diff options
Diffstat (limited to 'src/pkg/crypto/aes/cipher.go')
-rw-r--r-- | src/pkg/crypto/aes/cipher.go | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/src/pkg/crypto/aes/cipher.go b/src/pkg/crypto/aes/cipher.go deleted file mode 100644 index 2c6bb0a89..000000000 --- a/src/pkg/crypto/aes/cipher.go +++ /dev/null @@ -1,66 +0,0 @@ -// Copyright 2009 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 aes - -import ( - "crypto/cipher" - "strconv" -) - -// The AES block size in bytes. -const BlockSize = 16 - -// A cipher is an instance of AES encryption using a particular key. -type aesCipher struct { - enc []uint32 - dec []uint32 -} - -type KeySizeError int - -func (k KeySizeError) Error() string { - return "crypto/aes: invalid key size " + strconv.Itoa(int(k)) -} - -// NewCipher creates and returns a new cipher.Block. -// The key argument should be the AES key, -// either 16, 24, or 32 bytes to select -// AES-128, AES-192, or AES-256. -func NewCipher(key []byte) (cipher.Block, error) { - k := len(key) - switch k { - default: - return nil, KeySizeError(k) - case 16, 24, 32: - break - } - - n := k + 28 - c := &aesCipher{make([]uint32, n), make([]uint32, n)} - expandKey(key, c.enc, c.dec) - return c, nil -} - -func (c *aesCipher) BlockSize() int { return BlockSize } - -func (c *aesCipher) Encrypt(dst, src []byte) { - if len(src) < BlockSize { - panic("crypto/aes: input not full block") - } - if len(dst) < BlockSize { - panic("crypto/aes: output not full block") - } - encryptBlock(c.enc, dst, src) -} - -func (c *aesCipher) Decrypt(dst, src []byte) { - if len(src) < BlockSize { - panic("crypto/aes: input not full block") - } - if len(dst) < BlockSize { - panic("crypto/aes: output not full block") - } - decryptBlock(c.dec, dst, src) -} |