5paisajs/utils.js

Javascript client for 5paisa APIs natively written in .NET

const crypto = require('crypto');

const iv = new Buffer.from([
  83,
  71,
  26,
  58,
  54,
  35,
  22,
  11,
  83,
  71,
  26,
  58,
  54,
  35,
  22,
  11,
]);

const AES256Encrypt = (key, text) => {
  const keyLen = 256;
  const IVLen = 128;

  try {
    const keyGen = crypto.pbkdf2Sync(
        Buffer.from(key),
        Uint8Array.from(iv),
        1000,
        keyLen + IVLen,
        'sha1',
    );

    const aesKey = Buffer.allocUnsafe(32);
    const aesIV = Buffer.allocUnsafe(16);

    // you need to limit the buffer copy to 16 for aesIV.
    keyGen.copy(aesIV, 0, 0, 16);
    keyGen.copy(aesKey, 0, 16);
    const cipher = crypto.createCipheriv('aes-256-cbc', aesKey, aesIV);

    let encrypted = cipher.update(text, 'utf8', 'base64');
    encrypted += cipher.final('base64');

    return encrypted;
  } catch (error) {
    console.log(error, 'error in encrypt');
  }
};

module.exports = {
  AES256Encrypt: AES256Encrypt,
};