Hashing in nest js

  // // The key length is dependent on the algorithm.

// // In this case for aes256, it is 32 bytes.

const textToEncrypt = '1008';

const iv = randomBytes(16);

const password = 'Password used to generate key';

// The key length is dependent on the algorithm.

// In this case for aes256, it is 32 bytes.

const key = (await promisify(scrypt)(password, 'salt', 32)) as Buffer;

const cipher = createCipheriv('aes-256-ctr', key, iv);

const encryptedText = Buffer.concat([

cipher.update(textToEncrypt),

cipher.final(),

]);

console.log(encryptedText);

const finalEncryptedText = encryptedText.toString('hex');

// return finalEncryptedText;

const encryptedText2 = Buffer.from(finalEncryptedText, 'hex');

const decipher = createDecipheriv('aes-256-ctr', key, iv);

const decryptedText = Buffer.concat([

decipher.update(encryptedText2),

decipher.final(),

]);

return decryptedText.toString();