linux c tpm2.0 通信样例

以下是一个简单的示例程序，展示了如何在Linux下使用C语言与TPM 2.0进行通信。

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <tss2/tss2_sys.h>
#include <tss2/tss2_mu.h>

#define TPM2_RC_SUCCESS 0x000

#define TPM2_HT_TRANSIENT 0x80000000

TSS2_SYS_CONTEXT *sys_context = NULL;

int main(int argc, char **argv) {
    TSS2_RC rc;
    TPM2_HANDLE handle;
    TPM2B_AUTH auth = {0};
    TPM2B_DIGEST policy_digest = {0};
    TPM2B_PUBLIC public = {0};
    TPM2B_PRIVATE private = {0};
    TPM2B_ENCRYPTED_SECRET encrypted_seed = {0};
    TPM2B_DATA qualifying_data = {0};
    TPM2B_NAME name = {0};
    TPM2B_PUBLIC *out_public;
    TPM2B_PRIVATE *out_private;
    TPM2B_CREATION_DATA *creation_data;
    TPM2B_DIGEST *creation_hash;
    TPMT_TK_CREATION *creation_ticket;

    // 创建系统上下文
    rc = Tss2_Sys_Initialize(&sys_context, NULL);
    if (rc != TPM2_RC_SUCCESS) {
        printf("Tss2_Sys_Initialize error: 0x%x\n", rc);
        exit(1);
    }

    // 指定TPM连接方式
    TSS2_TCTI_CONTEXT *tcti_context = NULL;
    rc = Tss2_TctiLdr_Initialize("device:/dev/tpm0", &tcti_context);
    if (rc != TPM2_RC_SUCCESS) {
        printf("Tss2_TctiLdr_Initialize error: 0x%x\n", rc);
        exit(1);
    }
    Tss2_Sys_SetTcti(sys_context, tcti_context);

    // 创建TPM对象
    rc = Tss2_Sys_CreatePrimary(sys_context, TPM2_RH_OWNER, NULL, &auth,
                                &public, &private, &encrypted_seed, &qualifying_data,
                                &handle, &public, &out_private, &creation_data, &creation_hash,
                                &creation_ticket);
    if (rc != TPM2_RC_SUCCESS) {
        printf("Tss2_Sys_CreatePrimary error: 0x%x\n", rc);
        exit(1);
    }

    // 获取TPM对象名称
    rc = Tss2_Sys_ReadPublic(sys_context, handle, NULL, &name, &out_public, &policy_digest);
    if (rc != TPM2_RC_SUCCESS) {
        printf("Tss2_Sys_ReadPublic error: 0x%x\n", rc);
        exit(1);
    }

    printf("TPM object name: ");
    for (int i = 0; i < name.size; i++) {
        printf("%02x", name.name[i]);
    }
    printf("\n");

    // 关闭系统上下文
    Tss2_Sys_Finalize(sys_context);

    return 0;
}

这个示例程序演示了如何连接到TPM，并使用TSS库API来创建TPM对象，获取TPM对象的名称，以及关闭系统上下文。在实际应用中，您需要根据自己的需求进行修改和扩展。