1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
/* Copyright (c) 2011 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.
*
* Verified boot key utility
*/
#include <getopt.h>
#include <inttypes.h> /* For PRIu64 */
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "futility.h"
#include "host_common.h"
#include "host_key21.h"
#include "util_misc.h"
#include "vb1_helper.h"
#include "vb2_common.h"
/* Command line options */
enum {
OPT_INKEY = 1000,
OPT_KEY_VERSION,
OPT_ALGORITHM,
OPT_MODE_PACK,
OPT_MODE_UNPACK,
OPT_COPYTO,
OPT_HELP,
};
static const struct option long_opts[] = {
{"key", 1, 0, OPT_INKEY},
{"version", 1, 0, OPT_KEY_VERSION},
{"algorithm", 1, 0, OPT_ALGORITHM},
{"pack", 1, 0, OPT_MODE_PACK},
{"unpack", 1, 0, OPT_MODE_UNPACK},
{"copyto", 1, 0, OPT_COPYTO},
{"help", 0, 0, OPT_HELP},
{NULL, 0, 0, 0}
};
static void print_help(int argc, char *argv[])
{
int i;
printf("\n"
"Usage: " MYNAME " %s --pack <outfile> [PARAMETERS]\n"
"\n"
" Required parameters:\n"
" --key <infile> RSA key file (.keyb or .pem)\n"
" --version <number> Key version number "
"(required for .keyb,\n"
" ignored for .pem)\n"
" --algorithm <number> "
"Signing algorithm to use with key:\n", argv[0]);
for (i = 0; i < VB2_ALG_COUNT; i++) {
printf(" %d = (%s)\n",
i, vb2_get_crypto_algorithm_name(i));
}
printf("\nOR\n\n"
"Usage: " MYNAME " %s --unpack <infile>\n"
"\n"
" Optional parameters:\n"
" --copyto <file> "
"Write a copy of the key to this file.\n\n", argv[0]);
}
/* Pack a .keyb file into a .vbpubk, or a .pem into a .vbprivk */
static int do_pack(const char *infile, const char *outfile, uint32_t algorithm,
uint32_t version)
{
if (!infile || !outfile) {
fprintf(stderr, "vbutil_key: Must specify --in and --out\n");
return 1;
}
struct vb2_packed_key *pubkey =
vb2_read_packed_keyb(infile, algorithm, version);
if (pubkey) {
if (0 != vb2_write_packed_key(outfile, pubkey)) {
fprintf(stderr, "vbutil_key: Error writing key.\n");
free(pubkey);
return 1;
}
free(pubkey);
return 0;
}
struct vb2_private_key *privkey =
vb2_read_private_key_pem(infile, algorithm);
if (privkey) {
if (VB2_SUCCESS != vb2_write_private_key(outfile, privkey)) {
fprintf(stderr, "vbutil_key: Error writing key.\n");
free(privkey);
return 1;
}
free(privkey);
return 0;
}
FATAL("Unable to parse either .keyb or .pem from %s\n", infile);
return 1;
}
/* Unpack a .vbpubk or .vbprivk */
static int do_unpack(const char *infile, const char *outfile)
{
struct vb2_packed_key *pubkey;
if (!infile) {
fprintf(stderr, "Need file to unpack\n");
return 1;
}
pubkey = vb2_read_packed_key(infile);
if (pubkey) {
printf("Public Key file: %s\n", infile);
printf("Algorithm: %u %s\n", pubkey->algorithm,
vb2_get_crypto_algorithm_name(pubkey->algorithm));
printf("Key Version: %u\n", pubkey->key_version);
printf("Key sha1sum: %s\n",
packed_key_sha1_string(pubkey));
if (outfile &&
VB2_SUCCESS != vb2_write_packed_key(outfile, pubkey)) {
fprintf(stderr, "butil_key: Error writing key copy\n");
free(pubkey);
return 1;
}
free(pubkey);
return 0;
}
struct vb2_private_key *privkey = vb2_read_private_key(infile);
if (privkey) {
printf("Private Key file: %s\n", infile);
enum vb2_crypto_algorithm alg =
vb2_get_crypto_algorithm(privkey->hash_alg,
privkey->sig_alg);
printf("Algorithm: %u %s\n", alg,
vb2_get_crypto_algorithm_name(alg));
if (outfile &&
VB2_SUCCESS != vb2_write_private_key(outfile, privkey)) {
fprintf(stderr,"vbutil_key: Error writing key copy\n");
free(privkey);
return 1;
}
free(privkey);
return 0;
}
FATAL("Unable to parse either .vbpubk or vbprivk from %s\n", infile);
return 1;
}
static int do_vbutil_key(int argc, char *argv[])
{
char *infile = NULL;
char *outfile = NULL;
int mode = 0;
int parse_error = 0;
uint32_t version = 1;
uint32_t algorithm = VB2_ALG_COUNT;
char *e;
int i;
while ((i = getopt_long(argc, argv, "", long_opts, NULL)) != -1) {
switch (i) {
case '?':
/* Unhandled option */
FATAL("Unknown option\n");
parse_error = 1;
break;
case OPT_HELP:
print_help(argc, argv);
return !!parse_error;
case OPT_INKEY:
infile = optarg;
break;
case OPT_KEY_VERSION:
version = strtoul(optarg, &e, 0);
if (!*optarg || (e && *e)) {
FATAL("Invalid --version\n");
parse_error = 1;
}
break;
case OPT_ALGORITHM:
algorithm = strtoul(optarg, &e, 0);
if (!*optarg || (e && *e)) {
FATAL("Invalid --algorithm\n");
parse_error = 1;
}
break;
case OPT_MODE_PACK:
mode = i;
outfile = optarg;
break;
case OPT_MODE_UNPACK:
mode = i;
infile = optarg;
break;
case OPT_COPYTO:
outfile = optarg;
break;
}
}
if (parse_error) {
print_help(argc, argv);
return 1;
}
switch (mode) {
case OPT_MODE_PACK:
return do_pack(infile, outfile, algorithm, version);
case OPT_MODE_UNPACK:
return do_unpack(infile, outfile);
default:
printf("Must specify a mode.\n");
print_help(argc, argv);
return 1;
}
}
DECLARE_FUTIL_COMMAND(vbutil_key, do_vbutil_key, VBOOT_VERSION_1_0,
"Wraps RSA keys with vboot headers");
|
