Question

我正在尝试使用TI提供的加密库来使用cc2650 sensortag上的硬件AES模块。不幸的是，只要AesInit被执行或我的脚本中有任何其他空白，我的代码就会陷入无限循环。但是，代码编译的信息很好。我怀疑这是由于一些内存或中断问题。我的问题如下：

我的文件中是否遗漏了任何头文件或依赖项？
是否有任何简单的aes硬件实现可供cc26xx使用？
知道如何修复我的代码吗？

我的代码如下：

/* Contiki Headers */
#include "contiki.h"
#include "sys/ctimer.h"
#include "dev/leds.h"
#include "random.h"
#include "net/ip/uip.h"
#include "net/ipv6/uip-ds6.h"
#include "net/netstack.h"
#include "clock.h"

/* CC2650 Specific Headers */
#include "lpm.h"
#include "ti-lib.h"
#include "dev/watchdog.h"
#include "lib/cc26xxware/driverlib/gpio.h"
#include "button-sensor.h"
#include "batmon-sensor.h"
#include "board-peripherals.h"

/* Crypto APIs Header */
#include <driverlib/crypto.h>

#define PRINTF(...) printf(__VA_ARGS__)

/* Define functions */
void uint8_print(char *hint,uint8_t *data, int size){
  PRINTF(hint);
  for(uint8_t i = 0; i < size; i++) {
        PRINTF("%02X ", data[i]);
  }
  PRINTF("\r\n");
}

void AesInit( void ) {
  HWREG(CRYPTO_BASE + CRYPTO_O_IRQTYPE) |= 0x00000001;
  HWREG(CRYPTO_BASE + CRYPTO_O_IRQEN) |= 0x00000003;
}

void HW_KeyInit( uint8_t *AesKey ) {
  CRYPTOAesLoadKey( (uint32_t *)AesKey, 0);
}

void AesEncryptHW( uint8_t *AesKey, uint8_t *Cstate ) {
  CRYPTOAesEcb( (uint32_t *)Cstate, (uint32_t *)Cstate, 0, true, false);
  /* wait for completion of the operation */
  do { __asm("nop"); } while(CRYPTOAesEcbStatus());
  CRYPTOAesEcbFinish();
}

void AesDecryptHW( uint8_t *AesKey, uint8_t *Cstate ) {
  CRYPTOAesEcb( (uint32_t *)Cstate, (uint32_t *)Cstate, 0, false, false);
  /* wait for completion of the operation */
  do { __asm("nop"); } while(!(CRYPTOAesEcbStatus()));
  CRYPTOAesEcbFinish();
}

void AesEncryptHW_keylocation(uint8_t *msg_in, uint8_t *msg_out, uint8_t key_location ) {
  CRYPTOAesEcb( (uint32_t *)msg_in, (uint32_t *)msg_out, key_location, true, false);
  /* wait for completion of the operation */
  do { __asm("nop"); } while(!(CRYPTOAesEcbStatus()));
  CRYPTOAesEcbFinish();
}

void AesDecryptHW_keylocation( uint8_t *msg_in, uint8_t *msg_out, uint8_t key_location ){
  CRYPTOAesEcb( (uint32_t *)msg_in, (uint32_t *)msg_out, key_location, false, false);
  /* wait for completion of the operation */
  do { __asm("nop");  } while(CRYPTOAesEcbStatus());
  CRYPTOAesEcbFinish();
}

/*---------------------------------------------------------------------------*/
PROCESS(test_process, "Test process");
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(test_process, ev, data)
{
    PROCESS_BEGIN();
    printf("\r\nDEBUG: Process started\r\n ");

    uint8_t ui8MsgOut[16];
    uint8_t ui8MsgIn[16]   = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff};
    uint8_t ciphertext[16] = {0x69, 0xc4, 0xe0, 0xd8, 0x6a, 0x7b, 0x04, 0x30, 0xd8, 0xcd, 0xb7, 0x80, 0x70, 0xb4, 0xc5, 0x5a};
    uint8_t ui8AesKey[16]  = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f};

    AesInit();
    PRINTF("AesInit done\n");
    HW_KeyInit( ui8AesKey );
    PRINTF("HW_KeyInit done\n");

    uint8_print("Start Key:    ",ui8AesKey, 16);
    uint8_print("Start MsgIn:  ",ui8MsgIn, 16);
    uint8_print("Start MsgOut: ",ui8MsgOut, 16);

    AesEncryptHW( ui8AesKey, ui8MsgIn );
    uint8_print("Start Key:    ",ui8AesKey, 16);
    uint8_print("Start MsgIn:  ",ui8MsgIn, 16 );

    AesDecryptHW( ui8AesKey, ui8MsgIn );
    uint8_print("Start Key:    ",ui8AesKey, 16);
    uint8_print("Start MsgOut: ",ui8MsgIn, 16 );

    AesEncryptHW_keylocation(ui8MsgIn, ui8MsgOut, 0 );
    AesDecryptHW_keylocation(ui8MsgIn, ui8MsgOut, 0 );

    uint8_print("Start Key:    ",ui8AesKey, 16);
    uint8_print("Start MsgIn:  ",ui8MsgIn, 16);
    uint8_print("Start MsgOut: ",ui8MsgIn, 16);

    printf("\r\nDEBUG: Process ended\r\n ");
    PROCESS_END();
}
AUTOSTART_PROCESSES(&test_process);

如果我发表评论AesInit，代码仍会卡在HW_KeyInit中，依此类推。我真的很感激任何建议，暗示或帮助。

TI cc26xx aes硬件实现代码不断陷入困境

0 个答案: