public async Task <SecureChatUser> RegisterNewUser(SecureChatCreateUserRequest userRequest, RSAKeySetIdentity keySetIdentity)
{
using (var client = new HttpClient())
{
client.BaseAddress = new Uri(HostNameURL);
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
HttpResponseMessage response = await client.PostAsJsonAsync("api/securechat/users", userRequest);
if (response.IsSuccessStatusCode)
{
// Get the URI of the created resource.
string responceMessage = await response.Content.ReadAsStringAsync();
StringReader sr = new StringReader(responceMessage);
JsonReader jsonReader = new JsonTextReader(sr);
CreateNewUser createNewUserServerResponce = _jsonSerializer.Deserialize <CreateNewUser>(jsonReader);
RSA_AsymetricEncryption rsaAsymetricEncryption = new RSA_AsymetricEncryption();
RSAParameters rsaParameters = rsaAsymetricEncryption.ParseRSAPublicKeyOnlyInfo(keySetIdentity);
string aesKey = rsaAsymetricEncryption.DecryptObjectUsingRSA(createNewUserServerResponce.EncodedAESKey, rsaParameters);
// Todo decrypt incoming data using AES
SecureChatUser secureChatUser = new SecureChatUser();
//register public key
//PublicKeyData publicKeyData = new PublicKeyData();
//publicKeyData.GUID = userKeySet.RSA_GUID;
//publicKeyData.PublicKey = userKeySet.RSA_PublicKey;
//response = await client.PostAsJsonAsync("api/securechat/publickeys", publicKeyData);
if (response.IsSuccessStatusCode)
{
return(secureChatUser);
}
}
}
return(null);
}
private async void btnCreateUser_Click(object sender, EventArgs e)
{
txtPassword.Focus();
txtPasswordConfirm.Focus();
if (!_passwordsConfirmed)
{
MessageBox.Show(this, "Invalid password", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (!_usernameValidated)
{
MessageBox.Show(this, "Invalid Username", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (keySetIdentity == null)
{
lblServerStatus.Text = "RSA keys for server comunication has not yet been completed, please try again in 5 seconds";
return;
}
try
{
SecureChatCreateUserRequest userRequest = new SecureChatCreateUserRequest {
Nickname = this.txtUserName.Text, RSA_PublicKey = this.keySetIdentity.RSA_PublicKey
};
chatUserProfileData = await ConnectionService.Instance.RegisterNewUser(userRequest, this.keySetIdentity);
if (chatUserProfileData != null)
{
saveFileDialog1.FileName = chatUserProfileData.NickName + ".scp";
saveFileDialog1.Filter = "Secure chat profiles|*.scp";
if (saveFileDialog1.ShowDialog(this) == DialogResult.OK)
{
StorageManager.SerializeObjectToFile(chatUserProfileData, saveFileDialog1.FileName, txtPassword.Text);
}
}
}
catch (Exception ex)
{
MessageBox.Show(this, ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
this.DialogResult = DialogResult.OK;
this.Close();
}
public static SecureChatUser CreateChatUser(string nickname, string guid)
{
SecureChatUser user = new SecureChatUser {
GUID = guid, NickName = nickname, IsVisibleToSearch = false
};
user.UserInfo = new SecureChatUserInfo();
RSA_AsymetricEncryption rsaAsymetricEncryption = new RSA_AsymetricEncryption();
RSAKeySetIdentity rsaKeySet = rsaAsymetricEncryption.GenerateRSAKeyPair(RSA_AsymetricEncryption.RSAKeySize.b4096);
user.User_Certificate = rsaKeySet.RSA_PublicKey;
user.User_PrivateKey = rsaKeySet.RSA_PrivateKey;
user.Server_Certificate = ServerKeyManager.KeyManager.ServerPublicKey;
return(user);
}