BouncyCastle RSAPrivateKey to .NET RSAPrivateKey

Question

I\'m creating a certificate distribution system to keep track of clients and stuff.

What happens is:

• Client send CSR to Server
• Server checks a

Answer 1

I found it!

Or atleast part of it :)

As for the PrivateKey.ExportToParameters(true) Still doens't work but this has something todo with the fact that the key was 2048 bit. Because when I changed it to 1024bit it did work. So if anyone ever finds out why keep me posted.

So here we go again.

//BouncyCastle's Key objects
RsaPrivateCrtKeyParameters rpckp = ((RsaPrivateCrtKeyParameters)ackp.Private);

//.NET RSA Key objects
System.Security.Cryptography.RSACryptoServiceProvider rcsp = new System.Security.Cryptography.RSACryptoServiceProvider();
System.Security.Cryptography.RSAParameters parms = new System.Security.Cryptography.RSAParameters();

//So the thing changed is offcourse the ToByteArrayUnsigned() instead of
//ToByteArray()
parms.Modulus   = rpckp.Modulus.ToByteArrayUnsigned();
parms.P         = rpckp.P.ToByteArrayUnsigned();
parms.Q         = rpckp.Q.ToByteArrayUnsigned();
parms.DP        = rpckp.DP.ToByteArrayUnsigned();
parms.DQ        = rpckp.DQ.ToByteArrayUnsigned();
parms.InverseQ  = rpckp.QInv.ToByteArrayUnsigned();
parms.D         = rpckp.Exponent.ToByteArrayUnsigned();
parms.Exponent  = rpckp.PublicExponent.ToByteArrayUnsigned();

//So now this now appears to work.
rcsp.ImportParameters(parms);

So now I can add the complete Certificate to my store :)