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_pkg.dev: drop crypto/aes, refs #307

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Duplicated by pkg/crypto/aes256.go.
This commit is contained in:
Roman Khimov 2019-08-21 20:17:41 +03:00
parent 4640394aca
commit bc0a4671d4
1 changed files with 0 additions and 93 deletions
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93
_pkg.dev/crypto/aes/aes256.go
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@ -1,93 +0,0 @@
package aes
import (
"crypto/aes"
"crypto/cipher"
)
// Encrypt encrypts the key with the given source.
func Encrypt(src, key []byte) ([]byte, error) {
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
ecb := newECBEncrypter(block)
out := make([]byte, len(src))
ecb.CryptBlocks(out, src)
return out, nil
}
// Decrypt decrypts the encrypted source with the given key.
func Decrypt(crypted, key []byte) ([]byte, error) {
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
blockMode := newECBDecrypter(block)
out := make([]byte, len(crypted))
blockMode.CryptBlocks(out, crypted)
return out, nil
}
type ecb struct {
b cipher.Block
blockSize int
}
func newECB(b cipher.Block) *ecb {
return &ecb{
b: b,
blockSize: b.BlockSize(),
}
}
type ecbEncrypter ecb
func newECBEncrypter(b cipher.Block) cipher.BlockMode {
return (*ecbEncrypter)(newECB(b))
}
func (ecb *ecbEncrypter) BlockSize() int {
return ecb.blockSize
}
func (ecb *ecbEncrypter) CryptBlocks(dst, src []byte) {
if len(src)%ecb.blockSize != 0 {
panic("crypto/cipher: input not full blocks")
}
if len(dst) < len(src) {
panic("crypto/cipher: output smaller than input")
}
for len(src) > 0 {
ecb.b.Encrypt(dst, src[:ecb.blockSize])
src = src[ecb.blockSize:]
dst = dst[ecb.blockSize:]
}
}
type ecbDecrypter ecb
func newECBDecrypter(b cipher.Block) cipher.BlockMode {
return (*ecbDecrypter)(newECB(b))
}
func (ecb ecbDecrypter) BlockSize() int {
return ecb.blockSize
}
func (ecb *ecbDecrypter) CryptBlocks(dst, src []byte) {
if len(src)%ecb.blockSize != 0 {
panic("crypto/cipher: input not full blocks")
}
if len(dst) < len(src) {
panic("crypto/cipher: output smaller than input")
}
for len(src) > 0 {
ecb.b.Decrypt(dst, src[:ecb.blockSize])
src = src[ecb.blockSize:]
dst = dst[ecb.blockSize:]
}
}