- getChunkMask
- getPos
- initCipherForBlock
- invokeCipher
Helper function for overriding the cipher invocation, i.e. XOR doesn't use a
cipher and uses it's ow
- nextChunk
- read
- readByte
- readFully
- readInt
- readLong
- readPlain
Used when BIFF header fields (sid, size) are being read. The internal Cipher
instance must step even
- readShort