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Commit | Line | Data |
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0f113f3e | 1 | /* |
33388b44 | 2 | * Copyright 2006-2020 The OpenSSL Project Authors. All Rights Reserved. |
448be743 | 3 | * |
365a2d99 | 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 | |
448be743 DSH |
8 | */ |
9 | ||
e4468e6d P |
10 | /* We need to use some engine deprecated APIs */ |
11 | #define OPENSSL_SUPPRESS_DEPRECATED | |
12 | ||
677963e5 | 13 | #include "e_os.h" /* for strncasecmp */ |
b39fc560 | 14 | #include "internal/cryptlib.h" |
677963e5 | 15 | #include <stdio.h> |
448be743 DSH |
16 | #include <openssl/asn1t.h> |
17 | #include <openssl/x509.h> | |
3c27208f | 18 | #include <openssl/engine.h> |
25f2138b DMSP |
19 | #include "crypto/asn1.h" |
20 | #include "crypto/evp.h" | |
448be743 | 21 | |
2c166171 | 22 | #include "standard_methods.h" |
448be743 | 23 | |
0f113f3e | 24 | typedef int sk_cmp_fn_type(const char *const *a, const char *const *b); |
5ce278a7 | 25 | static STACK_OF(EVP_PKEY_ASN1_METHOD) *app_methods = NULL; |
18e377b4 | 26 | |
606f6c47 | 27 | DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *, |
0f113f3e | 28 | const EVP_PKEY_ASN1_METHOD *, ameth); |
babb3798 | 29 | |
0f113f3e MC |
30 | static int ameth_cmp(const EVP_PKEY_ASN1_METHOD *const *a, |
31 | const EVP_PKEY_ASN1_METHOD *const *b) | |
32 | { | |
33 | return ((*a)->pkey_id - (*b)->pkey_id); | |
34 | } | |
448be743 | 35 | |
606f6c47 | 36 | IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *, |
0f113f3e | 37 | const EVP_PKEY_ASN1_METHOD *, ameth); |
babb3798 | 38 | |
e4263314 | 39 | int EVP_PKEY_asn1_get_count(void) |
0f113f3e | 40 | { |
b6eb9827 | 41 | int num = OSSL_NELEM(standard_methods); |
0f113f3e MC |
42 | if (app_methods) |
43 | num += sk_EVP_PKEY_ASN1_METHOD_num(app_methods); | |
44 | return num; | |
45 | } | |
e4263314 DSH |
46 | |
47 | const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx) | |
0f113f3e | 48 | { |
b6eb9827 | 49 | int num = OSSL_NELEM(standard_methods); |
0f113f3e MC |
50 | if (idx < 0) |
51 | return NULL; | |
52 | if (idx < num) | |
53 | return standard_methods[idx]; | |
54 | idx -= num; | |
55 | return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx); | |
56 | } | |
e4263314 | 57 | |
01b8b3c7 | 58 | static const EVP_PKEY_ASN1_METHOD *pkey_asn1_find(int type) |
0f113f3e MC |
59 | { |
60 | EVP_PKEY_ASN1_METHOD tmp; | |
61 | const EVP_PKEY_ASN1_METHOD *t = &tmp, **ret; | |
12a765a5 | 62 | |
0f113f3e MC |
63 | tmp.pkey_id = type; |
64 | if (app_methods) { | |
65 | int idx; | |
66 | idx = sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp); | |
67 | if (idx >= 0) | |
68 | return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx); | |
69 | } | |
b6eb9827 | 70 | ret = OBJ_bsearch_ameth(&t, standard_methods, OSSL_NELEM(standard_methods)); |
12a765a5 | 71 | if (ret == NULL || *ret == NULL) |
0f113f3e MC |
72 | return NULL; |
73 | return *ret; | |
74 | } | |
75 | ||
76 | /* | |
77 | * Find an implementation of an ASN1 algorithm. If 'pe' is not NULL also | |
78 | * search through engines and set *pe to a functional reference to the engine | |
79 | * implementing 'type' or NULL if no engine implements it. | |
01b8b3c7 DSH |
80 | */ |
81 | ||
82 | const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type) | |
0f113f3e MC |
83 | { |
84 | const EVP_PKEY_ASN1_METHOD *t; | |
85 | ||
86 | for (;;) { | |
87 | t = pkey_asn1_find(type); | |
88 | if (!t || !(t->pkey_flags & ASN1_PKEY_ALIAS)) | |
89 | break; | |
90 | type = t->pkey_base_id; | |
91 | } | |
92 | if (pe) { | |
01b8b3c7 | 93 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e MC |
94 | ENGINE *e; |
95 | /* type will contain the final unaliased type */ | |
96 | e = ENGINE_get_pkey_asn1_meth_engine(type); | |
97 | if (e) { | |
98 | *pe = e; | |
99 | return ENGINE_get_pkey_asn1_meth(e, type); | |
100 | } | |
01b8b3c7 | 101 | #endif |
0f113f3e MC |
102 | *pe = NULL; |
103 | } | |
104 | return t; | |
105 | } | |
01b8b3c7 DSH |
106 | |
107 | const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe, | |
0f113f3e MC |
108 | const char *str, int len) |
109 | { | |
110 | int i; | |
3bf0c3fe RL |
111 | const EVP_PKEY_ASN1_METHOD *ameth = NULL; |
112 | ||
0f113f3e MC |
113 | if (len == -1) |
114 | len = strlen(str); | |
115 | if (pe) { | |
01b8b3c7 | 116 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e MC |
117 | ENGINE *e; |
118 | ameth = ENGINE_pkey_asn1_find_str(&e, str, len); | |
119 | if (ameth) { | |
120 | /* | |
121 | * Convert structural into functional reference | |
122 | */ | |
123 | if (!ENGINE_init(e)) | |
124 | ameth = NULL; | |
125 | ENGINE_free(e); | |
126 | *pe = e; | |
127 | return ameth; | |
128 | } | |
01b8b3c7 | 129 | #endif |
0f113f3e MC |
130 | *pe = NULL; |
131 | } | |
3bf0c3fe | 132 | for (i = EVP_PKEY_asn1_get_count(); i-- > 0; ) { |
0f113f3e MC |
133 | ameth = EVP_PKEY_asn1_get0(i); |
134 | if (ameth->pkey_flags & ASN1_PKEY_ALIAS) | |
135 | continue; | |
3bf0c3fe RL |
136 | if ((int)strlen(ameth->pem_str) == len |
137 | && strncasecmp(ameth->pem_str, str, len) == 0) | |
0f113f3e MC |
138 | return ameth; |
139 | } | |
140 | return NULL; | |
141 | } | |
e4263314 | 142 | |
e46691a0 | 143 | int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth) |
0f113f3e | 144 | { |
3bf0c3fe RL |
145 | EVP_PKEY_ASN1_METHOD tmp = { 0, }; |
146 | ||
a8600316 RL |
147 | /* |
148 | * One of the following must be true: | |
149 | * | |
150 | * pem_str == NULL AND ASN1_PKEY_ALIAS is set | |
151 | * pem_str != NULL AND ASN1_PKEY_ALIAS is clear | |
152 | * | |
153 | * Anything else is an error and may lead to a corrupt ASN1 method table | |
154 | */ | |
155 | if (!((ameth->pem_str == NULL | |
156 | && (ameth->pkey_flags & ASN1_PKEY_ALIAS) != 0) | |
157 | || (ameth->pem_str != NULL | |
158 | && (ameth->pkey_flags & ASN1_PKEY_ALIAS) == 0))) { | |
159 | EVPerr(EVP_F_EVP_PKEY_ASN1_ADD0, ERR_R_PASSED_INVALID_ARGUMENT); | |
160 | return 0; | |
161 | } | |
162 | ||
0f113f3e MC |
163 | if (app_methods == NULL) { |
164 | app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp); | |
90945fa3 | 165 | if (app_methods == NULL) |
0f113f3e MC |
166 | return 0; |
167 | } | |
3bf0c3fe RL |
168 | |
169 | tmp.pkey_id = ameth->pkey_id; | |
170 | if (sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp) >= 0) { | |
171 | EVPerr(EVP_F_EVP_PKEY_ASN1_ADD0, | |
172 | EVP_R_PKEY_APPLICATION_ASN1_METHOD_ALREADY_REGISTERED); | |
173 | return 0; | |
174 | } | |
175 | ||
0f113f3e MC |
176 | if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods, ameth)) |
177 | return 0; | |
178 | sk_EVP_PKEY_ASN1_METHOD_sort(app_methods); | |
179 | return 1; | |
180 | } | |
18e377b4 | 181 | |
e46691a0 | 182 | int EVP_PKEY_asn1_add_alias(int to, int from) |
0f113f3e MC |
183 | { |
184 | EVP_PKEY_ASN1_METHOD *ameth; | |
185 | ameth = EVP_PKEY_asn1_new(from, ASN1_PKEY_ALIAS, NULL, NULL); | |
90945fa3 | 186 | if (ameth == NULL) |
0f113f3e MC |
187 | return 0; |
188 | ameth->pkey_base_id = to; | |
189 | if (!EVP_PKEY_asn1_add0(ameth)) { | |
190 | EVP_PKEY_asn1_free(ameth); | |
191 | return 0; | |
192 | } | |
193 | return 1; | |
194 | } | |
195 | ||
196 | int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *ppkey_base_id, | |
197 | int *ppkey_flags, const char **pinfo, | |
198 | const char **ppem_str, | |
199 | const EVP_PKEY_ASN1_METHOD *ameth) | |
200 | { | |
201 | if (!ameth) | |
202 | return 0; | |
203 | if (ppkey_id) | |
204 | *ppkey_id = ameth->pkey_id; | |
205 | if (ppkey_base_id) | |
206 | *ppkey_base_id = ameth->pkey_base_id; | |
207 | if (ppkey_flags) | |
208 | *ppkey_flags = ameth->pkey_flags; | |
209 | if (pinfo) | |
210 | *pinfo = ameth->info; | |
211 | if (ppem_str) | |
212 | *ppem_str = ameth->pem_str; | |
213 | return 1; | |
214 | } | |
215 | ||
8900f3e3 | 216 | const EVP_PKEY_ASN1_METHOD *EVP_PKEY_get0_asn1(const EVP_PKEY *pkey) |
0f113f3e MC |
217 | { |
218 | return pkey->ameth; | |
219 | } | |
220 | ||
221 | EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_new(int id, int flags, | |
222 | const char *pem_str, const char *info) | |
223 | { | |
b51bce94 RS |
224 | EVP_PKEY_ASN1_METHOD *ameth = OPENSSL_zalloc(sizeof(*ameth)); |
225 | ||
90945fa3 | 226 | if (ameth == NULL) |
0f113f3e MC |
227 | return NULL; |
228 | ||
0f113f3e MC |
229 | ameth->pkey_id = id; |
230 | ameth->pkey_base_id = id; | |
231 | ameth->pkey_flags = flags | ASN1_PKEY_DYNAMIC; | |
232 | ||
233 | if (info) { | |
7644a9ae | 234 | ameth->info = OPENSSL_strdup(info); |
0f113f3e MC |
235 | if (!ameth->info) |
236 | goto err; | |
64b25758 | 237 | } |
0f113f3e MC |
238 | |
239 | if (pem_str) { | |
7644a9ae | 240 | ameth->pem_str = OPENSSL_strdup(pem_str); |
0f113f3e MC |
241 | if (!ameth->pem_str) |
242 | goto err; | |
64b25758 | 243 | } |
0f113f3e MC |
244 | |
245 | return ameth; | |
246 | ||
247 | err: | |
0f113f3e MC |
248 | EVP_PKEY_asn1_free(ameth); |
249 | return NULL; | |
250 | ||
251 | } | |
252 | ||
253 | void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst, | |
254 | const EVP_PKEY_ASN1_METHOD *src) | |
255 | { | |
472a88b7 MC |
256 | int pkey_id = dst->pkey_id; |
257 | int pkey_base_id = dst->pkey_base_id; | |
258 | unsigned long pkey_flags = dst->pkey_flags; | |
259 | char *pem_str = dst->pem_str; | |
260 | char *info = dst->info; | |
261 | ||
262 | *dst = *src; | |
263 | ||
264 | /* We only copy the function pointers so restore the other values */ | |
265 | dst->pkey_id = pkey_id; | |
266 | dst->pkey_base_id = pkey_base_id; | |
267 | dst->pkey_flags = pkey_flags; | |
268 | dst->pem_str = pem_str; | |
269 | dst->info = info; | |
0f113f3e | 270 | } |
e69adea5 | 271 | |
d82e2718 | 272 | void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth) |
0f113f3e MC |
273 | { |
274 | if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC)) { | |
b548a1f1 RS |
275 | OPENSSL_free(ameth->pem_str); |
276 | OPENSSL_free(ameth->info); | |
0f113f3e MC |
277 | OPENSSL_free(ameth); |
278 | } | |
279 | } | |
18e377b4 DSH |
280 | |
281 | void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth, | |
0f113f3e | 282 | int (*pub_decode) (EVP_PKEY *pk, |
7674e923 | 283 | const X509_PUBKEY *pub), |
0f113f3e MC |
284 | int (*pub_encode) (X509_PUBKEY *pub, |
285 | const EVP_PKEY *pk), | |
286 | int (*pub_cmp) (const EVP_PKEY *a, | |
287 | const EVP_PKEY *b), | |
288 | int (*pub_print) (BIO *out, | |
289 | const EVP_PKEY *pkey, | |
290 | int indent, ASN1_PCTX *pctx), | |
291 | int (*pkey_size) (const EVP_PKEY *pk), | |
292 | int (*pkey_bits) (const EVP_PKEY *pk)) | |
293 | { | |
294 | ameth->pub_decode = pub_decode; | |
295 | ameth->pub_encode = pub_encode; | |
296 | ameth->pub_cmp = pub_cmp; | |
297 | ameth->pub_print = pub_print; | |
298 | ameth->pkey_size = pkey_size; | |
299 | ameth->pkey_bits = pkey_bits; | |
300 | } | |
18e377b4 DSH |
301 | |
302 | void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth, | |
0f113f3e | 303 | int (*priv_decode) (EVP_PKEY *pk, |
245c6bc3 | 304 | const PKCS8_PRIV_KEY_INFO |
0f113f3e MC |
305 | *p8inf), |
306 | int (*priv_encode) (PKCS8_PRIV_KEY_INFO *p8, | |
307 | const EVP_PKEY *pk), | |
308 | int (*priv_print) (BIO *out, | |
309 | const EVP_PKEY *pkey, | |
310 | int indent, | |
311 | ASN1_PCTX *pctx)) | |
312 | { | |
313 | ameth->priv_decode = priv_decode; | |
314 | ameth->priv_encode = priv_encode; | |
315 | ameth->priv_print = priv_print; | |
316 | } | |
18e377b4 DSH |
317 | |
318 | void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth, | |
0f113f3e MC |
319 | int (*param_decode) (EVP_PKEY *pkey, |
320 | const unsigned char **pder, | |
321 | int derlen), | |
322 | int (*param_encode) (const EVP_PKEY *pkey, | |
323 | unsigned char **pder), | |
324 | int (*param_missing) (const EVP_PKEY *pk), | |
325 | int (*param_copy) (EVP_PKEY *to, | |
326 | const EVP_PKEY *from), | |
327 | int (*param_cmp) (const EVP_PKEY *a, | |
328 | const EVP_PKEY *b), | |
329 | int (*param_print) (BIO *out, | |
330 | const EVP_PKEY *pkey, | |
331 | int indent, ASN1_PCTX *pctx)) | |
332 | { | |
333 | ameth->param_decode = param_decode; | |
334 | ameth->param_encode = param_encode; | |
335 | ameth->param_missing = param_missing; | |
336 | ameth->param_copy = param_copy; | |
337 | ameth->param_cmp = param_cmp; | |
338 | ameth->param_print = param_print; | |
339 | } | |
18e377b4 DSH |
340 | |
341 | void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth, | |
0f113f3e MC |
342 | void (*pkey_free) (EVP_PKEY *pkey)) |
343 | { | |
344 | ameth->pkey_free = pkey_free; | |
345 | } | |
18e377b4 DSH |
346 | |
347 | void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth, | |
0f113f3e MC |
348 | int (*pkey_ctrl) (EVP_PKEY *pkey, int op, |
349 | long arg1, void *arg2)) | |
350 | { | |
351 | ameth->pkey_ctrl = pkey_ctrl; | |
352 | } | |
2514fa79 DSH |
353 | |
354 | void EVP_PKEY_asn1_set_security_bits(EVP_PKEY_ASN1_METHOD *ameth, | |
0f113f3e MC |
355 | int (*pkey_security_bits) (const EVP_PKEY |
356 | *pk)) | |
357 | { | |
358 | ameth->pkey_security_bits = pkey_security_bits; | |
359 | } | |
3418f7b7 SA |
360 | |
361 | void EVP_PKEY_asn1_set_item(EVP_PKEY_ASN1_METHOD *ameth, | |
362 | int (*item_verify) (EVP_MD_CTX *ctx, | |
363 | const ASN1_ITEM *it, | |
ded346fa DDO |
364 | const void *data, |
365 | const X509_ALGOR *a, | |
366 | const ASN1_BIT_STRING *sig, | |
3418f7b7 SA |
367 | EVP_PKEY *pkey), |
368 | int (*item_sign) (EVP_MD_CTX *ctx, | |
369 | const ASN1_ITEM *it, | |
ded346fa | 370 | const void *data, |
3418f7b7 SA |
371 | X509_ALGOR *alg1, |
372 | X509_ALGOR *alg2, | |
373 | ASN1_BIT_STRING *sig)) | |
374 | { | |
375 | ameth->item_sign = item_sign; | |
376 | ameth->item_verify = item_verify; | |
377 | } | |
5e006082 RL |
378 | |
379 | void EVP_PKEY_asn1_set_siginf(EVP_PKEY_ASN1_METHOD *ameth, | |
380 | int (*siginf_set) (X509_SIG_INFO *siginf, | |
381 | const X509_ALGOR *alg, | |
382 | const ASN1_STRING *sig)) | |
383 | { | |
384 | ameth->siginf_set = siginf_set; | |
385 | } | |
386 | ||
387 | void EVP_PKEY_asn1_set_check(EVP_PKEY_ASN1_METHOD *ameth, | |
388 | int (*pkey_check) (const EVP_PKEY *pk)) | |
389 | { | |
390 | ameth->pkey_check = pkey_check; | |
391 | } | |
b0004708 PY |
392 | |
393 | void EVP_PKEY_asn1_set_public_check(EVP_PKEY_ASN1_METHOD *ameth, | |
394 | int (*pkey_pub_check) (const EVP_PKEY *pk)) | |
395 | { | |
396 | ameth->pkey_public_check = pkey_pub_check; | |
397 | } | |
398 | ||
399 | void EVP_PKEY_asn1_set_param_check(EVP_PKEY_ASN1_METHOD *ameth, | |
400 | int (*pkey_param_check) (const EVP_PKEY *pk)) | |
401 | { | |
402 | ameth->pkey_param_check = pkey_param_check; | |
403 | } | |
e8f9f08f MC |
404 | |
405 | void EVP_PKEY_asn1_set_set_priv_key(EVP_PKEY_ASN1_METHOD *ameth, | |
406 | int (*set_priv_key) (EVP_PKEY *pk, | |
407 | const unsigned char | |
408 | *priv, | |
409 | size_t len)) | |
410 | { | |
411 | ameth->set_priv_key = set_priv_key; | |
412 | } | |
413 | ||
414 | void EVP_PKEY_asn1_set_set_pub_key(EVP_PKEY_ASN1_METHOD *ameth, | |
415 | int (*set_pub_key) (EVP_PKEY *pk, | |
416 | const unsigned char *pub, | |
417 | size_t len)) | |
418 | { | |
419 | ameth->set_pub_key = set_pub_key; | |
420 | } | |
72ff0a54 MC |
421 | |
422 | void EVP_PKEY_asn1_set_get_priv_key(EVP_PKEY_ASN1_METHOD *ameth, | |
423 | int (*get_priv_key) (const EVP_PKEY *pk, | |
424 | unsigned char *priv, | |
425 | size_t *len)) | |
426 | { | |
427 | ameth->get_priv_key = get_priv_key; | |
428 | } | |
429 | ||
430 | void EVP_PKEY_asn1_set_get_pub_key(EVP_PKEY_ASN1_METHOD *ameth, | |
431 | int (*get_pub_key) (const EVP_PKEY *pk, | |
432 | unsigned char *pub, | |
433 | size_t *len)) | |
434 | { | |
435 | ameth->get_pub_key = get_pub_key; | |
436 | } |