Hash for the holidays [Managed implementation of CRC32 and MD5 algorithms updated; new release of ComputeFileHashes for Silverlight, WPF, and the command-line!]

It feels like a long time since I last wrote about hash functions (though certain curmudgeonly coworkers would say not long enough!), and there were a few loose ends I've been meaning to deal with... Aside: If my hashing efforts are new to you, more information can be found in my introduction to the ComputeFileHashes command-line tool and the subsequent release of ComputeFileHashes versions for