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c0ce70b468
And assocated unit tests. BUG=chromium:423882 BRANCH=none TEST=VBOOT2=1 make runtests Change-Id: I37fccafd8ccee5c0d55e3746c1611a8dff73145a Signed-off-by: Randall Spangler <rspangler@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/226939 Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Convert structs from vboot1 data format to new vboot2 structs
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*/
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#include "2sysincludes.h"
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#include "2common.h"
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#include "2rsa.h"
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#include "vb2_convert_structs.h"
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#include "vboot_struct.h" /* For old struct sizes */
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#include "test_common.h"
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struct vb2_packed_key2 *vb2_convert_packed_key2(
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const struct vb2_packed_key *key,
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const char *desc, uint32_t *out_size)
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{
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struct vb2_packed_key2 k2 = {
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.c.magic = VB2_MAGIC_PACKED_KEY2,
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.c.struct_version_major = VB2_PACKED_KEY2_VERSION_MAJOR,
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.c.struct_version_minor = VB2_PACKED_KEY2_VERSION_MINOR,
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};
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uint8_t *kbuf;
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/* Calculate sizes and offsets */
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k2.c.fixed_size = sizeof(k2);
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k2.c.desc_size = roundup32(strlen(desc) + 1);
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k2.key_offset = k2.c.fixed_size + k2.c.desc_size;
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k2.key_size = key->key_size;
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k2.c.total_size = k2.key_offset + k2.key_size;
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/* Copy/initialize fields */
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k2.key_version = key->key_version;
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k2.sig_alg = vb2_crypto_to_signature(key->algorithm);
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k2.hash_alg = vb2_crypto_to_hash(key->algorithm);
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/* TODO: fill in a non-zero GUID */
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/* Allocate the new buffer */
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*out_size = k2.c.total_size;
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kbuf = malloc(*out_size);
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memset(kbuf, 0, *out_size);
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/* Copy data into the buffer */
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memcpy(kbuf, &k2, sizeof(k2));
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/* strcpy() is safe because we allocated above based on strlen() */
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strcpy((char *)(kbuf + k2.c.fixed_size), desc);
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kbuf[k2.c.fixed_size + k2.c.desc_size - 1] = 0;
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memcpy(kbuf + k2.key_offset,
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(const uint8_t *)key + key->key_offset,
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key->key_size);
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/* Return the newly allocated buffer */
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return (struct vb2_packed_key2 *)kbuf;
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}
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struct vb2_signature2 *vb2_convert_signature2(
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const struct vb2_signature *sig,
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const char *desc,
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const struct vb2_packed_key2 *key,
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uint32_t *out_size)
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{
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struct vb2_signature2 s2 = {
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.c.magic = VB2_MAGIC_SIGNATURE2,
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.c.struct_version_major = VB2_SIGNATURE2_VERSION_MAJOR,
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.c.struct_version_minor = VB2_SIGNATURE2_VERSION_MINOR,
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};
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uint8_t *buf;
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/* Calculate description size */
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s2.c.fixed_size = sizeof(s2);
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s2.c.desc_size = roundup32(strlen(desc) + 1);
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/* Copy/initialize fields */
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s2.sig_offset = s2.c.fixed_size + s2.c.desc_size;
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s2.sig_size = sig->sig_size;
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s2.c.total_size = s2.sig_offset + s2.sig_size;
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s2.data_size = sig->data_size;
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/* Copy fields from key if present */
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if (key) {
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s2.sig_alg = key->sig_alg;
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s2.hash_alg = key->hash_alg;
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memcpy(&s2.key_guid, &key->key_guid, GUID_SIZE);
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} else {
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s2.sig_alg = VB2_SIG_INVALID;
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s2.hash_alg = VB2_HASH_INVALID;
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memset(&s2.key_guid, 0, GUID_SIZE);
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}
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/* Allocate the new buffer */
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*out_size = s2.sig_offset + s2.sig_size;
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buf = malloc(*out_size);
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memset(buf, 0, *out_size);
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/* Copy data into the buffer */
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memcpy(buf, &s2, sizeof(s2));
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/* strcpy() is safe because we allocated above based on strlen() */
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strcpy((char *)(buf + s2.c.fixed_size), desc);
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buf[s2.c.fixed_size + s2.c.desc_size - 1] = 0;
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memcpy(buf + s2.sig_offset,
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(const uint8_t *)sig + sig->sig_offset,
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sig->sig_size);
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/* Return the newly allocated buffer */
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return (struct vb2_signature2 *)buf;
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}
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