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sha1-x86.c
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/* sha1-x86.c - Intel SHA extensions using C intrinsics */
/* Written and place in public domain by Jeffrey Walton */
/* Based on code from Intel, and by Sean Gulley for */
/* the miTLS project. */
/* gcc -DTEST_MAIN -msse4.1 -msha sha1-x86.c -o sha1.exe */
/* Include the GCC super header */
#if defined(__GNUC__)
# include <stdint.h>
# include <x86intrin.h>
#endif
/* Microsoft supports Intel SHA ACLE extensions as of Visual Studio 2015 */
#if defined(_MSC_VER)
# include <immintrin.h>
# define WIN32_LEAN_AND_MEAN
# include <Windows.h>
typedef UINT32 uint32_t;
typedef UINT8 uint8_t;
#endif
/* Process multiple blocks. The caller is responsible for setting the initial */
/* state, and the caller is responsible for padding the final block. */
void sha1_process_x86(uint32_t state[5], const uint8_t data[], uint32_t length)
{
__m128i ABCD, ABCD_SAVE, E0, E0_SAVE, E1;
__m128i MSG0, MSG1, MSG2, MSG3;
const __m128i MASK = _mm_set_epi64x(0x0001020304050607ULL, 0x08090a0b0c0d0e0fULL);
/* Load initial values */
ABCD = _mm_loadu_si128((const __m128i*) state);
E0 = _mm_set_epi32(state[4], 0, 0, 0);
ABCD = _mm_shuffle_epi32(ABCD, 0x1B);
while (length >= 64)
{
/* Save current state */
ABCD_SAVE = ABCD;
E0_SAVE = E0;
/* Rounds 0-3 */
MSG0 = _mm_loadu_si128((const __m128i*)(data + 0));
MSG0 = _mm_shuffle_epi8(MSG0, MASK);
E0 = _mm_add_epi32(E0, MSG0);
E1 = ABCD;
ABCD = _mm_sha1rnds4_epu32(ABCD, E0, 0);
/* Rounds 4-7 */
MSG1 = _mm_loadu_si128((const __m128i*)(data + 16));
MSG1 = _mm_shuffle_epi8(MSG1, MASK);
E1 = _mm_sha1nexte_epu32(E1, MSG1);
E0 = ABCD;
ABCD = _mm_sha1rnds4_epu32(ABCD, E1, 0);
MSG0 = _mm_sha1msg1_epu32(MSG0, MSG1);
/* Rounds 8-11 */
MSG2 = _mm_loadu_si128((const __m128i*)(data + 32));
MSG2 = _mm_shuffle_epi8(MSG2, MASK);
E0 = _mm_sha1nexte_epu32(E0, MSG2);
E1 = ABCD;
ABCD = _mm_sha1rnds4_epu32(ABCD, E0, 0);
MSG1 = _mm_sha1msg1_epu32(MSG1, MSG2);
MSG0 = _mm_xor_si128(MSG0, MSG2);
/* Rounds 12-15 */
MSG3 = _mm_loadu_si128((const __m128i*)(data + 48));
MSG3 = _mm_shuffle_epi8(MSG3, MASK);
E1 = _mm_sha1nexte_epu32(E1, MSG3);
E0 = ABCD;
MSG0 = _mm_sha1msg2_epu32(MSG0, MSG3);
ABCD = _mm_sha1rnds4_epu32(ABCD, E1, 0);
MSG2 = _mm_sha1msg1_epu32(MSG2, MSG3);
MSG1 = _mm_xor_si128(MSG1, MSG3);
/* Rounds 16-19 */
E0 = _mm_sha1nexte_epu32(E0, MSG0);
E1 = ABCD;
MSG1 = _mm_sha1msg2_epu32(MSG1, MSG0);
ABCD = _mm_sha1rnds4_epu32(ABCD, E0, 0);
MSG3 = _mm_sha1msg1_epu32(MSG3, MSG0);
MSG2 = _mm_xor_si128(MSG2, MSG0);
/* Rounds 20-23 */
E1 = _mm_sha1nexte_epu32(E1, MSG1);
E0 = ABCD;
MSG2 = _mm_sha1msg2_epu32(MSG2, MSG1);
ABCD = _mm_sha1rnds4_epu32(ABCD, E1, 1);
MSG0 = _mm_sha1msg1_epu32(MSG0, MSG1);
MSG3 = _mm_xor_si128(MSG3, MSG1);
/* Rounds 24-27 */
E0 = _mm_sha1nexte_epu32(E0, MSG2);
E1 = ABCD;
MSG3 = _mm_sha1msg2_epu32(MSG3, MSG2);
ABCD = _mm_sha1rnds4_epu32(ABCD, E0, 1);
MSG1 = _mm_sha1msg1_epu32(MSG1, MSG2);
MSG0 = _mm_xor_si128(MSG0, MSG2);
/* Rounds 28-31 */
E1 = _mm_sha1nexte_epu32(E1, MSG3);
E0 = ABCD;
MSG0 = _mm_sha1msg2_epu32(MSG0, MSG3);
ABCD = _mm_sha1rnds4_epu32(ABCD, E1, 1);
MSG2 = _mm_sha1msg1_epu32(MSG2, MSG3);
MSG1 = _mm_xor_si128(MSG1, MSG3);
/* Rounds 32-35 */
E0 = _mm_sha1nexte_epu32(E0, MSG0);
E1 = ABCD;
MSG1 = _mm_sha1msg2_epu32(MSG1, MSG0);
ABCD = _mm_sha1rnds4_epu32(ABCD, E0, 1);
MSG3 = _mm_sha1msg1_epu32(MSG3, MSG0);
MSG2 = _mm_xor_si128(MSG2, MSG0);
/* Rounds 36-39 */
E1 = _mm_sha1nexte_epu32(E1, MSG1);
E0 = ABCD;
MSG2 = _mm_sha1msg2_epu32(MSG2, MSG1);
ABCD = _mm_sha1rnds4_epu32(ABCD, E1, 1);
MSG0 = _mm_sha1msg1_epu32(MSG0, MSG1);
MSG3 = _mm_xor_si128(MSG3, MSG1);
/* Rounds 40-43 */
E0 = _mm_sha1nexte_epu32(E0, MSG2);
E1 = ABCD;
MSG3 = _mm_sha1msg2_epu32(MSG3, MSG2);
ABCD = _mm_sha1rnds4_epu32(ABCD, E0, 2);
MSG1 = _mm_sha1msg1_epu32(MSG1, MSG2);
MSG0 = _mm_xor_si128(MSG0, MSG2);
/* Rounds 44-47 */
E1 = _mm_sha1nexte_epu32(E1, MSG3);
E0 = ABCD;
MSG0 = _mm_sha1msg2_epu32(MSG0, MSG3);
ABCD = _mm_sha1rnds4_epu32(ABCD, E1, 2);
MSG2 = _mm_sha1msg1_epu32(MSG2, MSG3);
MSG1 = _mm_xor_si128(MSG1, MSG3);
/* Rounds 48-51 */
E0 = _mm_sha1nexte_epu32(E0, MSG0);
E1 = ABCD;
MSG1 = _mm_sha1msg2_epu32(MSG1, MSG0);
ABCD = _mm_sha1rnds4_epu32(ABCD, E0, 2);
MSG3 = _mm_sha1msg1_epu32(MSG3, MSG0);
MSG2 = _mm_xor_si128(MSG2, MSG0);
/* Rounds 52-55 */
E1 = _mm_sha1nexte_epu32(E1, MSG1);
E0 = ABCD;
MSG2 = _mm_sha1msg2_epu32(MSG2, MSG1);
ABCD = _mm_sha1rnds4_epu32(ABCD, E1, 2);
MSG0 = _mm_sha1msg1_epu32(MSG0, MSG1);
MSG3 = _mm_xor_si128(MSG3, MSG1);
/* Rounds 56-59 */
E0 = _mm_sha1nexte_epu32(E0, MSG2);
E1 = ABCD;
MSG3 = _mm_sha1msg2_epu32(MSG3, MSG2);
ABCD = _mm_sha1rnds4_epu32(ABCD, E0, 2);
MSG1 = _mm_sha1msg1_epu32(MSG1, MSG2);
MSG0 = _mm_xor_si128(MSG0, MSG2);
/* Rounds 60-63 */
E1 = _mm_sha1nexte_epu32(E1, MSG3);
E0 = ABCD;
MSG0 = _mm_sha1msg2_epu32(MSG0, MSG3);
ABCD = _mm_sha1rnds4_epu32(ABCD, E1, 3);
MSG2 = _mm_sha1msg1_epu32(MSG2, MSG3);
MSG1 = _mm_xor_si128(MSG1, MSG3);
/* Rounds 64-67 */
E0 = _mm_sha1nexte_epu32(E0, MSG0);
E1 = ABCD;
MSG1 = _mm_sha1msg2_epu32(MSG1, MSG0);
ABCD = _mm_sha1rnds4_epu32(ABCD, E0, 3);
MSG3 = _mm_sha1msg1_epu32(MSG3, MSG0);
MSG2 = _mm_xor_si128(MSG2, MSG0);
/* Rounds 68-71 */
E1 = _mm_sha1nexte_epu32(E1, MSG1);
E0 = ABCD;
MSG2 = _mm_sha1msg2_epu32(MSG2, MSG1);
ABCD = _mm_sha1rnds4_epu32(ABCD, E1, 3);
MSG3 = _mm_xor_si128(MSG3, MSG1);
/* Rounds 72-75 */
E0 = _mm_sha1nexte_epu32(E0, MSG2);
E1 = ABCD;
MSG3 = _mm_sha1msg2_epu32(MSG3, MSG2);
ABCD = _mm_sha1rnds4_epu32(ABCD, E0, 3);
/* Rounds 76-79 */
E1 = _mm_sha1nexte_epu32(E1, MSG3);
E0 = ABCD;
ABCD = _mm_sha1rnds4_epu32(ABCD, E1, 3);
/* Combine state */
E0 = _mm_sha1nexte_epu32(E0, E0_SAVE);
ABCD = _mm_add_epi32(ABCD, ABCD_SAVE);
data += 64;
length -= 64;
}
/* Save state */
ABCD = _mm_shuffle_epi32(ABCD, 0x1B);
_mm_storeu_si128((__m128i*) state, ABCD);
state[4] = _mm_extract_epi32(E0, 3);
}
#if defined(TEST_MAIN)
#include <stdio.h>
#include <string.h>
int main(int argc, char* argv[])
{
/* empty message with padding */
uint8_t message[64];
memset(message, 0x00, sizeof(message));
message[0] = 0x80;
/* initial state */
uint32_t state[5] = {0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476, 0xC3D2E1F0};
sha1_process_x86(state, message, sizeof(message));
const uint8_t b1 = (uint8_t)(state[0] >> 24);
const uint8_t b2 = (uint8_t)(state[0] >> 16);
const uint8_t b3 = (uint8_t)(state[0] >> 8);
const uint8_t b4 = (uint8_t)(state[0] >> 0);
const uint8_t b5 = (uint8_t)(state[1] >> 24);
const uint8_t b6 = (uint8_t)(state[1] >> 16);
const uint8_t b7 = (uint8_t)(state[1] >> 8);
const uint8_t b8 = (uint8_t)(state[1] >> 0);
/* DA39A3EE5E6B4B0D... */
printf("SHA1 hash of empty message: ");
printf("%02X%02X%02X%02X%02X%02X%02X%02X...\n",
b1, b2, b3, b4, b5, b6, b7, b8);
int success = ((b1 == 0xDA) && (b2 == 0x39) && (b3 == 0xA3) && (b4 == 0xEE) &&
(b5 == 0x5E) && (b6 == 0x6B) && (b7 == 0x4B) && (b8 == 0x0D));
if (success)
printf("Success!\n");
else
printf("Failure!\n");
return (success != 0 ? 0 : 1);
}
#endif