DSP TMS320操作SMEC98SP加密芯片的事例代碼,如果需要完整代碼(包括加密芯片代碼),請到中巨偉業(yè) http://www.sinormous.com/download.html下載

//###########################################################################
//
// FILE: SMEC98SPforTMS320
//
// TITLE: SMEC98SP加密芯片在DSP中的應用
// 深圳市中巨偉業(yè)信息科技有限公司
// www.sinormous.com;
// Author:顧萬水
// QQ:47583353

#include “DSP2833x_Device.h” // DSP2833x 頭文件
#include “DSP2833x_Examples.h” // DSP2833x 例子相關(guān)頭文件
#include

#include <stdlib.h>
#include “iic_smec98sp.h”
#include “smec98sp.h”

/*
1.獲取SMEC98SP的UID號, 獲取MCU隨機數(shù)
2.驗證PIN
3.內(nèi)外部認證
4.SHA1=>前置數(shù)據(jù)^隨機數(shù)
5.密文讀
6.讀數(shù)據(jù)
7.寫數(shù)據(jù)
8.構(gòu)造算法(PA口數(shù)據(jù)->密文送加密芯片, 密文返回)

如果直接引用,請將print的調(diào)試信息去除
*/

void SMEC_Test(void)
{
/*各種密鑰,不會在I2C線路上傳輸,可以使用同一組.應該將密鑰分散存儲,防止主控芯片被破解后,被攻擊者在二進制碼中找到密鑰 */
unsigned char InternalKey[16] = {0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,0x0F};//內(nèi)部認證密鑰,必須和SMEC98SP一致
unsigned char ExternalKey[16] = {0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F};//外部認證密鑰,必須和SMEC98SP一致
unsigned char SHA1_Key[16] = {0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F}; //哈希算法認證密鑰,必須和SMEC98SP一致
unsigned char MKey[16] = {0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F}; //主控密鑰,用于產(chǎn)生過程密鑰,必須和SMEC98SP一致
unsigned char Pin[8] = {0x55,0x66,0x77,0x88,0x99,0xaa,0xbb,0xcc}; //Pin認證密鑰,必須和SMEC98SP一致

unsigned char bSmec98spUid[12] = {0}; //存放SMEC98SP的UID unsigned short RandomSeek; //隨機數(shù)種子 unsigned char bRandom[8] = {0}; //存放隨機數(shù) unsigned char bSessionKey[8] = {0}; //存放過程密鑰,過程密鑰為臨時產(chǎn)生的密鑰 unsigned char bDataBuf[64] = {0}; unsigned char ret, bLen; unsigned short i, j;RandomSeek = (unsigned short)time(0); //RandomSeek一定要使用隨機的變量,否則主控MCU產(chǎn)生的隨機數(shù)將是固定植/*獲取SMEC98SP的UID*/ ret = SMEC_GetUid(bSmec98spUid); if(ret) {//printf("SMEC_GetUid -> Error !\r\n");while(1); } //printf("SMEC_GetUid: "); //PrintHex(bSmec98spUid, 12); //printf("\r\n");/*將隨機數(shù)RandomSeek，再做一次隨機處理(SMEC98SP的UID作綁定, 使得即使相同情況下,不同的SMEC98SP隨機數(shù)種子也不同)*/ for(i = 0; i < 6; i += 2) {/*使RandomSeek與SMEC98SP的UID相關(guān)*/j = (bSmec98spUid[i] << 8) + bSmec98spUid[i + 1];RandomSeek ^= j; } srand(RandomSeek); //printf("RandomSeek: %04x \r\n", RandomSeek);/*PIN碼驗證*/ ret = SMEC_CheckPin(Pin, (unsigned char)sizeof(Pin)); if(ret) {//printf("SMEC_CheckPin -> Error !\r\n");while(1); } //printf("SMEC_CheckPin OK !\r\n");/*內(nèi)部認證, 主控芯片對SMEC98SP加密芯片合法性判斷*/ for(i = 0; i < 8; i ++) {bRandom[i] = (unsigned char) rand(); } ret = SMEC_IntrAuth(InternalKey, bRandom); if(ret) {//printf("SMEC_IntrAuth -> Error !\r\n");while(1); } //printf("SMEC_IntrAuth OK !\r\n");/*外部認證, SMEC98SP加密芯片對主控芯片合法性判斷*/ ret = SMEC_ExtrAuth(ExternalKey); if(ret) {//printf("SMEC_ExtrAuth -> Error !\r\n");while(1); }

// printf(“SMEC_ExtrAuth OK !\r\n”);

/*SHA1摘要算法認證, 數(shù)據(jù)長度可自己設定*/ for(i = 0; i < 16; i ++) {bDataBuf[i] = (unsigned char) rand();//bDataBuf[i] = (unsigned char) i; } ret = SMEC_Sha1Auth(SHA1_Key, (unsigned char)sizeof(SHA1_Key), bDataBuf, 16); if(ret) {//printf("SMEC_Sha1Auth -> Error !\r\n");while(1); } //printf("SMEC_Sha1Auth OK !\r\n");/*調(diào)用加密芯片內(nèi)部計算圓周長算法*/ bDataBuf[0] = 0x02; ret = SMEC_CircleAlg(bDataBuf, 1, bDataBuf, &bLen); if(ret) {//printf("SMEC_CircleAlg -> Error !\r\n");while(1); } //printf("SMEC_CircleAlg OK, C = %02x !\r\n", bDataBuf[0]);/*產(chǎn)生過程密鑰,用于后續(xù)的Flash數(shù)據(jù)加密讀,及構(gòu)造的"端口數(shù)據(jù)運算"*/ for(i = 0; i < 8; i ++) {bRandom[i] = (unsigned char) rand(); } ret = SMEC_GenSessionKey(MKey, bRandom, bSessionKey); if(ret) {//printf("SMEC_GenSessionKey -> Error !\r\n");while(1); } //printf("SMEC_GenSessionKey OK !\r\n");/*密文讀取Flash數(shù)據(jù)*/ ret = SMEC_CryptReadFlash(bSessionKey, 0x0000, bDataBuf, 16); if(ret) {//printf("SMEC_CryptReadFlash -> Error !\r\n");while(1); } //printf("SMEC_CryptReadFlash OK:\r\n"); //PrintHex(bDataBuf, 16);/*讀取Flash數(shù)據(jù)*/ ret = SMEC_ReadFlash(0x0000, bDataBuf, 16); if(ret) {//printf("SMEC_ReadFlash -> Error !\r\n");while(1); } //printf("SMEC_ReadFlash OK:\r\n"); //PrintHex(bDataBuf, 16);/*寫Flash數(shù)據(jù)*/ for(i = 0; i < 16; i ++) {bDataBuf[i] = (unsigned char) i; } ret = SMEC_WriteFlash(0x0000, bDataBuf, 16); if(ret) {//printf("SMEC_WriteFlash -> Error !\r\n");while(1); } //printf("SMEC_WriteFlash OK!\r\n");/*構(gòu)造"端口數(shù)據(jù)運算", 可以用實際的PA~PC端口數(shù)據(jù)*/ bDataBuf[0] = 0x00; bDataBuf[1] = 0x00; ret = SMEC_GpioAlg(bSessionKey, bDataBuf,2, bDataBuf); if(ret) {//printf("SMEC_GpioAlg -> Error !\r\n");while(1); } //printf("SMEC_GpioAlg OK:\r\n");

// PrintHex(bDataBuf, 2);

/*調(diào)用加密芯片內(nèi)部計算圓周長算法,并密文在線路上傳輸*/ bDataBuf[0] = 0x02; ret = SMEC_CircleAlgCrypt(bSessionKey, bDataBuf, 1, bDataBuf, &bLen); if(ret) {//printf("SMEC_CircleAlgCrypt -> Error !\r\n");while(1); } //printf("SMEC_CircleAlg OK, C = %02x !\r\n", bDataBuf[0]);

}

void main(void)
{
InitSysCtrl();

SMEC_I2cInit();
SMEC_Test();

while(1);
}

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