xref: /third_party/node/test/parallel/test-crypto-padding-aes256.js

// Copyright Joyent, Inc. and other Node contributors.
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//
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'use strict';
const common = require('../common');
if (!common.hasCrypto)
  common.skip('missing crypto');

const assert = require('assert');
const crypto = require('crypto');

const iv = Buffer.from('00000000000000000000000000000000', 'hex');
const key = Buffer.from('0123456789abcdef0123456789abcdef' +
                        '0123456789abcdef0123456789abcdef', 'hex');

function encrypt(val, pad) {
  const c = crypto.createCipheriv('aes256', key, iv);
  c.setAutoPadding(pad);
  return c.update(val, 'utf8', 'latin1') + c.final('latin1');
}

function decrypt(val, pad) {
  const c = crypto.createDecipheriv('aes256', key, iv);
  c.setAutoPadding(pad);
  return c.update(val, 'latin1', 'utf8') + c.final('utf8');
}

// echo 0123456789abcdef0123456789abcdef \
// | openssl enc -e -aes256 -nopad -K <key> -iv <iv> \
// | openssl enc -d -aes256 -nopad -K <key> -iv <iv>
let plaintext = '0123456789abcdef0123456789abcdef'; // Multiple of block size
let encrypted = encrypt(plaintext, false);
let decrypted = decrypt(encrypted, false);
assert.strictEqual(decrypted, plaintext);

// echo 0123456789abcdef0123456789abcde \
// | openssl enc -e -aes256 -K <key> -iv <iv> \
// | openssl enc -d -aes256 -K <key> -iv <iv>
plaintext = '0123456789abcdef0123456789abcde'; // not a multiple
encrypted = encrypt(plaintext, true);
decrypted = decrypt(encrypted, true);
assert.strictEqual(decrypted, plaintext);