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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
declare(strict_types=1);
namespace Magento\JwtUserToken\Model;
use Magento\Framework\App\DeploymentConfig;
use Magento\Framework\Jwt\Jwk;
use Magento\Framework\Jwt\JwkFactory;
use Magento\Framework\Jwt\JwkSet;
/**
* Creates JWT settings instances using Magento secret.
*/
class SecretBasedJwksFactory
{
/**
* @var string[]
*/
private $keys;
/**
* @var JwkFactory
*/
private $jwkFactory;
/**
* @param DeploymentConfig $deploymentConfig
* @param JwkFactory $jwkFactory
*/
public function __construct(DeploymentConfig $deploymentConfig, JwkFactory $jwkFactory)
{
$this->keys = preg_split('/\s+/s', trim((string)$deploymentConfig->get('crypt/key')));
//Making sure keys are large enough.
foreach ($this->keys as &$key) {
$key = str_pad($key, 2048, '&', STR_PAD_BOTH);
}
$this->jwkFactory = $jwkFactory;
}
/**
* Create JWKs for given algorithm.
*
* @param string $algorithm
* @return Jwk[]
* @throws \InvalidArgumentException When algorithm is not recognized.
*/
public function createFor(string $algorithm): array
{
switch ($algorithm) {
case Jwk::ALGORITHM_HS256:
return array_map(
function (string $key): Jwk {
static $i = 0;
return $this->jwkFactory->createHs256($key, (string) ++$i);
},
$this->keys
);
case Jwk::ALGORITHM_HS384:
return array_map(
function (string $key): Jwk {
static $i = 0;
return $this->jwkFactory->createHs384($key, (string) ++$i);
},
$this->keys
);
case Jwk::ALGORITHM_HS512:
return array_map(
function (string $key): Jwk {
static $i = 0;
return $this->jwkFactory->createHs512($key, (string) ++$i);
},
$this->keys
);
case Jwk::ALGORITHM_A128KW:
return array_map(
function (string $key): Jwk {
static $i = 0;
return $this->jwkFactory->createA128KW($key, (string) ++$i);
},
$this->keys
);
case Jwk::ALGORITHM_A192KW:
return array_map(
function (string $key): Jwk {
static $i = 0;
return $this->jwkFactory->createA192KW($key, (string) ++$i);
},
$this->keys
);
case Jwk::ALGORITHM_A256KW:
return array_map(
function (string $key): Jwk {
static $i = 0;
return $this->jwkFactory->createA256KW($key, (string) ++$i);
},
$this->keys
);
case Jwk::ALGORITHM_A128GCMKW:
return array_map(
function (string $key): Jwk {
static $i = 0;
return $this->jwkFactory->createA128Gcmkw($key, (string) ++$i);
},
$this->keys
);
case Jwk::ALGORITHM_A192GCMKW:
return array_map(
function (string $key): Jwk {
static $i = 0;
return $this->jwkFactory->createA192Gcmkw($key, (string) ++$i);
},
$this->keys
);
case Jwk::ALGORITHM_A256GCMKW:
return array_map(
function (string $key): Jwk {
static $i = 0;
return $this->jwkFactory->createA256Gcmkw($key, (string) ++$i);
},
$this->keys
);
default:
throw new \InvalidArgumentException('Unknown algorithm "' . $algorithm . '"');
}
}
}