diff --git a/app/src/main/cpp/MicroPhoto.cpp b/app/src/main/cpp/MicroPhoto.cpp
index c33b6f5a..1f256ce0 100644
--- a/app/src/main/cpp/MicroPhoto.cpp
+++ b/app/src/main/cpp/MicroPhoto.cpp
@@ -725,45 +725,49 @@ Java_com_xypower_mpapp_MicroPhotoService_getSerialNumber(
     return env->NewStringUTF(value);
 }
 
-
 extern "C" JNIEXPORT jboolean JNICALL
 Java_com_xypower_mpapp_MicroPhotoService_importPublicKeyFile(
         JNIEnv* env, jclass cls, jint index, jstring outputPath, jstring md5) {
 
 #ifdef USING_NRSEC
 
-    // NrsecSpiPort spi("/dev/mtkgpioctrl");
-    // NrsecSpiPort spi("/dev/spidevSE");
-    // const char *port = "/dev/mtkgpioctrl";
-
     if (env->GetStringUTFLength(outputPath) <=0)
     {
         return JNI_FALSE;
     }
-    
-    NrsecPort nrsec;
-    const char *path = NRSEC_PATH;
-    if (!nrsec.Open(path))
+
+    const char *outputPathStr = env->GetStringUTFChars(outputPath, 0);
+
+    std::vector<unsigned char> data;
+    bool res = readFile(outputPathStr, data);
+    env->ReleaseStringUTFChars(outputPath, outputPathStr);
+    if (!res || data.empty())
     {
         return JNI_FALSE;
     }
 
-    const char *outputPathStr = env->GetStringUTFChars(outputPath, 0);
     const char *md5Str = env->GetStringUTFChars(md5, 0);
 
-    bool res = false;
-    std::vector<unsigned char> data;
-    if (readFile(outputPathStr, data) && !data.empty())
+    GpioControl::setCam3V3Enable(true);
+    GpioControl::setSpiPower(true);
+
+    NrsecPort nrsec;
+    const char *path = NRSEC_PATH;
+    res = nrsec.Open(path);
+    if (res)
     {
         res = nrsec.SM2ImportPublicKey(index, &data[0]) == 0;
+        nrsec.Close();
     }
 
-    nrsec.Close();
+    GpioControl::setSpiPower(false);
+    GpioControl::setCam3V3Enable(false);
 
-    env->ReleaseStringUTFChars(outputPath, outputPathStr);
     env->ReleaseStringUTFChars(md5, md5Str);
 
     return res ? JNI_TRUE : JNI_FALSE;
+#else
+    return JNI_FALSE;
 #endif
 }
 
@@ -779,22 +783,26 @@ Java_com_xypower_mpapp_MicroPhotoService_importPublicKey(
         return JNI_FALSE;
     }
 
+    GpioControl::setCam3V3Enable(true);
+    GpioControl::setSpiPower(true);
+
     NrsecPort nrsec;
     const char *path = NRSEC_PATH;
-    if (!nrsec.Open(path))
+    bool res = nrsec.Open(path);
+    if (res)
     {
-        return JNI_FALSE;
+        jbyte* byteCert = env->GetByteArrayElements(cert, 0);
+        res = nrsec.SM2ImportPublicKey(index, (const uint8_t*)byteCert) == 0;
+        nrsec.Close();
+        env->ReleaseByteArrayElements(cert, byteCert, JNI_ABORT);
     }
 
-    jbyte* byteCert = env->GetByteArrayElements(cert, 0);
-
-    bool res = nrsec.SM2ImportPublicKey(index, (const uint8_t*)byteCert) == 0;
-
-    nrsec.Close();
-
-    env->ReleaseByteArrayElements(cert, byteCert, JNI_ABORT);
+    GpioControl::setSpiPower(false);
+    GpioControl::setCam3V3Enable(false);
 
     return res ? JNI_TRUE : JNI_FALSE;
+#else
+    return JNI_FALSE;
 #endif
 }
 
@@ -804,48 +812,52 @@ Java_com_xypower_mpapp_MicroPhotoService_genKeys(
         jclass cls, jint index) {
 
 #ifdef USING_NRSEC
-    // GpioControl::setRS485Enable(true);
-
-    //GpioControl::setSpiMode(SPI_MODE_3);
-    //GpioControl::setSpiBitsPerWord(8);
-    //GpioControl::setSpiMaxSpeedHz(33000000);
+    GpioControl::setCam3V3Enable(true);
+    GpioControl::setSpiPower(true);
 
     const char *path = NRSEC_PATH;
 
     NrsecPort nrsec;
-    if (!nrsec.Open(path))
+    bool res = nrsec.Open(path);
+    if (res)
     {
-        return JNI_FALSE;
+        res = nrsec.SM2keypair(index) == 0;
+        nrsec.Close();
     }
 
-    bool res = nrsec.SM2keypair(index) == 0;
-
-    nrsec.Close();
+    GpioControl::setSpiPower(false);
+    GpioControl::setCam3V3Enable(false);
 
     return res ? JNI_TRUE : JNI_FALSE;
+#else
+    return JNI_FALSE;
 #endif
-
 }
 
 extern "C" JNIEXPORT jstring JNICALL
 Java_com_xypower_mpapp_MicroPhotoService_querySecVersion(
         JNIEnv* env,
         jclass cls) {
+    std::string version;
 #ifdef USING_NRSEC
 
+    GpioControl::setCam3V3Enable(true);
+    GpioControl::setSpiPower(true);
+
     const char *path = NRSEC_PATH;
 
     NrsecPort nrsec;
-    if (!nrsec.Open(path))
+    bool res = nrsec.Open(path);
+    if (res)
     {
-        return NULL;
+        version = nrsec.Version();
+        nrsec.Close();
     }
 
-    std::string version = nrsec.Version();
-    nrsec.Close();
-
-    return env->NewStringUTF(version.c_str());
+    GpioControl::setSpiPower(false);
+    GpioControl::setCam3V3Enable(false);
 #endif
+    return env->NewStringUTF(version.c_str());
 }
 
 extern "C" JNIEXPORT jboolean JNICALL
@@ -859,74 +871,80 @@ Java_com_xypower_mpapp_MicroPhotoService_genCertRequest(
     }
     const char *path = NRSEC_PATH;
 
-    NrsecPort nrsec;
-    if (!nrsec.Open(path))
-    {
-        return JNI_FALSE;
-    }
+    GpioControl::setCam3V3Enable(true);
+    GpioControl::setSpiPower(true);
 
     uint8_t output[1024] = { 0 };
     uint16_t len = 0;
-    const char* subjectStr = env->GetStringUTFChars(subject, 0);
 
-    bool res = nrsec.SM2cert(type, index, MakeString(subjectStr), output, &len) == 0;
-    nrsec.Close();
-    env->ReleaseStringUTFChars(subject, subjectStr);
-    if (!res)
+    NrsecPort nrsec;
+    bool res = nrsec.Open(path);
+    if (res)
     {
-        return JNI_FALSE;
+        const char* subjectStr = env->GetStringUTFChars(subject, 0);
+        res = nrsec.SM2cert(type, index, MakeString(subjectStr), output, &len) == 0;
+        nrsec.Close();
+
+        env->ReleaseStringUTFChars(subject, subjectStr);
     }
 
-    const char* outputPathStr = env->GetStringUTFChars(outputPath, 0);
-    FILE* file = fopen(outputPathStr, "wb");
-    env->ReleaseStringUTFChars(outputPath, outputPathStr);
-    if (file == NULL)
+    if (res)
     {
-        return JNI_FALSE;
+        const char* outputPathStr = env->GetStringUTFChars(outputPath, 0);
+        res = writeFile(outputPathStr, output, len);
+        env->ReleaseStringUTFChars(outputPath, outputPathStr);
     }
 
-    int bytes = fwrite(output, sizeof(unsigned char), len, file);
-    fclose(file);
-
-    return bytes == len ? JNI_TRUE : JNI_FALSE;
+    return res ? JNI_TRUE : JNI_FALSE;
+#else
+    return JNI_FALSE;
 #endif
 }
 
 extern "C" JNIEXPORT jboolean JNICALL
 Java_com_xypower_mpapp_MicroPhotoService_importPrivateKeyFile(
-        JNIEnv* env, jclass cls, jint index, jstring outputPath, jstring md5) {
+        JNIEnv* env, jclass cls, jint index, jstring keyFilePath, jstring md5) {
 
 #ifdef USING_NRSEC
 
-    if (env->GetStringUTFLength(outputPath)<=0)
+    if (env->GetStringUTFLength(keyFilePath) <= 0)
     {
         return JNI_FALSE;
     }
-    const char *path = NRSEC_PATH;
 
-    NrsecPort nrsec;
-    if (!nrsec.Open(path))
+    bool res = false;
+    std::vector<unsigned char> data;
+    const char *keyFilePathStr = env->GetStringUTFChars(keyFilePath, 0);
+    res = readFile(keyFilePathStr, data);
+    env->ReleaseStringUTFChars(keyFilePath, keyFilePathStr);
+
+    if (!res || data.empty())
     {
         return JNI_FALSE;
     }
 
-    const char *outputPathStr = env->GetStringUTFChars(outputPath, 0);
-    const char *md5Str = env->GetStringUTFChars(md5, 0);
+    const char *path = NRSEC_PATH;
 
-    bool res = false;
-    std::vector<unsigned char> data;
-    if (readFile(outputPathStr, data) && !data.empty())
+    GpioControl::setCam3V3Enable(true);
+    GpioControl::setSpiPower(true);
+
+    NrsecPort nrsec;
+    res = nrsec.Open(path);
+    if (res)
     {
         res = nrsec.SM2ImportPrivateKey(index, &data[0]) == 0;
+        nrsec.Close();
     }
 
-    nrsec.Close();
+    GpioControl::setSpiPower(false);
+    GpioControl::setCam3V3Enable(false);
 
-    env->ReleaseStringUTFChars(outputPath, outputPathStr);
-    env->ReleaseStringUTFChars(md5, md5Str);
+    // const char *md5Str = env->GetStringUTFChars(md5, 0);
+    // env->ReleaseStringUTFChars(md5, md5Str);
 
     return res ? JNI_TRUE : JNI_FALSE;
-
+#else
+    return JNI_FALSE;
 #endif
 }
 
@@ -942,34 +960,33 @@ Java_com_xypower_mpapp_MicroPhotoService_exportPublicKeyFile(
     }
 
     const char *path = NRSEC_PATH;
-    NrsecPort nrsec;
-    if (!nrsec.Open(path))
-    {
-        return JNI_FALSE;
-    }
 
-    bool res = false;
-    std::vector<unsigned char> data(64, 0);
     uint8_t len = 0;
-    res = nrsec.SM2ExportPublicKey(index, &data[0], &len) == 0;
-    nrsec.Close();
-    if (!res)
-    {
-        return JNI_FALSE;
-    }
+    std::vector<unsigned char> data(64, 0);
 
-    const char* outputPathStr = env->GetStringUTFChars(outputPath, 0);
-    FILE* file = fopen(outputPathStr, "wb");
-    env->ReleaseStringUTFChars(outputPath, outputPathStr);
-    if (file == NULL)
+    GpioControl::setCam3V3Enable(true);
+    GpioControl::setSpiPower(true);
+
+    NrsecPort nrsec;
+    bool res = nrsec.Open(path);
+    if (res)
     {
-        return JNI_FALSE;
+        res = nrsec.SM2ExportPublicKey(index, &data[0], &len) == 0;
+        nrsec.Close();
     }
 
-    int bytes = fwrite(&data[0], sizeof(unsigned  char), len, file);
+    GpioControl::setSpiPower(false);
+    GpioControl::setCam3V3Enable(false);
 
-    fclose(file);   
-    return bytes == len ? JNI_TRUE : JNI_FALSE;
+    if (res)
+    {
+        const char* outputPathStr = env->GetStringUTFChars(outputPath, 0);
+        res = writeFile(outputPathStr, &data[0], len);
+        env->ReleaseStringUTFChars(outputPath, outputPathStr);
+    }
+    return res ? JNI_TRUE : JNI_FALSE;
+#else
+    return JNI_FALSE;
 #endif
 }
 
@@ -979,12 +996,16 @@ Java_com_xypower_mpapp_MicroPhotoService_exportPrivateFile(
 
 #ifdef USING_NRSEC
 
-    if (env->GetStringUTFLength(outputPath)<=0)
+    if (env->GetStringUTFLength(outputPath) <= 0)
     {
         return JNI_FALSE;
     }
 
     const char *path = NRSEC_PATH;
+
+    GpioControl::setCam3V3Enable(true);
+    GpioControl::setSpiPower(true);
+
     NrsecPort nrsec;
     if (!nrsec.Open(path))
     {
@@ -992,26 +1013,23 @@ Java_com_xypower_mpapp_MicroPhotoService_exportPrivateFile(
     }
 
     bool res = false;
-    std::vector<unsigned char> data(64,0);
+    std::vector<unsigned char> data(64, 0);
     uint8_t len = 0;
     res = nrsec.SM2ExportPrivateKey(index, &data[0], &len) == 0;
     nrsec.Close();
-    if (!res)
-    {
-        return JNI_FALSE;
-    }
 
-    const char* outputPathStr = env->GetStringUTFChars(outputPath, 0);
-    FILE* file = fopen(outputPathStr, "wb");
-    env->ReleaseStringUTFChars(outputPath, outputPathStr);
-    if (file == NULL)
+    GpioControl::setSpiPower(false);
+    GpioControl::setCam3V3Enable(false);
+
+    if (res)
     {
-        return JNI_FALSE;
+        const char* outputPathStr = env->GetStringUTFChars(outputPath, 0);
+        res = writeFile(outputPathStr, &data[0], len);
+        env->ReleaseStringUTFChars(outputPath, outputPathStr);
     }
 
-    int bytes = fwrite(&data[0], sizeof(unsigned  char), len, file);
-
-    fclose(file);
-    return bytes == len ? JNI_TRUE : JNI_FALSE;
+    return res ? JNI_TRUE : JNI_FALSE;
+#else
+    return JNI_FALSE;
 #endif
 }
diff --git a/app/src/main/java/com/xypower/mpapp/CertActivity.java b/app/src/main/java/com/xypower/mpapp/CertActivity.java
index 8b46e1f9..3887988d 100644
--- a/app/src/main/java/com/xypower/mpapp/CertActivity.java
+++ b/app/src/main/java/com/xypower/mpapp/CertActivity.java
@@ -9,6 +9,8 @@ import android.os.Handler;
 import android.text.TextUtils;
 import android.util.Base64;
 
+import com.xypower.common.FileUtils;
+
 import java.io.File;
 import java.nio.charset.StandardCharsets;
 
@@ -51,7 +53,12 @@ public class CertActivity extends AppCompatActivity {
                 }
             } else if (TextUtils.equals(action, ACTION_GEN_KEYS)) {
                 int index = intent.getIntExtra("index", 0);
-                MicroPhotoService.genKeys(index);
+                boolean res = MicroPhotoService.genKeys(index);
+                String path = intent.getStringExtra("path");
+                if (!TextUtils.isEmpty(path)) {
+                    FileUtils.ensureParentDirectoryExisted(path);
+                    FileUtils.writeTextFile(path, res ? "1" : "0");
+                }
             } else if (TextUtils.equals(action, ACTION_CERT_REQ)) {
                 int index = intent.getIntExtra("index", 0);
                 int type = intent.getIntExtra("type", 0);
diff --git a/common/src/main/java/com/xypower/common/FileUtils.java b/common/src/main/java/com/xypower/common/FileUtils.java
index fbd149a9..c39dab4f 100644
--- a/common/src/main/java/com/xypower/common/FileUtils.java
+++ b/common/src/main/java/com/xypower/common/FileUtils.java
@@ -1,6 +1,7 @@
 package com.xypower.common;
 
 import java.io.File;
+import java.io.FileOutputStream;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
@@ -80,4 +81,34 @@ public class FileUtils {
     }
 
 
+    public static void writeTextFile(String path, String content) {
+        FileOutputStream fileOutputStream = null;
+        try {
+            fileOutputStream = new FileOutputStream(path);
+            byte[] bytes = content.getBytes();
+            fileOutputStream.write(bytes);
+        } catch (Exception ex) {
+
+        } finally {
+            if (fileOutputStream != null) {
+                try {
+                    fileOutputStream.close();
+                } catch (Exception ex) {
+
+                }
+            }
+        }
+    }
+
+    public static void ensureParentDirectoryExisted(String fileName) {
+        File file = new File(fileName);
+        try {
+            File parentFile = file.getParentFile();
+            if (!parentFile.exists()) {
+                file.getParentFile().mkdirs();
+            }
+        } catch (Exception ex) {
+        }
+    }
+
 }