ap/lib/libkey/auth_device_key.c

/************************************************************************
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*ÐÞ¸ÄÈÕ£º2019/9/20
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*°æ±¾ºÅ£ºv1.0
************************************************************************/
#include <stdio.h>
#include <unistd.h>
#include <getopt.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <strings.h>
#include <sys/types.h>
#include <assert.h>
#include "os_type_def.h"
#include "RONvParam_AMT.h"
#include "libcpnv.h"

int auth_device_key_init_value(void)
{
	/*³õʼֵΪ0´ò¿ªÑз¢Ä£Ê½ÐèÃÜÂëÇл»¹¦ÄÜ£¬Ä¬ÈÏΪ1²»´ò¿ª*/
	//return 0;
	return 1;
}

int verify_device_key(char *device_key,int key_len,char *seed,int seed_len)
{
	int verify_result = auth_device_key_init_value();
	//char myInit[16] = "ZXIC-TSP";
	
	//»ñÈ¡IMEIºÅ
	unsigned int retCode =  CPNV_ERROR;
    unsigned char imei_bcd[8]= {0};
	int abImeiindex = 0,imeistrindex = 0;
    char imeistr[2*8] = {0};
	int i = 0;

	if((device_key == NULL)||(key_len != 6)||(seed == NULL)||(seed_len != 8))
	{
    	printf("parameter error!\r\n");
		return verify_result;
	}
	printf("parameter device key = %s,key_len=%d,seed = %s,seed_len=%d\r\n",device_key,key_len,seed,seed_len);
	retCode = cpnv_NvItemRead(OS_FLASH_AMT_COMM_RO_IMEI_ADDRESS, (unsigned char *)imei_bcd, OS_FLASH_AMT_COMM_RO_IMEI_SIZE);
    printf("retCode = %d\r\n",retCode );
    if(CPNV_ERROR == retCode )
    {
        printf("read imei fail!\r\n");
        return verify_result; //»ñÈ¡imeiºÅʧ°Ü
    }
    #if 0
	for (i = 0; i < sizeof(imei_bcd); i++)
	{
		printf("imei_bcd[%d] = %02x\r\n",i,imei_bcd[i]);
	}
    
    for (abImeiindex=0; abImeiindex< 8-1; abImeiindex++,imeistrindex+=2)
    {
        imeistr[imeistrindex] = (imei_bcd[abImeiindex]&0x0F) + '0';
        imeistr[imeistrindex+1] = ((imei_bcd[abImeiindex]&0xF0)>>4)+ '0';
    }
    
    imeistr[2*8-2]=(imei_bcd[8-1]&0x0F)+ '0';
    imeistr[2*8-1] = '\0';

	printf("imei = %s\r\n",imeistr);
	#endif
	
    imei_bcd[7] |= 0xF0;
	for (i = 0; i < sizeof(imei_bcd); i++)
	{
		imei_bcd[i] += seed[i];
	}

	for (i = 0; i < sizeof(imei_bcd); i++)
	{
		printf("imei_bcd[%d] = %02x\r\n",i,imei_bcd[i]);
	}

	unsigned int crc = crc32(0, imei_bcd, sizeof(imei_bcd));
	printf("crc = %02x\r\n",crc);

	char buf[16] = { 0 };

	for (i = 0; i < 8; i++)
	{
		buf[i] = ((crc >> (28 - i * 4)) & 0xF);
		if (buf[i] > 9)
		{
			buf[i] = buf[i] + 'A' - 10;
		}
		else
		{
			buf[i] = buf[i] + '0';
		}
	}

	//printf("buf = %s\r\n",buf);

	printf("current device key = %s\r\n",buf+2);

	if(strcmp(buf+2,device_key)== 0)
	{
		verify_result = 1;
		printf("verify device key success!verify_result=%d\r\n",verify_result);
	}
	else
	{
		printf("verify device key fail!verify_result=%d\r\n",verify_result);
	}
	
	return verify_result;
}