C＃在x64上崩溃

Question

I have a DLL created in VS 2008 and written in C#. The dll project builds with the "Any CPU" flag.

When it is deployed and run on a Dell/Intel Windows 7 x64 machine it starts up OK, but it crashes when it tries to start using cryptography -- TDESAlgorithm.CreateDecryptor();

This is part of the mscorlib.dll.

I've built the app as targeting x64, but it also crashes in the same place. It runs fine on 32 bit machines.

How can I get this to run successfully on x64?

Answer 1

The solution I got is to compile as x86 and then run it (as 32 bits) application on the 64 bits machine. This could be a solution as long as you don't need 64bits to run your app. - Gaël Mo

I'd just like to point out that compiling and running for x86 on a 64 bit machine is NOT an answer... Joe would like to know why its crashing in x64 mode... obviously running in x86 mode works on x64 machines. If you couldn't get your car to run with a certain after-market part, would you consider it a valid answer if I told you to simply run the car without the part in it? Obviously not... Think carefully about your answers before posting them ok?

Does it run on the x64 machine if you build it for x86? If so, they something isn't 64-bit ready. – sgmoore

I agree... I'd like to add that if you do not have the source code (you probably don't) then you are out of luck I'm afraid... I found THIS article that explains more fully... Apart from that, you may need to look into a different DES decryption library... OpenSSL/SSH perhaps?

Answer 2

I ran into similar problem with windows services created in .NET. It was throwing exception and the Windows log file indicated errors in mscorlib.dll and kernel32.dll (if I remember correctly). No external 32 bits dll or special codes was used, only plain .NET.

The solution I got is to compile as x86 and then run it (as 32 bits) application on the 64 bits machine. This could be a solution as long as you don't need 64bits to run your app.