public static X509Certificate MakeV1Certificate(AsymmetricCipherKeyPair subKP,
string _subDN, AsymmetricCipherKeyPair issKP, string _issDN)
{
AsymmetricKeyParameter subPub = subKP.Public;
AsymmetricKeyParameter issPriv = issKP.Private;
AsymmetricKeyParameter issPub = issKP.Public;
X509V1CertificateGenerator v1CertGen = new X509V1CertificateGenerator();
v1CertGen.Reset();
v1CertGen.SetSerialNumber(AllocateSerialNumber());
v1CertGen.SetIssuerDN(new X509Name(_issDN));
v1CertGen.SetNotBefore(DateTime.UtcNow);
v1CertGen.SetNotAfter(DateTime.UtcNow.AddDays(100));
v1CertGen.SetSubjectDN(new X509Name(_subDN));
v1CertGen.SetPublicKey(subPub);
if (issPub is RsaKeyParameters)
{
v1CertGen.SetSignatureAlgorithm("SHA1WithRSA");
}
else if (issPub is DsaPublicKeyParameters)
{
v1CertGen.SetSignatureAlgorithm("SHA1withDSA");
}
else if (issPub is ECPublicKeyParameters)
{
ECPublicKeyParameters ecPub = (ECPublicKeyParameters)issPub;
if (ecPub.AlgorithmName == "ECGOST3410")
{
v1CertGen.SetSignatureAlgorithm("GOST3411withECGOST3410");
}
else
{
v1CertGen.SetSignatureAlgorithm("SHA1withECDSA");
}
}
else
{
v1CertGen.SetSignatureAlgorithm("GOST3411WithGOST3410");
}
X509Certificate _cert = v1CertGen.Generate(issPriv);
_cert.CheckValidity(DateTime.UtcNow);
_cert.Verify(issPub);
return _cert;
}