2 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
5 /* ====================================================================
6 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
60 #include "internal/cryptlib.h"
61 #include <openssl/asn1t.h>
62 #include <openssl/x509.h>
63 #ifndef OPENSSL_NO_ENGINE
64 # include <openssl/engine.h>
66 #include "internal/asn1_int.h"
68 /* Keep this sorted in type order !! */
69 static const EVP_PKEY_ASN1_METHOD *standard_methods[] = {
70 #ifndef OPENSSL_NO_RSA
77 #ifndef OPENSSL_NO_DSA
94 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
95 DECLARE_STACK_OF(EVP_PKEY_ASN1_METHOD)
96 static STACK_OF(EVP_PKEY_ASN1_METHOD) *app_methods = NULL;
102 for (i = 0; i < OSSL_NELEM(standard_methods); i++)
103 fprintf(stderr, "Number %d id=%d (%s)\n", i,
104 standard_methods[i]->pkey_id,
105 OBJ_nid2sn(standard_methods[i]->pkey_id));
109 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
110 const EVP_PKEY_ASN1_METHOD *, ameth);
112 static int ameth_cmp(const EVP_PKEY_ASN1_METHOD *const *a,
113 const EVP_PKEY_ASN1_METHOD *const *b)
115 return ((*a)->pkey_id - (*b)->pkey_id);
118 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
119 const EVP_PKEY_ASN1_METHOD *, ameth);
121 int EVP_PKEY_asn1_get_count(void)
123 int num = OSSL_NELEM(standard_methods);
125 num += sk_EVP_PKEY_ASN1_METHOD_num(app_methods);
129 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx)
131 int num = OSSL_NELEM(standard_methods);
135 return standard_methods[idx];
137 return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
140 static const EVP_PKEY_ASN1_METHOD *pkey_asn1_find(int type)
142 EVP_PKEY_ASN1_METHOD tmp;
143 const EVP_PKEY_ASN1_METHOD *t = &tmp, **ret;
147 idx = sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp);
149 return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
151 ret = OBJ_bsearch_ameth(&t, standard_methods, OSSL_NELEM(standard_methods));
158 * Find an implementation of an ASN1 algorithm. If 'pe' is not NULL also
159 * search through engines and set *pe to a functional reference to the engine
160 * implementing 'type' or NULL if no engine implements it.
163 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type)
165 const EVP_PKEY_ASN1_METHOD *t;
168 t = pkey_asn1_find(type);
169 if (!t || !(t->pkey_flags & ASN1_PKEY_ALIAS))
171 type = t->pkey_base_id;
174 #ifndef OPENSSL_NO_ENGINE
176 /* type will contain the final unaliased type */
177 e = ENGINE_get_pkey_asn1_meth_engine(type);
180 return ENGINE_get_pkey_asn1_meth(e, type);
188 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe,
189 const char *str, int len)
192 const EVP_PKEY_ASN1_METHOD *ameth;
196 #ifndef OPENSSL_NO_ENGINE
198 ameth = ENGINE_pkey_asn1_find_str(&e, str, len);
201 * Convert structural into functional reference
212 for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) {
213 ameth = EVP_PKEY_asn1_get0(i);
214 if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
216 if (((int)strlen(ameth->pem_str) == len)
217 && (strncasecmp(ameth->pem_str, str, len) == 0))
223 int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth)
225 if (app_methods == NULL) {
226 app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp);
230 if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods, ameth))
232 sk_EVP_PKEY_ASN1_METHOD_sort(app_methods);
236 int EVP_PKEY_asn1_add_alias(int to, int from)
238 EVP_PKEY_ASN1_METHOD *ameth;
239 ameth = EVP_PKEY_asn1_new(from, ASN1_PKEY_ALIAS, NULL, NULL);
242 ameth->pkey_base_id = to;
243 if (!EVP_PKEY_asn1_add0(ameth)) {
244 EVP_PKEY_asn1_free(ameth);
250 int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *ppkey_base_id,
251 int *ppkey_flags, const char **pinfo,
252 const char **ppem_str,
253 const EVP_PKEY_ASN1_METHOD *ameth)
258 *ppkey_id = ameth->pkey_id;
260 *ppkey_base_id = ameth->pkey_base_id;
262 *ppkey_flags = ameth->pkey_flags;
264 *pinfo = ameth->info;
266 *ppem_str = ameth->pem_str;
270 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_get0_asn1(EVP_PKEY *pkey)
275 EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_new(int id, int flags,
276 const char *pem_str, const char *info)
278 EVP_PKEY_ASN1_METHOD *ameth = OPENSSL_zalloc(sizeof(*ameth));
284 ameth->pkey_base_id = id;
285 ameth->pkey_flags = flags | ASN1_PKEY_DYNAMIC;
288 ameth->info = BUF_strdup(info);
294 ameth->pem_str = BUF_strdup(pem_str);
302 EVP_PKEY_asn1_free(ameth);
307 void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst,
308 const EVP_PKEY_ASN1_METHOD *src)
311 dst->pub_decode = src->pub_decode;
312 dst->pub_encode = src->pub_encode;
313 dst->pub_cmp = src->pub_cmp;
314 dst->pub_print = src->pub_print;
316 dst->priv_decode = src->priv_decode;
317 dst->priv_encode = src->priv_encode;
318 dst->priv_print = src->priv_print;
320 dst->old_priv_encode = src->old_priv_encode;
321 dst->old_priv_decode = src->old_priv_decode;
323 dst->pkey_size = src->pkey_size;
324 dst->pkey_bits = src->pkey_bits;
326 dst->param_decode = src->param_decode;
327 dst->param_encode = src->param_encode;
328 dst->param_missing = src->param_missing;
329 dst->param_copy = src->param_copy;
330 dst->param_cmp = src->param_cmp;
331 dst->param_print = src->param_print;
333 dst->pkey_free = src->pkey_free;
334 dst->pkey_ctrl = src->pkey_ctrl;
336 dst->item_sign = src->item_sign;
337 dst->item_verify = src->item_verify;
341 void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth)
343 if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC)) {
344 OPENSSL_free(ameth->pem_str);
345 OPENSSL_free(ameth->info);
350 void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth,
351 int (*pub_decode) (EVP_PKEY *pk,
353 int (*pub_encode) (X509_PUBKEY *pub,
355 int (*pub_cmp) (const EVP_PKEY *a,
357 int (*pub_print) (BIO *out,
358 const EVP_PKEY *pkey,
359 int indent, ASN1_PCTX *pctx),
360 int (*pkey_size) (const EVP_PKEY *pk),
361 int (*pkey_bits) (const EVP_PKEY *pk))
363 ameth->pub_decode = pub_decode;
364 ameth->pub_encode = pub_encode;
365 ameth->pub_cmp = pub_cmp;
366 ameth->pub_print = pub_print;
367 ameth->pkey_size = pkey_size;
368 ameth->pkey_bits = pkey_bits;
371 void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth,
372 int (*priv_decode) (EVP_PKEY *pk,
375 int (*priv_encode) (PKCS8_PRIV_KEY_INFO *p8,
377 int (*priv_print) (BIO *out,
378 const EVP_PKEY *pkey,
382 ameth->priv_decode = priv_decode;
383 ameth->priv_encode = priv_encode;
384 ameth->priv_print = priv_print;
387 void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth,
388 int (*param_decode) (EVP_PKEY *pkey,
389 const unsigned char **pder,
391 int (*param_encode) (const EVP_PKEY *pkey,
392 unsigned char **pder),
393 int (*param_missing) (const EVP_PKEY *pk),
394 int (*param_copy) (EVP_PKEY *to,
395 const EVP_PKEY *from),
396 int (*param_cmp) (const EVP_PKEY *a,
398 int (*param_print) (BIO *out,
399 const EVP_PKEY *pkey,
400 int indent, ASN1_PCTX *pctx))
402 ameth->param_decode = param_decode;
403 ameth->param_encode = param_encode;
404 ameth->param_missing = param_missing;
405 ameth->param_copy = param_copy;
406 ameth->param_cmp = param_cmp;
407 ameth->param_print = param_print;
410 void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth,
411 void (*pkey_free) (EVP_PKEY *pkey))
413 ameth->pkey_free = pkey_free;
416 void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
417 int (*pkey_ctrl) (EVP_PKEY *pkey, int op,
418 long arg1, void *arg2))
420 ameth->pkey_ctrl = pkey_ctrl;
423 void EVP_PKEY_asn1_set_security_bits(EVP_PKEY_ASN1_METHOD *ameth,
424 int (*pkey_security_bits) (const EVP_PKEY
427 ameth->pkey_security_bits = pkey_security_bits;
430 void EVP_PKEY_asn1_set_item(EVP_PKEY_ASN1_METHOD *ameth,
431 int (*item_verify) (EVP_MD_CTX *ctx,
435 ASN1_BIT_STRING *sig,
437 int (*item_sign) (EVP_MD_CTX *ctx,
442 ASN1_BIT_STRING *sig))
444 ameth->item_sign = item_sign;
445 ameth->item_verify = item_verify;