2 * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
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
10 #include "e_os.h" /* for strncasecmp */
11 #include "internal/cryptlib.h"
13 #include <openssl/asn1t.h>
14 #include <openssl/x509.h>
15 #include <openssl/engine.h>
16 #include "internal/asn1_int.h"
17 #include "internal/evp_int.h"
19 #include "standard_methods.h"
21 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
22 static STACK_OF(EVP_PKEY_ASN1_METHOD) *app_methods = NULL;
24 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
25 const EVP_PKEY_ASN1_METHOD *, ameth);
27 static int ameth_cmp(const EVP_PKEY_ASN1_METHOD *const *a,
28 const EVP_PKEY_ASN1_METHOD *const *b)
30 return ((*a)->pkey_id - (*b)->pkey_id);
33 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
34 const EVP_PKEY_ASN1_METHOD *, ameth);
36 int EVP_PKEY_asn1_get_count(void)
38 int num = OSSL_NELEM(standard_methods);
40 num += sk_EVP_PKEY_ASN1_METHOD_num(app_methods);
44 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx)
46 int num = OSSL_NELEM(standard_methods);
50 return standard_methods[idx];
52 return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
55 static const EVP_PKEY_ASN1_METHOD *pkey_asn1_find(int type)
57 EVP_PKEY_ASN1_METHOD tmp;
58 const EVP_PKEY_ASN1_METHOD *t = &tmp, **ret;
62 idx = sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp);
64 return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
66 ret = OBJ_bsearch_ameth(&t, standard_methods, OSSL_NELEM(standard_methods));
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.
78 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type)
80 const EVP_PKEY_ASN1_METHOD *t;
83 t = pkey_asn1_find(type);
84 if (!t || !(t->pkey_flags & ASN1_PKEY_ALIAS))
86 type = t->pkey_base_id;
89 #ifndef OPENSSL_NO_ENGINE
91 /* type will contain the final unaliased type */
92 e = ENGINE_get_pkey_asn1_meth_engine(type);
95 return ENGINE_get_pkey_asn1_meth(e, type);
103 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe,
104 const char *str, int len)
107 const EVP_PKEY_ASN1_METHOD *ameth = NULL;
112 #ifndef OPENSSL_NO_ENGINE
114 ameth = ENGINE_pkey_asn1_find_str(&e, str, len);
117 * Convert structural into functional reference
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)
132 if ((int)strlen(ameth->pem_str) == len
133 && strncasecmp(ameth->pem_str, str, len) == 0)
139 int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth)
141 EVP_PKEY_ASN1_METHOD tmp = { 0, };
143 if (app_methods == NULL) {
144 app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp);
145 if (app_methods == NULL)
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);
156 if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods, ameth))
158 sk_EVP_PKEY_ASN1_METHOD_sort(app_methods);
162 int EVP_PKEY_asn1_add_alias(int to, int from)
164 EVP_PKEY_ASN1_METHOD *ameth;
165 ameth = EVP_PKEY_asn1_new(from, ASN1_PKEY_ALIAS, NULL, NULL);
168 ameth->pkey_base_id = to;
169 if (!EVP_PKEY_asn1_add0(ameth)) {
170 EVP_PKEY_asn1_free(ameth);
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)
184 *ppkey_id = ameth->pkey_id;
186 *ppkey_base_id = ameth->pkey_base_id;
188 *ppkey_flags = ameth->pkey_flags;
190 *pinfo = ameth->info;
192 *ppem_str = ameth->pem_str;
196 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_get0_asn1(const EVP_PKEY *pkey)
201 EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_new(int id, int flags,
202 const char *pem_str, const char *info)
204 EVP_PKEY_ASN1_METHOD *ameth = OPENSSL_zalloc(sizeof(*ameth));
210 ameth->pkey_base_id = id;
211 ameth->pkey_flags = flags | ASN1_PKEY_DYNAMIC;
214 ameth->info = OPENSSL_strdup(info);
220 * One of the following must be true:
222 * pem_str == NULL AND ASN1_PKEY_ALIAS is set
223 * pem_str != NULL AND ASN1_PKEY_ALIAS is clear
225 * Anything else is an error and may lead to a corrupt ASN1 method table
227 if (!((pem_str == NULL && (flags & ASN1_PKEY_ALIAS) != 0)
228 || (pem_str != NULL && (flags & ASN1_PKEY_ALIAS) == 0)))
232 ameth->pem_str = OPENSSL_strdup(pem_str);
240 EVP_PKEY_asn1_free(ameth);
245 void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst,
246 const EVP_PKEY_ASN1_METHOD *src)
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;
254 dst->priv_decode = src->priv_decode;
255 dst->priv_encode = src->priv_encode;
256 dst->priv_print = src->priv_print;
258 dst->old_priv_encode = src->old_priv_encode;
259 dst->old_priv_decode = src->old_priv_decode;
261 dst->pkey_size = src->pkey_size;
262 dst->pkey_bits = src->pkey_bits;
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;
271 dst->pkey_free = src->pkey_free;
272 dst->pkey_ctrl = src->pkey_ctrl;
274 dst->item_sign = src->item_sign;
275 dst->item_verify = src->item_verify;
277 dst->siginf_set = src->siginf_set;
279 dst->pkey_check = src->pkey_check;
283 void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth)
285 if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC)) {
286 OPENSSL_free(ameth->pem_str);
287 OPENSSL_free(ameth->info);
292 void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth,
293 int (*pub_decode) (EVP_PKEY *pk,
295 int (*pub_encode) (X509_PUBKEY *pub,
297 int (*pub_cmp) (const EVP_PKEY *a,
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))
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;
313 void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth,
314 int (*priv_decode) (EVP_PKEY *pk,
315 const PKCS8_PRIV_KEY_INFO
317 int (*priv_encode) (PKCS8_PRIV_KEY_INFO *p8,
319 int (*priv_print) (BIO *out,
320 const EVP_PKEY *pkey,
324 ameth->priv_decode = priv_decode;
325 ameth->priv_encode = priv_encode;
326 ameth->priv_print = priv_print;
329 void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth,
330 int (*param_decode) (EVP_PKEY *pkey,
331 const unsigned char **pder,
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,
340 int (*param_print) (BIO *out,
341 const EVP_PKEY *pkey,
342 int indent, ASN1_PCTX *pctx))
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;
352 void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth,
353 void (*pkey_free) (EVP_PKEY *pkey))
355 ameth->pkey_free = pkey_free;
358 void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
359 int (*pkey_ctrl) (EVP_PKEY *pkey, int op,
360 long arg1, void *arg2))
362 ameth->pkey_ctrl = pkey_ctrl;
365 void EVP_PKEY_asn1_set_security_bits(EVP_PKEY_ASN1_METHOD *ameth,
366 int (*pkey_security_bits) (const EVP_PKEY
369 ameth->pkey_security_bits = pkey_security_bits;
372 void EVP_PKEY_asn1_set_item(EVP_PKEY_ASN1_METHOD *ameth,
373 int (*item_verify) (EVP_MD_CTX *ctx,
377 ASN1_BIT_STRING *sig,
379 int (*item_sign) (EVP_MD_CTX *ctx,
384 ASN1_BIT_STRING *sig))
386 ameth->item_sign = item_sign;
387 ameth->item_verify = item_verify;
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))
395 ameth->siginf_set = siginf_set;
398 void EVP_PKEY_asn1_set_check(EVP_PKEY_ASN1_METHOD *ameth,
399 int (*pkey_check) (const EVP_PKEY *pk))
401 ameth->pkey_check = pkey_check;
404 void EVP_PKEY_asn1_set_public_check(EVP_PKEY_ASN1_METHOD *ameth,
405 int (*pkey_pub_check) (const EVP_PKEY *pk))
407 ameth->pkey_public_check = pkey_pub_check;
410 void EVP_PKEY_asn1_set_param_check(EVP_PKEY_ASN1_METHOD *ameth,
411 int (*pkey_param_check) (const EVP_PKEY *pk))
413 ameth->pkey_param_check = pkey_param_check;
416 void EVP_PKEY_asn1_set_set_priv_key(EVP_PKEY_ASN1_METHOD *ameth,
417 int (*set_priv_key) (EVP_PKEY *pk,
422 ameth->set_priv_key = set_priv_key;
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,
430 ameth->set_pub_key = set_pub_key;
433 void EVP_PKEY_asn1_set_get_priv_key(EVP_PKEY_ASN1_METHOD *ameth,
434 int (*get_priv_key) (const EVP_PKEY *pk,
438 ameth->get_priv_key = get_priv_key;
441 void EVP_PKEY_asn1_set_get_pub_key(EVP_PKEY_ASN1_METHOD *ameth,
442 int (*get_pub_key) (const EVP_PKEY *pk,
446 ameth->get_pub_key = get_pub_key;