Initial commit

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

common/crypt/checkSign.go

@@ -0,0 +1,137 @@
+package crypt
+
+import (
+	"91porn-server/common/log"
+	"91porn-server/web/webg"
+	"crypto/aes"
+	"crypto/cipher"
+	"encoding/hex"
+	"fmt"
+	"net/url"
+	"reflect"
+	"strings"
+)
+
+//const appSecret = "iPEnB74mfCZhNNnY" //（客服后台->产品列表 对应产品的产品密钥） 测试
+
+func CheckSign(sign string, data interface{}, router string) bool {
+	//对参数进行加密，和sign 进行对比
+	dataMap, _ := StructToMap(data, router)
+	params := url.Values{}
+	for k, v := range dataMap {
+		params.Set(k, v)
+	}
+	mySign, err := GenerateSign(params.Encode(), webg.Conf.Customer.Secret)
+	if err != nil {
+		log.Error("CheckSign Generate signature error:", log.Any("Secret", webg.Conf.Customer.Secret), log.E(err))
+		return false
+	}
+	return mySign == sign
+}
+
+// StructToMap 将结构体转换为map[string]string
+func StructToMap(data interface{}, router string) (map[string]string, error) {
+	result := make(map[string]string)
+
+	// 使用反射获取结构体信息
+	v := reflect.ValueOf(data)
+	t := reflect.TypeOf(data)
+
+	// 如果是指针，获取指向的元素
+	if t.Kind() == reflect.Ptr {
+		v = v.Elem()
+		t = t.Elem()
+	}
+
+	// 确保是结构体类型
+	if t.Kind() != reflect.Struct {
+		return nil, fmt.Errorf("data must be a struct or pointer to struct")
+	}
+
+	// 遍历结构体字段
+	for i := 0; i < v.NumField(); i++ {
+		field := t.Field(i)
+		value := v.Field(i)
+
+		// 获取json标签作为key
+		jsonTag := field.Tag.Get("json")
+		if jsonTag == "" {
+			// 如果没有json标签，使用字段名
+			jsonTag = strings.ToLower(field.Name)
+		}
+		if router != "" {
+			if jsonTag == "appId" || jsonTag == "sign" {
+				continue
+			}
+		}
+		// 获取字段值并转换为字符串
+		var valueStr string
+		switch value.Kind() {
+		case reflect.String:
+			valueStr = value.String()
+		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+			valueStr = fmt.Sprintf("%d", value.Int())
+		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+			valueStr = fmt.Sprintf("%d", value.Uint())
+		case reflect.Bool:
+			valueStr = fmt.Sprintf("%t", value.Bool())
+		case reflect.Float32, reflect.Float64:
+			valueStr = fmt.Sprintf("%f", value.Float())
+		default:
+			valueStr = fmt.Sprintf("%v", value.Interface())
+		}
+
+		// 添加到结果中
+		result[jsonTag] = valueStr
+	}
+
+	return result, nil
+}
+
+// PKCS7Padding PKCS7填充
+func PKCS7Padding_1(data []byte, blockSize int) []byte {
+	padding := blockSize - len(data)%blockSize
+	padtext := make([]byte, padding)
+	for i := range padtext {
+		padtext[i] = byte(padding)
+	}
+	return append(data, padtext...)
+}
+
+// AESEncrypt AES-CBC加密
+func AESEncrypt(origData, key []byte) ([]byte, error) {
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, err
+	}
+
+	// 使用密钥的前16字节作为IV
+	iv := key[:16]
+
+	// PKCS7填充
+	blockSize := block.BlockSize()
+	origData = PKCS7Padding_1(origData, blockSize)
+
+	// CBC模式加密
+	mode := cipher.NewCBCEncrypter(block, iv)
+	crypted := make([]byte, len(origData))
+	mode.CryptBlocks(crypted, origData)
+
+	return crypted, nil
+}
+
+// GenerateSign 生成签名
+func GenerateSign(data, appSecret string) (string, error) {
+	key := []byte(appSecret)
+	plaintext := []byte(data)
+
+	ciphertext, err := AESEncrypt(plaintext, key)
+	if err != nil {
+		return "", err
+	}
+
+	// 转换为十六进制字符串
+	hexStr := hex.EncodeToString(ciphertext)
+
+	return hexStr, nil
+}