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/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Common functions between firmware and kernel verified boot.
* (Firmware portion)
*/
#include "2common.h"
#include "2misc.h"
#include "2rsa.h"
#include "2sha.h"
#include "2sysincludes.h"
#include "utility.h"
#include "vboot_api.h"
#include "vboot_common.h"
void PublicKeyInit(struct vb2_packed_key *key,
uint8_t *key_data, uint64_t key_size)
{
key->key_offset = vb2_offset_of(key, key_data);
key->key_size = key_size;
key->algorithm = VB2_ALG_COUNT; /* Key not present yet */
key->key_version = 0;
}
int PublicKeyCopy(struct vb2_packed_key *dest, const struct vb2_packed_key *src)
{
if (dest->key_size < src->key_size)
return 1;
dest->key_size = src->key_size;
dest->algorithm = src->algorithm;
dest->key_version = src->key_version;
memcpy(vb2_packed_key_data_mutable(dest),
vb2_packed_key_data(src),
src->key_size);
return 0;
}
vb2_error_t VerifyVmlinuzInsideKBlob(uint64_t kblob, uint64_t kblob_size,
uint64_t header, uint64_t header_size)
{
uint64_t end = header-kblob;
if (end > kblob_size)
return VBOOT_PREAMBLE_INVALID;
if (UINT64_MAX - end < header_size)
return VBOOT_PREAMBLE_INVALID;
if (end + header_size > kblob_size)
return VBOOT_PREAMBLE_INVALID;
return VB2_SUCCESS;
}
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