While I am awaiting my Fez Raptor in the mail I have been reading about netmf and the G400-S. I seem to have a decent grasp of i2c communication; however, I am still unsure about AES256-CBC and HMAC. I did stumble across:
http://download.codeplex.com/download?ProjectName=netmf&DownloadId=257829
Encryption is still a bit fuzzy to me and I was wondering if there is a C# Encryption library out there that wraps the built in netmf Crypto library?