GetKeyedHashRequest.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / infocard / Service / managed / Microsoft / InfoCards / GetKeyedHashRequest.cs / 1 / GetKeyedHashRequest.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------
namespace Microsoft.InfoCards
{ 
    using System;
    using System.Collections; 
    using System.Diagnostics; 
    using System.Security.Principal;
    using System.Threading; //ManualResetEvent 
    using System.ComponentModel; //Win32Exception
    using System.IO; //Stream
    using System.Text;
    using IDT = Microsoft.InfoCards.Diagnostics.InfoCardTrace; 

    // 
    // Summary: 
    // Wraps a request to get a remoted KeyedHashAlgorithm based on a SymmetricCryptoSession.
    // 

    class GetKeyedHashRequest : ClientRequest
    {
        // 
        // The cryptosession id we are attaching to.
        // 
        int m_cryptoSession; 

        // 
        // The returned transform session.
        //
        HashCryptoSession m_hashSession;
 
        //
        // Sumamry: 
        // Construct a GetKeyedHashRequest object 
        //
        // Arguments: 
        //  callingProcess          - The process in which the caller originated.
        //  callingIdentity         - The WindowsIdentity of the caller
        //  rpcHandle               - The handle of the native RPC request
        //  inArgs                  - The stream to read input data from 
        //  outArgs                 - The stream to write output data to
        // 
        public GetKeyedHashRequest( Process callingProcess, WindowsIdentity callingIdentity, IntPtr rpcHandle, Stream inArgs, Stream outArgs ) 
            : base( callingProcess, callingIdentity, rpcHandle, inArgs, outArgs )
        { 
            IDT.TraceDebug( "Intiating a GetCryptoTransform request" );
        }

 

        protected override void OnMarshalInArgs() 
        { 
            IDT.DebugAssert( null != InArgs, "null inargs" );
            BinaryReader reader = new InfoCardBinaryReader( InArgs, Encoding.Unicode ); 

            m_cryptoSession     = reader.ReadInt32();

            IDT.ThrowInvalidArgumentConditional( 0 == m_cryptoSession, "cryptoSession" ); 
        }
 
        // 
        // Summary:
        // Attach to the appropriate cryptosession and get a keyed hash. 
        //
        protected override void OnProcess()
        {
            SymmetricCryptoSession session = 
                ( SymmetricCryptoSession )CryptoSession.Find( m_cryptoSession, CallerPid, RequestorIdentity.User );
 
            m_hashSession = session.GetKeyedHash(); 
        }
 

        //
        // Summary:
        // Return our HashCryptoSession. 
        //
        protected override void OnMarshalOutArgs() 
        { 
            IDT.DebugAssert( null != OutArgs, "Null out args" );
            BinaryWriter writer = new BinaryWriter( OutArgs, Encoding.Unicode ); 

            IDT.DebugAssert( null != m_hashSession, "unexpected null outgoing transfromSession" );
            m_hashSession.Write( writer );
            writer.Flush(); 
        }
 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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