pinvoke.net: Edit: crypt32.CertCreateCTLContext

@msdn=http://msdn.microsoft.com/en-us/library/aa376037(VS.85).aspx
@pinvoke=http://pinvoke.net/$$$.htm

Summary: The CertCreateCTLContext function creates a certificate trust list (CTL) context from an encoded CTL. The created context is not persisted to a certificate store. The function makes a copy of the encoded CTL within the created context.

This function actually returns a CTL_CONTEXT pointer (please see CTL_CONTEXT on this site)

!!!!C# Signature:
	[DllImport("crypt32.dll", SetLastError = true)]
	public static extern IntPtr CertCreateCTLContext(uint dwMsgAndCertEncodingType, IntPtr pbCtlEncoded, uint cbCtlEncoded);
!!!!VB Signature:

!!!!Related Constants
These constants are used for the dwMsgAndCertEncodingType.

public const int X509_ASN_ENCODING = 0x00000001;
	public const int PKCS_7_ASN_ENCODING = 0x00010000;

See sample code for usage.

!!!!User-Defined Types:

!!!!Alternative Managed API:

!!!!Notes:
The CTL_CONTEXT must be freed by calling CertFreeCTLContext. CertDuplicateCTLContext can be called to make a duplicate. CertSetCTLContextProperty and CertGetCTLContextProperty can be called to store and read properties for the CTL.

!!!!Tips & Tricks:
Please add some!

!!!!Sample Code:

using (FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read))
	{
		certData = new Byte[fileStream.Length];
		fileStream.Read(certData, 0, (int)fileStream.Length);
	}

certDataBlob = Marshal.AllocHGlobal(certData.Length);

try
	{
		Marshal.Copy(certData, 0, certDataBlob, certData.Length);
		IntPtr ctlContextPtr = CertCreateCTLContext(
			X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, 
			certDataBlob, (uint)certData.Length);
		if (ctlContextPtr == IntPtr.Zero)
		{
			throw new Win32Exception(Marshal.GetLastWin32Error(), "CertCreateCTLContext");
		}
		try
		{
			CTL_CONTEXT ctlContext = (CTL_CONTEXT)Marshal.PtrToStructure(ctlContextPtr, typeof(CTL_CONTEXT));
		}
		finally
		{
			CertFreeCTLContext(ctlContextPtr);
		}
	}
	finally
	{
		Marshal.FreeHGlobal(certDataBlob);
	}

Documentation: CertCreateCTLContext@msdn on MSDN