Gecko [ 167.86.127.34 ]

Name	Size	Permission
aes_gcm.go	5.72 KB	-rw-r--r--
aes_test.go	11.3 KB	-rw-r--r--
asm_amd64.s	5.4 KB	-rw-r--r--
asm_arm64.s	6.86 KB	-rw-r--r--
asm_ppc64le.s	20.17 KB	-rw-r--r--
asm_s390x.s	4.38 KB	-rw-r--r--
block.go	6.5 KB	-rw-r--r--
cbc_s390x.go	1.57 KB	-rw-r--r--
cipher.go	1.85 KB	-rw-r--r--
cipher_asm.go	2.32 KB	-rw-r--r--
cipher_generic.go	740 B	-rw-r--r--
cipher_ppc64le.go	2.07 KB	-rw-r--r--
cipher_s390x.go	2.6 KB	-rw-r--r--
const.go	29.32 KB	-rw-r--r--
ctr_s390x.go	2.44 KB	-rw-r--r--
gcm_amd64.s	23.42 KB	-rw-r--r--
gcm_arm64.s	21.52 KB	-rw-r--r--
gcm_ppc64le.go	6.7 KB	-rw-r--r--
gcm_ppc64le.s	12.78 KB	-rw-r--r--
gcm_s390x.go	11.35 KB	-rw-r--r--
modes.go	1.15 KB	-rw-r--r--
modes_test.go	3.48 KB	-rw-r--r--

Code Editor : cipher.go

// 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"
	"crypto/internal/subtle"
	"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
	}
	return newCipher(key)
}

// newCipherGeneric creates and returns a new cipher.Block
// implemented in pure Go.
func newCipherGeneric(key []byte) (cipher.Block, error) {
	n := len(key) + 28
	c := aesCipher{make([]uint32, n), make([]uint32, n)}
	expandKeyGo(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")
	}
	if subtle.InexactOverlap(dst[:BlockSize], src[:BlockSize]) {
		panic("crypto/aes: invalid buffer overlap")
	}
	encryptBlockGo(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")
	}
	if subtle.InexactOverlap(dst[:BlockSize], src[:BlockSize]) {
		panic("crypto/aes: invalid buffer overlap")
	}
	decryptBlockGo(c.dec, dst, src)
}

${this.title}

Code Editor : cipher.go