SafeCryptContextHandle.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Configuration / Microsoft / Win32 / SafeCryptContextHandle.cs / 1305376 / SafeCryptContextHandle.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace Microsoft.Win32 { 
    using System; 
    using System.Security.Permissions;
    using Microsoft.Win32.SafeHandles; 
    using System.Configuration;

    // Safehandle for crypt context handles
    [System.Security.SuppressUnmanagedCodeSecurityAttribute()] 
    internal sealed class SafeCryptContextHandle : SafeHandleZeroOrMinusOneIsInvalid {
        [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)] 
        internal SafeCryptContextHandle() 
            : base(true) {
        } 

        [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)]
        internal SafeCryptContextHandle(IntPtr handle, bool ownsHandle)
            : base(ownsHandle) { 
            SetHandle(handle);
        } 
 
        override protected bool ReleaseHandle() {
            if (handle != IntPtr.Zero) { 
                UnsafeNativeMethods.CryptReleaseContext(this, 0);
                return true;
            }
            return false; 
        }
    } 
} 


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

namespace Microsoft.Win32 { 
    using System; 
    using System.Security.Permissions;
    using Microsoft.Win32.SafeHandles; 
    using System.Configuration;

    // Safehandle for crypt context handles
    [System.Security.SuppressUnmanagedCodeSecurityAttribute()] 
    internal sealed class SafeCryptContextHandle : SafeHandleZeroOrMinusOneIsInvalid {
        [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)] 
        internal SafeCryptContextHandle() 
            : base(true) {
        } 

        [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)]
        internal SafeCryptContextHandle(IntPtr handle, bool ownsHandle)
            : base(ownsHandle) { 
            SetHandle(handle);
        } 
 
        override protected bool ReleaseHandle() {
            if (handle != IntPtr.Zero) { 
                UnsafeNativeMethods.CryptReleaseContext(this, 0);
                return true;
            }
            return false; 
        }
    } 
} 


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

Link Menu

Network programming in C#, Network Programming in VB.NET, Network Programming in .NET
This book is available now!
Buy at Amazon US or
Buy at Amazon UK