sm4

Documentation

Index

• Constants
• Variables
• func NewCipher(key []byte) (cipher.Block, error)
• func T(X uint32) uint32
• func T_non_lin_sub(X uint32) uint32
• func T_slow(X uint32) uint32
• type KeySizeError
  • func (k KeySizeError) Error() string

Constants

const BlockSize = 16

const KeySchedule = 32

Variables

var CK = [32]uint32{
	0x00070E15, 0x1C232A31, 0x383F464D, 0x545B6269,
	0x70777E85, 0x8C939AA1, 0xA8AFB6BD, 0xC4CBD2D9,
	0xE0E7EEF5, 0xFC030A11, 0x181F262D, 0x343B4249,
	0x50575E65, 0x6C737A81, 0x888F969D, 0xA4ABB2B9,
	0xC0C7CED5, 0xDCE3EAF1, 0xF8FF060D, 0x141B2229,
	0x30373E45, 0x4C535A61, 0x686F767D, 0x848B9299,
	0xA0A7AEB5, 0xBCC3CAD1, 0xD8DFE6ED, 0xF4FB0209,
	0x10171E25, 0x2C333A41, 0x484F565D, 0x646B7279,
}

* Constant Key

var FK = [4]uint32{
	0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc,
}

* Family Key

Functions

func NewCipher

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

NewCipher creates and returns a new cipher.Block. key is 16 bytes, so 32 bytes is used half bytes. so the cipher use 16 bytes key. key bytes and src bytes is BigEndian type.

func T

func T(X uint32) uint32

func T_non_lin_sub

func T_non_lin_sub(X uint32) uint32

func T_slow

func T_slow(X uint32) uint32

Types

type KeySizeError

type KeySizeError int

func (KeySizeError) Error

func (k KeySizeError) Error() string