# README
go-fil-commp-hashhash
A hash.Hash implementation of fil-commitment-unsealed
Package commp allows calculating a Filecoin Unsealed Commitment (commP/commD) given a bytestream. It is implemented as a standard hash.Hash() interface, with the entire padding and treebuilding algorithm written in golang.
The returned digest is a 32-byte raw commitment payload. Use something like DataCommitmentV1ToCID in order to convert it to a proper cid.Cid.
The output of this library is 100% identical to ffi.GeneratePieceCIDFromFile()
Lead Maintainer
License
# Functions
PadCommP is experimental, do not use it.
# Constants
result of log2( 64 GiB / 32 ).
MaxPiecePayload is the maximum amount of data that one can Write() to the Calc object, before needing to derive a Digest().
MaxPieceSize is the current maximum size of the rust-fil-proofs proving tree.
MinPiecePayload is the smallest amount of data for which FR32 padding has a defined result.