diff options
| -rw-r--r-- | lib/sha1.go | 34 |
1 files changed, 2 insertions, 32 deletions
diff --git a/lib/sha1.go b/lib/sha1.go index 559d515..0b6ddef 100644 --- a/lib/sha1.go +++ b/lib/sha1.go @@ -72,42 +72,12 @@ func sha1KT(t int) uint32 { // SHA-1 - Pad message such that its length is a multiple of 512. func sha1Pad(m []byte) []byte { - l := len(m) * 8 // msg size in bits - - // Reckon value of `k` - k := 0 - for ((l + 1 + k) % 512) != 448 { - k += 1 - } - // Initialize padded message pm := make([]byte, len(m)) copy(pm, m) - // Add bit `1` as byte block. - pm = append(pm, 0x80) - f := 7 // unclaimed bits in last byte of `pm` - - // Add `k` bit `0`s - for i := 0; i < k; i++ { - if f == 0 { - pm = append(pm, 0x0) - f = 8 - } - f = f - 1 - } - - // Add `l` in a 64 bit block in `pm` - l64 := uint64(l) - b64 := make([]byte, 8) // last 64-bits - for i := 7; i >= 0; i-- { - // Get 8 last bits. - b64[i] = byte(l64 & 0xFF) - - // Get rid of the last 8 bits. - l64 = l64 >> 8 - } - pm = append(pm, b64...) + // Add padding. + pm = append(pm, MDPadding(m)...) return pm } |