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// Copyright 2016 The Closure Library Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS-IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/**
* @fileoverview Unit tests for CTR mode for block ciphers.
*/
/** @suppress {extraProvide} */
goog.provide('goog.crypt.CtrTest');
goog.require('goog.crypt');
goog.require('goog.crypt.Aes');
goog.require('goog.crypt.Ctr');
goog.require('goog.testing.jsunit');
goog.setTestOnly('goog.crypt.CtrTest');
/**
* Asserts the given parameters allow encryption and decryption from and to the
* given plaintext/ciphertext.
*
* @param {!Array<number>|!Uint8Array} keyBytes
* @param {!Array<number>|!Uint8Array} initialVectorBytes
* @param {!Array<number>|!Uint8Array} plainTextBytes
* @param {!Array<number>|!Uint8Array} cipherTextBytes
*/
function runCtrAesTest(
keyBytes, initialVectorBytes, plainTextBytes, cipherTextBytes) {
var aes = new goog.crypt.Aes(keyBytes);
var Ctr = new goog.crypt.Ctr(aes);
var encryptedBytes = Ctr.encrypt(plainTextBytes, initialVectorBytes);
assertEquals(
'Encrypted bytes should match cipher text.',
goog.crypt.byteArrayToHex(encryptedBytes),
goog.crypt.byteArrayToHex(cipherTextBytes));
var decryptedBytes = Ctr.decrypt(cipherTextBytes, initialVectorBytes);
assertEquals(
'Decrypted bytes should match plain text.',
goog.crypt.byteArrayToHex(decryptedBytes),
goog.crypt.byteArrayToHex(plainTextBytes));
}
/**
* Asserts goog.crypt.Ctr.incrementBigEndianCounter turns the first parameter
* into the second.
*
* @param {string} toIncrement
* @param {string} expectedResult
*/
function assertIncEquals(toIncrement, expectedResult) {
var counter = goog.crypt.hexToByteArray(toIncrement);
goog.crypt.Ctr.incrementBigEndianCounter_(counter);
assertEquals(expectedResult, goog.crypt.byteArrayToHex(counter));
}
function testIncrementCounter() {
assertIncEquals('', '');
assertIncEquals('00', '01');
assertIncEquals('09', '0a');
assertIncEquals('0e', '0f');
assertIncEquals('0f', '10');
assertIncEquals('1f', '20');
assertIncEquals('ff', '00'); // no length extension
assertIncEquals('0000', '0001');
assertIncEquals('00f0', '00f1');
assertIncEquals('00ff', '0100');
assertIncEquals('0f00', '0f01');
assertIncEquals('0fff', '1000');
assertIncEquals('1000', '1001');
assertIncEquals('ff00', 'ff01');
assertIncEquals('ff0f', 'ff10');
assertIncEquals('ffff', '0000');
assertIncEquals(
'ffffffffffffffffffffffffffffffffffffffffffffffff',
'000000000000000000000000000000000000000000000000');
}
function testAes128CtrCipherAlgorithm() {
// Test vectors from NIST sp800-38a, p 55
// http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
// Case #1, no chaining
runCtrAesTest(
goog.crypt.hexToByteArray('2b7e151628aed2a6abf7158809cf4f3c'),
goog.crypt.hexToByteArray('f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff'),
goog.crypt.hexToByteArray('6bc1bee22e409f96e93d7e117393172a'),
goog.crypt.hexToByteArray('874d6191b620e3261bef6864990db6ce'));
// Case #2, three blocks
runCtrAesTest(
goog.crypt.hexToByteArray('2b7e151628aed2a6abf7158809cf4f3c'),
goog.crypt.hexToByteArray('f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff'),
goog.crypt.hexToByteArray(
'6bc1bee22e409f96e93d7e117393172a' +
'ae2d8a571e03ac9c9eb76fac45af8e51' +
'30c81c46a35ce411e5fbc1191a0a52ef'),
goog.crypt.hexToByteArray(
'874d6191b620e3261bef6864990db6ce' +
'9806f66b7970fdff8617187bb9fffdff' +
'5ae4df3edbd5d35e5b4f09020db03eab'));
// Case #3, plaintext length not a multiple of blocksize
runCtrAesTest(
goog.crypt.hexToByteArray('2b7e151628aed2a6abf7158809cf4f3c'),
goog.crypt.hexToByteArray('f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff'),
goog.crypt.hexToByteArray(
'6bc1bee22e409f96e93d7e117393172a' +
'ae2d8a571e03ac9c9eb76fac45af8e51' +
'30c81c'),
goog.crypt.hexToByteArray(
'874d6191b620e3261bef6864990db6ce' +
'9806f66b7970fdff8617187bb9fffdff' +
'5ae4df'));
}
function testAes192CtrCipherAlgorithm() {
// Test vectors from NIST sp800-38a, p 56
// http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
// Key block is weird, that's normal: 192 is one block and a half.
// Case #1, no chaining
runCtrAesTest(
goog.crypt.hexToByteArray(
'8e73b0f7da0e6452c810f32b809079e5' +
'62f8ead2522c6b7b'),
goog.crypt.hexToByteArray('f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff'),
goog.crypt.hexToByteArray('6bc1bee22e409f96e93d7e117393172a'),
goog.crypt.hexToByteArray('1abc932417521ca24f2b0459fe7e6e0b'));
// Case #2, three blocks
runCtrAesTest(
goog.crypt.hexToByteArray(
'8e73b0f7da0e6452c810f32b809079e5' +
'62f8ead2522c6b7b'),
goog.crypt.hexToByteArray('f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff'),
goog.crypt.hexToByteArray(
'6bc1bee22e409f96e93d7e117393172a' +
'ae2d8a571e03ac9c9eb76fac45af8e51' +
'30c81c46a35ce411e5fbc1191a0a52ef'),
goog.crypt.hexToByteArray(
'1abc932417521ca24f2b0459fe7e6e0b' +
'090339ec0aa6faefd5ccc2c6f4ce8e94' +
'1e36b26bd1ebc670d1bd1d665620abf7'));
}
function testAes256CtrCipherAlgorithm() {
// Test vectors from NIST sp800-38a, p 57
// http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf
// Case #1, no chaining
runCtrAesTest(
goog.crypt.hexToByteArray(
'603deb1015ca71be2b73aef0857d7781' +
'1f352c073b6108d72d9810a30914dff4'),
goog.crypt.hexToByteArray('f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff'),
goog.crypt.hexToByteArray('6bc1bee22e409f96e93d7e117393172a'),
goog.crypt.hexToByteArray('601ec313775789a5b7a7f504bbf3d228'));
// Case #2, three blocks
runCtrAesTest(
goog.crypt.hexToByteArray(
'603deb1015ca71be2b73aef0857d7781' +
'1f352c073b6108d72d9810a30914dff4'),
goog.crypt.hexToByteArray('f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff'),
goog.crypt.hexToByteArray(
'6bc1bee22e409f96e93d7e117393172a' +
'ae2d8a571e03ac9c9eb76fac45af8e51' +
'30c81c46a35ce411e5fbc1191a0a52ef'),
goog.crypt.hexToByteArray(
'601ec313775789a5b7a7f504bbf3d228' +
'f443e3ca4d62b59aca84e990cacaf5c5' +
'2b0930daa23de94ce87017ba2d84988d'));
// Case #3, plaintext length not a multiple of blocksize
runCtrAesTest(
goog.crypt.hexToByteArray(
'603deb1015ca71be2b73aef0857d7781' +
'1f352c073b6108d72d9810a30914dff4'),
goog.crypt.hexToByteArray('f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff'),
goog.crypt.hexToByteArray(
'6bc1bee22e409f96e93d7e117393172a' +
'ae2d8a571e03ac9c9eb76fac45af8e51' +
'30c81c46a35ce411e5fbc1191a0a52'),
goog.crypt.hexToByteArray(
'601ec313775789a5b7a7f504bbf3d228' +
'f443e3ca4d62b59aca84e990cacaf5c5' +
'2b0930daa23de94ce87017ba2d8498'));
}
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