merkle

Documentation

Index

• Constants
• func CompactLayerToSliceHashes(compactLayer string) (hashes [][sha256.Size]byte, err error)
• func Log2RoundingUp(n uint) (ret uint)
• func Root(hashes [][sha256.Size]byte) [sha256.Size]byte
• func RootWithPadHash(hashes [][sha256.Size]byte, padHash [sha256.Size]byte) [sha256.Size]byte
• func RoundUpToPowerOfTwo(n uint) (ret uint)
• type Hash
  • func NewHash() *Hash
  • func (h *Hash) BlockSize() int
  • func (h *Hash) Reset()
  • func (h *Hash) Size() int
  • func (h *Hash) Sum(b []byte) []byte
  • func (h *Hash) SumMinLength(b []byte, length int) []byte
  • func (h *Hash) Write(p []byte) (n int, err error)

Constants

const BlockSize = 1 << 14 // 16KiB

The leaf block size for BitTorrent v2 Merkle trees.

Functions

func CompactLayerToSliceHashes

func CompactLayerToSliceHashes(compactLayer string) (hashes [][sha256.Size]byte, err error)

func Log2RoundingUp

func Log2RoundingUp(n uint) (ret uint)

func Root

func Root(hashes [][sha256.Size]byte) [sha256.Size]byte

func RootWithPadHash

func RootWithPadHash(hashes [][sha256.Size]byte, padHash [sha256.Size]byte) [sha256.Size]byte

func RoundUpToPowerOfTwo

func RoundUpToPowerOfTwo(n uint) (ret uint)

Types

type Hash

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

func NewHash

func NewHash() *Hash

func (*Hash) BlockSize

func (h *Hash) BlockSize() int

func (*Hash) Reset

func (h *Hash) Reset()

func (*Hash) Size

func (h *Hash) Size() int

func (*Hash) Sum

func (h *Hash) Sum(b []byte) []byte

func (*Hash) SumMinLength

func (h *Hash) SumMinLength(b []byte, length int) []byte

Sums by extending with zero hashes for blocks missing to meet the given length. Necessary for piece layers hashes for file tail blocks that don't pad to the piece length.

func (*Hash) Write

func (h *Hash) Write(p []byte) (n int, err error)