/**
* @param string $certificate
* @return Certificate
* @throws \Exception
* @throws \FG\ASN1\Exception\ParserException
*/
public function parse($certificate)
{
$certificate = str_replace(CertificateSerializer::HEADER, '', $certificate);
$certificate = str_replace(CertificateSerializer::FOOTER, '', $certificate);
$binary = base64_decode($certificate);
$asnObject = Object::fromBinary($binary);
if (!$asnObject instanceof Sequence || $asnObject->getNumberOfChildren() !== 3) {
throw new \InvalidArgumentException('Invalid data.');
}
// Parse Certificate Info
$children = $asnObject->getChildren();
if (!$children[0] instanceof Sequence) {
throw new \InvalidArgumentException('Invalid data: certificate info');
}
$info = $this->parseCertificateInfo($children[0]);
// Parse Signature Algorithm
$sigSection = $children[1];
if (!$sigSection instanceof Sequence) {
throw new \Exception('Invaid sig algo section');
}
$sigAlg = $this->parseSigAlg($sigSection);
// Parse Signature
if (!$children[2] instanceof BitString) {
throw new \Exception('Invalid signature');
}
$signature = $this->sigSer->parse(hex2bin($children[2]->getContent()));
return new Certificate($info, $sigAlg, $signature);
}
/**
* @param Certificate $cert
* @return Sequence
*/
public function getCertificateASN(Certificate $cert)
{
return new Sequence($this->getCertInfoASN($cert->getInfo()), new Sequence(SigAlgorithmOidMapper::getSigAlgorithmOid($cert->getSigAlgorithm())), new BitString(bin2hex($this->sigSer->serialize($cert->getSignature()))));
}
/**
* @param Csr $csr
* @return Sequence
*/
public function getCsrASN(Csr $csr)
{
return new Sequence($this->getCertRequestInfoASN($csr->getCurve(), $csr->getPublicKey(), $csr->getSubject()), new Sequence(SigAlgorithmOidMapper::getSigAlgorithmOid($csr->getSigAlgorithm())), new BitString(bin2hex($this->sigSer->serialize($csr->getSignature()))));
}
