HMAC::getKey() - Code Metrics - web-token/jwt-framework - Measure and Improve Code Quality continuously with Scrutinizer

HMAC::getKey() A
last analyzed 2019-10-31 23:09 UTC

↳ Parent: HMAC

Complexity

Conditions	4
Paths	4

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	15
rs	9.7666
c	0
b	0
f	0
cc	4
nc	4
nop	1

<?php

declare(strict_types=1);

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2014-2019 Spomky-Labs
 *
 * This software may be modified and distributed under the terms
 * of the MIT license.  See the LICENSE file for details.
 */

namespace Jose\Component\Signature\Algorithm;

use Base64Url\Base64Url;
use InvalidArgumentException;
use Jose\Component\Core\JWK;

abstract class HMAC implements MacAlgorithm
{
    public function allowedKeyTypes(): array
    {
        return ['oct'];
    }

    public function verify(JWK $key, string $input, string $signature): bool
    {
        return hash_equals($this->hash($key, $input), $signature);
    }

    public function hash(JWK $key, string $input): string
    {
        $k = $this->getKey($key);

        return hash_hmac($this->getHashAlgorithm(), $input, $k, true);
    }

    /**
     * @throws InvalidArgumentException if the key is invalid
     */
    protected function getKey(JWK $key): string
    {
        if (!\in_array($key->get('kty'), $this->allowedKeyTypes(), true)) {
            throw new InvalidArgumentException('Wrong key type.');
        }
        if (!$key->has('k')) {
            throw new InvalidArgumentException('The key parameter "k" is missing.');
        }
        $k = $key->get('k');
        if (!\is_string($k)) {
            throw new InvalidArgumentException('The key parameter "k" is invalid.');
        }

        return Base64Url::decode($k);
    }

    abstract protected function getHashAlgorithm(): string;
}


1			<?php
2
3			declare(strict_types=1);
4
5			/*
6			* The MIT License (MIT)
7			*
8			* Copyright (c) 2014-2019 Spomky-Labs
9			*
10			* This software may be modified and distributed under the terms
11			* of the MIT license. See the LICENSE file for details.
12			*/
13
14			namespace Jose\Component\Signature\Algorithm;
15
16			use Base64Url\Base64Url;
17			use InvalidArgumentException;
18			use Jose\Component\Core\JWK;
19
20			abstract class HMAC implements MacAlgorithm
21			{
22			public function allowedKeyTypes(): array
23			{
24			return ['oct'];
25			}
26
27			public function verify(JWK $key, string $input, string $signature): bool
28			{
29			return hash_equals($this->hash($key, $input), $signature);
30			}
31
32			public function hash(JWK $key, string $input): string
33			{
34			$k = $this->getKey($key);
35
36			return hash_hmac($this->getHashAlgorithm(), $input, $k, true);
37			}
38
39			/**
40			* @throws InvalidArgumentException if the key is invalid
41			*/
42			protected function getKey(JWK $key): string
43			{
44			if (!\in_array($key->get('kty'), $this->allowedKeyTypes(), true)) {
45			throw new InvalidArgumentException('Wrong key type.');
46			}
47			if (!$key->has('k')) {
48			throw new InvalidArgumentException('The key parameter "k" is missing.');
49			}
50			$k = $key->get('k');
51			if (!\is_string($k)) {
52			throw new InvalidArgumentException('The key parameter "k" is invalid.');
53			}
54
55			return Base64Url::decode($k);
56			}
57
58			abstract protected function getHashAlgorithm(): string;
59			}
60

web-token / jwt-framework

HMAC::getKey() A last analyzed 2019-10-31 23:09 UTC

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HMAC::getKey() A
last analyzed 2019-10-31 23:09 UTC