AES-CFB / AES-CFB8 encryption for Deno

import { Aes256Cfb } from "https://deno.land/x/aes_cfb/mod.ts";
// Aes256Cfb, Aes128Cfb, Aes192Cfb, 
// Aes256Cfb8, Aes128Cfb8, Aes192Cfb8
// are supported

const secret = new TextEncoder().encode("gUkXp2s5v8x/A?D(G+KbPeShVmYq3t6w");
const iv = secret.slice(0, 16);
// secret and iv are both Uint8Arrays

const cipher = new Aes256Cfb(secret, iv);
const decipher = new Aes256Cfb(secret, iv);

const data = new Uint8Array([1, 2, 3]);

cipher.encrypt(data);
console.log(data);

decipher.decrypt(data);
console.log(data);