diff options
Diffstat (limited to 'src/pkg/crypto/sha256/sha256block.go')
| -rw-r--r-- | src/pkg/crypto/sha256/sha256block.go | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/src/pkg/crypto/sha256/sha256block.go b/src/pkg/crypto/sha256/sha256block.go index 7b0f55444..2ac49100a 100644 --- a/src/pkg/crypto/sha256/sha256block.go +++ b/src/pkg/crypto/sha256/sha256block.go @@ -75,11 +75,10 @@ var _K = []uint32{ 0xc67178f2, } -func _Block(dig *digest, p []byte) int { +func block(dig *digest, p []byte) { var w [64]uint32 - n := 0 h0, h1, h2, h3, h4, h5, h6, h7 := dig.h[0], dig.h[1], dig.h[2], dig.h[3], dig.h[4], dig.h[5], dig.h[6], dig.h[7] - for len(p) >= _Chunk { + for len(p) >= chunk { // Can interlace the computation of w with the // rounds below if needed for speed. for i := 0; i < 16; i++ { @@ -87,10 +86,10 @@ func _Block(dig *digest, p []byte) int { w[i] = uint32(p[j])<<24 | uint32(p[j+1])<<16 | uint32(p[j+2])<<8 | uint32(p[j+3]) } for i := 16; i < 64; i++ { - t1 := (w[i-2]>>17 | w[i-2]<<(32-17)) ^ (w[i-2]>>19 | w[i-2]<<(32-19)) ^ (w[i-2] >> 10) - - t2 := (w[i-15]>>7 | w[i-15]<<(32-7)) ^ (w[i-15]>>18 | w[i-15]<<(32-18)) ^ (w[i-15] >> 3) - + v1 := w[i-2] + t1 := (v1>>17 | v1<<(32-17)) ^ (v1>>19 | v1<<(32-19)) ^ (v1 >> 10) + v2 := w[i-15] + t2 := (v2>>7 | v2<<(32-7)) ^ (v2>>18 | v2<<(32-18)) ^ (v2 >> 3) w[i] = t1 + w[i-7] + t2 + w[i-16] } @@ -120,10 +119,8 @@ func _Block(dig *digest, p []byte) int { h6 += g h7 += h - p = p[_Chunk:] - n += _Chunk + p = p[chunk:] } dig.h[0], dig.h[1], dig.h[2], dig.h[3], dig.h[4], dig.h[5], dig.h[6], dig.h[7] = h0, h1, h2, h3, h4, h5, h6, h7 - return n } |