2 * Copyright 1995-2016 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
11 #include "internal/cryptlib.h"
12 #include <openssl/bn.h>
13 #include <openssl/err.h>
14 #include <openssl/objects.h>
15 #include <openssl/evp.h>
16 #include <openssl/x509.h>
17 #include <openssl/rsa.h>
18 #include <openssl/dsa.h>
19 #include <openssl/dh.h>
20 #include <openssl/engine.h>
22 #include "internal/asn1_int.h"
23 #include "internal/evp_int.h"
25 static void EVP_PKEY_free_it(EVP_PKEY
*x
);
27 int EVP_PKEY_bits(EVP_PKEY
*pkey
)
29 if (pkey
&& pkey
->ameth
&& pkey
->ameth
->pkey_bits
)
30 return pkey
->ameth
->pkey_bits(pkey
);
34 int EVP_PKEY_security_bits(const EVP_PKEY
*pkey
)
38 if (!pkey
->ameth
|| !pkey
->ameth
->pkey_security_bits
)
40 return pkey
->ameth
->pkey_security_bits(pkey
);
43 int EVP_PKEY_size(EVP_PKEY
*pkey
)
45 if (pkey
&& pkey
->ameth
&& pkey
->ameth
->pkey_size
)
46 return pkey
->ameth
->pkey_size(pkey
);
50 int EVP_PKEY_save_parameters(EVP_PKEY
*pkey
, int mode
)
52 #ifndef OPENSSL_NO_DSA
53 if (pkey
->type
== EVP_PKEY_DSA
) {
54 int ret
= pkey
->save_parameters
;
57 pkey
->save_parameters
= mode
;
62 if (pkey
->type
== EVP_PKEY_EC
) {
63 int ret
= pkey
->save_parameters
;
66 pkey
->save_parameters
= mode
;
73 int EVP_PKEY_copy_parameters(EVP_PKEY
*to
, const EVP_PKEY
*from
)
75 if (to
->type
== EVP_PKEY_NONE
) {
76 if (EVP_PKEY_set_type(to
, from
->type
) == 0)
78 } else if (to
->type
!= from
->type
) {
79 EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS
, EVP_R_DIFFERENT_KEY_TYPES
);
83 if (EVP_PKEY_missing_parameters(from
)) {
84 EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS
, EVP_R_MISSING_PARAMETERS
);
87 if (from
->ameth
&& from
->ameth
->param_copy
)
88 return from
->ameth
->param_copy(to
, from
);
93 int EVP_PKEY_missing_parameters(const EVP_PKEY
*pkey
)
95 if (pkey
->ameth
&& pkey
->ameth
->param_missing
)
96 return pkey
->ameth
->param_missing(pkey
);
100 int EVP_PKEY_cmp_parameters(const EVP_PKEY
*a
, const EVP_PKEY
*b
)
102 if (a
->type
!= b
->type
)
104 if (a
->ameth
&& a
->ameth
->param_cmp
)
105 return a
->ameth
->param_cmp(a
, b
);
109 int EVP_PKEY_cmp(const EVP_PKEY
*a
, const EVP_PKEY
*b
)
111 if (a
->type
!= b
->type
)
116 /* Compare parameters if the algorithm has them */
117 if (a
->ameth
->param_cmp
) {
118 ret
= a
->ameth
->param_cmp(a
, b
);
123 if (a
->ameth
->pub_cmp
)
124 return a
->ameth
->pub_cmp(a
, b
);
130 EVP_PKEY
*EVP_PKEY_new(void)
132 EVP_PKEY
*ret
= OPENSSL_zalloc(sizeof(*ret
));
135 EVPerr(EVP_F_EVP_PKEY_NEW
, ERR_R_MALLOC_FAILURE
);
138 ret
->type
= EVP_PKEY_NONE
;
139 ret
->save_type
= EVP_PKEY_NONE
;
141 ret
->save_parameters
= 1;
142 ret
->lock
= CRYPTO_THREAD_lock_new();
143 if (ret
->lock
== NULL
) {
144 EVPerr(EVP_F_EVP_PKEY_NEW
, ERR_R_MALLOC_FAILURE
);
151 int EVP_PKEY_up_ref(EVP_PKEY
*pkey
)
155 if (CRYPTO_atomic_add(&pkey
->references
, 1, &i
, pkey
->lock
) <= 0)
158 REF_PRINT_COUNT("EVP_PKEY", pkey
);
159 REF_ASSERT_ISNT(i
< 2);
160 return ((i
> 1) ? 1 : 0);
164 * Setup a public key ASN1 method and ENGINE from a NID or a string. If pkey
165 * is NULL just return 1 or 0 if the algorithm exists.
168 static int pkey_set_type(EVP_PKEY
*pkey
, int type
, const char *str
, int len
)
170 const EVP_PKEY_ASN1_METHOD
*ameth
;
174 EVP_PKEY_free_it(pkey
);
176 * If key type matches and a method exists then this lookup has
177 * succeeded once so just indicate success.
179 if ((type
== pkey
->save_type
) && pkey
->ameth
)
181 #ifndef OPENSSL_NO_ENGINE
182 /* If we have an ENGINE release it */
183 ENGINE_finish(pkey
->engine
);
188 ameth
= EVP_PKEY_asn1_find_str(&e
, str
, len
);
190 ameth
= EVP_PKEY_asn1_find(&e
, type
);
191 #ifndef OPENSSL_NO_ENGINE
196 EVPerr(EVP_F_PKEY_SET_TYPE
, EVP_R_UNSUPPORTED_ALGORITHM
);
203 pkey
->type
= pkey
->ameth
->pkey_id
;
204 pkey
->save_type
= type
;
209 int EVP_PKEY_set_type(EVP_PKEY
*pkey
, int type
)
211 return pkey_set_type(pkey
, type
, NULL
, -1);
214 int EVP_PKEY_set_type_str(EVP_PKEY
*pkey
, const char *str
, int len
)
216 return pkey_set_type(pkey
, EVP_PKEY_NONE
, str
, len
);
219 int EVP_PKEY_assign(EVP_PKEY
*pkey
, int type
, void *key
)
221 if (pkey
== NULL
|| !EVP_PKEY_set_type(pkey
, type
))
223 pkey
->pkey
.ptr
= key
;
224 return (key
!= NULL
);
227 void *EVP_PKEY_get0(const EVP_PKEY
*pkey
)
229 return pkey
->pkey
.ptr
;
232 #ifndef OPENSSL_NO_RSA
233 int EVP_PKEY_set1_RSA(EVP_PKEY
*pkey
, RSA
*key
)
235 int ret
= EVP_PKEY_assign_RSA(pkey
, key
);
241 RSA
*EVP_PKEY_get0_RSA(EVP_PKEY
*pkey
)
243 if (pkey
->type
!= EVP_PKEY_RSA
) {
244 EVPerr(EVP_F_EVP_PKEY_GET0_RSA
, EVP_R_EXPECTING_AN_RSA_KEY
);
247 return pkey
->pkey
.rsa
;
250 RSA
*EVP_PKEY_get1_RSA(EVP_PKEY
*pkey
)
252 RSA
*ret
= EVP_PKEY_get0_RSA(pkey
);
259 #ifndef OPENSSL_NO_DSA
260 int EVP_PKEY_set1_DSA(EVP_PKEY
*pkey
, DSA
*key
)
262 int ret
= EVP_PKEY_assign_DSA(pkey
, key
);
268 DSA
*EVP_PKEY_get0_DSA(EVP_PKEY
*pkey
)
270 if (pkey
->type
!= EVP_PKEY_DSA
) {
271 EVPerr(EVP_F_EVP_PKEY_GET0_DSA
, EVP_R_EXPECTING_A_DSA_KEY
);
274 return pkey
->pkey
.dsa
;
277 DSA
*EVP_PKEY_get1_DSA(EVP_PKEY
*pkey
)
279 DSA
*ret
= EVP_PKEY_get0_DSA(pkey
);
286 #ifndef OPENSSL_NO_EC
288 int EVP_PKEY_set1_EC_KEY(EVP_PKEY
*pkey
, EC_KEY
*key
)
290 int ret
= EVP_PKEY_assign_EC_KEY(pkey
, key
);
296 EC_KEY
*EVP_PKEY_get0_EC_KEY(EVP_PKEY
*pkey
)
298 if (pkey
->type
!= EVP_PKEY_EC
) {
299 EVPerr(EVP_F_EVP_PKEY_GET0_EC_KEY
, EVP_R_EXPECTING_A_EC_KEY
);
302 return pkey
->pkey
.ec
;
305 EC_KEY
*EVP_PKEY_get1_EC_KEY(EVP_PKEY
*pkey
)
307 EC_KEY
*ret
= EVP_PKEY_get0_EC_KEY(pkey
);
314 #ifndef OPENSSL_NO_DH
316 int EVP_PKEY_set1_DH(EVP_PKEY
*pkey
, DH
*key
)
318 int ret
= EVP_PKEY_assign_DH(pkey
, key
);
324 DH
*EVP_PKEY_get0_DH(EVP_PKEY
*pkey
)
326 if (pkey
->type
!= EVP_PKEY_DH
&& pkey
->type
!= EVP_PKEY_DHX
) {
327 EVPerr(EVP_F_EVP_PKEY_GET0_DH
, EVP_R_EXPECTING_A_DH_KEY
);
330 return pkey
->pkey
.dh
;
333 DH
*EVP_PKEY_get1_DH(EVP_PKEY
*pkey
)
335 DH
*ret
= EVP_PKEY_get0_DH(pkey
);
342 int EVP_PKEY_type(int type
)
345 const EVP_PKEY_ASN1_METHOD
*ameth
;
347 ameth
= EVP_PKEY_asn1_find(&e
, type
);
349 ret
= ameth
->pkey_id
;
352 #ifndef OPENSSL_NO_ENGINE
358 int EVP_PKEY_id(const EVP_PKEY
*pkey
)
363 int EVP_PKEY_base_id(const EVP_PKEY
*pkey
)
365 return EVP_PKEY_type(pkey
->type
);
368 void EVP_PKEY_free(EVP_PKEY
*x
)
375 CRYPTO_atomic_add(&x
->references
, -1, &i
, x
->lock
);
376 REF_PRINT_COUNT("EVP_PKEY", x
);
379 REF_ASSERT_ISNT(i
< 0);
381 sk_X509_ATTRIBUTE_pop_free(x
->attributes
, X509_ATTRIBUTE_free
);
385 static void EVP_PKEY_free_it(EVP_PKEY
*x
)
387 /* internal function; x is never NULL */
388 if (x
->ameth
&& x
->ameth
->pkey_free
) {
389 x
->ameth
->pkey_free(x
);
392 #ifndef OPENSSL_NO_ENGINE
393 ENGINE_finish(x
->engine
);
396 CRYPTO_THREAD_lock_free(x
->lock
);
399 static int unsup_alg(BIO
*out
, const EVP_PKEY
*pkey
, int indent
,
402 BIO_indent(out
, indent
, 128);
403 BIO_printf(out
, "%s algorithm \"%s\" unsupported\n",
404 kstr
, OBJ_nid2ln(pkey
->type
));
408 int EVP_PKEY_print_public(BIO
*out
, const EVP_PKEY
*pkey
,
409 int indent
, ASN1_PCTX
*pctx
)
411 if (pkey
->ameth
&& pkey
->ameth
->pub_print
)
412 return pkey
->ameth
->pub_print(out
, pkey
, indent
, pctx
);
414 return unsup_alg(out
, pkey
, indent
, "Public Key");
417 int EVP_PKEY_print_private(BIO
*out
, const EVP_PKEY
*pkey
,
418 int indent
, ASN1_PCTX
*pctx
)
420 if (pkey
->ameth
&& pkey
->ameth
->priv_print
)
421 return pkey
->ameth
->priv_print(out
, pkey
, indent
, pctx
);
423 return unsup_alg(out
, pkey
, indent
, "Private Key");
426 int EVP_PKEY_print_params(BIO
*out
, const EVP_PKEY
*pkey
,
427 int indent
, ASN1_PCTX
*pctx
)
429 if (pkey
->ameth
&& pkey
->ameth
->param_print
)
430 return pkey
->ameth
->param_print(out
, pkey
, indent
, pctx
);
431 return unsup_alg(out
, pkey
, indent
, "Parameters");
434 int EVP_PKEY_get_default_digest_nid(EVP_PKEY
*pkey
, int *pnid
)
436 if (!pkey
->ameth
|| !pkey
->ameth
->pkey_ctrl
)
438 return pkey
->ameth
->pkey_ctrl(pkey
, ASN1_PKEY_CTRL_DEFAULT_MD_NID
,