.NET DES encryption using a weak key

Hi all,

I have a problem with DES encryption. I have to use DES encryption with the key "00 00 00 00 00 00 00 00" (I must authenticate me first before changing the key). But the .NET DES class has a static method named "IsWeakKey" which not allowed me to use this key.

Have you any solution for me, please ?

Thanks