diff options
Diffstat (limited to 'vendor/golang.org/x/crypto/scrypt/scrypt.go')
| -rw-r--r-- | vendor/golang.org/x/crypto/scrypt/scrypt.go | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/vendor/golang.org/x/crypto/scrypt/scrypt.go b/vendor/golang.org/x/crypto/scrypt/scrypt.go index 2f81fe4148..bbe4494c6c 100644 --- a/vendor/golang.org/x/crypto/scrypt/scrypt.go +++ b/vendor/golang.org/x/crypto/scrypt/scrypt.go @@ -9,6 +9,7 @@ package scrypt // import "golang.org/x/crypto/scrypt" import ( "crypto/sha256" + "encoding/binary" "errors" "math/bits" @@ -143,36 +144,34 @@ func integer(b []uint32, r int) uint64 { func smix(b []byte, r, N int, v, xy []uint32) { var tmp [16]uint32 + R := 32 * r x := xy - y := xy[32*r:] + y := xy[R:] j := 0 - for i := 0; i < 32*r; i++ { - x[i] = uint32(b[j]) | uint32(b[j+1])<<8 | uint32(b[j+2])<<16 | uint32(b[j+3])<<24 + for i := 0; i < R; i++ { + x[i] = binary.LittleEndian.Uint32(b[j:]) j += 4 } for i := 0; i < N; i += 2 { - blockCopy(v[i*(32*r):], x, 32*r) + blockCopy(v[i*R:], x, R) blockMix(&tmp, x, y, r) - blockCopy(v[(i+1)*(32*r):], y, 32*r) + blockCopy(v[(i+1)*R:], y, R) blockMix(&tmp, y, x, r) } for i := 0; i < N; i += 2 { j := int(integer(x, r) & uint64(N-1)) - blockXOR(x, v[j*(32*r):], 32*r) + blockXOR(x, v[j*R:], R) blockMix(&tmp, x, y, r) j = int(integer(y, r) & uint64(N-1)) - blockXOR(y, v[j*(32*r):], 32*r) + blockXOR(y, v[j*R:], R) blockMix(&tmp, y, x, r) } j = 0 - for _, v := range x[:32*r] { - b[j+0] = byte(v >> 0) - b[j+1] = byte(v >> 8) - b[j+2] = byte(v >> 16) - b[j+3] = byte(v >> 24) + for _, v := range x[:R] { + binary.LittleEndian.PutUint32(b[j:], v) j += 4 } } |