RemoteX509AsymmetricSecurityKey.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 / RemoteX509AsymmetricSecurityKey.cs / 1 / RemoteX509AsymmetricSecurityKey.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------
namespace Microsoft.InfoCards
{ 
    using System;
    using System.Security.Cryptography; 
    using System.Security.Cryptography.X509Certificates; 
    using System.Security.Cryptography.Xml;
    using System.IdentityModel.Tokens; 
    using System.ServiceModel;
    using System.ServiceModel.Security;
    using System.ServiceModel.Security.Tokens;
    using IDT=Microsoft.InfoCards.Diagnostics.InfoCardTrace; 

 
    // 
    // Summary:
    //  Remotes all PrivateKey operations to the RPC service running in the agent. 
    //  Any public key operations are performed with the local public key
    //
    class RemoteX509AsymmetricSecurityKey : X509AsymmetricSecurityKey, IDisposable
    { 
        X509Certificate2 m_cert;
        object m_sync; 
        bool m_disposed; 

        public RemoteX509AsymmetricSecurityKey(X509Certificate2 cert) 
            : base( cert )
        {
            m_cert = cert;
 
            //
            // If the key is not our special remote key, we shouldn't be using 
            // this object. 
            //
            if( !( m_cert.PrivateKey is RemoteCryptoRsaServiceProvider) ) 
            {
                throw IDT.ThrowHelperError( new NotSupportedException() );
            }
 
            m_sync = new object();
        } 
 
        //
        // Summary: 
        //  Return a specified key set.
        //
        // Arguments:
        //  algorithmUri:   the name of the algorithm 
        //  privateKey:     indicates if the private key (remote key) is returned.
        // 
        public override AsymmetricAlgorithm GetAsymmetricAlgorithm(string algorithmUri, bool privateKey) 
        {
            if( !IsSupportedAlgorithm( algorithmUri ) ) 
            {
                throw IDT.ThrowHelperError( new NotSupportedException() );
            }
 
            return base.GetAsymmetricAlgorithm( algorithmUri, privateKey );
        } 
 
        //
        // Summary: 
        //  Returns the Signature verifier
        //
        public override AsymmetricSignatureDeformatter GetSignatureDeformatter(string algorithmUri)
        { 
            if( !IsSupportedAlgorithm( algorithmUri ) )
            { 
                throw IDT.ThrowHelperError( new NotSupportedException() ); 
            }
 
            //
            // This will use the public key, which we don't need to wrap.
            //
            return base.GetSignatureDeformatter( algorithmUri ); 
        }
 
        // 
        // Summary:
        //  Returns the Signature creator 
        //
        public override AsymmetricSignatureFormatter GetSignatureFormatter(string algorithmUri)
        {
            if( !IsSupportedAlgorithm( algorithmUri ) ) 
            {
                throw IDT.ThrowHelperError( new NotSupportedException() ); 
            } 

 
            //
            // The private key object must be our special private key.
            //
            RemoteAsymmetricSignatureFormatter formatter = new RemoteAsymmetricSignatureFormatter(); 
            formatter.SetKey( m_cert.PrivateKey );
            return formatter; 
        } 

        // 
        // Summary:
        //  Tests if a specific algorithm is supported.
        //
        public override bool IsSupportedAlgorithm(string algorithmUri) 
        {
            switch (algorithmUri) 
            { 
                case SignedXml.XmlDsigRSASHA1Url:
                case EncryptedXml.XmlEncRSA15Url: 
                case EncryptedXml.XmlEncRSAOAEPUrl:
                    return base.IsSupportedAlgorithm( algorithmUri );
                case SignedXml.XmlDsigDSAUrl:
                default: 
                    return false;
            } 
        } 

        void IDisposable.Dispose() 
        {
            if ( m_disposed )
            {
                return; 
            }
 
            lock( m_sync ) 
            {
                if( m_disposed ) 
                {
                    return;
                }
 
                m_disposed = true;
                IDisposable disposable = m_cert.PrivateKey as IDisposable; 
                if( null != disposable ) 
                {
                    disposable.Dispose(); 
                }

                disposable = m_cert.PublicKey.Key as IDisposable;
                if( null != disposable ) 
                {
                    disposable.Dispose(); 
                } 
            }
        } 
    }

}

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

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