50 lines
1.1 KiB
PHP
50 lines
1.1 KiB
PHP
<?php
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namespace Gist\Service;
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use InvalidArgumentException;
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/**
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* Class SaltGenerator.
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*
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* @author Simon Vieille <simon@deblan.fr>
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*/
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class SaltGenerator
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{
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/**
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* Generates a random salt.
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*
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* @param int $length
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*
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* @return string
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*/
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public function generate($length = 32, $isApiKey = false)
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{
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if (!is_numeric($length)) {
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throw new InvalidArgumentException('Paramter length must be a valid integer.');
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}
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if (function_exists('openssl_random_pseudo_bytes')) {
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$string = base64_encode(openssl_random_pseudo_bytes(256));
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}
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if (function_exists('mcrypt_create_iv')) {
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$string = base64_encode(mcrypt_create_iv(256, MCRYPT_DEV_URANDOM));
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}
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if (!empty($string)) {
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if (true === $isApiKey) {
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$string = str_replace(
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array('+', '%', '/', '#', '&'),
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'',
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$string
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);
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}
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return substr($string, 0, $length);
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}
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throw new RuntimeException('You must enable openssl or mcrypt modules.');
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}
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}
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