# Hash After created an instance of `Hash` you can have access to all methods. ```javascript import { Hash } from '@akanass/rx-crypto'; const hash: Hash = new Hash(); ``` ## Table of contents * [API in Detail](#api-in-detail) * [.generate(data, salt, iterations, keylen, digest)](#generatedata-salt-iterations-keylen-digest) * [Change History](#change-history) ## API in Detail ### `.generate(data, salt, iterations, keylen, digest)` Provides an asynchronous Password-Based Key Derivation Function 2 (PBKDF2) implementation. A selected HMAC `digest` algorithm specified by digest is applied to derive a key of the requested byte length (`keylen`) from the `password`, `salt` and `iterations`. **Parameters:** > - ***{string | Buffer} data*** *(required): data will be hashed. Generally a password in key creation.* > - ***{string | Buffer} salt*** *(required): salt should also be as unique as possible. It is recommended that the salts are random and their lengths are greater than 16 bytes.* > - ***{number} iterations*** *(required): iterations argument must be a number set as high as possible. The higher the number of iterations, the more secure the derived key will be, but will take a longer amount of time to complete.* > - ***{number} keylen*** *(required): keylen requested byte length.* > - ***{string} digest*** *(required): digest HMAC digest algorithm is applied to derive a key of the requested byte length (keylen).* **Response:** > *{[RxJS.Observable](https://github.com/ReactiveX/rxjs/blob/master/src/internal/Observable.ts)} The successfully generated `derivedKey` will be passed as a `Buffer`.* **Example:** ```javascript hash.generate('P3HQdR35PUQLZ5ioOrsPlxx7QWra7WQl', 'Kt9V3wgxrhpf8GN3', 4096, 24, 'sha256') .subscribe( (buffer: Buffer) => console.log(buffer.toString('hex')), // Show `61cac683ff27580e4c68778df5208c745b0e473172778658` in the console e => console.error(e.message) // Show error message in the console ); ``` [Back to top](#table-of-contents) ## Change History * Implementation of all methods (2019-08-27) * [.generate(data,salt,iterations,keylen,digest)](#generatedata-salt-iterations-keylen-digest) [Back to top](#table-of-contents)