defender-security / src / component / altcha / Hasher / class-algorithm.php

class-algorithm.php in Defender Security – Malware Scanner, Login Security & Firewall 6.3.0, at src/component/altcha/Hasher/class-algorithm.php

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1	<?php
2	/**
3	* The Algorithm class for hashing algorithms.
4	*
5	* @package WP_Defender\Component\Altcha\Hasher
6	*/
7
8	namespace WP_Defender\Component\Altcha\Hasher;
9
10	/**
11	* Class Algorithm
12	*/
13	final class Algorithm {
14	public const SHA1 = 'SHA-1';
15	public const SHA256 = 'SHA-256';
16	public const SHA512 = 'SHA-512';
17
18	/**
19	* Tries to check if the given value is a valid algorithm.
20	*
21	* @param string\|null $value The algorithm value.
22	*
23	* @return string\|null The valid algorithm or null if invalid.
24	*/
25	public static function try_from( ?string $value ): ?string {
26	if ( null === $value ) {
27	return null;
28	}
29
30	return self::is_valid( $value ) ? $value : null;
31	}
32
33	/**
34	* Checks if the given value is a valid algorithm.
35	*
36	* @param string $value The algorithm value.
37	*
38	* @return bool True if valid, false otherwise.
39	*/
40	public static function is_valid( string $value ): bool {
41	return in_array(
42	$value,
43	array(
44	self::SHA1,
45	self::SHA256,
46	self::SHA512,
47	),
48	true
49	);
50	}
51	}
52