Issue 466 partial

CryptoManager encryption

Allow key size different from block size for block ciphers that support it (e.g., Blowfish as in Blowfish/CFB/NoPadding", 128) and block ciphers modes that use no initialization vector (e.g., ECB as in "DES/ECB/PKCS5Padding", 64). Note that this is accomplished without adding an initialization vector parameter to the encryption API. Instead, if the Cipher.getBlockSize is non-zero, the Cipher object is first instantiated with that size initialization vector, and if that fails, initialized without an initialization vector.