Hey , Those are the links for Cryptography APi in VC++ , actually i'm successfully encrypting in VC++ as well as c# ,but i'm having problems decrypting a file in c# which is previously encrypted in vc++ . Anyways Thnx for the reply ! Amey

Hello All, I am currently working in Honeywell and developing Licensing Utility . I am in a stage where I want to decrypt a previously encrypted file in VC++ in C# i.e. file encrypted in VC++ using windows cryptAPI and to be decrypted in C# . The problem is that in VC++ we create hash using CryptCreateHash , then add to it secret password using CryptHashData and then derive session key based on tht has hash key . The session key is further used for encryption and decryption . In C# , I found the basic encryption / decryption classes , setting of IV , key etc but I did find anything related to the hash key . In VC++ we are using RC2 for cryptography of plaintext and MD5 for hash key . Pls helpme out guys !

Thnx guys , Ur help means a lot to me !

Hi Guys , I'm a s/w engineer working in Honeywell . I am a fresher and have some experience working in vc++,mfc,COM/DCOM and other microsoft technologies. I also have read some books on .NET and C# , but I found most of them (all) not of much help (I would rather use MSDN ). Now all the new development tht I would be doing would be in .NET . So can anyone suggest a good book in .NET and C# which would go into detail and would be like a complete bible instead of jst explaining the APIs . Any help would be appreciated . Amey

U have the source code ? If yes u can debug using dll host !

Hi GaimaSun , Ya, tht's the first thing tht i've tried , problem is that there memory corruption somewhere which is getting overlooked in the debug version but as release version optimises memory allocations, its giving an access violation while releasing the inner component . Thinking of using purify for this problem, wht's ur suggesion . thanks for ur response. Best Regards, Amey

Hi all , I have created an instance of a COM+ component in another component . All works extremely fine in Debug Version but when compiled in Release version , the Release (.Release()) of the component gives an access violation exception . Can anyone please help me solve this problem . Thanks and Best Regards, Amey