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<?php |
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declare(strict_types=1); |
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namespace Bip70\X509; |
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use Bip70\Exception\X509Exception; |
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use Bip70\X509\Exception\InvalidCertificateChainException; |
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use Bip70\X509\Exception\InvalidX509Signature; |
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use Bip70\Protobuf\Codec\NonDiscardingBinaryCodec; |
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use Bip70\Protobuf\Proto\PaymentRequest; |
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use Bip70\Protobuf\Proto\X509Certificates; |
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use Sop\CryptoBridge\Crypto; |
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use Sop\CryptoTypes\AlgorithmIdentifier\Feature\AsymmetricCryptoAlgorithmIdentifier; |
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use Sop\CryptoTypes\Signature\Signature; |
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use X509\Certificate\Certificate; |
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use X509\Certificate\CertificateBundle; |
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use X509\CertificationPath\CertificationPath; |
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use X509\CertificationPath\PathValidation\PathValidationConfig; |
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class RequestValidation |
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{ |
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/** |
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* @var PathValidationConfig |
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*/ |
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private $validationConfig; |
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/** |
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* @var CertificateBundle |
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*/ |
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private $trustStore; |
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/** |
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* RequestValidation constructor. |
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* @param PathValidationConfig|null $validationConfig |
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* @param CertificateBundle|null $trustStore |
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*/ |
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public function __construct(PathValidationConfig $validationConfig = null, CertificateBundle $trustStore = null) |
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{ |
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if (null === $validationConfig) { |
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$validationConfig = PathValidationConfig::defaultConfig(); |
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} |
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if (null === $trustStore) { |
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$trustStore = new CertificateBundle(); |
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} |
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$this->validationConfig = $validationConfig; |
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$this->trustStore = $trustStore; |
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} |
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/** |
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* @param X509Certificates $x509 |
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* @return \Bip70\X509\QualifiedCertificate |
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* @throws InvalidCertificateChainException |
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*/ |
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public function validateCertificateChain(X509Certificates $x509) |
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{ |
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if (!$x509->hasCertificate()) { |
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throw new \RuntimeException("No certificates in bundle"); |
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} |
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/** @var Certificate[] $certificates */ |
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$certificates = []; |
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foreach ($x509->getCertificateList() as $certDer) { |
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$certificates[] = Certificate::fromDER($certDer); |
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} |
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$endEntity = $certificates[0]; |
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$intermediate = new CertificateBundle(...array_slice($certificates, 1)); |
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return $this->validateCertificates($endEntity, $intermediate); |
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} |
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/** |
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* @param Certificate $certificate |
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* @param CertificateBundle $intermediate |
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* @return QualifiedCertificate |
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*/ |
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public function validateCertificates(Certificate $certificate, CertificateBundle $intermediate): QualifiedCertificate |
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{ |
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$path = CertificationPath::toTarget($certificate, $this->trustStore, $intermediate); |
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return new QualifiedCertificate($path, $path->validate($this->validationConfig)); |
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} |
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/** |
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* @param Certificate $endEntity |
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* @param PaymentRequest $paymentRequest |
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* @throws InvalidX509Signature |
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* @throws X509Exception |
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*/ |
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public function validateX509Signature(Certificate $endEntity, PaymentRequest $paymentRequest) |
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{ |
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$subjectKey = $endEntity->tbsCertificate()->subjectPublicKeyInfo(); |
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/** @var AsymmetricCryptoAlgorithmIdentifier $algOid */ |
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$algOid = $subjectKey->algorithmIdentifier(); |
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$signAlgorithm = SignatureAlgorithmFactory::getSignatureAlgorithm($paymentRequest->getPkiType(), $algOid); |
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$clone = new PaymentRequest(); |
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if ($paymentRequest->hasPaymentDetailsVersion()) { |
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$clone->setPaymentDetailsVersion($paymentRequest->getPaymentDetailsVersion()); |
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} |
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$clone->setPkiType($paymentRequest->getPkiType()); |
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$clone->setPkiData($paymentRequest->getPkiData()); |
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$clone->setSerializedPaymentDetails($paymentRequest->getSerializedPaymentDetails()); |
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$clone->setSignature(''); |
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$signData = $clone->serialize(new NonDiscardingBinaryCodec()); |
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$signature = Signature::fromSignatureData($paymentRequest->getSignature(), $signAlgorithm); |
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if (!Crypto::getDefault()->verify($signData, $signature, $subjectKey, $signAlgorithm)) { |
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throw new InvalidX509Signature("Invalid signature on request"); |
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} |
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return; |
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} |
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/** |
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* @param PaymentRequest $paymentRequest |
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* @return \X509\CertificationPath\PathValidation\PathValidationResult |
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*/ |
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public function verifyX509Details(PaymentRequest $paymentRequest) |
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{ |
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if (PKIType::NONE === $paymentRequest->getPkiType()) { |
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throw new X509Exception("Cannot verify a request without a signature. You should check before calling verify."); |
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} |
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$x509 = new X509Certificates(); |
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$x509->parse($paymentRequest->getPkiData()); |
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$qualifiedCert = $this->validateCertificateChain($x509); |
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$validationResult = $qualifiedCert->getValidationResult(); |
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$this->validateX509Signature($validationResult->certificate(), $paymentRequest); |
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return $validationResult; |
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} |
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} |
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bip70 /
bip70-php
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