diff options
Diffstat (limited to 'libgo/go/crypto/hmac/hmac.go')
| -rw-r--r-- | libgo/go/crypto/hmac/hmac.go | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/libgo/go/crypto/hmac/hmac.go b/libgo/go/crypto/hmac/hmac.go index deaceafb260..6e7dd8762c8 100644 --- a/libgo/go/crypto/hmac/hmac.go +++ b/libgo/go/crypto/hmac/hmac.go @@ -49,14 +49,13 @@ func (h *hmac) tmpPad(xor byte) { } func (h *hmac) Sum(in []byte) []byte { - sum := h.inner.Sum(nil) + origLen := len(in) + in = h.inner.Sum(in) h.tmpPad(0x5c) - for i, b := range sum { - h.tmp[padSize+i] = b - } + copy(h.tmp[padSize:], in[origLen:]) h.outer.Reset() h.outer.Write(h.tmp) - return h.outer.Sum(in) + return h.outer.Sum(in[:origLen]) } func (h *hmac) Write(p []byte) (n int, err error) { |