diff --git a/app/src/main/cpp/SpiLib.cpp b/app/src/main/cpp/SpiLib.cpp
index c0f07fa..30ec2b6 100644
--- a/app/src/main/cpp/SpiLib.cpp
+++ b/app/src/main/cpp/SpiLib.cpp
@@ -1,23 +1,5 @@
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <fcntl.h>
-#include <string.h>
-
-#include <string>
-#include <thread>
-#include <sys/ioctl.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#include <linux/types.h>
-#include <linux/spi/spidev.h>
-
-#include <android/log.h>
 #include "SpiLib.h"
-using namespace std;
 
-#define CMD_HEAD_SIZE           5
 //typedef unsigned char u8;
 
 #define  RE_SUC   0x01
@@ -166,8 +148,12 @@ void SpiLIb::RcvLEN(int fd, u8 *txbuf, u8 *buf, u8 len)
     int retval;
     /* receive length */
     LEN:
-    retval = spi_transfer(fd, txbuf, buf, 1);
-    __android_log_print(ANDROID_LOG_INFO, "SPiLEN", "txbuf=%x,rxbuf=%hhu", *txbuf,*buf);
+    for(int i=0;i<len;i++){
+        txbuf[0]=0xaa;
+        retval = spi_transfer(fd, txbuf, buf+i, 1);
+        __android_log_print(ANDROID_LOG_INFO, "SPiLEN", "txbuf=%x,rxbuf=%x", *txbuf,*(buf+i));
+    }
+
 }
 
 //Rcvdata
@@ -184,6 +170,20 @@ void SpiLIb::RcvData(int fd, u8 *txbuf, u8 *buf)
         __android_log_print(ANDROID_LOG_INFO, "SPiDATA", "data[%d]=%x",i, *(buf+i));
     }
 }
+void SpiLIb::RcvData(int fd, u8 *txbuf, u8 *buf,int len)
+{
+    int i;
+    int retval;
+
+    /* receive data and crc */
+    for(i=0; i<len; i++)
+    {
+
+        retval = spi_transfer(fd, txbuf, buf+i, 1);
+        __android_log_print(ANDROID_LOG_INFO, "SPiDATA", "data[%d]=%x",i, *(buf+i));
+    }
+}
+
 
 
 //RcvSW
@@ -1130,6 +1130,95 @@ int SpiLIb::SM2decoder(int index,unsigned char *to_decoder ,unsigned char *out_d
     return 0;
 }
 
+int SpiLIb::SM2cert(int type,int index,string cert,unsigned char *out_cert)//证书
+{
+    int i;
+    int cnt;
+    unsigned char txbuf[512];
+    unsigned char rxbuf[1024];
+
+    int retval;
+    int msglen;
+    int fd;
+    const char *devname = "/dev/spidevSE";
+    //const char *devname = "/dev/spidev0.0";
+    //const char *devname = "/dev/mtkgpioctrl";
+
+    //  NrsecSpiPort spi("/dev/spidevSE");
+    //
+    //    // NrsecSpiPort spi("/dev/spidev0.0")
+    fd = open(devname, O_RDWR);
+    if (fd < 0) {
+        perror("open");
+        return 1;
+    }
+    spi_master_init(devname, fd);
+
+
+    msglen = 5;
+    memset(rxbuf, 0, sizeof(rxbuf));
+    memset(txbuf, 0, sizeof(txbuf));
+
+    //printf("tx %1d bytes: ", msglen);
+
+    int certlen=cert.length();
+    unsigned char to_cert[certlen];
+    for(int x=0;x<certlen;x++){
+        to_cert[x]=cert[x];
+    }
+    SM2cert_CMD[2]=type;
+    SM2cert_CMD[3]=index;
+    SM2cert_CMD[4]=certlen;
+
+    CMD_RESEND:
+
+    memcpy(txbuf, (const void *) SM2cert_CMD, sizeof(SM2cert_CMD));
+
+    SendCmdHeader(fd, txbuf, rxbuf);
+
+    RcvINS(fd,txbuf,rxbuf,txbuf[1]);
+
+    SendId(fd,txbuf,rxbuf, 0x55);
+
+    memcpy(txbuf, to_cert, certlen);
+
+    SendData(fd, txbuf, rxbuf,certlen);
+
+    SendEnd(fd,txbuf,rxbuf);
+
+    memcpy(txbuf, (const void *) SM2cert_CMD, sizeof(SM2cert_CMD));
+
+    RcvINS(fd,txbuf,rxbuf,txbuf[1]);
+
+    RcvLEN(fd,txbuf,rxbuf+1, 2);
+
+    int re[4]={0};
+    int x = 0;
+    int a=rxbuf[1];
+    while (a != 0) {
+        re[x] = a % 16;
+        a /= 16;
+        x++;
+    }
+
+    int outlen=re[0]*256+re[1]*4096+rxbuf[2];
+
+    RcvData(fd, txbuf, rxbuf+2,outlen);
+
+    RcvSW(fd, txbuf, rxbuf+2+rxbuf[1], 0x90);
+
+    //__android_log_print(ANDROID_LOG_INFO, "SPi", "rx %1d bytes:", rxbuf[1]+4);
+
+    for (i = 2; i < outlen+2; i++) {
+        //sprintf(output, " %02x ", rxbuf[i]);
+        out_cert[i-2]= rxbuf[i];
+    }
+
+    close(fd);
+    return 0;
+}
+
+
 
 
 
diff --git a/app/src/main/cpp/SpiLib.h b/app/src/main/cpp/SpiLib.h
index 2f2521a..d806ecb 100644
--- a/app/src/main/cpp/SpiLib.h
+++ b/app/src/main/cpp/SpiLib.h
@@ -1,5 +1,24 @@
 #ifndef TESTCOMM_SPILIB_H
 #define TESTCOMM_SPILIB_H
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <string.h>
+#include <string>
+#include <thread>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <linux/types.h>
+#include <linux/spi/spidev.h>
+
+#include <android/log.h>
+
+using namespace std;
+
+#define CMD_HEAD_SIZE           5
 using namespace std;
 typedef unsigned char u8;
 
@@ -19,6 +38,7 @@ public:
     int SM2VerifySign(int index,unsigned char *hash,unsigned char *vs);
     int SM2encrypt(int index,unsigned char *to_encrypt ,unsigned char *out_encrypt);
     int SM2decoder(int index,unsigned char *to_decoder ,unsigned char *out_decoder);
+    int SM2cert(int type,int index,string cert,unsigned char *out_cert);
 
 
 
@@ -85,6 +105,7 @@ private:
     void RcvINS(int fd, u8 *txbuf, u8 *buf, u8 ins);
     void RcvLEN(int fd, u8 *txbuf, u8 *buf, u8 len);
     void RcvData(int fd, u8 *txbuf, u8 *buf);
+    void RcvData(int fd, u8 *txbuf, u8 *buf, int len);
     void RcvSW(int fd, u8 *txbuf, u8 *buf, u8 sw);
     void SendEnd(int fd, u8 *txbuf, u8 *buf);
     void SendId(int fd, u8 *txbuf, u8 *buf, u8 id);
@@ -92,8 +113,6 @@ private:
 
 
 
-
-
 };
 
 
diff --git a/app/src/main/cpp/native-lib.cpp b/app/src/main/cpp/native-lib.cpp
index a1ebc1f..2ddafe7 100644
--- a/app/src/main/cpp/native-lib.cpp
+++ b/app/src/main/cpp/native-lib.cpp
@@ -71,31 +71,36 @@ Java_com_xinyingpower_testcomm_MainActivity_testSpi(
         jobject /* this */, jint port) {
     //testSpi();
     SpiLIb a;
-    unsigned char newkey[64]={0xaf,0x0c,0xa9,0x40,0x1f,0xe6,0xee,0x0f,0x4c,
+    unsigned char newkey[32]={0xaf,0x0c,0xa9,0x40,0x1f,0xe6,0xee,0x0f,0x4c,
                                      0xfb,0xf7,0x17,0x71,0xde,0x61,0x59
                                      ,0x0a,0x05,0x77,
                                      0xfa,0xe7,0xd1,0x8d,0x10,0x3a,0x79,0x23,0xf2,0xb3,
-                                     0x6d,0xea,0x8e,0xe0,0x64,0xe7,0x5d,0x49,0x84,0xe4,
-                                     0x5f,0xc9,0x07,0x03,0x52,0x33,0x79,0x87,0xd4,0x62,
-                                     0x62,0xc0,0xcc,0xf0,0xd6,0x85,0x20,0x7f,0x7a,0xe8,
-                                     0xc8,0xed,0x12,0xdb,0xdc
+                                     0x6d,0xea,0x8e
+//                                     ,0xe0,0x64,0xe7,0x5d,0x49,0x84,0xe4,
+//                                     0x5f,0xc9,0x07,0x03,0x52,0x33,0x79,0x87,0xd4,0x62,
+//                                     0x62,0xc0,0xcc,0xf0,0xd6,0x85,0x20,0x7f,0x7a,0xe8,
+//                                     0xc8,0xed,0x12,0xdb,0xdc
     };
-    unsigned char outpub[32],outsign[64];
+    unsigned char outpub[32],outsign[64], *outen = new unsigned char [256];
     unsigned char pucid[16]={0x01,0x01,0x01,0x01,0x01,0x01,0x01,
                              0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01};
+    string b="C=CN,ST=jiangsu,L=nanjing,O=GDD,OU=nari,CN=test001";
     //a.SM2keypair(0x00);
     //a.SM3Hash(newkey,16, outpub);
-    a.sm3hash_tosm2(newkey,16,outpub,newkey,pucid,16);
-    a.SM2Sign(0x00,outpub,outsign);
-    a.SM2VerifySign(0x00,outpub,outsign);
+    //a.sm3hash_tosm2(newkey,16,outpub,newkey,pucid,16);
+    //a.SM2Sign(0x00,outpub,outsign);
+    //a.SM2VerifySign(0x00,outpub,outsign);
+    a.SM2cert(0x00,0x00,b,outen);
     for (int i = 0; i < 32; i++) {
         //sprintf(output, " %02x ", rxbuf[i]);
-        __android_log_print(ANDROID_LOG_INFO, "SPi", "%02x", outpub[i]);
-    }
-    for (int i = 0; i < 64; i++) {
-        //sprintf(output, " %02x ", rxbuf[i]);
-        __android_log_print(ANDROID_LOG_INFO, "SPi", "%02x", outsign[i]);
+        __android_log_print(ANDROID_LOG_INFO, "SPi", "%02x", outen[i]);
     }
+//    a.SM2decoder(0x00,outen,outpub);
+//
+//    for (int i = 0; i < 64; i++) {
+//        //sprintf(output, " %02x ", rxbuf[i]);
+//        __android_log_print(ANDROID_LOG_INFO, "SPi", "%02x", outpub[i]);
+//    }
 
     //a.SM3Hash(0x00,0x10,newkey);
     //testVersion();