rfc6962

Documentation

Overview

Package rfc6962 provides hashing functionality according to RFC6962.

Index

• Constants
• Variables
• type Hasher
  • func New(h crypto.Hash) *Hasher
  • func (t *Hasher) EmptyRoot() []byte
  • func (t *Hasher) HashChildren(l, r []byte) []byte
  • func (t *Hasher) HashLeaf(leaf []byte) ([]byte, error)

Constants

const (
	RFC6962LeafHashPrefix = 0
	RFC6962NodeHashPrefix = 1
)

Domain separation prefixes

Variables

var DefaultHasher = New(crypto.SHA256)

DefaultHasher is a SHA256 based LogHasher.

Types

type Hasher

type Hasher struct {
	crypto.Hash
}

Hasher implements the RFC6962 tree hashing algorithm.

func New

func New(h crypto.Hash) *Hasher

New creates a new Hashers.LogHasher on the passed in hash function.

func (*Hasher) EmptyRoot

func (t *Hasher) EmptyRoot() []byte

EmptyRoot returns a special case for an empty tree.

func (*Hasher) HashChildren

func (t *Hasher) HashChildren(l, r []byte) []byte

HashChildren returns the inner Merkle tree node hash of the the two child nodes l and r. The hashed structure is NodeHashPrefix||l||r.

func (*Hasher) HashLeaf

func (t *Hasher) HashLeaf(leaf []byte) ([]byte, error)

HashLeaf returns the Merkle tree leaf hash of the data passed in through leaf. The data in leaf is prefixed by the LeafHashPrefix.