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d3819813 | 1 | /* |
7bf7a6d0 | 2 | * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved. |
d3819813 | 3 | * |
7bf7a6d0 MTL |
4 | * Licensed under the OpenSSL license (the "License"). You may not use |
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 | |
d3819813 MTL |
8 | */ |
9 | ||
10 | #include <stdio.h> | |
7bf7a6d0 | 11 | #include "internal/cryptlib.h" |
d3819813 MTL |
12 | #include <openssl/asn1t.h> |
13 | #include <openssl/x509.h> | |
7bf7a6d0 MTL |
14 | #include <openssl/engine.h> |
15 | #include "internal/asn1_int.h" | |
16 | #include "internal/evp_int.h" | |
d3819813 MTL |
17 | |
18 | /* Keep this sorted in type order !! */ | |
19 | static const EVP_PKEY_ASN1_METHOD *standard_methods[] = { | |
20 | #ifndef OPENSSL_NO_RSA | |
21 | &rsa_asn1_meths[0], | |
22 | &rsa_asn1_meths[1], | |
23 | #endif | |
24 | #ifndef OPENSSL_NO_DH | |
25 | &dh_asn1_meth, | |
26 | #endif | |
27 | #ifndef OPENSSL_NO_DSA | |
28 | &dsa_asn1_meths[0], | |
29 | &dsa_asn1_meths[1], | |
30 | &dsa_asn1_meths[2], | |
31 | &dsa_asn1_meths[3], | |
32 | &dsa_asn1_meths[4], | |
33 | #endif | |
34 | #ifndef OPENSSL_NO_EC | |
35 | &eckey_asn1_meth, | |
36 | #endif | |
37 | &hmac_asn1_meth, | |
f4173af1 | 38 | #ifndef OPENSSL_NO_CMAC |
d3819813 | 39 | &cmac_asn1_meth, |
f4173af1 | 40 | #endif |
d3819813 | 41 | #ifndef OPENSSL_NO_DH |
7bf7a6d0 MTL |
42 | &dhx_asn1_meth, |
43 | #endif | |
44 | #ifndef OPENSSL_NO_EC | |
45 | &ecx25519_asn1_meth | |
d3819813 MTL |
46 | #endif |
47 | }; | |
48 | ||
49 | typedef int sk_cmp_fn_type(const char *const *a, const char *const *b); | |
d3819813 MTL |
50 | static STACK_OF(EVP_PKEY_ASN1_METHOD) *app_methods = NULL; |
51 | ||
52 | #ifdef TEST | |
53 | void main() | |
54 | { | |
55 | int i; | |
7bf7a6d0 | 56 | for (i = 0; i < OSSL_NELEM(standard_methods); i++) |
d3819813 MTL |
57 | fprintf(stderr, "Number %d id=%d (%s)\n", i, |
58 | standard_methods[i]->pkey_id, | |
59 | OBJ_nid2sn(standard_methods[i]->pkey_id)); | |
60 | } | |
61 | #endif | |
62 | ||
63 | DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *, | |
64 | const EVP_PKEY_ASN1_METHOD *, ameth); | |
65 | ||
66 | static int ameth_cmp(const EVP_PKEY_ASN1_METHOD *const *a, | |
67 | const EVP_PKEY_ASN1_METHOD *const *b) | |
68 | { | |
69 | return ((*a)->pkey_id - (*b)->pkey_id); | |
70 | } | |
71 | ||
72 | IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *, | |
73 | const EVP_PKEY_ASN1_METHOD *, ameth); | |
74 | ||
75 | int EVP_PKEY_asn1_get_count(void) | |
76 | { | |
7bf7a6d0 | 77 | int num = OSSL_NELEM(standard_methods); |
d3819813 MTL |
78 | if (app_methods) |
79 | num += sk_EVP_PKEY_ASN1_METHOD_num(app_methods); | |
80 | return num; | |
81 | } | |
82 | ||
83 | const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx) | |
84 | { | |
7bf7a6d0 | 85 | int num = OSSL_NELEM(standard_methods); |
d3819813 MTL |
86 | if (idx < 0) |
87 | return NULL; | |
88 | if (idx < num) | |
89 | return standard_methods[idx]; | |
90 | idx -= num; | |
91 | return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx); | |
92 | } | |
93 | ||
94 | static const EVP_PKEY_ASN1_METHOD *pkey_asn1_find(int type) | |
95 | { | |
96 | EVP_PKEY_ASN1_METHOD tmp; | |
97 | const EVP_PKEY_ASN1_METHOD *t = &tmp, **ret; | |
98 | tmp.pkey_id = type; | |
99 | if (app_methods) { | |
100 | int idx; | |
101 | idx = sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp); | |
102 | if (idx >= 0) | |
103 | return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx); | |
104 | } | |
7bf7a6d0 | 105 | ret = OBJ_bsearch_ameth(&t, standard_methods, OSSL_NELEM(standard_methods)); |
d3819813 MTL |
106 | if (!ret || !*ret) |
107 | return NULL; | |
108 | return *ret; | |
109 | } | |
110 | ||
111 | /* | |
112 | * Find an implementation of an ASN1 algorithm. If 'pe' is not NULL also | |
113 | * search through engines and set *pe to a functional reference to the engine | |
114 | * implementing 'type' or NULL if no engine implements it. | |
115 | */ | |
116 | ||
117 | const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type) | |
118 | { | |
119 | const EVP_PKEY_ASN1_METHOD *t; | |
120 | ||
121 | for (;;) { | |
122 | t = pkey_asn1_find(type); | |
123 | if (!t || !(t->pkey_flags & ASN1_PKEY_ALIAS)) | |
124 | break; | |
125 | type = t->pkey_base_id; | |
126 | } | |
127 | if (pe) { | |
128 | #ifndef OPENSSL_NO_ENGINE | |
129 | ENGINE *e; | |
130 | /* type will contain the final unaliased type */ | |
131 | e = ENGINE_get_pkey_asn1_meth_engine(type); | |
132 | if (e) { | |
133 | *pe = e; | |
134 | return ENGINE_get_pkey_asn1_meth(e, type); | |
135 | } | |
136 | #endif | |
137 | *pe = NULL; | |
138 | } | |
139 | return t; | |
140 | } | |
141 | ||
142 | const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe, | |
143 | const char *str, int len) | |
144 | { | |
145 | int i; | |
146 | const EVP_PKEY_ASN1_METHOD *ameth; | |
147 | if (len == -1) | |
148 | len = strlen(str); | |
149 | if (pe) { | |
150 | #ifndef OPENSSL_NO_ENGINE | |
151 | ENGINE *e; | |
152 | ameth = ENGINE_pkey_asn1_find_str(&e, str, len); | |
153 | if (ameth) { | |
154 | /* | |
155 | * Convert structural into functional reference | |
156 | */ | |
157 | if (!ENGINE_init(e)) | |
158 | ameth = NULL; | |
159 | ENGINE_free(e); | |
160 | *pe = e; | |
161 | return ameth; | |
162 | } | |
163 | #endif | |
164 | *pe = NULL; | |
165 | } | |
166 | for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) { | |
167 | ameth = EVP_PKEY_asn1_get0(i); | |
168 | if (ameth->pkey_flags & ASN1_PKEY_ALIAS) | |
169 | continue; | |
7bf7a6d0 MTL |
170 | if (((int)strlen(ameth->pem_str) == len) |
171 | && (strncasecmp(ameth->pem_str, str, len) == 0)) | |
d3819813 MTL |
172 | return ameth; |
173 | } | |
174 | return NULL; | |
175 | } | |
176 | ||
177 | int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth) | |
178 | { | |
179 | if (app_methods == NULL) { | |
180 | app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp); | |
7bf7a6d0 | 181 | if (app_methods == NULL) |
d3819813 MTL |
182 | return 0; |
183 | } | |
184 | if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods, ameth)) | |
185 | return 0; | |
186 | sk_EVP_PKEY_ASN1_METHOD_sort(app_methods); | |
187 | return 1; | |
188 | } | |
189 | ||
190 | int EVP_PKEY_asn1_add_alias(int to, int from) | |
191 | { | |
192 | EVP_PKEY_ASN1_METHOD *ameth; | |
193 | ameth = EVP_PKEY_asn1_new(from, ASN1_PKEY_ALIAS, NULL, NULL); | |
7bf7a6d0 | 194 | if (ameth == NULL) |
d3819813 MTL |
195 | return 0; |
196 | ameth->pkey_base_id = to; | |
197 | if (!EVP_PKEY_asn1_add0(ameth)) { | |
198 | EVP_PKEY_asn1_free(ameth); | |
199 | return 0; | |
200 | } | |
201 | return 1; | |
202 | } | |
203 | ||
204 | int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *ppkey_base_id, | |
205 | int *ppkey_flags, const char **pinfo, | |
206 | const char **ppem_str, | |
207 | const EVP_PKEY_ASN1_METHOD *ameth) | |
208 | { | |
209 | if (!ameth) | |
210 | return 0; | |
211 | if (ppkey_id) | |
212 | *ppkey_id = ameth->pkey_id; | |
213 | if (ppkey_base_id) | |
214 | *ppkey_base_id = ameth->pkey_base_id; | |
215 | if (ppkey_flags) | |
216 | *ppkey_flags = ameth->pkey_flags; | |
217 | if (pinfo) | |
218 | *pinfo = ameth->info; | |
219 | if (ppem_str) | |
220 | *ppem_str = ameth->pem_str; | |
221 | return 1; | |
222 | } | |
223 | ||
7bf7a6d0 | 224 | const EVP_PKEY_ASN1_METHOD *EVP_PKEY_get0_asn1(const EVP_PKEY *pkey) |
d3819813 MTL |
225 | { |
226 | return pkey->ameth; | |
227 | } | |
228 | ||
229 | EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_new(int id, int flags, | |
230 | const char *pem_str, const char *info) | |
231 | { | |
7bf7a6d0 | 232 | EVP_PKEY_ASN1_METHOD *ameth = OPENSSL_zalloc(sizeof(*ameth)); |
d3819813 | 233 | |
7bf7a6d0 MTL |
234 | if (ameth == NULL) |
235 | return NULL; | |
b6f94dbe | 236 | |
d3819813 MTL |
237 | ameth->pkey_id = id; |
238 | ameth->pkey_base_id = id; | |
239 | ameth->pkey_flags = flags | ASN1_PKEY_DYNAMIC; | |
240 | ||
241 | if (info) { | |
7bf7a6d0 | 242 | ameth->info = OPENSSL_strdup(info); |
d3819813 MTL |
243 | if (!ameth->info) |
244 | goto err; | |
7bf7a6d0 | 245 | } |
d3819813 MTL |
246 | |
247 | if (pem_str) { | |
7bf7a6d0 | 248 | ameth->pem_str = OPENSSL_strdup(pem_str); |
d3819813 MTL |
249 | if (!ameth->pem_str) |
250 | goto err; | |
7bf7a6d0 | 251 | } |
d3819813 MTL |
252 | |
253 | return ameth; | |
254 | ||
255 | err: | |
d3819813 MTL |
256 | EVP_PKEY_asn1_free(ameth); |
257 | return NULL; | |
258 | ||
259 | } | |
260 | ||
261 | void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst, | |
262 | const EVP_PKEY_ASN1_METHOD *src) | |
263 | { | |
264 | ||
265 | dst->pub_decode = src->pub_decode; | |
266 | dst->pub_encode = src->pub_encode; | |
267 | dst->pub_cmp = src->pub_cmp; | |
268 | dst->pub_print = src->pub_print; | |
269 | ||
270 | dst->priv_decode = src->priv_decode; | |
271 | dst->priv_encode = src->priv_encode; | |
272 | dst->priv_print = src->priv_print; | |
273 | ||
274 | dst->old_priv_encode = src->old_priv_encode; | |
275 | dst->old_priv_decode = src->old_priv_decode; | |
276 | ||
277 | dst->pkey_size = src->pkey_size; | |
278 | dst->pkey_bits = src->pkey_bits; | |
279 | ||
280 | dst->param_decode = src->param_decode; | |
281 | dst->param_encode = src->param_encode; | |
282 | dst->param_missing = src->param_missing; | |
283 | dst->param_copy = src->param_copy; | |
284 | dst->param_cmp = src->param_cmp; | |
285 | dst->param_print = src->param_print; | |
286 | ||
287 | dst->pkey_free = src->pkey_free; | |
288 | dst->pkey_ctrl = src->pkey_ctrl; | |
289 | ||
290 | dst->item_sign = src->item_sign; | |
291 | dst->item_verify = src->item_verify; | |
292 | ||
293 | } | |
294 | ||
295 | void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth) | |
296 | { | |
297 | if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC)) { | |
7bf7a6d0 MTL |
298 | OPENSSL_free(ameth->pem_str); |
299 | OPENSSL_free(ameth->info); | |
d3819813 MTL |
300 | OPENSSL_free(ameth); |
301 | } | |
302 | } | |
303 | ||
304 | void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth, | |
305 | int (*pub_decode) (EVP_PKEY *pk, | |
306 | X509_PUBKEY *pub), | |
307 | int (*pub_encode) (X509_PUBKEY *pub, | |
308 | const EVP_PKEY *pk), | |
309 | int (*pub_cmp) (const EVP_PKEY *a, | |
310 | const EVP_PKEY *b), | |
311 | int (*pub_print) (BIO *out, | |
312 | const EVP_PKEY *pkey, | |
313 | int indent, ASN1_PCTX *pctx), | |
314 | int (*pkey_size) (const EVP_PKEY *pk), | |
315 | int (*pkey_bits) (const EVP_PKEY *pk)) | |
316 | { | |
317 | ameth->pub_decode = pub_decode; | |
318 | ameth->pub_encode = pub_encode; | |
319 | ameth->pub_cmp = pub_cmp; | |
320 | ameth->pub_print = pub_print; | |
321 | ameth->pkey_size = pkey_size; | |
322 | ameth->pkey_bits = pkey_bits; | |
323 | } | |
324 | ||
325 | void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth, | |
326 | int (*priv_decode) (EVP_PKEY *pk, | |
7bf7a6d0 | 327 | const PKCS8_PRIV_KEY_INFO |
d3819813 MTL |
328 | *p8inf), |
329 | int (*priv_encode) (PKCS8_PRIV_KEY_INFO *p8, | |
330 | const EVP_PKEY *pk), | |
331 | int (*priv_print) (BIO *out, | |
332 | const EVP_PKEY *pkey, | |
333 | int indent, | |
334 | ASN1_PCTX *pctx)) | |
335 | { | |
336 | ameth->priv_decode = priv_decode; | |
337 | ameth->priv_encode = priv_encode; | |
338 | ameth->priv_print = priv_print; | |
339 | } | |
340 | ||
341 | void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth, | |
342 | int (*param_decode) (EVP_PKEY *pkey, | |
343 | const unsigned char **pder, | |
344 | int derlen), | |
345 | int (*param_encode) (const EVP_PKEY *pkey, | |
346 | unsigned char **pder), | |
347 | int (*param_missing) (const EVP_PKEY *pk), | |
348 | int (*param_copy) (EVP_PKEY *to, | |
349 | const EVP_PKEY *from), | |
350 | int (*param_cmp) (const EVP_PKEY *a, | |
351 | const EVP_PKEY *b), | |
352 | int (*param_print) (BIO *out, | |
353 | const EVP_PKEY *pkey, | |
354 | int indent, ASN1_PCTX *pctx)) | |
355 | { | |
356 | ameth->param_decode = param_decode; | |
357 | ameth->param_encode = param_encode; | |
358 | ameth->param_missing = param_missing; | |
359 | ameth->param_copy = param_copy; | |
360 | ameth->param_cmp = param_cmp; | |
361 | ameth->param_print = param_print; | |
362 | } | |
363 | ||
364 | void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth, | |
365 | void (*pkey_free) (EVP_PKEY *pkey)) | |
366 | { | |
367 | ameth->pkey_free = pkey_free; | |
368 | } | |
369 | ||
370 | void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth, | |
371 | int (*pkey_ctrl) (EVP_PKEY *pkey, int op, | |
372 | long arg1, void *arg2)) | |
373 | { | |
374 | ameth->pkey_ctrl = pkey_ctrl; | |
375 | } | |
376 | ||
7bf7a6d0 MTL |
377 | void EVP_PKEY_asn1_set_security_bits(EVP_PKEY_ASN1_METHOD *ameth, |
378 | int (*pkey_security_bits) (const EVP_PKEY | |
379 | *pk)) | |
380 | { | |
381 | ameth->pkey_security_bits = pkey_security_bits; | |
382 | } | |
383 | ||
d3819813 MTL |
384 | void EVP_PKEY_asn1_set_item(EVP_PKEY_ASN1_METHOD *ameth, |
385 | int (*item_verify) (EVP_MD_CTX *ctx, | |
386 | const ASN1_ITEM *it, | |
387 | void *asn, | |
388 | X509_ALGOR *a, | |
389 | ASN1_BIT_STRING *sig, | |
390 | EVP_PKEY *pkey), | |
391 | int (*item_sign) (EVP_MD_CTX *ctx, | |
392 | const ASN1_ITEM *it, | |
393 | void *asn, | |
394 | X509_ALGOR *alg1, | |
395 | X509_ALGOR *alg2, | |
396 | ASN1_BIT_STRING *sig)) | |
397 | { | |
398 | ameth->item_sign = item_sign; | |
399 | ameth->item_verify = item_verify; | |
400 | } |