Tom Rini | 10e4779 | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (c) 2013, Google Inc. |
| 4 | * |
| 5 | * (C) Copyright 2008 Semihalf |
| 6 | * |
| 7 | * (C) Copyright 2000-2006 |
| 8 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 9 | */ |
| 10 | |
| 11 | #include "mkimage.h" |
Simon Glass | a51991d | 2014-06-12 07:24:53 -0600 | [diff] [blame] | 12 | #include <bootm.h> |
Masahiro Yamada | 6dd1052 | 2020-04-16 18:30:18 +0900 | [diff] [blame] | 13 | #include <fdt_region.h> |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 14 | #include <image.h> |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 15 | #include <version.h> |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 16 | |
Philippe Reynes | 3e3899c | 2022-03-28 22:57:02 +0200 | [diff] [blame] | 17 | #include <openssl/pem.h> |
| 18 | #include <openssl/evp.h> |
| 19 | |
| 20 | #define IMAGE_PRE_LOAD_PATH "/image/pre-load/sig" |
| 21 | |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 22 | /** |
Simon Glass | 0ce6e3d | 2013-05-07 06:11:56 +0000 | [diff] [blame] | 23 | * fit_set_hash_value - set hash value in requested has node |
| 24 | * @fit: pointer to the FIT format image header |
| 25 | * @noffset: hash node offset |
| 26 | * @value: hash value to be set |
| 27 | * @value_len: hash value length |
| 28 | * |
| 29 | * fit_set_hash_value() attempts to set hash value in a node at offset |
| 30 | * given and returns operation status to the caller. |
| 31 | * |
| 32 | * returns |
| 33 | * 0, on success |
| 34 | * -1, on failure |
| 35 | */ |
| 36 | static int fit_set_hash_value(void *fit, int noffset, uint8_t *value, |
| 37 | int value_len) |
| 38 | { |
| 39 | int ret; |
| 40 | |
| 41 | ret = fdt_setprop(fit, noffset, FIT_VALUE_PROP, value, value_len); |
| 42 | if (ret) { |
| 43 | printf("Can't set hash '%s' property for '%s' node(%s)\n", |
| 44 | FIT_VALUE_PROP, fit_get_name(fit, noffset, NULL), |
| 45 | fdt_strerror(ret)); |
Simon Glass | ec539f7 | 2016-07-03 09:40:44 -0600 | [diff] [blame] | 46 | return ret == -FDT_ERR_NOSPACE ? -ENOSPC : -EIO; |
Simon Glass | 0ce6e3d | 2013-05-07 06:11:56 +0000 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | return 0; |
| 50 | } |
| 51 | |
| 52 | /** |
Simon Glass | 25d6e6b | 2013-05-07 06:11:55 +0000 | [diff] [blame] | 53 | * fit_image_process_hash - Process a single subnode of the images/ node |
| 54 | * |
| 55 | * Check each subnode and process accordingly. For hash nodes we generate |
Simon Glass | 6a0efc8 | 2021-11-12 12:28:06 -0700 | [diff] [blame] | 56 | * a hash of the supplied data and store it in the node. |
Simon Glass | 25d6e6b | 2013-05-07 06:11:55 +0000 | [diff] [blame] | 57 | * |
| 58 | * @fit: pointer to the FIT format image header |
Simon Glass | 6a0efc8 | 2021-11-12 12:28:06 -0700 | [diff] [blame] | 59 | * @image_name: name of image being processed (used to display errors) |
Simon Glass | 25d6e6b | 2013-05-07 06:11:55 +0000 | [diff] [blame] | 60 | * @noffset: subnode offset |
| 61 | * @data: data to process |
| 62 | * @size: size of data in bytes |
Heinrich Schuchardt | 47b4c02 | 2022-01-19 18:05:50 +0100 | [diff] [blame] | 63 | * Return: 0 if ok, -1 on error |
Simon Glass | 25d6e6b | 2013-05-07 06:11:55 +0000 | [diff] [blame] | 64 | */ |
| 65 | static int fit_image_process_hash(void *fit, const char *image_name, |
| 66 | int noffset, const void *data, size_t size) |
| 67 | { |
| 68 | uint8_t value[FIT_MAX_HASH_LEN]; |
Simon Glass | ee38265 | 2013-05-07 06:12:01 +0000 | [diff] [blame] | 69 | const char *node_name; |
Simon Glass | 25d6e6b | 2013-05-07 06:11:55 +0000 | [diff] [blame] | 70 | int value_len; |
Jan Kiszka | 27beec2 | 2022-01-14 10:21:17 +0100 | [diff] [blame] | 71 | const char *algo; |
Simon Glass | ec539f7 | 2016-07-03 09:40:44 -0600 | [diff] [blame] | 72 | int ret; |
Simon Glass | 25d6e6b | 2013-05-07 06:11:55 +0000 | [diff] [blame] | 73 | |
Simon Glass | ee38265 | 2013-05-07 06:12:01 +0000 | [diff] [blame] | 74 | node_name = fit_get_name(fit, noffset, NULL); |
Simon Glass | 25d6e6b | 2013-05-07 06:11:55 +0000 | [diff] [blame] | 75 | |
| 76 | if (fit_image_hash_get_algo(fit, noffset, &algo)) { |
| 77 | printf("Can't get hash algo property for '%s' hash node in '%s' image node\n", |
Simon Glass | ee38265 | 2013-05-07 06:12:01 +0000 | [diff] [blame] | 78 | node_name, image_name); |
Simon Glass | ec539f7 | 2016-07-03 09:40:44 -0600 | [diff] [blame] | 79 | return -ENOENT; |
Simon Glass | 25d6e6b | 2013-05-07 06:11:55 +0000 | [diff] [blame] | 80 | } |
| 81 | |
| 82 | if (calculate_hash(data, size, algo, value, &value_len)) { |
| 83 | printf("Unsupported hash algorithm (%s) for '%s' hash node in '%s' image node\n", |
Simon Glass | ee38265 | 2013-05-07 06:12:01 +0000 | [diff] [blame] | 84 | algo, node_name, image_name); |
Simon Glass | ec539f7 | 2016-07-03 09:40:44 -0600 | [diff] [blame] | 85 | return -EPROTONOSUPPORT; |
Simon Glass | 25d6e6b | 2013-05-07 06:11:55 +0000 | [diff] [blame] | 86 | } |
| 87 | |
Simon Glass | ec539f7 | 2016-07-03 09:40:44 -0600 | [diff] [blame] | 88 | ret = fit_set_hash_value(fit, noffset, value, value_len); |
| 89 | if (ret) { |
Simon Glass | 25d6e6b | 2013-05-07 06:11:55 +0000 | [diff] [blame] | 90 | printf("Can't set hash value for '%s' hash node in '%s' image node\n", |
Simon Glass | ee38265 | 2013-05-07 06:12:01 +0000 | [diff] [blame] | 91 | node_name, image_name); |
Simon Glass | ec539f7 | 2016-07-03 09:40:44 -0600 | [diff] [blame] | 92 | return ret; |
Simon Glass | 25d6e6b | 2013-05-07 06:11:55 +0000 | [diff] [blame] | 93 | } |
| 94 | |
| 95 | return 0; |
| 96 | } |
| 97 | |
| 98 | /** |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 99 | * fit_image_write_sig() - write the signature to a FIT |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 100 | * |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 101 | * This writes the signature and signer data to the FIT. |
| 102 | * |
| 103 | * @fit: pointer to the FIT format image header |
| 104 | * @noffset: hash node offset |
| 105 | * @value: signature value to be set |
| 106 | * @value_len: signature value length |
| 107 | * @comment: Text comment to write (NULL for none) |
| 108 | * |
| 109 | * returns |
| 110 | * 0, on success |
| 111 | * -FDT_ERR_..., on failure |
| 112 | */ |
| 113 | static int fit_image_write_sig(void *fit, int noffset, uint8_t *value, |
| 114 | int value_len, const char *comment, const char *region_prop, |
Jan Kiszka | 4043f32 | 2022-01-14 10:21:19 +0100 | [diff] [blame] | 115 | int region_proplen, const char *cmdname, const char *algo_name) |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 116 | { |
| 117 | int string_size; |
| 118 | int ret; |
| 119 | |
| 120 | /* |
| 121 | * Get the current string size, before we update the FIT and add |
| 122 | * more |
| 123 | */ |
| 124 | string_size = fdt_size_dt_strings(fit); |
| 125 | |
| 126 | ret = fdt_setprop(fit, noffset, FIT_VALUE_PROP, value, value_len); |
| 127 | if (!ret) { |
| 128 | ret = fdt_setprop_string(fit, noffset, "signer-name", |
| 129 | "mkimage"); |
| 130 | } |
| 131 | if (!ret) { |
| 132 | ret = fdt_setprop_string(fit, noffset, "signer-version", |
| 133 | PLAIN_VERSION); |
| 134 | } |
| 135 | if (comment && !ret) |
| 136 | ret = fdt_setprop_string(fit, noffset, "comment", comment); |
Alex Kiernan | 697fcdc | 2018-06-20 20:10:52 +0000 | [diff] [blame] | 137 | if (!ret) { |
| 138 | time_t timestamp = imagetool_get_source_date(cmdname, |
| 139 | time(NULL)); |
Ming Liu | f75f1d7 | 2021-05-31 09:04:51 +0200 | [diff] [blame] | 140 | uint32_t t = cpu_to_uimage(timestamp); |
Alex Kiernan | 697fcdc | 2018-06-20 20:10:52 +0000 | [diff] [blame] | 141 | |
Ming Liu | f75f1d7 | 2021-05-31 09:04:51 +0200 | [diff] [blame] | 142 | ret = fdt_setprop(fit, noffset, FIT_TIMESTAMP_PROP, &t, |
| 143 | sizeof(uint32_t)); |
Alex Kiernan | 697fcdc | 2018-06-20 20:10:52 +0000 | [diff] [blame] | 144 | } |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 145 | if (region_prop && !ret) { |
| 146 | uint32_t strdata[2]; |
| 147 | |
| 148 | ret = fdt_setprop(fit, noffset, "hashed-nodes", |
| 149 | region_prop, region_proplen); |
Teddy Reed | 9767bf4 | 2018-06-09 11:45:20 -0400 | [diff] [blame] | 150 | /* This is a legacy offset, it is unused, and must remain 0. */ |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 151 | strdata[0] = 0; |
| 152 | strdata[1] = cpu_to_fdt32(string_size); |
| 153 | if (!ret) { |
| 154 | ret = fdt_setprop(fit, noffset, "hashed-strings", |
| 155 | strdata, sizeof(strdata)); |
| 156 | } |
| 157 | } |
Jan Kiszka | 4043f32 | 2022-01-14 10:21:19 +0100 | [diff] [blame] | 158 | if (algo_name && !ret) |
| 159 | ret = fdt_setprop_string(fit, noffset, "algo", algo_name); |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 160 | |
| 161 | return ret; |
| 162 | } |
| 163 | |
| 164 | static int fit_image_setup_sig(struct image_sign_info *info, |
Alexandru Gagniuc | 8fcea12 | 2021-02-19 12:45:17 -0600 | [diff] [blame] | 165 | const char *keydir, const char *keyfile, void *fit, |
| 166 | const char *image_name, int noffset, const char *require_keys, |
Jan Kiszka | 4043f32 | 2022-01-14 10:21:19 +0100 | [diff] [blame] | 167 | const char *engine_id, const char *algo_name) |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 168 | { |
| 169 | const char *node_name; |
Philippe Reynes | 1246835 | 2018-11-14 13:51:00 +0100 | [diff] [blame] | 170 | const char *padding_name; |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 171 | |
| 172 | node_name = fit_get_name(fit, noffset, NULL); |
Jan Kiszka | 4043f32 | 2022-01-14 10:21:19 +0100 | [diff] [blame] | 173 | if (!algo_name) { |
| 174 | if (fit_image_hash_get_algo(fit, noffset, &algo_name)) { |
| 175 | printf("Can't get algo property for '%s' signature node in '%s' image node\n", |
| 176 | node_name, image_name); |
| 177 | return -1; |
| 178 | } |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 179 | } |
| 180 | |
Philippe Reynes | 1246835 | 2018-11-14 13:51:00 +0100 | [diff] [blame] | 181 | padding_name = fdt_getprop(fit, noffset, "padding", NULL); |
| 182 | |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 183 | memset(info, '\0', sizeof(*info)); |
| 184 | info->keydir = keydir; |
Alexandru Gagniuc | 8fcea12 | 2021-02-19 12:45:17 -0600 | [diff] [blame] | 185 | info->keyfile = keyfile; |
Simon Glass | d7aabcc | 2020-03-18 11:44:06 -0600 | [diff] [blame] | 186 | info->keyname = fdt_getprop(fit, noffset, FIT_KEY_HINT, NULL); |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 187 | info->fit = fit; |
| 188 | info->node_offset = noffset; |
Masahiro Yamada | c1f137b | 2017-10-27 13:25:21 +0900 | [diff] [blame] | 189 | info->name = strdup(algo_name); |
Andrew Duda | 6616c82 | 2016-11-08 18:53:41 +0000 | [diff] [blame] | 190 | info->checksum = image_get_checksum_algo(algo_name); |
| 191 | info->crypto = image_get_crypto_algo(algo_name); |
Philippe Reynes | 1246835 | 2018-11-14 13:51:00 +0100 | [diff] [blame] | 192 | info->padding = image_get_padding_algo(padding_name); |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 193 | info->require_keys = require_keys; |
George McCollister | 23d1489 | 2017-01-06 13:14:17 -0600 | [diff] [blame] | 194 | info->engine_id = engine_id; |
Andrew Duda | 6616c82 | 2016-11-08 18:53:41 +0000 | [diff] [blame] | 195 | if (!info->checksum || !info->crypto) { |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 196 | printf("Unsupported signature algorithm (%s) for '%s' signature node in '%s' image node\n", |
| 197 | algo_name, node_name, image_name); |
| 198 | return -1; |
| 199 | } |
| 200 | |
| 201 | return 0; |
| 202 | } |
| 203 | |
| 204 | /** |
| 205 | * fit_image_process_sig- Process a single subnode of the images/ node |
| 206 | * |
| 207 | * Check each subnode and process accordingly. For signature nodes we |
Simon Glass | 6a0efc8 | 2021-11-12 12:28:06 -0700 | [diff] [blame] | 208 | * generate a signed hash of the supplied data and store it in the node. |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 209 | * |
| 210 | * @keydir: Directory containing keys to use for signing |
Simon Glass | 6a0efc8 | 2021-11-12 12:28:06 -0700 | [diff] [blame] | 211 | * @keydest: Destination FDT blob to write public keys into (NULL if none) |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 212 | * @fit: pointer to the FIT format image header |
Simon Glass | 6a0efc8 | 2021-11-12 12:28:06 -0700 | [diff] [blame] | 213 | * @image_name: name of image being processed (used to display errors) |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 214 | * @noffset: subnode offset |
| 215 | * @data: data to process |
| 216 | * @size: size of data in bytes |
| 217 | * @comment: Comment to add to signature nodes |
| 218 | * @require_keys: Mark all keys as 'required' |
George McCollister | 23d1489 | 2017-01-06 13:14:17 -0600 | [diff] [blame] | 219 | * @engine_id: Engine to use for signing |
Simon Glass | 89c3fb6 | 2021-11-12 12:28:12 -0700 | [diff] [blame] | 220 | * Return: keydest node if @keydest is non-NULL, else 0 if none; -ve error code |
| 221 | * on failure |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 222 | */ |
Alexandru Gagniuc | 8fcea12 | 2021-02-19 12:45:17 -0600 | [diff] [blame] | 223 | static int fit_image_process_sig(const char *keydir, const char *keyfile, |
| 224 | void *keydest, void *fit, const char *image_name, |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 225 | int noffset, const void *data, size_t size, |
Alex Kiernan | 697fcdc | 2018-06-20 20:10:52 +0000 | [diff] [blame] | 226 | const char *comment, int require_keys, const char *engine_id, |
Jan Kiszka | 4043f32 | 2022-01-14 10:21:19 +0100 | [diff] [blame] | 227 | const char *cmdname, const char *algo_name) |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 228 | { |
| 229 | struct image_sign_info info; |
| 230 | struct image_region region; |
| 231 | const char *node_name; |
| 232 | uint8_t *value; |
| 233 | uint value_len; |
| 234 | int ret; |
| 235 | |
Alexandru Gagniuc | 8fcea12 | 2021-02-19 12:45:17 -0600 | [diff] [blame] | 236 | if (fit_image_setup_sig(&info, keydir, keyfile, fit, image_name, |
| 237 | noffset, require_keys ? "image" : NULL, |
Jan Kiszka | 4043f32 | 2022-01-14 10:21:19 +0100 | [diff] [blame] | 238 | engine_id, algo_name)) |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 239 | return -1; |
| 240 | |
| 241 | node_name = fit_get_name(fit, noffset, NULL); |
| 242 | region.data = data; |
| 243 | region.size = size; |
Andrew Duda | 6616c82 | 2016-11-08 18:53:41 +0000 | [diff] [blame] | 244 | ret = info.crypto->sign(&info, ®ion, 1, &value, &value_len); |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 245 | if (ret) { |
| 246 | printf("Failed to sign '%s' signature node in '%s' image node: %d\n", |
| 247 | node_name, image_name, ret); |
| 248 | |
| 249 | /* We allow keys to be missing */ |
| 250 | if (ret == -ENOENT) |
| 251 | return 0; |
| 252 | return -1; |
| 253 | } |
| 254 | |
| 255 | ret = fit_image_write_sig(fit, noffset, value, value_len, comment, |
Jan Kiszka | 4043f32 | 2022-01-14 10:21:19 +0100 | [diff] [blame] | 256 | NULL, 0, cmdname, algo_name); |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 257 | if (ret) { |
Simon Glass | 802aa82 | 2014-06-02 22:04:53 -0600 | [diff] [blame] | 258 | if (ret == -FDT_ERR_NOSPACE) |
| 259 | return -ENOSPC; |
| 260 | printf("Can't write signature for '%s' signature node in '%s' conf node: %s\n", |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 261 | node_name, image_name, fdt_strerror(ret)); |
| 262 | return -1; |
| 263 | } |
| 264 | free(value); |
| 265 | |
| 266 | /* Get keyname again, as FDT has changed and invalidated our pointer */ |
Simon Glass | d7aabcc | 2020-03-18 11:44:06 -0600 | [diff] [blame] | 267 | info.keyname = fdt_getprop(fit, noffset, FIT_KEY_HINT, NULL); |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 268 | |
mario.six@gdsys.cc | dc4053a | 2016-07-22 08:58:40 +0200 | [diff] [blame] | 269 | /* |
| 270 | * Write the public key into the supplied FDT file; this might fail |
mario.six@gdsys.cc | d019e15 | 2016-07-19 11:07:06 +0200 | [diff] [blame] | 271 | * several times, since we try signing with successively increasing |
mario.six@gdsys.cc | dc4053a | 2016-07-22 08:58:40 +0200 | [diff] [blame] | 272 | * size values |
| 273 | */ |
Masahiro Yamada | 0148676 | 2017-10-27 15:04:20 +0900 | [diff] [blame] | 274 | if (keydest) { |
| 275 | ret = info.crypto->add_verify_data(&info, keydest); |
Simon Glass | 94336dc | 2021-11-12 12:28:11 -0700 | [diff] [blame] | 276 | if (ret < 0) { |
Masahiro Yamada | 0148676 | 2017-10-27 15:04:20 +0900 | [diff] [blame] | 277 | printf("Failed to add verification data for '%s' signature node in '%s' image node\n", |
| 278 | node_name, image_name); |
| 279 | return ret; |
| 280 | } |
Simon Glass | 89c3fb6 | 2021-11-12 12:28:12 -0700 | [diff] [blame] | 281 | /* Return the node that was written to */ |
| 282 | return ret; |
Masahiro Yamada | 0148676 | 2017-10-27 15:04:20 +0900 | [diff] [blame] | 283 | } |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 284 | |
| 285 | return 0; |
| 286 | } |
| 287 | |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 288 | static int fit_image_read_data(char *filename, unsigned char *data, |
| 289 | int expected_size) |
| 290 | { |
| 291 | struct stat sbuf; |
| 292 | int fd, ret = -1; |
| 293 | ssize_t n; |
| 294 | |
| 295 | /* Open file */ |
| 296 | fd = open(filename, O_RDONLY | O_BINARY); |
| 297 | if (fd < 0) { |
| 298 | printf("Can't open file %s (err=%d => %s)\n", |
| 299 | filename, errno, strerror(errno)); |
| 300 | return -1; |
| 301 | } |
| 302 | |
| 303 | /* Compute file size */ |
| 304 | if (fstat(fd, &sbuf) < 0) { |
| 305 | printf("Can't fstat file %s (err=%d => %s)\n", |
| 306 | filename, errno, strerror(errno)); |
| 307 | goto err; |
| 308 | } |
| 309 | |
| 310 | /* Check file size */ |
| 311 | if (sbuf.st_size != expected_size) { |
Heinrich Schuchardt | d697a2d | 2020-10-08 20:51:24 +0200 | [diff] [blame] | 312 | printf("File %s don't have the expected size (size=%lld, expected=%d)\n", |
| 313 | filename, (long long)sbuf.st_size, expected_size); |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 314 | goto err; |
| 315 | } |
| 316 | |
| 317 | /* Read data */ |
| 318 | n = read(fd, data, sbuf.st_size); |
| 319 | if (n < 0) { |
| 320 | printf("Can't read file %s (err=%d => %s)\n", |
| 321 | filename, errno, strerror(errno)); |
| 322 | goto err; |
| 323 | } |
| 324 | |
| 325 | /* Check that we have read all the file */ |
| 326 | if (n != sbuf.st_size) { |
Vagrant Cascadian | 396e4ed | 2021-09-28 10:11:46 -0700 | [diff] [blame] | 327 | printf("Can't read all file %s (read %zd bytes, expected %lld)\n", |
Heinrich Schuchardt | d697a2d | 2020-10-08 20:51:24 +0200 | [diff] [blame] | 328 | filename, n, (long long)sbuf.st_size); |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 329 | goto err; |
| 330 | } |
| 331 | |
| 332 | ret = 0; |
| 333 | |
| 334 | err: |
| 335 | close(fd); |
| 336 | return ret; |
| 337 | } |
| 338 | |
Philippe Reynes | 64d67c4 | 2020-09-17 15:01:46 +0200 | [diff] [blame] | 339 | static int get_random_data(void *data, int size) |
| 340 | { |
| 341 | unsigned char *tmp = data; |
| 342 | struct timespec date; |
Simon Glass | 7a1745c | 2021-05-13 19:39:20 -0600 | [diff] [blame] | 343 | int i, ret; |
Philippe Reynes | 64d67c4 | 2020-09-17 15:01:46 +0200 | [diff] [blame] | 344 | |
| 345 | if (!tmp) { |
| 346 | printf("%s: pointer data is NULL\n", __func__); |
| 347 | ret = -1; |
| 348 | goto out; |
| 349 | } |
| 350 | |
| 351 | ret = clock_gettime(CLOCK_MONOTONIC, &date); |
Simon Glass | 7a1745c | 2021-05-13 19:39:20 -0600 | [diff] [blame] | 352 | if (ret) { |
| 353 | printf("%s: clock_gettime has failed (%s)\n", __func__, |
| 354 | strerror(errno)); |
Philippe Reynes | 64d67c4 | 2020-09-17 15:01:46 +0200 | [diff] [blame] | 355 | goto out; |
| 356 | } |
| 357 | |
Philippe Reynes | 95f2ab2 | 2020-11-13 16:37:46 +0100 | [diff] [blame] | 358 | srandom(date.tv_nsec); |
Philippe Reynes | 64d67c4 | 2020-09-17 15:01:46 +0200 | [diff] [blame] | 359 | |
| 360 | for (i = 0; i < size; i++) { |
Philippe Reynes | 95f2ab2 | 2020-11-13 16:37:46 +0100 | [diff] [blame] | 361 | *tmp = random() & 0xff; |
Philippe Reynes | 64d67c4 | 2020-09-17 15:01:46 +0200 | [diff] [blame] | 362 | tmp++; |
| 363 | } |
| 364 | |
| 365 | out: |
| 366 | return ret; |
| 367 | } |
| 368 | |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 369 | static int fit_image_setup_cipher(struct image_cipher_info *info, |
| 370 | const char *keydir, void *fit, |
| 371 | const char *image_name, int image_noffset, |
Patrick Oppenlander | d586fc3 | 2020-07-30 14:22:13 +1000 | [diff] [blame] | 372 | int noffset) |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 373 | { |
| 374 | char *algo_name; |
| 375 | char filename[128]; |
| 376 | int ret = -1; |
| 377 | |
| 378 | if (fit_image_cipher_get_algo(fit, noffset, &algo_name)) { |
Patrick Oppenlander | d586fc3 | 2020-07-30 14:22:13 +1000 | [diff] [blame] | 379 | printf("Can't get algo name for cipher in image '%s'\n", |
| 380 | image_name); |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 381 | goto out; |
| 382 | } |
| 383 | |
| 384 | info->keydir = keydir; |
| 385 | |
| 386 | /* Read the key name */ |
Simon Glass | d7aabcc | 2020-03-18 11:44:06 -0600 | [diff] [blame] | 387 | info->keyname = fdt_getprop(fit, noffset, FIT_KEY_HINT, NULL); |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 388 | if (!info->keyname) { |
Patrick Oppenlander | d586fc3 | 2020-07-30 14:22:13 +1000 | [diff] [blame] | 389 | printf("Can't get key name for cipher in image '%s'\n", |
| 390 | image_name); |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 391 | goto out; |
| 392 | } |
| 393 | |
Philippe Reynes | 64d67c4 | 2020-09-17 15:01:46 +0200 | [diff] [blame] | 394 | /* |
| 395 | * Read the IV name |
| 396 | * |
| 397 | * If this property is not provided then mkimage will generate |
| 398 | * a random IV and store it in the FIT image |
| 399 | */ |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 400 | info->ivname = fdt_getprop(fit, noffset, "iv-name-hint", NULL); |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 401 | |
| 402 | info->fit = fit; |
| 403 | info->node_noffset = noffset; |
| 404 | info->name = algo_name; |
| 405 | |
| 406 | info->cipher = image_get_cipher_algo(algo_name); |
| 407 | if (!info->cipher) { |
| 408 | printf("Can't get algo for cipher '%s'\n", image_name); |
| 409 | goto out; |
| 410 | } |
| 411 | |
| 412 | /* Read the key in the file */ |
| 413 | snprintf(filename, sizeof(filename), "%s/%s%s", |
| 414 | info->keydir, info->keyname, ".bin"); |
| 415 | info->key = malloc(info->cipher->key_len); |
| 416 | if (!info->key) { |
| 417 | printf("Can't allocate memory for key\n"); |
| 418 | ret = -1; |
| 419 | goto out; |
| 420 | } |
| 421 | ret = fit_image_read_data(filename, (unsigned char *)info->key, |
| 422 | info->cipher->key_len); |
| 423 | if (ret < 0) |
| 424 | goto out; |
| 425 | |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 426 | info->iv = malloc(info->cipher->iv_len); |
| 427 | if (!info->iv) { |
| 428 | printf("Can't allocate memory for iv\n"); |
| 429 | ret = -1; |
| 430 | goto out; |
| 431 | } |
Philippe Reynes | 64d67c4 | 2020-09-17 15:01:46 +0200 | [diff] [blame] | 432 | |
| 433 | if (info->ivname) { |
| 434 | /* Read the IV in the file */ |
| 435 | snprintf(filename, sizeof(filename), "%s/%s%s", |
| 436 | info->keydir, info->ivname, ".bin"); |
| 437 | ret = fit_image_read_data(filename, (unsigned char *)info->iv, |
| 438 | info->cipher->iv_len); |
| 439 | } else { |
| 440 | /* Generate an ramdom IV */ |
| 441 | ret = get_random_data((void *)info->iv, info->cipher->iv_len); |
| 442 | } |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 443 | |
| 444 | out: |
| 445 | return ret; |
| 446 | } |
| 447 | |
| 448 | int fit_image_write_cipher(void *fit, int image_noffset, int noffset, |
| 449 | const void *data, size_t size, |
| 450 | unsigned char *data_ciphered, int data_ciphered_len) |
| 451 | { |
| 452 | int ret = -1; |
| 453 | |
Patrick Oppenlander | be47211 | 2020-07-30 14:22:14 +1000 | [diff] [blame] | 454 | /* Replace data with ciphered data */ |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 455 | ret = fdt_setprop(fit, image_noffset, FIT_DATA_PROP, |
| 456 | data_ciphered, data_ciphered_len); |
Patrick Oppenlander | be47211 | 2020-07-30 14:22:14 +1000 | [diff] [blame] | 457 | if (ret == -FDT_ERR_NOSPACE) { |
| 458 | ret = -ENOSPC; |
| 459 | goto out; |
| 460 | } |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 461 | if (ret) { |
Patrick Oppenlander | be47211 | 2020-07-30 14:22:14 +1000 | [diff] [blame] | 462 | printf("Can't replace data with ciphered data (err = %d)\n", ret); |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 463 | goto out; |
| 464 | } |
| 465 | |
| 466 | /* add non ciphered data size */ |
| 467 | ret = fdt_setprop_u32(fit, image_noffset, "data-size-unciphered", size); |
Patrick Oppenlander | be47211 | 2020-07-30 14:22:14 +1000 | [diff] [blame] | 468 | if (ret == -FDT_ERR_NOSPACE) { |
| 469 | ret = -ENOSPC; |
| 470 | goto out; |
| 471 | } |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 472 | if (ret) { |
| 473 | printf("Can't add unciphered data size (err = %d)\n", ret); |
| 474 | goto out; |
| 475 | } |
| 476 | |
| 477 | out: |
| 478 | return ret; |
| 479 | } |
| 480 | |
| 481 | static int |
| 482 | fit_image_process_cipher(const char *keydir, void *keydest, void *fit, |
| 483 | const char *image_name, int image_noffset, |
Patrick Oppenlander | d586fc3 | 2020-07-30 14:22:13 +1000 | [diff] [blame] | 484 | int node_noffset, const void *data, size_t size, |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 485 | const char *cmdname) |
| 486 | { |
| 487 | struct image_cipher_info info; |
| 488 | unsigned char *data_ciphered = NULL; |
| 489 | int data_ciphered_len; |
| 490 | int ret; |
| 491 | |
| 492 | memset(&info, 0, sizeof(info)); |
| 493 | |
| 494 | ret = fit_image_setup_cipher(&info, keydir, fit, image_name, |
Patrick Oppenlander | d586fc3 | 2020-07-30 14:22:13 +1000 | [diff] [blame] | 495 | image_noffset, node_noffset); |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 496 | if (ret) |
| 497 | goto out; |
| 498 | |
| 499 | ret = info.cipher->encrypt(&info, data, size, |
| 500 | &data_ciphered, &data_ciphered_len); |
| 501 | if (ret) |
| 502 | goto out; |
| 503 | |
| 504 | /* |
| 505 | * Write the public key into the supplied FDT file; this might fail |
| 506 | * several times, since we try signing with successively increasing |
| 507 | * size values |
Philippe Reynes | 64d67c4 | 2020-09-17 15:01:46 +0200 | [diff] [blame] | 508 | * And, if needed, write the iv in the FIT file |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 509 | */ |
| 510 | if (keydest) { |
Philippe Reynes | 64d67c4 | 2020-09-17 15:01:46 +0200 | [diff] [blame] | 511 | ret = info.cipher->add_cipher_data(&info, keydest, fit, node_noffset); |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 512 | if (ret) { |
| 513 | printf("Failed to add verification data for cipher '%s' in image '%s'\n", |
| 514 | info.keyname, image_name); |
| 515 | goto out; |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | ret = fit_image_write_cipher(fit, image_noffset, node_noffset, |
| 520 | data, size, |
| 521 | data_ciphered, data_ciphered_len); |
| 522 | |
| 523 | out: |
| 524 | free(data_ciphered); |
| 525 | free((void *)info.key); |
| 526 | free((void *)info.iv); |
| 527 | return ret; |
| 528 | } |
| 529 | |
| 530 | int fit_image_cipher_data(const char *keydir, void *keydest, |
| 531 | void *fit, int image_noffset, const char *comment, |
| 532 | int require_keys, const char *engine_id, |
| 533 | const char *cmdname) |
| 534 | { |
| 535 | const char *image_name; |
| 536 | const void *data; |
| 537 | size_t size; |
Patrick Oppenlander | a4fafb3 | 2020-07-30 14:22:15 +1000 | [diff] [blame] | 538 | int cipher_node_offset, len; |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 539 | |
| 540 | /* Get image name */ |
| 541 | image_name = fit_get_name(fit, image_noffset, NULL); |
| 542 | if (!image_name) { |
| 543 | printf("Can't get image name\n"); |
| 544 | return -1; |
| 545 | } |
| 546 | |
| 547 | /* Get image data and data length */ |
| 548 | if (fit_image_get_data(fit, image_noffset, &data, &size)) { |
| 549 | printf("Can't get image data/size\n"); |
| 550 | return -1; |
| 551 | } |
| 552 | |
Patrick Oppenlander | a4fafb3 | 2020-07-30 14:22:15 +1000 | [diff] [blame] | 553 | /* |
| 554 | * Don't cipher ciphered data. |
| 555 | * |
| 556 | * If the data-size-unciphered property is present the data for this |
| 557 | * image is already encrypted. This is important as 'mkimage -F' can be |
| 558 | * run multiple times on a FIT image. |
| 559 | */ |
| 560 | if (fdt_getprop(fit, image_noffset, "data-size-unciphered", &len)) |
| 561 | return 0; |
| 562 | if (len != -FDT_ERR_NOTFOUND) { |
| 563 | printf("Failure testing for data-size-unciphered\n"); |
| 564 | return -1; |
| 565 | } |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 566 | |
Patrick Oppenlander | d586fc3 | 2020-07-30 14:22:13 +1000 | [diff] [blame] | 567 | /* Process cipher node if present */ |
| 568 | cipher_node_offset = fdt_subnode_offset(fit, image_noffset, |
| 569 | FIT_CIPHER_NODENAME); |
| 570 | if (cipher_node_offset == -FDT_ERR_NOTFOUND) |
| 571 | return 0; |
| 572 | if (cipher_node_offset < 0) { |
| 573 | printf("Failure getting cipher node\n"); |
| 574 | return -1; |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 575 | } |
Patrick Oppenlander | d586fc3 | 2020-07-30 14:22:13 +1000 | [diff] [blame] | 576 | if (!IMAGE_ENABLE_ENCRYPT || !keydir) |
| 577 | return 0; |
| 578 | return fit_image_process_cipher(keydir, keydest, fit, image_name, |
| 579 | image_noffset, cipher_node_offset, data, size, cmdname); |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 580 | } |
| 581 | |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 582 | /** |
| 583 | * fit_image_add_verification_data() - calculate/set verig. data for image node |
| 584 | * |
| 585 | * This adds hash and signature values for an component image node. |
Simon Glass | ee38265 | 2013-05-07 06:12:01 +0000 | [diff] [blame] | 586 | * |
| 587 | * All existing hash subnodes are checked, if algorithm property is set to |
| 588 | * one of the supported hash algorithms, hash value is computed and |
| 589 | * corresponding hash node property is set, for example: |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 590 | * |
| 591 | * Input component image node structure: |
| 592 | * |
Andre Przywara | 3234ecd | 2017-12-04 02:05:10 +0000 | [diff] [blame] | 593 | * o image-1 (at image_noffset) |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 594 | * | - data = [binary data] |
Andre Przywara | 3234ecd | 2017-12-04 02:05:10 +0000 | [diff] [blame] | 595 | * o hash-1 |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 596 | * |- algo = "sha1" |
| 597 | * |
| 598 | * Output component image node structure: |
| 599 | * |
Andre Przywara | 3234ecd | 2017-12-04 02:05:10 +0000 | [diff] [blame] | 600 | * o image-1 (at image_noffset) |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 601 | * | - data = [binary data] |
Andre Przywara | 3234ecd | 2017-12-04 02:05:10 +0000 | [diff] [blame] | 602 | * o hash-1 |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 603 | * |- algo = "sha1" |
| 604 | * |- value = sha1(data) |
| 605 | * |
Simon Glass | ee38265 | 2013-05-07 06:12:01 +0000 | [diff] [blame] | 606 | * For signature details, please see doc/uImage.FIT/signature.txt |
| 607 | * |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 608 | * @keydir Directory containing *.key and *.crt files (or NULL) |
| 609 | * @keydest FDT Blob to write public keys into (NULL if none) |
Simon Glass | ee38265 | 2013-05-07 06:12:01 +0000 | [diff] [blame] | 610 | * @fit: Pointer to the FIT format image header |
| 611 | * @image_noffset: Requested component image node |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 612 | * @comment: Comment to add to signature nodes |
| 613 | * @require_keys: Mark all keys as 'required' |
George McCollister | 23d1489 | 2017-01-06 13:14:17 -0600 | [diff] [blame] | 614 | * @engine_id: Engine to use for signing |
Simon Glass | ee38265 | 2013-05-07 06:12:01 +0000 | [diff] [blame] | 615 | * @return: 0 on success, <0 on failure |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 616 | */ |
Alexandru Gagniuc | 8fcea12 | 2021-02-19 12:45:17 -0600 | [diff] [blame] | 617 | int fit_image_add_verification_data(const char *keydir, const char *keyfile, |
| 618 | void *keydest, void *fit, int image_noffset, |
| 619 | const char *comment, int require_keys, const char *engine_id, |
Jan Kiszka | 4043f32 | 2022-01-14 10:21:19 +0100 | [diff] [blame] | 620 | const char *cmdname, const char* algo_name) |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 621 | { |
Simon Glass | ee38265 | 2013-05-07 06:12:01 +0000 | [diff] [blame] | 622 | const char *image_name; |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 623 | const void *data; |
| 624 | size_t size; |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 625 | int noffset; |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 626 | |
| 627 | /* Get image data and data length */ |
| 628 | if (fit_image_get_data(fit, image_noffset, &data, &size)) { |
| 629 | printf("Can't get image data/size\n"); |
| 630 | return -1; |
| 631 | } |
| 632 | |
Simon Glass | 25d6e6b | 2013-05-07 06:11:55 +0000 | [diff] [blame] | 633 | image_name = fit_get_name(fit, image_noffset, NULL); |
| 634 | |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 635 | /* Process all hash subnodes of the component image node */ |
Simon Glass | ee38265 | 2013-05-07 06:12:01 +0000 | [diff] [blame] | 636 | for (noffset = fdt_first_subnode(fit, image_noffset); |
| 637 | noffset >= 0; |
| 638 | noffset = fdt_next_subnode(fit, noffset)) { |
| 639 | const char *node_name; |
| 640 | int ret = 0; |
| 641 | |
| 642 | /* |
| 643 | * Check subnode name, must be equal to "hash" or "signature". |
| 644 | * Multiple hash nodes require unique unit node |
Andre Przywara | 3234ecd | 2017-12-04 02:05:10 +0000 | [diff] [blame] | 645 | * names, e.g. hash-1, hash-2, signature-1, etc. |
Simon Glass | ee38265 | 2013-05-07 06:12:01 +0000 | [diff] [blame] | 646 | */ |
| 647 | node_name = fit_get_name(fit, noffset, NULL); |
| 648 | if (!strncmp(node_name, FIT_HASH_NODENAME, |
| 649 | strlen(FIT_HASH_NODENAME))) { |
| 650 | ret = fit_image_process_hash(fit, image_name, noffset, |
| 651 | data, size); |
Alexandru Gagniuc | 8fcea12 | 2021-02-19 12:45:17 -0600 | [diff] [blame] | 652 | } else if (IMAGE_ENABLE_SIGN && (keydir || keyfile) && |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 653 | !strncmp(node_name, FIT_SIG_NODENAME, |
| 654 | strlen(FIT_SIG_NODENAME))) { |
Alexandru Gagniuc | 8fcea12 | 2021-02-19 12:45:17 -0600 | [diff] [blame] | 655 | ret = fit_image_process_sig(keydir, keyfile, keydest, |
Simon Glass | fbabc0f | 2013-06-13 15:10:01 -0700 | [diff] [blame] | 656 | fit, image_name, noffset, data, size, |
Jan Kiszka | 4043f32 | 2022-01-14 10:21:19 +0100 | [diff] [blame] | 657 | comment, require_keys, engine_id, cmdname, |
| 658 | algo_name); |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 659 | } |
Simon Glass | 89c3fb6 | 2021-11-12 12:28:12 -0700 | [diff] [blame] | 660 | if (ret < 0) |
Simon Glass | ec539f7 | 2016-07-03 09:40:44 -0600 | [diff] [blame] | 661 | return ret; |
Simon Glass | ee38265 | 2013-05-07 06:12:01 +0000 | [diff] [blame] | 662 | } |
| 663 | |
| 664 | return 0; |
| 665 | } |
| 666 | |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 667 | struct strlist { |
| 668 | int count; |
| 669 | char **strings; |
| 670 | }; |
| 671 | |
| 672 | static void strlist_init(struct strlist *list) |
| 673 | { |
| 674 | memset(list, '\0', sizeof(*list)); |
| 675 | } |
| 676 | |
| 677 | static void strlist_free(struct strlist *list) |
| 678 | { |
| 679 | int i; |
| 680 | |
| 681 | for (i = 0; i < list->count; i++) |
| 682 | free(list->strings[i]); |
| 683 | free(list->strings); |
| 684 | } |
| 685 | |
| 686 | static int strlist_add(struct strlist *list, const char *str) |
| 687 | { |
| 688 | char *dup; |
| 689 | |
| 690 | dup = strdup(str); |
| 691 | list->strings = realloc(list->strings, |
| 692 | (list->count + 1) * sizeof(char *)); |
| 693 | if (!list || !str) |
| 694 | return -1; |
| 695 | list->strings[list->count++] = dup; |
| 696 | |
| 697 | return 0; |
| 698 | } |
| 699 | |
Simon Glass | 6a0efc8 | 2021-11-12 12:28:06 -0700 | [diff] [blame] | 700 | static const char *fit_config_get_image_list(const void *fit, int noffset, |
| 701 | int *lenp, int *allow_missingp) |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 702 | { |
| 703 | static const char default_list[] = FIT_KERNEL_PROP "\0" |
| 704 | FIT_FDT_PROP; |
| 705 | const char *prop; |
| 706 | |
Simon Glass | 6a0efc8 | 2021-11-12 12:28:06 -0700 | [diff] [blame] | 707 | /* If there is an "sign-image" property, use that */ |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 708 | prop = fdt_getprop(fit, noffset, "sign-images", lenp); |
| 709 | if (prop) { |
| 710 | *allow_missingp = 0; |
| 711 | return *lenp ? prop : NULL; |
| 712 | } |
| 713 | |
| 714 | /* Default image list */ |
| 715 | *allow_missingp = 1; |
| 716 | *lenp = sizeof(default_list); |
| 717 | |
| 718 | return default_list; |
| 719 | } |
| 720 | |
Simon Glass | 6a0efc8 | 2021-11-12 12:28:06 -0700 | [diff] [blame] | 721 | /** |
| 722 | * fit_config_add_hash() - Add a list of nodes to hash for an image |
| 723 | * |
| 724 | * This adds a list of paths to image nodes (as referred to by a particular |
| 725 | * offset) that need to be hashed, to protect a configuration |
| 726 | * |
| 727 | * @fit: Pointer to the FIT format image header |
| 728 | * @image_noffset: Offset of image to process (e.g. /images/kernel-1) |
| 729 | * @node_inc: List of nodes to add to |
| 730 | * @conf_name Configuration-node name, child of /configurations node (only |
| 731 | * used for error messages) |
| 732 | * @sig_name Signature-node name (only used for error messages) |
| 733 | * @iname: Name of image being processed (e.g. "kernel-1" (only used |
| 734 | * for error messages) |
| 735 | */ |
| 736 | static int fit_config_add_hash(const void *fit, int image_noffset, |
| 737 | struct strlist *node_inc, const char *conf_name, |
| 738 | const char *sig_name, const char *iname) |
Philippe Reynes | 856bcc8 | 2020-11-24 14:39:47 +0100 | [diff] [blame] | 739 | { |
Simon Glass | 888c0c5 | 2021-11-12 12:28:07 -0700 | [diff] [blame] | 740 | char path[200]; |
Philippe Reynes | 856bcc8 | 2020-11-24 14:39:47 +0100 | [diff] [blame] | 741 | int noffset; |
| 742 | int hash_count; |
| 743 | int ret; |
| 744 | |
| 745 | ret = fdt_get_path(fit, image_noffset, path, sizeof(path)); |
| 746 | if (ret < 0) |
| 747 | goto err_path; |
| 748 | if (strlist_add(node_inc, path)) |
| 749 | goto err_mem; |
| 750 | |
Philippe Reynes | 856bcc8 | 2020-11-24 14:39:47 +0100 | [diff] [blame] | 751 | /* Add all this image's hashes */ |
| 752 | hash_count = 0; |
| 753 | for (noffset = fdt_first_subnode(fit, image_noffset); |
| 754 | noffset >= 0; |
| 755 | noffset = fdt_next_subnode(fit, noffset)) { |
| 756 | const char *name = fit_get_name(fit, noffset, NULL); |
| 757 | |
| 758 | if (strncmp(name, FIT_HASH_NODENAME, |
| 759 | strlen(FIT_HASH_NODENAME))) |
| 760 | continue; |
| 761 | ret = fdt_get_path(fit, noffset, path, sizeof(path)); |
| 762 | if (ret < 0) |
| 763 | goto err_path; |
| 764 | if (strlist_add(node_inc, path)) |
| 765 | goto err_mem; |
| 766 | hash_count++; |
| 767 | } |
| 768 | |
| 769 | if (!hash_count) { |
| 770 | printf("Failed to find any hash nodes in configuration '%s/%s' image '%s' - without these it is not possible to verify this image\n", |
| 771 | conf_name, sig_name, iname); |
| 772 | return -ENOMSG; |
| 773 | } |
| 774 | |
| 775 | /* Add this image's cipher node if present */ |
| 776 | noffset = fdt_subnode_offset(fit, image_noffset, |
| 777 | FIT_CIPHER_NODENAME); |
| 778 | if (noffset != -FDT_ERR_NOTFOUND) { |
| 779 | if (noffset < 0) { |
| 780 | printf("Failed to get cipher node in configuration '%s/%s' image '%s': %s\n", |
| 781 | conf_name, sig_name, iname, |
| 782 | fdt_strerror(noffset)); |
| 783 | return -EIO; |
| 784 | } |
| 785 | ret = fdt_get_path(fit, noffset, path, sizeof(path)); |
| 786 | if (ret < 0) |
| 787 | goto err_path; |
| 788 | if (strlist_add(node_inc, path)) |
| 789 | goto err_mem; |
| 790 | } |
| 791 | |
| 792 | return 0; |
| 793 | |
| 794 | err_mem: |
| 795 | printf("Out of memory processing configuration '%s/%s'\n", conf_name, |
| 796 | sig_name); |
| 797 | return -ENOMEM; |
| 798 | |
| 799 | err_path: |
| 800 | printf("Failed to get path for image '%s' in configuration '%s/%s': %s\n", |
| 801 | iname, conf_name, sig_name, fdt_strerror(ret)); |
| 802 | return -ENOENT; |
| 803 | } |
| 804 | |
Simon Glass | 6a0efc8 | 2021-11-12 12:28:06 -0700 | [diff] [blame] | 805 | /** |
| 806 | * fit_config_get_hash_list() - Get the regions to sign |
| 807 | * |
| 808 | * This calculates a list of nodes to hash for this particular configuration, |
| 809 | * returning it as a string list (struct strlist, not a devicetree string list) |
| 810 | * |
| 811 | * @fit: Pointer to the FIT format image header |
| 812 | * @conf_noffset: Offset of configuration node to sign (child of |
| 813 | * /configurations node) |
| 814 | * @sig_offset: Offset of signature node containing info about how to sign it |
| 815 | * (child of 'signatures' node) |
| 816 | * @return 0 if OK, -ENOENT if an image referred to by the configuration cannot |
| 817 | * be found, -ENOMSG if ther were no images in the configuration |
| 818 | */ |
| 819 | static int fit_config_get_hash_list(const void *fit, int conf_noffset, |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 820 | int sig_offset, struct strlist *node_inc) |
| 821 | { |
| 822 | int allow_missing; |
| 823 | const char *prop, *iname, *end; |
| 824 | const char *conf_name, *sig_name; |
Philippe Reynes | 856bcc8 | 2020-11-24 14:39:47 +0100 | [diff] [blame] | 825 | char name[200]; |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 826 | int image_count; |
| 827 | int ret, len; |
| 828 | |
| 829 | conf_name = fit_get_name(fit, conf_noffset, NULL); |
| 830 | sig_name = fit_get_name(fit, sig_offset, NULL); |
| 831 | |
| 832 | /* |
| 833 | * Build a list of nodes we need to hash. We always need the root |
| 834 | * node and the configuration. |
| 835 | */ |
| 836 | strlist_init(node_inc); |
| 837 | snprintf(name, sizeof(name), "%s/%s", FIT_CONFS_PATH, conf_name); |
| 838 | if (strlist_add(node_inc, "/") || |
| 839 | strlist_add(node_inc, name)) |
| 840 | goto err_mem; |
| 841 | |
| 842 | /* Get a list of images that we intend to sign */ |
Heiko Schocher | fdfd520 | 2014-03-03 12:19:23 +0100 | [diff] [blame] | 843 | prop = fit_config_get_image_list(fit, sig_offset, &len, |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 844 | &allow_missing); |
| 845 | if (!prop) |
| 846 | return 0; |
| 847 | |
| 848 | /* Locate the images */ |
| 849 | end = prop + len; |
| 850 | image_count = 0; |
| 851 | for (iname = prop; iname < end; iname += strlen(iname) + 1) { |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 852 | int image_noffset; |
Philippe Reynes | 1f7d9a2 | 2020-11-24 14:39:48 +0100 | [diff] [blame] | 853 | int index, max_index; |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 854 | |
Philippe Reynes | 1f7d9a2 | 2020-11-24 14:39:48 +0100 | [diff] [blame] | 855 | max_index = fdt_stringlist_count(fit, conf_noffset, iname); |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 856 | |
Philippe Reynes | 1f7d9a2 | 2020-11-24 14:39:48 +0100 | [diff] [blame] | 857 | for (index = 0; index < max_index; index++) { |
| 858 | image_noffset = fit_conf_get_prop_node_index(fit, conf_noffset, |
| 859 | iname, index); |
| 860 | |
| 861 | if (image_noffset < 0) { |
| 862 | printf("Failed to find image '%s' in configuration '%s/%s'\n", |
| 863 | iname, conf_name, sig_name); |
| 864 | if (allow_missing) |
| 865 | continue; |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 866 | |
Philippe Reynes | 1f7d9a2 | 2020-11-24 14:39:48 +0100 | [diff] [blame] | 867 | return -ENOENT; |
| 868 | } |
Patrick Oppenlander | 5964c3f | 2020-07-30 14:30:47 +1000 | [diff] [blame] | 869 | |
Simon Glass | 6a0efc8 | 2021-11-12 12:28:06 -0700 | [diff] [blame] | 870 | ret = fit_config_add_hash(fit, image_noffset, node_inc, |
| 871 | conf_name, sig_name, iname); |
Philippe Reynes | 1f7d9a2 | 2020-11-24 14:39:48 +0100 | [diff] [blame] | 872 | if (ret < 0) |
| 873 | return ret; |
| 874 | |
| 875 | image_count++; |
| 876 | } |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 877 | } |
| 878 | |
| 879 | if (!image_count) { |
| 880 | printf("Failed to find any images for configuration '%s/%s'\n", |
| 881 | conf_name, sig_name); |
| 882 | return -ENOMSG; |
| 883 | } |
| 884 | |
| 885 | return 0; |
| 886 | |
| 887 | err_mem: |
| 888 | printf("Out of memory processing configuration '%s/%s'\n", conf_name, |
| 889 | sig_name); |
| 890 | return -ENOMEM; |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 891 | } |
| 892 | |
Simon Glass | 6a0efc8 | 2021-11-12 12:28:06 -0700 | [diff] [blame] | 893 | /** |
| 894 | * fit_config_get_regions() - Get the regions to sign |
| 895 | * |
| 896 | * This calculates a list of node to hash for this particular configuration, |
| 897 | * then finds which regions of the devicetree they correspond to. |
| 898 | * |
| 899 | * @fit: Pointer to the FIT format image header |
| 900 | * @conf_noffset: Offset of configuration node to sign (child of |
| 901 | * /configurations node) |
| 902 | * @sig_offset: Offset of signature node containing info about how to sign it |
| 903 | * (child of 'signatures' node) |
| 904 | * @regionp: Returns list of regions that need to be hashed (allocated; must be |
| 905 | * freed by the caller) |
| 906 | * @region_count: Returns number of regions |
| 907 | * @region_propp: Returns string-list property containing the list of nodes |
| 908 | * that correspond to the regions. Each entry is a full path to the node. |
| 909 | * This is in devicetree format, i.e. a \0 between each string. This is |
| 910 | * allocated and must be freed by the caller. |
| 911 | * @region_proplen: Returns length of *@@region_propp in bytes |
| 912 | * @return 0 if OK, -ENOMEM if out of memory, -EIO if the regions to hash could |
| 913 | * not be found, -EINVAL if no registers were found to hash |
| 914 | */ |
| 915 | static int fit_config_get_regions(const void *fit, int conf_noffset, |
| 916 | int sig_offset, struct image_region **regionp, |
| 917 | int *region_countp, char **region_propp, |
| 918 | int *region_proplen) |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 919 | { |
| 920 | char * const exc_prop[] = {"data"}; |
| 921 | struct strlist node_inc; |
| 922 | struct image_region *region; |
| 923 | struct fdt_region fdt_regions[100]; |
| 924 | const char *conf_name, *sig_name; |
| 925 | char path[200]; |
| 926 | int count, i; |
| 927 | char *region_prop; |
| 928 | int ret, len; |
| 929 | |
| 930 | conf_name = fit_get_name(fit, conf_noffset, NULL); |
Simon Glass | 6a0efc8 | 2021-11-12 12:28:06 -0700 | [diff] [blame] | 931 | sig_name = fit_get_name(fit, sig_offset, NULL); |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 932 | debug("%s: conf='%s', sig='%s'\n", __func__, conf_name, sig_name); |
| 933 | |
| 934 | /* Get a list of nodes we want to hash */ |
Simon Glass | 6a0efc8 | 2021-11-12 12:28:06 -0700 | [diff] [blame] | 935 | ret = fit_config_get_hash_list(fit, conf_noffset, sig_offset, |
| 936 | &node_inc); |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 937 | if (ret) |
| 938 | return ret; |
| 939 | |
| 940 | /* Get a list of regions to hash */ |
| 941 | count = fdt_find_regions(fit, node_inc.strings, node_inc.count, |
| 942 | exc_prop, ARRAY_SIZE(exc_prop), |
| 943 | fdt_regions, ARRAY_SIZE(fdt_regions), |
| 944 | path, sizeof(path), 1); |
| 945 | if (count < 0) { |
| 946 | printf("Failed to hash configuration '%s/%s': %s\n", conf_name, |
| 947 | sig_name, fdt_strerror(ret)); |
| 948 | return -EIO; |
| 949 | } |
| 950 | if (count == 0) { |
| 951 | printf("No data to hash for configuration '%s/%s': %s\n", |
| 952 | conf_name, sig_name, fdt_strerror(ret)); |
| 953 | return -EINVAL; |
| 954 | } |
| 955 | |
| 956 | /* Build our list of data blocks */ |
| 957 | region = fit_region_make_list(fit, fdt_regions, count, NULL); |
| 958 | if (!region) { |
| 959 | printf("Out of memory hashing configuration '%s/%s'\n", |
| 960 | conf_name, sig_name); |
| 961 | return -ENOMEM; |
| 962 | } |
| 963 | |
| 964 | /* Create a list of all hashed properties */ |
| 965 | debug("Hash nodes:\n"); |
| 966 | for (i = len = 0; i < node_inc.count; i++) { |
| 967 | debug(" %s\n", node_inc.strings[i]); |
| 968 | len += strlen(node_inc.strings[i]) + 1; |
| 969 | } |
| 970 | region_prop = malloc(len); |
| 971 | if (!region_prop) { |
| 972 | printf("Out of memory setting up regions for configuration '%s/%s'\n", |
| 973 | conf_name, sig_name); |
| 974 | return -ENOMEM; |
| 975 | } |
| 976 | for (i = len = 0; i < node_inc.count; |
| 977 | len += strlen(node_inc.strings[i]) + 1, i++) |
| 978 | strcpy(region_prop + len, node_inc.strings[i]); |
| 979 | strlist_free(&node_inc); |
| 980 | |
| 981 | *region_countp = count; |
| 982 | *regionp = region; |
| 983 | *region_propp = region_prop; |
| 984 | *region_proplen = len; |
| 985 | |
| 986 | return 0; |
| 987 | } |
| 988 | |
Simon Glass | 89c3fb6 | 2021-11-12 12:28:12 -0700 | [diff] [blame] | 989 | /** |
| 990 | * fit_config_process_sig - Process a single subnode of the configurations/ node |
| 991 | * |
| 992 | * Generate a signed hash of the supplied data and store it in the node. |
| 993 | * |
| 994 | * @keydir: Directory containing keys to use for signing |
| 995 | * @keydest: Destination FDT blob to write public keys into (NULL if none) |
| 996 | * @fit: pointer to the FIT format image header |
| 997 | * @conf_name name of config being processed (used to display errors) |
| 998 | * @conf_noffset: Offset of configuration node, e.g. '/configurations/conf-1' |
| 999 | * @noffset: subnode offset, e.g. '/configurations/conf-1/sig-1' |
| 1000 | * @comment: Comment to add to signature nodes |
| 1001 | * @require_keys: Mark all keys as 'required' |
| 1002 | * @engine_id: Engine to use for signing |
| 1003 | * @cmdname: Command name used when reporting errors |
| 1004 | * @return keydest node if @keydest is non-NULL, else 0 if none; -ve error code |
| 1005 | * on failure |
| 1006 | */ |
Alexandru Gagniuc | 8fcea12 | 2021-02-19 12:45:17 -0600 | [diff] [blame] | 1007 | static int fit_config_process_sig(const char *keydir, const char *keyfile, |
Simon Glass | 6a0efc8 | 2021-11-12 12:28:06 -0700 | [diff] [blame] | 1008 | void *keydest, void *fit, const char *conf_name, |
Alexandru Gagniuc | 8fcea12 | 2021-02-19 12:45:17 -0600 | [diff] [blame] | 1009 | int conf_noffset, int noffset, const char *comment, |
Jan Kiszka | 4043f32 | 2022-01-14 10:21:19 +0100 | [diff] [blame] | 1010 | int require_keys, const char *engine_id, const char *cmdname, |
| 1011 | const char *algo_name) |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 1012 | { |
| 1013 | struct image_sign_info info; |
| 1014 | const char *node_name; |
| 1015 | struct image_region *region; |
| 1016 | char *region_prop; |
| 1017 | int region_proplen; |
| 1018 | int region_count; |
| 1019 | uint8_t *value; |
| 1020 | uint value_len; |
| 1021 | int ret; |
| 1022 | |
| 1023 | node_name = fit_get_name(fit, noffset, NULL); |
Simon Glass | 6a0efc8 | 2021-11-12 12:28:06 -0700 | [diff] [blame] | 1024 | if (fit_config_get_regions(fit, conf_noffset, noffset, ®ion, |
| 1025 | ®ion_count, ®ion_prop, |
| 1026 | ®ion_proplen)) |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 1027 | return -1; |
| 1028 | |
Alexandru Gagniuc | 8fcea12 | 2021-02-19 12:45:17 -0600 | [diff] [blame] | 1029 | if (fit_image_setup_sig(&info, keydir, keyfile, fit, conf_name, noffset, |
Jan Kiszka | 4043f32 | 2022-01-14 10:21:19 +0100 | [diff] [blame] | 1030 | require_keys ? "conf" : NULL, engine_id, |
| 1031 | algo_name)) |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 1032 | return -1; |
| 1033 | |
Andrew Duda | 6616c82 | 2016-11-08 18:53:41 +0000 | [diff] [blame] | 1034 | ret = info.crypto->sign(&info, region, region_count, &value, |
| 1035 | &value_len); |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 1036 | free(region); |
| 1037 | if (ret) { |
| 1038 | printf("Failed to sign '%s' signature node in '%s' conf node\n", |
| 1039 | node_name, conf_name); |
| 1040 | |
| 1041 | /* We allow keys to be missing */ |
| 1042 | if (ret == -ENOENT) |
| 1043 | return 0; |
| 1044 | return -1; |
| 1045 | } |
| 1046 | |
Simon Glass | 802aa82 | 2014-06-02 22:04:53 -0600 | [diff] [blame] | 1047 | ret = fit_image_write_sig(fit, noffset, value, value_len, comment, |
Jan Kiszka | 4043f32 | 2022-01-14 10:21:19 +0100 | [diff] [blame] | 1048 | region_prop, region_proplen, cmdname, |
| 1049 | algo_name); |
Simon Glass | 802aa82 | 2014-06-02 22:04:53 -0600 | [diff] [blame] | 1050 | if (ret) { |
| 1051 | if (ret == -FDT_ERR_NOSPACE) |
| 1052 | return -ENOSPC; |
| 1053 | printf("Can't write signature for '%s' signature node in '%s' conf node: %s\n", |
| 1054 | node_name, conf_name, fdt_strerror(ret)); |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 1055 | return -1; |
| 1056 | } |
| 1057 | free(value); |
| 1058 | free(region_prop); |
| 1059 | |
| 1060 | /* Get keyname again, as FDT has changed and invalidated our pointer */ |
Simon Glass | d7aabcc | 2020-03-18 11:44:06 -0600 | [diff] [blame] | 1061 | info.keyname = fdt_getprop(fit, noffset, FIT_KEY_HINT, NULL); |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 1062 | |
| 1063 | /* Write the public key into the supplied FDT file */ |
Simon Glass | 802aa82 | 2014-06-02 22:04:53 -0600 | [diff] [blame] | 1064 | if (keydest) { |
Andrew Duda | 6616c82 | 2016-11-08 18:53:41 +0000 | [diff] [blame] | 1065 | ret = info.crypto->add_verify_data(&info, keydest); |
Simon Glass | 94336dc | 2021-11-12 12:28:11 -0700 | [diff] [blame] | 1066 | if (ret < 0) { |
Masahiro Yamada | fe391a7 | 2017-10-27 15:04:21 +0900 | [diff] [blame] | 1067 | printf("Failed to add verification data for '%s' signature node in '%s' configuration node\n", |
Simon Glass | 802aa82 | 2014-06-02 22:04:53 -0600 | [diff] [blame] | 1068 | node_name, conf_name); |
Simon Glass | 802aa82 | 2014-06-02 22:04:53 -0600 | [diff] [blame] | 1069 | } |
Simon Glass | 89c3fb6 | 2021-11-12 12:28:12 -0700 | [diff] [blame] | 1070 | return ret; |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 1071 | } |
| 1072 | |
| 1073 | return 0; |
| 1074 | } |
| 1075 | |
Alexandru Gagniuc | 8fcea12 | 2021-02-19 12:45:17 -0600 | [diff] [blame] | 1076 | static int fit_config_add_verification_data(const char *keydir, |
| 1077 | const char *keyfile, void *keydest, void *fit, int conf_noffset, |
| 1078 | const char *comment, int require_keys, const char *engine_id, |
Simon Glass | e460726 | 2021-11-12 12:28:13 -0700 | [diff] [blame] | 1079 | const char *cmdname, const char *algo_name, |
| 1080 | struct image_summary *summary) |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 1081 | { |
| 1082 | const char *conf_name; |
| 1083 | int noffset; |
| 1084 | |
| 1085 | conf_name = fit_get_name(fit, conf_noffset, NULL); |
| 1086 | |
| 1087 | /* Process all hash subnodes of the configuration node */ |
| 1088 | for (noffset = fdt_first_subnode(fit, conf_noffset); |
| 1089 | noffset >= 0; |
| 1090 | noffset = fdt_next_subnode(fit, noffset)) { |
| 1091 | const char *node_name; |
| 1092 | int ret = 0; |
| 1093 | |
| 1094 | node_name = fit_get_name(fit, noffset, NULL); |
| 1095 | if (!strncmp(node_name, FIT_SIG_NODENAME, |
| 1096 | strlen(FIT_SIG_NODENAME))) { |
Alexandru Gagniuc | 8fcea12 | 2021-02-19 12:45:17 -0600 | [diff] [blame] | 1097 | ret = fit_config_process_sig(keydir, keyfile, keydest, |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 1098 | fit, conf_name, conf_noffset, noffset, comment, |
Jan Kiszka | 4043f32 | 2022-01-14 10:21:19 +0100 | [diff] [blame] | 1099 | require_keys, engine_id, cmdname, algo_name); |
Simon Glass | e460726 | 2021-11-12 12:28:13 -0700 | [diff] [blame] | 1100 | if (ret < 0) |
| 1101 | return ret; |
| 1102 | |
| 1103 | summary->sig_offset = noffset; |
| 1104 | fdt_get_path(fit, noffset, summary->sig_path, |
| 1105 | sizeof(summary->sig_path)); |
| 1106 | |
| 1107 | if (keydest) { |
| 1108 | summary->keydest_offset = ret; |
| 1109 | fdt_get_path(keydest, ret, |
| 1110 | summary->keydest_path, |
| 1111 | sizeof(summary->keydest_path)); |
| 1112 | } |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 1113 | } |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 1114 | } |
| 1115 | |
| 1116 | return 0; |
| 1117 | } |
| 1118 | |
Philippe Reynes | 3e3899c | 2022-03-28 22:57:02 +0200 | [diff] [blame] | 1119 | /* |
| 1120 | * 0) open file (open) |
| 1121 | * 1) read certificate (PEM_read_X509) |
| 1122 | * 2) get public key (X509_get_pubkey) |
| 1123 | * 3) provide der format (d2i_RSAPublicKey) |
| 1124 | */ |
| 1125 | static int read_pub_key(const char *keydir, const void *name, |
| 1126 | unsigned char **pubkey, int *pubkey_len) |
| 1127 | { |
| 1128 | char path[1024]; |
| 1129 | EVP_PKEY *key = NULL; |
| 1130 | X509 *cert; |
| 1131 | FILE *f; |
| 1132 | int ret; |
| 1133 | |
| 1134 | memset(path, 0, 1024); |
| 1135 | snprintf(path, sizeof(path), "%s/%s.crt", keydir, (char *)name); |
| 1136 | |
| 1137 | /* Open certificate file */ |
| 1138 | f = fopen(path, "r"); |
| 1139 | if (!f) { |
| 1140 | fprintf(stderr, "Couldn't open RSA certificate: '%s': %s\n", |
| 1141 | path, strerror(errno)); |
| 1142 | return -EACCES; |
| 1143 | } |
| 1144 | |
| 1145 | /* Read the certificate */ |
| 1146 | cert = NULL; |
| 1147 | if (!PEM_read_X509(f, &cert, NULL, NULL)) { |
| 1148 | printf("Couldn't read certificate"); |
| 1149 | ret = -EINVAL; |
| 1150 | goto err_cert; |
| 1151 | } |
| 1152 | |
| 1153 | /* Get the public key from the certificate. */ |
| 1154 | key = X509_get_pubkey(cert); |
| 1155 | if (!key) { |
| 1156 | printf("Couldn't read public key\n"); |
| 1157 | ret = -EINVAL; |
| 1158 | goto err_pubkey; |
| 1159 | } |
| 1160 | |
| 1161 | /* Get DER form */ |
| 1162 | ret = i2d_PublicKey(key, pubkey); |
| 1163 | if (ret < 0) { |
| 1164 | printf("Couldn't get DER form\n"); |
| 1165 | ret = -EINVAL; |
| 1166 | goto err_pubkey; |
| 1167 | } |
| 1168 | |
| 1169 | *pubkey_len = ret; |
| 1170 | ret = 0; |
| 1171 | |
| 1172 | err_pubkey: |
| 1173 | X509_free(cert); |
| 1174 | err_cert: |
| 1175 | fclose(f); |
| 1176 | return ret; |
| 1177 | } |
| 1178 | |
| 1179 | int fit_pre_load_data(const char *keydir, void *keydest, void *fit) |
| 1180 | { |
| 1181 | int pre_load_noffset; |
| 1182 | const void *algo_name; |
| 1183 | const void *key_name; |
| 1184 | unsigned char *pubkey = NULL; |
| 1185 | int ret, pubkey_len; |
| 1186 | |
| 1187 | if (!keydir || !keydest || !fit) |
| 1188 | return 0; |
| 1189 | |
| 1190 | /* Search node pre-load sig */ |
| 1191 | pre_load_noffset = fdt_path_offset(keydest, IMAGE_PRE_LOAD_PATH); |
| 1192 | if (pre_load_noffset < 0) { |
| 1193 | ret = 0; |
| 1194 | goto out; |
| 1195 | } |
| 1196 | |
| 1197 | algo_name = fdt_getprop(keydest, pre_load_noffset, "algo-name", NULL); |
| 1198 | key_name = fdt_getprop(keydest, pre_load_noffset, "key-name", NULL); |
| 1199 | |
| 1200 | /* Check that all mandatory properties are present */ |
| 1201 | if (!algo_name || !key_name) { |
| 1202 | if (!algo_name) |
| 1203 | printf("The property algo-name is missing in the node %s\n", |
| 1204 | IMAGE_PRE_LOAD_PATH); |
| 1205 | if (!key_name) |
| 1206 | printf("The property key-name is missing in the node %s\n", |
| 1207 | IMAGE_PRE_LOAD_PATH); |
Mark Kettenis | d4ba0b4 | 2022-04-26 19:24:38 +0200 | [diff] [blame] | 1208 | ret = -EINVAL; |
Philippe Reynes | 3e3899c | 2022-03-28 22:57:02 +0200 | [diff] [blame] | 1209 | goto out; |
| 1210 | } |
| 1211 | |
| 1212 | /* Read public key */ |
| 1213 | ret = read_pub_key(keydir, key_name, &pubkey, &pubkey_len); |
| 1214 | if (ret < 0) |
| 1215 | goto out; |
| 1216 | |
| 1217 | /* Add the public key to the device tree */ |
| 1218 | ret = fdt_setprop(keydest, pre_load_noffset, "public-key", |
| 1219 | pubkey, pubkey_len); |
| 1220 | if (ret) |
| 1221 | printf("Can't set public-key in node %s (ret = %d)\n", |
| 1222 | IMAGE_PRE_LOAD_PATH, ret); |
| 1223 | |
| 1224 | out: |
| 1225 | return ret; |
| 1226 | } |
| 1227 | |
Philippe Reynes | 3148e42 | 2019-12-18 18:25:41 +0100 | [diff] [blame] | 1228 | int fit_cipher_data(const char *keydir, void *keydest, void *fit, |
| 1229 | const char *comment, int require_keys, |
| 1230 | const char *engine_id, const char *cmdname) |
| 1231 | { |
| 1232 | int images_noffset; |
| 1233 | int noffset; |
| 1234 | int ret; |
| 1235 | |
| 1236 | /* Find images parent node offset */ |
| 1237 | images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH); |
| 1238 | if (images_noffset < 0) { |
| 1239 | printf("Can't find images parent node '%s' (%s)\n", |
| 1240 | FIT_IMAGES_PATH, fdt_strerror(images_noffset)); |
| 1241 | return images_noffset; |
| 1242 | } |
| 1243 | |
| 1244 | /* Process its subnodes, print out component images details */ |
| 1245 | for (noffset = fdt_first_subnode(fit, images_noffset); |
| 1246 | noffset >= 0; |
| 1247 | noffset = fdt_next_subnode(fit, noffset)) { |
| 1248 | /* |
| 1249 | * Direct child node of the images parent node, |
| 1250 | * i.e. component image node. |
| 1251 | */ |
| 1252 | ret = fit_image_cipher_data(keydir, keydest, |
| 1253 | fit, noffset, comment, |
| 1254 | require_keys, engine_id, |
| 1255 | cmdname); |
| 1256 | if (ret) |
| 1257 | return ret; |
| 1258 | } |
| 1259 | |
| 1260 | return 0; |
| 1261 | } |
| 1262 | |
Alexandru Gagniuc | 8fcea12 | 2021-02-19 12:45:17 -0600 | [diff] [blame] | 1263 | int fit_add_verification_data(const char *keydir, const char *keyfile, |
| 1264 | void *keydest, void *fit, const char *comment, |
| 1265 | int require_keys, const char *engine_id, |
Simon Glass | e460726 | 2021-11-12 12:28:13 -0700 | [diff] [blame] | 1266 | const char *cmdname, const char *algo_name, |
| 1267 | struct image_summary *summary) |
Simon Glass | ee38265 | 2013-05-07 06:12:01 +0000 | [diff] [blame] | 1268 | { |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 1269 | int images_noffset, confs_noffset; |
Simon Glass | ee38265 | 2013-05-07 06:12:01 +0000 | [diff] [blame] | 1270 | int noffset; |
| 1271 | int ret; |
| 1272 | |
| 1273 | /* Find images parent node offset */ |
| 1274 | images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH); |
| 1275 | if (images_noffset < 0) { |
| 1276 | printf("Can't find images parent node '%s' (%s)\n", |
| 1277 | FIT_IMAGES_PATH, fdt_strerror(images_noffset)); |
| 1278 | return images_noffset; |
| 1279 | } |
| 1280 | |
| 1281 | /* Process its subnodes, print out component images details */ |
| 1282 | for (noffset = fdt_first_subnode(fit, images_noffset); |
| 1283 | noffset >= 0; |
| 1284 | noffset = fdt_next_subnode(fit, noffset)) { |
| 1285 | /* |
| 1286 | * Direct child node of the images parent node, |
| 1287 | * i.e. component image node. |
| 1288 | */ |
Alexandru Gagniuc | 8fcea12 | 2021-02-19 12:45:17 -0600 | [diff] [blame] | 1289 | ret = fit_image_add_verification_data(keydir, keyfile, keydest, |
Alex Kiernan | 697fcdc | 2018-06-20 20:10:52 +0000 | [diff] [blame] | 1290 | fit, noffset, comment, require_keys, engine_id, |
Jan Kiszka | 4043f32 | 2022-01-14 10:21:19 +0100 | [diff] [blame] | 1291 | cmdname, algo_name); |
Simon Glass | ee38265 | 2013-05-07 06:12:01 +0000 | [diff] [blame] | 1292 | if (ret) |
| 1293 | return ret; |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 1294 | } |
| 1295 | |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 1296 | /* If there are no keys, we can't sign configurations */ |
Alexandru Gagniuc | 8fcea12 | 2021-02-19 12:45:17 -0600 | [diff] [blame] | 1297 | if (!IMAGE_ENABLE_SIGN || !(keydir || keyfile)) |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 1298 | return 0; |
| 1299 | |
| 1300 | /* Find configurations parent node offset */ |
| 1301 | confs_noffset = fdt_path_offset(fit, FIT_CONFS_PATH); |
| 1302 | if (confs_noffset < 0) { |
| 1303 | printf("Can't find images parent node '%s' (%s)\n", |
Heiko Schocher | 441f48d | 2014-08-11 11:02:17 +0200 | [diff] [blame] | 1304 | FIT_CONFS_PATH, fdt_strerror(confs_noffset)); |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 1305 | return -ENOENT; |
| 1306 | } |
| 1307 | |
| 1308 | /* Process its subnodes, print out component images details */ |
| 1309 | for (noffset = fdt_first_subnode(fit, confs_noffset); |
| 1310 | noffset >= 0; |
| 1311 | noffset = fdt_next_subnode(fit, noffset)) { |
Alexandru Gagniuc | 8fcea12 | 2021-02-19 12:45:17 -0600 | [diff] [blame] | 1312 | ret = fit_config_add_verification_data(keydir, keyfile, keydest, |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 1313 | fit, noffset, comment, |
George McCollister | 23d1489 | 2017-01-06 13:14:17 -0600 | [diff] [blame] | 1314 | require_keys, |
Jan Kiszka | 4043f32 | 2022-01-14 10:21:19 +0100 | [diff] [blame] | 1315 | engine_id, cmdname, |
Simon Glass | e460726 | 2021-11-12 12:28:13 -0700 | [diff] [blame] | 1316 | algo_name, summary); |
Simon Glass | 56ab8d6 | 2013-06-13 15:10:09 -0700 | [diff] [blame] | 1317 | if (ret) |
| 1318 | return ret; |
| 1319 | } |
| 1320 | |
Simon Glass | 10a1eca | 2013-05-07 06:11:54 +0000 | [diff] [blame] | 1321 | return 0; |
| 1322 | } |
Heiko Schocher | d7b4232 | 2014-03-03 12:19:30 +0100 | [diff] [blame] | 1323 | |
| 1324 | #ifdef CONFIG_FIT_SIGNATURE |
Simon Glass | 0571232 | 2020-03-18 11:44:03 -0600 | [diff] [blame] | 1325 | int fit_check_sign(const void *fit, const void *key, |
| 1326 | const char *fit_uname_config) |
Heiko Schocher | d7b4232 | 2014-03-03 12:19:30 +0100 | [diff] [blame] | 1327 | { |
| 1328 | int cfg_noffset; |
| 1329 | int ret; |
| 1330 | |
Simon Glass | 0571232 | 2020-03-18 11:44:03 -0600 | [diff] [blame] | 1331 | cfg_noffset = fit_conf_get_node(fit, fit_uname_config); |
Heiko Schocher | d7b4232 | 2014-03-03 12:19:30 +0100 | [diff] [blame] | 1332 | if (!cfg_noffset) |
| 1333 | return -1; |
| 1334 | |
Simon Glass | a559bb2 | 2020-03-18 11:43:56 -0600 | [diff] [blame] | 1335 | printf("Verifying Hash Integrity for node '%s'... ", |
| 1336 | fdt_get_name(fit, cfg_noffset, NULL)); |
Simon Glass | a51991d | 2014-06-12 07:24:53 -0600 | [diff] [blame] | 1337 | ret = fit_config_verify(fit, cfg_noffset); |
| 1338 | if (ret) |
| 1339 | return ret; |
Simon Glass | 0571232 | 2020-03-18 11:44:03 -0600 | [diff] [blame] | 1340 | printf("Verified OK, loading images\n"); |
Simon Glass | a51991d | 2014-06-12 07:24:53 -0600 | [diff] [blame] | 1341 | ret = bootm_host_load_images(fit, cfg_noffset); |
| 1342 | |
Heiko Schocher | d7b4232 | 2014-03-03 12:19:30 +0100 | [diff] [blame] | 1343 | return ret; |
| 1344 | } |
| 1345 | #endif |