/// <summary>
/// Compare this object instance with another
/// </summary>
///
/// <param name="Obj">Object to compare</param>
///
/// <returns>True if equal, otherwise false</returns>
public override bool Equals(Object Obj)
{
if (this == Obj)
{
return(true);
}
if (Obj == null && this != null)
{
return(false);
}
DtmParameters other = (DtmParameters)Obj;
if (GetHashCode() != other.GetHashCode())
{
return(false);
}
return(true);
}
/// <summary>
/// Initialize this class with a random generator
/// </summary>
///
/// <param name="Parameters">A populated <see cref="DtmParameters"/> class containing the session parameters</param>
/// <param name="Host">A populated <see cref="DtmClient"/> class containing the servers identity data</param>
/// <param name="Generator">The initialized <see cref="IRandom"/> Prng instance</param>
/// <param name="BufferCount">The number of send/receive buffers, default is 1024</param>
/// <param name="DisposeEngines">if set to true (default), the primary symmetric ciphers are disposed when this class is disposed</param>
public DtmKex(DtmParameters Parameters, DtmClient Host, IRandom Generator, int BufferCount = 1024, bool DisposeEngines = true)
{
_disposeEngines = DisposeEngines;
_dtmParameters = Parameters;
_dtmHost = Host;
_srvIdentity = new DtmIdentity(Host.PublicId, Parameters.AuthPkeId, Parameters.AuthSession, 0);
_exchangeState = DtmExchangeFlags.Connect;
_rcvBuffer = new PacketBuffer(BufferCount);
_sndBuffer = new PacketBuffer(BufferCount);
_rndGenerator = Generator;
_bufferCount = BufferCount;
}
/// <summary>
/// The remote server requires security parameters negotiation to continue.
/// <para>Evaluates the requested security parameter requirement from a server,
/// using the security context stored in the servers identity structure option flag.</para>
/// </summary>
///
/// <param name="Context">The servers required security level</param>
///
/// <returns>Returns true if the negotiation succeeds</returns>
private bool NegotiateSecurity(DtmParamSets.SecurityContexts Context)
{
// get the clients id structure
DtmParamSets.SecurityContexts sxt = DtmParamSets.GetContext(_dtmParameters.OId);
// note: only negotiate up as a security measure?
if (Context == DtmParamSets.SecurityContexts.X1)
_dtmParameters = (DtmParameters)DtmParamSets.DTMX11RNS1R2.DeepCopy();
else if (Context == DtmParamSets.SecurityContexts.X2)
_dtmParameters = (DtmParameters)DtmParamSets.DTMX22MNS2R2.DeepCopy();
else if (Context == DtmParamSets.SecurityContexts.X3)
_dtmParameters = (DtmParameters)DtmParamSets.DTMX31RNT1R2.DeepCopy();
else if (Context == DtmParamSets.SecurityContexts.X4)
_dtmParameters = (DtmParameters)DtmParamSets.DTMX41RNT1R1.DeepCopy();
else
return false; // error or failure
// copy new security params
_srvIdentity = new DtmIdentity(_dtmHost.PublicId, _dtmParameters.AuthPkeId, _dtmParameters.AuthSession, 0);
return true;
}
/// <summary>
/// Serialize an DtmParameters structure
/// </summary>
///
/// <param name="Paramaters">A DtmParameters structure</param>
///
/// <returns>A stream containing the DtmParameters data</returns>
public static Stream Serialize(DtmParameters Paramaters)
{
return Paramaters.ToStream();
}
/// <summary>
/// Serialize an DtmParameters structure
/// </summary>
///
/// <param name="Paramaters">A DtmParameters structure</param>
///
/// <returns>A stream containing the DtmParameters data</returns>
public static Stream Serialize(DtmParameters Paramaters)
{
return(Paramaters.ToStream());
}