Question

下面的代码有效

var crypto = require('crypto');
var cipher = crypto.createCipher('aes-128-cbc','abcdefghijklmnop')
var http = require('http')

var userStr = 'a134aad';
var crypted = cipher.update(userStr, 'utf8', 'hex');
crypted += cipher.final('hex');
console.log(crypted);

但是当进入服务器回调时，它不起作用，当请求到达并且节点被压碎时，它会在err以下抛出：

http.createServer(function(req, res){
    var userStr = 'a134aad';
    var crypted = cipher.update(userStr, 'utf8', 'hex');
    crypted += cipher.final('hex');
    console.log(crypted);

    res.end('hello');
}).listen(9888)

---------------------------------

7364aee753f0568f7e5171add6868b75
crypto.js:170
  var ret = this._handle.update(data, inputEncoding);
                         ^
Error: Trying to add data in unsupported state
    at Cipher.update (crypto.js:170:26)
    at Server.<anonymous> (C:\Users\58\Desktop\sha256.js:12:26)
    at emitTwo (events.js:126:13)
    at Server.emit (events.js:214:7)
    at parserOnIncoming (_http_server.js:602:12)
    at HTTPParser.parserOnHeadersComplete (_http_common.js:117:23)

Answer 1

结果

var cipher = crypto.createCipher('aes-128-cbc','abcdefghijklmnop')

不应重复使用。我也将其放入服务器回调中，问题已解决。

Answer 2

签出

那主要是因为我们每次运行加密或解密就要重复crypto.createCipher('aes192', secrateKey);和crypto.createDecipher('aes192', secrateKey);

let secrateKey = "secrateKey";
const crypto = require('crypto');


function encrypt(text) {
    encryptalgo = crypto.createCipher('aes192', secrateKey);
    let encrypted = encryptalgo.update(text, 'utf8', 'hex');
    encrypted += encryptalgo.final('hex');
    return encrypted;
}

function decrypt(encrypted) {
    decryptalgo = crypto.createDecipher('aes192', secrateKey);
    let decrypted = decryptalgo.update(encrypted, 'hex', 'utf8');
    decrypted += decryptalgo.final('utf8');
    return decrypted;
}

let encryptedText = encrypt("hello");
console.log(encryptedText);

let decryptedText = decrypt(encryptedText);
console.log(decryptedText);

希望这会有所帮助！

Answer 3

您需要在使用之前创建密码。喜欢：

let cipher = crypto.createCipher("aes-256-cbc", key, iv);

key = 可以是任何随机字符串。（我更喜欢使用 32 位长，因为您可能会因不准确的 32 位长键而出错）

iv = 初始化向量。

key 和 iv 都需要 utf-8。

结帐文档：https://nodejs.org/api/crypto.html#crypto_crypto_createcipheriv_algorithm_key_iv_options

所以，最终的代码是这样的：

http.createServer(function(req, res){
var userStr = 'a134aad';
let key = "123456781234567812345678";
let iv= crypto.randomBytes(16);
let cipher = crypto.createCipher("aes-256-cbc", key, iv);
var crypted = cipher.update(userStr, 'utf8', 'hex');
crypted += cipher.final('hex');
console.log(crypted);

res.end('hello');
}).listen(9888)

**另外，如果您发现任何错误，请随时纠正我！

尝试在Cipher.update中以不受支持的状态添加数据

3 个答案: