2 * Copyright 2006-2021 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (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 /* We need to use some engine deprecated APIs */
11 #define OPENSSL_SUPPRESS_DEPRECATED
13 #include "e_os.h" /* for strncasecmp */
14 #include "internal/cryptlib.h"
16 #include <openssl/asn1t.h>
17 #include <openssl/x509.h>
18 #include <openssl/engine.h>
19 #include "crypto/asn1.h"
20 #include "crypto/evp.h"
22 #include "standard_methods.h"
24 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
25 static STACK_OF(EVP_PKEY_ASN1_METHOD) *app_methods = NULL;
27 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
28 const EVP_PKEY_ASN1_METHOD *, ameth);
30 static int ameth_cmp(const EVP_PKEY_ASN1_METHOD *const *a,
31 const EVP_PKEY_ASN1_METHOD *const *b)
33 return ((*a)->pkey_id - (*b)->pkey_id);
36 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
37 const EVP_PKEY_ASN1_METHOD *, ameth);
39 int EVP_PKEY_asn1_get_count(void)
41 int num = OSSL_NELEM(standard_methods);
43 num += sk_EVP_PKEY_ASN1_METHOD_num(app_methods);
47 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx)
49 int num = OSSL_NELEM(standard_methods);
53 return standard_methods[idx];
55 return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
58 static const EVP_PKEY_ASN1_METHOD *pkey_asn1_find(int type)
60 EVP_PKEY_ASN1_METHOD tmp;
61 const EVP_PKEY_ASN1_METHOD *t = &tmp, **ret;
66 idx = sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp);
68 return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
70 ret = OBJ_bsearch_ameth(&t, standard_methods, OSSL_NELEM(standard_methods));
71 if (ret == NULL || *ret == NULL)
77 * Find an implementation of an ASN1 algorithm. If 'pe' is not NULL also
78 * search through engines and set *pe to a functional reference to the engine
79 * implementing 'type' or NULL if no engine implements it.
82 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type)
84 const EVP_PKEY_ASN1_METHOD *t;
87 t = pkey_asn1_find(type);
88 if (!t || !(t->pkey_flags & ASN1_PKEY_ALIAS))
90 type = t->pkey_base_id;
93 #ifndef OPENSSL_NO_ENGINE
95 /* type will contain the final unaliased type */
96 e = ENGINE_get_pkey_asn1_meth_engine(type);
99 return ENGINE_get_pkey_asn1_meth(e, type);
107 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe,
108 const char *str, int len)
111 const EVP_PKEY_ASN1_METHOD *ameth = NULL;
116 #ifndef OPENSSL_NO_ENGINE
118 ameth = ENGINE_pkey_asn1_find_str(&e, str, len);
121 * Convert structural into functional reference
132 for (i = EVP_PKEY_asn1_get_count(); i-- > 0; ) {
133 ameth = EVP_PKEY_asn1_get0(i);
134 if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
136 if ((int)strlen(ameth->pem_str) == len
137 && strncasecmp(ameth->pem_str, str, len) == 0)
143 int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth)
145 EVP_PKEY_ASN1_METHOD tmp = { 0, };
148 * One of the following must be true:
150 * pem_str == NULL AND ASN1_PKEY_ALIAS is set
151 * pem_str != NULL AND ASN1_PKEY_ALIAS is clear
153 * Anything else is an error and may lead to a corrupt ASN1 method table
155 if (!((ameth->pem_str == NULL
156 && (ameth->pkey_flags & ASN1_PKEY_ALIAS) != 0)
157 || (ameth->pem_str != NULL
158 && (ameth->pkey_flags & ASN1_PKEY_ALIAS) == 0))) {
159 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_INVALID_ARGUMENT);
163 if (app_methods == NULL) {
164 app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp);
165 if (app_methods == NULL)
169 tmp.pkey_id = ameth->pkey_id;
170 if (sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp) >= 0) {
171 ERR_raise(ERR_LIB_EVP,
172 EVP_R_PKEY_APPLICATION_ASN1_METHOD_ALREADY_REGISTERED);
176 if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods, ameth))
178 sk_EVP_PKEY_ASN1_METHOD_sort(app_methods);
182 int EVP_PKEY_asn1_add_alias(int to, int from)
184 EVP_PKEY_ASN1_METHOD *ameth;
185 ameth = EVP_PKEY_asn1_new(from, ASN1_PKEY_ALIAS, NULL, NULL);
188 ameth->pkey_base_id = to;
189 if (!EVP_PKEY_asn1_add0(ameth)) {
190 EVP_PKEY_asn1_free(ameth);
196 int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *ppkey_base_id,
197 int *ppkey_flags, const char **pinfo,
198 const char **ppem_str,
199 const EVP_PKEY_ASN1_METHOD *ameth)
204 *ppkey_id = ameth->pkey_id;
206 *ppkey_base_id = ameth->pkey_base_id;
208 *ppkey_flags = ameth->pkey_flags;
210 *pinfo = ameth->info;
212 *ppem_str = ameth->pem_str;
216 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_get0_asn1(const EVP_PKEY *pkey)
221 EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_new(int id, int flags,
222 const char *pem_str, const char *info)
224 EVP_PKEY_ASN1_METHOD *ameth = OPENSSL_zalloc(sizeof(*ameth));
227 ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
232 ameth->pkey_base_id = id;
233 ameth->pkey_flags = flags | ASN1_PKEY_DYNAMIC;
236 ameth->info = OPENSSL_strdup(info);
237 if (ameth->info == NULL)
242 ameth->pem_str = OPENSSL_strdup(pem_str);
243 if (ameth->pem_str == NULL)
250 EVP_PKEY_asn1_free(ameth);
251 ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
255 void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst,
256 const EVP_PKEY_ASN1_METHOD *src)
258 int pkey_id = dst->pkey_id;
259 int pkey_base_id = dst->pkey_base_id;
260 unsigned long pkey_flags = dst->pkey_flags;
261 char *pem_str = dst->pem_str;
262 char *info = dst->info;
266 /* We only copy the function pointers so restore the other values */
267 dst->pkey_id = pkey_id;
268 dst->pkey_base_id = pkey_base_id;
269 dst->pkey_flags = pkey_flags;
270 dst->pem_str = pem_str;
274 void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth)
276 if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC)) {
277 OPENSSL_free(ameth->pem_str);
278 OPENSSL_free(ameth->info);
283 void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth,
284 int (*pub_decode) (EVP_PKEY *pk,
285 const X509_PUBKEY *pub),
286 int (*pub_encode) (X509_PUBKEY *pub,
288 int (*pub_cmp) (const EVP_PKEY *a,
290 int (*pub_print) (BIO *out,
291 const EVP_PKEY *pkey,
292 int indent, ASN1_PCTX *pctx),
293 int (*pkey_size) (const EVP_PKEY *pk),
294 int (*pkey_bits) (const EVP_PKEY *pk))
296 ameth->pub_decode = pub_decode;
297 ameth->pub_encode = pub_encode;
298 ameth->pub_cmp = pub_cmp;
299 ameth->pub_print = pub_print;
300 ameth->pkey_size = pkey_size;
301 ameth->pkey_bits = pkey_bits;
304 void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth,
305 int (*priv_decode) (EVP_PKEY *pk,
306 const PKCS8_PRIV_KEY_INFO
308 int (*priv_encode) (PKCS8_PRIV_KEY_INFO *p8,
310 int (*priv_print) (BIO *out,
311 const EVP_PKEY *pkey,
315 ameth->priv_decode = priv_decode;
316 ameth->priv_encode = priv_encode;
317 ameth->priv_print = priv_print;
320 void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth,
321 int (*param_decode) (EVP_PKEY *pkey,
322 const unsigned char **pder,
324 int (*param_encode) (const EVP_PKEY *pkey,
325 unsigned char **pder),
326 int (*param_missing) (const EVP_PKEY *pk),
327 int (*param_copy) (EVP_PKEY *to,
328 const EVP_PKEY *from),
329 int (*param_cmp) (const EVP_PKEY *a,
331 int (*param_print) (BIO *out,
332 const EVP_PKEY *pkey,
333 int indent, ASN1_PCTX *pctx))
335 ameth->param_decode = param_decode;
336 ameth->param_encode = param_encode;
337 ameth->param_missing = param_missing;
338 ameth->param_copy = param_copy;
339 ameth->param_cmp = param_cmp;
340 ameth->param_print = param_print;
343 void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth,
344 void (*pkey_free) (EVP_PKEY *pkey))
346 ameth->pkey_free = pkey_free;
349 void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
350 int (*pkey_ctrl) (EVP_PKEY *pkey, int op,
351 long arg1, void *arg2))
353 ameth->pkey_ctrl = pkey_ctrl;
356 void EVP_PKEY_asn1_set_security_bits(EVP_PKEY_ASN1_METHOD *ameth,
357 int (*pkey_security_bits) (const EVP_PKEY
360 ameth->pkey_security_bits = pkey_security_bits;
363 void EVP_PKEY_asn1_set_item(EVP_PKEY_ASN1_METHOD *ameth,
364 int (*item_verify) (EVP_MD_CTX *ctx,
368 const ASN1_BIT_STRING *sig,
370 int (*item_sign) (EVP_MD_CTX *ctx,
375 ASN1_BIT_STRING *sig))
377 ameth->item_sign = item_sign;
378 ameth->item_verify = item_verify;
381 void EVP_PKEY_asn1_set_siginf(EVP_PKEY_ASN1_METHOD *ameth,
382 int (*siginf_set) (X509_SIG_INFO *siginf,
383 const X509_ALGOR *alg,
384 const ASN1_STRING *sig))
386 ameth->siginf_set = siginf_set;
389 void EVP_PKEY_asn1_set_check(EVP_PKEY_ASN1_METHOD *ameth,
390 int (*pkey_check) (const EVP_PKEY *pk))
392 ameth->pkey_check = pkey_check;
395 void EVP_PKEY_asn1_set_public_check(EVP_PKEY_ASN1_METHOD *ameth,
396 int (*pkey_pub_check) (const EVP_PKEY *pk))
398 ameth->pkey_public_check = pkey_pub_check;
401 void EVP_PKEY_asn1_set_param_check(EVP_PKEY_ASN1_METHOD *ameth,
402 int (*pkey_param_check) (const EVP_PKEY *pk))
404 ameth->pkey_param_check = pkey_param_check;
407 void EVP_PKEY_asn1_set_set_priv_key(EVP_PKEY_ASN1_METHOD *ameth,
408 int (*set_priv_key) (EVP_PKEY *pk,
413 ameth->set_priv_key = set_priv_key;
416 void EVP_PKEY_asn1_set_set_pub_key(EVP_PKEY_ASN1_METHOD *ameth,
417 int (*set_pub_key) (EVP_PKEY *pk,
418 const unsigned char *pub,
421 ameth->set_pub_key = set_pub_key;
424 void EVP_PKEY_asn1_set_get_priv_key(EVP_PKEY_ASN1_METHOD *ameth,
425 int (*get_priv_key) (const EVP_PKEY *pk,
429 ameth->get_priv_key = get_priv_key;
432 void EVP_PKEY_asn1_set_get_pub_key(EVP_PKEY_ASN1_METHOD *ameth,
433 int (*get_pub_key) (const EVP_PKEY *pk,
437 ameth->get_pub_key = get_pub_key;