GSSM加解密

1、sm2

package crypto

import (
	"crypto/rand"

	"github.com/emmansun/gmsm/sm2"
)

func Sm2Decrypt(priKey, cipherText []byte) (plainText []byte, err error) {
	var pK *sm2.PrivateKey
	if pK, err = sm2.NewPrivateKey(priKey); err != nil {
		return
	}
	return sm2.Decrypt(pK, cipherText)
}

func Sm2Encrypt(priKey, plainText []byte) (cipherText []byte, err error) {
	var pK *sm2.PrivateKey
	if pK, err = sm2.NewPrivateKey(priKey); err != nil {
		return
	}
	return sm2.Encrypt(rand.Reader, &pK.PublicKey, plainText, nil)
}

　　

2、sm4 ecb

package crypto

import (
	"github.com/emmansun/gmsm/cipher"
	"github.com/emmansun/gmsm/padding"
	"github.com/emmansun/gmsm/sm4"
)

func Sm4ECBDecrypt(key, data []byte) ([]byte, error) {
	c, err := sm4.NewCipher(key)
	if err != nil {
		return nil, err
	}
	pkcs7 := padding.NewPKCS7Padding(sm4.BlockSize)
	plaintext := make([]byte, len(data))
	decrypter := cipher.NewECBDecrypter(c)
	decrypter.CryptBlocks(plaintext, data)
	return pkcs7.Unpad(plaintext)
}

func Sm4ECBEncrypt(key, data []byte) ([]byte, error) {
	c, err := sm4.NewCipher(key)
	if err != nil {
		return nil, err
	}
	pkcs7 := padding.NewPKCS7Padding(sm4.BlockSize)
	ciphertext := pkcs7.Pad(data)
	encrypter := cipher.NewECBEncrypter(c)
	encrypter.CryptBlocks(ciphertext, data)
	return ciphertext, nil
}

　　

 

参考：gmsm/cipher/ecb_sm4_test.go at main · emmansun/gmsm (github.com)