acrn-hypervisor/devicemodel/core/vrpmb.c

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/*
* Copyright (c) 2018 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.
*
* THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``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 NETAPP, INC 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 <stdlib.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <unistd.h>
#include <openssl/rand.h>
#include "types.h"
#include "vrpmb.h"
#include "acrn_common.h"
struct key_material {
uint8_t key[RPMB_KEY_LEN];
bool initialized;
};
static struct key_material vrkey = { .initialized = false };
int get_vrpmb_key(uint8_t *out, size_t size)
{
if (!out) {
fprintf(stderr, "%s: Invalid output pointer\n", __func__);
return 0;
}
assert(size == RPMB_KEY_LEN);
if ( vrkey.initialized == false ) {
/* FIXME: Currently the transport path is not ready, so
* use fixed key(all 0) for temporary solution.
*/
memset(vrkey.key, 0, RPMB_KEY_LEN);
}
memcpy(out, vrkey.key, size);
return 1;
}