utils.js

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,
 
};