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33 lines
568 B
PHP
33 lines
568 B
PHP
<?php
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namespace Mpdf\Pdf\Protection;
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class UniqidGenerator
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{
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public function __construct()
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{
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if (!function_exists('random_int') || !function_exists('random_bytes')) {
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throw new \Mpdf\MpdfException(
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'Unable to set PDF file protection, CSPRNG Functions are not available. '
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. 'Use paragonie/random_compat polyfill or upgrade to PHP 7.'
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);
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}
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}
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/**
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* @return string
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*/
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public function generate()
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{
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$chars = 'ABCDEF1234567890';
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$id = '';
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for ($i = 0; $i < 32; $i++) {
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$id .= $chars[random_int(0, 15)];
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}
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return md5($id);
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}
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}
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