public static bool IsClientResponseValid(byte[] message, ref State state)
{
Common.SecurityBufferDesciption ClientToken = new Common.SecurityBufferDesciption(message);
Common.SecurityBufferDesciption ServerToken = new Common.SecurityBufferDesciption(Common.MaximumTokenSize);
try
{
int result;
result = AcceptSecurityContext(ref state.Credentials, // [in] handle to the credentials
ref state.Context, // [in/out] handle of partially formed context. Always NULL the first time through
ref ClientToken, // [in] pointer to the input buffers
Common.StandardContextAttributes, // [in] required context attributes
Common.SecurityNativeDataRepresentation, // [in] data representation on the target
out state.Context, // [in/out] receives the new context handle
out ServerToken, // [in/out] pointer to the output buffers
out Common.NewContextAttributes, // [out] receives the context attributes
out Common.NewLifeTime); // [out] receives the life span of the security context
if (result != Common.SuccessfulResult)
{
return false;
}
}
finally
{
ClientToken.Dispose();
ServerToken.Dispose();
}
return true;
}
public static bool IsServerChallengeAcquired(ref byte[] message, out State state)
{
Common.SecurityBufferDesciption ClientToken = new Common.SecurityBufferDesciption(message);
Common.SecurityBufferDesciption ServerToken = new Common.SecurityBufferDesciption(Common.MaximumTokenSize);
try
{
int result;
state = new State();
result = AcquireCredentialsHandle(WindowsIdentity.GetCurrent().Name,
"NTLM",
Common.SecurityCredentialsInbound,
IntPtr.Zero,
IntPtr.Zero,
0,
IntPtr.Zero,
ref state.Credentials,
ref Common.NewLifeTime);
if (result != Common.SuccessfulResult)
{
// Credentials acquire operation failed.
return false;
}
result = AcceptSecurityContext(ref state.Credentials, // [in] handle to the credentials
IntPtr.Zero, // [in/out] handle of partially formed context. Always NULL the first time through
ref ClientToken, // [in] pointer to the input buffers
Common.StandardContextAttributes, // [in] required context attributes
Common.SecurityNativeDataRepresentation, // [in] data representation on the target
out state.Context, // [in/out] receives the new context handle
out ServerToken, // [in/out] pointer to the output buffers
out Common.NewContextAttributes, // [out] receives the context attributes
out Common.NewLifeTime); // [out] receives the life span of the security context
if (result != Common.IntermediateResult)
{
// Client challenge issue operation failed.
return false;
}
}
finally
{
message = ServerToken.GetBytes();
ClientToken.Dispose();
ServerToken.Dispose();
}
return true;
}
