/// <summary>
/// Generate a CertificateID.
/// </summary>
/// <param name="hashAlgorithm"></param>
/// <param name="issuerCert"></param>
/// <param name="number"></param>
/// <param name="provider"></param>
public CertificateID(string hashAlgorithm, X509Certificate issuerCert, BigInteger number, string provider)
{
try
{
Digest digest = TransformationByName.DigestByName(hashAlgorithm);
AlgorithmIdentifier hashAlg = new AlgorithmIdentifier(new DERObjectIdentifier(hashAlgorithm), new DERNull());
X509Name issuerName = issuerCert.getSubjectDN();
byte[] b = issuerName.getEncoded();
digest.update(b, 0, b.Length);
b = new byte[digest.getDigestSize()];
digest.doFinal(b, 0);
ASN1OctetString issuerNameHash = new DEROctetString(b);
AsymmetricKeyParameter issuerKey = issuerCert.getPublicKey();
SubjectPublicKeyInfo info = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(issuerKey);
b = info.getEncoded();
digest.update(b, 0, b.Length);
b = new byte[digest.getDigestSize()];
digest.doFinal(b, 0);
ASN1OctetString issuerKeyHash = new DEROctetString(b);
DERInteger serialNumber = new DERInteger(number);
this.id = new CertID(hashAlg, issuerNameHash, issuerKeyHash, serialNumber);
}
catch (Exception e)
{
throw new OCSPException("problem creating ID: " + e, e);
}
}
