public BigInteger ExportPrivateKey()
{
var context = GetHandle(_cert);
var derive = new KeyDerivation();
derive.Init();
byte[] sessKey, privKeyBlob;
ExportPrivateKey(context, derive.GetPublicKeyBytes(), out sessKey, out privKeyBlob);
_encryptedPkey = new EncryptedPrivateKey(privKeyBlob);
_sk = new SessionKey(sessKey);
var kek = derive.Vko(_encryptedPkey, _sk.GetPublicKey());
var pkey = _encryptedPkey.UnwrapKey(kek);
Array.Reverse(pkey);
return(new BigInteger(1, pkey));
}
public BigInteger ExportPrivateKey()
{
var pkeyInfo = GetPrivateKeyInfo(_cert);
CheckProvider(pkeyInfo);
var provType = (ProviderType)pkeyInfo.ProviderType;
var factory = KeyExportFactory.Create(provType);
var derive = factory.CreateKeyDerivation();
var blob = factory.CreatePrivateKeyBlob();
var privKeyBlob = blob.GetPrivateKeyBlob(_cert.Handle, derive);
_encryptedPkey = factory.CreateEncryptedPrivateKey(privKeyBlob);
_sk = factory.CreateSessionKey(blob.SessionKey);
var kek = derive.Vko(_encryptedPkey, _sk.GetPublicKey());
var pkey = _encryptedPkey.UnwrapKey(kek);
Array.Reverse(pkey);
return(new BigInteger(1, pkey));
}