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//**********************************************************************;
// Copyright (c) 2017, Intel Corporation
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of Intel Corporation nor the names of its contributors
// may be used to endorse or promote products derived from this software without
// specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
//**********************************************************************;
#include <sapi/tpm20.h>
#include <stdbool.h>
#include <unistd.h>
#include "tpm2_plugin_api.h"
#include "log.h"
#include "tpm2_tcti_ldr.h"
const char *tcti_path="libtcti-device.so";
static void tcti_teardown (TSS2_TCTI_CONTEXT *tcti_context)
{
Tss2_Tcti_Finalize (tcti_context);
free (tcti_context);
}
static void sapi_teardown (TSS2_SYS_CONTEXT *sapi_context)
{
if (sapi_context == NULL)
return;
Tss2_Sys_Finalize (sapi_context);
free (sapi_context);
}
static void sapi_teardown_full (TSS2_SYS_CONTEXT *sapi_context)
{
TSS2_TCTI_CONTEXT *tcti_context = NULL;
TSS2_RC rc;
rc = Tss2_Sys_GetTctiContext (sapi_context, &tcti_context);
if (rc != TPM2_RC_SUCCESS)
return;
sapi_teardown (sapi_context);
tcti_teardown (tcti_context);
}
static TSS2_SYS_CONTEXT* sapi_ctx_init(TSS2_TCTI_CONTEXT *tcti_ctx)
{
TSS2_ABI_VERSION abi_version = {
.tssCreator = TSSWG_INTEROP,
.tssFamily = TSS_SAPI_FIRST_FAMILY,
.tssLevel = TSS_SAPI_FIRST_LEVEL,
.tssVersion = TSS_SAPI_FIRST_VERSION,
};
size_t size = Tss2_Sys_GetContextSize(0);
TSS2_SYS_CONTEXT *sapi_ctx = (TSS2_SYS_CONTEXT*) calloc(1, size);
if (sapi_ctx == NULL) {
LOG_ERR("Failed to allocate 0x%zx bytes for the SAPI context\n",
size);
return NULL;
}
TSS2_RC rval = Tss2_Sys_Initialize(sapi_ctx, size, tcti_ctx, &abi_version);
if (rval != TPM2_RC_SUCCESS) {
LOG_PERR(Tss2_Sys_Initialize, rval);
free(sapi_ctx);
return NULL;
}
return sapi_ctx;
}
int tpm2_rsa_sign_init(
unsigned long mechanish,
void *param,
size_t len,
void *ctx)
{
printf("executing tpm2_rsa_sign_init in tpm2_plugin... \n");
return 0;
}
int tpm2_tool_sign(TSS2_SYS_CONTEXT *sapi_context)
{
return 0;
}
int tpm2_rsa_sign(
void *ctx,
unsigned char *msg,
int msg_len,
unsigned char *sig,
int *sig_len)
{
int ret = 1;
TSS2_TCTI_CONTEXT *tcti;
tcti = tpm2_tcti_ldr_load(tcti_path, NULL);
if (!tcti) {
LOG_ERR("Could not load tcti, got: \"%s\"", tcti_path);
return -1;
}
TSS2_SYS_CONTEXT *sapi_context = NULL;
if (tcti) {
sapi_context = sapi_ctx_init(tcti);
if (!sapi_context) {
goto free_tcti;
}
}
ret = tpm2_tool_sign(sapi_context);
if (ret != 0) {
LOG_ERR("Unable to run tpm2_tool_sign");
sapi_teardown_full(sapi_context);
free_tcti:
tpm2_tcti_ldr_unload();
return ret;
}
}
int tpm2_rsa_create_object(
unsigned long appHandle,
//DhsmWPKRSAFormat* wpk,
void *wpk,
unsigned char* swk,
int swk_len,
unsigned char* iv,
int iv_len,
int tag_len,
void **cb_object)
{
return 0;
}
int tpm2_rsa_delete_object(void *cb_object)
{
return 0;
}
int tpm2_import_object(unsigned long appHandle,
unsigned char* tlvbuffer,
int buflen,
unsigned char* iv,
int iv_len,
unsigned char* tpm_pwd,
int tpm_pwd_len)
{
return 0;
}
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