Thomas Gleixner | b4d0d23 | 2019-05-20 19:08:01 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 2 | /* X.509 certificate parser |
| 3 | * |
| 4 | * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. |
| 5 | * Written by David Howells (dhowells@redhat.com) |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 6 | */ |
| 7 | |
| 8 | #define pr_fmt(fmt) "X.509: "fmt |
| 9 | #include <linux/kernel.h> |
David Howells | ace0107 | 2014-07-01 16:40:19 +0100 | [diff] [blame] | 10 | #include <linux/export.h> |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 11 | #include <linux/slab.h> |
| 12 | #include <linux/err.h> |
| 13 | #include <linux/oid_registry.h> |
Tadeusz Struk | db6c43b | 2016-02-02 10:08:53 -0800 | [diff] [blame] | 14 | #include <crypto/public_key.h> |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 15 | #include "x509_parser.h" |
Masahiro Yamada | 4fa8bc9 | 2018-03-23 22:04:37 +0900 | [diff] [blame] | 16 | #include "x509.asn1.h" |
| 17 | #include "x509_akid.asn1.h" |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 18 | |
| 19 | struct x509_parse_context { |
| 20 | struct x509_certificate *cert; /* Certificate being constructed */ |
| 21 | unsigned long data; /* Start of data */ |
| 22 | const void *cert_start; /* Start of cert content */ |
| 23 | const void *key; /* Key data */ |
| 24 | size_t key_size; /* Size of key data */ |
Vitaly Chikunov | f1774cb | 2019-04-11 18:51:17 +0300 | [diff] [blame] | 25 | const void *params; /* Key parameters */ |
| 26 | size_t params_size; /* Size of key parameters */ |
| 27 | enum OID key_algo; /* Public key algorithm */ |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 28 | enum OID last_oid; /* Last OID encountered */ |
| 29 | enum OID algo_oid; /* Algorithm OID */ |
| 30 | unsigned char nr_mpi; /* Number of MPIs stored */ |
| 31 | u8 o_size; /* Size of organizationName (O) */ |
| 32 | u8 cn_size; /* Size of commonName (CN) */ |
| 33 | u8 email_size; /* Size of emailAddress */ |
| 34 | u16 o_offset; /* Offset of organizationName (O) */ |
| 35 | u16 cn_offset; /* Offset of commonName (CN) */ |
| 36 | u16 email_offset; /* Offset of emailAddress */ |
David Howells | b92e657 | 2015-07-20 21:16:26 +0100 | [diff] [blame] | 37 | unsigned raw_akid_size; |
| 38 | const void *raw_akid; /* Raw authorityKeyId in ASN.1 */ |
| 39 | const void *akid_raw_issuer; /* Raw directoryName in authorityKeyId */ |
| 40 | unsigned akid_raw_issuer_size; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 41 | }; |
| 42 | |
| 43 | /* |
| 44 | * Free an X.509 certificate |
| 45 | */ |
| 46 | void x509_free_certificate(struct x509_certificate *cert) |
| 47 | { |
| 48 | if (cert) { |
David Howells | 3b76456 | 2016-04-06 16:13:33 +0100 | [diff] [blame] | 49 | public_key_free(cert->pub); |
David Howells | 77d0910 | 2016-04-06 16:13:33 +0100 | [diff] [blame] | 50 | public_key_signature_free(cert->sig); |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 51 | kfree(cert->issuer); |
| 52 | kfree(cert->subject); |
David Howells | 46963b7 | 2014-09-16 17:36:13 +0100 | [diff] [blame] | 53 | kfree(cert->id); |
| 54 | kfree(cert->skid); |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 55 | kfree(cert); |
| 56 | } |
| 57 | } |
David Howells | ace0107 | 2014-07-01 16:40:19 +0100 | [diff] [blame] | 58 | EXPORT_SYMBOL_GPL(x509_free_certificate); |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 59 | |
| 60 | /* |
| 61 | * Parse an X.509 certificate |
| 62 | */ |
| 63 | struct x509_certificate *x509_cert_parse(const void *data, size_t datalen) |
| 64 | { |
| 65 | struct x509_certificate *cert; |
| 66 | struct x509_parse_context *ctx; |
David Howells | 46963b7 | 2014-09-16 17:36:13 +0100 | [diff] [blame] | 67 | struct asymmetric_key_id *kid; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 68 | long ret; |
| 69 | |
| 70 | ret = -ENOMEM; |
| 71 | cert = kzalloc(sizeof(struct x509_certificate), GFP_KERNEL); |
| 72 | if (!cert) |
| 73 | goto error_no_cert; |
| 74 | cert->pub = kzalloc(sizeof(struct public_key), GFP_KERNEL); |
| 75 | if (!cert->pub) |
| 76 | goto error_no_ctx; |
David Howells | 77d0910 | 2016-04-06 16:13:33 +0100 | [diff] [blame] | 77 | cert->sig = kzalloc(sizeof(struct public_key_signature), GFP_KERNEL); |
| 78 | if (!cert->sig) |
| 79 | goto error_no_ctx; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 80 | ctx = kzalloc(sizeof(struct x509_parse_context), GFP_KERNEL); |
| 81 | if (!ctx) |
| 82 | goto error_no_ctx; |
| 83 | |
| 84 | ctx->cert = cert; |
| 85 | ctx->data = (unsigned long)data; |
| 86 | |
| 87 | /* Attempt to decode the certificate */ |
| 88 | ret = asn1_ber_decoder(&x509_decoder, ctx, data, datalen); |
| 89 | if (ret < 0) |
| 90 | goto error_decode; |
| 91 | |
David Howells | b92e657 | 2015-07-20 21:16:26 +0100 | [diff] [blame] | 92 | /* Decode the AuthorityKeyIdentifier */ |
| 93 | if (ctx->raw_akid) { |
| 94 | pr_devel("AKID: %u %*phN\n", |
| 95 | ctx->raw_akid_size, ctx->raw_akid_size, ctx->raw_akid); |
| 96 | ret = asn1_ber_decoder(&x509_akid_decoder, ctx, |
| 97 | ctx->raw_akid, ctx->raw_akid_size); |
| 98 | if (ret < 0) { |
| 99 | pr_warn("Couldn't decode AuthKeyIdentifier\n"); |
| 100 | goto error_decode; |
| 101 | } |
| 102 | } |
| 103 | |
Dan Carpenter | 4e88016 | 2017-06-08 14:47:49 +0100 | [diff] [blame] | 104 | ret = -ENOMEM; |
Tadeusz Struk | db6c43b | 2016-02-02 10:08:53 -0800 | [diff] [blame] | 105 | cert->pub->key = kmemdup(ctx->key, ctx->key_size, GFP_KERNEL); |
| 106 | if (!cert->pub->key) |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 107 | goto error_decode; |
| 108 | |
Tadeusz Struk | db6c43b | 2016-02-02 10:08:53 -0800 | [diff] [blame] | 109 | cert->pub->keylen = ctx->key_size; |
| 110 | |
Vitaly Chikunov | f1774cb | 2019-04-11 18:51:17 +0300 | [diff] [blame] | 111 | cert->pub->params = kmemdup(ctx->params, ctx->params_size, GFP_KERNEL); |
| 112 | if (!cert->pub->params) |
| 113 | goto error_decode; |
| 114 | |
| 115 | cert->pub->paramlen = ctx->params_size; |
| 116 | cert->pub->algo = ctx->key_algo; |
| 117 | |
David Howells | 6c2dc5a | 2016-04-06 16:13:34 +0100 | [diff] [blame] | 118 | /* Grab the signature bits */ |
| 119 | ret = x509_get_sig_params(cert); |
| 120 | if (ret < 0) |
| 121 | goto error_decode; |
| 122 | |
David Howells | 46963b7 | 2014-09-16 17:36:13 +0100 | [diff] [blame] | 123 | /* Generate cert issuer + serial number key ID */ |
| 124 | kid = asymmetric_key_generate_id(cert->raw_serial, |
| 125 | cert->raw_serial_size, |
| 126 | cert->raw_issuer, |
| 127 | cert->raw_issuer_size); |
| 128 | if (IS_ERR(kid)) { |
| 129 | ret = PTR_ERR(kid); |
| 130 | goto error_decode; |
| 131 | } |
| 132 | cert->id = kid; |
| 133 | |
David Howells | 6c2dc5a | 2016-04-06 16:13:34 +0100 | [diff] [blame] | 134 | /* Detect self-signed certificates */ |
| 135 | ret = x509_check_for_self_signed(cert); |
| 136 | if (ret < 0) |
| 137 | goto error_decode; |
| 138 | |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 139 | kfree(ctx); |
| 140 | return cert; |
| 141 | |
| 142 | error_decode: |
| 143 | kfree(ctx); |
| 144 | error_no_ctx: |
| 145 | x509_free_certificate(cert); |
| 146 | error_no_cert: |
| 147 | return ERR_PTR(ret); |
| 148 | } |
David Howells | ace0107 | 2014-07-01 16:40:19 +0100 | [diff] [blame] | 149 | EXPORT_SYMBOL_GPL(x509_cert_parse); |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 150 | |
| 151 | /* |
| 152 | * Note an OID when we find one for later processing when we know how |
| 153 | * to interpret it. |
| 154 | */ |
| 155 | int x509_note_OID(void *context, size_t hdrlen, |
| 156 | unsigned char tag, |
| 157 | const void *value, size_t vlen) |
| 158 | { |
| 159 | struct x509_parse_context *ctx = context; |
| 160 | |
| 161 | ctx->last_oid = look_up_OID(value, vlen); |
| 162 | if (ctx->last_oid == OID__NR) { |
| 163 | char buffer[50]; |
| 164 | sprint_oid(value, vlen, buffer, sizeof(buffer)); |
Randy Dunlap | cf75446 | 2012-10-03 16:04:46 -0700 | [diff] [blame] | 165 | pr_debug("Unknown OID: [%lu] %s\n", |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 166 | (unsigned long)value - ctx->data, buffer); |
| 167 | } |
| 168 | return 0; |
| 169 | } |
| 170 | |
| 171 | /* |
| 172 | * Save the position of the TBS data so that we can check the signature over it |
| 173 | * later. |
| 174 | */ |
| 175 | int x509_note_tbs_certificate(void *context, size_t hdrlen, |
| 176 | unsigned char tag, |
| 177 | const void *value, size_t vlen) |
| 178 | { |
| 179 | struct x509_parse_context *ctx = context; |
| 180 | |
| 181 | pr_debug("x509_note_tbs_certificate(,%zu,%02x,%ld,%zu)!\n", |
| 182 | hdrlen, tag, (unsigned long)value - ctx->data, vlen); |
| 183 | |
| 184 | ctx->cert->tbs = value - hdrlen; |
| 185 | ctx->cert->tbs_size = vlen + hdrlen; |
| 186 | return 0; |
| 187 | } |
| 188 | |
| 189 | /* |
| 190 | * Record the public key algorithm |
| 191 | */ |
| 192 | int x509_note_pkey_algo(void *context, size_t hdrlen, |
| 193 | unsigned char tag, |
| 194 | const void *value, size_t vlen) |
| 195 | { |
| 196 | struct x509_parse_context *ctx = context; |
| 197 | |
| 198 | pr_debug("PubKey Algo: %u\n", ctx->last_oid); |
| 199 | |
| 200 | switch (ctx->last_oid) { |
| 201 | case OID_md2WithRSAEncryption: |
| 202 | case OID_md3WithRSAEncryption: |
| 203 | default: |
| 204 | return -ENOPKG; /* Unsupported combination */ |
| 205 | |
| 206 | case OID_md4WithRSAEncryption: |
David Howells | 77d0910 | 2016-04-06 16:13:33 +0100 | [diff] [blame] | 207 | ctx->cert->sig->hash_algo = "md4"; |
David Howells | 0398849 | 2018-10-09 17:47:15 +0100 | [diff] [blame] | 208 | goto rsa_pkcs1; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 209 | |
| 210 | case OID_sha1WithRSAEncryption: |
David Howells | 77d0910 | 2016-04-06 16:13:33 +0100 | [diff] [blame] | 211 | ctx->cert->sig->hash_algo = "sha1"; |
David Howells | 0398849 | 2018-10-09 17:47:15 +0100 | [diff] [blame] | 212 | goto rsa_pkcs1; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 213 | |
| 214 | case OID_sha256WithRSAEncryption: |
David Howells | 77d0910 | 2016-04-06 16:13:33 +0100 | [diff] [blame] | 215 | ctx->cert->sig->hash_algo = "sha256"; |
David Howells | 0398849 | 2018-10-09 17:47:15 +0100 | [diff] [blame] | 216 | goto rsa_pkcs1; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 217 | |
| 218 | case OID_sha384WithRSAEncryption: |
David Howells | 77d0910 | 2016-04-06 16:13:33 +0100 | [diff] [blame] | 219 | ctx->cert->sig->hash_algo = "sha384"; |
David Howells | 0398849 | 2018-10-09 17:47:15 +0100 | [diff] [blame] | 220 | goto rsa_pkcs1; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 221 | |
| 222 | case OID_sha512WithRSAEncryption: |
David Howells | 77d0910 | 2016-04-06 16:13:33 +0100 | [diff] [blame] | 223 | ctx->cert->sig->hash_algo = "sha512"; |
David Howells | 0398849 | 2018-10-09 17:47:15 +0100 | [diff] [blame] | 224 | goto rsa_pkcs1; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 225 | |
| 226 | case OID_sha224WithRSAEncryption: |
David Howells | 77d0910 | 2016-04-06 16:13:33 +0100 | [diff] [blame] | 227 | ctx->cert->sig->hash_algo = "sha224"; |
David Howells | 0398849 | 2018-10-09 17:47:15 +0100 | [diff] [blame] | 228 | goto rsa_pkcs1; |
Vitaly Chikunov | 0d7a786 | 2019-04-11 18:51:20 +0300 | [diff] [blame] | 229 | |
Stefan Berger | 299f561 | 2021-03-16 17:07:37 -0400 | [diff] [blame] | 230 | case OID_id_ecdsa_with_sha1: |
| 231 | ctx->cert->sig->hash_algo = "sha1"; |
| 232 | goto ecdsa; |
| 233 | |
| 234 | case OID_id_ecdsa_with_sha224: |
| 235 | ctx->cert->sig->hash_algo = "sha224"; |
| 236 | goto ecdsa; |
| 237 | |
| 238 | case OID_id_ecdsa_with_sha256: |
| 239 | ctx->cert->sig->hash_algo = "sha256"; |
| 240 | goto ecdsa; |
| 241 | |
| 242 | case OID_id_ecdsa_with_sha384: |
| 243 | ctx->cert->sig->hash_algo = "sha384"; |
| 244 | goto ecdsa; |
| 245 | |
| 246 | case OID_id_ecdsa_with_sha512: |
| 247 | ctx->cert->sig->hash_algo = "sha512"; |
| 248 | goto ecdsa; |
| 249 | |
Vitaly Chikunov | 0d7a786 | 2019-04-11 18:51:20 +0300 | [diff] [blame] | 250 | case OID_gost2012Signature256: |
| 251 | ctx->cert->sig->hash_algo = "streebog256"; |
| 252 | goto ecrdsa; |
| 253 | |
| 254 | case OID_gost2012Signature512: |
| 255 | ctx->cert->sig->hash_algo = "streebog512"; |
| 256 | goto ecrdsa; |
Tianjia Zhang | 254f84f | 2020-09-21 00:21:01 +0800 | [diff] [blame] | 257 | |
| 258 | case OID_SM2_with_SM3: |
| 259 | ctx->cert->sig->hash_algo = "sm3"; |
| 260 | goto sm2; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 261 | } |
| 262 | |
David Howells | 0398849 | 2018-10-09 17:47:15 +0100 | [diff] [blame] | 263 | rsa_pkcs1: |
| 264 | ctx->cert->sig->pkey_algo = "rsa"; |
| 265 | ctx->cert->sig->encoding = "pkcs1"; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 266 | ctx->algo_oid = ctx->last_oid; |
| 267 | return 0; |
Vitaly Chikunov | 0d7a786 | 2019-04-11 18:51:20 +0300 | [diff] [blame] | 268 | ecrdsa: |
| 269 | ctx->cert->sig->pkey_algo = "ecrdsa"; |
| 270 | ctx->cert->sig->encoding = "raw"; |
| 271 | ctx->algo_oid = ctx->last_oid; |
| 272 | return 0; |
Tianjia Zhang | 254f84f | 2020-09-21 00:21:01 +0800 | [diff] [blame] | 273 | sm2: |
| 274 | ctx->cert->sig->pkey_algo = "sm2"; |
| 275 | ctx->cert->sig->encoding = "raw"; |
| 276 | ctx->algo_oid = ctx->last_oid; |
| 277 | return 0; |
Stefan Berger | 299f561 | 2021-03-16 17:07:37 -0400 | [diff] [blame] | 278 | ecdsa: |
| 279 | ctx->cert->sig->pkey_algo = "ecdsa"; |
| 280 | ctx->cert->sig->encoding = "x962"; |
| 281 | ctx->algo_oid = ctx->last_oid; |
| 282 | return 0; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 283 | } |
| 284 | |
| 285 | /* |
| 286 | * Note the whereabouts and type of the signature. |
| 287 | */ |
| 288 | int x509_note_signature(void *context, size_t hdrlen, |
| 289 | unsigned char tag, |
| 290 | const void *value, size_t vlen) |
| 291 | { |
| 292 | struct x509_parse_context *ctx = context; |
| 293 | |
| 294 | pr_debug("Signature type: %u size %zu\n", ctx->last_oid, vlen); |
| 295 | |
| 296 | if (ctx->last_oid != ctx->algo_oid) { |
| 297 | pr_warn("Got cert with pkey (%u) and sig (%u) algorithm OIDs\n", |
| 298 | ctx->algo_oid, ctx->last_oid); |
| 299 | return -EINVAL; |
| 300 | } |
| 301 | |
Vitaly Chikunov | 0d7a786 | 2019-04-11 18:51:20 +0300 | [diff] [blame] | 302 | if (strcmp(ctx->cert->sig->pkey_algo, "rsa") == 0 || |
Tianjia Zhang | 254f84f | 2020-09-21 00:21:01 +0800 | [diff] [blame] | 303 | strcmp(ctx->cert->sig->pkey_algo, "ecrdsa") == 0 || |
Stefan Berger | 299f561 | 2021-03-16 17:07:37 -0400 | [diff] [blame] | 304 | strcmp(ctx->cert->sig->pkey_algo, "sm2") == 0 || |
| 305 | strcmp(ctx->cert->sig->pkey_algo, "ecdsa") == 0) { |
Maciej S. Szmigiero | b65c32e | 2018-05-19 14:23:54 +0200 | [diff] [blame] | 306 | /* Discard the BIT STRING metadata */ |
| 307 | if (vlen < 1 || *(const u8 *)value != 0) |
| 308 | return -EBADMSG; |
| 309 | |
| 310 | value++; |
| 311 | vlen--; |
| 312 | } |
| 313 | |
David Howells | b426beb | 2013-08-30 16:18:02 +0100 | [diff] [blame] | 314 | ctx->cert->raw_sig = value; |
| 315 | ctx->cert->raw_sig_size = vlen; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 316 | return 0; |
| 317 | } |
| 318 | |
| 319 | /* |
David Howells | 84aabd4 | 2014-07-01 16:40:19 +0100 | [diff] [blame] | 320 | * Note the certificate serial number |
| 321 | */ |
| 322 | int x509_note_serial(void *context, size_t hdrlen, |
| 323 | unsigned char tag, |
| 324 | const void *value, size_t vlen) |
| 325 | { |
| 326 | struct x509_parse_context *ctx = context; |
| 327 | ctx->cert->raw_serial = value; |
| 328 | ctx->cert->raw_serial_size = vlen; |
| 329 | return 0; |
| 330 | } |
| 331 | |
| 332 | /* |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 333 | * Note some of the name segments from which we'll fabricate a name. |
| 334 | */ |
| 335 | int x509_extract_name_segment(void *context, size_t hdrlen, |
| 336 | unsigned char tag, |
| 337 | const void *value, size_t vlen) |
| 338 | { |
| 339 | struct x509_parse_context *ctx = context; |
| 340 | |
| 341 | switch (ctx->last_oid) { |
| 342 | case OID_commonName: |
| 343 | ctx->cn_size = vlen; |
| 344 | ctx->cn_offset = (unsigned long)value - ctx->data; |
| 345 | break; |
| 346 | case OID_organizationName: |
| 347 | ctx->o_size = vlen; |
| 348 | ctx->o_offset = (unsigned long)value - ctx->data; |
| 349 | break; |
| 350 | case OID_email_address: |
| 351 | ctx->email_size = vlen; |
| 352 | ctx->email_offset = (unsigned long)value - ctx->data; |
| 353 | break; |
| 354 | default: |
| 355 | break; |
| 356 | } |
| 357 | |
| 358 | return 0; |
| 359 | } |
| 360 | |
| 361 | /* |
| 362 | * Fabricate and save the issuer and subject names |
| 363 | */ |
| 364 | static int x509_fabricate_name(struct x509_parse_context *ctx, size_t hdrlen, |
| 365 | unsigned char tag, |
| 366 | char **_name, size_t vlen) |
| 367 | { |
| 368 | const void *name, *data = (const void *)ctx->data; |
| 369 | size_t namesize; |
| 370 | char *buffer; |
| 371 | |
| 372 | if (*_name) |
| 373 | return -EINVAL; |
| 374 | |
| 375 | /* Empty name string if no material */ |
| 376 | if (!ctx->cn_size && !ctx->o_size && !ctx->email_size) { |
| 377 | buffer = kmalloc(1, GFP_KERNEL); |
| 378 | if (!buffer) |
| 379 | return -ENOMEM; |
| 380 | buffer[0] = 0; |
| 381 | goto done; |
| 382 | } |
| 383 | |
| 384 | if (ctx->cn_size && ctx->o_size) { |
| 385 | /* Consider combining O and CN, but use only the CN if it is |
| 386 | * prefixed by the O, or a significant portion thereof. |
| 387 | */ |
| 388 | namesize = ctx->cn_size; |
| 389 | name = data + ctx->cn_offset; |
| 390 | if (ctx->cn_size >= ctx->o_size && |
| 391 | memcmp(data + ctx->cn_offset, data + ctx->o_offset, |
| 392 | ctx->o_size) == 0) |
| 393 | goto single_component; |
| 394 | if (ctx->cn_size >= 7 && |
| 395 | ctx->o_size >= 7 && |
| 396 | memcmp(data + ctx->cn_offset, data + ctx->o_offset, 7) == 0) |
| 397 | goto single_component; |
| 398 | |
| 399 | buffer = kmalloc(ctx->o_size + 2 + ctx->cn_size + 1, |
| 400 | GFP_KERNEL); |
| 401 | if (!buffer) |
| 402 | return -ENOMEM; |
| 403 | |
| 404 | memcpy(buffer, |
| 405 | data + ctx->o_offset, ctx->o_size); |
| 406 | buffer[ctx->o_size + 0] = ':'; |
| 407 | buffer[ctx->o_size + 1] = ' '; |
| 408 | memcpy(buffer + ctx->o_size + 2, |
| 409 | data + ctx->cn_offset, ctx->cn_size); |
| 410 | buffer[ctx->o_size + 2 + ctx->cn_size] = 0; |
| 411 | goto done; |
| 412 | |
| 413 | } else if (ctx->cn_size) { |
| 414 | namesize = ctx->cn_size; |
| 415 | name = data + ctx->cn_offset; |
| 416 | } else if (ctx->o_size) { |
| 417 | namesize = ctx->o_size; |
| 418 | name = data + ctx->o_offset; |
| 419 | } else { |
| 420 | namesize = ctx->email_size; |
| 421 | name = data + ctx->email_offset; |
| 422 | } |
| 423 | |
| 424 | single_component: |
| 425 | buffer = kmalloc(namesize + 1, GFP_KERNEL); |
| 426 | if (!buffer) |
| 427 | return -ENOMEM; |
| 428 | memcpy(buffer, name, namesize); |
| 429 | buffer[namesize] = 0; |
| 430 | |
| 431 | done: |
| 432 | *_name = buffer; |
| 433 | ctx->cn_size = 0; |
| 434 | ctx->o_size = 0; |
| 435 | ctx->email_size = 0; |
| 436 | return 0; |
| 437 | } |
| 438 | |
| 439 | int x509_note_issuer(void *context, size_t hdrlen, |
| 440 | unsigned char tag, |
| 441 | const void *value, size_t vlen) |
| 442 | { |
| 443 | struct x509_parse_context *ctx = context; |
Andrew Zaborowski | 7d30198 | 2021-11-09 16:16:49 +0100 | [diff] [blame] | 444 | struct asymmetric_key_id *kid; |
| 445 | |
David Howells | 84aabd4 | 2014-07-01 16:40:19 +0100 | [diff] [blame] | 446 | ctx->cert->raw_issuer = value; |
| 447 | ctx->cert->raw_issuer_size = vlen; |
Andrew Zaborowski | 7d30198 | 2021-11-09 16:16:49 +0100 | [diff] [blame] | 448 | |
| 449 | if (!ctx->cert->sig->auth_ids[2]) { |
| 450 | kid = asymmetric_key_generate_id(value, vlen, "", 0); |
| 451 | if (IS_ERR(kid)) |
| 452 | return PTR_ERR(kid); |
| 453 | ctx->cert->sig->auth_ids[2] = kid; |
| 454 | } |
| 455 | |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 456 | return x509_fabricate_name(ctx, hdrlen, tag, &ctx->cert->issuer, vlen); |
| 457 | } |
| 458 | |
| 459 | int x509_note_subject(void *context, size_t hdrlen, |
| 460 | unsigned char tag, |
| 461 | const void *value, size_t vlen) |
| 462 | { |
| 463 | struct x509_parse_context *ctx = context; |
David Howells | 84aabd4 | 2014-07-01 16:40:19 +0100 | [diff] [blame] | 464 | ctx->cert->raw_subject = value; |
| 465 | ctx->cert->raw_subject_size = vlen; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 466 | return x509_fabricate_name(ctx, hdrlen, tag, &ctx->cert->subject, vlen); |
| 467 | } |
| 468 | |
| 469 | /* |
Vitaly Chikunov | f1774cb | 2019-04-11 18:51:17 +0300 | [diff] [blame] | 470 | * Extract the parameters for the public key |
| 471 | */ |
| 472 | int x509_note_params(void *context, size_t hdrlen, |
| 473 | unsigned char tag, |
| 474 | const void *value, size_t vlen) |
| 475 | { |
| 476 | struct x509_parse_context *ctx = context; |
| 477 | |
| 478 | /* |
| 479 | * AlgorithmIdentifier is used three times in the x509, we should skip |
| 480 | * first and ignore third, using second one which is after subject and |
| 481 | * before subjectPublicKey. |
| 482 | */ |
| 483 | if (!ctx->cert->raw_subject || ctx->key) |
| 484 | return 0; |
| 485 | ctx->params = value - hdrlen; |
| 486 | ctx->params_size = vlen + hdrlen; |
| 487 | return 0; |
| 488 | } |
| 489 | |
| 490 | /* |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 491 | * Extract the data for the public key algorithm |
| 492 | */ |
| 493 | int x509_extract_key_data(void *context, size_t hdrlen, |
| 494 | unsigned char tag, |
| 495 | const void *value, size_t vlen) |
| 496 | { |
| 497 | struct x509_parse_context *ctx = context; |
Stefan Berger | d1a303e | 2021-03-16 17:07:36 -0400 | [diff] [blame] | 498 | enum OID oid; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 499 | |
Vitaly Chikunov | 0d7a786 | 2019-04-11 18:51:20 +0300 | [diff] [blame] | 500 | ctx->key_algo = ctx->last_oid; |
Tianjia Zhang | 254f84f | 2020-09-21 00:21:01 +0800 | [diff] [blame] | 501 | switch (ctx->last_oid) { |
| 502 | case OID_rsaEncryption: |
Vitaly Chikunov | 0d7a786 | 2019-04-11 18:51:20 +0300 | [diff] [blame] | 503 | ctx->cert->pub->pkey_algo = "rsa"; |
Tianjia Zhang | 254f84f | 2020-09-21 00:21:01 +0800 | [diff] [blame] | 504 | break; |
| 505 | case OID_gost2012PKey256: |
| 506 | case OID_gost2012PKey512: |
Vitaly Chikunov | 0d7a786 | 2019-04-11 18:51:20 +0300 | [diff] [blame] | 507 | ctx->cert->pub->pkey_algo = "ecrdsa"; |
Tianjia Zhang | 254f84f | 2020-09-21 00:21:01 +0800 | [diff] [blame] | 508 | break; |
| 509 | case OID_id_ecPublicKey: |
Stefan Berger | d1a303e | 2021-03-16 17:07:36 -0400 | [diff] [blame] | 510 | if (parse_OID(ctx->params, ctx->params_size, &oid) != 0) |
| 511 | return -EBADMSG; |
| 512 | |
| 513 | switch (oid) { |
| 514 | case OID_sm2: |
| 515 | ctx->cert->pub->pkey_algo = "sm2"; |
| 516 | break; |
Stefan Berger | 299f561 | 2021-03-16 17:07:37 -0400 | [diff] [blame] | 517 | case OID_id_prime192v1: |
| 518 | ctx->cert->pub->pkey_algo = "ecdsa-nist-p192"; |
| 519 | break; |
| 520 | case OID_id_prime256v1: |
| 521 | ctx->cert->pub->pkey_algo = "ecdsa-nist-p256"; |
| 522 | break; |
Saulo Alessandre | 2a8e615 | 2021-03-16 17:07:39 -0400 | [diff] [blame] | 523 | case OID_id_ansip384r1: |
| 524 | ctx->cert->pub->pkey_algo = "ecdsa-nist-p384"; |
| 525 | break; |
Stefan Berger | d1a303e | 2021-03-16 17:07:36 -0400 | [diff] [blame] | 526 | default: |
| 527 | return -ENOPKG; |
| 528 | } |
Tianjia Zhang | 254f84f | 2020-09-21 00:21:01 +0800 | [diff] [blame] | 529 | break; |
| 530 | default: |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 531 | return -ENOPKG; |
Tianjia Zhang | 254f84f | 2020-09-21 00:21:01 +0800 | [diff] [blame] | 532 | } |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 533 | |
David Howells | 67f7d60b | 2013-08-30 16:15:24 +0100 | [diff] [blame] | 534 | /* Discard the BIT STRING metadata */ |
Eric Biggers | 0f30cbea | 2017-12-08 15:13:27 +0000 | [diff] [blame] | 535 | if (vlen < 1 || *(const u8 *)value != 0) |
| 536 | return -EBADMSG; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 537 | ctx->key = value + 1; |
| 538 | ctx->key_size = vlen - 1; |
| 539 | return 0; |
| 540 | } |
| 541 | |
Chun-Yi Lee | 04b00bd | 2013-04-22 10:56:55 +0930 | [diff] [blame] | 542 | /* The keyIdentifier in AuthorityKeyIdentifier SEQUENCE is tag(CONT,PRIM,0) */ |
| 543 | #define SEQ_TAG_KEYID (ASN1_CONT << 6) |
| 544 | |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 545 | /* |
| 546 | * Process certificate extensions that are used to qualify the certificate. |
| 547 | */ |
| 548 | int x509_process_extension(void *context, size_t hdrlen, |
| 549 | unsigned char tag, |
| 550 | const void *value, size_t vlen) |
| 551 | { |
| 552 | struct x509_parse_context *ctx = context; |
David Howells | 46963b7 | 2014-09-16 17:36:13 +0100 | [diff] [blame] | 553 | struct asymmetric_key_id *kid; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 554 | const unsigned char *v = value; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 555 | |
| 556 | pr_debug("Extension: %u\n", ctx->last_oid); |
| 557 | |
| 558 | if (ctx->last_oid == OID_subjectKeyIdentifier) { |
| 559 | /* Get hold of the key fingerprint */ |
David Howells | 46963b7 | 2014-09-16 17:36:13 +0100 | [diff] [blame] | 560 | if (ctx->cert->skid || vlen < 3) |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 561 | return -EBADMSG; |
| 562 | if (v[0] != ASN1_OTS || v[1] != vlen - 2) |
| 563 | return -EBADMSG; |
| 564 | v += 2; |
| 565 | vlen -= 2; |
| 566 | |
David Howells | dd2f6c4 | 2014-10-03 16:17:02 +0100 | [diff] [blame] | 567 | ctx->cert->raw_skid_size = vlen; |
| 568 | ctx->cert->raw_skid = v; |
David Howells | a4c6e57 | 2015-07-20 21:16:32 +0100 | [diff] [blame] | 569 | kid = asymmetric_key_generate_id(v, vlen, "", 0); |
David Howells | 46963b7 | 2014-09-16 17:36:13 +0100 | [diff] [blame] | 570 | if (IS_ERR(kid)) |
| 571 | return PTR_ERR(kid); |
| 572 | ctx->cert->skid = kid; |
| 573 | pr_debug("subjkeyid %*phN\n", kid->len, kid->data); |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 574 | return 0; |
| 575 | } |
| 576 | |
| 577 | if (ctx->last_oid == OID_authorityKeyIdentifier) { |
| 578 | /* Get hold of the CA key fingerprint */ |
David Howells | b92e657 | 2015-07-20 21:16:26 +0100 | [diff] [blame] | 579 | ctx->raw_akid = v; |
| 580 | ctx->raw_akid_size = vlen; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 581 | return 0; |
| 582 | } |
| 583 | |
| 584 | return 0; |
| 585 | } |
| 586 | |
David Howells | fd19a3d | 2015-07-29 16:58:32 +0100 | [diff] [blame] | 587 | /** |
| 588 | * x509_decode_time - Decode an X.509 time ASN.1 object |
| 589 | * @_t: The time to fill in |
| 590 | * @hdrlen: The length of the object header |
| 591 | * @tag: The object tag |
| 592 | * @value: The object value |
| 593 | * @vlen: The size of the object value |
| 594 | * |
| 595 | * Decode an ASN.1 universal time or generalised time field into a struct the |
| 596 | * kernel can handle and check it for validity. The time is decoded thus: |
| 597 | * |
| 598 | * [RFC5280 §4.1.2.5] |
| 599 | * CAs conforming to this profile MUST always encode certificate validity |
| 600 | * dates through the year 2049 as UTCTime; certificate validity dates in |
| 601 | * 2050 or later MUST be encoded as GeneralizedTime. Conforming |
| 602 | * applications MUST be able to process validity dates that are encoded in |
| 603 | * either UTCTime or GeneralizedTime. |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 604 | */ |
David Howells | fd19a3d | 2015-07-29 16:58:32 +0100 | [diff] [blame] | 605 | int x509_decode_time(time64_t *_t, size_t hdrlen, |
| 606 | unsigned char tag, |
| 607 | const unsigned char *value, size_t vlen) |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 608 | { |
David Howells | ac4cbed | 2016-02-24 14:37:15 +0000 | [diff] [blame] | 609 | static const unsigned char month_lengths[] = { 31, 28, 31, 30, 31, 30, |
David Howells | fd19a3d | 2015-07-29 16:58:32 +0100 | [diff] [blame] | 610 | 31, 31, 30, 31, 30, 31 }; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 611 | const unsigned char *p = value; |
David Howells | fd19a3d | 2015-07-29 16:58:32 +0100 | [diff] [blame] | 612 | unsigned year, mon, day, hour, min, sec, mon_len; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 613 | |
David Howells | fd19a3d | 2015-07-29 16:58:32 +0100 | [diff] [blame] | 614 | #define dec2bin(X) ({ unsigned char x = (X) - '0'; if (x > 9) goto invalid_time; x; }) |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 615 | #define DD2bin(P) ({ unsigned x = dec2bin(P[0]) * 10 + dec2bin(P[1]); P += 2; x; }) |
| 616 | |
| 617 | if (tag == ASN1_UNITIM) { |
| 618 | /* UTCTime: YYMMDDHHMMSSZ */ |
| 619 | if (vlen != 13) |
| 620 | goto unsupported_time; |
David Howells | fd19a3d | 2015-07-29 16:58:32 +0100 | [diff] [blame] | 621 | year = DD2bin(p); |
| 622 | if (year >= 50) |
| 623 | year += 1900; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 624 | else |
David Howells | fd19a3d | 2015-07-29 16:58:32 +0100 | [diff] [blame] | 625 | year += 2000; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 626 | } else if (tag == ASN1_GENTIM) { |
| 627 | /* GenTime: YYYYMMDDHHMMSSZ */ |
| 628 | if (vlen != 15) |
| 629 | goto unsupported_time; |
David Howells | fd19a3d | 2015-07-29 16:58:32 +0100 | [diff] [blame] | 630 | year = DD2bin(p) * 100 + DD2bin(p); |
| 631 | if (year >= 1950 && year <= 2049) |
| 632 | goto invalid_time; |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 633 | } else { |
| 634 | goto unsupported_time; |
| 635 | } |
| 636 | |
David Howells | fd19a3d | 2015-07-29 16:58:32 +0100 | [diff] [blame] | 637 | mon = DD2bin(p); |
| 638 | day = DD2bin(p); |
| 639 | hour = DD2bin(p); |
| 640 | min = DD2bin(p); |
| 641 | sec = DD2bin(p); |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 642 | |
| 643 | if (*p != 'Z') |
| 644 | goto unsupported_time; |
| 645 | |
David Howells | cc25b99 | 2015-11-12 09:36:40 +0000 | [diff] [blame] | 646 | if (year < 1970 || |
| 647 | mon < 1 || mon > 12) |
| 648 | goto invalid_time; |
| 649 | |
| 650 | mon_len = month_lengths[mon - 1]; |
David Howells | fd19a3d | 2015-07-29 16:58:32 +0100 | [diff] [blame] | 651 | if (mon == 2) { |
| 652 | if (year % 4 == 0) { |
| 653 | mon_len = 29; |
| 654 | if (year % 100 == 0) { |
David Howells | ac4cbed | 2016-02-24 14:37:15 +0000 | [diff] [blame] | 655 | mon_len = 28; |
| 656 | if (year % 400 == 0) |
| 657 | mon_len = 29; |
David Howells | fd19a3d | 2015-07-29 16:58:32 +0100 | [diff] [blame] | 658 | } |
| 659 | } |
| 660 | } |
| 661 | |
David Howells | cc25b99 | 2015-11-12 09:36:40 +0000 | [diff] [blame] | 662 | if (day < 1 || day > mon_len || |
David Howells | 7650cb8 | 2016-02-24 14:37:54 +0000 | [diff] [blame] | 663 | hour > 24 || /* ISO 8601 permits 24:00:00 as midnight tomorrow */ |
sudip | 4dd17c9 | 2015-09-17 13:12:51 +0530 | [diff] [blame] | 664 | min > 59 || |
David Howells | da02559 | 2016-02-24 14:37:53 +0000 | [diff] [blame] | 665 | sec > 60) /* ISO 8601 permits leap seconds [X.680 46.3] */ |
David Howells | fd19a3d | 2015-07-29 16:58:32 +0100 | [diff] [blame] | 666 | goto invalid_time; |
David Howells | cc25b99 | 2015-11-12 09:36:40 +0000 | [diff] [blame] | 667 | |
David Howells | fd19a3d | 2015-07-29 16:58:32 +0100 | [diff] [blame] | 668 | *_t = mktime64(year, mon, day, hour, min, sec); |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 669 | return 0; |
| 670 | |
| 671 | unsupported_time: |
David Howells | fd19a3d | 2015-07-29 16:58:32 +0100 | [diff] [blame] | 672 | pr_debug("Got unsupported time [tag %02x]: '%*phN'\n", |
| 673 | tag, (int)vlen, value); |
| 674 | return -EBADMSG; |
| 675 | invalid_time: |
| 676 | pr_debug("Got invalid time [tag %02x]: '%*phN'\n", |
| 677 | tag, (int)vlen, value); |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 678 | return -EBADMSG; |
| 679 | } |
David Howells | fd19a3d | 2015-07-29 16:58:32 +0100 | [diff] [blame] | 680 | EXPORT_SYMBOL_GPL(x509_decode_time); |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 681 | |
| 682 | int x509_note_not_before(void *context, size_t hdrlen, |
| 683 | unsigned char tag, |
| 684 | const void *value, size_t vlen) |
| 685 | { |
| 686 | struct x509_parse_context *ctx = context; |
David Howells | fd19a3d | 2015-07-29 16:58:32 +0100 | [diff] [blame] | 687 | return x509_decode_time(&ctx->cert->valid_from, hdrlen, tag, value, vlen); |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 688 | } |
| 689 | |
| 690 | int x509_note_not_after(void *context, size_t hdrlen, |
| 691 | unsigned char tag, |
| 692 | const void *value, size_t vlen) |
| 693 | { |
| 694 | struct x509_parse_context *ctx = context; |
David Howells | fd19a3d | 2015-07-29 16:58:32 +0100 | [diff] [blame] | 695 | return x509_decode_time(&ctx->cert->valid_to, hdrlen, tag, value, vlen); |
David Howells | c26fd69 | 2012-09-24 17:11:48 +0100 | [diff] [blame] | 696 | } |
David Howells | b92e657 | 2015-07-20 21:16:26 +0100 | [diff] [blame] | 697 | |
| 698 | /* |
| 699 | * Note a key identifier-based AuthorityKeyIdentifier |
| 700 | */ |
| 701 | int x509_akid_note_kid(void *context, size_t hdrlen, |
| 702 | unsigned char tag, |
| 703 | const void *value, size_t vlen) |
| 704 | { |
| 705 | struct x509_parse_context *ctx = context; |
| 706 | struct asymmetric_key_id *kid; |
| 707 | |
| 708 | pr_debug("AKID: keyid: %*phN\n", (int)vlen, value); |
| 709 | |
David Howells | 77d0910 | 2016-04-06 16:13:33 +0100 | [diff] [blame] | 710 | if (ctx->cert->sig->auth_ids[1]) |
David Howells | b92e657 | 2015-07-20 21:16:26 +0100 | [diff] [blame] | 711 | return 0; |
| 712 | |
David Howells | a4c6e57 | 2015-07-20 21:16:32 +0100 | [diff] [blame] | 713 | kid = asymmetric_key_generate_id(value, vlen, "", 0); |
David Howells | b92e657 | 2015-07-20 21:16:26 +0100 | [diff] [blame] | 714 | if (IS_ERR(kid)) |
| 715 | return PTR_ERR(kid); |
| 716 | pr_debug("authkeyid %*phN\n", kid->len, kid->data); |
David Howells | 77d0910 | 2016-04-06 16:13:33 +0100 | [diff] [blame] | 717 | ctx->cert->sig->auth_ids[1] = kid; |
David Howells | b92e657 | 2015-07-20 21:16:26 +0100 | [diff] [blame] | 718 | return 0; |
| 719 | } |
| 720 | |
| 721 | /* |
| 722 | * Note a directoryName in an AuthorityKeyIdentifier |
| 723 | */ |
| 724 | int x509_akid_note_name(void *context, size_t hdrlen, |
| 725 | unsigned char tag, |
| 726 | const void *value, size_t vlen) |
| 727 | { |
| 728 | struct x509_parse_context *ctx = context; |
| 729 | |
| 730 | pr_debug("AKID: name: %*phN\n", (int)vlen, value); |
| 731 | |
| 732 | ctx->akid_raw_issuer = value; |
| 733 | ctx->akid_raw_issuer_size = vlen; |
| 734 | return 0; |
| 735 | } |
| 736 | |
| 737 | /* |
| 738 | * Note a serial number in an AuthorityKeyIdentifier |
| 739 | */ |
| 740 | int x509_akid_note_serial(void *context, size_t hdrlen, |
| 741 | unsigned char tag, |
| 742 | const void *value, size_t vlen) |
| 743 | { |
| 744 | struct x509_parse_context *ctx = context; |
| 745 | struct asymmetric_key_id *kid; |
| 746 | |
| 747 | pr_debug("AKID: serial: %*phN\n", (int)vlen, value); |
| 748 | |
David Howells | 77d0910 | 2016-04-06 16:13:33 +0100 | [diff] [blame] | 749 | if (!ctx->akid_raw_issuer || ctx->cert->sig->auth_ids[0]) |
David Howells | b92e657 | 2015-07-20 21:16:26 +0100 | [diff] [blame] | 750 | return 0; |
| 751 | |
| 752 | kid = asymmetric_key_generate_id(value, |
| 753 | vlen, |
| 754 | ctx->akid_raw_issuer, |
| 755 | ctx->akid_raw_issuer_size); |
| 756 | if (IS_ERR(kid)) |
| 757 | return PTR_ERR(kid); |
| 758 | |
| 759 | pr_debug("authkeyid %*phN\n", kid->len, kid->data); |
David Howells | 77d0910 | 2016-04-06 16:13:33 +0100 | [diff] [blame] | 760 | ctx->cert->sig->auth_ids[0] = kid; |
David Howells | b92e657 | 2015-07-20 21:16:26 +0100 | [diff] [blame] | 761 | return 0; |
| 762 | } |