suresh sm

• Sep 17th, 2005

 

Identity permissions control code access from one assembly to another. You can use identity permissions, which are a subset of code access permissions, either declaratively or imperatively

vidyajnath

 Profile Answers by vidyajnath 

• Jun 23rd, 2010

 

Code access security (CAS) is a new feature provided by the .NET Common Language Runtime. CAS is a security model that lets you grant or deny execution permissions to an assembly according to its "properties," called evidence, such as its strong name or publisher.
In case you ask yourself how this security model can be useful, just consider if the Windows operating system could currently apply a CAS such that no code downloaded from the Internet as a mail attachment was allowed to run (no matter if who’s running Outlook Express is the computer administrator). Got the point? No mail virus would have ever appeared.