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<?php
/**
* This file is part of Lcobucci\JWT, a simple library to handle JWT and JWS
*
* @license http://opensource.org/licenses/BSD-3-Clause BSD-3-Clause
*/
namespace Lcobucci\JWT\Signer\Ecdsa;
use InvalidArgumentException;
use Lcobucci\JWT\Signer\Key;
use Mdanter\Ecc\Math\MathAdapterInterface;
use Mdanter\Ecc\Serializer\PrivateKey\DerPrivateKeySerializer;
use Mdanter\Ecc\Serializer\PrivateKey\PemPrivateKeySerializer;
use Mdanter\Ecc\Serializer\PrivateKey\PrivateKeySerializerInterface;
use Mdanter\Ecc\Serializer\PublicKey\DerPublicKeySerializer;
use Mdanter\Ecc\Serializer\PublicKey\PemPublicKeySerializer;
use Mdanter\Ecc\Serializer\PublicKey\PublicKeySerializerInterface;
/**
* Base class for ECDSA signers
*
* @internal
*
* @author Luís Otávio Cobucci Oblonczyk <lcobucci@gmail.com>
* @since 3.0.4
*/
class KeyParser
{
/**
* @var PrivateKeySerializerInterface
*/
private $privateKeySerializer;
/**
* @var PublicKeySerializerInterface
*/
private $publicKeySerializer;
/**
* @param MathAdapterInterface $adapter
* @param PrivateKeySerializerInterface $privateKeySerializer
* @param PublicKeySerializerInterface $publicKeySerializer
*/
public function __construct(
MathAdapterInterface $adapter,
PrivateKeySerializerInterface $privateKeySerializer = null,
PublicKeySerializerInterface $publicKeySerializer = null
) {
$this->privateKeySerializer = $privateKeySerializer ?: new PemPrivateKeySerializer(new DerPrivateKeySerializer($adapter));
$this->publicKeySerializer = $publicKeySerializer ?: new PemPublicKeySerializer(new DerPublicKeySerializer($adapter));
}
/**
* Parses a public key from the given PEM content
*
* @param Key $key
*
* @return \Mdanter\Ecc\Crypto\Key\PublicKeyInterface
*/
public function getPublicKey(Key $key)
{
return $this->publicKeySerializer->parse($this->getKeyContent($key, 'PUBLIC KEY'));
}
/**
* Parses a private key from the given PEM content
*
* @param Key $key
*
* @return \Mdanter\Ecc\Crypto\Key\PrivateKeyInterface
*/
public function getPrivateKey(Key $key)
{
return $this->privateKeySerializer->parse($this->getKeyContent($key, 'EC PRIVATE KEY'));
}
/**
* Extracts the base 64 value from the PEM certificate
*
* @param Key $key
* @param string $header
*
* @return string
*
* @throws InvalidArgumentException When given key is not a ECDSA key
*/
private function getKeyContent(Key $key, $header)
{
$match = null;
preg_match(
'/[\-]{5}BEGIN ' . $header . '[\-]{5}(.*)[\-]{5}END ' . $header . '[\-]{5}/',
str_replace([PHP_EOL, "\n", "\r"], '', $key->getContent()),
$match
);
if (isset($match[1])) {
return $match[1];
}
throw new InvalidArgumentException('This is not a valid ECDSA key.');
}
}
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