1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465 |
- package encrypt
- import (
- "crypto/cipher"
- )
- type ecb struct {
- b cipher.Block
- blockSize int
- }
- func newECB(b cipher.Block) *ecb {
- return &ecb{
- b: b,
- blockSize: b.BlockSize(),
- }
- }
- type ecbEncrypter ecb
- // NewECBEncrypter returns a BlockMode which encrypts in electronic code book
- // mode, using the given Block.
- func NewECBEncrypter(b cipher.Block) cipher.BlockMode {
- return (*ecbEncrypter)(newECB(b))
- }
- func (x *ecbEncrypter) BlockSize() int { return x.blockSize }
- func (x *ecbEncrypter) CryptBlocks(dst, src []byte) {
- if len(src)%x.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 {
- x.b.Encrypt(dst, src[:x.blockSize])
- src = src[x.blockSize:]
- dst = dst[x.blockSize:]
- }
- }
- type ecbDecrypter ecb
- // NewECBDecrypter returns a BlockMode which decrypts in electronic code book
- // mode, using the given Block.
- func NewECBDecrypter(b cipher.Block) cipher.BlockMode {
- return (*ecbDecrypter)(newECB(b))
- }
- func (x *ecbDecrypter) BlockSize() int { return x.blockSize }
- func (x *ecbDecrypter) CryptBlocks(dst, src []byte) {
- if len(src)%x.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 {
- x.b.Decrypt(dst, src[:x.blockSize])
- src = src[x.blockSize:]
- dst = dst[x.blockSize:]
- }
- }
|