League\OAuth2\Server\CodeChallengeVerifiers\S256Verifier

Complexity

Total Complexity

2

Size/Duplication

Total Lines	28
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	0

Test Coverage

Coverage

100%

Importance

Changes

0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	getMethod()	0	4	1
A	verifyCodeChallenge()	0	7	1

<?php
/**
 * @author      Lukáš Unger <lookymsc@gmail.com>
 * @copyright   Copyright (c) Lukáš Unger
 * @license     http://mit-license.org/
 *
 * @link        https://github.com/thephpleague/oauth2-server
 */

namespace League\OAuth2\Server\CodeChallengeVerifiers;

class S256Verifier implements CodeChallengeVerifierInterface
{
    /**
     * Return code challenge method.
     *
     * @return string
     */
    public function getMethod()
    {
        return 'S256';
    }

    /**
     * Verify the code challenge.
     *
     * @param string $codeVerifier
     * @param string $codeChallenge
     *
     * @return bool
     */
    public function verifyCodeChallenge($codeVerifier, $codeChallenge)
    {
        return hash_equals(
            strtr(rtrim(base64_encode(hash('sha256', $codeVerifier, true)), '='), '+/', '-_'),
            $codeChallenge
        );
    }
}