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Re: Protect dll from Useuse the OS (Windows) security settings for the dll: Remove all read/write access rights for all users and groups, then grant read & execute permission for a specific user. This can be done programmatically during installation. Provided that users have no administrative privileges, there is no chance for a user to even read-access the dll. On the othe hand, this means that the (your) application must run under a specific (non-user) account. Sorry if it sounds complicated, my english is somewhat limited... HTH, Ulrich Show quoteHide quote "Essam-ag" <Essam***@discussions.microsoft.com> wrote in message news:E62E9168-613E-4FC4-888D-D5A26DFB554F@microsoft.com... > Hi > I was search all this week about someway to protect dll files from use > from unauthorized user, that when I create library in C#.net and put > my methods in dll files I want just me to use this dll. > but when distribute last executable program that use this dll, maybe > someone take this dll and use it. > > I read about StrongNameIdentityPermissionAttribute in Microsoft CAS > http://msdn.microsoft.com/en-us/library/system.security.permissions.s... > > but they said it not useful in .net framework 3.5 and protect way just > used in old release > then I read about Publisher Certifications and try it using test > certificate but it look like it just use to make my application from > known source not to protect dll from use.. > > I appreciate any help in this field > Thanks in advance > > Regards > Essam |
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