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robthree
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twofactorauth
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lib
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Providers
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Rng
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File: OpenSSLRNGProvider.php
<?php namespace RobThree\Auth\Providers\Rng; class OpenSSLRNGProvider implements IRNGProvider { /** @var bool */ private $requirestrong; /** * @param bool $requirestrong */ public function __construct($requirestrong = true) { $this->requirestrong = $requirestrong; } /** * {@inheritdoc} */ public function getRandomBytes($bytecount) { $result = openssl_random_pseudo_bytes($bytecount, $crypto_strong); if ($this->requirestrong && ($crypto_strong === false)) { throw new RNGException('openssl_random_pseudo_bytes returned non-cryptographically strong value'); } if ($result === false) { throw new RNGException('openssl_random_pseudo_bytes returned an invalid value'); } return $result; } /** * {@inheritdoc} */ public function isCryptographicallySecure() { return $this->requirestrong; } }