threefish

Documentation

Overview

Package threefish implements the Threefish tweakable block cipher.

Index

• Constants
• func GETU64(ptr []byte) uint64
• func NewCipher(key, tweak []byte) (cipher.Block, error)
• func NewCipher1024(key, tweak []byte) (cipher.Block, error)
• func NewCipher256(key, tweak []byte) (cipher.Block, error)
• func NewCipher512(key, tweak []byte) (cipher.Block, error)
• func PUTU64(ptr []byte, a uint64)
• type KeySizeError
  • func (e KeySizeError) Error() string
• type TweakSizeError
  • func (e TweakSizeError) Error() string

Constants

const (
	// Size of a 1024-bit block in bytes
	BlockSize1024 = 128
)

const (
	// Size of a 256-bit block in bytes
	BlockSize256 = 32
)

const (
	// Size of a 512-bit block in bytes
	BlockSize512 = 64
)

Functions

func GETU64

func GETU64(ptr []byte) uint64

func NewCipher

func NewCipher(key, tweak []byte) (cipher.Block, error)

NewCipher creates and returns a new cipher.Block. data bytes use BigEndian

func NewCipher1024

func NewCipher1024(key, tweak []byte) (cipher.Block, error)

NewCipher1024 creates a new Threefish cipher with a block size of 1024 bits. The key argument must be 64 bytes and the tweak argument must be 16 bytes.

func NewCipher256

func NewCipher256(key, tweak []byte) (cipher.Block, error)

NewCipher256 creates a new Threefish cipher with a block size of 256 bits. The key argument must be 32 bytes and the tweak argument must be 16 bytes.

func NewCipher512

func NewCipher512(key, tweak []byte) (cipher.Block, error)

NewCipher512 creates a new Threefish cipher with a block size of 512 bits. The key argument must be 64 bytes and the tweak argument must be 16 bytes.

func PUTU64

func PUTU64(ptr []byte, a uint64)

Types

type KeySizeError

type KeySizeError int

A KeySizeError is returned when the provided key isn't the correct size.

func (KeySizeError) Error

func (e KeySizeError) Error() string

Error describes a KeySizeError.

type TweakSizeError

type TweakSizeError struct{}

A TweakSizeError is returned when the provided tweak isn't the correct size.

func (TweakSizeError) Error

func (e TweakSizeError) Error() string

Error describes a TweakSizeError.