diff --git a/hapsigntool_cpp/codesigning/sign/include/code_signing.h b/hapsigntool_cpp/codesigning/sign/include/code_signing.h
index 7bf8f771f5e139516c026c4fb1a0351e56ecbfa2..a9aece49b7ddbb24211d6e12318f2d26b9177125 100644
--- a/hapsigntool_cpp/codesigning/sign/include/code_signing.h
+++ b/hapsigntool_cpp/codesigning/sign/include/code_signing.h
@@ -66,7 +66,7 @@ public:
     bool GetSingleFileStreamFromZip(unzFile& zFile, char fileName[],
                                     unz_file_info& zFileInfo,
                                     int& readFileSize, std::stringbuf& sb);
-    bool RunParseZipInfo(const std::string& packageName, UnzipHandleParam& param, uLong index);
+    bool RunParseZipInfo(const std::string& packageName, UnzipHandleParam& param, unz_file_pos pos);
     bool GenerateSignature(const std::vector<int8_t>& signedData, const std::string&,
                            std::vector<int8_t>&);
     int64_t m_timestamp = 0;
diff --git a/hapsigntool_cpp/codesigning/sign/src/code_signing.cpp b/hapsigntool_cpp/codesigning/sign/src/code_signing.cpp
index fb9afde87dd3194e88f7a4ab1b2a1e82e9383dfa..f3ca4ff7bb25536bc5a8c7772dce10d45a1c6622 100644
--- a/hapsigntool_cpp/codesigning/sign/src/code_signing.cpp
+++ b/hapsigntool_cpp/codesigning/sign/src/code_signing.cpp
@@ -313,20 +313,17 @@ bool CodeSigning::GetSingleFileStreamFromZip(unzFile &zFile, char fileName[],
     return true;
 }
 
-bool CodeSigning::RunParseZipInfo(const std::string& packageName, UnzipHandleParam& param, uLong index)
+bool CodeSigning::RunParseZipInfo(const std::string& packageName, UnzipHandleParam& param, unz_file_pos pos)
 {
     unzFile zFile = unzOpen(packageName.c_str());
     if (zFile == NULL) {
         PrintErrorNumberMsg("IO_ERROR", IO_ERROR, "zlib open file: " + packageName + " failed.");
         return false;
     }
-    for (uLong i = 0; i < index; ++i) {
-        int ret = unzGoToNextFile(zFile);
-        if (ret != UNZ_OK) {
-            PrintErrorNumberMsg("SIGN_ERROR", SIGN_ERROR, "zlib go to next file failed.");
-            unzClose(zFile);
-            return false;
-        }
+    if (unzGoToFilePos(zFile, &pos) != UNZ_OK) {
+        PrintErrorNumberMsg("SIGN_ERROR", SIGN_ERROR, "zlib go to file failed.");
+        unzClose(zFile);
+        return false;
     }
     unz_file_info zFileInfo;
     char fileName[FILE_NAME_SIZE];
@@ -377,8 +374,13 @@ bool CodeSigning::HandleZipGlobalInfo(const std::string& packageName, unzFile& z
             return false;
         }
         if (CheckFileName(fileName, &nameLen)) {
+            unz_file_pos pos;
+            if (unzGetFilePos(zFile, &pos) != UNZ_OK) {
+                SIGNATURE_TOOLS_LOGE("unzGetFilePos failed, fileName = %s", fileName);
+                return false;
+            }
             thread_results.push_back(mPools->Enqueue(&CodeSigning::RunParseZipInfo, this,
-                std::ref(packageName), std::ref(param), i));
+                std::ref(packageName), std::ref(param), pos));
         }
         if (i != zGlobalInfo.number_entry - 1) {
             int ret = unzGoToNextFile(zFile);