diff --git a/app/src/main/cpp/MicroPhoto.cpp b/app/src/main/cpp/MicroPhoto.cpp
index 746bb171..17f922a3 100644
--- a/app/src/main/cpp/MicroPhoto.cpp
+++ b/app/src/main/cpp/MicroPhoto.cpp
@@ -712,35 +712,39 @@ Java_com_xypower_mpapp_MicroPhotoService_getSerialNumber(
 
 extern "C" JNIEXPORT jboolean JNICALL
 Java_com_xypower_mpapp_MicroPhotoService_importPublicKeyFile(
-        JNIEnv* env, jclass cls, jint index, jstring path, jstring md5) {
+        JNIEnv* env, jclass cls, jint index, jstring outputPath, jstring md5) {
 
 #ifdef USING_NRSEC
 
-    NrsecPort nrsec;
-
     // NrsecSpiPort spi("/dev/mtkgpioctrl");
     // NrsecSpiPort spi("/dev/spidevSE");
     // const char *port = "/dev/mtkgpioctrl";
-    const char *port = "/dev/spidev0.0";
 
-    if (!nrsec.Open(port))
+    if (env->GetStringUTFLength(outputPath) <=0)
+    {
+        return JNI_FALSE;
+    }
+    
+    NrsecPort nrsec;
+    const char *path = NRSEC_PATH;
+    if (!nrsec.Open(path))
     {
         return JNI_FALSE;
     }
 
-    const char *pathStr = env->GetStringUTFChars(path, 0);
+    const char *outputPathStr = env->GetStringUTFChars(outputPath, 0);
     const char *md5Str = env->GetStringUTFChars(md5, 0);
 
     bool res = false;
     std::vector<unsigned char> data;
-    if (readFile(pathStr, data) && !data.empty())
+    if (readFile(outputPathStr, data) && !data.empty())
     {
-        res = nrsec.SM2ImportPublicKey(1, &data[0]);
+        res = nrsec.SM2ImportPublicKey(index, &data[0]) == 0;
     }
 
     nrsec.Close();
 
-    env->ReleaseStringUTFChars(path, pathStr);
+    env->ReleaseStringUTFChars(outputPath, outputPathStr);
     env->ReleaseStringUTFChars(md5, md5Str);
 
     return res ? JNI_TRUE : JNI_FALSE;
@@ -768,7 +772,7 @@ Java_com_xypower_mpapp_MicroPhotoService_importPublicKey(
 
     jbyte* byteCert = env->GetByteArrayElements(cert, 0);
 
-    bool res = nrsec.SM2ImportPublicKey(index, (const uint8_t*)byteCert);
+    bool res = nrsec.SM2ImportPublicKey(index, (const uint8_t*)byteCert) == 0;
 
     nrsec.Close();
 
@@ -784,12 +788,11 @@ 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::setSpiMode(SPI_MODE_3);
+    //GpioControl::setSpiBitsPerWord(8);
+    //GpioControl::setSpiMaxSpeedHz(33000000);
 
     const char *path = NRSEC_PATH;
 
@@ -834,7 +837,7 @@ Java_com_xypower_mpapp_MicroPhotoService_requestCert(
         JNIEnv* env, jclass cls, jint type, jint index, jstring subject, jstring outputPath) {
 
 #ifdef USING_NRSEC
-    if (env->GetStringUTFLength(subject) || env->GetStringUTFLength(outputPath))
+    if (env->GetStringUTFLength(subject) <=0 || env->GetStringUTFLength(outputPath) <=0)
     {
         return JNI_FALSE;
     }
@@ -849,7 +852,9 @@ Java_com_xypower_mpapp_MicroPhotoService_requestCert(
     uint8_t output[1024] = { 0 };
     uint16_t len = 0;
     const char* subjectStr = env->GetStringUTFChars(subject, 0);
-    bool res = nrsec.SM2cert(type, index, subjectStr, output, &len) == 0;
+    
+    std::string titleStr(subjectStr);
+    bool res = nrsec.SM2cert(type, index, titleStr, output, &len) == 0;
     nrsec.Close();
     env->ReleaseStringUTFChars(subject, subjectStr);
     if (!res)
@@ -874,30 +879,35 @@ Java_com_xypower_mpapp_MicroPhotoService_requestCert(
 
 extern "C" JNIEXPORT jboolean JNICALL
 Java_com_xypower_mpapp_MicroPhotoService_importPrivateKeyFile(
-        JNIEnv* env, jclass cls, jint index, jstring path, jstring md5) {
+        JNIEnv* env, jclass cls, jint index, jstring outputPath, jstring md5) {
 
 #ifdef USING_NRSEC
-    const char *port = "/dev/spidev0.0";
+
+    if (env->GetStringUTFLength(outputPath)<=0)
+    {
+        return JNI_FALSE;
+    }
+    const char *path = NRSEC_PATH;
 
     NrsecPort nrsec;
-    if (!nrsec.Open(port))
+    if (!nrsec.Open(path))
     {
         return JNI_FALSE;
     }
 
-    const char *pathStr = env->GetStringUTFChars(path, 0);
+    const char *outputPathStr = env->GetStringUTFChars(outputPath, 0);
     const char *md5Str = env->GetStringUTFChars(md5, 0);
 
     bool res = false;
     std::vector<unsigned char> data;
-    if (readFile(pathStr, data) && !data.empty())
+    if (readFile(outputPathStr, data) && !data.empty())
     {
         res = nrsec.SM2ImportPrivateKey(index, &data[0]) == 0;
     }
 
     nrsec.Close();
 
-    env->ReleaseStringUTFChars(path, pathStr);
+    env->ReleaseStringUTFChars(outputPath, outputPathStr);
     env->ReleaseStringUTFChars(md5, md5Str);
 
     return res ? JNI_TRUE : JNI_FALSE;
@@ -907,11 +917,16 @@ Java_com_xypower_mpapp_MicroPhotoService_importPrivateKeyFile(
 
 extern "C" JNIEXPORT jboolean JNICALL
 Java_com_xypower_mpapp_MicroPhotoService_exportPublicKeyFile(
-        JNIEnv* env, jclass cls, jint index) {
+        JNIEnv* env, jclass cls, jint index, jstring outputPath) {
 
 #ifdef USING_NRSEC
-    const char *path = NRSEC_PATH;
 
+    if (env->GetStringUTFLength(outputPath)<=0)
+    {
+        return JNI_FALSE;
+    }
+
+    const char *path = NRSEC_PATH;
     NrsecPort nrsec;
     if (!nrsec.Open(path))
     {
@@ -920,28 +935,41 @@ Java_com_xypower_mpapp_MicroPhotoService_exportPublicKeyFile(
 
     bool res = false;
     std::vector<unsigned char> data(64,0);
-    res = nrsec.SM2ExportPublicKey(index, &data[0]) == 0;
-
-    FILE* file = fopen("/sdcard/device_pbkey.cer", "wb");
-
-    fwrite(&data[0], sizeof(unsigned  char), data.size(), file);
-
-    fclose(file);
-
+    uint8_t len=0;
+    res = nrsec.SM2ExportPublicKey(index, &data[0], &len) == 0;
     nrsec.Close();
+    if (!res)
+    {
+        return JNI_FALSE;
+    }
 
-    return res ? JNI_TRUE : JNI_FALSE;
+    const char* outputPathStr = env->GetStringUTFChars(outputPath, 0);
+    FILE* file = fopen(outputPathStr, "wb");
+    env->ReleaseStringUTFChars(outputPath, outputPathStr);
+    if (file == NULL)
+    {
+        return JNI_FALSE;
+    }
+
+    int bytes = fwrite(&data[0], sizeof(unsigned  char), len, file);
 
+    fclose(file);   
+    return bytes == len ? JNI_TRUE : JNI_FALSE;
 #endif
 }
 
 extern "C" JNIEXPORT jboolean JNICALL
 Java_com_xypower_mpapp_MicroPhotoService_exportPrivateFile(
-        JNIEnv* env, jclass cls, jint index) {
+        JNIEnv* env, jclass cls, jint index, jstring outputPath) {
 
 #ifdef USING_NRSEC
-    const char *path = NRSEC_PATH;
 
+    if (env->GetStringUTFLength(outputPath)<=0)
+    {
+        return JNI_FALSE;
+    }
+
+    const char *path = NRSEC_PATH;
     NrsecPort nrsec;
     if (!nrsec.Open(path))
     {
@@ -950,17 +978,25 @@ Java_com_xypower_mpapp_MicroPhotoService_exportPrivateFile(
 
     bool res = false;
     std::vector<unsigned char> data(64,0);
-    res = nrsec.SM2ExportPrivateKey(index, &data[0]) == 0;
-
-    FILE* Exprvkey_file = fopen("/sdcard/device_prvkey.cer", "wb");
-
-    fwrite(&data[0], sizeof(unsigned  char), data.size(), Exprvkey_file);
-
-    fclose(Exprvkey_file);
-
+    uint8_t len=0;
+    res = nrsec.SM2ExportPrivateKey(index, &data[0],&len) == 0;
     nrsec.Close();
+    if (!res)
+    {
+        return JNI_FALSE;
+    }
 
-    return res ? JNI_TRUE : JNI_FALSE;
+    const char* outputPathStr = env->GetStringUTFChars(outputPath, 0);
+    FILE* file = fopen(outputPathStr, "wb");
+    env->ReleaseStringUTFChars(outputPath, outputPathStr);
+    if (file == NULL)
+    {
+        return JNI_FALSE;
+    }
+
+    int bytes = fwrite(&data[0], sizeof(unsigned  char), len, file);
 
+    fclose(file);
+    return bytes == len ? JNI_TRUE : JNI_FALSE;
 #endif
 }
diff --git a/app/src/main/java/com/xypower/mpapp/MicroPhotoService.java b/app/src/main/java/com/xypower/mpapp/MicroPhotoService.java
index e24d3850..4fd33563 100644
--- a/app/src/main/java/com/xypower/mpapp/MicroPhotoService.java
+++ b/app/src/main/java/com/xypower/mpapp/MicroPhotoService.java
@@ -1140,15 +1140,15 @@ cellSignalStrengthGsm.getDbm();
     public static native void setOtgState(boolean enabled);
     public static native void setCam3V3Enable(boolean enabled);
     public static native String getSerialNumber();
-    public static native boolean importPublicKeyFile(int index, String path, String md5);
+    public static native boolean importPublicKeyFile(int index, String outputPath, String md5);
     public static native boolean importPublicKey(int index, byte cert[]);
     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 importPrivateKeyFile(int index, String path, String md5);
-    public static native boolean exportPublicKeyFile(int index);
-    public static native boolean exportPrivateFile(int index);
+    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);
 
 
     ////////////////////////GPS////////////////////