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.NET Forum / .NET Framework / New Users / May 2004Retrieving Authenticode countersignature time
I need to port some C++ code to .Net/c# One function we use retrieves the countersignature time from an authenticode signed dll or exe Is there a way to do this using existing .Net classes or do I have to use P/Invoke for most of it? Hello, Thanks for your post. Which function do you call in C++ to retrieve the countersignature time? I suggest you to check whether your are find corresponding .NET class method according to the MSDN article below: Microsoft Win32 to Microsoft .NET Framework API Map http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dndotnet/ht ml/win32map.asp If there is no such mapping, you will have to use P/Invoke. Hope this helps. Regards, HuangTM Microsoft Online Partner Support MCSE/MCSD Get Secure! -- www.microsoft.com/security This posting is provided "as is" with no warranties and confers no rights. > Which function do you call in C++ to retrieve the countersignature time? CryptQueryObject, CryptMsgGetParam, and CryptDecodeObject. These functions are missing from the document you referenced. Actually it seems that all CryptoAPI functions are missing from that document even though there are some crypto classes in .Net. Is there a utility that can easily create c# wrappers around API calls and structures and COM interfaces? Or is there a reference library with all of this already done? Hi, Thanks for your response. You will need to use P/Invoke to call these unmanaged APIs in .NET. Please refer to the sample in the following MSDN artcle: EncryptTo/DecryptTo: Encryption in .NET with CryptoAPI Certificate Stores http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dncapi/html /encryptdecrypt2a.asp In addtion, I believe the article below is helpful on P/Invoke: Consuming Unmanaged DLL Functions http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/htm l/cpconConsumingUnmanagedDLLFunctions.asp Hope this helps. Regards, HuangTM Microsoft Online Partner Support MCSE/MCSD Get Secure! -- www.microsoft.com/security This posting is provided "as is" with no warranties and confers no rights. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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