使用此Gist，我能够在Node.js
0.8.7中成功解密AES256。然后，当我升级到Node.js 0.10.24时，现在看到此错误：

TypeError：错误：0606506D：数字信封例程：EVP_DecryptFinal_ex：
Decipheriv.Cipher.final（crypto.js：292：27）的最终块长度错误

这是Gist的解密代码（为方便起见，在此处显示）：

var crypto = require('crypto');

var AESCrypt = {};

AESCrypt.decrypt = function(cryptkey, iv, encryptdata) {
encryptdata = new Buffer(encryptdata, 'base64').toString('binary');

var decipher = crypto.createDecipheriv('aes-256-cbc', cryptkey, iv),
decoded = decipher.update(encryptdata);

decoded += decipher.final();
return decoded;
}

AESCrypt.encrypt = function(cryptkey, iv, cleardata) {
var encipher = crypto.createCipheriv('aes-256-cbc', cryptkey, iv),
encryptdata = encipher.update(cleardata);

encryptdata += encipher.final();
encode_encryptdata = new Buffer(encryptdata, 'binary').toString('base64');
return encode_encryptdata;
}

var cryptkey = crypto.createHash('sha256').update('Nixnogen').digest(),
iv = 'a2xhcgAAAAAAAAAA',
buf = "Here is some data for the encrypt", // 32 chars
enc = AESCrypt.encrypt(cryptkey, iv, buf);
var dec = AESCrypt.decrypt(cryptkey, iv, enc);

console.warn("encrypt length: ", enc.length);
console.warn("encrypt in Base64:", enc);
console.warn("decrypt all: " + dec);