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SecurityTest.php
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SecurityTest.php
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<?php
/**
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @since 1.2.0
* @license http://www.opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Test\TestCase\Utility;
use Cake\TestSuite\TestCase;
use Cake\Utility\Crypto\Mcrypt;
use Cake\Utility\Crypto\OpenSsl;
use Cake\Utility\Security;
/**
* SecurityTest class
*
*/
class SecurityTest extends TestCase
{
/**
* testHash method
*
* @return void
*/
public function testHash()
{
$_hashType = Security::$hashType;
$key = 'someKey';
$hash = 'someHash';
$this->assertSame(40, strlen(Security::hash($key, null, false)));
$this->assertSame(40, strlen(Security::hash($key, 'sha1', false)));
$this->assertSame(40, strlen(Security::hash($key, null, true)));
$this->assertSame(40, strlen(Security::hash($key, 'sha1', true)));
$result = Security::hash($key, null, $hash);
$this->assertSame($result, 'e38fcb877dccb6a94729a81523851c931a46efb1');
$result = Security::hash($key, 'sha1', $hash);
$this->assertSame($result, 'e38fcb877dccb6a94729a81523851c931a46efb1');
$hashType = 'sha1';
Security::setHash($hashType);
$this->assertSame($hashType, Security::$hashType);
$this->assertSame(40, strlen(Security::hash($key, null, true)));
$this->assertSame(40, strlen(Security::hash($key, null, false)));
$this->assertSame(32, strlen(Security::hash($key, 'md5', false)));
$this->assertSame(32, strlen(Security::hash($key, 'md5', true)));
$hashType = 'md5';
Security::setHash($hashType);
$this->assertSame($hashType, Security::$hashType);
$this->assertSame(32, strlen(Security::hash($key, null, false)));
$this->assertSame(32, strlen(Security::hash($key, null, true)));
$this->assertSame(64, strlen(Security::hash($key, 'sha256', false)));
$this->assertSame(64, strlen(Security::hash($key, 'sha256', true)));
Security::setHash($_hashType);
}
/**
* testRijndael method
*
* @return void
*/
public function testRijndael()
{
$this->skipIf(!function_exists('mcrypt_encrypt'));
$engine = Security::engine();
Security::engine(new Mcrypt());
$txt = 'The quick brown fox jumped over the lazy dog.';
$key = 'DYhG93b0qyJfIxfs2guVoUubWwvniR2G0FgaC9mi';
$result = Security::rijndael($txt, $key, 'encrypt');
$this->assertEquals($txt, Security::rijndael($result, $key, 'decrypt'));
$result = Security::rijndael('', $key, 'encrypt');
$this->assertEquals('', Security::rijndael($result, $key, 'decrypt'));
$key = 'this is my key of over 32 chars, yes it is';
$result = Security::rijndael($txt, $key, 'encrypt');
$this->assertEquals($txt, Security::rijndael($result, $key, 'decrypt'));
Security::engine($engine);
}
/**
* testRijndaelInvalidOperation method
*
* @expectedException \InvalidArgumentException
* @return void
*/
public function testRijndaelInvalidOperation()
{
$txt = 'The quick brown fox jumped over the lazy dog.';
$key = 'DYhG93b0qyJfIxfs2guVoUubWwvniR2G0FgaC9mi';
Security::rijndael($txt, $key, 'foo');
}
/**
* testRijndaelInvalidKey method
*
* @expectedException \InvalidArgumentException
* @return void
*/
public function testRijndaelInvalidKey()
{
$txt = 'The quick brown fox jumped over the lazy dog.';
$key = 'too small';
Security::rijndael($txt, $key, 'encrypt');
}
/**
* Test encrypt/decrypt.
*
* @return void
*/
public function testEncryptDecrypt()
{
$txt = 'The quick brown fox';
$key = 'This key is longer than 32 bytes long.';
$result = Security::encrypt($txt, $key);
$this->assertNotEquals($txt, $result, 'Should be encrypted.');
$this->assertNotEquals($result, Security::encrypt($txt, $key), 'Each result is unique.');
$this->assertEquals($txt, Security::decrypt($result, $key));
}
/**
* Test that changing the key causes decryption to fail.
*
* @return void
*/
public function testDecryptKeyFailure()
{
$txt = 'The quick brown fox';
$key = 'This key is longer than 32 bytes long.';
$result = Security::encrypt($txt, $key);
$key = 'Not the same key. This one will fail';
$this->assertFalse(Security::decrypt($txt, $key), 'Modified key will fail.');
}
/**
* Test that decrypt fails when there is an hmac error.
*
* @return void
*/
public function testDecryptHmacFailure()
{
$txt = 'The quick brown fox';
$key = 'This key is quite long and works well.';
$salt = 'this is a delicious salt!';
$result = Security::encrypt($txt, $key, $salt);
// Change one of the bytes in the hmac.
$result[10] = 'x';
$this->assertFalse(Security::decrypt($result, $key, $salt), 'Modified hmac causes failure.');
}
/**
* Test that changing the hmac salt will cause failures.
*
* @return void
*/
public function testDecryptHmacSaltFailure()
{
$txt = 'The quick brown fox';
$key = 'This key is quite long and works well.';
$salt = 'this is a delicious salt!';
$result = Security::encrypt($txt, $key, $salt);
$salt = 'humpty dumpty had a great fall.';
$this->assertFalse(Security::decrypt($result, $key, $salt), 'Modified salt causes failure.');
}
/**
* Test that short keys cause errors
*
* @expectedException \InvalidArgumentException
* @expectedExceptionMessage Invalid key for encrypt(), key must be at least 256 bits (32 bytes) long.
* @return void
*/
public function testEncryptInvalidKey()
{
$txt = 'The quick brown fox jumped over the lazy dog.';
$key = 'this is too short';
Security::encrypt($txt, $key);
}
/**
* Test encrypting falsey data
*
* @return void
*/
public function testEncryptDecryptFalseyData()
{
$key = 'This is a key that is long enough to be ok.';
$result = Security::encrypt('', $key);
$this->assertSame('', Security::decrypt($result, $key));
$result = Security::encrypt(false, $key);
$this->assertSame('', Security::decrypt($result, $key));
$result = Security::encrypt(null, $key);
$this->assertSame('', Security::decrypt($result, $key));
$result = Security::encrypt(0, $key);
$this->assertSame('0', Security::decrypt($result, $key));
$result = Security::encrypt('0', $key);
$this->assertSame('0', Security::decrypt($result, $key));
}
/**
* Test that short keys cause errors
*
* @expectedException \InvalidArgumentException
* @expectedExceptionMessage Invalid key for decrypt(), key must be at least 256 bits (32 bytes) long.
* @return void
*/
public function testDecryptInvalidKey()
{
$txt = 'The quick brown fox jumped over the lazy dog.';
$key = 'this is too short';
Security::decrypt($txt, $key);
}
/**
* Test that empty data cause errors
*
* @expectedException \InvalidArgumentException
* @expectedExceptionMessage The data to decrypt cannot be empty.
* @return void
*/
public function testDecryptInvalidData()
{
$txt = '';
$key = 'This is a key that is long enough to be ok.';
Security::decrypt($txt, $key);
}
/**
* Test that values encrypted with open ssl can be decrypted with mcrypt and the reverse.
*
* @return void
*/
public function testEngineEquivalence()
{
$this->skipIf(!defined('MCRYPT_RIJNDAEL_128'), 'This needs mcrypt extension to be loaded.');
$restore = Security::engine();
$txt = "Obi-wan you're our only hope";
$key = 'This is my secret key phrase it is quite long.';
$salt = 'A tasty salt that is delicious';
Security::engine(new Mcrypt());
$cipher = Security::encrypt($txt, $key, $salt);
$this->assertEquals($txt, Security::decrypt($cipher, $key, $salt));
Security::engine(new OpenSsl());
$this->assertEquals($txt, Security::decrypt($cipher, $key, $salt));
Security::engine(new OpenSsl());
$cipher = Security::encrypt($txt, $key, $salt);
$this->assertEquals($txt, Security::decrypt($cipher, $key, $salt));
Security::engine(new Mcrypt());
$this->assertEquals($txt, Security::decrypt($cipher, $key, $salt));
}
/**
* Tests that the salt can be set and retrieved
*
* @return void
*/
public function testSalt()
{
Security::salt('foobarbaz');
$this->assertEquals('foobarbaz', Security::salt());
}
/**
* Test the randomBytes method.
*
* @return void
*/
public function testRandomBytes()
{
$value = Security::randomBytes(16);
$this->assertSame(16, strlen($value));
$value = Security::randomBytes(64);
$this->assertSame(64, strlen($value));
$this->assertRegExp('/[^0-9a-f]/', $value, 'should return a binary string');
}
/**
* Test the insecureRandomBytes method
*
* @return void
*/
public function testInsecureRandomBytes()
{
$value = Security::insecureRandomBytes(16);
$this->assertSame(16, strlen($value));
$value = Security::insecureRandomBytes(64);
$this->assertSame(64, strlen($value));
$this->assertRegExp('/[^0-9a-f]/', $value, 'should return a binary string');
}
}