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492 lines (406 loc) · 10.9 KB
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/* Sha256.c -- SHA-256 Hash
: Igor Pavlov : Public domain
This code is based on public domain code from Wei Dai's Crypto++ library. */
#include "Precomp.h"
#include <string.h>
#include "Sha256.h"
#include "RotateDefs.h"
#include "CpuArch.h"
#ifdef MY_CPU_X86_OR_AMD64
#if defined(Z7_LLVM_CLANG_VERSION) && (Z7_LLVM_CLANG_VERSION >= 30800) \
|| defined(Z7_APPLE_CLANG_VERSION) && (Z7_APPLE_CLANG_VERSION >= 50100) \
|| defined(Z7_GCC_VERSION) && (Z7_GCC_VERSION >= 40900) \
|| defined(__INTEL_COMPILER) && (__INTEL_COMPILER >= 1600) \
|| defined(_MSC_VER) && (_MSC_VER >= 1200)
#define Z7_COMPILER_SHA256_SUPPORTED
#endif
#elif defined(MY_CPU_ARM_OR_ARM64) && defined(MY_CPU_LE)
#if defined(__ARM_FEATURE_SHA2) \
|| defined(__ARM_FEATURE_CRYPTO)
#define Z7_COMPILER_SHA256_SUPPORTED
#else
#if defined(MY_CPU_ARM64) \
|| defined(__ARM_ARCH) && (__ARM_ARCH >= 4) \
|| defined(Z7_MSC_VER_ORIGINAL)
#if defined(__ARM_FP) && \
( defined(Z7_CLANG_VERSION) && (Z7_CLANG_VERSION >= 30800) \
|| defined(__GNUC__) && (__GNUC__ >= 6) \
) \
|| defined(Z7_MSC_VER_ORIGINAL) && (_MSC_VER >= 1910)
#if defined(MY_CPU_ARM64) \
|| !defined(Z7_CLANG_VERSION) \
|| defined(__ARM_NEON) && \
(Z7_CLANG_VERSION < 170000 || \
Z7_CLANG_VERSION > 170001)
#define Z7_COMPILER_SHA256_SUPPORTED
#endif
#endif
#endif
#endif
#endif
void Z7_FASTCALL Sha256_UpdateBlocks(UInt32 state[8], const Byte *data, size_t numBlocks);
#ifdef Z7_COMPILER_SHA256_SUPPORTED
void Z7_FASTCALL Sha256_UpdateBlocks_HW(UInt32 state[8], const Byte *data, size_t numBlocks);
static SHA256_FUNC_UPDATE_BLOCKS g_SHA256_FUNC_UPDATE_BLOCKS = Sha256_UpdateBlocks;
static SHA256_FUNC_UPDATE_BLOCKS g_SHA256_FUNC_UPDATE_BLOCKS_HW;
#define SHA256_UPDATE_BLOCKS(p) p->v.vars.func_UpdateBlocks
#else
#define SHA256_UPDATE_BLOCKS(p) Sha256_UpdateBlocks
#endif
BoolInt Sha256_SetFunction(CSha256 *p, unsigned algo)
{
SHA256_FUNC_UPDATE_BLOCKS func = Sha256_UpdateBlocks;
#ifdef Z7_COMPILER_SHA256_SUPPORTED
if (algo != SHA256_ALGO_SW)
{
if (algo == SHA256_ALGO_DEFAULT)
func = g_SHA256_FUNC_UPDATE_BLOCKS;
else
{
if (algo != SHA256_ALGO_HW)
return False;
func = g_SHA256_FUNC_UPDATE_BLOCKS_HW;
if (!func)
return False;
}
}
#else
if (algo > 1)
return False;
#endif
p->v.vars.func_UpdateBlocks = func;
return True;
}
/* define it for speed optimization */
#ifdef Z7_SFX
#define STEP_PRE 1
#define STEP_MAIN 1
#else
#define STEP_PRE 2
#define STEP_MAIN 4
// #define Z7_SHA256_UNROLL
#endif
#undef Z7_SHA256_BIG_W
#if STEP_MAIN != 16
#define Z7_SHA256_BIG_W
#endif
void Sha256_InitState(CSha256 *p)
{
p->v.vars.count = 0;
p->state[0] = 0x6a09e667;
p->state[1] = 0xbb67ae85;
p->state[2] = 0x3c6ef372;
p->state[3] = 0xa54ff53a;
p->state[4] = 0x510e527f;
p->state[5] = 0x9b05688c;
p->state[6] = 0x1f83d9ab;
p->state[7] = 0x5be0cd19;
}
void Sha256_Init(CSha256 *p)
{
p->v.vars.func_UpdateBlocks =
#ifdef Z7_COMPILER_SHA256_SUPPORTED
g_SHA256_FUNC_UPDATE_BLOCKS;
#else
NULL;
#endif
Sha256_InitState(p);
}
#define S0(x) (rotrFixed(x, 2) ^ rotrFixed(x,13) ^ rotrFixed(x,22))
#define S1(x) (rotrFixed(x, 6) ^ rotrFixed(x,11) ^ rotrFixed(x,25))
#define s0(x) (rotrFixed(x, 7) ^ rotrFixed(x,18) ^ (x >> 3))
#define s1(x) (rotrFixed(x,17) ^ rotrFixed(x,19) ^ (x >>10))
#define Ch(x,y,z) (z^(x&(y^z)))
#define Maj(x,y,z) ((x&y)|(z&(x|y)))
#define W_PRE(i) (W[(i) + (size_t)(j)] = GetBe32(data + ((size_t)(j) + i) * 4))
#define blk2_main(j, i) s1(w(j, (i)-2)) + w(j, (i)-7) + s0(w(j, (i)-15))
#ifdef Z7_SHA256_BIG_W
// we use +i instead of +(i) to change the order to solve CLANG compiler warning for signed/unsigned.
#define w(j, i) W[(size_t)(j) + i]
#define blk2(j, i) (w(j, i) = w(j, (i)-16) + blk2_main(j, i))
#else
#if STEP_MAIN == 16
#define w(j, i) W[(i) & 15]
#else
#define w(j, i) W[((size_t)(j) + (i)) & 15]
#endif
#define blk2(j, i) (w(j, i) += blk2_main(j, i))
#endif
#define W_MAIN(i) blk2(j, i)
#define T1(wx, i) \
tmp = h + S1(e) + Ch(e,f,g) + K[(i)+(size_t)(j)] + wx(i); \
h = g; \
g = f; \
f = e; \
e = d + tmp; \
tmp += S0(a) + Maj(a, b, c); \
d = c; \
c = b; \
b = a; \
a = tmp; \
#define R1_PRE(i) T1( W_PRE, i)
#define R1_MAIN(i) T1( W_MAIN, i)
#if (!defined(Z7_SHA256_UNROLL) || STEP_MAIN < 8) && (STEP_MAIN >= 4)
#define R2_MAIN(i) \
R1_MAIN(i) \
R1_MAIN(i + 1) \
#endif
#if defined(Z7_SHA256_UNROLL) && STEP_MAIN >= 8
#define T4( a,b,c,d,e,f,g,h, wx, i) \
h += S1(e) + Ch(e,f,g) + K[(i)+(size_t)(j)] + wx(i); \
tmp = h; \
h += d; \
d = tmp + S0(a) + Maj(a, b, c); \
#define R4( wx, i) \
T4 ( a,b,c,d,e,f,g,h, wx, (i )); \
T4 ( d,a,b,c,h,e,f,g, wx, (i+1)); \
T4 ( c,d,a,b,g,h,e,f, wx, (i+2)); \
T4 ( b,c,d,a,f,g,h,e, wx, (i+3)); \
#define R4_PRE(i) R4( W_PRE, i)
#define R4_MAIN(i) R4( W_MAIN, i)
#define T8( a,b,c,d,e,f,g,h, wx, i) \
h += S1(e) + Ch(e,f,g) + K[(i)+(size_t)(j)] + wx(i); \
d += h; \
h += S0(a) + Maj(a, b, c); \
#define R8( wx, i) \
T8 ( a,b,c,d,e,f,g,h, wx, i ); \
T8 ( h,a,b,c,d,e,f,g, wx, i+1); \
T8 ( g,h,a,b,c,d,e,f, wx, i+2); \
T8 ( f,g,h,a,b,c,d,e, wx, i+3); \
T8 ( e,f,g,h,a,b,c,d, wx, i+4); \
T8 ( d,e,f,g,h,a,b,c, wx, i+5); \
T8 ( c,d,e,f,g,h,a,b, wx, i+6); \
T8 ( b,c,d,e,f,g,h,a, wx, i+7); \
#define R8_PRE(i) R8( W_PRE, i)
#define R8_MAIN(i) R8( W_MAIN, i)
#endif
extern
MY_ALIGN(64) const UInt32 SHA256_K_ARRAY[64];
MY_ALIGN(64) const UInt32 SHA256_K_ARRAY[64] = {
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
};
#define K SHA256_K_ARRAY
Z7_NO_INLINE
void Z7_FASTCALL Sha256_UpdateBlocks(UInt32 state[8], const Byte *data, size_t numBlocks)
{
UInt32 W
#ifdef Z7_SHA256_BIG_W
[64];
#else
[16];
#endif
unsigned j;
UInt32 a,b,c,d,e,f,g,h;
#if !defined(Z7_SHA256_UNROLL) || (STEP_MAIN <= 4) || (STEP_PRE <= 4)
UInt32 tmp;
#endif
if (numBlocks == 0) return;
a = state[0];
b = state[1];
c = state[2];
d = state[3];
e = state[4];
f = state[5];
g = state[6];
h = state[7];
do
{
for (j = 0; j < 16; j += STEP_PRE)
{
#if STEP_PRE > 4
#if STEP_PRE < 8
R4_PRE(0);
#else
R8_PRE(0);
#if STEP_PRE == 16
R8_PRE(8);
#endif
#endif
#else
R1_PRE(0)
#if STEP_PRE >= 2
R1_PRE(1)
#if STEP_PRE >= 4
R1_PRE(2)
R1_PRE(3)
#endif
#endif
#endif
}
for (j = 16; j < 64; j += STEP_MAIN)
{
#if defined(Z7_SHA256_UNROLL) && STEP_MAIN >= 8
#if STEP_MAIN < 8
R4_MAIN(0)
#else
R8_MAIN(0)
#if STEP_MAIN == 16
R8_MAIN(8)
#endif
#endif
#else
R1_MAIN(0)
#if STEP_MAIN >= 2
R1_MAIN(1)
#if STEP_MAIN >= 4
R2_MAIN(2)
#if STEP_MAIN >= 8
R2_MAIN(4)
R2_MAIN(6)
#if STEP_MAIN >= 16
R2_MAIN(8)
R2_MAIN(10)
R2_MAIN(12)
R2_MAIN(14)
#endif
#endif
#endif
#endif
#endif
}
a += state[0]; state[0] = a;
b += state[1]; state[1] = b;
c += state[2]; state[2] = c;
d += state[3]; state[3] = d;
e += state[4]; state[4] = e;
f += state[5]; state[5] = f;
g += state[6]; state[6] = g;
h += state[7]; state[7] = h;
data += SHA256_BLOCK_SIZE;
}
while (--numBlocks);
}
#define Sha256_UpdateBlock(p) SHA256_UPDATE_BLOCKS(p)(p->state, p->buffer, 1)
void Sha256_Update(CSha256 *p, const Byte *data, size_t size)
{
if (size == 0)
return;
{
const unsigned pos = (unsigned)p->v.vars.count & (SHA256_BLOCK_SIZE - 1);
const unsigned num = SHA256_BLOCK_SIZE - pos;
p->v.vars.count += size;
if (num > size)
{
memcpy(p->buffer + pos, data, size);
return;
}
if (pos != 0)
{
size -= num;
memcpy(p->buffer + pos, data, num);
data += num;
Sha256_UpdateBlock(p);
}
}
{
const size_t numBlocks = size >> 6;
// if (numBlocks)
SHA256_UPDATE_BLOCKS(p)(p->state, data, numBlocks);
size &= SHA256_BLOCK_SIZE - 1;
if (size == 0)
return;
data += (numBlocks << 6);
memcpy(p->buffer, data, size);
}
}
void Sha256_Final(CSha256 *p, Byte *digest)
{
unsigned pos = (unsigned)p->v.vars.count & (SHA256_BLOCK_SIZE - 1);
p->buffer[pos++] = 0x80;
if (pos > (SHA256_BLOCK_SIZE - 4 * 2))
{
while (pos != SHA256_BLOCK_SIZE) { p->buffer[pos++] = 0; }
// memset(&p->buf.buffer[pos], 0, SHA256_BLOCK_SIZE - pos);
Sha256_UpdateBlock(p);
pos = 0;
}
memset(&p->buffer[pos], 0, (SHA256_BLOCK_SIZE - 4 * 2) - pos);
{
const UInt64 numBits = p->v.vars.count << 3;
SetBe32(p->buffer + SHA256_BLOCK_SIZE - 4 * 2, (UInt32)(numBits >> 32))
SetBe32(p->buffer + SHA256_BLOCK_SIZE - 4 * 1, (UInt32)(numBits))
}
Sha256_UpdateBlock(p);
#if 1 && defined(MY_CPU_BE)
memcpy(digest, p->state, SHA256_DIGEST_SIZE);
#else
{
unsigned i;
for (i = 0; i < 8; i += 2)
{
const UInt32 v0 = p->state[i];
const UInt32 v1 = p->state[(size_t)i + 1];
SetBe32(digest , v0)
SetBe32(digest + 4, v1)
digest += 4 * 2;
}
}
#endif
Sha256_InitState(p);
}
void Sha256Prepare(void)
{
#ifdef Z7_COMPILER_SHA256_SUPPORTED
SHA256_FUNC_UPDATE_BLOCKS f, f_hw;
f = Sha256_UpdateBlocks;
f_hw = NULL;
#ifdef MY_CPU_X86_OR_AMD64
if (CPU_IsSupported_SHA()
&& CPU_IsSupported_SSSE3()
)
#else
if (CPU_IsSupported_SHA2())
#endif
{
// printf("\n========== HW SHA256 ======== \n");
f = f_hw = Sha256_UpdateBlocks_HW;
}
g_SHA256_FUNC_UPDATE_BLOCKS = f;
g_SHA256_FUNC_UPDATE_BLOCKS_HW = f_hw;
#endif
}
#undef U64C
#undef K
#undef S0
#undef S1
#undef s0
#undef s1
#undef Ch
#undef Maj
#undef W_MAIN
#undef W_PRE
#undef w
#undef blk2_main
#undef blk2
#undef T1
#undef T4
#undef T8
#undef R1_PRE
#undef R1_MAIN
#undef R2_MAIN
#undef R4
#undef R4_PRE
#undef R4_MAIN
#undef R8
#undef R8_PRE
#undef R8_MAIN
#undef STEP_PRE
#undef STEP_MAIN
#undef Z7_SHA256_BIG_W
#undef Z7_SHA256_UNROLL
#undef Z7_COMPILER_SHA256_SUPPORTED