JavaScript实现加密与解密详解

<script type="text/javascript" src="path-to/bower_components/crypto-js/crypto-js.js"></script>
<script type="text/javascript">
    var encrypted = CryptoJS.AES(...);
    var encrypted = CryptoJS.SHA256(...);
</script>

//加密实例一
  console.log("加密结果一 MD5:"+CryptoJS.MD5("你好")); 
  
//加密实例二  
var pwd="passwor";
console.log("加密结果二 HMac-MD5:   "+CryptoJS.HmacMD5("你好",pwd));

// 加密
var ciphertext = CryptoJS.AES.encrypt('my message', 'secret key 123').toString();

// 解密
var bytes  = CryptoJS.AES.decrypt(ciphertext, 'secret key 123');
var originalText = bytes.toString(CryptoJS.enc.Utf8);

console.log(originalText); // 'my message'

var data = [{id: 1}, {id: 2}]

// 加密
var ciphertext = CryptoJS.AES.encrypt(JSON.stringify(data), 'secret key 123').toString();

// 解密
var bytes  = CryptoJS.AES.decrypt(ciphertext, 'secret key 123');
var decryptedData = JSON.parse(bytes.toString(CryptoJS.enc.Utf8));

console.log(decryptedData); // [{id: 1}, {id: 2}]

var key = CryptoJS.enc.Utf8.parse('AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA'); //密钥 
var iv  = CryptoJS.enc.Utf8.parse('1234567812345678');
// 加密
var encrypted = CryptoJS.AES.encrypt("Message", key, { iv: iv });

// 解密
var decrypted =CryptoJS.AES.decrypt(encrypted,key,
        {
            iv:iv,
            mode:CryptoJS.mode.CBC,
            padding:CryptoJS.pad.Pkcs7
        });
var originalText = decrypted.toString(CryptoJS.enc.Utf8); 

var key  = CryptoJS.enc.Utf8.parse('AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA');  //密钥 
var iv   = CryptoJS.enc.Utf8.parse('1234567812345678');
var encrypted =CryptoJS.AES.encrypt("Message", ,key,
        {
            iv:iv,
            mode:CryptoJS.mode.CBC,
            padding:CryptoJS.pad.Pkcs7
        }); //返回的是base64格式的密文

var Words = CryptoJS.enc.Base64.parse("SGVsbG8sIFdvcmxkIQ==");
​var base64 = CryptoJS.enc.Base64.stringify(words);
​
var words = CryptoJS.enc.Hex.parse("48656c6c6f2c20576f726c6421");
​var hex = CryptoJS.enc.Hex.stringify(words);
​
var words = CryptoJS.enc.Utf8.parse("");
​var utf8 = CryptoJS.enc.Utf8.stringify(words);

var hash = md5('value') // "2063c1608d6e0baf80249c42e2be5804"
var v1= md5('{"name":"嘻嘻嘻嘻嘻嘻嘻嘻嘻","age":22}'); //56b21847ed32d2d96cf74077b22342eb

var hash = md5('value', 'key') // "01433efd5f16327ea4b31144572c67f6"

var hash = md5('value', null, true)

var hash = md5('value', 'key', true)