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Crypto: Adding tests for new padding control.

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KiNgMaR authored and piscisaureus committed Dec 2, 2011
1 parent 2cafc70 commit b617ec802bb0381a89f512a19867a3b8d5b52ea1
Showing with 119 additions and 0 deletions.
  1. +119 −0 test/simple/test-crypto-padding.js
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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var common = require('../common');
var assert = require('assert');

try {
var crypto = require('crypto');
} catch (e) {
console.log('Not compiled with OPENSSL support.');
process.exit();
}


/*
* Input data
*/

var ODD_LENGTH_PLAIN = 'Hello node world!',
EVEN_LENGTH_PLAIN = 'Hello node world!AbC09876dDeFgHi';

var KEY_PLAIN = 'S3c.r.e.t.K.e.Y!',
IV_PLAIN = 'blahFizz2011Buzz';

var CIPHER_NAME = 'aes-128-cbc';


/*
* Expected result data
*/

// echo -n 'Hello node world!' | openssl enc -aes-128-cbc -e -K 5333632e722e652e742e4b2e652e5921 -iv 626c616846697a7a3230313142757a7a | xxd -p -c256
var ODD_LENGTH_ENCRYPTED = '7f57859550d4d2fdb9806da2a750461a9fe77253cd1cbd4b07beee4e070d561f';

// echo -n 'Hello node world!AbC09876dDeFgHi' | openssl enc -aes-128-cbc -e -K 5333632e722e652e742e4b2e652e5921 -iv 626c616846697a7a3230313142757a7a | xxd -p -c256
var EVEN_LENGTH_ENCRYPTED = '7f57859550d4d2fdb9806da2a750461ab46e71b3d78ebe2d9684dfc87f7575b9886119866912cb8c7bcaf76c5ebc2378';

// echo -n 'Hello node world!AbC09876dDeFgHi' | openssl enc -aes-128-cbc -e -K 5333632e722e652e742e4b2e652e5921 -iv 626c616846697a7a3230313142757a7a -nopad | xxd -p -c256
var EVEN_LENGTH_ENCRYPTED_NOPAD = '7f57859550d4d2fdb9806da2a750461ab46e71b3d78ebe2d9684dfc87f7575b9';


/*
* Helper wrappers
*/

function enc(plain, pad) {
var encrypt = crypto.createCipheriv(CIPHER_NAME, KEY_PLAIN, IV_PLAIN);
encrypt.setAutoPadding(pad);
var hex = encrypt.update(plain, 'ascii', 'hex');
hex += encrypt.final('hex');
return hex;
}

function dec(encd, pad) {
var decrypt = crypto.createDecipheriv(CIPHER_NAME, KEY_PLAIN, IV_PLAIN);
decrypt.setAutoPadding(pad);
var plain = decrypt.update(encd, 'hex');
plain += decrypt.final('binary');
return plain;
}


/*
* Test encryption
*/

assert.equal(enc(ODD_LENGTH_PLAIN, true), ODD_LENGTH_ENCRYPTED);
assert.equal(enc(EVEN_LENGTH_PLAIN, true), EVEN_LENGTH_ENCRYPTED);

assert.throws(function() {
// input must have block length %
enc(ODD_LENGTH_PLAIN, false);
});

assert.doesNotThrow(function() {
assert.equal(enc(EVEN_LENGTH_PLAIN, false), EVEN_LENGTH_ENCRYPTED_NOPAD);
});


/*
* Test decryption
*/

assert.equal(dec(ODD_LENGTH_ENCRYPTED, true), ODD_LENGTH_PLAIN);
assert.equal(dec(EVEN_LENGTH_ENCRYPTED, true), EVEN_LENGTH_PLAIN);

assert.doesNotThrow(function() {
// returns including original padding
assert.equal(dec(ODD_LENGTH_ENCRYPTED, false).length, 32);
assert.equal(dec(EVEN_LENGTH_ENCRYPTED, false).length, 48);
});

assert.throws(function() {
// must have at least 1 byte of padding (PKCS):
assert.equal(dec(EVEN_LENGTH_ENCRYPTED_NOPAD, true), EVEN_LENGTH_PLAIN);
});

assert.doesNotThrow(function() {
// no-pad encrypted string should return the same:
assert.equal(dec(EVEN_LENGTH_ENCRYPTED_NOPAD, false), EVEN_LENGTH_PLAIN);
});

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