DSP TMS320操作SMEC98SP加密芯片的事例代码,如果需要完整代码(包括加密芯片代码),请到中巨伟业 http://www.sinormous.com/download.html下载 //###########################################################################
//
// FILE: SMEC98SPforTMS320
//
// TITLE: SMEC98SP加密芯片在DSP中的应用
// 深圳市中巨伟业信息科技有限公司
// www.sinormous.com;
// Author:顾万水
// QQ:47583353 #include “DSP2833x_Device.h” // DSP2833x 头文件
#include “DSP2833x_Examples.h” // DSP2833x 例子相关头文件
#include #include
#include “iic_smec98sp.h”
#include “smec98sp.h” /*
1.获取SMEC98SP的UID号, 获取MCU随机数
2.验证PIN
3.内外部认证
4.SHA1=>前置数据^随机数
5.密文读
6.读数据
7.写数据
8.构造算法(PA口数据->密文送加密芯片, 密文返回) 如果直接引用,请将print的调试信息去除
*/ void SMEC_Test(void)
{
/*各种密钥,不会在I2C线路上传输,可以使用同一组.应该将密钥分散存储,防止主控芯片被破解后,被攻击者在二进制码中找到密钥 */
unsigned char InternalKey[16] = {0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,0x0F};//内部认证密钥,必须和SMEC98SP一致
unsigned char ExternalKey[16] = {0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F};//外部认证密钥,必须和SMEC98SP一致
unsigned char SHA1_Key[16] = {0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F}; //哈希算法认证密钥,必须和SMEC98SP一致
unsigned char MKey[16] = {0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F}; //主控密钥,用于产生过程密钥,必须和SMEC98SP一致
unsigned char Pin[8] = {0x55,0x66,0x77,0x88,0x99,0xaa,0xbb,0xcc}; //Pin认证密钥,必须和SMEC98SP一致 unsigned char bSmec98spUid[12] = {0}; //存放SMEC98SP的UID unsigned short RandomSeek; //随机数种子 unsigned char bRandom[8] = {0}; //存放随机数 unsigned char bSessionKey[8] = {0}; //存放过程密钥,过程密钥为临时产生的密钥 unsigned char bDataBuf[64] = {0}; unsigned char ret, bLen; unsigned short i, j; RandomSeek = (unsigned short)time(0); //RandomSeek一定要使用随机的变量,否则主控MCU产生的随机数将是固定植 /*获取SMEC98SP的UID*/ ret = SMEC_GetUid(bSmec98spUid); if(ret) { //printf("SMEC_GetUid -> Error ! "); while(1); } //printf("SMEC_GetUid: "); //PrintHex(bSmec98spUid, 12); //printf(" "); /*将随机数RandomSeek，再做一次随机处理(SMEC98SP的UID作绑定, 使得即使相同情况下,不同的SMEC98SP随机数种子也不同)*/ for(i = 0; i < 6; i += 2) { /*使RandomSeek与SMEC98SP的UID相关*/ j = (bSmec98spUid[i] << 8) + bSmec98spUid[i + 1]; RandomSeek ^= j; } srand(RandomSeek); //printf("RandomSeek: %04x ", RandomSeek); /*PIN码验证*/ ret = SMEC_CheckPin(Pin, (unsigned char)sizeof(Pin)); if(ret) { //printf("SMEC_CheckPin -> Error ! "); while(1); } //printf("SMEC_CheckPin OK ! "); /*内部认证, 主控芯片对SMEC98SP加密芯片合法性判断*/ for(i = 0; i < 8; i ++) { bRandom[i] = (unsigned char) rand(); } ret = SMEC_IntrAuth(InternalKey, bRandom); if(ret) { //printf("SMEC_IntrAuth -> Error ! "); while(1); } //printf("SMEC_IntrAuth OK ! "); /*外部认证, SMEC98SP加密芯片对主控芯片合法性判断*/ ret = SMEC_ExtrAuth(ExternalKey); if(ret) { //printf("SMEC_ExtrAuth -> Error ! "); while(1); } // printf(“SMEC_ExtrAuth OK ! ”); /*SHA1摘要算法认证, 数据长度可自己设定*/ 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 ! "); while(1); } //printf("SMEC_Sha1Auth OK ! "); /*调用加密芯片内部计算圆周长算法*/ bDataBuf[0] = 0x02; ret = SMEC_CircleAlg(bDataBuf, 1, bDataBuf, &bLen); if(ret) { //printf("SMEC_CircleAlg -> Error ! "); while(1); } //printf("SMEC_CircleAlg OK, C = %02x ! ", bDataBuf[0]); /*产生过程密钥,用于后续的Flash数据加密读,及构造的"端口数据运算"*/ for(i = 0; i < 8; i ++) { bRandom[i] = (unsigned char) rand(); } ret = SMEC_GenSessionKey(MKey, bRandom, bSessionKey); if(ret) { //printf("SMEC_GenSessionKey -> Error ! "); while(1); } //printf("SMEC_GenSessionKey OK ! "); /*密文读取Flash数据*/ ret = SMEC_CryptReadFlash(bSessionKey, 0x0000, bDataBuf, 16); if(ret) { //printf("SMEC_CryptReadFlash -> Error ! "); while(1); } //printf("SMEC_CryptReadFlash OK: "); //PrintHex(bDataBuf, 16); /*读取Flash数据*/ ret = SMEC_ReadFlash(0x0000, bDataBuf, 16); if(ret) { //printf("SMEC_ReadFlash -> Error ! "); while(1); } //printf("SMEC_ReadFlash OK: "); //PrintHex(bDataBuf, 16); /*写Flash数据*/ for(i = 0; i < 16; i ++) { bDataBuf[i] = (unsigned char) i; } ret = SMEC_WriteFlash(0x0000, bDataBuf, 16); if(ret) { //printf("SMEC_WriteFlash -> Error ! "); while(1); } //printf("SMEC_WriteFlash OK! "); /*构造"端口数据运算", 可以用实际的PA~PC端口数据*/ bDataBuf[0] = 0x00; bDataBuf[1] = 0x00; ret = SMEC_GpioAlg(bSessionKey, bDataBuf,2, bDataBuf); if(ret) { //printf("SMEC_GpioAlg -> Error ! "); while(1); } //printf("SMEC_GpioAlg OK: "); // PrintHex(bDataBuf, 2); /*调用加密芯片内部计算圆周长算法,并密文在线路上传输*/ bDataBuf[0] = 0x02; ret = SMEC_CircleAlgCrypt(bSessionKey, bDataBuf, 1, bDataBuf, &bLen); if(ret) { //printf("SMEC_CircleAlgCrypt -> Error ! "); while(1); } //printf("SMEC_CircleAlg OK, C = %02x ! ", bDataBuf[0]); } void main(void)
{
InitSysCtrl(); SMEC_I2cInit();
SMEC_Test(); while(1);
} //===========================================================================
// No more.
//===========================================================================