增加SM2加解密，增加jwt

ecb.go

@@ -0,0 +1,101 @@
+package crypter
+
+import (
+	"encoding/base64"
+	"errors"
+
+	"crypto/des"
+	"encoding/hex"
+)
+
+// ECB模式加密，返回16进制结果
+func TripleECBEncryptForHex(key, plaintext string) (string, error) {
+
+	keyBytes, err := base64.StdEncoding.DecodeString(key)
+
+	if err != nil {
+		return "", err
+	}
+
+	data := []byte(plaintext)
+	ciphertext, err := TripleECBEncrypt(keyBytes, data)
+	if err != nil {
+		return "", err
+	}
+	return hex.EncodeToString(ciphertext), nil
+}
+
+// ECB模式解密16进制密文
+func TripleECBDecryptFromHex(key, plaintext string) (string, error) {
+
+	keyBytes, err := base64.StdEncoding.DecodeString(key)
+
+	if err != nil {
+		return "", err
+	}
+
+	data, err := hex.DecodeString(plaintext)
+	if err != nil {
+		return "", err
+	}
+
+	ciphertext, err := TripleECBDecrypt(keyBytes, data)
+	if err != nil {
+		return "", err
+	}
+	return string(ciphertext), nil
+}
+
+// ECB模式加密，返回byte
+func TripleECBEncrypt(key, plaintext []byte) ([]byte, error) {
+
+	// 创建Triple DES的块加密器
+	block, err := des.NewTripleDESCipher(key)
+	if err != nil {
+		return []byte(""), err
+	}
+
+	// 创建切片来存储加密后的密文
+	ciphertext := make([]byte, len(plaintext))
+
+	// 复制明文到切片中
+	copy(ciphertext, plaintext)
+
+	// 应用PKCS#7填充
+	ciphertext = PKCS5Padding(ciphertext, block.BlockSize())
+
+	// 使用ECB模式加密填充后的数据
+	for i := 0; i < len(ciphertext); i += block.BlockSize() {
+		block.Encrypt(ciphertext[i:i+block.BlockSize()], ciphertext[i:i+block.BlockSize()])
+	}
+
+	return ciphertext, nil
+
+}
+
+// ECB模式解密，返回byte
+func TripleECBDecrypt(key, ciphertext []byte) ([]byte, error) {
+	// 创建Triple DES的块加密器（解密时也需要这个）
+	block, err := des.NewTripleDESCipher(key)
+	if err != nil {
+		return []byte(""), err
+	}
+
+	// 检查密文长度是否是8字节的倍数
+	if len(ciphertext)%des.BlockSize != 0 {
+		return []byte(""), errors.New("ciphertext is not a multiple of the block size")
+	}
+
+	// 创建一个buffer来存储解密后的明文
+	plaintext := make([]byte, len(ciphertext))
+
+	// 使用ECB模式解密
+	for i := 0; i < len(ciphertext); i += block.BlockSize() {
+		block.Decrypt(plaintext[i:i+block.BlockSize()], ciphertext[i:i+block.BlockSize()])
+	}
+	plaintext = PKCS5UnPadding(plaintext)
+
+	// 打印解密后的明文
+
+	return plaintext, nil
+}

ecb_test.go

@@ -0,0 +1,25 @@
+package crypter
+
+import (
+	"testing"
+)
+
+func Test_TripleECBEncrypt(t *testing.T) {
+	key := "7ejGP1WiZkgZ8VaIf6vBOBDFUnmByZiO" // 24字节的密钥
+	data := "这是测试 This is test!="             // 明文
+
+	d, err := TripleECBEncryptForHex(key, data)
+	t.Log(d)
+	t.Log(err)
+}
+
+func Test_TripleECBDecryptFromHex(t *testing.T) {
+	key := "7ejGP1WiZkgZ8VaIf6vBOBDFUnmByZiO" // 24字节的密钥
+	key = "99ef199ddd11ff93d6927f755fd2b108"
+	msg := "0a7d96e2459dfa37cd13b8611acb26dd9adf31016bdb93da0d25d6a8041005e6"
+	msg = "AD2A27C86D0E6C0499BEEFDD60675129"
+
+	data, err := TripleECBDecryptFromHex(key, msg)
+	t.Log(data)
+	t.Log(err)
+}

go.mod

@@ -0,0 +1,9 @@
+module git.tetele.net/tgo/crypter
+
+go 1.14
+
+require (
+	github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect
+	github.com/tjfoc/gmsm v1.4.1 // indirect
+	golang.org/x/crypto v0.18.0 // indirect
+)

go.sum

@@ -0,0 +1,107 @@
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+google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
+google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
+google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
+google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

jwt.go

@@ -0,0 +1,128 @@
+package crypter
+
+import (
+	"errors"
+	"fmt"
+	"log"
+
+	"strconv"
+	"time"
+
+	"github.com/dgrijalva/jwt-go"
+)
+
+//JWT = JSON WEB TOKEN 是一个开放标准，用于作为json对象，在各个地方安全的传输信息
+//此信息可以被验证和信任
+
+func CreateJwtToken(client_id, client_secret string) (string, error) {
+	// Define the secret key used for signing the token
+	secretKey := []byte(client_secret)
+
+	// Create a new token with claims
+	token := jwt.New(jwt.SigningMethodHS256)
+	claims := token.Claims.(jwt.MapClaims)
+
+	// Set the issuer, issued at, and JWT ID claims
+	claims["iss"] = client_id
+	claims["iat"] = time.Now().Unix()
+	claims["jti"] = strconv.Itoa(time.Now().Nanosecond())
+
+	// log.Println(claims)
+	// Sign the token with the secret key
+	tokenString, err := token.SignedString(secretKey)
+	if err != nil {
+		log.Println("Error signing token:", err)
+		return "", err
+	}
+	return tokenString, nil
+}
+func VerifyToken(tokenString string, client_id, client_secret string, expire int64) (bool, error) {
+
+	token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
+		return []byte(client_secret), nil
+	})
+	// log.Println(token, token.Claims, err)
+	if token.Valid {
+		claims := token.Claims.(jwt.MapClaims)
+
+		if client_id != claims["iss"] {
+			return false, errors.New("invalid client_id")
+		}
+		iat := ToInt64(claims["iat"])
+		now := time.Now().Unix()
+		log.Println(iat, now)
+		if now-iat > expire || iat-now > expire {
+			return false, errors.New("invalid time")
+		}
+
+		return true, nil
+	} else if ve, ok := err.(*jwt.ValidationError); ok {
+		if ve.Errors&jwt.ValidationErrorMalformed != 0 {
+			return false, errors.New("Malformed token")
+		} else if ve.Errors&(jwt.ValidationErrorExpired|jwt.ValidationErrorNotValidYet) != 0 {
+			return false, errors.New("Expired token")
+		} else {
+			return false, errors.New("Invalid token")
+		}
+	} else {
+		return false, errors.New("Invalid token")
+	}
+}
+
+func CheckJwtToken(tokenString string, client_secret string) (jwt.MapClaims, bool, error) {
+	// Define the secret key used for verifying the token
+	secretKey := []byte(client_secret)
+	// jwt.DecodeSegment()
+	// Parse the token
+	token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
+		// Check the signing method
+		if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
+			return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
+		}
+		return secretKey, nil
+	})
+
+	// Verify the token
+	if err != nil {
+		log.Println("Error parsing token:", err)
+		return nil, false, err
+	}
+
+	if token.Valid {
+		// log.Println("Token is valid!")
+		// Access the claims
+		claims := token.Claims.(jwt.MapClaims)
+		// log.Println("Issuer:", claims["iss"])
+		// log.Println("Issued At:", claims["iat"])
+		// log.Println("JWT ID:", claims["jti"])
+
+		return claims, true, nil
+	}
+	return nil, false, nil
+}
+
+func ToInt64(inter interface{}) int64 {
+	var value int64
+
+	switch inter.(type) {
+
+	case string:
+		value, _ = strconv.ParseInt(inter.(string), 10, 64)
+	case int:
+		value = int64(inter.(int))
+	case int64:
+		value = inter.(int64)
+	case float64:
+		value_int, _ := strconv.Atoi(fmt.Sprintf("%1.0f", inter))
+		value = int64(value_int)
+	case nil:
+		value = 0
+	case interface{}:
+		if _, ok := inter.(int64); !ok {
+			value = inter.(int64)
+		}
+	default:
+		log.Println("参数值类型错误", inter, "not in string|int|float64|interface|int64")
+	}
+	return value
+}

jwt_test.go

@@ -0,0 +1,15 @@
+package crypter
+
+import (
+	"testing"
+)
+
+func Test_VerifyToken(t *testing.T) {
+	token := "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiI5NzRjNzM1NjFhZTU0MjczIiwiaWF0IjoxNzExNzA1MTgwLCJqdGkiOiI3YzUzNGEyNi1jOTVmLTQ3NmQtYThjYS1lY2FjYTMxN2I1NDQifQ.h9JOqQOPN-xzTD7X5YPlS6YyshcixV329lEo_sX8tGw"
+	secret := "0f82962e24be4274a3b852f2d5b26f7e"
+	client_id := "974c73561ae54273"
+	ret, err := VerifyToken(token, client_id, secret, 600)
+
+	t.Log(ret)
+	t.Log(err)
+}

md5.go

@@ -28,7 +28,7 @@ func Md5Str(str ...string) string {
 
 	var build strings.Builder
 	if len(str) > 0 {
-		for _, v := range rand {
+		for _, v := range str {
 			build.WriteString(v)
 		}
 	} else {

rsa.go

@@ -0,0 +1,138 @@
+package crypter
+
+import (
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/base64"
+	"encoding/pem"
+	"errors"
+	"log"
+	"os"
+)
+
+func RSA_Decode(encryptedData string, privateKey string) (string, error) {
+
+	// 解码PEM格式的私钥
+	block, _ := pem.Decode([]byte(privateKey))
+	if block == nil {
+		// fmt.Println("Failed to decode PEM private key")
+		return "", errors.New("私钥解码失败")
+	}
+
+	// 解析RSA私钥
+	privKey, err := x509.ParsePKCS1PrivateKey(block.Bytes)
+	if err != nil {
+		log.Println("Failed to parse RSA private key", err)
+		return "", errors.New("私钥解析失败")
+	}
+
+	// 解密Base64编码的数据
+	encryptedBytes, _ := base64.StdEncoding.DecodeString(encryptedData)
+
+	// 使用RSA私钥进行解密
+	decryptedBytes, err := rsa.DecryptPKCS1v15(rand.Reader, privKey, encryptedBytes)
+	if err != nil {
+		// fmt.Println("Failed to decrypt data")
+		return "", errors.New("解密失败")
+	}
+
+	// 将解密后的字节转换为字符串
+	return string(decryptedBytes), nil
+}
+
+func RSA_Encode(public_key string, msg string) (string, error) {
+
+	// publicKeyFile, err := ioutil.ReadFile(public_key)
+	// if err != nil {
+	// 	log.Println("Failed to read public key file:", err)
+	// 	return "", errors.New("没有公钥")
+	// }
+
+	block, _ := pem.Decode([]byte(public_key))
+	if block == nil {
+		log.Println("Failed to decode public key PEM.")
+		return "", errors.New("公钥解码失败")
+	}
+
+	publicKey, err := x509.ParsePKIXPublicKey(block.Bytes)
+	if err != nil {
+		log.Println("Failed to parse public key:", err)
+		return "", errors.New("公钥解析失败")
+	}
+
+	rsaPublicKey, ok := publicKey.(*rsa.PublicKey)
+	if !ok {
+		log.Println("Failed to get RSA public key.")
+		return "", errors.New("公钥错误")
+	}
+
+	plainText := []byte(msg)
+
+	cipherText, err := rsa.EncryptPKCS1v15(rand.Reader, rsaPublicKey, plainText)
+	if err != nil {
+		log.Println("Failed to encrypt data:", err)
+		return "", errors.New("加密失败")
+	}
+
+	return string(cipherText), nil
+}
+func Create(private_pem_file, public_pem_file string) {
+	// 生成 RSA 密钥对
+	privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		log.Println("无法生成私钥：", err)
+		return
+	}
+
+	// 将私钥保存到文件
+	privateKeyFile, err := os.Create(private_pem_file)
+	if err != nil {
+		log.Println("无法创建私钥文件：", err)
+		return
+	}
+	defer privateKeyFile.Close()
+
+	privateKeyBlock := &pem.Block{
+		Type:  "RSA PRIVATE KEY",
+		Bytes: x509.MarshalPKCS1PrivateKey(privateKey),
+	}
+
+	err = pem.Encode(privateKeyFile, privateKeyBlock)
+	if err != nil {
+		log.Println("无法写入私钥文件：", err)
+		return
+	}
+
+	log.Println("私钥已保存到", private_pem_file)
+
+	// 生成公钥
+	publicKey := &privateKey.PublicKey
+
+	// 将公钥保存到文件
+	publicKeyFile, err := os.Create(public_pem_file)
+	if err != nil {
+		log.Println("无法创建公钥文件：", err)
+		return
+	}
+	defer publicKeyFile.Close()
+
+	publicKeyBytes, err := x509.MarshalPKIXPublicKey(publicKey)
+	if err != nil {
+		log.Println("无法编码公钥：", err)
+		return
+	}
+
+	publicKeyBlock := &pem.Block{
+		Type:  "PUBLIC KEY",
+		Bytes: publicKeyBytes,
+	}
+
+	err = pem.Encode(publicKeyFile, publicKeyBlock)
+	if err != nil {
+		log.Println("无法写入公钥文件：", err)
+		return
+	}
+
+	log.Println("公钥已保存到", public_pem_file)
+}

rsa_test.go

@@ -0,0 +1,101 @@
+package crypter
+
+import (
+	"encoding/base64"
+	"testing"
+)
+
+// func Test_RSA(t *testing.T) {
+// 	// 加密后的数据
+// 	encryptedData := "Zc8v6j8vzOQw4Ea9gA+gUgZr3I0AqjzH2aTf5wvJWtYF6HtQKzg2ZQgB9fQ6M2K1YW3J8Zr+I0w/3Y8uxR7e3bL7hYqT4A+1q8TJ6Dw0Ry1HlJ7iIgO1Zk5opxY2f9gBckmZj5yF3Z5F8IaLQXkWt9rH0c3s4tqCzUvq2Tj9v+1Sd7q8="
+// 	// RSA私钥
+// 	privateKey := `-----BEGIN RSA PRIVATE KEY-----
+// MIICXQIBAAKBgQDlTj22J4wIEvJX9sWv6Z5iG0J/1HfD7Oe2Ry5AZfU9ZTzQ9uOJ
+// dCt6M2xh9qyf5jJHnU7XKvH8WJN1wYr5X6zCqEVfA3n2i9U7jUwZ1CZtY0L6glNq
+// sUxjWbsZoJg8l5nr7+D1U2Y0EoJf3z2w6h2H8Cd8d4j6s3wRlZ8m4uX6cwIDAQAB
+// AoGBANZ4qM8Za7z1i2rH0t1a4XXg6b7y3nHyk3KvU8u7Qn8ZyFvW7C9+eIhYh5x7
+// iY9jXjA8eCjBxqVW3+4OjyA2F8H1sN3zq5sJ5XWV+8oZV0vNSm4fTfZcRf+o3R1i
+// lNSGzY/7N1oDwWq7OQoqs3X6f0Tq7l3xU4DilK8C6e9a4G7KpXHvD9Nq2YqTlHlZ
+// 2dGc2QaL6r8UfAiEA3Q5wQZaTfzR8l4R5o3l5pKkE+UQ3kqgX4yX7Cw8CQQD8Qq6
+// sVbYH3w9hQ1vXj4S0UkY4tZsVn3KjHb9EiGQ8o3T9WlKqX6k6cYs8r3F4Vn6wK32
+// aEk5eF7bAkEA6tWpYh2g3nWgWUJ8b5KdA1wLxR2JzrK4Z8LXZ8J+7R3k9TnT1D1r
+// 5vqz7L5XqK7ZtT5KuYm8Hq8bq7AqzYcQMQJANrOq9GgM7QZzYwE+LsP4kL0WgJt6
+// E5yW2h5KmK4YUZq7J8vnLxqJwR1H5rNjQ6XK5Bb5G6tMj3q1jK5FzZG7MQJAbH4I
+// yCJ6L/rz6GYz6Sxw0J3q0K6sWJdCvC3tXxTl6tDhI1C3rRgL2pV1Kxu6l3tT1Q3o
+// AM4B5wJwJzJtL8x5rQJBAIq2j9NpLX9j6tB+1lKuZUw+5UW7Lh4GgYyFZGQw7zTm
+// GrLl0Y+7K7uLd7uS9J2fOgXJz8n4X9B1CBs37f8d6Nw=
+// -----END RSA PRIVATE KEY-----`
+
+// 	ret, err := RSA(encryptedData, privateKey)
+// 	t.Log(ret)
+// 	t.Log(err)
+// }
+
+// func Test_Create(t *testing.T) {
+// 	private_file := `D:\go\go-tmp\private.pem`
+// 	public_file := `D:\go\go-tmp\public.pem`
+// 	Create(private_file, public_file)
+// }
+
+func Test_RSA_Encode(t *testing.T) {
+	// 	public_key := `-----BEGIN PUBLIC KEY-----
+	// MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArFP+5/AgprF3qHOgiJyI
+	// 798Yul7Ou2mlEBllv97cIIw0763O3BISc5+1io77q18qxEMAQEUwJeDR2GXKsGqY
+	// xS/YRxtCsHHs/y7bCLq/bFLGZGe7/tR5NQ54RjG8hGnRCGVqZVc8VItOofeldAO1
+	// tZQw+iQUNtMPGuvRvo44xWqp/f5gI3T1BxwZjwepDS2ULO/pAIhhPKHGOWYS/DjR
+	// Zu6SmO+YKxqUQRLGd1+u1bBjh5ZQARvJkJVL3zXHJ4nTvKWpOTqSIUTprMZ/pGxu
+	// /79mukI/qxJ5py0UhMkkPuVUgIX6JhTWsSEmKTedlu9TWDdIhAsOzLmA0Nd9WR9W
+	// nQIDAQAB
+	// -----END PUBLIC KEY-----`
+
+	// 	ret, err := RSA_Encode(public_key, "ccc")
+	// 	t.Log(ret)
+	// 	t.Log(err)
+
+	// 	private_key := `-----BEGIN RSA PRIVATE KEY-----
+	// MIIEogIBAAKCAQEArFP+5/AgprF3qHOgiJyI798Yul7Ou2mlEBllv97cIIw0763O
+	// 3BISc5+1io77q18qxEMAQEUwJeDR2GXKsGqYxS/YRxtCsHHs/y7bCLq/bFLGZGe7
+	// /tR5NQ54RjG8hGnRCGVqZVc8VItOofeldAO1tZQw+iQUNtMPGuvRvo44xWqp/f5g
+	// I3T1BxwZjwepDS2ULO/pAIhhPKHGOWYS/DjRZu6SmO+YKxqUQRLGd1+u1bBjh5ZQ
+	// ARvJkJVL3zXHJ4nTvKWpOTqSIUTprMZ/pGxu/79mukI/qxJ5py0UhMkkPuVUgIX6
+	// JhTWsSEmKTedlu9TWDdIhAsOzLmA0Nd9WR9WnQIDAQABAoIBAA3GnS7/ZCzPLQib
+	// Ta7+DHhYdkqXv6D9vgM+dILVFvXHH4g1db7j9vOlRcbwzS+S6QFNddytaz7r7PqG
+	// kKBvtQy2WWy9wiQGx3JS1ZGqFBlduJxYKpAhfhr+sCC0YySWrO4l5U56nckIZd3O
+	// xTwz+7erRAsLDU6gqql1RowcJG+riJyEG3K8Dx42FiOtsL3n9vMoStArKQglhvc6
+	// aDvri+Q/AldWjcKShvVhoJ45l10HkIpet/vANwNMC27zJTWMB/ssYHeTkRmDTrwZ
+	// X0X/6AFv/gfnelHpQUp3B2n+DlAOHKURsP2ithN44CrwXg+iz9fVv8VLLz/pb2Tm
+	// vFfOBGUCgYEA0ZT1Td0ekWQLeBMnuMmEMjlMKJ5Rxk7p//V3zl8izQOhagjZ3mZO
+	// eo/bkKAJbPu3CCaPA7PyDegy4QV34MR2DVrKRmRJ02xIWVsgHG/OVxHXR+oqYGdS
+	// yEYPYWr8SoZFwljt1a+N/teUOr63/UP6XL870QkIOCGLruLRuITEpoMCgYEA0n7L
+	// NgCVVWd9Sa+t4YbpyvSB49YrZ80yIAp/OcxyO7ZgI1FAIpOTr143KVbQSp3f3uzE
+	// iDwmB+jubT7DzgTOaSOin5KIPXUA2gkISxjnGLHBQBgxLEF5EvmbF16Hf0SZSDbS
+	// 01URusQ/fL9Zgxpg1QuKRHbPmiuDEsGZOrZuhF8CgYAg8rkJz6xhkQfYjbJd85hL
+	// yQQ3EoSql3dkHPQDxqMS9fInWFLgCtdlnz4WY4J31q60olMzctOn6gwtog1xkZE5
+	// kj9gh52vlkNdgNzwe4dF2vEsRhz5YOT7xT/fwdD96lQHNLHXOS0qljugbKFCOLCg
+	// ahP+Tdwz7tol2VS9HGpJ/wKBgCUZofl3qtptriBxrWUFoWlbJRWiJu5ZtU7+aqQm
+	// S7AImfM/m908Q5hyM6i+m2G7Z7zj4FPevhlAzd1FZb+HC1ZuqHgVnJuwZqEHXIXX
+	// 8stgcR455VjWhV95zQMWby1YSuf2ebwzzzcq5cG3/C/mU1DZgtpEUpzqtGR26On3
+	// Q41jAoGARkOpDEG4/Wm9k2No5GJDQ40kSwCAenjIJrz6Pk7FFaNjXePKMh2Keg7a
+	// N79uybBCD0yqJdFblR8DHpaIOIfz6lUHK8REycToo5X7WrOO2/zAUYa0v+Zaa+TK
+	// 298fm5UWMBWtwGj6gFnvwemdN5r01UqtkbNagNGxCjtZp6KSQCI=
+	// -----END RSA PRIVATE KEY-----`
+
+	// 	ret2, err := RSA_Decode(ret, private_key)
+
+	// t.Log(ret2)
+	// t.Log(err)
+	encodedStr := "MTIzNDU3ODlAJGVydDU="
+
+	// 解码Base64字符串
+	decodedBytes, err := base64.StdEncoding.DecodeString(encodedStr)
+	if err != nil {
+		t.Log("解码失败：", err)
+		return
+	}
+
+	// 将解码后的字节数组转换为字符串
+	decodedStr := string(decodedBytes)
+
+	// 打印解密后的字符串
+	t.Log(decodedStr)
+}

sm2.go

@@ -0,0 +1,82 @@
+package crypter
+
+import (
+	"encoding/hex"
+	"errors"
+	"log"
+	"strings"
+
+	"crypto/rand"
+
+	"fmt"
+
+	"github.com/tjfoc/gmsm/sm2"
+	"github.com/tjfoc/gmsm/x509"
+)
+
+func Sm2EncryptWithHexKey(message string, public_key string) (string, error) {
+
+	sm2PubKey, err := x509.ReadPublicKeyFromHex(public_key)
+	if err != nil {
+		fmt.Println("Error parsing SM2 public key:", err)
+		return "", err
+	}
+
+	// 待加密的数据
+	data := []byte(message)
+
+	// 使用SM2公钥加密数据
+	ciphertext, err := sm2.Encrypt(sm2PubKey, data, rand.Reader, sm2.C1C3C2)
+	if err != nil {
+		log.Println("Error encrypting data with SM2:", err)
+		return "", errors.New("Error encrypting data with SM2," + err.Error())
+	}
+
+	if err != nil {
+		log.Println("Error encrypting data with SM2:", err)
+		return "", errors.New("Error encrypting data with SM2")
+	}
+
+	return hex.EncodeToString(ciphertext), nil
+	// return base64.StdEncoding.EncodeToString(ciphertext), nil
+
+}
+
+func Sm2DecryptWithHexKey(message string, private_key string) (string, error) {
+
+	sm2PriKey, err := x509.ReadPrivateKeyFromHex(private_key)
+	if err != nil {
+		fmt.Println("Error parsing SM2 private key:", err)
+		return "", err
+	}
+	// 待加密的数据
+	data, err := hex.DecodeString(message) //base64.StdEncoding.DecodeString(message) //
+	if err != nil {
+		fmt.Println("Error base64 message:", err)
+		return "", err
+	}
+
+	// 使用SM2私钥加密数据
+	ciphertext, err := sm2.Decrypt(sm2PriKey, data, sm2.C1C3C2)
+	if err != nil {
+		log.Println("Error decrypting data with SM2:", err)
+		return "", errors.New("Error encrypting data with SM2:" + err.Error())
+	}
+
+	return string(ciphertext), nil
+
+}
+
+func CreateHexKey() (string, string, error) {
+	// 生成SM2密钥对
+	priv, err := sm2.GenerateKey(rand.Reader)
+	if err != nil {
+		return "", "", err
+	}
+	// 将私钥转换为PEM格式的字符串
+	privPem := x509.WritePrivateKeyToHex(priv)
+
+	pubPem := x509.WritePublicKeyToHex(priv.Public().(*sm2.PublicKey))
+
+	return strings.ToUpper(privPem), strings.ToUpper(pubPem), err
+}

sm2_test.go

@@ -0,0 +1,38 @@
+package crypter
+
+import (
+	"testing"
+)
+
+func Test_Sm2EncryptWithHexKey(t *testing.T) {
+	publicKeyStr := "MFkwEwYHKoZIzj0CAQYIKoEcz1UBgi0DQgAEW8Jjr6PAAbt4CNLwy96IAFYqYzTYNXmFRP5WQIQHlVOyKwGt4mWvOp3cYIYLNPz4Zul+ssHGj6iIR5/g7/GPVQ=="
+	message := "Hello, SM2!"
+	// ret, err := Sm2Encrypt(message, publicKeyStr)
+	// //BB06ddYi5lZ375jb1SWVZz7TrohrDS2XBDxgbMSgK4/oltdKt7tZZ917uZ1BInmrjDhuYpgCXZ9Pm7MACv8jKBT2BeRYEa2bEoh5s9iu0pLkiEbCxEd0+rSQ7QzOTXjOuUMfv05abYImjg==
+	// t.Log(ret)
+	// t.Log(err)
+	publicKeyStr = "042CC19B64E0BD66F39636FD088CDB95B94FC0D6E8F859D6A3CE667EBEF27BAF0DC56EA45C8F48A9C820DB00D84445CF408A533986C2A26AF2A92C22C784A6F63E"
+	ret, err := Sm2EncryptWithHexKey(message, publicKeyStr)
+	t.Log(ret)
+	t.Log(err)
+
+}
+
+func Test_Sm2DecryptWithHexKey(t *testing.T) {
+	var private_key string = "MIGTAgEAMBMGByqGSM49AgEGCCqBHM9VAYItBHkwdwIBAQQgeCC1xjOtVEUPXf/sHWGamWnpV2GCJcFXDMNdjHoFXYegCgYIKoEcz1UBgi2hRANCAARbwmOvo8ABu3gI0vDL3ogAVipjNNg1eYVE/lZAhAeVU7IrAa3iZa86ndxghgs0/Phm6X6ywcaPqIhHn+Dv8Y9V"
+
+	// message := "BNw3kw95aBovbvkJQ5NgIQnfDP1xJwGHUii4LWTjmrxzE7zlXkh0Py8+K8XuMFnqJn+9n5VheFyCAwOPg1Iw4yB4CDyBW5hGOXDlXV0qe+iaSdRCFJYoz810HStXKKwRjHA1+L5FXHIU+Q=="
+	message := "04b45733bf34c3e11a52027e8f477ce107e3c5ce18e678583b849a05ac98d3bf50997e36539edf9e959a2b2aa3813037ce06da99fc13c5fc60741fce0a056af65abcfc0a3b1fc0969dcb29c8d609076a118fa72c8704f02c47faae45a5eea9dfa99e4e0a83a4954aa2eee089"
+
+	private_key = "4B906B75EB9979A1F2AB00AFC192F2E574451871A003D46B328F88D3EF487836"
+	ret, err := Sm2DecryptWithHexKey(message, private_key)
+	t.Log(ret)
+	t.Log(err)
+}
+
+func Test_CreateHexKey(t *testing.T) {
+	priv, pub, err := CreateHexKey()
+	t.Log(priv)
+	t.Log(pub)
+	t.Log(err)
+}