1.0.23-beta

Changes to the Ciphers v1.10.2

Added MAC keyed hashers like HMAC-SHA256 or MAC-3DES.
Added a MAC key importing/exporting utility MacKey in the style of EncryptedKey or ProtectedKey.
Changed the access of the classes HashAlgorithmFactory,KeyedHashAlgorithmFactory,SymmetricAlgorithmFactory, KeyLocationStrategy to public.