Class Block.cbc_decrypt

Add Cipher Block Chaining (CBC) to the given block cipher in decryption mode. This works like Cryptokit.Block.cbc_encrypt, except that input blocks are first decrypted by the block cipher before being xor-ed with the previous input block.

method blocksize : int

The size in bytes of the blocks manipulated by the cipher.

method transform : bytes -> int -> bytes -> int -> unit

transform src spos dst dpos encrypts or decrypts one block of data. The input data is read from byte array src at positions spos, ..., spos + blocksize - 1, and the output data is stored in byte array dst at positions dpos, ..., dpos + blocksize - 1.

method wipe : unit

Erase the internal state of the block cipher, such as all key-dependent material.