private static byte[] ExportCertificate(X509Certificate certificate, AsymmetricCipherKeyPair subjectKeyPair, TCertificateFormat certificateFormat)
{
if (certificate == null)
{
throw new ArgumentNullException(nameof(certificate));
}
if (subjectKeyPair == null)
{
throw new ArgumentNullException(nameof(subjectKeyPair));
}
byte[] result = null;
switch (certificateFormat)
{
case TCertificateFormat.NotSet:
{
break;
}
case TCertificateFormat.PEM:
{
using (var stream = new MemoryStream())
{
using (var writer = new StreamWriter(stream))
{
var pemWriter = new PemWriter(writer);
if (subjectKeyPair.Private is ECKeyParameters)
{
var priv = (ECPrivateKeyParameters)subjectKeyPair.Private;
var dp = priv.Parameters;
var orderBitLength = dp.N.BitLength;
ECPrivateKeyStructure ec;
X962Parameters x962;
if (priv.PublicKeyParamSet == null)
{
var ecP = new X9ECParameters(dp.Curve, dp.G, dp.N, dp.H, dp.GetSeed());
x962 = new X962Parameters(ecP);
}
else
{
x962 = new X962Parameters(priv.PublicKeyParamSet);
}
ec = new ECPrivateKeyStructure(orderBitLength, priv.D, SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(subjectKeyPair.Public).PublicKeyData, x962);
pemWriter.WriteObject(new Org.BouncyCastle.Utilities.IO.Pem.PemObject("EC PRIVATE KEY", ec.GetEncoded()));
}
else
{
pemWriter.WriteObject(new MiscPemGenerator(subjectKeyPair.Private));
}
pemWriter.WriteObject(new MiscPemGenerator(subjectKeyPair.Public));
pemWriter.WriteObject(new MiscPemGenerator(certificate));
writer.Flush();
result = stream.ToArray();
}
}
}
break;
case TCertificateFormat.PFX:
{
//Asn1Sequence asn1Sequence = Asn1Sequence.GetInstance(Asn1Object.FromByteArray(certificate.GetEncoded()));
//asn1Sequence.GetObjects
//Org.BouncyCastle.Asn1.Pkcs.Pfx pfx = new Org.BouncyCastle.Asn1.Pkcs.Pfx();
//Org.BouncyCastle.Asn1.Pkcs.PrivateKeyInfo info = Org.BouncyCastle.Pkcs.PrivateKeyInfoFactory.CreatePrivateKeyInfo(subjectKeyPair.Private);
//result = pfx.GetEncoded(Asn1Encodable.Der);
break;
}
case TCertificateFormat.CER:
{
result = certificate.GetEncoded();
break;
}
default:
{
break;
}
}
return(result);
}
