[C#] Can't send public key to client.

[sathenzar]

I have been using encryption for a bit now with no problem. However when trying to make a test windows 8 app I noticed I can't send the public key back to the client to send encrypted data back to the server. It always throws an exception. Here is my code:

private async void TestFunc()
        {
            TestEncSvcClient client = new TestEncSvcClient();
            string msg = "Test message (enc server).";
            byte[] privateKeyBlob = await client.GetPrivateKeyAsync();
            // Now that we have the key lets attempt to encrypt/decrypt with it.
            AsymmetricKeyAlgorithmProvider rsaP = AsymmetricKeyAlgorithmProvider.OpenAlgorithm(AsymmetricAlgorithmNames.RsaPkcs1);
            CryptographicKey key = rsaP.ImportPublicKey(privateKeyBlob.AsBuffer());
            byte[] encMsg = CryptographicEngine.Encrypt(key, Encoding.UTF8.GetBytes(msg).AsBuffer(), null).ToArray();
            this.xMainTxtBlk.Text += "\n\nReceived key from server. Encryption length: " + encMsg.Length + "\nEncrypted version: " + Encoding.UTF8.GetString(encMsg, 0, encMsg.Length);
            // Now lets decrypt it.
            //byte[] decMsg = CryptographicEngine.Decrypt(key, encMsg.AsBuffer(), null).ToArray();
            //this.xMainTxtBlk.Text += "\n\nDecrypted version: " + Encoding.UTF8.GetString(decMsg, 0, decMsg.Length);
        }

Service code

public class TestEncSvc : ITestEncSvc
    {
        byte[] ITestEncSvc.GetPrivateKey()
        {
            byte[] privateBlob = null;
            using (RSACryptoServiceProvider rsaP = new RSACryptoServiceProvider())
            {
                privateBlob = rsaP.ExportCspBlob(false);
            }
            return privateBlob;
        }
    }

I get this error: ASN1 bad tag value met. (Exception from HRESULT: 0x8009310B). No one at Microsoft's forums seem to be answering others questions similar to what I am asking so I am turning to neowin.net in hopes to get an answer (this post is someone asking a similar question: http://social.msdn.microsoft.com/Forums/en-US/winappswithcsharp/thread/204e55c3-d0c3-4736-bdb7-1ac41f62fd54 however I am just using the cspblob exported in this example, haven't tried the xml version yet). I'm going to post one myself to see if I get any luck.

[sathenzar]

So I've tried this link: http://social.msdn.microsoft.com/Forums/en-AU/winappswithcsharp/thread/4b96bcd5-39bd-4bd8-85d4-bf689e92e46a to no avail. Still throws a bad data tag error. After a solid week of nothing I have to say it's making me bitter. How could Microsoft not have documentation on this? People have WCF services, show how to interact with them.