Blake2b.CPortable

The portable C-implementation of Blake2b.

Documentation

name :: String

description :: String

type Prim = Blake2b

type Internals = Blake2bMem

type BufferAlignment = 32

type BufferPtr = AlignedBlockPtr BufferAlignment Prim

additionalBlocks :: BlockCount Blake2b

processBlocks :: BufferPtr -> BlockCount Blake2b -> Blake2bMem -> IO ()

processLast :: BufferPtr -> BYTES Int -> Blake2bMem -> IO ()

Process the last bytes. The last block of the message (whether it is padded or not) should necessarily be processed by the processLast function as one needs to set the finalisation flag for it.

Let us consider two cases.

1. The message is empty. In which case the padding is 1-block size. This needs to be processed as the last block
2. If the message is non-empty then the padded message is the least multiple n of block size that is greater than or equal to the input and hence is at least 1 block in size. Therefore, we should be compressing a total n-1 blocks using the block compression function at the last block using the finalisation flags.