This is node.js code and works fine. I wanna to use same DB for session stuff with Node.js server also with python server.
In register request i need working copy code in python variant…

const crypto = require('crypto');

const algorithm = 'aes-256-ctr';
const ENCRYPTION_KEY = Buffer.from('*******', 'base64');
const IV_LENGTH = 16;

class CryptoHandler {

  constructor() {
  }

  encrypt(text) {
    let iv = crypto.randomBytes(IV_LENGTH);
    let cipher = crypto.createCipheriv(algorithm, Buffer.from(ENCRYPTION_KEY, 'hex'), iv);
    let encrypted = cipher.update(text);
    encrypted = Buffer.concat([encrypted, cipher.final()]);
    return iv.toString('hex') + ':' + encrypted.toString('hex');
}

  decrypt(text) {
    let textParts = text.split(':');
    let iv = Buffer.from(textParts.shift(), 'hex');
    let encryptedText = Buffer.from(textParts.join(':'), 'hex');
    let decipher = crypto.createDecipheriv(algorithm, Buffer.from(ENCRYPTION_KEY, 'hex'), iv);
    let decrypted = decipher.update(encryptedText);
    decrypted = Buffer.concat([decrypted, decipher.final()]);
    return decrypted.toString();
}

}

module.exports = CryptoHandler;

Any suggestion!