Support is provided for the "Suite B" set of cryptographic algorithms as specified by the National Security Agency (NSA).
Cryptography Next Generation (CNG) classes are supported on XP and Vista systems.
The System.Security.Cryptography.AesManaged class allows custom block size, iteration counts and feedback modes to support any Rijndael based encryption.
None of the above
“Suite B”, CNG and System.Security.Cryptography.AesManaged not available under .net 3.5. Also, Cryptography API Next Generation(CNG) is available from Windows Vista™and onward.Useful resources,Cryptography, AesManagedclass