static void sha256_transform(uint32_t *h, uint32_t *w, const uint8_t *m, size_t nb)
{
uint32_t *wv, *tw, t1, t2;
const uint8_t *sub;
size_t i, j;
wv = w + 64;
for(i = 0; i < nb; i++) {
sub = m + (i * 64);
w[ 0] = PACK32LE(sub ); w[ 1] = PACK32LE(sub + 4);
w[ 2] = PACK32LE(sub + 8); w[ 3] = PACK32LE(sub + 12);
w[ 4] = PACK32LE(sub + 16); w[ 5] = PACK32LE(sub + 20);
w[ 6] = PACK32LE(sub + 24); w[ 7] = PACK32LE(sub + 28);
w[ 8] = PACK32LE(sub + 32); w[ 9] = PACK32LE(sub + 36);
w[10] = PACK32LE(sub + 40); w[11] = PACK32LE(sub + 44);
w[12] = PACK32LE(sub + 48); w[13] = PACK32LE(sub + 52);
w[14] = PACK32LE(sub + 56); w[15] = PACK32LE(sub + 60);
for(j = 16; j < 64; j++)
SHA256_SCR(j);
for(j = 0; j < 64; j++)
w[j] += sha256_k[j];
wv[0] = h[0]; wv[1] = h[1];
wv[2] = h[2]; wv[3] = h[3];
wv[4] = h[4]; wv[5] = h[5];
wv[6] = h[6]; wv[7] = h[7];
tw = w;
for(j = 0; j < 64; j += 8, tw += 8) {
SHA256_EXP(0,1,2,3,4,5,6,7, 0);
SHA256_EXP(7,0,1,2,3,4,5,6, 1);
SHA256_EXP(6,7,0,1,2,3,4,5, 2);
SHA256_EXP(5,6,7,0,1,2,3,4, 3);
SHA256_EXP(4,5,6,7,0,1,2,3, 4);
SHA256_EXP(3,4,5,6,7,0,1,2, 5);
SHA256_EXP(2,3,4,5,6,7,0,1, 6);
SHA256_EXP(1,2,3,4,5,6,7,0, 7);
}
h[0] += wv[0]; h[1] += wv[1];
h[2] += wv[2]; h[3] += wv[3];
h[4] += wv[4]; h[5] += wv[5];
h[6] += wv[6]; h[7] += wv[7];
}
}
static void sha256_transf( sha256_ctx * ctx, const unsigned char * message,
unsigned int block_nb )
{
uint32 w[ 64 ];
uint32 wv[ 8 ];
uint32 t1, t2;
const unsigned char * sub_block;
int i;
#ifndef UNROLL_LOOPS
int j;
#endif
for( i = 0; i < ( int ) block_nb; i++ )
{
sub_block = message + ( i << 6 );
#ifndef UNROLL_LOOPS
for( j = 0; j < 16; j++ )
{
PACK32( &sub_block[ j << 2 ], &w[ j ] );
}
for( j = 16; j < 64; j++ )
{
SHA256_SCR( j );
}
for( j = 0; j < 8; j++ )
{
wv[ j ] = ctx->h[ j ];
}
for( j = 0; j < 64; j++ )
{
t1 = wv[ 7 ] + SHA256_F2( wv[ 4 ] ) + CH( wv[ 4 ], wv[ 5 ], wv[ 6 ] )
+ sha256_k[ j ] + w[ j ];
t2 = SHA256_F1( wv[ 0 ] ) + 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++ )
{
ctx->h[ j ] += wv[ j ];
}
#else
PACK32( &sub_block[ 0 ], &w[ 0 ] ); PACK32( &sub_block[ 4 ], &w[ 1 ] );
PACK32( &sub_block[ 8 ], &w[ 2 ] ); PACK32( &sub_block[ 12 ], &w[ 3 ] );
PACK32( &sub_block[ 16 ], &w[ 4 ] ); PACK32( &sub_block[ 20 ], &w[ 5 ] );
PACK32( &sub_block[ 24 ], &w[ 6 ] ); PACK32( &sub_block[ 28 ], &w[ 7 ] );
PACK32( &sub_block[ 32 ], &w[ 8 ] ); PACK32( &sub_block[ 36 ], &w[ 9 ] );
PACK32( &sub_block[ 40 ], &w[ 10 ] ); PACK32( &sub_block[ 44 ], &w[ 11 ] );
PACK32( &sub_block[ 48 ], &w[ 12 ] ); PACK32( &sub_block[ 52 ], &w[ 13 ] );
PACK32( &sub_block[ 56 ], &w[ 14 ] ); PACK32( &sub_block[ 60 ], &w[ 15 ] );
SHA256_SCR( 16 ); SHA256_SCR( 17 ); SHA256_SCR( 18 ); SHA256_SCR( 19 );
SHA256_SCR( 20 ); SHA256_SCR( 21 ); SHA256_SCR( 22 ); SHA256_SCR( 23 );
SHA256_SCR( 24 ); SHA256_SCR( 25 ); SHA256_SCR( 26 ); SHA256_SCR( 27 );
SHA256_SCR( 28 ); SHA256_SCR( 29 ); SHA256_SCR( 30 ); SHA256_SCR( 31 );
SHA256_SCR( 32 ); SHA256_SCR( 33 ); SHA256_SCR( 34 ); SHA256_SCR( 35 );
SHA256_SCR( 36 ); SHA256_SCR( 37 ); SHA256_SCR( 38 ); SHA256_SCR( 39 );
SHA256_SCR( 40 ); SHA256_SCR( 41 ); SHA256_SCR( 42 ); SHA256_SCR( 43 );
SHA256_SCR( 44 ); SHA256_SCR( 45 ); SHA256_SCR( 46 ); SHA256_SCR( 47 );
SHA256_SCR( 48 ); SHA256_SCR( 49 ); SHA256_SCR( 50 ); SHA256_SCR( 51 );
SHA256_SCR( 52 ); SHA256_SCR( 53 ); SHA256_SCR( 54 ); SHA256_SCR( 55 );
SHA256_SCR( 56 ); SHA256_SCR( 57 ); SHA256_SCR( 58 ); SHA256_SCR( 59 );
SHA256_SCR( 60 ); SHA256_SCR( 61 ); SHA256_SCR( 62 ); SHA256_SCR( 63 );
wv[ 0 ] = ctx->h[ 0 ]; wv[ 1 ] = ctx->h[ 1 ];
wv[ 2 ] = ctx->h[ 2 ]; wv[ 3 ] = ctx->h[ 3 ];
wv[ 4 ] = ctx->h[ 4 ]; wv[ 5 ] = ctx->h[ 5 ];
wv[ 6 ] = ctx->h[ 6 ]; wv[ 7 ] = ctx->h[ 7 ];
SHA256_EXP( 0, 1, 2, 3, 4, 5, 6, 7, 0 ); SHA256_EXP( 7, 0, 1, 2, 3, 4, 5, 6, 1 );
SHA256_EXP( 6, 7, 0, 1, 2, 3, 4, 5, 2 ); SHA256_EXP( 5, 6, 7, 0, 1, 2, 3, 4, 3 );
SHA256_EXP( 4, 5, 6, 7, 0, 1, 2, 3, 4 ); SHA256_EXP( 3, 4, 5, 6, 7, 0, 1, 2, 5 );
SHA256_EXP( 2, 3, 4, 5, 6, 7, 0, 1, 6 ); SHA256_EXP( 1, 2, 3, 4, 5, 6, 7, 0, 7 );
SHA256_EXP( 0, 1, 2, 3, 4, 5, 6, 7, 8 ); SHA256_EXP( 7, 0, 1, 2, 3, 4, 5, 6, 9 );
SHA256_EXP( 6, 7, 0, 1, 2, 3, 4, 5, 10 ); SHA256_EXP( 5, 6, 7, 0, 1, 2, 3, 4, 11 );
SHA256_EXP( 4, 5, 6, 7, 0, 1, 2, 3, 12 ); SHA256_EXP( 3, 4, 5, 6, 7, 0, 1, 2, 13 );
SHA256_EXP( 2, 3, 4, 5, 6, 7, 0, 1, 14 ); SHA256_EXP( 1, 2, 3, 4, 5, 6, 7, 0, 15 );
SHA256_EXP( 0, 1, 2, 3, 4, 5, 6, 7, 16 ); SHA256_EXP( 7, 0, 1, 2, 3, 4, 5, 6, 17 );
SHA256_EXP( 6, 7, 0, 1, 2, 3, 4, 5, 18 ); SHA256_EXP( 5, 6, 7, 0, 1, 2, 3, 4, 19 );
SHA256_EXP( 4, 5, 6, 7, 0, 1, 2, 3, 20 ); SHA256_EXP( 3, 4, 5, 6, 7, 0, 1, 2, 21 );
SHA256_EXP( 2, 3, 4, 5, 6, 7, 0, 1, 22 ); SHA256_EXP( 1, 2, 3, 4, 5, 6, 7, 0, 23 );
SHA256_EXP( 0, 1, 2, 3, 4, 5, 6, 7, 24 ); SHA256_EXP( 7, 0, 1, 2, 3, 4, 5, 6, 25 );
SHA256_EXP( 6, 7, 0, 1, 2, 3, 4, 5, 26 ); SHA256_EXP( 5, 6, 7, 0, 1, 2, 3, 4, 27 );
SHA256_EXP( 4, 5, 6, 7, 0, 1, 2, 3, 28 ); SHA256_EXP( 3, 4, 5, 6, 7, 0, 1, 2, 29 );
SHA256_EXP( 2, 3, 4, 5, 6, 7, 0, 1, 30 ); SHA256_EXP( 1, 2, 3, 4, 5, 6, 7, 0, 31 );
SHA256_EXP( 0, 1, 2, 3, 4, 5, 6, 7, 32 ); SHA256_EXP( 7, 0, 1, 2, 3, 4, 5, 6, 33 );
SHA256_EXP( 6, 7, 0, 1, 2, 3, 4, 5, 34 ); SHA256_EXP( 5, 6, 7, 0, 1, 2, 3, 4, 35 );
SHA256_EXP( 4, 5, 6, 7, 0, 1, 2, 3, 36 ); SHA256_EXP( 3, 4, 5, 6, 7, 0, 1, 2, 37 );
SHA256_EXP( 2, 3, 4, 5, 6, 7, 0, 1, 38 ); SHA256_EXP( 1, 2, 3, 4, 5, 6, 7, 0, 39 );
SHA256_EXP( 0, 1, 2, 3, 4, 5, 6, 7, 40 ); SHA256_EXP( 7, 0, 1, 2, 3, 4, 5, 6, 41 );
SHA256_EXP( 6, 7, 0, 1, 2, 3, 4, 5, 42 ); SHA256_EXP( 5, 6, 7, 0, 1, 2, 3, 4, 43 );
SHA256_EXP( 4, 5, 6, 7, 0, 1, 2, 3, 44 ); SHA256_EXP( 3, 4, 5, 6, 7, 0, 1, 2, 45 );
SHA256_EXP( 2, 3, 4, 5, 6, 7, 0, 1, 46 ); SHA256_EXP( 1, 2, 3, 4, 5, 6, 7, 0, 47 );
SHA256_EXP( 0, 1, 2, 3, 4, 5, 6, 7, 48 ); SHA256_EXP( 7, 0, 1, 2, 3, 4, 5, 6, 49 );
SHA256_EXP( 6, 7, 0, 1, 2, 3, 4, 5, 50 ); SHA256_EXP( 5, 6, 7, 0, 1, 2, 3, 4, 51 );
SHA256_EXP( 4, 5, 6, 7, 0, 1, 2, 3, 52 ); SHA256_EXP( 3, 4, 5, 6, 7, 0, 1, 2, 53 );
SHA256_EXP( 2, 3, 4, 5, 6, 7, 0, 1, 54 ); SHA256_EXP( 1, 2, 3, 4, 5, 6, 7, 0, 55 );
SHA256_EXP( 0, 1, 2, 3, 4, 5, 6, 7, 56 ); SHA256_EXP( 7, 0, 1, 2, 3, 4, 5, 6, 57 );
SHA256_EXP( 6, 7, 0, 1, 2, 3, 4, 5, 58 ); SHA256_EXP( 5, 6, 7, 0, 1, 2, 3, 4, 59 );
SHA256_EXP( 4, 5, 6, 7, 0, 1, 2, 3, 60 ); SHA256_EXP( 3, 4, 5, 6, 7, 0, 1, 2, 61 );
SHA256_EXP( 2, 3, 4, 5, 6, 7, 0, 1, 62 ); SHA256_EXP( 1, 2, 3, 4, 5, 6, 7, 0, 63 );
ctx->h[ 0 ] += wv[ 0 ]; ctx->h[ 1 ] += wv[ 1 ];
ctx->h[ 2 ] += wv[ 2 ]; ctx->h[ 3 ] += wv[ 3 ];
ctx->h[ 4 ] += wv[ 4 ]; ctx->h[ 5 ] += wv[ 5 ];
ctx->h[ 6 ] += wv[ 6 ]; ctx->h[ 7 ] += wv[ 7 ];
#endif /* !UNROLL_LOOPS */
}
}