diff --git a/common_lib/impl/src/json_utils.c b/common_lib/impl/src/json_utils.c
index f6887bbc41985e6b65f0759d5ec47ef738b85131..a62c483326f75037c36d9978a8b14c0d036044bb 100644
--- a/common_lib/impl/src/json_utils.c
+++ b/common_lib/impl/src/json_utils.c
@@ -101,7 +101,7 @@ void DeleteAllItemExceptOne(CJson *jsonObj, const char *key)
     CJson *nextItem = NULL;
     while (curItem != NULL) {
         nextItem = curItem->next;
-        if (!IsStrEqual(key, curItem->string)) {
+        if (HcStrcmp(key, curItem->string) != 0) {
             cJSON_Delete(cJSON_DetachItemViaPointer(jsonObj, curItem));
         }
         curItem = nextItem;
diff --git a/common_lib/impl/src/string_util.c b/common_lib/impl/src/string_util.c
index a0ee6f8aa69891c6340b5bb31599afc947191073..421ee94b7fa8bee1c8c32bd091553a123beca20d 100644
--- a/common_lib/impl/src/string_util.c
+++ b/common_lib/impl/src/string_util.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2021 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -174,11 +174,10 @@ int32_t GetAnonymousString(const char *originStr, char *anonymousStr, uint32_t a
     return CLIB_SUCCESS;
 }
 
-bool IsStrEqual(const char *str1, const char *str2)
+int HcStrcmp(const char *str1, const char *str2)
 {
     if (str1 == NULL || str2 == NULL) {
-        return false;
+        return CLIB_FAILED;
     }
-
-    return strcmp(str1, str2) == 0;
+    return strcmp(str1, str2);
 }
\ No newline at end of file
diff --git a/common_lib/interfaces/string_util.h b/common_lib/interfaces/string_util.h
index d199c9382cc76d7a2b99b9798caae9e9d56356c4..41d03dff3b71b23d637bdf735710e20c7a7804d8 100644
--- a/common_lib/interfaces/string_util.h
+++ b/common_lib/interfaces/string_util.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2021 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -97,9 +97,9 @@ int32_t GetAnonymousString(const char *originStr, char *anonymousStr, uint32_t a
  * Safe compare two strings.
  * @param str1: the first string.
  * @param str2: the second string.
- * @return false if str1 or str2 is NULL else return strcmp(str1, str2) == 0.
+ * @return if str1 or str2 is NULL return CLIB_FAILED(-1), else return strcmp(str1, str2).
  */
-bool IsStrEqual(const char *str1, const char *str2);
+int HcStrcmp(const char *str1, const char *str2);
 
 #ifdef __cplusplus
 }
diff --git a/deps_adapter/os_adapter/impl/src/linux/hc_file.c b/deps_adapter/os_adapter/impl/src/linux/hc_file.c
index 5eb4d8ea9d6b0dcaf7fd8f6210bca61a64c015fa..51fc83b58cf2449d2486aa5f89bbb0a92a053f67 100644
--- a/deps_adapter/os_adapter/impl/src/linux/hc_file.c
+++ b/deps_adapter/os_adapter/impl/src/linux/hc_file.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2021-2023 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -201,7 +201,7 @@ void HcFileGetSubFileName(const char *path, StringVector *nameVec)
         return;
     }
     while ((entry = readdir(dir)) != NULL) {
-        if (IsStrEqual(entry->d_name, ".") || IsStrEqual(entry->d_name, "..")) {
+        if ((HcStrcmp(entry->d_name, ".") == 0) || (HcStrcmp(entry->d_name, "..") == 0)) {
             continue;
         }
         HcString subFileName = CreateString();
diff --git a/deps_adapter/os_adapter/impl/src/liteos/mini/hc_file_posix.c b/deps_adapter/os_adapter/impl/src/liteos/mini/hc_file_posix.c
index b6141bbf1c1d8b34fd1bd2c10e86266da2f2af93..7df252a9308018c173daf866b677fd5d84bb7497 100644
--- a/deps_adapter/os_adapter/impl/src/liteos/mini/hc_file_posix.c
+++ b/deps_adapter/os_adapter/impl/src/liteos/mini/hc_file_posix.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2022-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2022 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -202,7 +202,7 @@ void HcFileGetSubFileName(const char *path, StringVector *nameVec)
         return;
     }
     while ((entry = readdir(dir)) != NULL) {
-        if (IsStrEqual(entry->d_name, ".") || IsStrEqual(entry->d_name, "..")) {
+        if ((HcStrcmp(entry->d_name, ".") == 0) || (HcStrcmp(entry->d_name, "..") == 0)) {
             continue;
         }
         HcString subFileName = CreateString();
diff --git a/frameworks/sdk/sa_load_on_demand/src/sa_load_on_demand.cpp b/frameworks/sdk/sa_load_on_demand/src/sa_load_on_demand.cpp
index 81686260d7fb3dc7b9455d79eb7cacd0bf637bd2..34676e27f910db8f5befad9d8067925bf096f732 100644
--- a/frameworks/sdk/sa_load_on_demand/src/sa_load_on_demand.cpp
+++ b/frameworks/sdk/sa_load_on_demand/src/sa_load_on_demand.cpp
@@ -189,7 +189,7 @@ static bool UpdateCallbackInfoIfExist(const char *appId, const DeviceAuthCallbac
         if (entry == nullptr || entry->appId == nullptr) {
             continue;
         }
-        if (IsStrEqual(entry->appId, appId) && entry->callbackType == callbackType) {
+        if (HcStrcmp(entry->appId, appId) == 0 && entry->callbackType == callbackType) {
             LOGI("[SDK]:start to update callback, appId: %" LOG_PUB "s, callbackType: %" LOG_PUB "d",
                 appId, callbackType);
             bool ret = UpdateCallback(entry, callback, dataChangeListener, listener, index);
@@ -287,7 +287,7 @@ int32_t RemoveCallbackInfoFromList(const char *appId, int32_t callbackType)
         if (entry == nullptr || entry->appId == nullptr) {
             continue;
         }
-        if (IsStrEqual(entry->appId, appId) && entry->callbackType == callbackType) {
+        if (HcStrcmp(entry->appId, appId) == 0 && entry->callbackType == callbackType) {
             LOGW("[SDK]: start to remove callbackInfo.");
             DevAuthCallbackInfo deleteCallbackInfo;
             HC_VECTOR_POPELEMENT(&g_devAuthCallbackList, &deleteCallbackInfo, index);
diff --git a/frameworks/src/lite/ipc_adapt.c b/frameworks/src/lite/ipc_adapt.c
index 5647dbcce7934e4ee88db59125979b271c6dd07f..8f9f815b5f849acb9d86f27586d998d03af880a9 100644
--- a/frameworks/src/lite/ipc_adapt.c
+++ b/frameworks/src/lite/ipc_adapt.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2021 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -153,13 +153,15 @@ void ResetIpcCallBackNodeByNodeId(int32_t nodeIdx)
 static IpcCallBackNode *GetIpcCallBackByAppId(const char *appId, int32_t type)
 {
     int32_t i;
+    int32_t ret;
 
     LOGI("appid: %" LOG_PUB "s", appId);
     for (i = 0; i < IPC_CALL_BACK_MAX_NODES; i++) {
         if (g_ipcCallBackList.ctx[i].appId[0] == 0) {
             continue;
         }
-        if (IsStrEqual(g_ipcCallBackList.ctx[i].appId, appId) && (g_ipcCallBackList.ctx[i].cbType == type)) {
+        ret = HcStrcmp(g_ipcCallBackList.ctx[i].appId, appId);
+        if ((ret == 0) && (g_ipcCallBackList.ctx[i].cbType == type)) {
             return &g_ipcCallBackList.ctx[i];
         }
     }
diff --git a/frameworks/src/standard/ipc_adapt.cpp b/frameworks/src/standard/ipc_adapt.cpp
index 3349f5c119d473547afa923ca79230e0d12cbfc0..fda7d5082b98feeb5139a9d42fd25e642bec778f 100644
--- a/frameworks/src/standard/ipc_adapt.cpp
+++ b/frameworks/src/standard/ipc_adapt.cpp
@@ -155,12 +155,14 @@ void ResetIpcCallBackNodeByNodeId(int32_t nodeIdx)
 static IpcCallBackNode *GetIpcCallBackByAppId(const char *appId, int32_t type)
 {
     int32_t i;
+    int32_t ret;
 
     for (i = 0; i < IPC_CALL_BACK_MAX_NODES; i++) {
         if (g_ipcCallBackList.ctx[i].appId[0] == 0) {
             continue;
         }
-        if (IsStrEqual(g_ipcCallBackList.ctx[i].appId, appId) && (g_ipcCallBackList.ctx[i].cbType == type)) {
+        ret = HcStrcmp(g_ipcCallBackList.ctx[i].appId, appId);
+        if ((ret == 0) && (g_ipcCallBackList.ctx[i].cbType == type)) {
             return &g_ipcCallBackList.ctx[i];
         }
     }
diff --git a/services/data_manager/cred_data_manager/src/credential_data_manager.c b/services/data_manager/cred_data_manager/src/credential_data_manager.c
index 68b037dc8541436fbb0964a5718ba2d2b5d7bfd1..580441af8b2745754362dc4733a5330a82bd9816 100644
--- a/services/data_manager/cred_data_manager/src/credential_data_manager.c
+++ b/services/data_manager/cred_data_manager/src/credential_data_manager.c
@@ -535,7 +535,7 @@ static void LoadDevAuthCredDb(void)
         if (osAccountIdStr == NULL) {
             continue;
         }
-        if (IsStrEqual(osAccountIdStr, "hccredential.dat")) {
+        if (HcStrcmp(osAccountIdStr, "hccredential.dat") == 0) {
             LoadOsAccountCredDb(DEFAULT_OS_ACCOUNT);
         } else if (sscanf_s(osAccountIdStr, "hccredential%d.dat", &osAccountId) == 1) {
             LoadOsAccountCredDb(osAccountId);
@@ -638,20 +638,20 @@ static bool SaveCredInfoToParcel(const OsAccountCredInfo *info, HcParcel *parcel
 
 static bool CompareStringParams(const QueryCredentialParams *params, const Credential *entry)
 {
-    if ((params->deviceId != NULL) && (!IsStrEqual(params->deviceId, StringGet(&entry->deviceId)))) {
+    if ((params->deviceId != NULL) && (HcStrcmp(params->deviceId, StringGet(&entry->deviceId)) != 0)) {
         return false;
     }
-    if ((params->credOwner != NULL) && (!IsStrEqual(params->credOwner, StringGet(&entry->credOwner)))) {
+    if ((params->credOwner != NULL) && (HcStrcmp(params->credOwner, StringGet(&entry->credOwner)) != 0)) {
         return false;
     }
-    if ((params->userId != NULL) && (!IsStrEqual(params->userId, StringGet(&entry->userId)))) {
+    if ((params->userId != NULL) && (HcStrcmp(params->userId, StringGet(&entry->userId)) != 0)) {
         return false;
     }
-    if ((params->credId != NULL) && (!IsStrEqual(params->credId, StringGet(&entry->credId)))) {
+    if ((params->credId != NULL) && (HcStrcmp(params->credId, StringGet(&entry->credId)) != 0)) {
         return false;
     }
     if ((params->peerUserSpaceId != NULL) &&
-        (!IsStrEqual(params->peerUserSpaceId, StringGet(&entry->peerUserSpaceId)))) {
+        (HcStrcmp(params->peerUserSpaceId, StringGet(&entry->peerUserSpaceId)) != 0)) {
         return false;
     }
     return true;
diff --git a/services/data_manager/group_data_manager/src/group_data_manager.c b/services/data_manager/group_data_manager/src/group_data_manager.c
index ea8be9cbcf01906b2ca5dfbb090990755da80ce2..4198d3d8832a585697cdb499a48a7783dbc03255 100644
--- a/services/data_manager/group_data_manager/src/group_data_manager.c
+++ b/services/data_manager/group_data_manager/src/group_data_manager.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2022-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2022-2023 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -772,7 +772,7 @@ static void LoadDeviceAuthDb(void)
             LOGW("[DB]: Invalid osAccountIdStr!");
             continue;
         }
-        if (IsStrEqual(osAccountIdStr, "hcgroup.dat")) {
+        if (HcStrcmp(osAccountIdStr, "hcgroup.dat") == 0) {
             LoadOsAccountDb(DEFAULT_OS_ACCOUNT);
         } else if (sscanf_s(osAccountIdStr, "hcgroup%d.dat", &osAccountId) == 1) {
             LoadOsAccountDb(osAccountId);
@@ -912,16 +912,16 @@ static bool SaveInfoToParcel(const OsAccountTrustedInfo *info, HcParcel *parcel)
 
 static bool CompareQueryGroupParams(const QueryGroupParams *params, const TrustedGroupEntry *entry)
 {
-    if ((params->groupId != NULL) && (!IsStrEqual(params->groupId, StringGet(&entry->id)))) {
+    if ((params->groupId != NULL) && (HcStrcmp(params->groupId, StringGet(&entry->id)) != 0)) {
         return false;
     }
-    if ((params->groupName != NULL) && (!IsStrEqual(params->groupName, StringGet(&entry->name)))) {
+    if ((params->groupName != NULL) && (HcStrcmp(params->groupName, StringGet(&entry->name)) != 0)) {
         return false;
     }
-    if ((params->userId != NULL) && (!IsStrEqual(params->userId, StringGet(&entry->userId)))) {
+    if ((params->userId != NULL) && (HcStrcmp(params->userId, StringGet(&entry->userId)) != 0)) {
         return false;
     }
-    if ((params->sharedUserId != NULL) && (!IsStrEqual(params->sharedUserId, StringGet(&entry->sharedUserId)))) {
+    if ((params->sharedUserId != NULL) && (HcStrcmp(params->sharedUserId, StringGet(&entry->sharedUserId)) != 0)) {
         return false;
     }
     if ((params->groupType != ALL_GROUP) && (params->groupType != entry->type)) {
@@ -932,7 +932,7 @@ static bool CompareQueryGroupParams(const QueryGroupParams *params, const Truste
     }
     if (params->ownerName != NULL) {
         HcString entryOwner = HC_VECTOR_GET(&entry->managers, 0);
-        if (!IsStrEqual(params->ownerName, StringGet(&entryOwner))) {
+        if (HcStrcmp(params->ownerName, StringGet(&entryOwner)) != 0) {
             return false;
         }
     }
@@ -941,16 +941,16 @@ static bool CompareQueryGroupParams(const QueryGroupParams *params, const Truste
 
 static bool CompareQueryDeviceParams(const QueryDeviceParams *params, const TrustedDeviceEntry *entry)
 {
-    if ((params->groupId != NULL) && (!IsStrEqual(params->groupId, StringGet(&entry->groupId)))) {
+    if ((params->groupId != NULL) && (HcStrcmp(params->groupId, StringGet(&entry->groupId)) != 0)) {
         return false;
     }
-    if ((params->udid != NULL) && (!IsStrEqual(params->udid, StringGet(&entry->udid)))) {
+    if ((params->udid != NULL) && (HcStrcmp(params->udid, StringGet(&entry->udid)) != 0)) {
         return false;
     }
-    if ((params->authId != NULL) && (!IsStrEqual(params->authId, StringGet(&entry->authId)))) {
+    if ((params->authId != NULL) && (HcStrcmp(params->authId, StringGet(&entry->authId)) != 0)) {
         return false;
     }
-    if ((params->userId != NULL) && (!IsStrEqual(params->userId, StringGet(&entry->userId)))) {
+    if ((params->userId != NULL) && (HcStrcmp(params->userId, StringGet(&entry->userId)) != 0)) {
         return false;
     }
     return true;
@@ -1194,7 +1194,7 @@ static bool IsSelfDeviceEntry(const TrustedDeviceEntry *deviceEntry)
         LOGE("The entryUdid is NULL!");
         return false;
     }
-    return IsStrEqual(selfUdid, entryUdid);
+    return HcStrcmp(selfUdid, entryUdid) == 0;
 }
 
 static int32_t GenerateMessageWithOsAccount(const TrustedGroupEntry *groupEntry, int32_t osAccountId,
diff --git a/services/frameworks/src/hiview_adapter/hidump_adapter.c b/services/frameworks/src/hiview_adapter/hidump_adapter.c
index e1eb7658beed8635367941c94aec44c6affc7545..bba153b88395c1a7fd79294899487abad81b6f5f 100644
--- a/services/frameworks/src/hiview_adapter/hidump_adapter.c
+++ b/services/frameworks/src/hiview_adapter/hidump_adapter.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2022-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2022-2023 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -25,7 +25,7 @@ static PerformanceDumpCallBack g_performDumpCallback = NULL;
 static void DumpByArgs(int fd, StringVector *strArgVec)
 {
     HcString strArg = strArgVec->get(strArgVec, 0);
-    if (IsStrEqual(StringGet(&strArg), PERFORM_DUMP_ARG)) {
+    if (HcStrcmp(StringGet(&strArg), PERFORM_DUMP_ARG) == 0) {
         if (g_performDumpCallback != NULL) {
             g_performDumpCallback(fd, strArgVec);
         }
diff --git a/services/frameworks/src/hiview_adapter/performance_dumper.c b/services/frameworks/src/hiview_adapter/performance_dumper.c
index 8b883fb1d9749a90b90437d44c8749f4f71f5f74..fab6b25280d48641e130c652fb1bb0c7d94b162b 100644
--- a/services/frameworks/src/hiview_adapter/performance_dumper.c
+++ b/services/frameworks/src/hiview_adapter/performance_dumper.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2023-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2023 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -362,10 +362,10 @@ static void PerformanceDump(int fd, StringVector *strArgVec)
         return;
     }
     HcString strArg = strArgVec->get(strArgVec, 1);
-    if (IsStrEqual(StringGet(&strArg), ENABLE_PERFORMANCE_DUMPER)) {
+    if (HcStrcmp(StringGet(&strArg), ENABLE_PERFORMANCE_DUMPER) == 0) {
         g_isPerformDumpEnabled = true;
         dprintf(fd, "performance dumper is enabled!\n");
-    } else if (IsStrEqual(StringGet(&strArg), DISABLE_PERFORMANCE_DUMPER)) {
+    } else if (HcStrcmp(StringGet(&strArg), DISABLE_PERFORMANCE_DUMPER) == 0) {
         ClearPerformDataVec();
         g_isPerformDumpEnabled = false;
         dprintf(fd, "performance dumper is disabled!\n");
diff --git a/services/frameworks/src/security_label_adapter/security_label_adapter.c b/services/frameworks/src/security_label_adapter/security_label_adapter.c
index 11e62aeadb85b14f1510f6e15913f2b90237513c..2ee21b2fe90f8424e6222dc130053c230e72ffe6 100644
--- a/services/frameworks/src/security_label_adapter/security_label_adapter.c
+++ b/services/frameworks/src/security_label_adapter/security_label_adapter.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2023-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2023 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -51,7 +51,7 @@ static bool IsSetLabelNeeded(const char *filePath, const char *labelToSet)
     if (GetSecurityLabel(filePath, &existLabel) != HC_SUCCESS) {
         return true;
     }
-    if (!IsStrEqual(existLabel, labelToSet)) {
+    if (HcStrcmp(existLabel, labelToSet) != 0) {
         LOGI("Incorrect security level, need to reset.");
         HcFree(existLabel);
         return true;
diff --git a/services/identity_service/listener/src/cred_listener.c b/services/identity_service/listener/src/cred_listener.c
index 1cd558fc5c10b21c52b4cff6575b60bbd52a3b72..2d881227954485ca7b9ef7dc7167a0eacc1ef95a 100644
--- a/services/identity_service/listener/src/cred_listener.c
+++ b/services/identity_service/listener/src/cred_listener.c
@@ -101,7 +101,7 @@ static int32_t UpdateListenerIfExist(const char *appId, const CredChangeListener
     (void)LockHcMutex(g_credListenerMutex);
     CredListenerEntry *entry = NULL;
     FOR_EACH_HC_VECTOR(g_credListenerVec, index, entry) {
-        if (IsStrEqual(entry->appId, appId)) {
+        if (HcStrcmp(entry->appId, appId) == 0) {
             if (memcpy_s(entry->listener, sizeof(CredChangeListener),
                 listener, sizeof(CredChangeListener)) != IS_SUCCESS) {
                 UnlockHcMutex(g_credListenerMutex);
@@ -223,7 +223,7 @@ int32_t RemoveCredListener(const char *appId)
     uint32_t index;
     CredListenerEntry *entry = NULL;
     FOR_EACH_HC_VECTOR(g_credListenerVec, index, entry) {
-        if (entry != NULL && IsStrEqual(entry->appId, appId)) {
+        if (entry != NULL && HcStrcmp(entry->appId, appId) == 0) {
             HcFree(entry->appId);
             HcFree(entry->listener);
             CredListenerEntry tempEntry;
diff --git a/services/identity_service/src/identity_operation.c b/services/identity_service/src/identity_operation.c
index 04fe43c8d24e3125cd02689a5e52fc9f3f5581ee..c5601c0a69b414d3082978269569927c70a1fffc 100644
--- a/services/identity_service/src/identity_operation.c
+++ b/services/identity_service/src/identity_operation.c
@@ -581,7 +581,7 @@ static int32_t SetIssuer(Credential *credential, CJson *json)
 static int32_t SetDeviceId(Credential *credential, CJson *json)
 {
     const char *deviceId = GetStringFromJson(json, FIELD_DEVICE_ID);
-    if (deviceId == NULL || IsStrEqual(deviceId, "")) {
+    if (deviceId == NULL || HcStrcmp(deviceId, "") == 0) {
         LOGE("Failed to get deviceId from credReqParam");
         return IS_ERR_JSON_GET;
     }
@@ -595,7 +595,7 @@ static int32_t SetDeviceId(Credential *credential, CJson *json)
 static int32_t SetCredOwner(Credential *credential, CJson *json)
 {
     const char *credOwner = GetStringFromJson(json, FIELD_CRED_OWNER);
-    if (credOwner == NULL || IsStrEqual(credOwner, "")) {
+    if (credOwner == NULL || HcStrcmp(credOwner, "") == 0) {
         LOGE("Failed to get credOwner from credReqParam");
         return IS_ERR_JSON_GET;
     }
@@ -624,7 +624,7 @@ static int32_t SetProofType(Credential *credential, CJson *json)
 static int32_t SetUserId(Credential *credential, CJson *json)
 {
     const char *userId = GetStringFromJson(json, FIELD_USER_ID);
-    if (credential->credType == ACCOUNT_RELATED && (userId == NULL || IsStrEqual(userId, ""))) {
+    if (credential->credType == ACCOUNT_RELATED && (userId == NULL || HcStrcmp(userId, "") == 0)) {
         LOGE("Invalid params, when credType is account, userId is NULL");
         return IS_ERR_INVALID_PARAMS;
     }
@@ -675,7 +675,7 @@ static int32_t SetPeerUserSpaceId(Credential *credential, CJson *json, uint8_t m
 {
     const char *peerUserSpaceId = GetStringFromJson(json, FIELD_PEER_USER_SPACE_ID);
     if (credential->credType == ACCOUNT_UNRELATED && method == METHOD_IMPORT &&
-        (peerUserSpaceId == NULL || IsStrEqual(peerUserSpaceId, ""))) {
+        (peerUserSpaceId == NULL || HcStrcmp(peerUserSpaceId, "") == 0)) {
         LOGE("Invalid params, when credType is not account and method is import, peer osaccount id is NULL");
         return IS_ERR_INVALID_PARAMS;
     }
@@ -710,7 +710,7 @@ static int32_t SetAppList(Credential *credential, CJson *json)
 static int32_t SetExtendInfo(Credential *credential, CJson *json)
 {
     const char *extendInfo = GetStringFromJson(json, FIELD_EXTEND_INFO);
-    if (extendInfo == NULL || IsStrEqual(extendInfo, "")) {
+    if (extendInfo == NULL || HcStrcmp(extendInfo, "") == 0) {
         LOGW("Failed to get extendInfo from credReqParam");
     }
     if (extendInfo == NULL) {
@@ -1267,7 +1267,7 @@ int32_t SetRequiredParamsFromJson(QueryCredentialParams *queryParams, CJson *bas
         return IS_ERR_NOT_SUPPORT;
     }
     const char *credOwner = GetStringFromJson(baseInfoJson, FIELD_CRED_OWNER);
-    if (credOwner == NULL || IsStrEqual(credOwner, "")) {
+    if (credOwner == NULL || HcStrcmp(credOwner, "") == 0) {
         LOGE("Failed to set query params: credOwner");
         return IS_ERR_JSON_GET;
     }
@@ -1278,13 +1278,13 @@ int32_t SetRequiredParamsFromJson(QueryCredentialParams *queryParams, CJson *bas
 int32_t SetUpdateToQueryParams(CJson *json, QueryCredentialParams *queryParams)
 {
     const char *userId = GetStringFromJson(json, FIELD_USER_ID);
-    if (userId == NULL || IsStrEqual(userId, "")) {
+    if (userId == NULL || HcStrcmp(userId, "") == 0) {
         LOGE("Failed to set query params: userId");
         return IS_ERR_JSON_GET;
     }
     queryParams->userId = userId;
     const char *deviceId = GetStringFromJson(json, FIELD_DEVICE_ID);
-    if (deviceId == NULL || IsStrEqual(deviceId, "")) {
+    if (deviceId == NULL || HcStrcmp(deviceId, "") == 0) {
         LOGE("Failed to set query params: deviceId");
         return IS_ERR_JSON_GET;
     }
@@ -1303,7 +1303,7 @@ static int32_t EraseCredIdInVec(const char *credId, CredentialVec *credVec)
             continue;
         }
         const char *itemCredId = StringGet(&(*item)->credId);
-        if (itemCredId != NULL && IsStrEqual(credId, itemCredId)) {
+        if (itemCredId != NULL && HcStrcmp(credId, itemCredId) == 0) {
             credVec->eraseElement(credVec, item, index);
             return IS_SUCCESS;
         }
diff --git a/services/legacy/authenticators/src/account_related/creds_manager/asy_token_manager.c b/services/legacy/authenticators/src/account_related/creds_manager/asy_token_manager.c
index 4900785c613d785e9f51bd73ed2ead3911a1e8e1..b5baac0cb4098b8fd149789928498091dadcc14c 100644
--- a/services/legacy/authenticators/src/account_related/creds_manager/asy_token_manager.c
+++ b/services/legacy/authenticators/src/account_related/creds_manager/asy_token_manager.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2022-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2022-2023 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -617,8 +617,8 @@ static AccountToken **QueryTokenPtrIfMatch(const AccountTokenVec *vec, const cha
     uint32_t index;
     AccountToken **token;
     FOR_EACH_HC_VECTOR(*vec, index, token) {
-        if ((IsStrEqual(userId, (const char *)((*token)->pkInfo.userId.val))) &&
-            (IsStrEqual(deviceId, (const char *)((*token)->pkInfo.deviceId.val)))) {
+        if ((HcStrcmp(userId, (const char *)((*token)->pkInfo.userId.val)) == 0) &&
+            (HcStrcmp(deviceId, (const char *)((*token)->pkInfo.deviceId.val)) == 0)) {
             return token;
         }
     }
@@ -688,7 +688,7 @@ static int32_t DoExportPkAndCompare(int32_t osAccountId, const char *userId, con
         return ret;
     }
     UnlockHcMutex(g_accountDbMutex);
-    if (memcmp(devicePk, publicKeyVal, PK_SIZE) == 0) {
+    if (HcStrcmp((const char *)devicePk, (const char *)publicKeyVal) == 0) {
         HcFree(publicKeyVal);
         return HC_SUCCESS;
     }
@@ -756,7 +756,7 @@ static int32_t CheckUserId(const char *userId, const CJson *in)
         LOGE("Failed to get userIdFromPk");
         return HC_ERR_JSON_GET;
     }
-    if (IsStrEqual(userId, userIdFromPk)) {
+    if (HcStrcmp(userId, userIdFromPk) == 0) {
         return HC_SUCCESS;
     }
     return HC_ERROR;
@@ -1144,8 +1144,8 @@ static int32_t DeleteTokenInner(int32_t osAccountId, const char *userId, const c
     while (index < HC_VECTOR_SIZE(&info->tokens)) {
         token = info->tokens.getp(&info->tokens, index);
         if ((token == NULL) || (*token == NULL) ||
-            (!IsStrEqual(userId, (const char *)((*token)->pkInfo.userId.val))) ||
-            (!IsStrEqual(deviceId, (const char *)((*token)->pkInfo.deviceId.val)))) {
+            (HcStrcmp(userId, (const char *)((*token)->pkInfo.userId.val)) != 0) ||
+            (HcStrcmp(deviceId, (const char *)((*token)->pkInfo.deviceId.val)) != 0)) {
             index++;
             continue;
         }
@@ -1281,7 +1281,7 @@ static void LoadTokenDb(void)
         if (name == NULL) {
             continue;
         }
-        if (IsStrEqual(name, "account_data_asy.dat")) {
+        if (HcStrcmp(name, "account_data_asy.dat") == 0) {
             LoadOsAccountTokenDb(DEFAULT_OS_ACCOUNT);
         } else if (sscanf_s(name, "account_data_asy%d.dat", &osAccountId) == 1) {
             LoadOsAccountTokenDb(osAccountId);
diff --git a/services/legacy/authenticators/src/account_related/creds_manager/sym_token_manager.c b/services/legacy/authenticators/src/account_related/creds_manager/sym_token_manager.c
index 05ecbda8cbd1341fc9ab564a97ec414d962b2320..604d492cf72de17152105bb156cb00555995efc2 100644
--- a/services/legacy/authenticators/src/account_related/creds_manager/sym_token_manager.c
+++ b/services/legacy/authenticators/src/account_related/creds_manager/sym_token_manager.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2022-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2022-2023 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -57,7 +57,7 @@ static bool IsTokenMatch(const SymToken *token, const char *userId, const char *
         LOGE("deviceId is null!");
         return false;
     }
-    return (IsStrEqual(userId, token->userId)) && (IsStrEqual(deviceId, token->deviceId));
+    return (HcStrcmp(userId, token->userId) == 0) && (HcStrcmp(deviceId, token->deviceId) == 0);
 }
 
 static bool GetTokensFilePathCe(int32_t osAccountId, char *tokenPath, uint32_t pathBufferLen)
@@ -732,7 +732,7 @@ static void LoadTokenDb(void)
         if (name == NULL) {
             continue;
         }
-        if (IsStrEqual(name, "account_data_sym.dat")) {
+        if (HcStrcmp(name, "account_data_sym.dat") == 0) {
             LoadOsSymTokensDb(DEFAULT_OS_ACCOUNT);
         } else if (sscanf_s(name, "account_data_sym%d.dat", &osAccountId) == 1) {
             LoadOsSymTokensDb(osAccountId);
diff --git a/services/legacy/authenticators/src/account_unrelated/common/das_task_common.c b/services/legacy/authenticators/src/account_unrelated/common/das_task_common.c
index 9110e9f640dc3a71cab73b1224e46e0c5921c6f1..0d49c723436a27b47d5a1a92f33b12c997fdd745 100644
--- a/services/legacy/authenticators/src/account_unrelated/common/das_task_common.c
+++ b/services/legacy/authenticators/src/account_unrelated/common/das_task_common.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2021 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -218,7 +218,7 @@ static bool IsPeerDevice(const Uint8Buff *authId)
         HcFree(authIdStr);
         return false;
     }
-    bool isPeerDevice = !IsStrEqual(selfUdid, authIdStr);
+    bool isPeerDevice = HcStrcmp(selfUdid, authIdStr) != 0;
     HcFree(authIdStr);
     return isPeerDevice;
 }
diff --git a/services/legacy/authenticators/src/account_unrelated/das_task_main.c b/services/legacy/authenticators/src/account_unrelated/das_task_main.c
index e6607940036d38873111c1b2c90806f646672d20..6712115132a0766c26ecc0d51af7f7690bd8cb82 100644
--- a/services/legacy/authenticators/src/account_unrelated/das_task_main.c
+++ b/services/legacy/authenticators/src/account_unrelated/das_task_main.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2021-2023 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -98,7 +98,7 @@ static int CombineJson(CJson *desObj, const CJson *srcObj)
             return HC_ERR_NULL_PTR;
         }
         CJson *payload = GetObjFromJson(desObj, FIELD_PAYLOAD);
-        if (IsStrEqual(key, FIELD_PAYLOAD) && payload != NULL) {
+        if (HcStrcmp(key, FIELD_PAYLOAD) == 0 && payload != NULL) {
             res = CombineJson(payload, item);
             if (res != HC_SUCCESS) {
                 LOGE("Combine payload failed, res: %" LOG_PUB "x.", res);
diff --git a/services/legacy/group_manager/src/broadcast_manager/broadcast_manager.c b/services/legacy/group_manager/src/broadcast_manager/broadcast_manager.c
index 6c091fc3ee92c552133e5d0806e77eaa766b30a7..bbcb084413a1d1d0df3838ec447a43813d6fec9e 100644
--- a/services/legacy/group_manager/src/broadcast_manager/broadcast_manager.c
+++ b/services/legacy/group_manager/src/broadcast_manager/broadcast_manager.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2021-2022 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -162,7 +162,7 @@ static int32_t UpdateListenerIfExist(const char *appId, const DataChangeListener
     ListenerEntry *entry = NULL;
     (void)LockHcMutex(g_broadcastMutex);
     FOR_EACH_HC_VECTOR(g_listenerEntryVec, index, entry) {
-        if (IsStrEqual(entry->appId, appId)) {
+        if (HcStrcmp(entry->appId, appId) == 0) {
             if (memcpy_s(entry->listener, sizeof(DataChangeListener),
                 listener, sizeof(DataChangeListener)) != HC_SUCCESS) {
                 UnlockHcMutex(g_broadcastMutex);
@@ -297,7 +297,7 @@ int32_t RemoveListener(const char *appId)
     uint32_t index;
     ListenerEntry *entry = NULL;
     FOR_EACH_HC_VECTOR(g_listenerEntryVec, index, entry) {
-        if (IsStrEqual(entry->appId, appId)) {
+        if (HcStrcmp(entry->appId, appId) == 0) {
             HcFree(entry->appId);
             HcFree(entry->listener);
             ListenerEntry tempEntry;
diff --git a/services/legacy/group_manager/src/callback_manager/callback_manager.c b/services/legacy/group_manager/src/callback_manager/callback_manager.c
index cf9783ccf3258e500e70f5ac5cad70b09a2083ca..3f00d8fc7b4f9d5504a07de2a072e48c4b3e50d9 100644
--- a/services/legacy/group_manager/src/callback_manager/callback_manager.c
+++ b/services/legacy/group_manager/src/callback_manager/callback_manager.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2021 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -39,7 +39,7 @@ static int32_t UpdateCallbackIfExist(const char *appId, const DeviceAuthCallback
     CallbackEntry *entry = NULL;
     (void)LockHcMutex(g_callbackMutex);
     FOR_EACH_HC_VECTOR(g_callbackVec, index, entry) {
-        if (IsStrEqual(entry->appId, appId)) {
+        if (HcStrcmp(entry->appId, appId) == 0) {
             if (memcpy_s(entry->callback, sizeof(DeviceAuthCallback),
                 callback, sizeof(DeviceAuthCallback)) != EOK) {
                 UnlockHcMutex(g_callbackMutex);
@@ -164,7 +164,7 @@ const DeviceAuthCallback *GetGMCallbackByAppId(const char *appId)
     CallbackEntry *entry = NULL;
     (void)LockHcMutex(g_callbackMutex);
     FOR_EACH_HC_VECTOR(g_callbackVec, index, entry) {
-        if (IsStrEqual(entry->appId, appId)) {
+        if (HcStrcmp(entry->appId, appId) == 0) {
             UnlockHcMutex(g_callbackMutex);
             return entry->callback;
         }
@@ -196,7 +196,7 @@ int32_t UnRegGroupManagerCallback(const char *appId)
     CallbackEntry *entry = NULL;
     (void)LockHcMutex(g_callbackMutex);
     FOR_EACH_HC_VECTOR(g_callbackVec, index, entry) {
-        if (IsStrEqual(entry->appId, appId)) {
+        if (HcStrcmp(entry->appId, appId) == 0) {
             HcFree(entry->appId);
             HcFree(entry->callback);
             CallbackEntry tempEntry;
diff --git a/services/legacy/group_manager/src/group_operation/across_account_group/across_account_group.c b/services/legacy/group_manager/src/group_operation/across_account_group/across_account_group.c
index 24cd7f5723f23aab2c587b16efe3924dc0a93d04..bb9a5f0c95efe027980ba57947bc1897ca1f31b7 100644
--- a/services/legacy/group_manager/src/group_operation/across_account_group/across_account_group.c
+++ b/services/legacy/group_manager/src/group_operation/across_account_group/across_account_group.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2022-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2022 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -200,7 +200,7 @@ static int32_t AssertIdenticalGroupExist(int32_t osAccountId, const CJson *jsonP
     uint32_t index;
     TrustedGroupEntry **entry = NULL;
     FOR_EACH_HC_VECTOR(groupEntryVec, index, entry) {
-        if (IsStrEqual(userId, StringGet(&((*entry)->userId)))) {
+        if (HcStrcmp(userId, StringGet(&((*entry)->userId))) == 0) {
             isExist = true;
             break;
         }
@@ -226,7 +226,7 @@ static int32_t AssertSharedUserIdValid(const CJson *jsonParams)
         LOGE("Failed to get sharedUserId from jsonParams!");
         return HC_ERR_JSON_GET;
     }
-    if (IsStrEqual(sharedUserId, userId)) {
+    if (HcStrcmp(sharedUserId, userId) == 0) {
         LOGE("The input peerUserId is the same as the local userId!");
         return HC_ERR_INVALID_PARAMS;
     }
@@ -500,7 +500,7 @@ static int32_t CheckUserIdValid(int32_t osAccountId, const CJson *jsonParams, co
         return HC_ERR_DB;
     }
     FOR_EACH_HC_VECTOR(groupEntryVec, index, entry) {
-        if (IsStrEqual(userId, StringGet(&(*entry)->sharedUserId))) {
+        if (HcStrcmp(userId, StringGet(&(*entry)->sharedUserId)) == 0) {
             ClearGroupEntryVec(&groupEntryVec);
             return HC_SUCCESS;
         }
diff --git a/services/legacy/group_manager/src/group_operation/group_operation.c b/services/legacy/group_manager/src/group_operation/group_operation.c
index b83a19e4f1579514368facf261b7b41d721f1d37..76b09089fc0f4001b72bce40759736a3568bb6be 100644
--- a/services/legacy/group_manager/src/group_operation/group_operation.c
+++ b/services/legacy/group_manager/src/group_operation/group_operation.c
@@ -1759,7 +1759,7 @@ static bool IsCallerExtPart(int32_t opCode, CJson *params)
         LOGE("Failed to get appId!");
         return false;
     }
-    if (!IsStrEqual(appId, EXT_PART_APP_ID)) {
+    if (HcStrcmp(appId, EXT_PART_APP_ID) != 0) {
         return false;
     }
     return true;
diff --git a/services/legacy/group_manager/src/group_operation/group_operation_common/group_operation_common.c b/services/legacy/group_manager/src/group_operation/group_operation_common/group_operation_common.c
index 8cda62fd087d310d7633e9c890815fd92cd68639..9bf9ec1109ce8b93b683f1de9888203cb63c95d5 100644
--- a/services/legacy/group_manager/src/group_operation/group_operation_common/group_operation_common.c
+++ b/services/legacy/group_manager/src/group_operation/group_operation_common/group_operation_common.c
@@ -64,7 +64,7 @@ static bool IsGroupManager(const char *appId, const TrustedGroupEntry *entry)
     uint32_t index;
     HcString *manager = NULL;
     FOR_EACH_HC_VECTOR(entry->managers, index, manager) {
-        if ((IsStrEqual(StringGet(manager), appId)) ||
+        if ((HcStrcmp(StringGet(manager), appId) == 0) ||
             CheckUpgradeIdentity(entry->upgradeFlag, appId, StringGet(manager)) == HC_SUCCESS) {
             return true;
         }
@@ -77,7 +77,7 @@ static bool IsGroupFriend(const char *appId, const TrustedGroupEntry *entry)
     uint32_t index;
     HcString *trustedFriend = NULL;
     FOR_EACH_HC_VECTOR(entry->friends, index, trustedFriend) {
-        if ((IsStrEqual(StringGet(trustedFriend), appId)) ||
+        if ((HcStrcmp(StringGet(trustedFriend), appId) == 0) ||
             CheckUpgradeIdentity(entry->upgradeFlag, appId, StringGet(trustedFriend)) == HC_SUCCESS) {
             return true;
         }
@@ -195,7 +195,7 @@ bool IsLocalDevice(const char *udid)
         LOGE("Failed to get local udid! res: %" LOG_PUB "d", res);
         return true;
     }
-    return IsStrEqual(localUdid, udid);
+    return (HcStrcmp(localUdid, udid) == 0);
 }
 
 bool IsGroupOwner(int32_t osAccountId, const char *groupId, const char *appId)
@@ -216,7 +216,7 @@ bool IsGroupOwner(int32_t osAccountId, const char *groupId, const char *appId)
         DestroyGroupEntry(entry);
         return false;
     }
-    if ((IsStrEqual(groupOwner, appId)) ||
+    if ((HcStrcmp(groupOwner, appId) == 0) ||
         CheckUpgradeIdentity(entry->upgradeFlag, appId, groupOwner) == HC_SUCCESS) {
         DestroyGroupEntry(entry);
         return true;
@@ -743,7 +743,7 @@ int32_t AssertPeerDeviceNotSelf(const char *peerUdid)
         LOGE("Failed to get local udid! res: %" LOG_PUB "d", res);
         return HC_ERR_DB;
     }
-    if (IsStrEqual(peerUdid, udid)) {
+    if (HcStrcmp(peerUdid, udid) == 0) {
         LOGE("You are not allowed to delete yourself!");
         return HC_ERR_INVALID_PARAMS;
     }
diff --git a/services/legacy/group_manager/src/group_operation/identical_account_group/identical_account_group.c b/services/legacy/group_manager/src/group_operation/identical_account_group/identical_account_group.c
index c27d348f7e9f3372e820193a7f6d523a940d0a04..f756d4c4015041a23697243b4608970aa12b3e80 100644
--- a/services/legacy/group_manager/src/group_operation/identical_account_group/identical_account_group.c
+++ b/services/legacy/group_manager/src/group_operation/identical_account_group/identical_account_group.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2022-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2022-2023 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -502,7 +502,7 @@ static int32_t CheckUserIdValid(int32_t osAccountId, const CJson *jsonParams, co
         return HC_ERR_DB;
     }
     FOR_EACH_HC_VECTOR(groupEntryVec, index, entry) {
-        if (IsStrEqual(userId, StringGet(&(*entry)->userId))) {
+        if (HcStrcmp(userId, StringGet(&(*entry)->userId)) == 0) {
             ClearGroupEntryVec(&groupEntryVec);
             return HC_SUCCESS;
         }
diff --git a/services/legacy/identity_manager/src/credential_operator.c b/services/legacy/identity_manager/src/credential_operator.c
index 1ca683abf51d45f27d189f245d5289d647857a9a..9ee61e4499cb857ee600c5fef19efd2ad8cb7076 100644
--- a/services/legacy/identity_manager/src/credential_operator.c
+++ b/services/legacy/identity_manager/src/credential_operator.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2023-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2023 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -83,7 +83,7 @@ static bool IsPeerDevice(const Uint8Buff *authId)
         HcFree(authIdStr);
         return false;
     }
-    bool isPeerDevice = !IsStrEqual(selfUdid, authIdStr);
+    bool isPeerDevice = HcStrcmp(selfUdid, authIdStr) != 0;
     HcFree(authIdStr);
     return isPeerDevice;
 }
diff --git a/services/privacy_enhancement/src/pseudonym_manager.c b/services/privacy_enhancement/src/pseudonym_manager.c
index 04263d67b7ebd73bcdbd3b21eda32732900034c5..fdad8779ce9ce0d77fef3b1b1ccb828c0c900f23 100644
--- a/services/privacy_enhancement/src/pseudonym_manager.c
+++ b/services/privacy_enhancement/src/pseudonym_manager.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2023-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2023 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -85,7 +85,7 @@ static PseudonymInfo **QueryPseudonymInfoPtrIfMatch(const PseudonymInfoVec *vec,
     uint32_t index;
     PseudonymInfo **pseudonymInfo;
     FOR_EACH_HC_VECTOR(*vec, index, pseudonymInfo) {
-        if (IsStrEqual(realInfo, (*pseudonymInfo)->realInfo)) {
+        if (HcStrcmp(realInfo, (*pseudonymInfo)->realInfo) == 0) {
             return pseudonymInfo;
         }
     }
@@ -386,9 +386,9 @@ static int32_t SavePseudonymInfoToFile(int32_t osAccountId, const PseudonymInfoV
 
 static const char *GetParamByFieldName(const char *fieldName, PseudonymInfo *pseudonymInfoEntry)
 {
-    if (IsStrEqual(fieldName, FIELD_DEVICE_ID)) {
+    if (HcStrcmp(fieldName, FIELD_DEVICE_ID) == 0) {
         return pseudonymInfoEntry->deviceId;
-    } else if (IsStrEqual(fieldName, FIELD_INDEX_KEY)) {
+    } else if (HcStrcmp(fieldName, FIELD_INDEX_KEY) == 0) {
         return pseudonymInfoEntry->indexKey;
     } else {
         LOGE("Not support this field!");
@@ -524,7 +524,7 @@ static int32_t DeletePseudonymInner(int32_t osAccountId, const char *dataTodelet
     while (index < HC_VECTOR_SIZE(&info->pseudonymInfoVec)) {
         pseudonymInfoEntry = info->pseudonymInfoVec.getp(&info->pseudonymInfoVec, index);
         if ((pseudonymInfoEntry == NULL) || (*pseudonymInfoEntry == NULL) ||
-            (!IsStrEqual(dataTodelete, GetParamByFieldName(fieldName, *pseudonymInfoEntry)))) {
+            (HcStrcmp(dataTodelete, GetParamByFieldName(fieldName, *pseudonymInfoEntry))) != 0) {
             index++;
             continue;
         }
@@ -587,7 +587,7 @@ static void LoadPseudonymData(void)
         if (name == NULL) {
             continue;
         }
-        if (IsStrEqual(name, "pseudonym_data.dat")) {
+        if (HcStrcmp(name, "pseudonym_data.dat") == 0) {
             LoadOsAccountPseudonymDb(DEFAULT_OS_ACCOUNT);
         } else if (sscanf_s(name, "pseudonym_data%d.dat", &osAccountId) == 1) {
             LoadOsAccountPseudonymDb(osAccountId);
@@ -615,7 +615,7 @@ static int32_t GetRealInfo(int32_t osAccountId, const char *pseudonymId, char **
     PseudonymInfo **pseudonymInfoEntry = NULL;
     FOR_EACH_HC_VECTOR(info->pseudonymInfoVec, index, pseudonymInfoEntry) {
         if ((pseudonymInfoEntry != NULL) && (*pseudonymInfoEntry != NULL) &&
-            (IsStrEqual((*pseudonymInfoEntry)->pseudonymId, pseudonymId))) {
+            (HcStrcmp((*pseudonymInfoEntry)->pseudonymId, pseudonymId) == 0)) {
             if (DeepCopyString((*pseudonymInfoEntry)->realInfo, realInfo) != HC_SUCCESS) {
                 LOGE("Failed to deep copy pseudonymInfoentry realInfo!");
                 UnlockHcMutex(g_mutex);
@@ -647,7 +647,7 @@ static int32_t GetPseudonymId(int32_t osAccountId, const char *indexKey, char **
     PseudonymInfo **pseudonymInfoEntry = NULL;
     FOR_EACH_HC_VECTOR(info->pseudonymInfoVec, index, pseudonymInfoEntry) {
         if ((pseudonymInfoEntry != NULL) && (*pseudonymInfoEntry != NULL) &&
-            (IsStrEqual((*pseudonymInfoEntry)->indexKey, indexKey))) {
+            (HcStrcmp((*pseudonymInfoEntry)->indexKey, indexKey) == 0)) {
             if (DeepCopyString((*pseudonymInfoEntry)->pseudonymId, pseudonymId) != HC_SUCCESS) {
                 LOGE("Failed to deep copy pseudonymId!");
                 UnlockHcMutex(g_mutex);
@@ -802,7 +802,7 @@ static bool IsNeedRefreshPseudonymId(int32_t osAccountId, const char *indexKey)
     PseudonymInfo **pseudonymInfoEntry = NULL;
     FOR_EACH_HC_VECTOR(info->pseudonymInfoVec, index, pseudonymInfoEntry) {
         if ((pseudonymInfoEntry != NULL) && (*pseudonymInfoEntry != NULL) &&
-            (IsStrEqual((*pseudonymInfoEntry)->indexKey, indexKey))) {
+            (HcStrcmp((*pseudonymInfoEntry)->indexKey, indexKey) == 0)) {
             if (IsNeedRefresh(*pseudonymInfoEntry)) {
                 UnlockHcMutex(g_mutex);
                 return true;
diff --git a/services/session_manager/src/dev_session_mgr.c b/services/session_manager/src/dev_session_mgr.c
index a3b75a33c9496ef92fc3480e3de7132f7692db1b..8fa358cdcb1a6bca9f84b8c659a08406e9e281fb 100644
--- a/services/session_manager/src/dev_session_mgr.c
+++ b/services/session_manager/src/dev_session_mgr.c
@@ -248,7 +248,7 @@ void CancelDevSession(int64_t sessionId, const char *appId)
     SessionInfo *ptr;
     FOR_EACH_HC_VECTOR(g_sessionInfoList, index, ptr) {
         DevSession *session = ptr->session;
-        if (session->id == sessionId && IsStrEqual(session->appId, appId)) {
+        if (session->id == sessionId && HcStrcmp(session->appId, appId) == 0) {
             session->destroy(session);
             HC_VECTOR_POPELEMENT(&g_sessionInfoList, ptr, index);
             LOGI("cancel session success. [CurNum]: %" LOG_PUB "u, [Id]: %" LOG_PUB PRId64,
diff --git a/services/session_manager/src/session/v1/compatible_bind_sub_session/compatible_bind_sub_session_common.c b/services/session_manager/src/session/v1/compatible_bind_sub_session/compatible_bind_sub_session_common.c
index 99330405f387fea629f79e82d199114e2315c31a..65af6759b33f100c34b995efb1b8f6206990c2f5 100644
--- a/services/session_manager/src/session/v1/compatible_bind_sub_session/compatible_bind_sub_session_common.c
+++ b/services/session_manager/src/session/v1/compatible_bind_sub_session/compatible_bind_sub_session_common.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2023-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2023 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -164,7 +164,7 @@ static int32_t CheckAuthIdAndUserTypeValid(int32_t osAccountId, int userType, co
         return result;
     }
     const char *oriAuthId = StringGet(&deviceInfo->authId);
-    if ((deviceInfo->devType != userType) || ((oriAuthId != NULL) && (!IsStrEqual(oriAuthId, authId)))) {
+    if ((deviceInfo->devType != userType) || ((oriAuthId != NULL) && (HcStrcmp(oriAuthId, authId) != 0))) {
         LOGE("Once a group is created, the service cannot change the local authId and userType used in the group!");
         DestroyDeviceEntry(deviceInfo);
         return HC_ERR_INVALID_PARAMS;
diff --git a/services/session_manager/src/session/v2/dev_session_util.c b/services/session_manager/src/session/v2/dev_session_util.c
index 855e20d6374f410ec5cc721bebd0eef8f81e388f..25fc3e906e69ccd5ff51d626477c8b2b89a54564 100644
--- a/services/session_manager/src/session/v2/dev_session_util.c
+++ b/services/session_manager/src/session/v2/dev_session_util.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2023-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2023 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -795,7 +795,7 @@ bool IsPeerSameUserId(int32_t osAccountId, const char *peerUserId)
         return false;
     }
     TrustedGroupEntry *groupEntry = groupVec.get(&groupVec, 0);
-    bool isSame = (IsStrEqual(StringGet(&(groupEntry->userId)), peerUserId));
+    bool isSame = (HcStrcmp(StringGet(&(groupEntry->userId)), peerUserId) == 0);
     ClearGroupEntryVec(&groupVec);
     return isSame;
 }
\ No newline at end of file
diff --git a/services/session_manager/src/session/v2/expand_sub_session/expand_process_lib/save_trusted_info.c b/services/session_manager/src/session/v2/expand_sub_session/expand_process_lib/save_trusted_info.c
index a5921045af9ec6655e42b44f151e2d2b2754fad3..02b3c252ad1464a4c5904bc280ea67ea9be6c966 100644
--- a/services/session_manager/src/session/v2/expand_sub_session/expand_process_lib/save_trusted_info.c
+++ b/services/session_manager/src/session/v2/expand_sub_session/expand_process_lib/save_trusted_info.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2023-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2023 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -369,7 +369,7 @@ static bool IsAcrossAccount(const CmdParams *params)
         LOGW("userIdSelf or userIdPeer is null");
         return false;
     }
-    if (!params->isBind && !IsStrEqual(params->userIdSelf, params->userIdPeer)) {
+    if (!params->isBind && HcStrcmp(params->userIdSelf, params->userIdPeer) != 0) {
         LOGI("No peer-to-peer binding and SelfUserId is not equal to PeerUserId, don't need to add peerDevice!");
         return true;
     }
diff --git a/test/unittest/deviceauth/BUILD.gn b/test/unittest/deviceauth/BUILD.gn
index 49b6a4b38e640d79cb51923af1469ff16ee04020..56562fcd54d4664f86d961200bee862f36b0ae72 100644
--- a/test/unittest/deviceauth/BUILD.gn
+++ b/test/unittest/deviceauth/BUILD.gn
@@ -1,4 +1,4 @@
-# Copyright (C) 2021-2025 Huawei Device Co., Ltd.
+# Copyright (C) 2021-2023 Huawei Device Co., Ltd.
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -633,7 +633,6 @@ ohos_unittest("deviceauth_unit_test") {
     "unit_test/source/account_related_creds_manager_dir_test.cpp",
     "unit_test/source/common_lib_test.cpp",
     "unit_test/source/key_management_test.cpp",
-    "unit_test/source/group_data_manager_test.cpp",
   ]
 
   defines = [
diff --git a/test/unittest/deviceauth/source/deviceauth_identity_service_test.cpp b/test/unittest/deviceauth/source/deviceauth_identity_service_test.cpp
index 0950832a894eaad7e8d7cc608ee98f4c38cb3a4b..b4114ff599a1662ac58ffd4a3af09609ba223bc1 100644
--- a/test/unittest/deviceauth/source/deviceauth_identity_service_test.cpp
+++ b/test/unittest/deviceauth/source/deviceauth_identity_service_test.cpp
@@ -841,7 +841,7 @@ HWTEST_F(CredMgrQueryCredInfoByCredIdTest, CredMgrQueryCredInfoByCredIdTest001,
     CJson *credInfoJson = CreateJsonFromString(returnCredInfo);
     HcFree(returnCredInfo);
     const char *deviceId = GetStringFromJson(credInfoJson, FIELD_DEVICE_ID);
-    EXPECT_EQ(IsStrEqual(deviceId, TEST_DEVICE_ID), true);
+    EXPECT_EQ(HcStrcmp(deviceId, TEST_DEVICE_ID), TEST_RESULT_SUCCESS);
     FreeJson(credInfoJson);
 }
 
diff --git a/test/unittest/deviceauth/source/identity_service_ipc_test.cpp b/test/unittest/deviceauth/source/identity_service_ipc_test.cpp
index d1903d9645756175ab19372bc025d2fbfd3f1e54..20c0c22d7a93a1aa521fc6856132558a3d40ad07 100644
--- a/test/unittest/deviceauth/source/identity_service_ipc_test.cpp
+++ b/test/unittest/deviceauth/source/identity_service_ipc_test.cpp
@@ -20,12 +20,12 @@
 #include "device_auth.h"
 #include "device_auth_defines.h"
 #include "json_utils.h"
-#include "string_util.h"
 #include "hc_types.h"
 #include "securec.h"
 #include "nativetoken_kit.h"
 #include "token_setproc.h"
 #include "accesstoken_kit.h"
+#include "string_util.h"
 
 using namespace std;
 using namespace testing::ext;
@@ -403,7 +403,7 @@ HWTEST_F(CredMgrQueryCredInfoByCredIdTest, CredMgrQueryCredInfoByCredIdTest001,
     HcFree(returnCredInfo);
     const char *deviceId = GetStringFromJson(credInfoJson, FIELD_DEVICE_ID);
     if (deviceId != nullptr) {
-        EXPECT_EQ(IsStrEqual(deviceId, TEST_DEVICE_ID), true);
+        EXPECT_EQ(HcStrcmp(deviceId, TEST_DEVICE_ID), TEST_RESULT_SUCCESS);
     }
     FreeJson(credInfoJson);
 }
diff --git a/test/unittest/deviceauth/source/json_utils_mock.c b/test/unittest/deviceauth/source/json_utils_mock.c
index 1d0b058cd556d919ea523632b97814972701e50e..ac428dca33dcde1700d822a96158d048ad02f124 100644
--- a/test/unittest/deviceauth/source/json_utils_mock.c
+++ b/test/unittest/deviceauth/source/json_utils_mock.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2021 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -129,7 +129,7 @@ void DeleteAllItemExceptOne(CJson *jsonObj, const char *key)
     CJson *nextItem = NULL;
     while (curItem != NULL) {
         nextItem = curItem->next;
-        if (!IsStrEqual(key, curItem->string)) {
+        if (HcStrcmp(key, curItem->string) != 0) {
             cJSON_Delete(cJSON_DetachItemViaPointer(jsonObj, curItem));
         }
         curItem = nextItem;
diff --git a/test/unittest/deviceauth/unit_test/source/common_lib_test.cpp b/test/unittest/deviceauth/unit_test/source/common_lib_test.cpp
index fcd837acba41a3e82be1a896ee5b7145c1459978..dce6aeff8d39f39f56713370ed95cad4c00f1a56 100644
--- a/test/unittest/deviceauth/unit_test/source/common_lib_test.cpp
+++ b/test/unittest/deviceauth/unit_test/source/common_lib_test.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2022-2025 Huawei Device Co., Ltd.
+ * Copyright (C) 2022 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -821,17 +821,4 @@ HWTEST_F(CommonLibTest, ParseTlvNodeTest001, TestSize.Level0)
     EXPECT_EQ(ret, TLV_FAIL);
     DeleteParcel(&parcelWithData);
 }
-
-HWTEST_F(CommonLibTest, IsStrEqualTest001, TestSize.Level0)
-{
-    EXPECT_EQ(IsStrEqual(nullptr, nullptr), false);
-    EXPECT_EQ(IsStrEqual("123", nullptr), false);
-    EXPECT_EQ(IsStrEqual(nullptr, "123"), false);
-    EXPECT_EQ(IsStrEqual("123", "123"), true);
-    EXPECT_EQ(IsStrEqual("123", "1234"), false);
-    EXPECT_EQ(IsStrEqual("1234", "123"), false);
-    EXPECT_EQ(IsStrEqual("", ""), true);
-    EXPECT_EQ(IsStrEqual("", "123"), false);
-    EXPECT_EQ(IsStrEqual("123", ""), false);
-}
 }
\ No newline at end of file
diff --git a/test/unittest/deviceauth/unit_test/source/group_data_manager_test.cpp b/test/unittest/deviceauth/unit_test/source/group_data_manager_test.cpp
deleted file mode 100644
index 022c2bcf2d9dd091c28a492c51a9c9d265b02a19..0000000000000000000000000000000000000000
--- a/test/unittest/deviceauth/unit_test/source/group_data_manager_test.cpp
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * Copyright (C) 2025 Huawei Device Co., Ltd.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "gtest/gtest.h"
-#include "group_data_manager.h"
-#include "device_auth_defines.h"
-#include "device_auth.h"
-#include "common_defs.h"
-using namespace testing::ext;
-namespace {
-static const int32_t TEST_OS_ACCOUNT_ID = 0;
-static const char *TEST_OWNER = "test_owner";
-static const char *TEST_GROUP_ID = "test_group_id";
-static const char *TEST_GROUP_NAME = "test_group_name";
-static const char *TEST_USER_ID = "0";
-static const char *TEST_SHARED_USER_ID = "test_sharedUser_id";
-class GroupDataManagerTest : public testing::Test {
-public:
-    static void SetUpTestCase(void);
-    static void TearDownTestCase(void);
-    void SetUp();
-    void TearDown();
-};
-
-void GroupDataManagerTest::SetUpTestCase(void) {}
-void GroupDataManagerTest::TearDownTestCase(void) {}
-
-void GroupDataManagerTest::SetUp(void)
-{
-    InitDatabase();
-}
-
-void GroupDataManagerTest::TearDown(void)
-{
-    DestroyDatabase();
-}
-
-static TrustedGroupEntry *generateTestGroupEntry(void)
-{
-    TrustedGroupEntry *entry = CreateGroupEntry();
-    if (entry == NULL) {
-        return NULL;
-    }
-    entry->type = ALL_GROUP;
-    entry->visibility = ALL_GROUP_VISIBILITY;
-    HcString ownerName = CreateString();
-    StringSetPointer(&(ownerName), TEST_OWNER);
-    entry->managers.pushBack(&entry->managers, &ownerName);
-    StringSetPointer(&(entry->name), TEST_GROUP_NAME);
-    StringSetPointer(&(entry->id), TEST_GROUP_ID);
-    StringSetPointer(&(entry->userId), TEST_USER_ID);
-    StringSetPointer(&(entry->sharedUserId), TEST_SHARED_USER_ID);
-    return entry;
-}
-
-HWTEST_F(GroupDataManagerTest, DelGroupTEST001, TestSize.Level0)
-{
-    QueryGroupParams param = InitQueryGroupParams();
-    TrustedGroupEntry *entry = generateTestGroupEntry();
-    GroupEntryVec vec = CreateGroupEntryVec();
-    ASSERT_NE(entry, nullptr);
-    EXPECT_EQ(AddGroup(TEST_OS_ACCOUNT_ID, entry), HC_SUCCESS);
-    EXPECT_EQ(DelGroup(TEST_OS_ACCOUNT_ID, nullptr), HC_ERR_NULL_PTR);
-    EXPECT_EQ(QueryGroups(TEST_OS_ACCOUNT_ID, &param, &vec), HC_SUCCESS);
-    EXPECT_EQ(HC_VECTOR_SIZE(&vec), 1);
-    ClearGroupEntryVec(&vec);
-    DestroyGroupEntry(entry);
-}
-}
\ No newline at end of file