/// <summary>
/// SPNG Client Packet API, which is to generate SpngNegotiationToken.
/// </summary>
/// <param name="payloadType">An enum parameter, indicates the inner payload type,
/// e.g. PayloadType.NegInit is for NegTokenInit</param>
/// <param name="negotiationState">Indicate the negotation status, e.g. incomplete, completed.</param>
/// <param name="responseToken">Byte array of responseToken.
/// This field could be null when the first time invoked.</param>
/// <param name="mechListMIC">This field, if present, contains an MIC token for
/// the mechanism list in the initial negotiation message.
/// This field could be null.</param>
/// <returns>SpngNegotiationToken packet</returns>
/// <exception cref="ArgumentOutOfRangeException">PayloadType is not in scope. </exception>
public SpngNegotiationToken CreateNegotiationToken(
SpngPayloadType payloadType, NegState negotiationState, byte[] responseToken, byte[] mechListMIC)
{
NegotiationToken token;
switch (payloadType)
{
case SpngPayloadType.NegResp:
SpngNegTokenResp negResp = CreateNegTokenResp(negotiationState, responseToken, mechListMIC);
token = new NegotiationToken(NegotiationToken.negTokenResp, negResp.Asn1Token);
break;
case SpngPayloadType.NegInit:
NegTokenInit negInit = new NegTokenInit(
this.config.MechList,
SpngUtility.ConvertUintToContextFlags(this.config.ContextAttributes),
new Asn1OctetString(responseToken),
new Asn1OctetString(mechListMIC)
);
token = new NegotiationToken(NegotiationToken.negTokenInit, negInit);
break;
default:
throw new ArgumentOutOfRangeException("payloadType");
}
return(new SpngNegotiationToken(token));
}
/// <summary>
/// SPNG Client Packet API, which is to generate SpngNegTokenResp.
/// </summary>
/// <param name="negotiationState">Indicate the negotation status, e.g. incomplete, completed.</param>
/// <param name="responseToken">Byte array of responseToken.
/// This field could be null when the first time invoked.</param>
/// <param name="mechListMIC">This field, if present, contains an MIC token for
/// the mechanism list in the initial negotiation message.
/// This field could be null.</param>
/// <returns>SpngNegTokenResp packet</returns>
public SpngNegTokenResp CreateNegTokenResp(NegState negotiationState, byte[] responseToken, byte[] mechListMIC)
{
Asn1OctetString asn1RespToken = null;
Asn1OctetString asn1MechListMIC = null;
if (responseToken != null)
{
asn1RespToken = new Asn1OctetString(responseToken);
}
if (mechListMIC != null)
{
asn1MechListMIC = new Asn1OctetString(mechListMIC);
}
NegTokenResp negToken = new NegTokenResp(negotiationState,
this.Context.NegotiatedMechType, asn1RespToken, asn1MechListMIC);
SpngNegTokenResp spngToken = new SpngNegTokenResp(negToken);
return(spngToken);
}