Files
Russ Cox 470549d502 go.crypto: initial code
Manual edits to README.
Moved from main Go repository, deleted Makefiles, ran gofix -r go1rename.

Tested with: go test code.google.com/p/go.crypto/...

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5564059
2012-01-25 15:31:12 -05:00

36 lines
817 B
Go

// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package bcrypt
import "encoding/base64"
const alphabet = "./ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
var bcEncoding = base64.NewEncoding(alphabet)
func base64Encode(src []byte) []byte {
n := bcEncoding.EncodedLen(len(src))
dst := make([]byte, n)
bcEncoding.Encode(dst, src)
for dst[n-1] == '=' {
n--
}
return dst[:n]
}
func base64Decode(src []byte) ([]byte, error) {
numOfEquals := 4 - (len(src) % 4)
for i := 0; i < numOfEquals; i++ {
src = append(src, '=')
}
dst := make([]byte, bcEncoding.DecodedLen(len(src)))
n, err := bcEncoding.Decode(dst, src)
if err != nil {
return nil, err
}
return dst[:n], nil
}