diff options
Diffstat (limited to 'src/pkg/crypto/sha1/sha1.go')
| -rw-r--r-- | src/pkg/crypto/sha1/sha1.go | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/src/pkg/crypto/sha1/sha1.go b/src/pkg/crypto/sha1/sha1.go index 7cfde47dc..8eb3f7a79 100644 --- a/src/pkg/crypto/sha1/sha1.go +++ b/src/pkg/crypto/sha1/sha1.go @@ -90,9 +90,13 @@ func (d *digest) Write(p []byte) (nn int, err error) { func (d0 *digest) Sum(in []byte) []byte { // Make a copy of d0 so that caller can keep writing and summing. d := *d0 + hash := d.checkSum() + return append(in, hash[:]...) +} - // Padding. Add a 1 bit and 0 bits until 56 bytes mod 64. +func (d *digest) checkSum() [Size]byte { len := d.len + // Padding. Add a 1 bit and 0 bits until 56 bytes mod 64. var tmp [64]byte tmp[0] = 0x80 if len%64 < 56 { @@ -120,5 +124,13 @@ func (d0 *digest) Sum(in []byte) []byte { digest[i*4+3] = byte(s) } - return append(in, digest[:]...) + return digest +} + +// Sum returns the SHA1 checksum of the data. +func Sum(data []byte) [Size]byte { + var d digest + d.Reset() + d.Write(data) + return d.checkSum() } |