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Commit | Line | Data |
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b1322259 | 1 | /* |
da1c088f | 2 | * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved. |
d02b48c6 | 3 | * |
3e4b43b9 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
b1322259 RS |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
d02b48c6 RE |
8 | */ |
9 | ||
10 | #include <stdio.h> | |
b39fc560 | 11 | #include "internal/cryptlib.h" |
ec577822 BM |
12 | #include <openssl/asn1.h> |
13 | #include <openssl/objects.h> | |
14 | #include <openssl/x509.h> | |
e947f396 | 15 | #include <openssl/x509v3.h> |
47b4ccea | 16 | #include <openssl/core_names.h> |
25f2138b | 17 | #include "crypto/x509.h" |
d02b48c6 | 18 | |
ccd86b68 | 19 | int X509_issuer_and_serial_cmp(const X509 *a, const X509 *b) |
0f113f3e MC |
20 | { |
21 | int i; | |
5cf6abd8 | 22 | const X509_CINF *ai, *bi; |
0f113f3e | 23 | |
e0331eb8 DDO |
24 | if (b == NULL) |
25 | return a != NULL; | |
26 | if (a == NULL) | |
27 | return -1; | |
5cf6abd8 DSH |
28 | ai = &a->cert_info; |
29 | bi = &b->cert_info; | |
81e49438 | 30 | i = ASN1_INTEGER_cmp(&ai->serialNumber, &bi->serialNumber); |
bc64c5a6 DDO |
31 | if (i != 0) |
32 | return i < 0 ? -1 : 1; | |
26a7d938 | 33 | return X509_NAME_cmp(ai->issuer, bi->issuer); |
0f113f3e | 34 | } |
d02b48c6 | 35 | |
cf1b7d96 | 36 | #ifndef OPENSSL_NO_MD5 |
6b691a5c | 37 | unsigned long X509_issuer_and_serial_hash(X509 *a) |
0f113f3e MC |
38 | { |
39 | unsigned long ret = 0; | |
bfb0641f | 40 | EVP_MD_CTX *ctx = EVP_MD_CTX_new(); |
0f113f3e | 41 | unsigned char md[16]; |
b7e28c0b | 42 | char *f = NULL; |
e72dbd8e | 43 | EVP_MD *digest = NULL; |
0f113f3e | 44 | |
6e59a892 RL |
45 | if (ctx == NULL) |
46 | goto err; | |
5cf6abd8 | 47 | f = X509_NAME_oneline(a->cert_info.issuer, NULL, 0); |
8130d654 MC |
48 | if (f == NULL) |
49 | goto err; | |
e72dbd8e SL |
50 | digest = EVP_MD_fetch(a->libctx, SN_md5, a->propq); |
51 | if (digest == NULL) | |
52 | goto err; | |
53 | ||
54 | if (!EVP_DigestInit_ex(ctx, digest, NULL)) | |
0f113f3e | 55 | goto err; |
6e59a892 | 56 | if (!EVP_DigestUpdate(ctx, (unsigned char *)f, strlen(f))) |
0f113f3e | 57 | goto err; |
0f113f3e | 58 | if (!EVP_DigestUpdate |
6e59a892 | 59 | (ctx, (unsigned char *)a->cert_info.serialNumber.data, |
81e49438 | 60 | (unsigned long)a->cert_info.serialNumber.length)) |
0f113f3e | 61 | goto err; |
6e59a892 | 62 | if (!EVP_DigestFinal_ex(ctx, &(md[0]), NULL)) |
0f113f3e MC |
63 | goto err; |
64 | ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) | | |
65 | ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L) | |
66 | ) & 0xffffffffL; | |
67 | err: | |
b7e28c0b | 68 | OPENSSL_free(f); |
e72dbd8e | 69 | EVP_MD_free(digest); |
bfb0641f | 70 | EVP_MD_CTX_free(ctx); |
26a7d938 | 71 | return ret; |
0f113f3e | 72 | } |
d02b48c6 | 73 | #endif |
0f113f3e | 74 | |
ccd86b68 | 75 | int X509_issuer_name_cmp(const X509 *a, const X509 *b) |
0f113f3e | 76 | { |
26a7d938 | 77 | return X509_NAME_cmp(a->cert_info.issuer, b->cert_info.issuer); |
0f113f3e | 78 | } |
d02b48c6 | 79 | |
ccd86b68 | 80 | int X509_subject_name_cmp(const X509 *a, const X509 *b) |
0f113f3e | 81 | { |
26a7d938 | 82 | return X509_NAME_cmp(a->cert_info.subject, b->cert_info.subject); |
0f113f3e | 83 | } |
d02b48c6 | 84 | |
ccd86b68 | 85 | int X509_CRL_cmp(const X509_CRL *a, const X509_CRL *b) |
0f113f3e | 86 | { |
26a7d938 | 87 | return X509_NAME_cmp(a->crl.issuer, b->crl.issuer); |
0f113f3e | 88 | } |
d02b48c6 | 89 | |
edc54021 | 90 | int X509_CRL_match(const X509_CRL *a, const X509_CRL *b) |
0f113f3e | 91 | { |
f2a04587 DDO |
92 | int rv; |
93 | ||
94 | if ((a->flags & EXFLAG_NO_FINGERPRINT) == 0 | |
95 | && (b->flags & EXFLAG_NO_FINGERPRINT) == 0) | |
96 | rv = memcmp(a->sha1_hash, b->sha1_hash, SHA_DIGEST_LENGTH); | |
97 | else | |
98 | return -2; | |
bc64c5a6 DDO |
99 | |
100 | return rv < 0 ? -1 : rv > 0; | |
0f113f3e | 101 | } |
edc54021 | 102 | |
1421aead | 103 | X509_NAME *X509_get_issuer_name(const X509 *a) |
0f113f3e | 104 | { |
26a7d938 | 105 | return a->cert_info.issuer; |
0f113f3e | 106 | } |
d02b48c6 | 107 | |
6b691a5c | 108 | unsigned long X509_issuer_name_hash(X509 *x) |
0f113f3e | 109 | { |
bf973d06 | 110 | return X509_NAME_hash_ex(x->cert_info.issuer, NULL, NULL, NULL); |
0f113f3e | 111 | } |
d02b48c6 | 112 | |
0e0c6821 DSH |
113 | #ifndef OPENSSL_NO_MD5 |
114 | unsigned long X509_issuer_name_hash_old(X509 *x) | |
0f113f3e | 115 | { |
26a7d938 | 116 | return X509_NAME_hash_old(x->cert_info.issuer); |
0f113f3e | 117 | } |
0e0c6821 DSH |
118 | #endif |
119 | ||
1421aead | 120 | X509_NAME *X509_get_subject_name(const X509 *a) |
0f113f3e | 121 | { |
26a7d938 | 122 | return a->cert_info.subject; |
0f113f3e | 123 | } |
d02b48c6 | 124 | |
22293ea1 | 125 | ASN1_INTEGER *X509_get_serialNumber(X509 *a) |
0f113f3e | 126 | { |
81e49438 | 127 | return &a->cert_info.serialNumber; |
0f113f3e | 128 | } |
d02b48c6 | 129 | |
68c12bfc DSH |
130 | const ASN1_INTEGER *X509_get0_serialNumber(const X509 *a) |
131 | { | |
132 | return &a->cert_info.serialNumber; | |
133 | } | |
134 | ||
6b691a5c | 135 | unsigned long X509_subject_name_hash(X509 *x) |
0f113f3e | 136 | { |
bf973d06 | 137 | return X509_NAME_hash_ex(x->cert_info.subject, NULL, NULL, NULL); |
0f113f3e | 138 | } |
731d9c5f | 139 | |
0e0c6821 DSH |
140 | #ifndef OPENSSL_NO_MD5 |
141 | unsigned long X509_subject_name_hash_old(X509 *x) | |
0f113f3e | 142 | { |
26a7d938 | 143 | return X509_NAME_hash_old(x->cert_info.subject); |
0f113f3e | 144 | } |
0e0c6821 DSH |
145 | #endif |
146 | ||
0f113f3e MC |
147 | /* |
148 | * Compare two certificates: they must be identical for this to work. NB: | |
149 | * Although "cmp" operations are generally prototyped to take "const" | |
150 | * arguments (eg. for use in STACKs), the way X509 handling is - these | |
151 | * operations may involve ensuring the hashes are up-to-date and ensuring | |
152 | * certain cert information is cached. So this is the point where the | |
153 | * "depth-first" constification tree has to halt with an evil cast. | |
e947f396 | 154 | */ |
ccd86b68 | 155 | int X509_cmp(const X509 *a, const X509 *b) |
e947f396 | 156 | { |
f2a04587 | 157 | int rv = 0; |
7e06a675 | 158 | |
3bed88a3 DDO |
159 | if (a == b) /* for efficiency */ |
160 | return 0; | |
0f113f3e | 161 | |
f2a04587 DDO |
162 | /* attempt to compute cert hash */ |
163 | (void)X509_check_purpose((X509 *)a, -1, 0); | |
164 | (void)X509_check_purpose((X509 *)b, -1, 0); | |
165 | ||
166 | if ((a->ex_flags & EXFLAG_NO_FINGERPRINT) == 0 | |
167 | && (b->ex_flags & EXFLAG_NO_FINGERPRINT) == 0) | |
168 | rv = memcmp(a->sha1_hash, b->sha1_hash, SHA_DIGEST_LENGTH); | |
bc64c5a6 DDO |
169 | if (rv != 0) |
170 | return rv < 0 ? -1 : 1; | |
f2a04587 | 171 | |
0f113f3e | 172 | /* Check for match against stored encoding too */ |
5cf6abd8 | 173 | if (!a->cert_info.enc.modified && !b->cert_info.enc.modified) { |
87a8405b DB |
174 | if (a->cert_info.enc.len < b->cert_info.enc.len) |
175 | return -1; | |
176 | if (a->cert_info.enc.len > b->cert_info.enc.len) | |
177 | return 1; | |
bc64c5a6 DDO |
178 | rv = memcmp(a->cert_info.enc.enc, |
179 | b->cert_info.enc.enc, a->cert_info.enc.len); | |
0f113f3e | 180 | } |
bc64c5a6 | 181 | return rv < 0 ? -1 : rv > 0; |
e947f396 | 182 | } |
d02b48c6 | 183 | |
c1be4d61 | 184 | int ossl_x509_add_cert_new(STACK_OF(X509) **p_sk, X509 *cert, int flags) |
eeccc237 | 185 | { |
0dca5ede | 186 | if (*p_sk == NULL && (*p_sk = sk_X509_new_null()) == NULL) { |
e077455e | 187 | ERR_raise(ERR_LIB_X509, ERR_R_CRYPTO_LIB); |
eeccc237 DDO |
188 | return 0; |
189 | } | |
daf1300b | 190 | return X509_add_cert(*p_sk, cert, flags); |
eeccc237 DDO |
191 | } |
192 | ||
193 | int X509_add_cert(STACK_OF(X509) *sk, X509 *cert, int flags) | |
194 | { | |
195 | if (sk == NULL) { | |
9311d0c4 | 196 | ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER); |
eeccc237 DDO |
197 | return 0; |
198 | } | |
199 | if ((flags & X509_ADD_FLAG_NO_DUP) != 0) { | |
200 | /* | |
201 | * not using sk_X509_set_cmp_func() and sk_X509_find() | |
202 | * because this re-orders the certs on the stack | |
203 | */ | |
204 | int i; | |
205 | ||
206 | for (i = 0; i < sk_X509_num(sk); i++) { | |
207 | if (X509_cmp(sk_X509_value(sk, i), cert) == 0) | |
208 | return 1; | |
209 | } | |
210 | } | |
64c428c3 PH |
211 | if ((flags & X509_ADD_FLAG_NO_SS) != 0) { |
212 | int ret = X509_self_signed(cert, 0); | |
213 | ||
214 | if (ret != 0) | |
215 | return ret > 0 ? 1 : 0; | |
216 | } | |
eeccc237 DDO |
217 | if (!sk_X509_insert(sk, cert, |
218 | (flags & X509_ADD_FLAG_PREPEND) != 0 ? 0 : -1)) { | |
e077455e | 219 | ERR_raise(ERR_LIB_X509, ERR_R_CRYPTO_LIB); |
eeccc237 DDO |
220 | return 0; |
221 | } | |
222 | if ((flags & X509_ADD_FLAG_UP_REF) != 0) | |
223 | (void)X509_up_ref(cert); | |
224 | return 1; | |
225 | } | |
226 | ||
227 | int X509_add_certs(STACK_OF(X509) *sk, STACK_OF(X509) *certs, int flags) | |
0dca5ede | 228 | /* compiler would allow 'const' for the certs, yet they may get up-ref'ed */ |
eeccc237 | 229 | { |
daf1300b DDO |
230 | if (sk == NULL) { |
231 | ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER); | |
232 | return 0; | |
233 | } | |
234 | return ossl_x509_add_certs_new(&sk, certs, flags); | |
235 | } | |
236 | ||
237 | int ossl_x509_add_certs_new(STACK_OF(X509) **p_sk, STACK_OF(X509) *certs, | |
238 | int flags) | |
0dca5ede | 239 | /* compiler would allow 'const' for the certs, yet they may get up-ref'ed */ |
daf1300b DDO |
240 | { |
241 | int n = sk_X509_num(certs /* may be NULL */); | |
eeccc237 | 242 | int i; |
bc64c5a6 | 243 | |
eeccc237 DDO |
244 | for (i = 0; i < n; i++) { |
245 | int j = (flags & X509_ADD_FLAG_PREPEND) == 0 ? i : n - 1 - i; | |
246 | /* if prepend, add certs in reverse order to keep original order */ | |
247 | ||
c1be4d61 | 248 | if (!ossl_x509_add_cert_new(p_sk, sk_X509_value(certs, j), flags)) |
eeccc237 DDO |
249 | return 0; |
250 | } | |
251 | return 1; | |
252 | } | |
253 | ||
450ea834 | 254 | int X509_NAME_cmp(const X509_NAME *a, const X509_NAME *b) |
0f113f3e MC |
255 | { |
256 | int ret; | |
c81a1509 | 257 | |
e0331eb8 DDO |
258 | if (b == NULL) |
259 | return a != NULL; | |
260 | if (a == NULL) | |
261 | return -1; | |
c81a1509 | 262 | |
e0331eb8 | 263 | /* Ensure canonical encoding is present and up to date */ |
72ded6f2 | 264 | if (a->canon_enc == NULL || a->modified) { |
0f113f3e MC |
265 | ret = i2d_X509_NAME((X509_NAME *)a, NULL); |
266 | if (ret < 0) | |
267 | return -2; | |
268 | } | |
1862dae8 | 269 | |
72ded6f2 | 270 | if (b->canon_enc == NULL || b->modified) { |
0f113f3e MC |
271 | ret = i2d_X509_NAME((X509_NAME *)b, NULL); |
272 | if (ret < 0) | |
273 | return -2; | |
274 | } | |
1862dae8 | 275 | |
74bcbea7 TM |
276 | ret = a->canon_enclen - b->canon_enclen; |
277 | if (ret == 0 && a->canon_enclen == 0) | |
278 | return 0; | |
279 | ||
ec597528 WD |
280 | if (ret == 0) { |
281 | if (a->canon_enc == NULL || b->canon_enc == NULL) | |
282 | return -2; | |
bc64c5a6 | 283 | ret = memcmp(a->canon_enc, b->canon_enc, a->canon_enclen); |
ec597528 | 284 | } |
d02b48c6 | 285 | |
bc64c5a6 | 286 | return ret < 0 ? -1 : ret > 0; |
0f113f3e | 287 | } |
d02b48c6 | 288 | |
bf973d06 DDO |
289 | unsigned long X509_NAME_hash_ex(const X509_NAME *x, OSSL_LIB_CTX *libctx, |
290 | const char *propq, int *ok) | |
0f113f3e MC |
291 | { |
292 | unsigned long ret = 0; | |
293 | unsigned char md[SHA_DIGEST_LENGTH]; | |
bf973d06 | 294 | EVP_MD *sha1 = EVP_MD_fetch(libctx, "SHA1", propq); |
945fde53 | 295 | int i2d_ret; |
0f113f3e MC |
296 | |
297 | /* Make sure X509_NAME structure contains valid cached encoding */ | |
945fde53 | 298 | i2d_ret = i2d_X509_NAME(x, NULL); |
bf973d06 DDO |
299 | if (ok != NULL) |
300 | *ok = 0; | |
945fde53 | 301 | if (i2d_ret >= 0 && sha1 != NULL |
bf973d06 DDO |
302 | && EVP_Digest(x->canon_enc, x->canon_enclen, md, NULL, sha1, NULL)) { |
303 | ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) | | |
304 | ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L) | |
305 | ) & 0xffffffffL; | |
306 | if (ok != NULL) | |
307 | *ok = 1; | |
308 | } | |
309 | EVP_MD_free(sha1); | |
26a7d938 | 310 | return ret; |
0f113f3e | 311 | } |
450ea834 | 312 | |
cf1b7d96 | 313 | #ifndef OPENSSL_NO_MD5 |
0f113f3e MC |
314 | /* |
315 | * I now DER encode the name and hash it. Since I cache the DER encoding, | |
316 | * this is reasonably efficient. | |
317 | */ | |
8cc86b81 | 318 | unsigned long X509_NAME_hash_old(const X509_NAME *x) |
0f113f3e | 319 | { |
47b4ccea | 320 | EVP_MD *md5 = EVP_MD_fetch(NULL, OSSL_DIGEST_NAME_MD5, "-fips"); |
bfb0641f | 321 | EVP_MD_CTX *md_ctx = EVP_MD_CTX_new(); |
0f113f3e MC |
322 | unsigned long ret = 0; |
323 | unsigned char md[16]; | |
324 | ||
47b4ccea RL |
325 | if (md5 == NULL || md_ctx == NULL) |
326 | goto end; | |
6e59a892 | 327 | |
0f113f3e | 328 | /* Make sure X509_NAME structure contains valid cached encoding */ |
945fde53 | 329 | if (i2d_X509_NAME(x, NULL) < 0) |
330 | goto end; | |
331 | ||
47b4ccea | 332 | if (EVP_DigestInit_ex(md_ctx, md5, NULL) |
6e59a892 RL |
333 | && EVP_DigestUpdate(md_ctx, x->bytes->data, x->bytes->length) |
334 | && EVP_DigestFinal_ex(md_ctx, md, NULL)) | |
0f113f3e MC |
335 | ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) | |
336 | ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L) | |
337 | ) & 0xffffffffL; | |
47b4ccea RL |
338 | |
339 | end: | |
bfb0641f | 340 | EVP_MD_CTX_free(md_ctx); |
47b4ccea | 341 | EVP_MD_free(md5); |
0f113f3e | 342 | |
26a7d938 | 343 | return ret; |
0f113f3e | 344 | } |
d02b48c6 RE |
345 | #endif |
346 | ||
347 | /* Search a stack of X509 for a match */ | |
8cc86b81 DDO |
348 | X509 *X509_find_by_issuer_and_serial(STACK_OF(X509) *sk, const X509_NAME *name, |
349 | const ASN1_INTEGER *serial) | |
0f113f3e MC |
350 | { |
351 | int i; | |
0f113f3e MC |
352 | X509 x, *x509 = NULL; |
353 | ||
354 | if (!sk) | |
355 | return NULL; | |
356 | ||
81e49438 | 357 | x.cert_info.serialNumber = *serial; |
8cc86b81 | 358 | x.cert_info.issuer = (X509_NAME *)name; /* won't modify it */ |
0f113f3e MC |
359 | |
360 | for (i = 0; i < sk_X509_num(sk); i++) { | |
361 | x509 = sk_X509_value(sk, i); | |
362 | if (X509_issuer_and_serial_cmp(x509, &x) == 0) | |
26a7d938 | 363 | return x509; |
0f113f3e | 364 | } |
26a7d938 | 365 | return NULL; |
0f113f3e | 366 | } |
d02b48c6 | 367 | |
8cc86b81 | 368 | X509 *X509_find_by_subject(STACK_OF(X509) *sk, const X509_NAME *name) |
0f113f3e MC |
369 | { |
370 | X509 *x509; | |
371 | int i; | |
372 | ||
373 | for (i = 0; i < sk_X509_num(sk); i++) { | |
374 | x509 = sk_X509_value(sk, i); | |
375 | if (X509_NAME_cmp(X509_get_subject_name(x509), name) == 0) | |
26a7d938 | 376 | return x509; |
0f113f3e | 377 | } |
26a7d938 | 378 | return NULL; |
0f113f3e | 379 | } |
d02b48c6 | 380 | |
fdaf7bee | 381 | EVP_PKEY *X509_get0_pubkey(const X509 *x) |
c01ff880 DSH |
382 | { |
383 | if (x == NULL) | |
384 | return NULL; | |
385 | return X509_PUBKEY_get0(x->cert_info.key); | |
386 | } | |
387 | ||
6b691a5c | 388 | EVP_PKEY *X509_get_pubkey(X509 *x) |
0f113f3e | 389 | { |
5cf6abd8 | 390 | if (x == NULL) |
c01ff880 DSH |
391 | return NULL; |
392 | return X509_PUBKEY_get(x->cert_info.key); | |
0f113f3e | 393 | } |
dfeab068 | 394 | |
aaabe580 | 395 | int X509_check_private_key(const X509 *cert, const EVP_PKEY *pkey) |
0f113f3e | 396 | { |
aaabe580 | 397 | const EVP_PKEY *xk = X509_get0_pubkey(cert); |
0f113f3e | 398 | |
10af9769 P |
399 | if (xk == NULL) { |
400 | ERR_raise(ERR_LIB_X509, X509_R_UNABLE_TO_GET_CERTS_PUBLIC_KEY); | |
401 | return 0; | |
402 | } | |
aaabe580 DDO |
403 | return ossl_x509_check_private_key(xk, pkey); |
404 | } | |
0f113f3e | 405 | |
aaabe580 DDO |
406 | int ossl_x509_check_private_key(const EVP_PKEY *x, const EVP_PKEY *pkey) |
407 | { | |
408 | if (x == NULL) { | |
409 | ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER); | |
410 | return 0; | |
411 | } | |
412 | switch (EVP_PKEY_eq(x, pkey)) { | |
413 | case 1: | |
414 | return 1; | |
0f113f3e | 415 | case 0: |
9311d0c4 | 416 | ERR_raise(ERR_LIB_X509, X509_R_KEY_VALUES_MISMATCH); |
aaabe580 | 417 | return 0; |
0f113f3e | 418 | case -1: |
9311d0c4 | 419 | ERR_raise(ERR_LIB_X509, X509_R_KEY_TYPE_MISMATCH); |
aaabe580 | 420 | return 0; |
0f113f3e | 421 | case -2: |
9311d0c4 | 422 | ERR_raise(ERR_LIB_X509, X509_R_UNKNOWN_KEY_TYPE); |
aaabe580 DDO |
423 | /* fall thru */ |
424 | default: | |
425 | return 0; | |
0f113f3e | 426 | } |
0f113f3e MC |
427 | } |
428 | ||
429 | /* | |
430 | * Check a suite B algorithm is permitted: pass in a public key and the NID | |
431 | * of its signature (or 0 if no signature). The pflags is a pointer to a | |
432 | * flags field which must contain the suite B verification flags. | |
3ad344a5 DSH |
433 | */ |
434 | ||
14536c8c DSH |
435 | #ifndef OPENSSL_NO_EC |
436 | ||
3ad344a5 | 437 | static int check_suite_b(EVP_PKEY *pkey, int sign_nid, unsigned long *pflags) |
0f113f3e | 438 | { |
5b5eea4b SL |
439 | char curve_name[80]; |
440 | size_t curve_name_len; | |
0f113f3e | 441 | int curve_nid; |
5b5eea4b SL |
442 | |
443 | if (pkey == NULL || !EVP_PKEY_is_a(pkey, "EC")) | |
0f113f3e | 444 | return X509_V_ERR_SUITE_B_INVALID_ALGORITHM; |
5b5eea4b | 445 | |
0c8e98e6 TM |
446 | if (!EVP_PKEY_get_group_name(pkey, curve_name, sizeof(curve_name), |
447 | &curve_name_len)) | |
5b5eea4b SL |
448 | return X509_V_ERR_SUITE_B_INVALID_CURVE; |
449 | ||
450 | curve_nid = OBJ_txt2nid(curve_name); | |
0f113f3e MC |
451 | /* Check curve is consistent with LOS */ |
452 | if (curve_nid == NID_secp384r1) { /* P-384 */ | |
453 | /* | |
454 | * Check signature algorithm is consistent with curve. | |
455 | */ | |
456 | if (sign_nid != -1 && sign_nid != NID_ecdsa_with_SHA384) | |
457 | return X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM; | |
458 | if (!(*pflags & X509_V_FLAG_SUITEB_192_LOS)) | |
459 | return X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED; | |
460 | /* If we encounter P-384 we cannot use P-256 later */ | |
461 | *pflags &= ~X509_V_FLAG_SUITEB_128_LOS_ONLY; | |
462 | } else if (curve_nid == NID_X9_62_prime256v1) { /* P-256 */ | |
463 | if (sign_nid != -1 && sign_nid != NID_ecdsa_with_SHA256) | |
464 | return X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM; | |
465 | if (!(*pflags & X509_V_FLAG_SUITEB_128_LOS_ONLY)) | |
466 | return X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED; | |
bc64c5a6 | 467 | } else { |
0f113f3e | 468 | return X509_V_ERR_SUITE_B_INVALID_CURVE; |
bc64c5a6 | 469 | } |
0f113f3e MC |
470 | return X509_V_OK; |
471 | } | |
3ad344a5 | 472 | |
3b0648eb | 473 | int X509_chain_check_suiteb(int *perror_depth, X509 *x, STACK_OF(X509) *chain, |
0f113f3e MC |
474 | unsigned long flags) |
475 | { | |
476 | int rv, i, sign_nid; | |
6e328256 VD |
477 | EVP_PKEY *pk; |
478 | unsigned long tflags = flags; | |
479 | ||
0f113f3e MC |
480 | if (!(flags & X509_V_FLAG_SUITEB_128_LOS)) |
481 | return X509_V_OK; | |
6e328256 | 482 | |
0f113f3e MC |
483 | /* If no EE certificate passed in must be first in chain */ |
484 | if (x == NULL) { | |
485 | x = sk_X509_value(chain, 0); | |
486 | i = 1; | |
bc64c5a6 | 487 | } else { |
0f113f3e | 488 | i = 0; |
bc64c5a6 | 489 | } |
6e328256 VD |
490 | pk = X509_get0_pubkey(x); |
491 | ||
492 | /* | |
493 | * With DANE-EE(3) success, or DANE-EE(3)/PKIX-EE(1) failure we don't build | |
494 | * a chain all, just report trust success or failure, but must also report | |
495 | * Suite-B errors if applicable. This is indicated via a NULL chain | |
496 | * pointer. All we need to do is check the leaf key algorithm. | |
497 | */ | |
498 | if (chain == NULL) | |
499 | return check_suite_b(pk, -1, &tflags); | |
500 | ||
cdf63a37 | 501 | if (X509_get_version(x) != X509_VERSION_3) { |
0f113f3e MC |
502 | rv = X509_V_ERR_SUITE_B_INVALID_VERSION; |
503 | /* Correct error depth */ | |
504 | i = 0; | |
505 | goto end; | |
506 | } | |
507 | ||
0f113f3e MC |
508 | /* Check EE key only */ |
509 | rv = check_suite_b(pk, -1, &tflags); | |
510 | if (rv != X509_V_OK) { | |
511 | /* Correct error depth */ | |
512 | i = 0; | |
513 | goto end; | |
514 | } | |
515 | for (; i < sk_X509_num(chain); i++) { | |
516 | sign_nid = X509_get_signature_nid(x); | |
517 | x = sk_X509_value(chain, i); | |
cdf63a37 | 518 | if (X509_get_version(x) != X509_VERSION_3) { |
0f113f3e MC |
519 | rv = X509_V_ERR_SUITE_B_INVALID_VERSION; |
520 | goto end; | |
521 | } | |
8382fd3a | 522 | pk = X509_get0_pubkey(x); |
0f113f3e MC |
523 | rv = check_suite_b(pk, sign_nid, &tflags); |
524 | if (rv != X509_V_OK) | |
525 | goto end; | |
526 | } | |
527 | ||
528 | /* Final check: root CA signature */ | |
529 | rv = check_suite_b(pk, X509_get_signature_nid(x), &tflags); | |
530 | end: | |
0f113f3e MC |
531 | if (rv != X509_V_OK) { |
532 | /* Invalid signature or LOS errors are for previous cert */ | |
533 | if ((rv == X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM | |
534 | || rv == X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED) && i) | |
535 | i--; | |
536 | /* | |
537 | * If we have LOS error and flags changed then we are signing P-384 | |
0d4fb843 | 538 | * with P-256. Use more meaningful error. |
0f113f3e MC |
539 | */ |
540 | if (rv == X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED && flags != tflags) | |
541 | rv = X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256; | |
542 | if (perror_depth) | |
543 | *perror_depth = i; | |
544 | } | |
545 | return rv; | |
546 | } | |
3ad344a5 | 547 | |
3b0648eb | 548 | int X509_CRL_check_suiteb(X509_CRL *crl, EVP_PKEY *pk, unsigned long flags) |
0f113f3e MC |
549 | { |
550 | int sign_nid; | |
551 | if (!(flags & X509_V_FLAG_SUITEB_128_LOS)) | |
552 | return X509_V_OK; | |
6e63c142 | 553 | sign_nid = OBJ_obj2nid(crl->crl.sig_alg.algorithm); |
0f113f3e MC |
554 | return check_suite_b(pk, sign_nid, &flags); |
555 | } | |
14536c8c DSH |
556 | |
557 | #else | |
558 | int X509_chain_check_suiteb(int *perror_depth, X509 *x, STACK_OF(X509) *chain, | |
0f113f3e MC |
559 | unsigned long flags) |
560 | { | |
561 | return 0; | |
562 | } | |
14536c8c DSH |
563 | |
564 | int X509_CRL_check_suiteb(X509_CRL *crl, EVP_PKEY *pk, unsigned long flags) | |
0f113f3e MC |
565 | { |
566 | return 0; | |
567 | } | |
14536c8c DSH |
568 | |
569 | #endif | |
d53b437f | 570 | |
0f113f3e MC |
571 | /* |
572 | * Not strictly speaking an "up_ref" as a STACK doesn't have a reference | |
573 | * count but it has the same effect by duping the STACK and upping the ref of | |
574 | * each X509 structure. | |
3b0648eb DSH |
575 | */ |
576 | STACK_OF(X509) *X509_chain_up_ref(STACK_OF(X509) *chain) | |
0f113f3e | 577 | { |
d53b437f | 578 | STACK_OF(X509) *ret = sk_X509_dup(chain); |
0f113f3e | 579 | int i; |
d53b437f | 580 | |
cae665df BE |
581 | if (ret == NULL) |
582 | return NULL; | |
0f113f3e MC |
583 | for (i = 0; i < sk_X509_num(ret); i++) { |
584 | X509 *x = sk_X509_value(ret, i); | |
d53b437f | 585 | |
cae665df BE |
586 | if (!X509_up_ref(x)) |
587 | goto err; | |
0f113f3e MC |
588 | } |
589 | return ret; | |
d53b437f | 590 | |
cae665df BE |
591 | err: |
592 | while (i-- > 0) | |
bc64c5a6 | 593 | X509_free(sk_X509_value(ret, i)); |
cae665df BE |
594 | sk_X509_free(ret); |
595 | return NULL; | |
0f113f3e | 596 | } |