<ROT_ODD_ALPHA, ROT_ODD_BETA>(cv_l, cv_r, const_v);
|
|
word_perm(cv_l, cv_r);
|
|
}
|
|
|
|
msg_exp_even(i_state);
|
|
msg_add_even(cv_l, cv_r, i_state);
|
|
}
|
|
|
|
/* -------------------------------------------------------- */
|
|
|
|
inline void load_iv(lsh_u32 cv_l[8], lsh_u32 cv_r[8], const lsh_u32 iv[16])
|
|
{
|
|
_mm_storeu_si128(M128_CAST(cv_l+ 0),
|
|
_mm_load_si128(CONST_M128_CAST(iv+ 0)));
|
|
_mm_storeu_si128(M128_CAST(cv_l+ 4),
|
|
_mm_load_si128(CONST_M128_CAST(iv+ 4)));
|
|
_mm_storeu_si128(M128_CAST(cv_r+ 0),
|
|
_mm_load_si128(CONST_M128_CAST(iv+ 8)));
|
|
_mm_storeu_si128(M128_CAST(cv_r+ 4),
|
|
_mm_load_si128(CONST_M128_CAST(iv+12)));
|
|
}
|
|
|
|
inline void zero_iv(lsh_u32 cv_l[8], lsh_u32 cv_r[8])
|
|
{
|
|
_mm_storeu_si128(M128_CAST(cv_l+0), _mm_setzero_si128());
|
|
_mm_storeu_si128(M128_CAST(cv_l+4), _mm_setzero_si128());
|
|
_mm_storeu_si128(M128_CAST(cv_r+0), _mm_setzero_si128());
|
|
_mm_storeu_si128(M128_CAST(cv_r+4), _mm_setzero_si128());
|
|
}
|
|
|
|
inline void zero_submsgs(LSH256_SSSE3_Context* ctx)
|
|
{
|
|
lsh_u32* sub_msgs = ctx->sub_msgs;
|
|
|
|
_mm_storeu_si128(M128_CAST(sub_msgs+ 0), _mm_setzero_si128());
|
|
_mm_storeu_si128(M128_CAST(sub_msgs+ 4), _mm_setzero_si128());
|
|
_mm_storeu_si128(M128_CAST(sub_msgs+ 8), _mm_setzero_si128());
|
|
_mm_storeu_si128(M128_CAST(sub_msgs+12), _mm_setzero_si128());
|
|
_mm_storeu_si128(M128_CAST(sub_msgs+16), _mm_setzero_si128());
|
|
_mm_storeu_si128(M128_CAST(sub_msgs+20), _mm_setzero_si128());
|
|
_mm_storeu_si128(M128_CAST(sub_msgs+24), _mm_setzero_si128());
|
|
_mm_storeu_si128(M128_CAST(sub_msgs+28), _mm_setzero_si128());
|
|
}
|
|
|
|
inline void init224(LSH256_SSSE3_Context* ctx)
|
|
{
|
|
CRYPTOPP_ASSERT(ctx != NULLPTR);
|
|
|
|
zero_submsgs(ctx);
|
|
load_iv(ctx->cv_l, ctx->cv_r, LSH256_IV224);
|
|
}
|
|
|
|
inline void init256(LSH256_SSSE3_Context* ctx)
|
|
{
|
|
CRYPTOPP_ASSERT(ctx != NULLPTR);
|
|
|
|
zero_submsgs(ctx);
|
|
load_iv(ctx->cv_l, ctx->cv_r, LSH256_IV256);
|
|
}
|
|
|
|
/* -------------------------------------------------------- */
|
|
|
|
inline void fin(LSH256_SSSE3_Context* ctx)
|
|
{
|
|
CRYPTOPP_ASSERT(ctx != NULLPTR);
|
|
|
|
_mm_storeu_si128(M128_CAST(ctx->cv_l+0), _mm_xor_si128(
|
|
_mm_loadu_si128(CONST_M128_CAST(ctx->cv_l+0)),
|
|
_mm_loadu_si128(CONST_M128_CAST(ctx->cv_r+0))));
|
|
_mm_storeu_si128(M128_CAST(ctx->cv_l+4), _mm_xor_si128(
|
|
_mm_loadu_si128(CONST_M128_CAST(ctx->cv_l+4)),
|
|
_mm_loadu_si128(CONST_M128_CAST(ctx->cv_r+4))));
|
|
}
|
|
|
|
/* -------------------------------------------------------- */
|
|
|
|
inline void get_hash(LSH256_SSSE3_Context* ctx, lsh_u8* pbHashVal)
|
|
{
|
|
CRYPTOPP_ASSERT(ctx != NULLPTR);
|
|
CRYPTOPP_ASSERT(ctx->alg_type != 0);
|
|
CRYPTOPP_ASSERT(pbHashVal != NULLPTR);
|
|
|
|
lsh_uint alg_type = ctx->alg_type;
|
|
lsh_uint hash_val_byte_len = LSH_GET_HASHBYTE(alg_type);
|
|
lsh_uint hash_val_bit_len = LSH_GET_SMALL_HASHBIT(alg_type);
|
|
|
|
// Multiplying by sizeof(lsh_u8) looks odd...
|
|
memcpy(pbHashVal, ctx->cv_l, hash_val_byte_len);
|
|
if (hash_val_bit_len){
|
|
pbHashVal[hash_val_byte_len-1] &= (((lsh_u8)0xff) << hash_val_bit_len);
|
|
}
|
|
}
|
|
|
|
/* -------------------------------------------------------- */
|
|
|
|
lsh_err lsh256_ssse3_init(LSH256_SSSE3_Context* ctx)
|
|
{
|
|
CRYPTOPP_ASSERT(ctx != NULLPTR);
|
|
CRYPTOPP_ASSERT(ctx->alg_type != 0);
|
|
|
|
lsh_u32 alg_type = ctx->alg_type;
|
|
const lsh_u32* const_v = NULL;
|
|
ctx->remain_databitlen = 0;
|
|
|
|
switch (alg_type)
|
|
{
|
|
case LSH_TYPE_256_256:
|
|
init256(ctx);
|
|
return LSH_SUCCESS;
|
|
case LSH_TYPE_256_224:
|
|
init224(ctx);
|
|
return LSH_SUCCESS;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
lsh_u32* cv_l = ctx->cv_l;
|
|
lsh_u32* cv_r = ctx->cv_r;
|
|
|
|
zero_iv(cv_l, cv_r);
|
|
cv_l[0] = LSH256_HASH_VAL_MAX_BYTE_LEN;
|
|
cv_l[1] = LSH_GET_HASHBIT(alg_type);
|
|
|
|
for (size_t i = 0; i < NUM_STEPS / 2; i++)
|
|
{
|
|
//Mix
|
|
load_sc(&const_v, i * 16);
|
|
mix<ROT_EVEN_ALPHA, ROT_EVEN_BETA>(cv_l, cv_r, const_v);
|
|
word_perm(cv_l, cv_r);
|
|
|
|
load_sc(&const_v, i * 16 + 8);
|
|
mix<ROT_ODD_ALPHA, ROT_ODD_BETA>(cv_l, cv_r, const_v);
|
|
word_perm(cv_l, cv_r);
|
|
}
|
|
|
|
return LSH_SUCCESS;
|
|
}
|
|
|
|
lsh_err lsh256_ssse3_update(LSH256_SSSE3_Context* ctx, const lsh_u8* data, size_t databitlen)
|
|
{
|
|
CRYPTOPP_ASSERT(ctx != NULLPTR);
|
|
CRYPTOPP_ASSERT(data != NULLPTR);
|
|
CRYPTOPP_ASSERT(databitlen % 8 == 0);
|
|
CRYPTOPP_ASSERT(ctx->alg_type != 0);
|
|
|
|
if (databitlen == 0){
|
|
return LSH_SUCCESS;
|
|
}
|
|
|
|
// We are byte oriented. tail bits will always be 0.
|
|
size_t databytelen = databitlen >> 3;
|
|
// lsh_uint pos2 = databitlen & 0x7;
|
|
const size_t pos2 = 0;
|
|
|
|
size_t remain_msg_byte = ctx->remain_databitlen >> 3;
|
|
// lsh_uint remain_msg_bit = ctx->remain_databitlen & 7;
|
|
const size_t remain_msg_bit = 0;
|
|
|
|
if (remain_msg_byte >= LSH256_MSG_BLK_BYTE_LEN){
|
|
return LSH_ERR_INVALID_STATE;
|
|
}
|
|
if (remain_msg_bit > 0){
|
|
return LSH_ERR_INVALID_DATABITLEN;
|
|
}
|
|
|
|
if (databytelen + remain_msg_byte < LSH256_MSG_BLK_BYTE_LEN)
|
|
{
|
|
memcpy(ctx->last_block + remain_msg_byte, data, databytelen);
|
|
ctx->remain_databitlen += (lsh_uint)databitlen;
|
|
remain_msg_byte += (lsh_uint)databytelen;
|
|
if (pos2){
|
|
ctx->last_block[remain_msg_byte] = data[databytelen] & ((0xff >> pos2) ^ 0xff);
|
|
}
|
|
return LSH_SUCCESS;
|
|
}
|
|
|
|
if (remain_msg_byte > 0){
|
|
size_t more_byte = LSH256_MSG_BLK_BYTE_LEN - remain_msg_byte;
|
|
memcpy(ctx->last_block + remain_msg_byte, data, more_byte);
|
|
compress(ctx, ctx->last_block);
|
|
data += more_byte;
|
|
databytelen -= more_byte;
|
|
remain_msg_byte = 0;
|
|
ctx->remain_databitlen = 0;
|
|
}
|
|
|
|
while (databytelen >= LSH256_MSG_BLK_BYTE_LEN)
|
|
{
|
|
// This call to compress caused some trouble.
|
|
// The data pointer can become unaligned in the
|
|
// previous block.
|
|
compress(ctx, data);
|
|
data += LSH256_MSG_BLK_BYTE_LEN;
|
|
databytelen -= LSH256_MSG_BLK_BYTE_LEN;
|
|
}
|
|
|
|
if (databytelen > 0){
|
|
memcpy(ctx->last_block, data, databytelen);
|
|
ctx->remain_databitlen = (lsh_uint)(databytelen << 3);
|
|
}
|
|
|
|
if (pos2){
|
|
ctx->last_block[databytelen] = data[databytelen] & ((0xff >> pos2) ^ 0xff);
|
|
ctx->remain_databitlen += pos2;
|
|
}
|
|
|
|
return LSH_SUCCESS;
|
|
}
|
|
|
|
lsh_err lsh256_ssse3_final(LSH256_SSSE3_Context* ctx, lsh_u8* hashval)
|
|
{
|
|
CRYPTOPP_ASSERT(ctx != NULLPTR);
|
|
CRYPTOPP_ASSERT(hashval != NULLPTR);
|
|
|
|
// We are byte oriented. tail bits will always be 0.
|
|
size_t remain_msg_byte = ctx->remain_databitlen >> 3;
|
|
// lsh_uint remain_msg_bit = ctx->remain_databitlen & 7;
|
|
const size_t remain_msg_bit = 0;
|
|
|
|
if (remain_msg_byte >= LSH256_MSG_BLK_BYTE_LEN){
|
|
return LSH_ERR_INVALID_STATE;
|
|
}
|
|
|
|
if (remain_msg_bit){
|
|
ctx->last_block[remain_msg_byte] |= (0x1 << (7 - remain_msg_bit));
|
|
}
|
|
else{
|
|
ctx->last_block[remain_msg_byte] = 0x80;
|
|
}
|
|
memset(ctx->last_block + remain_msg_byte + 1, 0, LSH256_MSG_BLK_BYTE_LEN - remain_msg_byte - 1);
|
|
|
|
compress(ctx, ctx->last_block);
|
|
|
|
fin(ctx);
|
|
get_hash(ctx, hashval);
|
|
|
|
return LSH_SUCCESS;
|
|
}
|
|
|
|
ANONYMOUS_NAMESPACE_END // Anonymous
|
|
|
|
NAMESPACE_BEGIN(CryptoPP)
|
|
|
|
extern
|
|
void LSH256_Base_Restart_SSSE3(word32* state)
|
|
{
|
|
state[RemainingBits] = 0;
|
|
LSH256_SSSE3_Context ctx(state, state[AlgorithmType], state[RemainingBits]);
|
|
lsh_err err = lsh256_ssse3_init(&ctx);
|
|
|
|
if (err != LSH_SUCCESS)
|
|
throw Exception(Exception::OTHER_ERROR, "LSH256_Base: lsh256_ssse3_init failed");
|
|
}
|
|
|
|
extern
|
|
void LSH256_Base_Update_SSSE3(word32* state, const byte *input, size_t size)
|
|
{
|
|
LSH256_SSSE3_Context ctx(state, state[AlgorithmType], state[RemainingBits]);
|
|
lsh_err err = lsh256_ssse3_update(&ctx, input, 8*size);
|
|
|
|
if (err != LSH_SUCCESS)
|
|
throw Exception(Exception::OTHER_ERROR, "LSH256_Base: lsh256_ssse3_update failed");
|
|
}
|
|
|
|
extern
|
|
void LSH256_Base_TruncatedFinal_SSSE3(word32* state, byte *hash, size_t)
|
|
{
|
|
LSH256_SSSE3_Context ctx(state, state[AlgorithmType], state[RemainingBits]);
|
|
lsh_err err = lsh256_ssse3_final(&ctx, hash);
|
|
|
|
if (err != LSH_SUCCESS)
|
|
throw Exception(Exception::OTHER_ERROR, "LSH256_Base: lsh256_ssse3_final failed");
|
|
}
|
|
|
|
NAMESPACE_END
|
|
|
|
#endif // CRYPTOPP_SSSE3_AVAILABLE
|