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<?php
declare(strict_types=1);
/*
* This file is part of Badcow DNS Library.
*
* (c) Samuel Williams <sam@badcow.co>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Badcow\DNS;
/**
* Algorithms listed in {@link https://www.iana.org/assignments/dns-sec-alg-numbers/dns-sec-alg-numbers.xml}.
*/
class Algorithms
{
/**
* Delete DS.
*
* {@link https://tools.ietf.org/html/rfc8078#section-4}
*/
public const DELETE = 0;
/**
* RSA/MD5.
*
* {@link https://tools.ietf.org/html/rfc4034#appendix-A.1}
*/
public const RSAMD5 = 1;
/**
* Diffie-Hellman.
*
* {@link https://tools.ietf.org/html/rfc4034#appendix-A.1}
*/
public const DH = 2;
/**
* DSA/SHA-1.
*
* {@link https://tools.ietf.org/html/rfc4034#appendix-A.1}
*/
public const DSA = 3;
/**
* Elliptic Curve (Proposed).
*
* {@link https://tools.ietf.org/html/rfc4034#appendix-A.1}
*/
public const ECC = 4;
/**
* RSA/SHA-1.
*
* {@link https://tools.ietf.org/html/rfc4034#appendix-A.1}
*/
public const RSASHA1 = 5;
/**
* DSA-NSEC3-SHA1.
*
* {@link https://tools.ietf.org/html/RFC5155}
*/
public const DSA_NSEC3_SHA1 = 6;
/**
* RSASHA1-NSEC3-SHA1.
*
* {@link https://tools.ietf.org/html/RFC5155}
*/
public const RSASHA1_NSEC3_SHA1 = 7;
/**
* RSA/SHA-256.
*
* {@link https://tools.ietf.org/html/RFC5702}
*/
public const RSASHA256 = 8;
/**
* RSA/SHA-512.
*
* {@link https://tools.ietf.org/html/RFC5702}.
*/
public const RSASHA512 = 10;
/**
* GOST R 34.10-2001.
*
* {@link https://tools.ietf.org/html/RFC5933}.
*/
public const ECC_GOST = 12;
/**
* ECDSA Curve P-256 with SHA-256.
*
* {@link https://tools.ietf.org/html/RFC6605}.
*/
public const ECDSAP256SHA256 = 13;
/**
* ECDSA Curve P-384 with SHA-384.
*
* {@link https://tools.ietf.org/html/RFC6605}.
*/
public const ECDSAP384SHA384 = 14;
/**
* Ed25519.
*
* {@link https://tools.ietf.org/html/RFC8080}.
*/
public const ED25519 = 15;
/**
* Ed448.
*
* {@link https://tools.ietf.org/html/RFC8080}.
*/
public const ED448 = 16;
/**
* Indirect.
*
* {@link https://tools.ietf.org/html/rfc4034#appendix-A.1}
*/
public const INDIRECT = 252;
/**
* Private.
*
* {@link https://tools.ietf.org/html/rfc4034#appendix-A.1}
*/
public const PRIVATEDNS = 253;
/**
* Private.
*
* {@link https://tools.ietf.org/html/rfc4034#appendix-A.1}
*/
public const PRIVATEOID = 254;
/**
* @var array
*/
public const MNEMONICS = [
self::DELETE => 'DELETE',
self::RSAMD5 => 'RSAMD5',
self::DH => 'DH',
self::DSA => 'DSA',
self::ECC => 'ECC',
self::RSASHA1 => 'RSASHA1',
self::DSA_NSEC3_SHA1 => 'DSA-NSEC3-SHA1',
self::RSASHA1_NSEC3_SHA1 => 'RSASHA1-NSEC3-SHA1',
self::RSASHA256 => 'RSASHA256',
self::RSASHA512 => 'RSASHA512',
self::ECC_GOST => 'ECC-GOST',
self::ECDSAP256SHA256 => 'ECDSAP256SHA256',
self::ECDSAP384SHA384 => 'ECDSAP384SHA384',
self::ED25519 => 'ED25519',
self::ED448 => 'ED448',
self::INDIRECT => 'INDIRECT',
self::PRIVATEDNS => 'PRIVATEDNS',
self::PRIVATEOID => 'PRIVATEOID',
];
/**
* Get the associated mnemonic of an algorithm.
*
* @return string
*
* @throws \InvalidArgumentException
*/
public static function getMnemonic(int $algorithmId)
{
if (!array_key_exists($algorithmId, self::MNEMONICS)) {
throw new \InvalidArgumentException(sprintf('"%d" is not a valid algorithm.', $algorithmId));
}
return self::MNEMONICS[$algorithmId];
}
/**
* @throws \InvalidArgumentException
*/
public static function getAlgorithmValue(string $algorithmMnemonic): int
{
if (false === $keyTypeValue = array_search($algorithmMnemonic, self::MNEMONICS, true)) {
throw new \InvalidArgumentException(sprintf('"%s" is not a valid algorithm mnemonic.', $algorithmMnemonic));
}
return (int) $keyTypeValue;
}
}