优化结构

pkg/paymentkit/signing.go

@@ -11,26 +11,6 @@ import (
 	"strings"
 )
 
-func WechatV2Sign(values map[string]string, key, signType string) string {
-	keys := make([]string, 0, len(values))
-	for k, v := range values {
-		if k != "sign" && v != "" {
-			keys = append(keys, k)
-		}
-	}
-	sort.Strings(keys)
-	parts := make([]string, 0, len(keys))
-	for _, k := range keys {
-		parts = append(parts, k+"="+values[k])
-	}
-	raw := strings.Join(parts, "&") + "&key=" + key
-	if strings.EqualFold(signType, "HMAC-SHA256") {
-		return HMACSHA256Hex([]byte(raw), key, true)
-	}
-	sum := md5.Sum([]byte(raw))
-	return strings.ToUpper(hex.EncodeToString(sum[:]))
-}
-
 func MD5Canonical(values map[string]any, secret string) string {
 	keys := make([]string, 0, len(values))
 	for key, value := range values {