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source: vbox/trunk/src/libs/openssl-1.1.1j/crypto/asn1/ameth_lib.c@ 88461

Last change on this file since 88461 was 87984, checked in by vboxsync, 4 years ago

openssl-1.1.1j: Applied and adjusted our OpenSSL changes to 1.1.1j. bugref:9963
File size: 14.5 KB
Line 
1/*
2 * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
3 *
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
8 */
9
10#include "e_os.h" /* for strncasecmp */
11#include "internal/cryptlib.h"
12#include <stdio.h>
13#include <openssl/asn1t.h>
14#include <openssl/x509.h>
15#include <openssl/engine.h>
16#include "crypto/asn1.h"
17#include "crypto/evp.h"
18
19#include "standard_methods.h"
20
21typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
22static STACK_OF(EVP_PKEY_ASN1_METHOD) *app_methods = NULL;
23
24DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
25 const EVP_PKEY_ASN1_METHOD *, ameth);
26
27static 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}
32
33IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
34 const EVP_PKEY_ASN1_METHOD *, ameth);
35
36int EVP_PKEY_asn1_get_count(void)
37{
38 int num = OSSL_NELEM(standard_methods);
39 if (app_methods)
40 num += sk_EVP_PKEY_ASN1_METHOD_num(app_methods);
41 return num;
42}
43
44const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx)
45{
46 int num = OSSL_NELEM(standard_methods);
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}
54
55static const EVP_PKEY_ASN1_METHOD *pkey_asn1_find(int type)
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 }
66 ret = OBJ_bsearch_ameth(&t, standard_methods, OSSL_NELEM(standard_methods));
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.
76 */
77
78const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type)
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) {
89#ifndef OPENSSL_NO_ENGINE
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 }
97#endif
98 *pe = NULL;
99 }
100 return t;
101}
102
103const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe,
104 const char *str, int len)
105{
106 int i;
107 const EVP_PKEY_ASN1_METHOD *ameth = NULL;
108
109 if (len == -1)
110 len = strlen(str);
111 if (pe) {
112#ifndef OPENSSL_NO_ENGINE
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 }
125#endif
126 *pe = NULL;
127 }
128 for (i = EVP_PKEY_asn1_get_count(); i-- > 0; ) {
129 ameth = EVP_PKEY_asn1_get0(i);
130 if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
131 continue;
132 if ((int)strlen(ameth->pem_str) == len
133 && strncasecmp(ameth->pem_str, str, len) == 0)
134 return ameth;
135 }
136 return NULL;
137}
138
139int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth)
140{
141 EVP_PKEY_ASN1_METHOD tmp = { 0, };
142
143 /*
144 * One of the following must be true:
145 *
146 * pem_str == NULL AND ASN1_PKEY_ALIAS is set
147 * pem_str != NULL AND ASN1_PKEY_ALIAS is clear
148 *
149 * Anything else is an error and may lead to a corrupt ASN1 method table
150 */
151 if (!((ameth->pem_str == NULL
152 && (ameth->pkey_flags & ASN1_PKEY_ALIAS) != 0)
153 || (ameth->pem_str != NULL
154 && (ameth->pkey_flags & ASN1_PKEY_ALIAS) == 0))) {
155 EVPerr(EVP_F_EVP_PKEY_ASN1_ADD0, ERR_R_PASSED_INVALID_ARGUMENT);
156 return 0;
157 }
158
159 if (app_methods == NULL) {
160 app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp);
161 if (app_methods == NULL)
162 return 0;
163 }
164
165 tmp.pkey_id = ameth->pkey_id;
166 if (sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp) >= 0) {
167 EVPerr(EVP_F_EVP_PKEY_ASN1_ADD0,
168 EVP_R_PKEY_APPLICATION_ASN1_METHOD_ALREADY_REGISTERED);
169 return 0;
170 }
171
172 if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods, ameth))
173 return 0;
174 sk_EVP_PKEY_ASN1_METHOD_sort(app_methods);
175 return 1;
176}
177
178int EVP_PKEY_asn1_add_alias(int to, int from)
179{
180 EVP_PKEY_ASN1_METHOD *ameth;
181 ameth = EVP_PKEY_asn1_new(from, ASN1_PKEY_ALIAS, NULL, NULL);
182 if (ameth == NULL)
183 return 0;
184 ameth->pkey_base_id = to;
185 if (!EVP_PKEY_asn1_add0(ameth)) {
186 EVP_PKEY_asn1_free(ameth);
187 return 0;
188 }
189 return 1;
190}
191
192int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *ppkey_base_id,
193 int *ppkey_flags, const char **pinfo,
194 const char **ppem_str,
195 const EVP_PKEY_ASN1_METHOD *ameth)
196{
197 if (!ameth)
198 return 0;
199 if (ppkey_id)
200 *ppkey_id = ameth->pkey_id;
201 if (ppkey_base_id)
202 *ppkey_base_id = ameth->pkey_base_id;
203 if (ppkey_flags)
204 *ppkey_flags = ameth->pkey_flags;
205 if (pinfo)
206 *pinfo = ameth->info;
207 if (ppem_str)
208 *ppem_str = ameth->pem_str;
209 return 1;
210}
211
212const EVP_PKEY_ASN1_METHOD *EVP_PKEY_get0_asn1(const EVP_PKEY *pkey)
213{
214 return pkey->ameth;
215}
216
217EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_new(int id, int flags,
218 const char *pem_str, const char *info)
219{
220 EVP_PKEY_ASN1_METHOD *ameth = OPENSSL_zalloc(sizeof(*ameth));
221
222 if (ameth == NULL)
223 return NULL;
224
225 ameth->pkey_id = id;
226 ameth->pkey_base_id = id;
227 ameth->pkey_flags = flags | ASN1_PKEY_DYNAMIC;
228
229 if (info) {
230 ameth->info = OPENSSL_strdup(info);
231 if (!ameth->info)
232 goto err;
233 }
234
235 if (pem_str) {
236 ameth->pem_str = OPENSSL_strdup(pem_str);
237 if (!ameth->pem_str)
238 goto err;
239 }
240
241 return ameth;
242
243 err:
244 EVP_PKEY_asn1_free(ameth);
245 return NULL;
246
247}
248
249void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst,
250 const EVP_PKEY_ASN1_METHOD *src)
251{
252
253 dst->pub_decode = src->pub_decode;
254 dst->pub_encode = src->pub_encode;
255 dst->pub_cmp = src->pub_cmp;
256 dst->pub_print = src->pub_print;
257
258 dst->priv_decode = src->priv_decode;
259 dst->priv_encode = src->priv_encode;
260 dst->priv_print = src->priv_print;
261
262 dst->old_priv_encode = src->old_priv_encode;
263 dst->old_priv_decode = src->old_priv_decode;
264
265 dst->pkey_size = src->pkey_size;
266 dst->pkey_bits = src->pkey_bits;
267
268 dst->param_decode = src->param_decode;
269 dst->param_encode = src->param_encode;
270 dst->param_missing = src->param_missing;
271 dst->param_copy = src->param_copy;
272 dst->param_cmp = src->param_cmp;
273 dst->param_print = src->param_print;
274
275 dst->pkey_free = src->pkey_free;
276 dst->pkey_ctrl = src->pkey_ctrl;
277
278 dst->item_sign = src->item_sign;
279 dst->item_verify = src->item_verify;
280
281 dst->siginf_set = src->siginf_set;
282
283 dst->pkey_check = src->pkey_check;
284
285}
286
287void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth)
288{
289 if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC)) {
290 OPENSSL_free(ameth->pem_str);
291 OPENSSL_free(ameth->info);
292 OPENSSL_free(ameth);
293 }
294}
295
296void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth,
297 int (*pub_decode) (EVP_PKEY *pk,
298 X509_PUBKEY *pub),
299 int (*pub_encode) (X509_PUBKEY *pub,
300 const EVP_PKEY *pk),
301 int (*pub_cmp) (const EVP_PKEY *a,
302 const EVP_PKEY *b),
303 int (*pub_print) (BIO *out,
304 const EVP_PKEY *pkey,
305 int indent, ASN1_PCTX *pctx),
306 int (*pkey_size) (const EVP_PKEY *pk),
307 int (*pkey_bits) (const EVP_PKEY *pk))
308{
309 ameth->pub_decode = pub_decode;
310 ameth->pub_encode = pub_encode;
311 ameth->pub_cmp = pub_cmp;
312 ameth->pub_print = pub_print;
313 ameth->pkey_size = pkey_size;
314 ameth->pkey_bits = pkey_bits;
315}
316
317void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth,
318 int (*priv_decode) (EVP_PKEY *pk,
319 const PKCS8_PRIV_KEY_INFO
320 *p8inf),
321 int (*priv_encode) (PKCS8_PRIV_KEY_INFO *p8,
322 const EVP_PKEY *pk),
323 int (*priv_print) (BIO *out,
324 const EVP_PKEY *pkey,
325 int indent,
326 ASN1_PCTX *pctx))
327{
328 ameth->priv_decode = priv_decode;
329 ameth->priv_encode = priv_encode;
330 ameth->priv_print = priv_print;
331}
332
333void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth,
334 int (*param_decode) (EVP_PKEY *pkey,
335 const unsigned char **pder,
336 int derlen),
337 int (*param_encode) (const EVP_PKEY *pkey,
338 unsigned char **pder),
339 int (*param_missing) (const EVP_PKEY *pk),
340 int (*param_copy) (EVP_PKEY *to,
341 const EVP_PKEY *from),
342 int (*param_cmp) (const EVP_PKEY *a,
343 const EVP_PKEY *b),
344 int (*param_print) (BIO *out,
345 const EVP_PKEY *pkey,
346 int indent, ASN1_PCTX *pctx))
347{
348 ameth->param_decode = param_decode;
349 ameth->param_encode = param_encode;
350 ameth->param_missing = param_missing;
351 ameth->param_copy = param_copy;
352 ameth->param_cmp = param_cmp;
353 ameth->param_print = param_print;
354}
355
356void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth,
357 void (*pkey_free) (EVP_PKEY *pkey))
358{
359 ameth->pkey_free = pkey_free;
360}
361
362void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
363 int (*pkey_ctrl) (EVP_PKEY *pkey, int op,
364 long arg1, void *arg2))
365{
366 ameth->pkey_ctrl = pkey_ctrl;
367}
368
369void EVP_PKEY_asn1_set_security_bits(EVP_PKEY_ASN1_METHOD *ameth,
370 int (*pkey_security_bits) (const EVP_PKEY
371 *pk))
372{
373 ameth->pkey_security_bits = pkey_security_bits;
374}
375
376void EVP_PKEY_asn1_set_item(EVP_PKEY_ASN1_METHOD *ameth,
377 int (*item_verify) (EVP_MD_CTX *ctx,
378 const ASN1_ITEM *it,
379 void *asn,
380 X509_ALGOR *a,
381 ASN1_BIT_STRING *sig,
382 EVP_PKEY *pkey),
383 int (*item_sign) (EVP_MD_CTX *ctx,
384 const ASN1_ITEM *it,
385 void *asn,
386 X509_ALGOR *alg1,
387 X509_ALGOR *alg2,
388 ASN1_BIT_STRING *sig))
389{
390 ameth->item_sign = item_sign;
391 ameth->item_verify = item_verify;
392}
393
394void EVP_PKEY_asn1_set_siginf(EVP_PKEY_ASN1_METHOD *ameth,
395 int (*siginf_set) (X509_SIG_INFO *siginf,
396 const X509_ALGOR *alg,
397 const ASN1_STRING *sig))
398{
399 ameth->siginf_set = siginf_set;
400}
401
402void EVP_PKEY_asn1_set_check(EVP_PKEY_ASN1_METHOD *ameth,
403 int (*pkey_check) (const EVP_PKEY *pk))
404{
405 ameth->pkey_check = pkey_check;
406}
407
408void EVP_PKEY_asn1_set_public_check(EVP_PKEY_ASN1_METHOD *ameth,
409 int (*pkey_pub_check) (const EVP_PKEY *pk))
410{
411 ameth->pkey_public_check = pkey_pub_check;
412}
413
414void EVP_PKEY_asn1_set_param_check(EVP_PKEY_ASN1_METHOD *ameth,
415 int (*pkey_param_check) (const EVP_PKEY *pk))
416{
417 ameth->pkey_param_check = pkey_param_check;
418}
419
420void EVP_PKEY_asn1_set_set_priv_key(EVP_PKEY_ASN1_METHOD *ameth,
421 int (*set_priv_key) (EVP_PKEY *pk,
422 const unsigned char
423 *priv,
424 size_t len))
425{
426 ameth->set_priv_key = set_priv_key;
427}
428
429void EVP_PKEY_asn1_set_set_pub_key(EVP_PKEY_ASN1_METHOD *ameth,
430 int (*set_pub_key) (EVP_PKEY *pk,
431 const unsigned char *pub,
432 size_t len))
433{
434 ameth->set_pub_key = set_pub_key;
435}
436
437void EVP_PKEY_asn1_set_get_priv_key(EVP_PKEY_ASN1_METHOD *ameth,
438 int (*get_priv_key) (const EVP_PKEY *pk,
439 unsigned char *priv,
440 size_t *len))
441{
442 ameth->get_priv_key = get_priv_key;
443}
444
445void EVP_PKEY_asn1_set_get_pub_key(EVP_PKEY_ASN1_METHOD *ameth,
446 int (*get_pub_key) (const EVP_PKEY *pk,
447 unsigned char *pub,
448 size_t *len))
449{
450 ameth->get_pub_key = get_pub_key;
451}
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