Node.js Crypto class returns different results with updated version

Question

The following code creates the HTML output for a single icon button that is added to the page. In node version 0.5.x, the key is accepted by the server when the button is clicked, but after upgrading to 0.10.x it does not work and creates a different output. No mistakes. Is the cryptoclass modified? Please note that the key, url and iv have been slightly modified to avoid publishing secure information, but are of the correct length.

var util = require('util'); var crypto = require('crypto'); var fs = require('fs'); var dateFormat = require('dateformat'); var AESCrypt = {}; AESCrypt.encrypt = function(cryptkey, iv, cleardata) { var encipher = crypto.createCipheriv('aes-256-cbc', cryptkey, iv), encryptdata = encipher.update(cleardata); encryptdata += encipher.final('binary'); encode_encryptdata = new Buffer(encryptdata, 'binary').toString('hex'); return encode_encryptdata; } function getKey(email){ var now = new Date(); var key = new Buffer("F4553ECE8E0039675E8DA176D23BD82D455BB6272B574FDD6185296432CE1AD9",'hex'), iv = new Buffer("D95897EA52A8A0C8DF231C8F2DBE59A7",'hex'), key_bin = key.toString('binary'), iv_bin = iv.toString('binary'), text = new Buffer('mystring','ascii'), text_bin = text.toString('binary'); var enc = AESCrypt.encrypt(key_bin, iv_bin, text_bin); var page = '<form method="POST" action="https://somedomain.com/AES.aspx"><input type="hidden" name="key" value="'+enc+'"/><input type="hidden" name="ouid" value="1"/><input type="submit" value="Log ine"/></form>'; return page; } if(process.argv[2]) { email = process.argv[2]; console.log(getKey(email)); } else{ console.log('Something may be wrong with your email address>') } 

Answer 1

It seems that - at least for later versions of NodeJS - Buffer.concat() is required instead of the += operator.

Answer 2

Woking Code:

 var crypto = require('crypto'); var ecr = function(str) { var cipher = crypto.createCipher('aes-256-cbc', 'passphase'); var cryptedBuffers = [cipher.update(new Buffer(str))]; cryptedBuffers.push(cipher.final()); var crypted = Buffer.concat(cryptedBuffers); return crypted; }; var dcr = function(str) { var dcipher = crypto.createDecipher('aes-256-cbc', 'passphase'); var dcryptedBuffers = [dcipher.update(new Buffer(str))]; dcryptedBuffers.push(dcipher.final()); var dcrypted = Buffer.concat(dcryptedBuffers) .toString('utf8'); return dcrypted; }; console.log(dcr(ecr('hello test')));