TPM环境

1.安装TPM模拟器

下载安装包：https://developer.berlios.de/project/showfiles.php?group_id=2491
解压后README文件为安装和使用的说明
# tar -xvzf tpm_emulator-X.Y.tar.gz
# cd tpm_emulator-X.Y
# mkdir build
# cd build
# cmake ../
# make
# make install
2.TPM使用
(1)初始化：
#sudo tpmd deactivated
#killall tpmd
#tpmd clear
#rm /var/run/tpm/tpmd_socket:0（出现failed：address alread in use 时执行它）
(2)启动：
#sudo modprobe tpmd_dev（将该模块加入内核，如出现Module tpmd_dev not found ,则先运行depmod -a）
#tpmd -f -d clear（加clear清除之前的状态，防止出错-----其中-f选项会显示你发送给tpmd的命令，这样就可以看到对应函数执行时具体会使用哪个TPM命令）
当观察到Debug：waiting for connections就证明运行成功了。
注：tpmd是用户空间的deamon实现TPM模拟，通过Socket实现访问
tpmd_dev内核模块提供模拟硬件/dev/tpm，用于后台的兼容性和前台命令接收
tddl是tpm驱动库，用于提供模块接口（使用tddl函数接口编程时建议使用参数f，这样就可以看到对应函数执行时具体会使用哪个tpm命令，便于理解）

3.安装trousers(TSS软件栈)
（1）由于使用TPM模拟器，在编译trousers前需要将其原来的tddl库改为TPM模拟器提供的tddl。
注意：不同的发行版，libtddl.so的位置不同，安装前需要查看自己的libtddl.so位置再修改。

修改 ./src/tcsd/Makefile.am ：
tcsd_LDADD=../tcs/libtcs.a ../tddl/libtddl.a –lpthread
为：
tcsd_LDADD=../tcs/libtcs.a /usr/lib/libtddl.so –lpthread
修改 ./src/tcsd/Makefile.in ：
tcsd_DEPENDENCIES = ../tcs/libtcs.a ../tddl/libtddl.a
为：
tcsd_DEPENDENCIES = ../tcs/libtcs.a /usr/lib/libtddl.so

（2）检查trousers是否安装成功
#sudo modprobe tpm_tis
用lsmod | grep tpm查看是否存在相应的模块
（3）启动TCSD
#sudo tcsd start

4.安装tpm-tools，tpmmanager等
（1）tpmmanager运行命令：
#tpmmanager

附：
TPM emulator测试程序（测试TPM模拟器是否安装成功）

#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#define TPM_TAG_RQU_COMMAND 193
#define TPM_TAG_RQU_AUTH1_COMMAND 194
#define TPM_ORD_SHA1Start 160
#define TPM_ORD_SHA1Complete 162
#define TPM_ORD_GetRandom 70

int main(int argc, char **argv)
{
unsigned int i,j,fd;
int res,ret;
unsigned char buf[256];

int buf_size = sizeof(buf);
unsigned char random_cmd[] = {0, TPM_TAG_RQU_COMMAND,
0, 0, 0, 14,
0, 0, 0, TPM_ORD_GetRandom,
0, 0, 0, 8};//70 means TPM_ORD_GetRandom

unsigned char tpm_sha1start[]={0,TPM_TAG_RQU_COMMAND,
0,0,0,10,
0,0,0,TPM_ORD_SHA1Start};

unsigned char tpm_sha1complete[]={0,TPM_TAG_RQU_COMMAND,
0,0,0,78,0,0,0,TPM_ORD_SHA1Complete,
0,0,0,64,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,
33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64};

fd = open("/dev/tpm0",O_RDWR);
if(fd < 0){
printf("Error: Open() failed: (%04x)\n ", fd);
return -1;
}

printf("sizeof(random_cmd): %d\n", sizeof(random_cmd));
printf("data in random_cmd: ");
for(i = 0; i < sizeof(random_cmd); i++)
printf("%02x", random_cmd[i]);
printf("\n");

res = write(fd, random_cmd, sizeof(random_cmd));

if(res != sizeof(random_cmd)){
printf("Error: write random command failed: (%04x)\n ", res);
close(fd);
return -1;
}

buf_size = 256;
ret = read(fd, &buf, buf_size);

printf("ret of read random tpm0: %d\n",ret);
printf("read tpm0 random data: ");
for(i = 0; i < ret; i++){
printf("%02x ",buf[i] );
}
printf("\n");

buf_size = 256;//buf_size > 10

printf("sizeof(tpm_sha1start): %d\n", sizeof(tpm_sha1start));
printf("data in tpm_sha1start: ");
for(i = 0; i < sizeof(tpm_sha1start); i++)
printf("%02x", tpm_sha1start[i]);
printf("\n");
res =write(fd, tpm_sha1start, sizeof(tpm_sha1start));

if(res != sizeof(tpm_sha1start)){
printf("Error: write tpm_sha1start failed: (%04x)\n ", res);
close(fd);
return -1;
}

buf_size = 256;
ret = read(fd, &buf, buf_size);

printf("ret of read tpm0 after tpm_sha1start : %d\n",ret);
printf("read tpm0 tpm_sha1start data: ");
for(i = 0; i < ret; i++){
printf("%02x ",buf[i] );
}
printf("\n");

buf_size = 256;//buf_size > 10

printf("sizeof(tpm_sha1complete): %d\n", sizeof(tpm_sha1complete));
printf("data in tpm_sha1complete: ");
for(i = 0; i < sizeof(tpm_sha1complete); i++)
printf("%02x", tpm_sha1complete[i]);
printf("\n");

res =write(fd, tpm_sha1complete, sizeof(tpm_sha1complete));

if(res != sizeof(tpm_sha1complete)){
printf("Error: write tpm_sha1complete failed: (%04x)\n ", res);
close(fd);
return -1;
}

buf_size = 256;
ret = read(fd, &buf, buf_size);

printf("ret of read tpm0 after tpm_sha1complete : %d\n",ret);
printf("read tpm0 data after tpm_sha1complete : ");
for(i = 0; i < ret; i++){
printf("%02x ",buf[i] );
}
printf("\n");

close(fd);

return 0;
}

结果：

sizeof(random_cmd): 14
data in random_cmd: 00c10000000e0000004600000008
ret of read random tpm0: 22
read tpm0 random data: 00 c4 00 00 00 16 00 00 00 00 00 00 00 08 20 c2 10 97 bf cb c3 ec
sizeof(tpm_sha1start): 10
data in tpm_sha1start: 00c10000000a000000a0
ret of read tpm0 after tpm_sha1start : 14
read tpm0 tpm_sha1start data: 00 c4 00 00 00 0e 00 00 00 00 00 00 08 00
sizeof(tpm_sha1complete): 78
data in tpm_sha1complete:00c10000004e000000a2000000400102030405060708090a0b0c0d0e0f10111213141516171819
1a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f40
ret of read tpm0 after tpm_sha1complete : 30
read tpm0 data after tpm_sha1complete : 00 c4 00 00 00 1e 00 00 00 00 92 cb 89 df 62 d9 00 b3 50 d9 3e 42 25 ca 6f 08 1d 54 7a 28