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<?php |
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declare(strict_types = 1); |
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namespace Sop\JWX\JWK\RSA; |
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use Sop\CryptoEncoding\PEM; |
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use Sop\CryptoTypes\Asymmetric\PrivateKeyInfo; |
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use Sop\CryptoTypes\Asymmetric\RSA\RSAPrivateKey; |
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use Sop\JWX\JWK\Asymmetric\PrivateKeyJWK; |
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use Sop\JWX\JWK\Asymmetric\PublicKeyJWK; |
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use Sop\JWX\JWK\Parameter\ExponentParameter; |
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use Sop\JWX\JWK\Parameter\FirstCRTCoefficientParameter; |
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use Sop\JWX\JWK\Parameter\FirstFactorCRTExponentParameter; |
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use Sop\JWX\JWK\Parameter\FirstPrimeFactorParameter; |
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use Sop\JWX\JWK\Parameter\JWKParameter; |
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use Sop\JWX\JWK\Parameter\KeyTypeParameter; |
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use Sop\JWX\JWK\Parameter\ModulusParameter; |
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use Sop\JWX\JWK\Parameter\PrivateExponentParameter; |
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use Sop\JWX\JWK\Parameter\SecondFactorCRTExponentParameter; |
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use Sop\JWX\JWK\Parameter\SecondPrimeFactorParameter; |
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/** |
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* Class representing RSA private key as a JWK. |
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* |
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* @see https://tools.ietf.org/html/rfc7517#section-4 |
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* @see https://tools.ietf.org/html/rfc7518#section-6.3 |
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* @see https://tools.ietf.org/html/rfc7518#section-6.3.2 |
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*/ |
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class RSAPrivateKeyJWK extends PrivateKeyJWK |
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{ |
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/** |
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* Parameter names managed by this class. |
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* |
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* @internal |
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* |
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* @var string[] |
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*/ |
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public const MANAGED_PARAMS = [ |
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JWKParameter::PARAM_KEY_TYPE, |
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JWKParameter::PARAM_MODULUS, |
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JWKParameter::PARAM_EXPONENT, |
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JWKParameter::PARAM_PRIVATE_EXPONENT, |
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JWKParameter::PARAM_FIRST_PRIME_FACTOR, |
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JWKParameter::PARAM_SECOND_PRIME_FACTOR, |
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JWKParameter::PARAM_FIRST_FACTOR_CRT_EXPONENT, |
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JWKParameter::PARAM_SECOND_FACTOR_CRT_EXPONENT, |
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JWKParameter::PARAM_FIRST_CRT_COEFFICIENT, |
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]; |
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/** |
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* Constructor. |
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* |
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* @param JWKParameter ...$params |
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* |
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* @throws \UnexpectedValueException If missing required parameter |
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*/ |
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public function __construct(JWKParameter ...$params) |
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{ |
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parent::__construct(...$params); |
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foreach (self::MANAGED_PARAMS as $name) { |
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if (!$this->has($name)) { |
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throw new \UnexpectedValueException( |
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"Missing '{$name}' parameter."); |
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} |
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} |
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if (KeyTypeParameter::TYPE_RSA !== $this->keyTypeParameter()->value()) { |
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throw new \UnexpectedValueException('Invalid key type.'); |
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} |
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// cast private exponent to correct class |
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$key = JWKParameter::PARAM_PRIVATE_EXPONENT; |
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$this->_parameters[$key] = new PrivateExponentParameter( |
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$this->_parameters[$key]->value()); |
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} |
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/** |
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* Initialize from RSAPrivateKey. |
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*/ |
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public static function fromRSAPrivateKey(RSAPrivateKey $pk): self |
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{ |
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$n = ModulusParameter::fromNumber($pk->modulus()); |
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$e = ExponentParameter::fromNumber($pk->publicExponent()); |
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$d = PrivateExponentParameter::fromNumber($pk->privateExponent()); |
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$p = FirstPrimeFactorParameter::fromNumber($pk->prime1()); |
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$q = SecondPrimeFactorParameter::fromNumber($pk->prime2()); |
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$dp = FirstFactorCRTExponentParameter::fromNumber($pk->exponent1()); |
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$dq = SecondFactorCRTExponentParameter::fromNumber($pk->exponent2()); |
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$qi = FirstCRTCoefficientParameter::fromNumber($pk->coefficient()); |
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$key_type = new KeyTypeParameter(KeyTypeParameter::TYPE_RSA); |
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return new self($key_type, $n, $e, $d, $p, $q, $dp, $dq, $qi); |
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} |
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/** |
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* Initialize from PEM. |
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*/ |
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public static function fromPEM(PEM $pem): self |
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{ |
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return self::fromRSAPrivateKey(RSAPrivateKey::fromPEM($pem)); |
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} |
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/** |
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* Get public key component. |
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* |
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* @return RSAPublicKeyJWK |
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*/ |
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public function publicKey(): PublicKeyJWK |
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{ |
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$kty = $this->keyTypeParameter(); |
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$n = $this->modulusParameter(); |
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$e = $this->exponentParameter(); |
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return new RSAPublicKeyJWK($kty, $n, $e); |
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} |
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/** |
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* Convert JWK to PEM. |
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*/ |
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public function toPEM(): PEM |
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{ |
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$n = $this->modulusParameter()->number()->base10(); |
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$e = $this->exponentParameter()->number()->base10(); |
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$d = $this->privateExponentParameter()->number()->base10(); |
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$p = $this->firstPrimeFactorParameter()->number()->base10(); |
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$q = $this->secondPrimeFactorParameter()->number()->base10(); |
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$dp = $this->firstFactorCRTExponentParameter()->number()->base10(); |
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$dq = $this->secondFactorCRTExponentParameter()->number()->base10(); |
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$qi = $this->firstCRTCoefficientParameter()->number()->base10(); |
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$pk = new RSAPrivateKey($n, $e, $d, $p, $q, $dp, $dq, $qi); |
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return PrivateKeyInfo::fromPrivateKey($pk)->toPEM(); |
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} |
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} |
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sop /
jwx
