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-rw-r--r--Core/Util/SecureRandom.php116
1 files changed, 0 insertions, 116 deletions
diff --git a/Core/Util/SecureRandom.php b/Core/Util/SecureRandom.php
deleted file mode 100644
index 65722ce..0000000
--- a/Core/Util/SecureRandom.php
+++ /dev/null
@@ -1,116 +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\Util;
-
-use Psr\Log\LoggerInterface;
-
-/**
- * A secure random number generator implementation.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- * @author Johannes M. Schmitt <schmittjoh@gmail.com>
- */
-final class SecureRandom implements SecureRandomInterface
-{
- private $logger;
- private $useOpenSsl;
- private $seed;
- private $seedUpdated;
- private $seedLastUpdatedAt;
- private $seedFile;
-
- /**
- * Constructor.
- *
- * Be aware that a guessable seed will severely compromise the PRNG
- * algorithm that is employed.
- *
- * @param string $seedFile
- * @param LoggerInterface $logger
- */
- public function __construct($seedFile = null, LoggerInterface $logger = null)
- {
- $this->seedFile = $seedFile;
- $this->logger = $logger;
-
- // determine whether to use OpenSSL
- if (!function_exists('random_bytes') && !function_exists('openssl_random_pseudo_bytes')) {
- if (null !== $this->logger) {
- $this->logger->notice('It is recommended that you install the "paragonie/random_compat" library or enable the "openssl" extension for random number generation.');
- }
- $this->useOpenSsl = false;
- } else {
- $this->useOpenSsl = true;
- }
- }
-
- /**
- * {@inheritdoc}
- */
- public function nextBytes($nbBytes)
- {
- if (function_exists('random_bytes')) {
- return random_bytes($nbBytes);
- }
-
- // try OpenSSL
- if ($this->useOpenSsl) {
- $bytes = openssl_random_pseudo_bytes($nbBytes, $strong);
-
- if (false !== $bytes && true === $strong) {
- return $bytes;
- }
-
- if (null !== $this->logger) {
- $this->logger->info('OpenSSL did not produce a secure random number.');
- }
- }
-
- // initialize seed
- if (null === $this->seed) {
- if (null === $this->seedFile) {
- throw new \RuntimeException('You need to specify a file path to store the seed.');
- }
-
- if (is_file($this->seedFile)) {
- list($this->seed, $this->seedLastUpdatedAt) = $this->readSeed();
- } else {
- $this->seed = uniqid(mt_rand(), true);
- $this->updateSeed();
- }
- }
-
- $bytes = '';
- while (strlen($bytes) < $nbBytes) {
- static $incr = 1;
- $bytes .= hash('sha512', $incr++.$this->seed.uniqid(mt_rand(), true).$nbBytes, true);
- $this->seed = base64_encode(hash('sha512', $this->seed.$bytes.$nbBytes, true));
- $this->updateSeed();
- }
-
- return substr($bytes, 0, $nbBytes);
- }
-
- private function readSeed()
- {
- return json_decode(file_get_contents($this->seedFile));
- }
-
- private function updateSeed()
- {
- if (!$this->seedUpdated && $this->seedLastUpdatedAt < time() - mt_rand(1, 10)) {
- file_put_contents($this->seedFile, json_encode(array($this->seed, microtime(true))));
- }
-
- $this->seedUpdated = true;
- }
-}