evictkey.c

来自「IBM开发的TPM的驱动, 有少量的例子可以供参考」· C语言 代码 · 共 78 行

/****************************************************************************/
/*                                                                          */
/*                                Evict Key                                 */
/*                                                                          */
/*                           Written by J. Kravitz                          */
/*                                                                          */
/*                     IBM Thomas J. Watson Research Center                 */
/*                                                                          */
/*                               Version 1.0                                */
/*                                                                          */
/*                         Last Revision 11 Feb 2004                        */
/*                                                                          */
/*                           Copyright (C) 2004 IBM                         */
/*                                                                          */
/****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <netinet/in.h>
#include "tpmfunc.h"

int main(int argc, char *argv[])
{
	int ret;
	uint32_t handle;
	unsigned char listbuff[1024];
	uint32_t listlen;
	int i;
	int listsize;
	int offset;

	if (argc < 2) {
		fprintf(stderr,
			"Usage: evictkey <key handle in hex>| all\n");
		exit(1);
	}
	TPM_setlog(0);
	if (strcasecmp("all", argv[1]) == 0) {
		/* must evict all keys */
		ret =
		    TPM_GetCapability(0x0000007, NULL, 0,
				      (unsigned char *) listbuff,
				      &listlen);
		if (ret != 0) {
			fprintf(stderr,
				"Error %x from TPM_GetCapability\n", ret);
			exit(1);
		}
		listsize = LOAD16(listbuff, 0);
		offset = 2;
		for (i = 0; i < listsize; ++i) {
			handle = LOAD32(listbuff, offset);
			ret = TPM_EvictKey(handle);
			if (ret == 0)
				printf("Evicted key handle %08X\n",
				       handle);
			else
				printf
				    ("Error %s attempting to Evict key handle %08X\n",
				     TPM_GetErrMsg(ret), handle);
			offset += 4;
		}
		exit(0);
	}
	ret = sscanf(argv[1], "%x", &handle);
	if (ret != 1) {
		fprintf(stderr, "Invalid argument '%s'\n", argv[1]);
		exit(2);
	}
	ret = TPM_EvictKey(handle);
	if (ret != 0) {
		fprintf(stderr, "Error %s from TPM_EvictKey\n",
			TPM_GetErrMsg(ret));
		exit(1);
	}
	exit(0);
}