SN v2.0 Works With PFX Files

.NET Framework 2.0 sn tool has the ability to work with PKCS #12 PFX files in addition to SNK files.  This offers the benefit of having your keys stored in encrypted format rather than the standard plain text.   You can get more detailed information from the following blog:

https://blogs.msdn.com/shawnfa/archive/2006/02/14/531921.aspx