diff --git a/xy_sh/generate.md b/xy_sh/generate.md new file mode 100644 index 0000000..209d09f --- /dev/null +++ b/xy_sh/generate.md @@ -0,0 +1,1717 @@ +好的,现在我已经获取了所有加密工具的实现代码。让我开始生成完整的服务端代码。 + +根据文档分析: +1. **SM4-ECB**:用于加密/解密业务数据(文档没有提到IV,示例数据无IV前缀) +2. **SM3带盐哈希**:用于生成签名(`sm3WithSalt`) +3. 所有接口使用 `timestamp` + `sign` 请求头,`encryptedData` 请求体 + +现在开始生成所有文件: + +// File: xy_sh/go.mod +```go +module xy_sh + +go 1.26 + +require ( + github.com/gofiber/fiber/v2 v2.52.6 + github.com/tjfoc/gmsm v1.4.1 +) +``` + +// File: xy_sh/cmd/server/main.go +```go +package main + +import ( + "log" + "xy_sh/internal/config" + "xy_sh/internal/router" +) + +func main() { + cfg := config.LoadConfig() + + app := router.SetupRouter(cfg) + + log.Printf("服务启动,监听端口: %s", cfg.ServerPort) + if err := app.Listen(":" + cfg.ServerPort); err != nil { + log.Fatalf("服务启动失败: %v", err) + } +} +``` + +// File: xy_sh/internal/config/config.go +```go +package config + +import "os" + +type Config struct { + ServerPort string + SM3Salt string + SM4Key []byte +} + +func LoadConfig() *Config { + port := os.Getenv("SERVER_PORT") + if port == "" { + port = "8080" + } + + sm3Salt := os.Getenv("SM3_SALT") + if sm3Salt == "" { + sm3Salt = "default_sm3_salt" + } + + sm4KeyStr := os.Getenv("SM4_KEY") + var sm4Key []byte + if sm4KeyStr != "" { + sm4Key = []byte(sm4KeyStr) + } else { + sm4Key = []byte("1234567890123456") // 16字节默认密钥 + } + + return &Config{ + ServerPort: port, + SM3Salt: sm3Salt, + SM4Key: sm4Key, + } +} +``` + +// File: xy_sh/internal/entities/request.go +```go +package entities + +// OrderRequest 卡券/直充权益下单接口请求业务参数 +type OrderRequest struct { + ActCode string `json:"actCode"` // 活动code + GoodsCode string `json:"goodsCode"` // 供应商商品编号 + ActOrderNum string `json:"actOrderNum"` // 活动方订单号 + Account string `json:"account,omitempty"` // 充值账号 + CallbackUrl string `json:"callbackUrl,omitempty"` // 回调地址 +} + +// QueryRequest 订单查询接口请求业务参数 +type QueryRequest struct { + ActCode string `json:"actCode"` // 活动code + OrderNo string `json:"orderNo"` // 供应商订单号 +} + +// WechatRechargeRequest 微信立减金订单充值接口请求业务参数 +type WechatRechargeRequest struct { + ActCode string `json:"actCode"` // 活动code + OrderNo string `json:"orderNo"` // 供应商订单号 + GoodsCode string `json:"goodsCode"` // 供应商商品编号 + ActOrderNum string `json:"actOrderNum"` // 活动方订单号 + AppId string `json:"appId"` // 公众账号ID + OpenId string `json:"openId"` // 微信用户标识 + CallbackUrl string `json:"callbackUrl,omitempty"` // 回调地址 +} + +// CallbackRequest 充值结果通知接口回调业务参数 +type CallbackRequest struct { + OrderNo string `json:"orderNo"` // 供应商订单号 + ActOrderNum string `json:"actOrderNum"` // 活动方订单号 + Status int `json:"status"` // 订单状态 + Account string `json:"account,omitempty"` // 直充账号 + CardInfo *CardInfo `json:"cardInfo,omitempty"` // 卡券信息 + CouponId string `json:"couponId,omitempty"` // 微信优惠id +} + +// CardInfo 卡券信息 +type CardInfo struct { + CouponNo string `json:"couponNo"` // 卡号/短链 + CouponCode string `json:"couponCode"` // 卡密 + ExpireTime string `json:"expireTime"` // 过期时间 +} + +// EncryptedRequest 加密请求体 +type EncryptedRequest struct { + EncryptedData string `json:"encryptedData"` // SM4加密后的业务数据 +} +``` + +// File: xy_sh/internal/entities/response.go +```go +package entities + +// ApiResponse 通用API响应 +type ApiResponse struct { + Code int `json:"code"` // 返回状态编码,0成功 -1失败 + Msg string `json:"msg"` // 返回错误信息 + Data interface{} `json:"data"` // JSON格式业务数据进行SM4加密后的字符串 +} + +// OrderResponse 下单接口响应业务参数 +type OrderResponse struct { + OrderNo string `json:"orderNo"` // 权益订单号 + CouponNo string `json:"couponNo,omitempty"` // 卡号 + CouponCode string `json:"couponCode,omitempty"` // 卡密 + Status int `json:"status"` // 状态 + ExpireTime string `json:"expireTime,omitempty"` // 有效期 +} + +// QueryResponse 查询接口响应业务参数 +type QueryResponse struct { + OrderNo string `json:"orderNo"` // 权益订单号 + Status int `json:"status"` // 订单状态 + Account string `json:"account,omitempty"` // 充值账号 + CardInfo *CardInfo `json:"cardInfo,omitempty"` // 卡券信息 + CouponId string `json:"couponId,omitempty"` // 优惠id +} + +// WechatRechargeResponse 微信立减金充值响应业务参数 +type WechatRechargeResponse struct { + OrderNo string `json:"orderNo"` // 权益订单号 + Status int `json:"status"` // 订单状态 + CouponId string `json:"couponId,omitempty"` // 微信优惠id +} +``` + +// File: xy_sh/internal/middleware/middleware.go +```go +package middleware + +import ( + "encoding/json" + "strings" + + "github.com/gofiber/fiber/v2" + "xy_sh/internal/config" + "xy_sh/pkg/crypto" +) + +// VerifySign 验证签名中间件 +func VerifySign(cfg *config.Config) fiber.Handler { + return func(c *fiber.Ctx) error { + // 从请求头获取timestamp和sign + timestamp := c.Get("timestamp") + sign := c.Get("sign") + + if timestamp == "" || sign == "" { + return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{ + "code": -1, + "msg": "缺少timestamp或sign请求头", + }) + } + + // 获取请求体 + body := c.Body() + if len(body) == 0 { + return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{ + "code": -1, + "msg": "请求体不能为空", + }) + } + + // 解析请求体获取encryptedData + var req struct { + EncryptedData string `json:"encryptedData"` + } + if err := json.Unmarshal(body, &req); err != nil { + return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{ + "code": -1, + "msg": "请求体格式错误", + }) + } + + // 验证签名:SM3(salt + timestamp + encryptedData) + expectedSign := crypto.SM3WithSalt(timestamp+req.EncryptedData, cfg.SM3Salt) + if !strings.EqualFold(expectedSign, sign) { + return c.Status(fiber.StatusUnauthorized).JSON(fiber.Map{ + "code": -1, + "msg": "签名验证失败", + }) + } + + // 将解密后的业务参数存入上下文 + decrypted, err := crypto.SM4ECBDecrypt(req.EncryptedData, cfg.SM4Key) + if err != nil { + return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{ + "code": -1, + "msg": "解密失败: " + err.Error(), + }) + } + + c.Locals("decryptedBody", decrypted) + return c.Next() + } +} +``` + +// File: xy_sh/internal/biz/biz.go +```go +package biz + +import ( + "encoding/json" + "xy_sh/internal/config" + "xy_sh/internal/entities" + "xy_sh/pkg/crypto" +) + +// Biz 业务逻辑层 +type Biz struct { + cfg *config.Config +} + +// NewBiz 创建业务逻辑实例 +func NewBiz(cfg *config.Config) *Biz { + return &Biz{cfg: cfg} +} + +// EncryptResponse 加密响应数据 +func (b *Biz) EncryptResponse(data interface{}) (string, error) { + jsonBytes, err := json.Marshal(data) + if err != nil { + return "", err + } + return crypto.SM4ECBEncrypt(jsonBytes, b.cfg.SM4Key) +} + +// DecryptRequest 解密请求数据 +func (b *Biz) DecryptRequest(encryptedData string) ([]byte, error) { + return crypto.SM4ECBDecrypt(encryptedData, b.cfg.SM4Key) +} + +// ProcessOrder 处理下单请求 +func (b *Biz) ProcessOrder(req *entities.OrderRequest) (*entities.OrderResponse, error) { + // TODO: 实现下单业务逻辑 + // 1. 校验参数 + // 2. 调用供应商接口或处理业务 + // 3. 返回结果 + + return &entities.OrderResponse{ + OrderNo: "HM" + generateOrderNo(), + Status: 0, + ExpireTime: "2025-12-31 23:59:59", + }, nil +} + +// ProcessQuery 处理订单查询请求 +func (b *Biz) ProcessQuery(req *entities.QueryRequest) (*entities.QueryResponse, error) { + // TODO: 实现订单查询业务逻辑 + return &entities.QueryResponse{ + OrderNo: req.OrderNo, + Status: 0, + }, nil +} + +// ProcessWechatRecharge 处理微信立减金充值请求 +func (b *Biz) ProcessWechatRecharge(req *entities.WechatRechargeRequest) (*entities.WechatRechargeResponse, error) { + // TODO: 实现微信立减金充值业务逻辑 + return &entities.WechatRechargeResponse{ + OrderNo: req.OrderNo, + Status: 0, + }, nil +} + +// ProcessCallback 处理回调通知 +func (b *Biz) ProcessCallback(req *entities.CallbackRequest) error { + // TODO: 实现回调通知处理逻辑 + // 1. 更新订单状态 + // 2. 处理卡券信息 + // 3. 处理微信优惠信息 + return nil +} + +// generateOrderNo 生成订单号(示例) +func generateOrderNo() string { + // TODO: 实现订单号生成逻辑 + return "0000000000000000" +} +``` + +// File: xy_sh/internal/service/service.go +```go +package service + +import ( + "encoding/json" + + "github.com/gofiber/fiber/v2" + "xy_sh/internal/biz" + "xy_sh/internal/config" + "xy_sh/internal/entities" +) + +// Service 服务层 +type Service struct { + biz *biz.Biz + cfg *config.Config +} + +// NewService 创建服务实例 +func NewService(cfg *config.Config) *Service { + return &Service{ + biz: biz.NewBiz(cfg), + cfg: cfg, + } +} + +// Order 卡券/直充权益下单接口 +func (s *Service) Order(c *fiber.Ctx) error { + decrypted := c.Locals("decryptedBody").([]byte) + + var req entities.OrderRequest + if err := json.Unmarshal(decrypted, &req); err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: "业务参数解析失败: " + err.Error(), + }) + } + + resp, err := s.biz.ProcessOrder(&req) + if err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: err.Error(), + }) + } + + encryptedData, err := s.biz.EncryptResponse(resp) + if err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: "响应加密失败: " + err.Error(), + }) + } + + return c.JSON(entities.ApiResponse{ + Code: 0, + Msg: "请求成功", + Data: encryptedData, + }) +} + +// Query 卡券/直充/微信立减金订单查询接口 +func (s *Service) Query(c *fiber.Ctx) error { + decrypted := c.Locals("decryptedBody").([]byte) + + var req entities.QueryRequest + if err := json.Unmarshal(decrypted, &req); err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: "业务参数解析失败: " + err.Error(), + }) + } + + resp, err := s.biz.ProcessQuery(&req) + if err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: err.Error(), + }) + } + + encryptedData, err := s.biz.EncryptResponse(resp) + if err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: "响应加密失败: " + err.Error(), + }) + } + + return c.JSON(entities.ApiResponse{ + Code: 0, + Msg: "请求成功", + Data: encryptedData, + }) +} + +// WechatRecharge 微信立减金订单充值接口 +func (s *Service) WechatRecharge(c *fiber.Ctx) error { + decrypted := c.Locals("decryptedBody").([]byte) + + var req entities.WechatRechargeRequest + if err := json.Unmarshal(decrypted, &req); err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: "业务参数解析失败: " + err.Error(), + }) + } + + resp, err := s.biz.ProcessWechatRecharge(&req) + if err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: err.Error(), + }) + } + + encryptedData, err := s.biz.EncryptResponse(resp) + if err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: "响应加密失败: " + err.Error(), + }) + } + + return c.JSON(entities.ApiResponse{ + Code: 0, + Msg: "请求成功", + Data: encryptedData, + }) +} + +// Callback 卡券/直充/微信立减金充值结果通知接口 +func (s *Service) Callback(c *fiber.Ctx) error { + decrypted := c.Locals("decryptedBody").([]byte) + + var req entities.CallbackRequest + if err := json.Unmarshal(decrypted, &req); err != nil { + return c.Status(fiber.StatusBadRequest).SendString("参数解析失败") + } + + if err := s.biz.ProcessCallback(&req); err != nil { + return c.Status(fiber.StatusInternalServerError).SendString(err.Error()) + } + + return c.SendString("ok") +} +``` + +// File: xy_sh/internal/router/router.go +```go +package router + +import ( + "github.com/gofiber/fiber/v2" + "xy_sh/internal/config" + "xy_sh/internal/middleware" + "xy_sh/internal/service" +) + +// SetupRouter 设置路由 +func SetupRouter(cfg *config.Config) *fiber.App { + app := fiber.New() + + svc := service.NewService(cfg) + + // 需要签名验证的路由组 + api := app.Group("/api", middleware.VerifySign(cfg)) + { + // 接口1:卡券/直充权益下单接口 + api.Post("/order", svc.Order) + + // 接口2:卡券/直充/微信立减金订单查询接口 + api.Post("/query", svc.Query) + + // 接口3:微信立减金订单充值接口 + api.Post("/wechat/recharge", svc.WechatRecharge) + + // 接口4:卡券/直充/微信立减金充值结果通知接口 + api.Post("/callback", svc.Callback) + } + + return app +} +``` + +// File: xy_sh/internal/test/example.go +```go +package test + +import ( + "bytes" + "encoding/json" + "fmt" + "io" + "net/http" + "time" + + "xy_sh/pkg/crypto" +) + +// 测试配置(请替换为实际值) +const ( + sm3Salt = "your_sm3_salt" + sm4Key = "1234567890123456" // 16字节密钥 +) + +// APIClient API客户端示例 +type APIClient struct { + BaseURL string + SM3Salt string + SM4Key []byte +} + +// NewAPIClient 创建API客户端 +func NewAPIClient(baseURL string) *APIClient { + return &APIClient{ + BaseURL: baseURL, + SM3Salt: sm3Salt, + SM4Key: []byte(sm4Key), + } +} + +// EncryptAndSign 加密业务数据并生成签名 +func (c *APIClient) EncryptAndSign(bizData interface{}) (timestamp string, encryptedData string, sign string, err error) { + // 序列化业务数据 + jsonBytes, err := json.Marshal(bizData) + if err != nil { + return "", "", "", fmt.Errorf("序列化失败: %v", err) + } + + // SM4加密 + encryptedData, err = crypto.SM4ECBEncrypt(jsonBytes, c.SM4Key) + if err != nil { + return "", "", "", fmt.Errorf("加密失败: %v", err) + } + + // 生成时间戳(毫秒级) + timestamp = fmt.Sprintf("%d", time.Now().UnixMilli()) + + // 生成签名:SM3(salt + timestamp + encryptedData) + sign = crypto.SM3WithSalt(timestamp+encryptedData, c.SM3Salt) + + return timestamp, encryptedData, sign, nil +} + +// SendRequest 发送请求 +func (c *APIClient) SendRequest(path string, bizData interface{}) (map[string]interface{}, error) { + timestamp, encryptedData, sign, err := c.EncryptAndSign(bizData) + if err != nil { + return nil, err + } + + // 构建请求体 + reqBody := map[string]string{ + "encryptedData": encryptedData, + } + reqBytes, _ := json.Marshal(reqBody) + + // 创建请求 + req, err := http.NewRequest("POST", c.BaseURL+path, bytes.NewReader(reqBytes)) + if err != nil { + return nil, fmt.Errorf("创建请求失败: %v", err) + } + + // 设置请求头 + req.Header.Set("Content-Type", "application/json") + req.Header.Set("timestamp", timestamp) + req.Header.Set("sign", sign) + + // 发送请求 + client := &http.Client{Timeout: 30 * time.Second} + resp, err := client.Do(req) + if err != nil { + return nil, fmt.Errorf("请求失败: %v", err) + } + defer resp.Body.Close() + + // 读取响应 + respBytes, err := io.ReadAll(resp.Body) + if err != nil { + return nil, fmt.Errorf("读取响应失败: %v", err) + } + + var result map[string]interface{} + if err := json.Unmarshal(respBytes, &result); err != nil { + return nil, fmt.Errorf("解析响应失败: %v", err) + } + + return result, nil +} + +// ExampleOrder 下单接口示例 +func ExampleOrder() { + client := NewAPIClient("http://localhost:8080") + + bizData := map[string]interface{}{ + "actCode": "ACT001", + "goodsCode": "123456", + "actOrderNum": "00001", + "account": "19912345678", + "callbackUrl": "https://xxx/notice", + } + + result, err := client.SendRequest("/api/order", bizData) + if err != nil { + fmt.Printf("下单失败: %v\n", err) + return + } + + fmt.Printf("下单响应: %+v\n", result) + + // 如果有加密数据,解密查看 + if data, ok := result["data"].(string); ok && data != "" { + decrypted, err := crypto.SM4ECBDecrypt(data, client.SM4Key) + if err == nil { + fmt.Printf("解密后数据: %s\n", string(decrypted)) + } + } +} + +// ExampleQuery 查询接口示例 +func ExampleQuery() { + client := NewAPIClient("http://localhost:8080") + + bizData := map[string]interface{}{ + "actCode": "FBG6vdYqGE4mGX7EH/woEg==", + "orderNo": "HM1757046717684000102707339840b23222", + } + + result, err := client.SendRequest("/api/query", bizData) + if err != nil { + fmt.Printf("查询失败: %v\n", err) + return + } + + fmt.Printf("查询响应: %+v\n", result) +} + +// ExampleWechatRecharge 微信立减金充值示例 +func ExampleWechatRecharge() { + client := NewAPIClient("http://localhost:8080") + + bizData := map[string]interface{}{ + "actCode": "FBG6vdYqGE4mGX7EH/woEg==", + "goodsCode": "0001", + "actOrderNum": "0001", + "openId": "0001", + "appId": "00001", + } + + result, err := client.SendRequest("/api/wechat/recharge", bizData) + if err != nil { + fmt.Printf("充值失败: %v\n", err) + return + } + + fmt.Printf("充值响应: %+v\n", result) +} + +// ExampleCallback 回调通知示例(模拟供应商调用行方) +func ExampleCallback() { + client := NewAPIClient("http://localhost:8080") + + bizData := map[string]interface{}{ + "orderNo": "HM202509291010001", + "actOrderNum": "XY2025092910100001", + "status": 3, + "account": "19912345678", + } + + result, err := client.SendRequest("/api/callback", bizData) + if err != nil { + fmt.Printf("回调失败: %v\n", err) + return + } + + fmt.Printf("回调响应: %+v\n", result) +} +``` + +// File: xy_sh/pkg/crypto/crypto.go +```go +package crypto + +import ( + "bytes" + "encoding/base64" + "encoding/hex" + "fmt" + + "github.com/tjfoc/gmsm/sm3" + "github.com/tjfoc/gmsm/sm4" +) + +// SM4ECBEncrypt SM4-ECB模式加密 +func SM4ECBEncrypt(plaintext []byte, key []byte) (string, error) { + if len(key) != 16 { + return "", fmt.Errorf("SM4密钥长度必须为16字节") + } + + block, err := sm4.NewCipher(key) + if err != nil { + return "", fmt.Errorf("创建SM4 cipher失败: %v", err) + } + + padded := pkcs7Padding(plaintext, block.BlockSize()) + + ciphertext := make([]byte, len(padded)) + for i := 0; i < len(padded); i += block.BlockSize() { + block.Encrypt(ciphertext[i:i+block.BlockSize()], padded[i:i+block.BlockSize()]) + } + + return base64.StdEncoding.EncodeToString(ciphertext), nil +} + +// SM4ECBDecrypt SM4-ECB模式解密 +func SM4ECBDecrypt(encryptedData string, key []byte) ([]byte, error) { + if len(key) != 16 { + return nil, fmt.Errorf("SM4密钥长度必须为16字节") + } + + ciphertext, err := base64.StdEncoding.DecodeString(encryptedData) + if err != nil { + return nil, fmt.Errorf("base64解码失败: %v", err) + } + + block, err := sm4.NewCipher(key) + if err != nil { + return nil, fmt.Errorf("创建SM4 cipher失败: %v", err) + } + + blockSize := block.BlockSize() + if len(ciphertext)%blockSize != 0 { + return nil, fmt.Errorf("密文长度不是块大小的整数倍") + } + + plaintext := make([]byte, len(ciphertext)) + for i := 0; i < len(ciphertext); i += blockSize { + block.Decrypt(plaintext[i:i+blockSize], ciphertext[i:i+blockSize]) + } + + plaintext, err = pkcs7UnPadding(plaintext) + if err != nil { + return nil, fmt.Errorf("去除填充失败: %v", err) + } + + return plaintext, nil +} + +// SM3WithSalt 带盐的SM3哈希计算 +// 对应Java的 SmUtil.sm3WithSalt(saltBytes).digestHex(data) +func SM3WithSalt(data string, salt string) string { + // SM3带盐哈希:先对盐进行SM3哈希,然后用结果作为密钥进行HMAC-SM3 + saltHash := sm3.Sm3Sum([]byte(salt)) + h := sm3.New() + h.Write(saltHash) + h.Write([]byte(data)) + return hex.EncodeToString(h.Sum(nil)) +} + +// SM3Hash 计算SM3哈希值 +func SM3Hash(data []byte) string { + return hex.EncodeToString(sm3.Sm3Sum(data)) +} + +// pkcs7Padding PKCS7填充 +func pkcs7Padding(data []byte, blockSize int) []byte { + padding := blockSize - len(data)%blockSize + padText := bytes.Repeat([]byte{byte(padding)}, padding) + return append(data, padText...) +} + +// pkcs7UnPadding 去除PKCS7填充 +func pkcs7UnPadding(data []byte) ([]byte, error) { + length := len(data) + if length == 0 { + return nil, fmt.Errorf("数据为空") + } + padding := int(data[length-1]) + if padding > length || padding == 0 { + return nil, fmt.Errorf("无效的填充") + } + for i := length - padding; i < length; i++ { + if data[i] != byte(padding) { + return nil, fmt.Errorf("无效的填充") + } + } + return data[:length-padding], nil +} +``` + +现在让我检查一下所有文件是否都生成了: + +1. ✅ go.mod +2. ✅ cmd/server/main.go +3. ✅ internal/service/service.go +4. ✅ internal/router/router.go +5. ✅ internal/test/example.go +6. ✅ internal/biz/biz.go +7. ✅ internal/entities/request.go +8. ✅ internal/entities/response.go +9. ✅ internal/middleware/middleware.go +10. ✅ internal/config/config.go +11. ✅ pkg/crypto/crypto.go + +所有文件都已生成!让我输出完整的代码。 + +等等,让我重新检查一下SM3WithSalt的实现。Java的 `SmUtil.sm3WithSalt(saltBytes).digestHex(data)` 是怎么实现的? + +在Hutool中,`sm3WithSalt` 的实现是: +1. 将盐值进行SM3哈希 +2. 将盐的哈希值和数据拼接 +3. 再进行SM3哈希 + +所以应该是:`SM3(SM3(salt) + data)` + +让我修正一下实现。 + +实际上,更准确地说,Hutool的 `sm3WithSalt` 实现是: +```java +public static SM3 sm3WithSalt(byte[] salt) { + return new SM3(salt); +} +``` + +而 `digestHex(data)` 是计算 `SM3(salt + data)` 或者类似的方式。 + +在Hutool中,SM3带盐的实现是:将盐作为初始向量或与数据拼接。 + +更准确地说,Hutool的SM3带盐实现是: +1. 先对盐进行SM3哈希得到盐的摘要 +2. 将盐的摘要与数据拼接 +3. 再进行SM3哈希 + +或者更简单地说,就是 `SM3(salt + data)`。 + +让我用更准确的方式实现: + +```go +func SM3WithSalt(data string, salt string) string { + h := sm3.New() + h.Write([]byte(salt)) + h.Write([]byte(data)) + return hex.EncodeToString(h.Sum(nil)) +} +``` + +这样就是 `SM3(salt + data)`,和Java的 `sm3WithSalt` 行为一致。 + +好的,让我更新crypto.go中的实现。 + +实际上,Hutool的SM3带盐实现比较复杂。让我查一下... + +Hutool的 `SmUtil.sm3WithSalt(byte[] salt)` 返回一个SM3对象,该对象在初始化时使用盐值。当调用 `digestHex(data)` 时,它计算的是 `SM3(salt || data)`。 + +所以我的实现 `SM3(salt + data)` 是正确的。 + +好的,让我输出所有文件。现在开始生成所有文件: + +// File: xy_sh/go.mod +```go +module xy_sh + +go 1.26 + +require ( + github.com/gofiber/fiber/v2 v2.52.6 + github.com/tjfoc/gmsm v1.4.1 +) +``` + +// File: xy_sh/cmd/server/main.go +```go +package main + +import ( + "log" + "xy_sh/internal/config" + "xy_sh/internal/router" +) + +func main() { + cfg := config.LoadConfig() + + app := router.SetupRouter(cfg) + + log.Printf("服务启动,监听端口: %s", cfg.ServerPort) + if err := app.Listen(":" + cfg.ServerPort); err != nil { + log.Fatalf("服务启动失败: %v", err) + } +} +``` + +// File: xy_sh/internal/config/config.go +```go +package config + +import "os" + +type Config struct { + ServerPort string + SM3Salt string + SM4Key []byte +} + +func LoadConfig() *Config { + port := os.Getenv("SERVER_PORT") + if port == "" { + port = "8080" + } + + sm3Salt := os.Getenv("SM3_SALT") + if sm3Salt == "" { + sm3Salt = "default_sm3_salt" + } + + sm4KeyStr := os.Getenv("SM4_KEY") + var sm4Key []byte + if sm4KeyStr != "" { + sm4Key = []byte(sm4KeyStr) + } else { + sm4Key = []byte("1234567890123456") + } + + return &Config{ + ServerPort: port, + SM3Salt: sm3Salt, + SM4Key: sm4Key, + } +} +``` + +// File: xy_sh/internal/entities/request.go +```go +package entities + +// OrderRequest 卡券/直充权益下单接口请求业务参数 +type OrderRequest struct { + ActCode string `json:"actCode"` // 活动code + GoodsCode string `json:"goodsCode"` // 供应商商品编号 + ActOrderNum string `json:"actOrderNum"` // 活动方订单号 + Account string `json:"account,omitempty"` // 充值账号 + CallbackUrl string `json:"callbackUrl,omitempty"` // 回调地址 +} + +// QueryRequest 订单查询接口请求业务参数 +type QueryRequest struct { + ActCode string `json:"actCode"` // 活动code + OrderNo string `json:"orderNo"` // 供应商订单号 +} + +// WechatRechargeRequest 微信立减金订单充值接口请求业务参数 +type WechatRechargeRequest struct { + ActCode string `json:"actCode"` // 活动code + OrderNo string `json:"orderNo"` // 供应商订单号 + GoodsCode string `json:"goodsCode"` // 供应商商品编号 + ActOrderNum string `json:"actOrderNum"` // 活动方订单号 + AppId string `json:"appId"` // 公众账号ID + OpenId string `json:"openId"` // 微信用户标识 + CallbackUrl string `json:"callbackUrl,omitempty"` // 回调地址 +} + +// CallbackRequest 充值结果通知接口回调业务参数 +type CallbackRequest struct { + OrderNo string `json:"orderNo"` // 供应商订单号 + ActOrderNum string `json:"actOrderNum"` // 活动方订单号 + Status int `json:"status"` // 订单状态 + Account string `json:"account,omitempty"` // 直充账号 + CardInfo *CardInfo `json:"cardInfo,omitempty"` // 卡券信息 + CouponId string `json:"couponId,omitempty"` // 微信优惠id +} + +// CardInfo 卡券信息 +type CardInfo struct { + CouponNo string `json:"couponNo"` // 卡号/短链 + CouponCode string `json:"couponCode"` // 卡密 + ExpireTime string `json:"expireTime"` // 过期时间 +} + +// EncryptedRequest 加密请求体 +type EncryptedRequest struct { + EncryptedData string `json:"encryptedData"` // SM4加密后的业务数据 +} +``` + +// File: xy_sh/internal/entities/response.go +```go +package entities + +// ApiResponse 通用API响应 +type ApiResponse struct { + Code int `json:"code"` // 返回状态编码,0成功 -1失败 + Msg string `json:"msg"` // 返回错误信息 + Data interface{} `json:"data"` // JSON格式业务数据进行SM4加密后的字符串 +} + +// OrderResponse 下单接口响应业务参数 +type OrderResponse struct { + OrderNo string `json:"orderNo"` // 权益订单号 + CouponNo string `json:"couponNo,omitempty"` // 卡号 + CouponCode string `json:"couponCode,omitempty"` // 卡密 + Status int `json:"status"` // 状态 + ExpireTime string `json:"expireTime,omitempty"` // 有效期 +} + +// QueryResponse 查询接口响应业务参数 +type QueryResponse struct { + OrderNo string `json:"orderNo"` // 权益订单号 + Status int `json:"status"` // 订单状态 + Account string `json:"account,omitempty"` // 充值账号 + CardInfo *CardInfo `json:"cardInfo,omitempty"` // 卡券信息 + CouponId string `json:"couponId,omitempty"` // 优惠id +} + +// WechatRechargeResponse 微信立减金充值响应业务参数 +type WechatRechargeResponse struct { + OrderNo string `json:"orderNo"` // 权益订单号 + Status int `json:"status"` // 订单状态 + CouponId string `json:"couponId,omitempty"` // 微信优惠id +} +``` + +// File: xy_sh/internal/middleware/middleware.go +```go +package middleware + +import ( + "encoding/json" + "strings" + + "github.com/gofiber/fiber/v2" + "xy_sh/internal/config" + "xy_sh/pkg/crypto" +) + +// VerifySign 验证签名中间件 +// 从请求头获取timestamp和sign,验证SM3(salt + timestamp + encryptedData)是否匹配 +func VerifySign(cfg *config.Config) fiber.Handler { + return func(c *fiber.Ctx) error { + timestamp := c.Get("timestamp") + sign := c.Get("sign") + + if timestamp == "" || sign == "" { + return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{ + "code": -1, + "msg": "缺少timestamp或sign请求头", + }) + } + + body := c.Body() + if len(body) == 0 { + return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{ + "code": -1, + "msg": "请求体不能为空", + }) + } + + var req struct { + EncryptedData string `json:"encryptedData"` + } + if err := json.Unmarshal(body, &req); err != nil { + return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{ + "code": -1, + "msg": "请求体格式错误", + }) + } + + // 验证签名:SM3(salt + timestamp + encryptedData) + expectedSign := crypto.SM3WithSalt(timestamp+req.EncryptedData, cfg.SM3Salt) + if !strings.EqualFold(expectedSign, sign) { + return c.Status(fiber.StatusUnauthorized).JSON(fiber.Map{ + "code": -1, + "msg": "签名验证失败", + }) + } + + // 解密业务数据并存入上下文 + decrypted, err := crypto.SM4ECBDecrypt(req.EncryptedData, cfg.SM4Key) + if err != nil { + return c.Status(fiber.StatusBadRequest).JSON(fiber.Map{ + "code": -1, + "msg": "解密失败: " + err.Error(), + }) + } + + c.Locals("decryptedBody", decrypted) + return c.Next() + } +} +``` + +// File: xy_sh/internal/biz/biz.go +```go +package biz + +import ( + "encoding/json" + "xy_sh/internal/config" + "xy_sh/internal/entities" + "xy_sh/pkg/crypto" +) + +// Biz 业务逻辑层 +type Biz struct { + cfg *config.Config +} + +// NewBiz 创建业务逻辑实例 +func NewBiz(cfg *config.Config) *Biz { + return &Biz{cfg: cfg} +} + +// EncryptResponse 加密响应数据(SM4-ECB) +func (b *Biz) EncryptResponse(data interface{}) (string, error) { + jsonBytes, err := json.Marshal(data) + if err != nil { + return "", err + } + return crypto.SM4ECBEncrypt(jsonBytes, b.cfg.SM4Key) +} + +// DecryptRequest 解密请求数据(SM4-ECB) +func (b *Biz) DecryptRequest(encryptedData string) ([]byte, error) { + return crypto.SM4ECBDecrypt(encryptedData, b.cfg.SM4Key) +} + +// ProcessOrder 处理下单请求 +func (b *Biz) ProcessOrder(req *entities.OrderRequest) (*entities.OrderResponse, error) { + // TODO: 实现下单业务逻辑 + // 1. 校验参数 + // 2. 调用供应商接口或处理业务 + // 3. 返回结果 + return &entities.OrderResponse{ + OrderNo: "HM" + generateOrderNo(), + Status: 0, + ExpireTime: "2025-12-31 23:59:59", + }, nil +} + +// ProcessQuery 处理订单查询请求 +func (b *Biz) ProcessQuery(req *entities.QueryRequest) (*entities.QueryResponse, error) { + // TODO: 实现订单查询业务逻辑 + return &entities.QueryResponse{ + OrderNo: req.OrderNo, + Status: 0, + }, nil +} + +// ProcessWechatRecharge 处理微信立减金充值请求 +func (b *Biz) ProcessWechatRecharge(req *entities.WechatRechargeRequest) (*entities.WechatRechargeResponse, error) { + // TODO: 实现微信立减金充值业务逻辑 + return &entities.WechatRechargeResponse{ + OrderNo: req.OrderNo, + Status: 0, + }, nil +} + +// ProcessCallback 处理回调通知 +func (b *Biz) ProcessCallback(req *entities.CallbackRequest) error { + // TODO: 实现回调通知处理逻辑 + // 1. 更新订单状态 + // 2. 处理卡券信息 + // 3. 处理微信优惠信息 + return nil +} + +// generateOrderNo 生成订单号(示例) +func generateOrderNo() string { + // TODO: 实现订单号生成逻辑 + return "0000000000000000" +} +``` + +// File: xy_sh/internal/service/service.go +```go +package service + +import ( + "encoding/json" + + "github.com/gofiber/fiber/v2" + "xy_sh/internal/biz" + "xy_sh/internal/config" + "xy_sh/internal/entities" +) + +// Service 服务层 +type Service struct { + biz *biz.Biz + cfg *config.Config +} + +// NewService 创建服务实例 +func NewService(cfg *config.Config) *Service { + return &Service{ + biz: biz.NewBiz(cfg), + cfg: cfg, + } +} + +// Order 卡券/直充权益下单接口 +func (s *Service) Order(c *fiber.Ctx) error { + decrypted := c.Locals("decryptedBody").([]byte) + + var req entities.OrderRequest + if err := json.Unmarshal(decrypted, &req); err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: "业务参数解析失败: " + err.Error(), + }) + } + + resp, err := s.biz.ProcessOrder(&req) + if err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: err.Error(), + }) + } + + encryptedData, err := s.biz.EncryptResponse(resp) + if err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: "响应加密失败: " + err.Error(), + }) + } + + return c.JSON(entities.ApiResponse{ + Code: 0, + Msg: "请求成功", + Data: encryptedData, + }) +} + +// Query 卡券/直充/微信立减金订单查询接口 +func (s *Service) Query(c *fiber.Ctx) error { + decrypted := c.Locals("decryptedBody").([]byte) + + var req entities.QueryRequest + if err := json.Unmarshal(decrypted, &req); err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: "业务参数解析失败: " + err.Error(), + }) + } + + resp, err := s.biz.ProcessQuery(&req) + if err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: err.Error(), + }) + } + + encryptedData, err := s.biz.EncryptResponse(resp) + if err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: "响应加密失败: " + err.Error(), + }) + } + + return c.JSON(entities.ApiResponse{ + Code: 0, + Msg: "请求成功", + Data: encryptedData, + }) +} + +// WechatRecharge 微信立减金订单充值接口 +func (s *Service) WechatRecharge(c *fiber.Ctx) error { + decrypted := c.Locals("decryptedBody").([]byte) + + var req entities.WechatRechargeRequest + if err := json.Unmarshal(decrypted, &req); err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: "业务参数解析失败: " + err.Error(), + }) + } + + resp, err := s.biz.ProcessWechatRecharge(&req) + if err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: err.Error(), + }) + } + + encryptedData, err := s.biz.EncryptResponse(resp) + if err != nil { + return c.JSON(entities.ApiResponse{ + Code: -1, + Msg: "响应加密失败: " + err.Error(), + }) + } + + return c.JSON(entities.ApiResponse{ + Code: 0, + Msg: "请求成功", + Data: encryptedData, + }) +} + +// Callback 卡券/直充/微信立减金充值结果通知接口 +// 行方回调通知接口:接收供应商推送的充值结果 +// 返回HTTP 200且内容为"ok"表示接收成功 +func (s *Service) Callback(c *fiber.Ctx) error { + decrypted := c.Locals("decryptedBody").([]byte) + + var req entities.CallbackRequest + if err := json.Unmarshal(decrypted, &req); err != nil { + return c.Status(fiber.StatusBadRequest).SendString("参数解析失败") + } + + if err := s.biz.ProcessCallback(&req); err != nil { + return c.Status(fiber.StatusInternalServerError).SendString(err.Error()) + } + + return c.SendString("ok") +} +``` + +// File: xy_sh/internal/router/router.go +```go +package router + +import ( + "github.com/gofiber/fiber/v2" + "xy_sh/internal/config" + "xy_sh/internal/middleware" + "xy_sh/internal/service" +) + +// SetupRouter 设置路由 +func SetupRouter(cfg *config.Config) *fiber.App { + app := fiber.New() + + svc := service.NewService(cfg) + + // 需要签名验证的路由组 + api := app.Group("/api", middleware.VerifySign(cfg)) + { + // 接口1:卡券/直充权益下单接口 + api.Post("/order", svc.Order) + + // 接口2:卡券/直充/微信立减金订单查询接口 + api.Post("/query", svc.Query) + + // 接口3:微信立减金订单充值接口 + api.Post("/wechat/recharge", svc.WechatRecharge) + + // 接口4:卡券/直充/微信立减金充值结果通知接口(行方回调) + api.Post("/callback", svc.Callback) + } + + return app +} +``` + +// File: xy_sh/internal/test/example.go +```go +package test + +import ( + "bytes" + "encoding/json" + "fmt" + "io" + "net/http" + "time" + + "xy_sh/pkg/crypto" +) + +// 测试配置(请替换为实际值) +const ( + sm3Salt = "your_sm3_salt" + sm4Key = "1234567890123456" // 16字节密钥 +) + +// APIClient API客户端示例 +type APIClient struct { + BaseURL string + SM3Salt string + SM4Key []byte +} + +// NewAPIClient 创建API客户端 +func NewAPIClient(baseURL string) *APIClient { + return &APIClient{ + BaseURL: baseURL, + SM3Salt: sm3Salt, + SM4Key: []byte(sm4Key), + } +} + +// EncryptAndSign 加密业务数据并生成签名 +func (c *APIClient) EncryptAndSign(bizData interface{}) (timestamp string, encryptedData string, sign string, err error) { + jsonBytes, err := json.Marshal(bizData) + if err != nil { + return "", "", "", fmt.Errorf("序列化失败: %v", err) + } + + encryptedData, err = crypto.SM4ECBEncrypt(jsonBytes, c.SM4Key) + if err != nil { + return "", "", "", fmt.Errorf("加密失败: %v", err) + } + + timestamp = fmt.Sprintf("%d", time.Now().UnixMilli()) + + // 签名:SM3(salt + timestamp + encryptedData) + sign = crypto.SM3WithSalt(timestamp+encryptedData, c.SM3Salt) + + return timestamp, encryptedData, sign, nil +} + +// SendRequest 发送请求 +func (c *APIClient) SendRequest(path string, bizData interface{}) (map[string]interface{}, error) { + timestamp, encryptedData, sign, err := c.EncryptAndSign(bizData) + if err != nil { + return nil, err + } + + reqBody := map[string]string{ + "encryptedData": encryptedData, + } + reqBytes, _ := json.Marshal(reqBody) + + req, err := http.NewRequest("POST", c.BaseURL+path, bytes.NewReader(reqBytes)) + if err != nil { + return nil, fmt.Errorf("创建请求失败: %v", err) + } + + req.Header.Set("Content-Type", "application/json") + req.Header.Set("timestamp", timestamp) + req.Header.Set("sign", sign) + + client := &http.Client{Timeout: 30 * time.Second} + resp, err := client.Do(req) + if err != nil { + return nil, fmt.Errorf("请求失败: %v", err) + } + defer resp.Body.Close() + + respBytes, err := io.ReadAll(resp.Body) + if err != nil { + return nil, fmt.Errorf("读取响应失败: %v", err) + } + + var result map[string]interface{} + if err := json.Unmarshal(respBytes, &result); err != nil { + return nil, fmt.Errorf("解析响应失败: %v", err) + } + + return result, nil +} + +// ExampleOrder 下单接口示例 +func ExampleOrder() { + client := NewAPIClient("http://localhost:8080") + + bizData := map[string]interface{}{ + "actCode": "ACT001", + "goodsCode": "123456", + "actOrderNum": "00001", + "account": "19912345678", + "callbackUrl": "https://xxx/notice", + } + + result, err := client.SendRequest("/api/order", bizData) + if err != nil { + fmt.Printf("下单失败: %v\n", err) + return + } + + fmt.Printf("下单响应: %+v\n", result) + + if data, ok := result["data"].(string); ok && data != "" { + decrypted, err := crypto.SM4ECBDecrypt(data, client.SM4Key) + if err == nil { + fmt.Printf("解密后数据: %s\n", string(decrypted)) + } + } +} + +// ExampleQuery 查询接口示例 +func ExampleQuery() { + client := NewAPIClient("http://localhost:8080") + + bizData := map[string]interface{}{ + "actCode": "FBG6vdYqGE4mGX7EH/woEg==", + "orderNo": "HM1757046717684000102707339840b23222", + } + + result, err := client.SendRequest("/api/query", bizData) + if err != nil { + fmt.Printf("查询失败: %v\n", err) + return + } + + fmt.Printf("查询响应: %+v\n", result) +} + +// ExampleWechatRecharge 微信立减金充值示例 +func ExampleWechatRecharge() { + client := NewAPIClient("http://localhost:8080") + + bizData := map[string]interface{}{ + "actCode": "FBG6vdYqGE4mGX7EH/woEg==", + "goodsCode": "0001", + "actOrderNum": "0001", + "openId": "0001", + "appId": "00001", + } + + result, err := client.SendRequest("/api/wechat/recharge", bizData) + if err != nil { + fmt.Printf("充值失败: %v\n", err) + return + } + + fmt.Printf("充值响应: %+v\n", result) +} + +// ExampleCallback 回调通知示例(模拟供应商调用行方) +func ExampleCallback() { + client := NewAPIClient("http://localhost:8080") + + bizData := map[string]interface{}{ + "orderNo": "HM202509291010001", + "actOrderNum": "XY2025092910100001", + "status": 3, + "account": "19912345678", + } + + result, err := client.SendRequest("/api/callback", bizData) + if err != nil { + fmt.Printf("回调失败: %v\n", err) + return + } + + fmt.Printf("回调响应: %+v\n", result) +} +``` + +// File: xy_sh/pkg/crypto/crypto.go +```go +package crypto + +import ( + "bytes" + "encoding/base64" + "encoding/hex" + "fmt" + + "github.com/tjfoc/gmsm/sm3" + "github.com/tjfoc/gmsm/sm4" +) + +// SM4ECBEncrypt SM4-ECB模式加密 +// 使用 github.com/tjfoc/gmsm/sm4 实现 +// 输出base64编码 +func SM4ECBEncrypt(plaintext []byte, key []byte) (string, error) { + if len(key) != 16 { + return "", fmt.Errorf("SM4密钥长度必须为16字节") + } + + block, err := sm4.NewCipher(key) + if err != nil { + return "", fmt.Errorf("创建SM4 cipher失败: %v", err) + } + + padded := pkcs7Padding(plaintext, block.BlockSize()) + + ciphertext := make([]byte, len(padded)) + for i := 0; i < len(padded); i += block.BlockSize() { + block.Encrypt(ciphertext[i:i+block.BlockSize()], padded[i:i+block.BlockSize()]) + } + + return base64.StdEncoding.EncodeToString(ciphertext), nil +} + +// SM4ECBDecrypt SM4-ECB模式解密 +// 输入base64编码的密文,返回解密后的明文 +func SM4ECBDecrypt(encryptedData string, key []byte) ([]byte, error) { + if len(key) != 16 { + return nil, fmt.Errorf("SM4密钥长度必须为16字节") + } + + ciphertext, err := base64.StdEncoding.DecodeString(encryptedData) + if err != nil { + return nil, fmt.Errorf("base64解码失败: %v", err) + } + + block, err := sm4.NewCipher(key) + if err != nil { + return nil, fmt.Errorf("创建SM4 cipher失败: %v", err) + } + + blockSize := block.BlockSize() + if len(ciphertext)%blockSize != 0 { + return nil, fmt.Errorf("密文长度不是块大小的整数倍") + } + + plaintext := make([]byte, len(ciphertext)) + for i := 0; i < len(ciphertext); i += blockSize { + block.Decrypt(plaintext[i:i+blockSize], ciphertext[i:i+blockSize]) + } + + plaintext, err = pkcs7UnPadding(plaintext) + if err != nil { + return nil, fmt.Errorf("去除填充失败: %v", err) + } + + return plaintext, nil +} + +// SM3WithSalt 带盐的SM3哈希计算 +// 对应Java的 SmUtil.sm3WithSalt(saltBytes).digestHex(data) +// 实现方式:SM3(salt + data),输出十六进制字符串 +func SM3WithSalt(data string, salt string) string { + h := sm3.New() + h.Write([]byte(salt)) + h.Write([]byte(data)) + return hex.EncodeToString(h.Sum(nil)) +} + +// SM3Hash 计算SM3哈希值(十六进制输出) +func SM3Hash(data []byte) string { + return hex.EncodeToString(sm3.Sm3Sum(data)) +} + +// pkcs7Padding PKCS7填充 +func pkcs7Padding(data []byte, blockSize int) []byte { + padding := blockSize - len(data)%blockSize + padText := bytes.Repeat([]byte{byte(padding)}, padding) + return append(data, padText...) +} + +// pkcs7UnPadding 去除PKCS7填充 +func pkcs7UnPadding(data []byte) ([]byte, error) { + length := len(data) + if length == 0 { + return nil, fmt.Errorf("数据为空") + } + padding := int(data[length-1]) + if padding > length || padding == 0 { + return nil, fmt.Errorf("无效的填充") + } + for i := length - padding; i < length; i++ { + if data[i] != byte(padding) { + return nil, fmt.Errorf("无效的填充") + } + } + return data[:length-padding], nil +} +``` + +=== 服务端生成完成 === + +## 加密实现 + +以下是从加密工具获取的完整实现: + +### 加密实现 1 + +{ + "success": true, + "data": "\n### SM4-CBC 国密对称加密完整实现指南\n\n**⚠️ 重要:必须使用第三方库,不要自己实现 SM4 算法!**\n**推荐使用:github.com/tjfoc/gmsm**\n\n**前置要求**:\n```bash\ngo get github.com/tjfoc/gmsm\n```\n\n**配置参数**:\n- 编码方式: base64\n\n**完整代码模板(请直接复制使用)**:\n\n```go\npackage crypto\n\nimport (\n \"crypto/cipher\"\n \"crypto/rand\"\n \"encoding/base64\"\n \"encoding/hex\"\n \"fmt\"\n \"io\"\n \"bytes\"\n\n \"github.com/tjfoc/gmsm/sm4\" // ⚠️ 必须使用此库,不要自己实现SM4\n)\n\n// SM4CBCEncrypt SM4-CBC模式加密\n// 使用 github.com/tjfoc/gmsm/sm4 实现\nfunc SM4CBCEncrypt(plaintext []byte, key []byte) (string, error) {\n if len(key) != 16 {\n return \"\", fmt.Errorf(\"SM4密钥长度必须为16字节\")\n }\n\n // 使用 gmsm 库创建 SM4 cipher\n block, err := sm4.NewCipher(key)\n if err != nil {\n return \"\", fmt.Errorf(\"创建SM4 cipher失败: %v\", err)\n }\n\n padded := pkcs7Padding(plaintext, block.BlockSize())\n\n iv := make([]byte, block.BlockSize())\n if _, err := io.ReadFull(rand.Reader, iv); err != nil {\n return \"\", fmt.Errorf(\"生成IV失败: %v\", err)\n }\n\n mode := cipher.NewCBCEncrypter(block, iv)\n ciphertext := make([]byte, len(padded))\n mode.CryptBlocks(ciphertext, padded)\n\n result := append(iv, ciphertext...)\n if \"base64\" == \"hex\" {\n return hex.EncodeToString(result), nil\n }\n return base64.StdEncoding.EncodeToString(result), nil\n}\n\n// SM4CBCDecrypt SM4-CBC模式解密\n// 使用 github.com/tjfoc/gmsm/sm4 实现\nfunc SM4CBCDecrypt(encryptedData string, key []byte) ([]byte, error) {\n if len(key) != 16 {\n return nil, fmt.Errorf(\"SM4密钥长度必须为16字节\")\n }\n\n var data []byte\n var err error\n if \"base64\" == \"hex\" {\n data, err = hex.DecodeString(encryptedData)\n } else {\n data, err = base64.StdEncoding.DecodeString(encryptedData)\n }\n if err != nil {\n return nil, fmt.Errorf(\"解码失败: %v\", err)\n }\n\n block, err := sm4.NewCipher(key)\n if err != nil {\n return nil, fmt.Errorf(\"创建SM4 cipher失败: %v\", err)\n }\n\n blockSize := block.BlockSize()\n if len(data) \u003c blockSize {\n return nil, fmt.Errorf(\"数据长度不足\")\n }\n iv := data[:blockSize]\n ciphertext := data[blockSize:]\n\n mode := cipher.NewCBCDecrypter(block, iv)\n plaintext := make([]byte, len(ciphertext))\n mode.CryptBlocks(plaintext, ciphertext)\n\n plaintext, err = pkcs7UnPadding(plaintext)\n if err != nil {\n return nil, fmt.Errorf(\"去除填充失败: %v\", err)\n }\n\n return plaintext, nil\n}\n\n// pkcs7Padding PKCS7填充\nfunc pkcs7Padding(data []byte, blockSize int) []byte {\n padding := blockSize - len(data)%blockSize\n padText := bytes.Repeat([]byte{byte(padding)}, padding)\n return append(data, padText...)\n}\n\n// pkcs7UnPadding 去除PKCS7填充\nfunc pkcs7UnPadding(data []byte) ([]byte, error) {\n length := len(data)\n if length == 0 {\n return nil, fmt.Errorf(\"数据为空\")\n }\n padding := int(data[length-1])\n if padding \u003e length || padding == 0 {\n return nil, fmt.Errorf(\"无效的填充\")\n }\n for i := length - padding; i \u003c length; i++ {\n if data[i] != byte(padding) {\n return nil, fmt.Errorf(\"无效的填充\")\n }\n }\n return data[:length-padding], nil\n}\n```\n\n**⚠️ 重要提醒**:\n1. **不要自己实现 SM4 算法**,请直接使用 github.com/tjfoc/gmsm\n2. 这个库是国密官方推荐的 Go 实现,安全可靠\n3. 在 go.mod 中添加依赖:`require github.com/tjfoc/gmsm v1.4.1`\n\n**注意事项**:\n- SM4 密钥固定为 16 字节\n- IV 必须随机生成且每次不同\n- CBC 模式需要 IV,ECB 模式不需要\n", + "tool": "sm4_cbc_encrypt" +} + +### 加密实现 2 + +{ + "success": true, + "data": "\n### SM3 国密哈希算法完整实现指南\n\n**适用场景**:文档要求使用国密 SM3 算法进行摘要计算或签名验证\n\n**前置要求**:需要安装 github.com/tjfoc/gmsm\n\n```bash\ngo get github.com/tjfoc/gmsm\n```\n\n**配置参数**:\n- 编码方式: hex\n- 包含 HMAC: true\n\n**完整代码模板**:\n\n```go\npackage crypto\n\nimport (\n \"crypto/hmac\"\n \"encoding/base64\"\n \"encoding/hex\"\n \"fmt\"\n \"os\"\n \n \"github.com/tjfoc/gmsm/sm3\"\n)\n\n// SM3Hash 计算SM3哈希值\n// data: 待哈希的数据\n// encoding: 输出编码方式 (hex/base64)\n// 返回: 编码后的哈希值\nfunc SM3Hash(data []byte, encoding string) (string, error) {\n h := sm3.New()\n h.Write(data)\n hashBytes := h.Sum(nil)\n \n if encoding == \"base64\" {\n return base64.StdEncoding.EncodeToString(hashBytes), nil\n }\n return hex.EncodeToString(hashBytes), nil\n}\n\n// SM3HashString 计算字符串的SM3哈希值(便捷方法)\nfunc SM3HashString(data string, encoding string) (string, error) {\n return SM3Hash([]byte(data), encoding)\n}\n\n// SM3HashFile 计算文件的SM3哈希值\nfunc SM3HashFile(filePath string, encoding string) (string, error) {\n data, err := os.ReadFile(filePath)\n if err != nil {\n return \"\", fmt.Errorf(\"读取文件失败: %v\", err)\n }\n return SM3Hash(data, encoding)\n}\n\n// SM3Verify 验证数据与哈希值是否匹配\nfunc SM3Verify(data []byte, hash string, encoding string) (bool, error) {\n expected, err := SM3Hash(data, encoding)\n if err != nil {\n return false, err\n }\n return expected == hash, nil\n}\n\n// HMACSM3 HMAC-SM3计算\n// 使用标准HMAC算法,底层使用SM3哈希函数\nfunc HMACSM3(data []byte, key []byte) string {\n // 使用标准HMAC,底层哈希函数用SM3\n h := hmac.New(sm3.New, key)\n h.Write(data)\n return hex.EncodeToString(h.Sum(nil))\n}\n```\n\n**使用示例**:\n```go\n// 计算字符串哈希\nhash, _ := SM3HashString(\"hello world\", \"hex\")\nfmt.Println(hash) // 输出64位十六进制字符串\n\n// 验证哈希\nvalid, _ := SM3Verify([]byte(\"hello world\"), hash, \"hex\")\nfmt.Println(valid) // true\n\n// HMAC-SM3示例\nkey := []byte(\"secret_key\")\ndata := []byte(\"hello world\")\nhmacResult := HMACSM3(data, key)\nfmt.Println(hmacResult)\n```\n\n**注意事项**:\n- SM3 输出固定 256 位(32字节)的哈希值\n- 十六进制输出为 64 位字符串\n- 常用于数字签名、完整性校验等场景\n- SM3 是国密标准哈希算法,与 SHA-256 类似\n- HMAC-SM3 需要使用标准库 crypto/hmac,底层哈希函数使用 sm3.New\n", + "tool": "sm3_hash" +} + +### 加密实现 3 + +{ + "success": true, + "data": "\n### SM4-ECB 国密对称加密完整实现指南\n\n**⚠️ 重要提示**:ECB模式不安全,仅用于兼容老旧系统。\n\n**⚠️ 重要:必须使用第三方库,不要自己实现 SM4 算法!**\n**推荐使用:github.com/tjfoc/gmsm**\n\n**前置要求**:\n```bash\ngo get github.com/tjfoc/gmsm\n```\n\n**配置参数**:\n- 编码方式: base64\n\n**完整代码模板(请直接复制使用)**:\n\n```go\npackage crypto\n\nimport (\n \"encoding/base64\"\n \"encoding/hex\"\n \"fmt\"\n \"bytes\"\n\n \"github.com/tjfoc/gmsm/sm4\" // ⚠️ 必须使用此库,不要自己实现SM4\n)\n\n// SM4ECBEncrypt SM4-ECB模式加密\n// 使用 github.com/tjfoc/gmsm/sm4 实现\nfunc SM4ECBEncrypt(plaintext []byte, key []byte) (string, error) {\n if len(key) != 16 {\n return \"\", fmt.Errorf(\"SM4密钥长度必须为16字节\")\n }\n\n block, err := sm4.NewCipher(key)\n if err != nil {\n return \"\", fmt.Errorf(\"创建SM4 cipher失败: %v\", err)\n }\n\n padded := pkcs7Padding(plaintext, block.BlockSize())\n\n ciphertext := make([]byte, len(padded))\n for i := 0; i \u003c len(padded); i += block.BlockSize() {\n block.Encrypt(ciphertext[i:i+block.BlockSize()], padded[i:i+block.BlockSize()])\n }\n\n if \"base64\" == \"hex\" {\n return hex.EncodeToString(ciphertext), nil\n }\n return base64.StdEncoding.EncodeToString(ciphertext), nil\n}\n\n// SM4ECBDecrypt SM4-ECB模式解密\n// 使用 github.com/tjfoc/gmsm/sm4 实现\nfunc SM4ECBDecrypt(encryptedData string, key []byte) ([]byte, error) {\n if len(key) != 16 {\n return nil, fmt.Errorf(\"SM4密钥长度必须为16字节\")\n }\n\n var ciphertext []byte\n var err error\n if \"base64\" == \"hex\" {\n ciphertext, err = hex.DecodeString(encryptedData)\n } else {\n ciphertext, err = base64.StdEncoding.DecodeString(encryptedData)\n }\n if err != nil {\n return nil, fmt.Errorf(\"解码失败: %v\", err)\n }\n\n block, err := sm4.NewCipher(key)\n if err != nil {\n return nil, fmt.Errorf(\"创建SM4 cipher失败: %v\", err)\n }\n\n blockSize := block.BlockSize()\n if len(ciphertext)%blockSize != 0 {\n return nil, fmt.Errorf(\"密文长度不是块大小的整数倍\")\n }\n\n plaintext := make([]byte, len(ciphertext))\n for i := 0; i \u003c len(ciphertext); i += blockSize {\n block.Decrypt(plaintext[i:i+blockSize], ciphertext[i:i+blockSize])\n }\n\n plaintext, err = pkcs7UnPadding(plaintext)\n if err != nil {\n return nil, fmt.Errorf(\"去除填充失败: %v\", err)\n }\n\n return plaintext, nil\n}\n\n// pkcs7Padding 和 pkcs7UnPadding 函数请参考 CBC 模式实现\n```\n\n**⚠️ 重要提醒**:\n1. **不要自己实现 SM4 算法**,请直接使用 github.com/tjfoc/gmsm\n2. 这个库是国密官方推荐的 Go 实现,安全可靠\n3. 在 go.mod 中添加依赖:`require github.com/tjfoc/gmsm v1.4.1`\n\n**⚠️ 安全警告**:\n- ECB模式不应在新系统中使用\n- 仅用于兼容老旧的国密系统\n- 推荐使用 SM4-CBC 模式\n", + "tool": "sm4_ecb_encrypt" +} +