AES加密的两种方式ECB与CBC

AES为对称加密

ECB只需要秘钥key、而CBC需要秘钥key和iv，相当于需要两把钥匙。

本文使用的是JavaScript代码实现，需要引入js文件

<script src="https://cdn.bootcdn.net/ajax/libs/crypto-js/4.1.1/crypto-js.min.js"></script>

CBC实现代码如下

function getAesString(data,key,iv){//加密
    var key  = CryptoJS.enc.Utf8.parse(key);
    var iv   = CryptoJS.enc.Utf8.parse(iv);
    var encrypted =CryptoJS.AES.encrypt(data,key,
        {
            iv:iv,
            mode:CryptoJS.mode.CBC,
            padding:CryptoJS.pad.Pkcs7
        });
    return encrypted.toString();    //返回的是base64格式的密文
}
function getDAesString(encrypted,key,iv){//解密
    var key  = CryptoJS.enc.Utf8.parse(key);
    var iv   = CryptoJS.enc.Utf8.parse(iv);
    var decrypted =CryptoJS.AES.decrypt(encrypted,key,
        {
            iv:iv,
            mode:CryptoJS.mode.CBC,
            padding:CryptoJS.pad.Pkcs7
        });
    return decrypted.toString(CryptoJS.enc.Utf8);     
}

function getAES(data){ //加密
    var key  = '8765432187654321';  //密钥
    var iv   = '1234567812345678';
    var encrypted =getAesString(data,key,iv); //密文
    var encrypted1 =CryptoJS.enc.Utf8.parse(encrypted);
    return encrypted;
}

function getDAes(data){//解密
    var key  = '8765432187654321';  //密钥
    var iv   = '1234567812345678';
    var decryptedStr =getDAesString(data,key,iv);
    return decryptedStr;
}
var aa = getAES("github.com");
var bb = getDAes(aa);
console.log(aa,bb);

ECB代码实现如下

var key = CryptoJS.enc.Utf8.parse("zhgerXHBVaaKm8xy")
var plaintText = 'onlystar'
var encryptedData = CryptoJS.AES.encrypt(plaintText, key, {
    mode: CryptoJS.mode.ECB,  
    padding: CryptoJS.pad.Pkcs7
})
 
console.log("加密前："+plaintText) // 加密前：onlystar
console.log("加密后："+encryptedData) // 加密后：cp7hxlPgStaA4Jod5uKCuQ==
 
encryptedData = encryptedData.ciphertext.toString()
 
var encryptedHexStr = CryptoJS.enc.Hex.parse(encryptedData)
console.log("解密前hex："+encryptedHexStr) // 解密前hex：729ee1c653e04ad680e09a1de6e282b9
var encryptedBase64Str = CryptoJS.enc.Base64.stringify(encryptedHexStr)
console.log("解密前："+encryptedBase64Str) // 解密前：cp7hxlPgStaA4Jod5uKCuQ==
var decryptedData = CryptoJS.AES.decrypt(encryptedBase64Str, key, { 
    mode: CryptoJS.mode.ECB,  
    padding: CryptoJS.pad.Pkcs7
})
 
var decryptedStr = decryptedData.toString(CryptoJS.enc.Utf8)
console.log("解密后:"+decryptedStr) // 解密后:onlystar

参考资料： https://blog.csdn.net/sinat_28371057/article/details/114608647