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Commit | Line | Data |
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0f113f3e | 1 | /* |
6738bf14 | 2 | * Copyright 2006-2018 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 | ||
677963e5 | 10 | #include "e_os.h" /* for strncasecmp */ |
b39fc560 | 11 | #include "internal/cryptlib.h" |
677963e5 | 12 | #include <stdio.h> |
448be743 DSH |
13 | #include <openssl/asn1t.h> |
14 | #include <openssl/x509.h> | |
3c27208f | 15 | #include <openssl/engine.h> |
5fe736e5 | 16 | #include "internal/asn1_int.h" |
3aeb9348 | 17 | #include "internal/evp_int.h" |
448be743 | 18 | |
2c166171 | 19 | #include "standard_methods.h" |
448be743 | 20 | |
0f113f3e | 21 | typedef int sk_cmp_fn_type(const char *const *a, const char *const *b); |
5ce278a7 | 22 | static STACK_OF(EVP_PKEY_ASN1_METHOD) *app_methods = NULL; |
18e377b4 | 23 | |
606f6c47 | 24 | DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *, |
0f113f3e | 25 | const EVP_PKEY_ASN1_METHOD *, ameth); |
babb3798 | 26 | |
0f113f3e MC |
27 | static int ameth_cmp(const EVP_PKEY_ASN1_METHOD *const *a, |
28 | const EVP_PKEY_ASN1_METHOD *const *b) | |
29 | { | |
30 | return ((*a)->pkey_id - (*b)->pkey_id); | |
31 | } | |
448be743 | 32 | |
606f6c47 | 33 | IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *, |
0f113f3e | 34 | const EVP_PKEY_ASN1_METHOD *, ameth); |
babb3798 | 35 | |
e4263314 | 36 | int EVP_PKEY_asn1_get_count(void) |
0f113f3e | 37 | { |
b6eb9827 | 38 | int num = OSSL_NELEM(standard_methods); |
0f113f3e MC |
39 | if (app_methods) |
40 | num += sk_EVP_PKEY_ASN1_METHOD_num(app_methods); | |
41 | return num; | |
42 | } | |
e4263314 DSH |
43 | |
44 | const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx) | |
0f113f3e | 45 | { |
b6eb9827 | 46 | int num = OSSL_NELEM(standard_methods); |
0f113f3e MC |
47 | if (idx < 0) |
48 | return NULL; | |
49 | if (idx < num) | |
50 | return standard_methods[idx]; | |
51 | idx -= num; | |
52 | return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx); | |
53 | } | |
e4263314 | 54 | |
01b8b3c7 | 55 | static const EVP_PKEY_ASN1_METHOD *pkey_asn1_find(int type) |
0f113f3e MC |
56 | { |
57 | EVP_PKEY_ASN1_METHOD tmp; | |
58 | const EVP_PKEY_ASN1_METHOD *t = &tmp, **ret; | |
59 | tmp.pkey_id = type; | |
60 | if (app_methods) { | |
61 | int idx; | |
62 | idx = sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp); | |
63 | if (idx >= 0) | |
64 | return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx); | |
65 | } | |
b6eb9827 | 66 | ret = OBJ_bsearch_ameth(&t, standard_methods, OSSL_NELEM(standard_methods)); |
0f113f3e MC |
67 | if (!ret || !*ret) |
68 | return NULL; | |
69 | return *ret; | |
70 | } | |
71 | ||
72 | /* | |
73 | * Find an implementation of an ASN1 algorithm. If 'pe' is not NULL also | |
74 | * search through engines and set *pe to a functional reference to the engine | |
75 | * implementing 'type' or NULL if no engine implements it. | |
01b8b3c7 DSH |
76 | */ |
77 | ||
78 | const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type) | |
0f113f3e MC |
79 | { |
80 | const EVP_PKEY_ASN1_METHOD *t; | |
81 | ||
82 | for (;;) { | |
83 | t = pkey_asn1_find(type); | |
84 | if (!t || !(t->pkey_flags & ASN1_PKEY_ALIAS)) | |
85 | break; | |
86 | type = t->pkey_base_id; | |
87 | } | |
88 | if (pe) { | |
01b8b3c7 | 89 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e MC |
90 | ENGINE *e; |
91 | /* type will contain the final unaliased type */ | |
92 | e = ENGINE_get_pkey_asn1_meth_engine(type); | |
93 | if (e) { | |
94 | *pe = e; | |
95 | return ENGINE_get_pkey_asn1_meth(e, type); | |
96 | } | |
01b8b3c7 | 97 | #endif |
0f113f3e MC |
98 | *pe = NULL; |
99 | } | |
100 | return t; | |
101 | } | |
01b8b3c7 DSH |
102 | |
103 | const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe, | |
0f113f3e MC |
104 | const char *str, int len) |
105 | { | |
106 | int i; | |
3bf0c3fe RL |
107 | const EVP_PKEY_ASN1_METHOD *ameth = NULL; |
108 | ||
0f113f3e MC |
109 | if (len == -1) |
110 | len = strlen(str); | |
111 | if (pe) { | |
01b8b3c7 | 112 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e MC |
113 | ENGINE *e; |
114 | ameth = ENGINE_pkey_asn1_find_str(&e, str, len); | |
115 | if (ameth) { | |
116 | /* | |
117 | * Convert structural into functional reference | |
118 | */ | |
119 | if (!ENGINE_init(e)) | |
120 | ameth = NULL; | |
121 | ENGINE_free(e); | |
122 | *pe = e; | |
123 | return ameth; | |
124 | } | |
01b8b3c7 | 125 | #endif |
0f113f3e MC |
126 | *pe = NULL; |
127 | } | |
3bf0c3fe | 128 | for (i = EVP_PKEY_asn1_get_count(); i-- > 0; ) { |
0f113f3e MC |
129 | ameth = EVP_PKEY_asn1_get0(i); |
130 | if (ameth->pkey_flags & ASN1_PKEY_ALIAS) | |
131 | continue; | |
3bf0c3fe RL |
132 | if ((int)strlen(ameth->pem_str) == len |
133 | && strncasecmp(ameth->pem_str, str, len) == 0) | |
0f113f3e MC |
134 | return ameth; |
135 | } | |
136 | return NULL; | |
137 | } | |
e4263314 | 138 | |
e46691a0 | 139 | int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth) |
0f113f3e | 140 | { |
3bf0c3fe RL |
141 | EVP_PKEY_ASN1_METHOD tmp = { 0, }; |
142 | ||
0f113f3e MC |
143 | if (app_methods == NULL) { |
144 | app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp); | |
90945fa3 | 145 | if (app_methods == NULL) |
0f113f3e MC |
146 | return 0; |
147 | } | |
3bf0c3fe RL |
148 | |
149 | tmp.pkey_id = ameth->pkey_id; | |
150 | if (sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp) >= 0) { | |
151 | EVPerr(EVP_F_EVP_PKEY_ASN1_ADD0, | |
152 | EVP_R_PKEY_APPLICATION_ASN1_METHOD_ALREADY_REGISTERED); | |
153 | return 0; | |
154 | } | |
155 | ||
0f113f3e MC |
156 | if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods, ameth)) |
157 | return 0; | |
158 | sk_EVP_PKEY_ASN1_METHOD_sort(app_methods); | |
159 | return 1; | |
160 | } | |
18e377b4 | 161 | |
e46691a0 | 162 | int EVP_PKEY_asn1_add_alias(int to, int from) |
0f113f3e MC |
163 | { |
164 | EVP_PKEY_ASN1_METHOD *ameth; | |
165 | ameth = EVP_PKEY_asn1_new(from, ASN1_PKEY_ALIAS, NULL, NULL); | |
90945fa3 | 166 | if (ameth == NULL) |
0f113f3e MC |
167 | return 0; |
168 | ameth->pkey_base_id = to; | |
169 | if (!EVP_PKEY_asn1_add0(ameth)) { | |
170 | EVP_PKEY_asn1_free(ameth); | |
171 | return 0; | |
172 | } | |
173 | return 1; | |
174 | } | |
175 | ||
176 | int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *ppkey_base_id, | |
177 | int *ppkey_flags, const char **pinfo, | |
178 | const char **ppem_str, | |
179 | const EVP_PKEY_ASN1_METHOD *ameth) | |
180 | { | |
181 | if (!ameth) | |
182 | return 0; | |
183 | if (ppkey_id) | |
184 | *ppkey_id = ameth->pkey_id; | |
185 | if (ppkey_base_id) | |
186 | *ppkey_base_id = ameth->pkey_base_id; | |
187 | if (ppkey_flags) | |
188 | *ppkey_flags = ameth->pkey_flags; | |
189 | if (pinfo) | |
190 | *pinfo = ameth->info; | |
191 | if (ppem_str) | |
192 | *ppem_str = ameth->pem_str; | |
193 | return 1; | |
194 | } | |
195 | ||
8900f3e3 | 196 | const EVP_PKEY_ASN1_METHOD *EVP_PKEY_get0_asn1(const EVP_PKEY *pkey) |
0f113f3e MC |
197 | { |
198 | return pkey->ameth; | |
199 | } | |
200 | ||
201 | EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_new(int id, int flags, | |
202 | const char *pem_str, const char *info) | |
203 | { | |
b51bce94 RS |
204 | EVP_PKEY_ASN1_METHOD *ameth = OPENSSL_zalloc(sizeof(*ameth)); |
205 | ||
90945fa3 | 206 | if (ameth == NULL) |
0f113f3e MC |
207 | return NULL; |
208 | ||
0f113f3e MC |
209 | ameth->pkey_id = id; |
210 | ameth->pkey_base_id = id; | |
211 | ameth->pkey_flags = flags | ASN1_PKEY_DYNAMIC; | |
212 | ||
213 | if (info) { | |
7644a9ae | 214 | ameth->info = OPENSSL_strdup(info); |
0f113f3e MC |
215 | if (!ameth->info) |
216 | goto err; | |
64b25758 | 217 | } |
0f113f3e | 218 | |
38eca7fe RL |
219 | /* |
220 | * One of the following must be true: | |
221 | * | |
222 | * pem_str == NULL AND ASN1_PKEY_ALIAS is set | |
223 | * pem_str != NULL AND ASN1_PKEY_ALIAS is clear | |
224 | * | |
225 | * Anything else is an error and may lead to a corrupt ASN1 method table | |
226 | */ | |
227 | if (!((pem_str == NULL && (flags & ASN1_PKEY_ALIAS) != 0) | |
228 | || (pem_str != NULL && (flags & ASN1_PKEY_ALIAS) == 0))) | |
229 | goto err; | |
230 | ||
0f113f3e | 231 | if (pem_str) { |
7644a9ae | 232 | ameth->pem_str = OPENSSL_strdup(pem_str); |
0f113f3e MC |
233 | if (!ameth->pem_str) |
234 | goto err; | |
64b25758 | 235 | } |
0f113f3e MC |
236 | |
237 | return ameth; | |
238 | ||
239 | err: | |
0f113f3e MC |
240 | EVP_PKEY_asn1_free(ameth); |
241 | return NULL; | |
242 | ||
243 | } | |
244 | ||
245 | void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst, | |
246 | const EVP_PKEY_ASN1_METHOD *src) | |
247 | { | |
248 | ||
249 | dst->pub_decode = src->pub_decode; | |
250 | dst->pub_encode = src->pub_encode; | |
251 | dst->pub_cmp = src->pub_cmp; | |
252 | dst->pub_print = src->pub_print; | |
253 | ||
254 | dst->priv_decode = src->priv_decode; | |
255 | dst->priv_encode = src->priv_encode; | |
256 | dst->priv_print = src->priv_print; | |
257 | ||
258 | dst->old_priv_encode = src->old_priv_encode; | |
259 | dst->old_priv_decode = src->old_priv_decode; | |
260 | ||
261 | dst->pkey_size = src->pkey_size; | |
262 | dst->pkey_bits = src->pkey_bits; | |
263 | ||
264 | dst->param_decode = src->param_decode; | |
265 | dst->param_encode = src->param_encode; | |
266 | dst->param_missing = src->param_missing; | |
267 | dst->param_copy = src->param_copy; | |
268 | dst->param_cmp = src->param_cmp; | |
269 | dst->param_print = src->param_print; | |
e69adea5 | 270 | |
0f113f3e MC |
271 | dst->pkey_free = src->pkey_free; |
272 | dst->pkey_ctrl = src->pkey_ctrl; | |
e69adea5 | 273 | |
0f113f3e MC |
274 | dst->item_sign = src->item_sign; |
275 | dst->item_verify = src->item_verify; | |
3231e42d | 276 | |
5e006082 RL |
277 | dst->siginf_set = src->siginf_set; |
278 | ||
279 | dst->pkey_check = src->pkey_check; | |
280 | ||
0f113f3e | 281 | } |
e69adea5 | 282 | |
d82e2718 | 283 | void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth) |
0f113f3e MC |
284 | { |
285 | if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC)) { | |
b548a1f1 RS |
286 | OPENSSL_free(ameth->pem_str); |
287 | OPENSSL_free(ameth->info); | |
0f113f3e MC |
288 | OPENSSL_free(ameth); |
289 | } | |
290 | } | |
18e377b4 DSH |
291 | |
292 | void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth, | |
0f113f3e MC |
293 | int (*pub_decode) (EVP_PKEY *pk, |
294 | X509_PUBKEY *pub), | |
295 | int (*pub_encode) (X509_PUBKEY *pub, | |
296 | const EVP_PKEY *pk), | |
297 | int (*pub_cmp) (const EVP_PKEY *a, | |
298 | const EVP_PKEY *b), | |
299 | int (*pub_print) (BIO *out, | |
300 | const EVP_PKEY *pkey, | |
301 | int indent, ASN1_PCTX *pctx), | |
302 | int (*pkey_size) (const EVP_PKEY *pk), | |
303 | int (*pkey_bits) (const EVP_PKEY *pk)) | |
304 | { | |
305 | ameth->pub_decode = pub_decode; | |
306 | ameth->pub_encode = pub_encode; | |
307 | ameth->pub_cmp = pub_cmp; | |
308 | ameth->pub_print = pub_print; | |
309 | ameth->pkey_size = pkey_size; | |
310 | ameth->pkey_bits = pkey_bits; | |
311 | } | |
18e377b4 DSH |
312 | |
313 | void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth, | |
0f113f3e | 314 | int (*priv_decode) (EVP_PKEY *pk, |
245c6bc3 | 315 | const PKCS8_PRIV_KEY_INFO |
0f113f3e MC |
316 | *p8inf), |
317 | int (*priv_encode) (PKCS8_PRIV_KEY_INFO *p8, | |
318 | const EVP_PKEY *pk), | |
319 | int (*priv_print) (BIO *out, | |
320 | const EVP_PKEY *pkey, | |
321 | int indent, | |
322 | ASN1_PCTX *pctx)) | |
323 | { | |
324 | ameth->priv_decode = priv_decode; | |
325 | ameth->priv_encode = priv_encode; | |
326 | ameth->priv_print = priv_print; | |
327 | } | |
18e377b4 DSH |
328 | |
329 | void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth, | |
0f113f3e MC |
330 | int (*param_decode) (EVP_PKEY *pkey, |
331 | const unsigned char **pder, | |
332 | int derlen), | |
333 | int (*param_encode) (const EVP_PKEY *pkey, | |
334 | unsigned char **pder), | |
335 | int (*param_missing) (const EVP_PKEY *pk), | |
336 | int (*param_copy) (EVP_PKEY *to, | |
337 | const EVP_PKEY *from), | |
338 | int (*param_cmp) (const EVP_PKEY *a, | |
339 | const EVP_PKEY *b), | |
340 | int (*param_print) (BIO *out, | |
341 | const EVP_PKEY *pkey, | |
342 | int indent, ASN1_PCTX *pctx)) | |
343 | { | |
344 | ameth->param_decode = param_decode; | |
345 | ameth->param_encode = param_encode; | |
346 | ameth->param_missing = param_missing; | |
347 | ameth->param_copy = param_copy; | |
348 | ameth->param_cmp = param_cmp; | |
349 | ameth->param_print = param_print; | |
350 | } | |
18e377b4 DSH |
351 | |
352 | void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth, | |
0f113f3e MC |
353 | void (*pkey_free) (EVP_PKEY *pkey)) |
354 | { | |
355 | ameth->pkey_free = pkey_free; | |
356 | } | |
18e377b4 DSH |
357 | |
358 | void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth, | |
0f113f3e MC |
359 | int (*pkey_ctrl) (EVP_PKEY *pkey, int op, |
360 | long arg1, void *arg2)) | |
361 | { | |
362 | ameth->pkey_ctrl = pkey_ctrl; | |
363 | } | |
2514fa79 DSH |
364 | |
365 | void EVP_PKEY_asn1_set_security_bits(EVP_PKEY_ASN1_METHOD *ameth, | |
0f113f3e MC |
366 | int (*pkey_security_bits) (const EVP_PKEY |
367 | *pk)) | |
368 | { | |
369 | ameth->pkey_security_bits = pkey_security_bits; | |
370 | } | |
3418f7b7 SA |
371 | |
372 | void EVP_PKEY_asn1_set_item(EVP_PKEY_ASN1_METHOD *ameth, | |
373 | int (*item_verify) (EVP_MD_CTX *ctx, | |
374 | const ASN1_ITEM *it, | |
375 | void *asn, | |
376 | X509_ALGOR *a, | |
377 | ASN1_BIT_STRING *sig, | |
378 | EVP_PKEY *pkey), | |
379 | int (*item_sign) (EVP_MD_CTX *ctx, | |
380 | const ASN1_ITEM *it, | |
381 | void *asn, | |
382 | X509_ALGOR *alg1, | |
383 | X509_ALGOR *alg2, | |
384 | ASN1_BIT_STRING *sig)) | |
385 | { | |
386 | ameth->item_sign = item_sign; | |
387 | ameth->item_verify = item_verify; | |
388 | } | |
5e006082 RL |
389 | |
390 | void EVP_PKEY_asn1_set_siginf(EVP_PKEY_ASN1_METHOD *ameth, | |
391 | int (*siginf_set) (X509_SIG_INFO *siginf, | |
392 | const X509_ALGOR *alg, | |
393 | const ASN1_STRING *sig)) | |
394 | { | |
395 | ameth->siginf_set = siginf_set; | |
396 | } | |
397 | ||
398 | void EVP_PKEY_asn1_set_check(EVP_PKEY_ASN1_METHOD *ameth, | |
399 | int (*pkey_check) (const EVP_PKEY *pk)) | |
400 | { | |
401 | ameth->pkey_check = pkey_check; | |
402 | } | |
b0004708 PY |
403 | |
404 | void EVP_PKEY_asn1_set_public_check(EVP_PKEY_ASN1_METHOD *ameth, | |
405 | int (*pkey_pub_check) (const EVP_PKEY *pk)) | |
406 | { | |
407 | ameth->pkey_public_check = pkey_pub_check; | |
408 | } | |
409 | ||
410 | void EVP_PKEY_asn1_set_param_check(EVP_PKEY_ASN1_METHOD *ameth, | |
411 | int (*pkey_param_check) (const EVP_PKEY *pk)) | |
412 | { | |
413 | ameth->pkey_param_check = pkey_param_check; | |
414 | } | |
e8f9f08f MC |
415 | |
416 | void EVP_PKEY_asn1_set_set_priv_key(EVP_PKEY_ASN1_METHOD *ameth, | |
417 | int (*set_priv_key) (EVP_PKEY *pk, | |
418 | const unsigned char | |
419 | *priv, | |
420 | size_t len)) | |
421 | { | |
422 | ameth->set_priv_key = set_priv_key; | |
423 | } | |
424 | ||
425 | void EVP_PKEY_asn1_set_set_pub_key(EVP_PKEY_ASN1_METHOD *ameth, | |
426 | int (*set_pub_key) (EVP_PKEY *pk, | |
427 | const unsigned char *pub, | |
428 | size_t len)) | |
429 | { | |
430 | ameth->set_pub_key = set_pub_key; | |
431 | } | |
72ff0a54 MC |
432 | |
433 | void EVP_PKEY_asn1_set_get_priv_key(EVP_PKEY_ASN1_METHOD *ameth, | |
434 | int (*get_priv_key) (const EVP_PKEY *pk, | |
435 | unsigned char *priv, | |
436 | size_t *len)) | |
437 | { | |
438 | ameth->get_priv_key = get_priv_key; | |
439 | } | |
440 | ||
441 | void EVP_PKEY_asn1_set_get_pub_key(EVP_PKEY_ASN1_METHOD *ameth, | |
442 | int (*get_pub_key) (const EVP_PKEY *pk, | |
443 | unsigned char *pub, | |
444 | size_t *len)) | |
445 | { | |
446 | ameth->get_pub_key = get_pub_key; | |
447 | } |