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

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);