sm4

Documentation

Index

• Constants
• Variables
• func NewCipher(key []byte) (cipher.Block, error)
• func SetIV(iv []byte) error
• func Sm4CFB(key []byte, in []byte, mode bool) (out []byte, err error)
• func Sm4Cbc(key []byte, in []byte, mode bool) (out []byte, err error)
• func Sm4Decrypt(key, iv, cipherText []byte) ([]byte, error)
• func Sm4Ecb(key []byte, in []byte, mode bool) (out []byte, err error)
• func Sm4Encrypt(key, iv, plainText []byte) ([]byte, error)
• func Sm4OFB(key []byte, in []byte, mode bool) (out []byte, err error)
• func WriteKeyToPem(key SM4Key, pwd []byte) ([]byte, error)
• func WriteKeyToPemFile(FileName string, key SM4Key, pwd []byte) error
• type SM4Key
  • func ReadKeyFromPem(data []byte, pwd []byte) (SM4Key, error)
  • func ReadKeyFromPemFile(FileName string, pwd []byte) (SM4Key, error)
• type Sm4Cipher
  • func (c *Sm4Cipher) BlockSize() int
  • func (c *Sm4Cipher) Decrypt(dst, src []byte)
  • func (c *Sm4Cipher) Encrypt(dst, src []byte)

Constants

const BlockSize = 16

Variables

var IV = make([]byte, BlockSize)

Functions

func NewCipher

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

NewCipher creates and returns a new cipher.Block.

func SetIV

func SetIV(iv []byte) error

func Sm4CFB

func Sm4CFB(key []byte, in []byte, mode bool) (out []byte, err error)

密码反馈模式（Cipher FeedBack (CFB)） https://blog.csdn.net/zy_strive_2012/article/details/102520356 https://blog.csdn.net/sinat_23338865/article/details/72869841

func Sm4Cbc

func Sm4Cbc(key []byte, in []byte, mode bool) (out []byte, err error)

use Sm4Encrypt and Sm4Decrypt functions instead, because the "iv" is changing when encrypting or decrypting
only Sm4Encrypt and Sm4Decrypt work the same as SM4-CBC-PKCS7Padding crypto written in Java

Deprecated

func Sm4Decrypt

func Sm4Decrypt(key, iv, cipherText []byte) ([]byte, error)

func Sm4Ecb

func Sm4Ecb(key []byte, in []byte, mode bool) (out []byte, err error)

func Sm4Encrypt

func Sm4Encrypt(key, iv, plainText []byte) ([]byte, error)

func Sm4OFB

func Sm4OFB(key []byte, in []byte, mode bool) (out []byte, err error)

输出反馈模式（Output feedback, OFB） https://blog.csdn.net/chengqiuming/article/details/82390910 https://blog.csdn.net/sinat_23338865/article/details/72869841

func WriteKeyToPem

func WriteKeyToPem(key SM4Key, pwd []byte) ([]byte, error)

WriteKeyToPem will convert SM4Key to PEM format data and return it.

func WriteKeyToPemFile

func WriteKeyToPemFile(FileName string, key SM4Key, pwd []byte) error

WriteKeyToPemFile will convert SM4Key to PEM format data, then write it into the input filename.

Types

type SM4Key

type SM4Key []byte

func ReadKeyFromPem

func ReadKeyFromPem(data []byte, pwd []byte) (SM4Key, error)

ReadKeyFromPem will return SM4Key from PEM format data.

func ReadKeyFromPemFile

func ReadKeyFromPemFile(FileName string, pwd []byte) (SM4Key, error)

ReadKeyFromPemFile will return SM4Key from filename that saved PEM format data.

type Sm4Cipher

type Sm4Cipher struct {
	// contains filtered or unexported fields
}

Cipher is an instance of SM4 encryption.

func (*Sm4Cipher) BlockSize

func (c *Sm4Cipher) BlockSize() int

func (*Sm4Cipher) Decrypt

func (c *Sm4Cipher) Decrypt(dst, src []byte)

func (*Sm4Cipher) Encrypt

func (c *Sm4Cipher) Encrypt(dst, src []byte)