diff --git a/frameworks/js/napi/src/napi_cert_chain_validator.cpp b/frameworks/js/napi/src/napi_cert_chain_validator.cpp
index ea223ce29a0b54e6c846e3a5270ce3cee44ab6f7..403befbd1ec98da0aa8740dc634893aa20b8c2d4 100644
--- a/frameworks/js/napi/src/napi_cert_chain_validator.cpp
+++ b/frameworks/js/napi/src/napi_cert_chain_validator.cpp
@@ -74,7 +74,6 @@ static void FreeCryptoFwkCtx(napi_env env, CfCtx *context)
     }
 
     HcfFree(context);
-    context = nullptr;
 }
 
 static void ReturnCallbackResult(napi_env env, CfCtx *context, napi_value result)
@@ -139,7 +138,7 @@ napi_value NapiCertChainValidator::Validate(napi_env env, napi_callback_info inf
     if (!CheckArgsCount(env, argc, ARGS_SIZE_TWO, false)) {
         return nullptr;
     }
-    CfCtx *context = (CfCtx *)HcfMalloc(sizeof(CfCtx), 0);
+    CfCtx *context = static_cast<CfCtx *>(HcfMalloc(sizeof(CfCtx), 0));
     if (context == nullptr) {
         LOGE("malloc context failed!");
         return nullptr;
diff --git a/frameworks/js/napi/src/napi_x509_certificate.cpp b/frameworks/js/napi/src/napi_x509_certificate.cpp
index 32cd39542c8f69e535ceb1d9dfb363e0a5502c73..7ef9b47b922fc6b7577b9f51fa8b617383f2181c 100644
--- a/frameworks/js/napi/src/napi_x509_certificate.cpp
+++ b/frameworks/js/napi/src/napi_x509_certificate.cpp
@@ -82,7 +82,6 @@ static void FreeCryptoFwkCtx(napi_env env, CfCtx *context)
     context->encoded = nullptr;
 
     HcfFree(context);
-    context = nullptr;
 }
 
 static void ReturnCallbackResult(napi_env env, CfCtx *context, napi_value result)
@@ -248,7 +247,7 @@ napi_value NapiX509Certificate::Verify(napi_env env, napi_callback_info info)
         return nullptr;
     }
 
-    CfCtx *context = (CfCtx *)HcfMalloc(sizeof(CfCtx), 0);
+    CfCtx *context = static_cast<CfCtx *>(HcfMalloc(sizeof(CfCtx), 0));
     if (context == nullptr) {
         LOGE("malloc context failed!");
         return nullptr;
@@ -295,7 +294,7 @@ napi_value NapiX509Certificate::GetEncoded(napi_env env, napi_callback_info info
         return nullptr;
     }
 
-    CfCtx *context = (CfCtx *)HcfMalloc(sizeof(CfCtx), 0);
+    CfCtx *context = static_cast<CfCtx *>(HcfMalloc(sizeof(CfCtx), 0));
     if (context == nullptr) {
         LOGE("malloc context failed!");
         return nullptr;
@@ -332,7 +331,7 @@ napi_value NapiX509Certificate::GetPublicKey(napi_env env, napi_callback_info in
         return nullptr;
     }
 
-    CfCtx *context = (CfCtx *)HcfMalloc(sizeof(CfCtx), 0);
+    CfCtx *context = static_cast<CfCtx *>(HcfMalloc(sizeof(CfCtx), 0));
     if (context == nullptr) {
         LOGE("malloc context failed!");
         return nullptr;
@@ -369,7 +368,7 @@ napi_value NapiX509Certificate::CheckValidityWithDate(napi_env env, napi_callbac
         return nullptr;
     }
 
-    CfCtx *context = (CfCtx *)HcfMalloc(sizeof(CfCtx), 0);
+    CfCtx *context = static_cast<CfCtx *>(HcfMalloc(sizeof(CfCtx), 0));
     if (context == nullptr) {
         LOGE("malloc context failed!");
         return nullptr;
@@ -1095,7 +1094,7 @@ napi_value NapiX509Certificate::NapiCreateX509Cert(napi_env env, napi_callback_i
         return nullptr;
     }
 
-    CfCtx *context = (CfCtx *)HcfMalloc(sizeof(CfCtx), 0);
+    CfCtx *context = static_cast<CfCtx *>(HcfMalloc(sizeof(CfCtx), 0));
     if (context == nullptr) {
         LOGE("malloc context failed!");
         return nullptr;
diff --git a/frameworks/js/napi/src/napi_x509_crl.cpp b/frameworks/js/napi/src/napi_x509_crl.cpp
index 2788c8c6db03381d8e384a73794ade51c58d3d08..66edb5383190295597d69f64b6d469bfb3e95c2f 100644
--- a/frameworks/js/napi/src/napi_x509_crl.cpp
+++ b/frameworks/js/napi/src/napi_x509_crl.cpp
@@ -89,7 +89,6 @@ static void FreeCryptoFwkCtx(napi_env env, CfCtx *context)
     }
 
     HcfFree(context);
-    context = nullptr;
 }
 
 static void ReturnCallbackResult(napi_env env, CfCtx *context, napi_value result)
@@ -400,7 +399,7 @@ napi_value NapiX509Crl::IsRevoked(napi_env env, napi_callback_info info)
         LOGE("x509Cert is null!");
         return nullptr;
     }
-    CfCtx *context = (CfCtx *)HcfMalloc(sizeof(CfCtx), 0);
+    CfCtx *context = static_cast<CfCtx *>(HcfMalloc(sizeof(CfCtx), 0));
     if (context == nullptr) {
         LOGE("malloc context failed!");
         return nullptr;
@@ -453,7 +452,7 @@ napi_value NapiX509Crl::GetEncoded(napi_env env, napi_callback_info info)
         return nullptr;
     }
 
-    CfCtx *context = (CfCtx *)HcfMalloc(sizeof(CfCtx), 0);
+    CfCtx *context = static_cast<CfCtx *>(HcfMalloc(sizeof(CfCtx), 0));
     if (context == nullptr) {
         LOGE("malloc context failed!");
         return nullptr;
@@ -498,7 +497,7 @@ napi_value NapiX509Crl::Verify(napi_env env, napi_callback_info info)
         return nullptr;
     }
 
-    CfCtx *context = (CfCtx *)HcfMalloc(sizeof(CfCtx), 0);
+    CfCtx *context = static_cast<CfCtx *>(HcfMalloc(sizeof(CfCtx), 0));
     if (context == nullptr) {
         LOGE("malloc context failed!");
         return nullptr;
@@ -640,7 +639,7 @@ napi_value NapiX509Crl::GetRevokedCertificate(napi_env env, napi_callback_info i
         return nullptr;
     }
 
-    CfCtx *context = (CfCtx *)HcfMalloc(sizeof(CfCtx), 0);
+    CfCtx *context = static_cast<CfCtx *>(HcfMalloc(sizeof(CfCtx), 0));
     if (context == nullptr) {
         LOGE("malloc context failed!");
         return nullptr;
@@ -691,7 +690,7 @@ napi_value NapiX509Crl::GetRevokedCertificateWithCert(napi_env env, napi_callbac
         return nullptr;
     }
 
-    CfCtx *context = (CfCtx *)HcfMalloc(sizeof(CfCtx), 0);
+    CfCtx *context = static_cast<CfCtx *>(HcfMalloc(sizeof(CfCtx), 0));
     if (context == nullptr) {
         LOGE("malloc context failed!");
         return nullptr;
@@ -729,7 +728,7 @@ napi_value NapiX509Crl::GetRevokedCertificates(napi_env env, napi_callback_info
         return nullptr;
     }
 
-    CfCtx *context = (CfCtx *)HcfMalloc(sizeof(CfCtx), 0);
+    CfCtx *context = static_cast<CfCtx *>(HcfMalloc(sizeof(CfCtx), 0));
     if (context == nullptr) {
         LOGE("malloc context failed!");
         return nullptr;
@@ -766,7 +765,7 @@ napi_value NapiX509Crl::GetTBSCertList(napi_env env, napi_callback_info info)
         return nullptr;
     }
 
-    CfCtx *context = (CfCtx *)HcfMalloc(sizeof(CfCtx), 0);
+    CfCtx *context = static_cast<CfCtx *>(HcfMalloc(sizeof(CfCtx), 0));
     if (context == nullptr) {
         LOGE("malloc context failed!");
         return nullptr;
@@ -1160,7 +1159,7 @@ napi_value NapiX509Crl::NapiCreateX509Crl(napi_env env, napi_callback_info info)
         return nullptr;
     }
 
-    CfCtx *context = (CfCtx *)HcfMalloc(sizeof(CfCtx), 0);
+    CfCtx *context = static_cast<CfCtx *>(HcfMalloc(sizeof(CfCtx), 0));
     if (context == nullptr) {
         LOGE("malloc context failed!");
         return nullptr;
diff --git a/frameworks/js/napi/src/napi_x509_crl_entry.cpp b/frameworks/js/napi/src/napi_x509_crl_entry.cpp
index 0ab47975e75be3931074c509455089c857534bc1..dd18f27b386f590d57dadd203f04108f647e89df 100644
--- a/frameworks/js/napi/src/napi_x509_crl_entry.cpp
+++ b/frameworks/js/napi/src/napi_x509_crl_entry.cpp
@@ -67,7 +67,6 @@ static void FreeCryptoFwkCtx(napi_env env, CfCtx *context)
     context->blob = nullptr;
 
     HcfFree(context);
-    context = nullptr;
 }
 
 static void ReturnCallbackResult(napi_env env, CfCtx *context, napi_value result)
@@ -240,7 +239,7 @@ napi_value NapiX509CrlEntry::GetEncoded(napi_env env, napi_callback_info info)
         return nullptr;
     }
 
-    CfCtx *context = (CfCtx *)HcfMalloc(sizeof(CfCtx), 0);
+    CfCtx *context = static_cast<CfCtx *>(HcfMalloc(sizeof(CfCtx), 0));
     if (context == nullptr) {
         LOGE("malloc context failed!");
         return nullptr;
@@ -292,7 +291,7 @@ napi_value NapiX509CrlEntry::GetCertificateIssuer(napi_env env, napi_callback_in
         return nullptr;
     }
 
-    CfCtx *context = (CfCtx *)HcfMalloc(sizeof(CfCtx), 0);
+    CfCtx *context = static_cast<CfCtx *>(HcfMalloc(sizeof(CfCtx), 0));
     if (context == nullptr) {
         LOGE("malloc context failed!");
         return nullptr;
@@ -329,7 +328,7 @@ napi_value NapiX509CrlEntry::GetRevocationDate(napi_env env, napi_callback_info
         return nullptr;
     }
 
-    CfCtx *context = (CfCtx *)HcfMalloc(sizeof(CfCtx), 0);
+    CfCtx *context = static_cast<CfCtx *>(HcfMalloc(sizeof(CfCtx), 0));
     if (context == nullptr) {
         LOGE("malloc context failed!");
         FreeCryptoFwkCtx(env, context);