diff --git a/cr_hsm_code.c b/cr_hsm_code.c
index bac29c2..7103a09 100644
--- a/cr_hsm_code.c
+++ b/cr_hsm_code.c
@@ -156,11 +156,19 @@ int hsm_initialize( void )
 	int ret_code = CR_GENID_SUCCESS;
 
 	// TODO: HSMリセットを入れる。
+	ret_code = hsm_reset_module();
+	if ( ret_code != CR_GENID_SUCCESS )
+	{
+		SetErrorInfo( __FUNCTION__, __LINE__ );
+		return ret_code;
+	}
+	
 	
 	// init HSM
 	ret_code = NFastApp_InitEx( &hsmHandle, NULL, NULL );
 	if ( ret_code != CR_GENID_SUCCESS )
 	{
+		SetErrorInfo( __FUNCTION__, __LINE__ );
 		return ret_code;
 	}
 
@@ -240,6 +248,37 @@ void hsm_finalize( void )
 	NFastApp_Finish( hsmHandle, NULL );
 }	// hsm_finalize
 
+int hsm_reset_module( void )
+{
+	int ret_code = CR_GENID_SUCCESS;
+	M_Command cmd;
+	M_Reply reply;
+	
+	memset( &cmd, 0, sizeof( cmd ) );
+	memset( &reply, 0, sizeof( reply ) );
+	
+	cmd.cmd = Cmd_ClearUnit;
+	cmd.args.clearunit.module = HSM_MODULE_ID;
+	
+	ret_code = NFastApp_Transsct( hsmConnection, NULL, &cmd, &reply, NULL );
+	if ( ret_code != CR_GENID_SUCCESS )
+	{
+		SetErrorInfo( __FUNCTION__, __LINE__ );
+		return ret_code;
+	}
+	ret_code = reply.status;
+	if ( ret_code != CR_GENID_SUCCESS )
+	{
+		SetErrorInfo( __FUNCTION__, __LINE__ );
+		return ret_code;
+	}
+	
+	NFastApp_Free_Command( hsmHandle, NULL, NULL, &cmd );
+	NFastApp_Free_Reply( hsmHandle, NULL, NULL, &reply );
+	
+	return ret_code;
+}	// hsm_reset_module
+
 int hsm_generate_random( unsigned char *buf, int bytes )
 {
 	int ret_code = CR_GENID_SUCCESS;
diff --git a/cr_hsm_code.h b/cr_hsm_code.h
index ab5df96..b62baf3 100644
--- a/cr_hsm_code.h
+++ b/cr_hsm_code.h
@@ -121,6 +121,7 @@ extern "C" {
 // functions
 int hsm_initialize( void );
 void hsm_finalize( void );
+int hsm_reset_module( void );
 int hsm_generate_random( unsigned char *buf, int bytes );
 int hsm_get_rtc( time_t *time );
 int hsm_aes_encrypt( unsigned char *dst_buf, unsigned char *org_buf, int size, unsigned char bondingOption );