AES加密/解密工具
支持ECB、CBC、CFB、CTR、OFB等多种加密模式，实时加密解密
加密配置
原文
密文
示例代码
各语言示例代码
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aes加解密 (GO)
1package main 2 3import ( 4 "bytes" 5 "crypto/aes" 6 "crypto/cipher" 7 "errors" 8 "fmt" 9) 10 11func main() { 12 str := "www.lovefree.cc" 13 key := "aeskeyisverygood" 14 data, err := AesEncrypt([]byte(str), []byte(key)) 15 if err != nil { 16 fmt.Println(err) 17 return 18 } 19 fmt.Println(string(data)) 20 data, err = AesDecrypt(data, []byte(key)) 21 if err != nil { 22 fmt.Println(err) 23 return 24 } 25 fmt.Println(string(data)) 26} 27 28func AesDecrypt(crypted, key []byte) ([]byte, error) { 29 block, err := aes.NewCipher(key) 30 if err != nil { 31 return nil, err 32 } 33 blockMode := NewECBDecrypter(block) 34 origData := make([]byte, len(crypted)) 35 blockMode.CryptBlocks(origData, crypted) 36 origData = PKCS5UnPadding(origData) 37 return origData, nil 38} 39 40func AesEncrypt(content, key []byte) ([]byte, error) { 41 block, err := aes.NewCipher(key) 42 if err != nil { 43 return nil, err 44 } 45 if len(content) == 0 { 46 return nil, errors.New("plain content empty") 47 } 48 ecb := NewECBEncrypter(block) 49 content = PKCS5Padding(content, block.BlockSize()) 50 crypted := make([]byte, len(content)) 51 ecb.CryptBlocks(crypted, content) 52 return crypted, nil 53} 54 55func PKCS5Padding(ciphertext []byte, blockSize int) []byte { 56 padding := blockSize - len(ciphertext)%blockSize 57 padtext := bytes.Repeat([]byte{byte(padding)}, padding) 58 return append(ciphertext, padtext...) 59} 60 61func PKCS5UnPadding(origData []byte) []byte { 62 length := len(origData) 63 unpadding := int(origData[length-1]) 64 return origData[:(length - unpadding)] 65} 66 67// ECB 68type ecb struct { 69 b cipher.Block 70 blockSize int 71} 72 73func newECB(b cipher.Block) *ecb { 74 return &ecb{ 75 b: b, 76 blockSize: b.BlockSize(), 77 } 78} 79 80type ecbEncrypter ecb 81 82// NewECBEncrypter returns a BlockMode which encrypts in electronic code book 83// mode, using the given Block. 84func NewECBEncrypter(b cipher.Block) cipher.BlockMode { 85 return (*ecbEncrypter)(newECB(b)) 86} 87func (x *ecbEncrypter) BlockSize() int { return x.blockSize } 88func (x *ecbEncrypter) CryptBlocks(dst, src []byte) { 89 if len(src)%x.blockSize != 0 { 90 panic("crypto/cipher: input not full blocks") 91 } 92 if len(dst) < len(src) { 93 panic("crypto/cipher: output smaller than input") 94 } 95 for len(src) > 0 { 96 x.b.Encrypt(dst, src[:x.blockSize]) 97 src = src[x.blockSize:] 98 dst = dst[x.blockSize:] 99 } 100} 101 102type ecbDecrypter ecb 103 104// NewECBDecrypter returns a BlockMode which decrypts in electronic code book 105// mode, using the given Block. 106func NewECBDecrypter(b cipher.Block) cipher.BlockMode { 107 return (*ecbDecrypter)(newECB(b)) 108} 109func (x *ecbDecrypter) BlockSize() int { return x.blockSize } 110func (x *ecbDecrypter) CryptBlocks(dst, src []byte) { 111 if len(src)%x.blockSize != 0 { 112 panic("crypto/cipher: input not full blocks") 113 } 114 if len(dst) < len(src) { 115 panic("crypto/cipher: output smaller than input") 116 } 117 for len(src) > 0 { 118 x.b.Decrypt(dst, src[:x.blockSize]) 119 src = src[x.blockSize:] 120 dst = dst[x.blockSize:] 121 } 122} -
aes加解密 (JS)
1const txt = 'Message'; 2const key = 'Secret Passphrase'; 3const iv = ''; 4 5// 加密 6function encrypt(text) { 7 return CryptoJS.AES.encrypt(text, CryptoJS.enc.Utf8.parse(key), { 8 iv: CryptoJS.enc.Utf8.parse(iv), 9 mode: CryptoJS.mode.CBC, 10 padding: CryptoJS.pad.Pkcs7 11 }).toString() 12} 13 14// 解密 15function decrypt(text) { 16 let decrypted = CryptoJS.AES.decrypt(text, CryptoJS.enc.Utf8.parse(key), { 17 iv: CryptoJS.enc.Utf8.parse(iv), 18 mode: CryptoJS.mode.CBC, 19 padding: CryptoJS.pad.Pkcs7 20 }); 21 return decrypted.toString(CryptoJS.enc.Utf8) 22} 23 24const sign = encrypt(txt); 25console.log('加密：', sign); 26const _src = decrypt(sign); 27console.log('解密：', _src);
小知识
AES加密标准
高级加密标准（Advanced Encryption Standard，AES），又称Rijndael加密法， 是美国联邦政府采用的一种区块加密标准，是目前最流行的对称加密算法。
加密模式
ECB：最简单的模式，每个块独立加密；CBC：每个明文块先与前一个密文块进行异或后，再进行加密； CFB：将块密码变为流密码；CTR：将块密码变为流密码，使用计数器；OFB：将块密码变为流密码。