public static void ExportToP12(CngKey key, X509Certificate cert, string outputFile, string password, string name)
{
// Normalise the name
string nName = name.Replace(' ', '_');
// Use the FIPS-140 system prng
SecureRandom random = new SecureRandom(new CryptoApiRandomGenerator());
// Build PKCS#12
Pkcs12StoreBuilder p12 = new Pkcs12StoreBuilder();
Pkcs12Store pkcs = p12.Build();
byte[] privateKey = key.Export(CngKeyBlobFormat.EccPrivateBlob);
ECPrivateKeyParameters privateParams = EccKeyBlob.UnpackEccPrivateBlob(privateKey);
pkcs.SetKeyEntry(nName,
new AsymmetricKeyEntry(privateParams),
new X509CertificateEntry[] { new X509CertificateEntry(cert) });
Stream stream = new FileStream(outputFile, FileMode.Create);
pkcs.Save(stream, password.ToCharArray(), random);
stream.Close();
}
public static ECPublicKeyParameters getPublicKey(CngKey key)
{
return(EccKeyBlob.UnpackEccPublicBlob(key.Export(CngKeyBlobFormat.EccPublicBlob)));
}