diff --git a/app/src/main/cpp/MicroPhoto.cpp b/app/src/main/cpp/MicroPhoto.cpp
index 17f922a3..ac458a7c 100644
--- a/app/src/main/cpp/MicroPhoto.cpp
+++ b/app/src/main/cpp/MicroPhoto.cpp
@@ -833,8 +833,8 @@ Java_com_xypower_mpapp_MicroPhotoService_querySecVersion(
 }
 
 extern "C" JNIEXPORT jboolean JNICALL
-Java_com_xypower_mpapp_MicroPhotoService_requestCert(
-        JNIEnv* env, jclass cls, jint type, jint index, jstring subject, jstring outputPath) {
+Java_com_xypower_mpapp_MicroPhotoService_genCertRequest(
+        JNIEnv* env, jclass cls, jint index, jint type, jstring subject, jstring outputPath) {
 
 #ifdef USING_NRSEC
     if (env->GetStringUTFLength(subject) <=0 || env->GetStringUTFLength(outputPath) <=0)
@@ -852,9 +852,8 @@ Java_com_xypower_mpapp_MicroPhotoService_requestCert(
     uint8_t output[1024] = { 0 };
     uint16_t len = 0;
     const char* subjectStr = env->GetStringUTFChars(subject, 0);
-    
-    std::string titleStr(subjectStr);
-    bool res = nrsec.SM2cert(type, index, titleStr, output, &len) == 0;
+
+    bool res = nrsec.SM2cert(type, index, MakeString(subjectStr), output, &len) == 0;
     nrsec.Close();
     env->ReleaseStringUTFChars(subject, subjectStr);
     if (!res)
@@ -921,7 +920,7 @@ Java_com_xypower_mpapp_MicroPhotoService_exportPublicKeyFile(
 
 #ifdef USING_NRSEC
 
-    if (env->GetStringUTFLength(outputPath)<=0)
+    if (env->GetStringUTFLength(outputPath) <= 0)
     {
         return JNI_FALSE;
     }
@@ -934,8 +933,8 @@ Java_com_xypower_mpapp_MicroPhotoService_exportPublicKeyFile(
     }
 
     bool res = false;
-    std::vector<unsigned char> data(64,0);
-    uint8_t len=0;
+    std::vector<unsigned char> data(64, 0);
+    uint8_t len = 0;
     res = nrsec.SM2ExportPublicKey(index, &data[0], &len) == 0;
     nrsec.Close();
     if (!res)
@@ -978,8 +977,8 @@ Java_com_xypower_mpapp_MicroPhotoService_exportPrivateFile(
 
     bool res = false;
     std::vector<unsigned char> data(64,0);
-    uint8_t len=0;
-    res = nrsec.SM2ExportPrivateKey(index, &data[0],&len) == 0;
+    uint8_t len = 0;
+    res = nrsec.SM2ExportPrivateKey(index, &data[0], &len) == 0;
     nrsec.Close();
     if (!res)
     {
diff --git a/app/src/main/java/com/xypower/mpapp/CertActivity.java b/app/src/main/java/com/xypower/mpapp/CertActivity.java
index c6acdcc3..8b46e1f9 100644
--- a/app/src/main/java/com/xypower/mpapp/CertActivity.java
+++ b/app/src/main/java/com/xypower/mpapp/CertActivity.java
@@ -53,8 +53,11 @@ public class CertActivity extends AppCompatActivity {
                 int index = intent.getIntExtra("index", 0);
                 MicroPhotoService.genKeys(index);
             } else if (TextUtils.equals(action, ACTION_CERT_REQ)) {
-                // int index = intent.getIntExtra("index", 0);
-                // MicroPhotoService.genKeys(index);
+                int index = intent.getIntExtra("index", 0);
+                int type = intent.getIntExtra("type", 0);
+                String subject = intent.getStringExtra("subject");
+                String path = intent.getStringExtra("path");
+                MicroPhotoService.genCertRequest(index, type, subject, path);
             }
         }
 
diff --git a/app/src/main/java/com/xypower/mpapp/MicroPhotoService.java b/app/src/main/java/com/xypower/mpapp/MicroPhotoService.java
index 4fd33563..1f89b02e 100644
--- a/app/src/main/java/com/xypower/mpapp/MicroPhotoService.java
+++ b/app/src/main/java/com/xypower/mpapp/MicroPhotoService.java
@@ -1145,7 +1145,7 @@ cellSignalStrengthGsm.getDbm();
     public static native boolean genKeys(int index);
 
     public static native String querySecVersion();
-    public static native boolean requestCert(int type, int index, String subject, String outputPath);
+    public static native boolean genCertRequest(int index, int type, String subject, String outputPath);
     public static native boolean importPrivateKeyFile(int index, String outputPath, String md5);
     public static native boolean exportPublicKeyFile(int index, String outputPath);
     public static native boolean exportPrivateFile(int index, String outputPath);