private byte[] EncryptPackage(byte[] data)
{
int pkgLength = data.Length;
serializer.ResetBytePos();
serializer.Write(pkgLength);
serializer.Write(data);
return(serializer.ToArray());
}
private byte[] EncryptPackage(byte[] data)
{
NetworkSerializer serializer = new NetworkSerializer(8192);
int pkgLength = data.Length;
serializer.Clear();
serializer.Write(pkgLength);
serializer.Write(data);
return(serializer.ToArray());
}
public void PadTo32Bits(int len, NetworkSerializer serializer)
{
while (((len++) % 4) != 0)
{
serializer.Write((byte)0);
}
}
public void AddMessageIntegrity(NetworkSerializer packet)
{
string saslPassword = new SASLprep().Prepare(password);
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
string valueToHashMD5 = string.Format("{0}:{1}:{2}", username, realm, saslPassword);
byte[] hmacSha1Key = md5.ComputeHash(Encoding.UTF8.GetBytes(valueToHashMD5));
HMACSHA1 hmacSha1 = new HMACSHA1(hmacSha1Key);
byte[] hmacBytes = hmacSha1.ComputeHash(packet.ByteBuffer, 0, packet.byteLength);
packet.Write((ushort)STUNAttribute.MessageIntegrity);
packet.Write((ushort)hmacBytes.Length);
packet.Write(hmacBytes);
}
public byte[] WriteRequest()
{
serializer.SetBufferLength(0);
serializer.Write((byte)0x38);
//method id
serializer.Write((byte)methodType);
//attributes
for (int i = 0; i < attributeBytes.Count; i++)
{
serializer.Write(attributeBytes[i]);
}
byte[] ret = serializer.ToArray();
//cleanup
attributeBytes.Clear();
serializer.SetBufferLength(0);
return(ret);
}
public byte[] WriteRequest()
{
Console.WriteLine("\nRequest Method= " + Enum.GetName(typeof(SignalingMethod), methodType));
serializer.SetBufferLength(0);
serializer.Write((byte)0x38);
//method id
serializer.Write((byte)methodType);
//attributes
for (int i = 0; i < attributeBytes.Count; i++)
{
//LogAttribute(i);
serializer.Write(attributeBytes[i]);
}
byte[] ret = serializer.ToArray();
//cleanup
attributeBytes.Clear();
serializer.SetBufferLength(0);
return(ret);
}
public byte[] WriteRequest()
{
Console.WriteLine("\nRequest Method= " + Enum.GetName(typeof(STUNMethod), method));
serializer.SetBufferLength(0);
//method id
serializer.Write((ushort)method);
//method length
serializer.Write((ushort)0);
//transaction id
serializer.Write(transactionID);
//attributes
for (int i = 0; i < attributeBytes.Count; i++)
{
LogAttribute(i);
serializer.Write(attributeBytes[i]);
}
//update message length
int totalLength = serializer.byteLength - 20;
int lastPos = serializer.byteLength;
if (integrity)
{
totalLength += 24;
}
serializer.byteLength = 2;
serializer.Write((ushort)totalLength);
serializer.byteLength = lastPos;
//method integrity goes here
if (integrity)
{
//GenerateMessageIntegrity(packet);
AddMessageIntegrity(serializer);
}
Console.WriteLine("Message Length = " + totalLength);
Console.WriteLine("Total Bytes: \n\n" + serializer.byteLength);
byte[] ret = serializer.ToArray();
//cleanup
attributeBytes.Clear();
serializer.SetBufferLength(0);
return(ret);
}