public void UntrustContact(int contactId)
{
ThrowExceptionIfNotConnected();
lock (mutex)
{
if (contactId == this.UserId)
{
throw new Exception("You really don't want untrust yourself.");
}
Log("Sending UNTRUST_CONTACT command.");
BinaryEncoder.SendCommand(stream, ConnectionCommand.UNTRUST_CONTACT);
BinaryEncoder.SendInt(stream, contactId);
using (Context context = new Context(config))
{
var contact = new UContact(context.Contacts
.Where(u => u.PublicId == contactId)
.SingleOrDefault())
{
Trusted = false
};
PushOperations.SendJsonCapsula(context, contact.GetSelfUpdate(), UserId, UserId);
context.SaveChanges();
}
}
Push();
}
public static byte[] GetJsonEncoded(Context context, IJType message, long receiverId, byte[] attechment = null)
{
byte[] aesBinKey = context.Contacts
.Where(u => u.PublicId == receiverId)
.Select(u => u.SendAesKey)
.SingleOrDefault();
AESPassword key = new AESPassword(aesBinKey);
MemoryStream stream = new MemoryStream();
BinaryEncoder.SendInt(stream, (int)message.GetJsonType());
string json = JsonConvert.SerializeObject(message);
TextEncoder.SendString(stream, json);
if (attechment == null)
{
BinaryEncoder.SendInt(stream, 0);
}
else
{
BinaryEncoder.SendInt(stream, 1);
BinaryEncoder.SendBytes(stream, attechment);
}
byte[] notEncrypted = stream.ToArray();
return(key.Encrypt(notEncrypted));
}
public void TrustContact(int contactId)
{
ThrowExceptionIfNotConnected();
Pull();
lock (mutex)
{
Log("Sending TRUST_CONTACT command.");
BinaryEncoder.SendCommand(stream, ConnectionCommand.TRUST_CONTACT);
BinaryEncoder.SendInt(stream, contactId);
using (Context context = new Context(config))
{
var contact = new UContact(context.Contacts
.Where(u => u.PublicId == contactId)
.SingleOrDefault())
{
Trusted = true
};
if (contact.SendAesKey == null)
{
Log("Sending new key.");
BinaryEncoder.SendInt(stream, 1);
AESPassword password = AESPassword.GenerateAESPassword();
contact.SendAesKey = password.Password;
X509Certificate2 recepientCert = X509Certificate2Utils.ImportFromPem(
context.Contacts
.Where(u => u.PublicId == contactId)
.Select(u => u.PublicCertificate)
.SingleOrDefault());
byte[] toSend = RSAEncoder.EncryptAndSign(password.Password, recepientCert, MyCertificate);
BinaryEncoder.SendBytes(stream, toSend);
}
else
{
Log("No new key will be sended.");
BinaryEncoder.SendInt(stream, 0);
}
if (contactId != this.UserId)
{
PushOperations.SendJsonCapsula(context, contact.GetSelfUpdate(), UserId, UserId);
}
else
{
var me = context.Contacts
.Where(u => u.PublicId == UserId)
.Single();
me.SendAesKey = contact.SendAesKey;
me.ReceiveAesKey = contact.ReceiveAesKey;
}
context.SaveChanges();
}
Log("Trustification has been done.");
}
Push();
}
