shake

Documentation

Overview

Package shake provides a thin wrapper around Go's standard library crypto/sha3 SHAKE256 implementation. This exists so go-hqc has zero external dependencies while maintaining a clean internal API boundary.

Index

• type State
  • func New256() *State
  • func (st *State) Read(p []byte) (int, error)
  • func (st *State) Reset()
  • func (st *State) Write(p []byte) (int, error)

Types

type State

type State struct {
	// contains filtered or unexported fields
}

State wraps a SHAKE256 instance. After Write calls are complete, call Read to squeeze output. Write after Read panics (per SHAKE spec).

func New256

func New256() *State

New256 returns a new SHAKE256 state ready for absorbing.

func (*State) Read

func (st *State) Read(p []byte) (int, error)

Read squeezes output from the SHAKE state. It never returns an error; n always equals len(p).

func (*State) Reset

func (st *State) Reset()

Reset resets the state to a fresh SHAKE256, discarding all absorbed data.

func (*State) Write

func (st *State) Write(p []byte) (int, error)

Write absorbs data into the SHAKE state. It never returns an error.