Question

我测试了here找到的加密/解密代码。代码是：

var crypto = require('crypto');

var encrypt = function(text){
    var algorithm = 'aes-256-ctr';
    var password = 'gh6ttr';
    var cipher = crypto.createCipher(algorithm,password)
    var crypted = cipher.update(JSON.stringify(text),'utf8','hex')
    crypted += cipher.final('hex');
    return crypted;
}

var decrypt = function(text){
    var algorithm = 'aes-256-ctr';
    var password = 'gh6ttr';
    var decipher = crypto.createDecipher(algorithm,password)
    var dec = decipher.update(JSON.stringify(text),'hex','utf8')
    dec += decipher.final('utf8');
    return dec;
}

var encrypted = encrypt('test');
console.log('encrypted is ', encrypted);

var decrypted = decrypt(encrypted);
console.log('decrypted is ', decrypted);

结果是：

encrypted is  66b1f8423a42
decrypted is

解密始终为空白。知道为什么这段代码不起作用吗？

Answer 1

这是因为你在加密字符串上使用JSON.stringify ......

var decrypt = function(text){
    var algorithm = 'aes-256-ctr';
    var password = 'gh6ttr';
    var decipher = crypto.createDecipher(algorithm,password)
    var dec = decipher.update(text,'hex','utf8')
    dec += decipher.final('utf8');
    return JSON.decode(dec);
}

编辑：我需要注意的是，由于您的问题是“使用节点加密和解密字符串”，因此绝对没有理由在这两个函数中使用JSON函数。

Answer 2

解密时，您不应该对加密文本进行JSON字符串化：

var dec = decipher.update(text, 'hex', 'utf8')

Answer 3

请看下面的代码：

加密文字'abc'

var mykey = crypto.createCipher('aes-128-cbc', 'mypassword');
var mystr = mykey.update('abc', 'utf8', 'hex')
mystr += mykey.update.final('hex');

console.log(mystr); //34feb914c099df25794bf9ccb85bea72

解密回'abc'

var mykey = crypto.createDecipher('aes-128-cbc', 'mypassword');
var mystr = mykey.update('34feb914c099df25794bf9ccb85bea72', 'hex', 'utf8')
mystr += mykey.update.final('utf8');

console.log(mystr); //abc

希望有所帮助，

祝你好运，干杯

Ashish Sebastian

使用节点加密和解密字符串

3 个答案: