void SHA512::transform (const unsigned char *message, unsigned int block_nb) {
uint64 w[80];
uint64 wv[8];
uint64 t1, t2;
const unsigned char *sub_block;
int i, j;
for (i = 0; i < (int)block_nb; i++) {
sub_block = message + (i << 7);
for (j = 0; j < 16; j++) {
SHA2_PACK64(&sub_block[j << 3], &w[j]);
}
for (j = 16; j < 80; j++) {
w[j] = SHA512_F4(w[j - 2]) + w[j - 7] + SHA512_F3(w[j - 15]) + w[j - 16];
}
for (j = 0; j < 8; j++) {
wv[j] = m_h[j];
}
for (j = 0; j < 80; j++) {
t1 = wv[7] + SHA512_F2(wv[4]) + SHA2_CH(wv[4], wv[5], wv[6]) + sha512_k[j] + w[j];
t2 = SHA512_F1(wv[0]) + SHA2_MAJ(wv[0], wv[1], wv[2]);
wv[7] = wv[6];
wv[6] = wv[5];
wv[5] = wv[4];
wv[4] = wv[3] + t1;
wv[3] = wv[2];
wv[2] = wv[1];
wv[1] = wv[0];
wv[0] = t1 + t2;
}
for (j = 0; j < 8; j++) {
m_h[j] += wv[j];
}
}
}
void SHA256::transform(const SHA256::uint8 *message, unsigned int block_nb)
{
uint32 w[64];
uint32 wv[8];
uint32 t1, t2;
const SHA256::uint8 *sub_block;
int i;
int j;
for (i = 0; i < (int) block_nb; i++) {
sub_block = message + (i << 6);
for (j = 0; j < 16; j++) {
SHA2_PACK32(&sub_block[j << 2], &w[j]);
}
for (j = 16; j < 64; j++) {
w[j] = SHA256_F4(w[j - 2]) + w[j - 7] + SHA256_F3(w[j - 15]) + w[j - 16];
}
for (j = 0; j < 8; j++) {
wv[j] = m_h[j];
}
for (j = 0; j < 64; j++) {
t1 = wv[7] + SHA256_F2(wv[4]) + SHA2_CH(wv[4], wv[5], wv[6])
+ sha256_k[j] + w[j];
t2 = SHA256_F1(wv[0]) + SHA2_MAJ(wv[0], wv[1], wv[2]);
wv[7] = wv[6];
wv[6] = wv[5];
wv[5] = wv[4];
wv[4] = wv[3] + t1;
wv[3] = wv[2];
wv[2] = wv[1];
wv[1] = wv[0];
wv[0] = t1 + t2;
}
for (j = 0; j < 8; j++) {
m_h[j] += wv[j];
}
}
}
void SHA512_HashBlock (SHA512_CONTEXT * context)
{
uint64_t a, b, c, d, e, f, g, h;
uint8_t i;
uint64_t t1, t2;
uint8_t * dataPtr = context->partialBlock;;
uint64_t * schedulePtr;
#if defined (CRYPTO_HASH_CONFIG_SHA_SMALL_RAM)
uint8_t j;
#endif
schedulePtr = context->workingBuffer;
for (i = 0; i < 16; i++)
{
t1 = *dataPtr++;
t1 <<= 8;
t1 += *dataPtr++;
t1 <<= 8;
t1 += *dataPtr++;
t1 <<= 8;
t1 += *dataPtr++;
t1 <<= 8;
t1 += *dataPtr++;
t1 <<= 8;
t1 += *dataPtr++;
t1 <<= 8;
t1 += *dataPtr++;
t1 <<= 8;
t1 += *dataPtr++;
*(schedulePtr + i) = t1;
}
#if !defined (CRYPTO_HASH_CONFIG_SHA_SMALL_RAM)
for (i = 16; i < 80; i++)
{
schedulePtr = context->workingBuffer + i;
*schedulePtr = SHA2_SIG_L1(*(schedulePtr - 2)) + *(schedulePtr - 7) + SHA2_SIG_L0(*(schedulePtr - 15)) + *(schedulePtr - 16);
}
#endif
a = context->h[0];
b = context->h[1];
c = context->h[2];
d = context->h[3];
e = context->h[4];
f = context->h[5];
g = context->h[6];
h = context->h[7];
schedulePtr = context->workingBuffer;
for (i = 0; i < 80; i++)
{
#if defined (CRYPTO_HASH_CONFIG_SHA_SMALL_RAM)
j = i & 0xf;
if (i >= 16)
{
*(schedulePtr + j) = SHA2_SIG_L1(*(schedulePtr + ((14 + j) & 0xf))) + *(schedulePtr + ((9 + j) & 0xf)) + SHA2_SIG_L0(*(schedulePtr + ((1 + j) & 0xf))) + *(schedulePtr + j);
}
t1 = h + SHA2_SIG_U1(e) + SHA2_CH(e,f,g) + SHA512_K[i] + *(schedulePtr + j);
#else
t1 = h + SHA2_SIG_U1(e) + SHA2_CH(e,f,g) + SHA512_K[i] + *(schedulePtr + i);
#endif
t2 = SHA2_SIG_U0(a) + SHA2_MAJ(a,b,c);
h = g;
g = f;
f = e;
e = d + t1;
d = c;
c = b;
b = a;
a = t1 + t2;
}
context->h[0] += a;
context->h[1] += b;
context->h[2] += c;
context->h[3] += d;
context->h[4] += e;
context->h[5] += f;
context->h[6] += g;
context->h[7] += h;
}
