aes_256_cbc.js

#!/usr/bin/env node
 
var crypto = require('crypto');
 
function encode(cryptkey, iv, cleardata) {
    var encipher = crypto.createCipheriv('aes-256-cbc', cryptkey, iv),
        encoded  = encipher.update(cleardata);
    
    encoded = Buffer.concat([encoded, encipher.final()]);
    return encoded;
}
 
var cryptkey   = crypto.createHash('sha256').update('Nixnogen').digest(),
    iv         = 'a2xhcgAAAAAAAAAA',
    buf        = "Here is some data for the coding", // 32 chars
    enc        = encode(cryptkey, iv, buf);
 
function b64enc(data) {
    var b   = new Buffer(data, 'binary');
    return b.toString('base64');
}
 
console.warn("Encoded length: ", enc.length);
console.warn("Encoded in Base64:", b64enc(enc));