diff --git a/hapsigntool_cpp/codesigning/sign/src/verify_code_signature.cpp b/hapsigntool_cpp/codesigning/sign/src/verify_code_signature.cpp
index 91a1215b821d21864ab731ff04fb8c6d4feeea76..9f76a8f5e4f36d40e419c54f8c35d38694377355 100644
--- a/hapsigntool_cpp/codesigning/sign/src/verify_code_signature.cpp
+++ b/hapsigntool_cpp/codesigning/sign/src/verify_code_signature.cpp
@@ -21,9 +21,12 @@ namespace SignatureTools {
 bool VerifyCodeSignature::VerifyHap(std::string file, int64_t offset, int64_t length,
                                     std::string fileFormat, std::string profileContent)
 {
+    std::string fileFromatTmp = fileFormat;
+    std::transform(fileFromatTmp.begin(), fileFromatTmp.end(), fileFromatTmp.begin(), ::tolower);
     if (std::find(CodeSigning::SUPPORT_FILE_FORM.begin(), CodeSigning::SUPPORT_FILE_FORM.end(),
-        fileFormat) == CodeSigning::SUPPORT_FILE_FORM.end()) {
-        SIGNATURE_TOOLS_LOGI("Not hap, hsp or hqf file, skip code signing verify, file type: %s", fileFormat.c_str());
+        fileFromatTmp) == CodeSigning::SUPPORT_FILE_FORM.end()) {
+        SIGNATURE_TOOLS_LOGI("Not hap, hsp or hqf file, skip code signing verify, file type: %s",
+            fileFromatTmp.c_str());
         return true;
     }
     // 1) generate CodeSignBlock
diff --git a/hapsigntool_cpp/hap/provider/src/sign_provider.cpp b/hapsigntool_cpp/hap/provider/src/sign_provider.cpp
index 14ea2eb5720a0cc7f52caba12dd6d2622fc3ac72..64327903c2fb3351408e6175965d93d6d9f7f1d3 100644
--- a/hapsigntool_cpp/hap/provider/src/sign_provider.cpp
+++ b/hapsigntool_cpp/hap/provider/src/sign_provider.cpp
@@ -20,6 +20,7 @@
 #include <cstdio>
 #include <cinttypes>
 #include <filesystem>
+#include <algorithm>
 
 #include "nlohmann/json.hpp"
 #include "string_utils.h"
@@ -348,9 +349,11 @@ bool SignProvider::AppendCodeSignBlock(SignerConfig* signerConfig, std::string o
 {
     if (signParams.at(ParamConstants::PARAM_SIGN_CODE) == CodeSigning::ENABLE_SIGN_CODE_VALUE) {
         SIGNATURE_TOOLS_LOGI("start code signing.");
+        std::string suffixTmp = suffix;
+        std::transform(suffixTmp.begin(), suffixTmp.end(), suffixTmp.begin(), ::tolower);
         if (std::find(CodeSigning::SUPPORT_FILE_FORM.begin(), CodeSigning::SUPPORT_FILE_FORM.end(),
-                      suffix) == CodeSigning::SUPPORT_FILE_FORM.end()) {
-            SIGNATURE_TOOLS_LOGI("no need to sign code for %s", suffix.c_str());
+                      suffixTmp) == CodeSigning::SUPPORT_FILE_FORM.end()) {
+            SIGNATURE_TOOLS_LOGI("no need to sign code for %s", suffixTmp.c_str());
             return true;
         }
         // 4 means hap format occupy 4 byte storage location,2 means optional blocks reserve 2 storage location
@@ -358,7 +361,7 @@ bool SignProvider::AppendCodeSignBlock(SignerConfig* signerConfig, std::string o
         // create CodeSigning Object
         CodeSigning codeSigning(signerConfig);
         std::vector<int8_t> codeSignArray;
-        if (!codeSigning.GetCodeSignBlock(outputFilePath, codeSignOffset, suffix, profileContent, zip,
+        if (!codeSigning.GetCodeSignBlock(outputFilePath, codeSignOffset, suffixTmp, profileContent, zip,
                                           codeSignArray)) {
             SIGNATURE_TOOLS_LOGE("Codesigning getCodeSignBlock Fail.");
             return false;
diff --git a/hapsigntool_cpp/hap/verify/src/verify_hap.cpp b/hapsigntool_cpp/hap/verify/src/verify_hap.cpp
index 3c9ff687ce4f5ea7033156bf258e467d2806ac40..8e2c070712f7f3c896c83e98ea8886ce6d6a9116 100644
--- a/hapsigntool_cpp/hap/verify/src/verify_hap.cpp
+++ b/hapsigntool_cpp/hap/verify/src/verify_hap.cpp
@@ -17,6 +17,7 @@
 #include <regex>
 #include <unordered_map>
 #include <vector>
+#include <algorithm>
 
 #include "securec.h"
 #include "hap_signer_block_utils.h"
@@ -168,10 +169,13 @@ bool VerifyHap::CheckFilePath(const std::string& filePath, std::string& standard
         return false;
     }
     standardFilePath = std::string(path);
-    bool ret = (!std::regex_match(standardFilePath, std::regex(HAP_APP_PATTERN)) &&
-                !std::regex_match(standardFilePath, std::regex(HSP_APP_PATTERN)) &&
-                !std::regex_match(standardFilePath, std::regex(APP_APP_PATTERN)) &&
-                !std::regex_match(standardFilePath, std::regex(HQF_APP_PATTERN)));
+    std::string standardFilePathTmp = std::string(path);
+    std::transform(standardFilePathTmp.begin(), standardFilePathTmp.end(), standardFilePathTmp.begin(),
+                   [](unsigned char c) { return std::tolower(c); });
+    bool ret = (!std::regex_match(standardFilePathTmp, std::regex(HAP_APP_PATTERN)) &&
+                !std::regex_match(standardFilePathTmp, std::regex(HSP_APP_PATTERN)) &&
+                !std::regex_match(standardFilePathTmp, std::regex(APP_APP_PATTERN)) &&
+                !std::regex_match(standardFilePathTmp, std::regex(HQF_APP_PATTERN)));
     if (ret) {
         PrintErrorNumberMsg("COMMAND_PARAM_ERROR", COMMAND_PARAM_ERROR,
                             "only support format is [hap, hqf, hsp, app]");