diff options
Diffstat (limited to 'Core/Tests')
| -rw-r--r-- | Core/Tests/Util/SecureRandomTest.php | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/Core/Tests/Util/SecureRandomTest.php b/Core/Tests/Util/SecureRandomTest.php deleted file mode 100644 index 2e94cc1..0000000 --- a/Core/Tests/Util/SecureRandomTest.php +++ /dev/null @@ -1,201 +0,0 @@ -<?php - -/* - * This file is part of the Symfony package. - * - * (c) Fabien Potencier <fabien@symfony.com> - * - * For the full copyright and license information, please view the LICENSE - * file that was distributed with this source code. - */ - -namespace Symfony\Component\Security\Core\Tests\Util; - -use Symfony\Component\Security\Core\Util\SecureRandom; - -class SecureRandomTest extends \PHPUnit_Framework_TestCase -{ - /** - * T1: Monobit test. - * - * @dataProvider getSecureRandoms - */ - public function testMonobit($secureRandom) - { - $nbOnBits = substr_count($this->getBitSequence($secureRandom, 20000), '1'); - $this->assertTrue($nbOnBits > 9654 && $nbOnBits < 10346, 'Monobit test failed, number of turned on bits: '.$nbOnBits); - } - - /** - * T2: Chi-square test with 15 degrees of freedom (chi-Quadrat-Anpassungstest). - * - * @dataProvider getSecureRandoms - */ - public function testPoker($secureRandom) - { - $b = $this->getBitSequence($secureRandom, 20000); - $c = array(); - for ($i = 0; $i <= 15; ++$i) { - $c[$i] = 0; - } - - for ($j = 1; $j <= 5000; ++$j) { - $k = 4 * $j - 1; - ++$c[8 * $b[$k - 3] + 4 * $b[$k - 2] + 2 * $b[$k - 1] + $b[$k]]; - } - - $f = 0; - for ($i = 0; $i <= 15; ++$i) { - $f += $c[$i] * $c[$i]; - } - - $Y = 16 / 5000 * $f - 5000; - - $this->assertTrue($Y > 1.03 && $Y < 57.4, 'Poker test failed, Y = '.$Y); - } - - /** - * Run test. - * - * @dataProvider getSecureRandoms - */ - public function testRun($secureRandom) - { - $b = $this->getBitSequence($secureRandom, 20000); - - $runs = array(); - for ($i = 1; $i <= 6; ++$i) { - $runs[$i] = 0; - } - - $addRun = function ($run) use (&$runs) { - if ($run > 6) { - $run = 6; - } - - ++$runs[$run]; - }; - - $currentRun = 0; - $lastBit = null; - for ($i = 0; $i < 20000; ++$i) { - if ($lastBit === $b[$i]) { - ++$currentRun; - } else { - if ($currentRun > 0) { - $addRun($currentRun); - } - - $lastBit = $b[$i]; - $currentRun = 0; - } - } - if ($currentRun > 0) { - $addRun($currentRun); - } - - $this->assertTrue($runs[1] > 2267 && $runs[1] < 2733, 'Runs of length 1 outside of defined interval: '.$runs[1]); - $this->assertTrue($runs[2] > 1079 && $runs[2] < 1421, 'Runs of length 2 outside of defined interval: '.$runs[2]); - $this->assertTrue($runs[3] > 502 && $runs[3] < 748, 'Runs of length 3 outside of defined interval: '.$runs[3]); - $this->assertTrue($runs[4] > 233 && $runs[4] < 402, 'Runs of length 4 outside of defined interval: '.$runs[4]); - $this->assertTrue($runs[5] > 90 && $runs[5] < 223, 'Runs of length 5 outside of defined interval: '.$runs[5]); - $this->assertTrue($runs[6] > 90 && $runs[6] < 233, 'Runs of length 6 outside of defined interval: '.$runs[6]); - } - - /** - * Long-run test. - * - * @dataProvider getSecureRandoms - */ - public function testLongRun($secureRandom) - { - $b = $this->getBitSequence($secureRandom, 20000); - - $longestRun = $currentRun = 0; - $lastBit = null; - for ($i = 0; $i < 20000; ++$i) { - if ($lastBit === $b[$i]) { - ++$currentRun; - } else { - if ($currentRun > $longestRun) { - $longestRun = $currentRun; - } - $lastBit = $b[$i]; - $currentRun = 0; - } - } - if ($currentRun > $longestRun) { - $longestRun = $currentRun; - } - - $this->assertTrue($longestRun < 34, 'Failed longest run test: '.$longestRun); - } - - /** - * Serial Correlation (Autokorrelationstest). - * - * @dataProvider getSecureRandoms - */ - public function testSerialCorrelation($secureRandom) - { - $shift = mt_rand(1, 5000); - $b = $this->getBitSequence($secureRandom, 20000); - - $Z = 0; - for ($i = 0; $i < 5000; ++$i) { - $Z += $b[$i] === $b[$i + $shift] ? 1 : 0; - } - - $this->assertTrue($Z > 2326 && $Z < 2674, 'Failed serial correlation test: '.$Z); - } - - public function getSecureRandoms() - { - $secureRandoms = array(); - - // only add if openssl is indeed present - $secureRandom = new SecureRandom(); - if ($this->hasOpenSsl($secureRandom)) { - $secureRandoms[] = array($secureRandom); - } - - // no-openssl with custom seed provider - $secureRandom = new SecureRandom(sys_get_temp_dir().'/_sf2.seed'); - $this->disableOpenSsl($secureRandom); - $secureRandoms[] = array($secureRandom); - - return $secureRandoms; - } - - protected function disableOpenSsl($secureRandom) - { - $ref = new \ReflectionProperty($secureRandom, 'useOpenSsl'); - $ref->setAccessible(true); - $ref->setValue($secureRandom, false); - $ref->setAccessible(false); - } - - protected function hasOpenSsl($secureRandom) - { - $ref = new \ReflectionProperty($secureRandom, 'useOpenSsl'); - $ref->setAccessible(true); - - $ret = $ref->getValue($secureRandom); - - $ref->setAccessible(false); - - return $ret; - } - - private function getBitSequence($secureRandom, $length) - { - $bitSequence = ''; - for ($i = 0; $i < $length; $i += 40) { - $value = unpack('H*', $secureRandom->nextBytes(5)); - $value = str_pad(base_convert($value[1], 16, 2), 40, '0', STR_PAD_LEFT); - $bitSequence .= $value; - } - - return substr($bitSequence, 0, $length); - } -} |