mirror of https://github.com/sualko/cloud_bbb
45 lines
870 B
PHP
45 lines
870 B
PHP
<?php
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namespace OCA\BigBlueButton;
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use OCP\Security\ICrypto;
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class Crypto {
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/** @var ICrypto */
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private $crypto;
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public function __construct(
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ICrypto $crypto
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) {
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$this->crypto = $crypto;
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}
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public function calculateHMAC(string $message): string {
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if ($message === null) {
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throw new \InvalidArgumentException();
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}
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return $this->encodeBase64UrlSafe(\sha1($this->crypto->calculateHMAC($message), true));
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}
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public function verifyHMAC(string $message, string $mac) {
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if ($message === null || $mac === null) {
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return false;
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}
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$validMac = $this->encodeBase64UrlSafe(\sha1($this->crypto->calculateHMAC($message), true));
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return $validMac === $mac;
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}
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private function encodeBase64UrlSafe(string $data) {
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$b64 = \base64_encode($data);
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if ($b64 === false) {
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return false;
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}
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return \rtrim(\strtr($b64, '+/', '-_'), '=');
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}
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}
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