curl

Documentation

Overview

Package curl implements the BCT Curl hashing function computing multiple Curl hashes in parallel.

Index

• Constants
• type Curl
  • func NewCurlP81() *Curl
  • func (c *Curl) Absorb(src []trinary.Trits, tritsCount int) error
  • func (c *Curl) Clone() *Curl
  • func (c *Curl) CopyState(l, h []uint)
  • func (c *Curl) Reset()
  • func (c *Curl) Squeeze(dst []trinary.Trits, tritsCount int) error
• type SpongeDirection

Constants

const (
	// StateSize is the size of the Curl hash function.
	StateSize = consts.HashTrinarySize * 3

	// NumRounds is the number of rounds in a Curl transform.
	NumRounds = 81
)

const MaxBatchSize = bits.UintSize

MaxBatchSize is the maximum number of Curl hashes that can be computed in one batch.

Types

type Curl

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

Curl is the BCT version of the Curl hashing function.

func NewCurlP81

func NewCurlP81() *Curl

NewCurlP81 returns a new BCT Curl-P-81.

func (*Curl) Absorb

func (c *Curl) Absorb(src []trinary.Trits, tritsCount int) error

Absorb fills the states of the sponge with src; each element of src must have the length tritsCount. The value tritsCount has to be a multiple of HashTrinarySize.

func (*Curl) Clone

func (c *Curl) Clone() *Curl

Clone returns a deep copy of the current BCT Curl instance.

func (*Curl) CopyState

func (c *Curl) CopyState(l, h []uint)

CopyState copies the content of the Curl state buffer into l and h.

func (*Curl) Reset

func (c *Curl) Reset()

Reset the internal state of the BCT Curl instance.

func (*Curl) Squeeze

func (c *Curl) Squeeze(dst []trinary.Trits, tritsCount int) error

Squeeze squeezes out trits of the given length. The value tritsCount has to be a multiple of HashTrinarySize.

type SpongeDirection

type SpongeDirection int

SpongeDirection indicates the direction trits are flowing through the sponge.

const (
	// SpongeAbsorbing indicates that the sponge is absorbing input.
	SpongeAbsorbing SpongeDirection = iota
	// SpongeSqueezing indicates that the sponge is being squeezed.
	SpongeSqueezing
)