add：生成签名

lib/lib.go

@@ -1,6 +1,9 @@
 package lib
 
 import (
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/hex"
 	"encoding/json"
 	"fmt"
 	"github.com/beego/beego/v2/server/web/context"
@@ -497,7 +500,7 @@ func IntListCompare(list1, list2 []int) (isEqual bool, common, onlyList1, onlyLi
 				onlyList1 = append(onlyList1, a)
 			}
 		}
-		
+
 	}
 
 	isEqual = true
@@ -510,4 +513,12 @@ func ChunkBy[T any](list []T, size int) [][]T {
 		list, chunks = list[size:], append(chunks, list[0:size:size])
 	}
 	return append(chunks, list)
-}
+}
+
+func GenSignature(apiKey, apiSecret, timestamp string) (signature string) {
+	// 计算签名，签名内容是 "apiKey + timestamp"
+	message := apiKey + timestamp
+	mac := hmac.New(sha256.New, []byte(apiSecret))
+	mac.Write([]byte(message))
+	return hex.EncodeToString(mac.Sum(nil))
+}