AES encryption & decryption in Deno

deno_aes_encryption_decryption.ts

import {
  decode as hd,
  encode as he,
} from "https://deno.land/std/encoding/hex.ts";
const te = (s: string) => new TextEncoder().encode(s),
  td = (d: Uint8Array) => new TextDecoder().decode(d);

const rawKey = new Uint8Array([
  238,
  17,
  126,
  165,
  51,
  88,
  22,
  218,
  53,
  172,
  137,
  113,
  210,
  198,
  109,
  117,
]);
const key = await crypto.subtle.importKey(
  "raw",
  rawKey.buffer,
  "AES-CBC",
  true,
  ["encrypt", "decrypt"],
);

const plainText = "Learning Deno is fun!!";
const iv = await crypto.getRandomValues(new Uint8Array(16));
const encrypted = await crypto.subtle.encrypt(
  { name: "AES-CBC", iv },
  key,
  te(plainText),
);
const encryptedBytes = new Uint8Array(encrypted);
const hexBytes = td(he(encryptedBytes));
console.log("Encrypted hex data", hexBytes);

const decrypted = await crypto.subtle.decrypt(
  { name: "AES-CBC", iv },
  key,
  hd(te(hexBytes)),
);
const decryptedBytes = new Uint8Array(decrypted);
const decryptedText = td(decryptedBytes);
console.log("Decrypted data", decryptedText);