3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
6 /* ====================================================================
7 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
62 #include "internal/cryptlib.h"
63 #ifndef OPENSSL_NO_ENGINE
64 # include <openssl/engine.h>
66 #include <openssl/evp.h>
67 #include "internal/asn1_int.h"
68 #include "internal/evp_int.h"
70 typedef int sk_cmp_fn_type(const char *const *a
, const char *const *b
);
72 DEFINE_CONST_STACK_OF(EVP_PKEY_METHOD
)
73 static STACK_OF(EVP_PKEY_METHOD
) *app_pkey_methods
= NULL
;
75 static const EVP_PKEY_METHOD
*standard_methods
[] = {
76 #ifndef OPENSSL_NO_RSA
82 #ifndef OPENSSL_NO_DSA
95 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD
*, const EVP_PKEY_METHOD
*,
98 static int pmeth_cmp(const EVP_PKEY_METHOD
*const *a
,
99 const EVP_PKEY_METHOD
*const *b
)
101 return ((*a
)->pkey_id
- (*b
)->pkey_id
);
104 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD
*, const EVP_PKEY_METHOD
*,
107 const EVP_PKEY_METHOD
*EVP_PKEY_meth_find(int type
)
110 const EVP_PKEY_METHOD
*t
= &tmp
, **ret
;
112 if (app_pkey_methods
) {
114 idx
= sk_EVP_PKEY_METHOD_find(app_pkey_methods
, &tmp
);
116 return sk_EVP_PKEY_METHOD_value(app_pkey_methods
, idx
);
118 ret
= OBJ_bsearch_pmeth(&t
, standard_methods
,
119 sizeof(standard_methods
) /
120 sizeof(EVP_PKEY_METHOD
*));
126 static EVP_PKEY_CTX
*int_ctx_new(EVP_PKEY
*pkey
, ENGINE
*e
, int id
)
129 const EVP_PKEY_METHOD
*pmeth
;
131 if (!pkey
|| !pkey
->ameth
)
133 id
= pkey
->ameth
->pkey_id
;
135 #ifndef OPENSSL_NO_ENGINE
136 if (pkey
&& pkey
->engine
)
138 /* Try to find an ENGINE which implements this method */
140 if (!ENGINE_init(e
)) {
141 EVPerr(EVP_F_INT_CTX_NEW
, ERR_R_ENGINE_LIB
);
145 e
= ENGINE_get_pkey_meth_engine(id
);
148 * If an ENGINE handled this method look it up. Othewise use internal
153 pmeth
= ENGINE_get_pkey_meth(e
, id
);
156 pmeth
= EVP_PKEY_meth_find(id
);
159 EVPerr(EVP_F_INT_CTX_NEW
, EVP_R_UNSUPPORTED_ALGORITHM
);
163 ret
= OPENSSL_zalloc(sizeof(*ret
));
165 #ifndef OPENSSL_NO_ENGINE
169 EVPerr(EVP_F_INT_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
174 ret
->operation
= EVP_PKEY_OP_UNDEFINED
;
177 CRYPTO_add(&pkey
->references
, 1, CRYPTO_LOCK_EVP_PKEY
);
180 if (pmeth
->init(ret
) <= 0) {
181 EVP_PKEY_CTX_free(ret
);
189 EVP_PKEY_METHOD
*EVP_PKEY_meth_new(int id
, int flags
)
191 EVP_PKEY_METHOD
*pmeth
;
193 pmeth
= OPENSSL_zalloc(sizeof(*pmeth
));
198 pmeth
->flags
= flags
| EVP_PKEY_FLAG_DYNAMIC
;
202 void EVP_PKEY_meth_get0_info(int *ppkey_id
, int *pflags
,
203 const EVP_PKEY_METHOD
*meth
)
206 *ppkey_id
= meth
->pkey_id
;
208 *pflags
= meth
->flags
;
211 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD
*dst
, const EVP_PKEY_METHOD
*src
)
214 dst
->init
= src
->init
;
215 dst
->copy
= src
->copy
;
216 dst
->cleanup
= src
->cleanup
;
218 dst
->paramgen_init
= src
->paramgen_init
;
219 dst
->paramgen
= src
->paramgen
;
221 dst
->keygen_init
= src
->keygen_init
;
222 dst
->keygen
= src
->keygen
;
224 dst
->sign_init
= src
->sign_init
;
225 dst
->sign
= src
->sign
;
227 dst
->verify_init
= src
->verify_init
;
228 dst
->verify
= src
->verify
;
230 dst
->verify_recover_init
= src
->verify_recover_init
;
231 dst
->verify_recover
= src
->verify_recover
;
233 dst
->signctx_init
= src
->signctx_init
;
234 dst
->signctx
= src
->signctx
;
236 dst
->verifyctx_init
= src
->verifyctx_init
;
237 dst
->verifyctx
= src
->verifyctx
;
239 dst
->encrypt_init
= src
->encrypt_init
;
240 dst
->encrypt
= src
->encrypt
;
242 dst
->decrypt_init
= src
->decrypt_init
;
243 dst
->decrypt
= src
->decrypt
;
245 dst
->derive_init
= src
->derive_init
;
246 dst
->derive
= src
->derive
;
248 dst
->ctrl
= src
->ctrl
;
249 dst
->ctrl_str
= src
->ctrl_str
;
252 void EVP_PKEY_meth_free(EVP_PKEY_METHOD
*pmeth
)
254 if (pmeth
&& (pmeth
->flags
& EVP_PKEY_FLAG_DYNAMIC
))
258 EVP_PKEY_CTX
*EVP_PKEY_CTX_new(EVP_PKEY
*pkey
, ENGINE
*e
)
260 return int_ctx_new(pkey
, e
, -1);
263 EVP_PKEY_CTX
*EVP_PKEY_CTX_new_id(int id
, ENGINE
*e
)
265 return int_ctx_new(NULL
, e
, id
);
268 EVP_PKEY_CTX
*EVP_PKEY_CTX_dup(EVP_PKEY_CTX
*pctx
)
271 if (!pctx
->pmeth
|| !pctx
->pmeth
->copy
)
273 #ifndef OPENSSL_NO_ENGINE
274 /* Make sure it's safe to copy a pkey context using an ENGINE */
275 if (pctx
->engine
&& !ENGINE_init(pctx
->engine
)) {
276 EVPerr(EVP_F_EVP_PKEY_CTX_DUP
, ERR_R_ENGINE_LIB
);
280 rctx
= OPENSSL_malloc(sizeof(*rctx
));
284 rctx
->pmeth
= pctx
->pmeth
;
285 #ifndef OPENSSL_NO_ENGINE
286 rctx
->engine
= pctx
->engine
;
290 CRYPTO_add(&pctx
->pkey
->references
, 1, CRYPTO_LOCK_EVP_PKEY
);
292 rctx
->pkey
= pctx
->pkey
;
295 CRYPTO_add(&pctx
->peerkey
->references
, 1, CRYPTO_LOCK_EVP_PKEY
);
297 rctx
->peerkey
= pctx
->peerkey
;
300 rctx
->app_data
= NULL
;
301 rctx
->operation
= pctx
->operation
;
303 if (pctx
->pmeth
->copy(rctx
, pctx
) > 0)
306 EVP_PKEY_CTX_free(rctx
);
311 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD
*pmeth
)
313 if (app_pkey_methods
== NULL
) {
314 app_pkey_methods
= sk_EVP_PKEY_METHOD_new(pmeth_cmp
);
315 if (app_pkey_methods
== NULL
)
318 if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods
, pmeth
))
320 sk_EVP_PKEY_METHOD_sort(app_pkey_methods
);
324 void EVP_PKEY_CTX_free(EVP_PKEY_CTX
*ctx
)
328 if (ctx
->pmeth
&& ctx
->pmeth
->cleanup
)
329 ctx
->pmeth
->cleanup(ctx
);
330 EVP_PKEY_free(ctx
->pkey
);
331 EVP_PKEY_free(ctx
->peerkey
);
332 #ifndef OPENSSL_NO_ENGINE
335 * The EVP_PKEY_CTX we used belongs to an ENGINE, release the
336 * functional reference we held for this reason.
338 ENGINE_finish(ctx
->engine
);
343 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX
*ctx
, int keytype
, int optype
,
344 int cmd
, int p1
, void *p2
)
347 if (!ctx
|| !ctx
->pmeth
|| !ctx
->pmeth
->ctrl
) {
348 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_COMMAND_NOT_SUPPORTED
);
351 if ((keytype
!= -1) && (ctx
->pmeth
->pkey_id
!= keytype
))
354 if (ctx
->operation
== EVP_PKEY_OP_UNDEFINED
) {
355 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_NO_OPERATION_SET
);
359 if ((optype
!= -1) && !(ctx
->operation
& optype
)) {
360 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_INVALID_OPERATION
);
364 ret
= ctx
->pmeth
->ctrl(ctx
, cmd
, p1
, p2
);
367 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_COMMAND_NOT_SUPPORTED
);
373 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX
*ctx
,
374 const char *name
, const char *value
)
376 if (!ctx
|| !ctx
->pmeth
|| !ctx
->pmeth
->ctrl_str
) {
377 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR
, EVP_R_COMMAND_NOT_SUPPORTED
);
380 if (strcmp(name
, "digest") == 0) {
382 if (value
== NULL
|| (md
= EVP_get_digestbyname(value
)) == NULL
) {
383 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR
, EVP_R_INVALID_DIGEST
);
386 return EVP_PKEY_CTX_set_signature_md(ctx
, md
);
388 return ctx
->pmeth
->ctrl_str(ctx
, name
, value
);
391 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX
*ctx
)
393 return ctx
->operation
;
396 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX
*ctx
, int *dat
, int datlen
)
398 ctx
->keygen_info
= dat
;
399 ctx
->keygen_info_count
= datlen
;
402 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX
*ctx
, void *data
)
407 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX
*ctx
)
412 EVP_PKEY
*EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX
*ctx
)
417 EVP_PKEY
*EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX
*ctx
)
422 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX
*ctx
, void *data
)
424 ctx
->app_data
= data
;
427 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX
*ctx
)
429 return ctx
->app_data
;
432 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD
*pmeth
,
433 int (*init
) (EVP_PKEY_CTX
*ctx
))
438 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD
*pmeth
,
439 int (*copy
) (EVP_PKEY_CTX
*dst
,
445 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD
*pmeth
,
446 void (*cleanup
) (EVP_PKEY_CTX
*ctx
))
448 pmeth
->cleanup
= cleanup
;
451 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD
*pmeth
,
452 int (*paramgen_init
) (EVP_PKEY_CTX
*ctx
),
453 int (*paramgen
) (EVP_PKEY_CTX
*ctx
,
456 pmeth
->paramgen_init
= paramgen_init
;
457 pmeth
->paramgen
= paramgen
;
460 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD
*pmeth
,
461 int (*keygen_init
) (EVP_PKEY_CTX
*ctx
),
462 int (*keygen
) (EVP_PKEY_CTX
*ctx
,
465 pmeth
->keygen_init
= keygen_init
;
466 pmeth
->keygen
= keygen
;
469 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD
*pmeth
,
470 int (*sign_init
) (EVP_PKEY_CTX
*ctx
),
471 int (*sign
) (EVP_PKEY_CTX
*ctx
,
472 unsigned char *sig
, size_t *siglen
,
473 const unsigned char *tbs
,
476 pmeth
->sign_init
= sign_init
;
480 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD
*pmeth
,
481 int (*verify_init
) (EVP_PKEY_CTX
*ctx
),
482 int (*verify
) (EVP_PKEY_CTX
*ctx
,
483 const unsigned char *sig
,
485 const unsigned char *tbs
,
488 pmeth
->verify_init
= verify_init
;
489 pmeth
->verify
= verify
;
492 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD
*pmeth
,
493 int (*verify_recover_init
) (EVP_PKEY_CTX
495 int (*verify_recover
) (EVP_PKEY_CTX
504 pmeth
->verify_recover_init
= verify_recover_init
;
505 pmeth
->verify_recover
= verify_recover
;
508 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD
*pmeth
,
509 int (*signctx_init
) (EVP_PKEY_CTX
*ctx
,
511 int (*signctx
) (EVP_PKEY_CTX
*ctx
,
516 pmeth
->signctx_init
= signctx_init
;
517 pmeth
->signctx
= signctx
;
520 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD
*pmeth
,
521 int (*verifyctx_init
) (EVP_PKEY_CTX
*ctx
,
523 int (*verifyctx
) (EVP_PKEY_CTX
*ctx
,
524 const unsigned char *sig
,
528 pmeth
->verifyctx_init
= verifyctx_init
;
529 pmeth
->verifyctx
= verifyctx
;
532 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD
*pmeth
,
533 int (*encrypt_init
) (EVP_PKEY_CTX
*ctx
),
534 int (*encryptfn
) (EVP_PKEY_CTX
*ctx
,
537 const unsigned char *in
,
540 pmeth
->encrypt_init
= encrypt_init
;
541 pmeth
->encrypt
= encryptfn
;
544 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD
*pmeth
,
545 int (*decrypt_init
) (EVP_PKEY_CTX
*ctx
),
546 int (*decrypt
) (EVP_PKEY_CTX
*ctx
,
549 const unsigned char *in
,
552 pmeth
->decrypt_init
= decrypt_init
;
553 pmeth
->decrypt
= decrypt
;
556 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD
*pmeth
,
557 int (*derive_init
) (EVP_PKEY_CTX
*ctx
),
558 int (*derive
) (EVP_PKEY_CTX
*ctx
,
562 pmeth
->derive_init
= derive_init
;
563 pmeth
->derive
= derive
;
566 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD
*pmeth
,
567 int (*ctrl
) (EVP_PKEY_CTX
*ctx
, int type
, int p1
,
569 int (*ctrl_str
) (EVP_PKEY_CTX
*ctx
,
574 pmeth
->ctrl_str
= ctrl_str
;
577 void EVP_PKEY_meth_get_init(EVP_PKEY_METHOD
*pmeth
,
578 int (**pinit
) (EVP_PKEY_CTX
*ctx
))
580 *pinit
= pmeth
->init
;
583 void EVP_PKEY_meth_get_copy(EVP_PKEY_METHOD
*pmeth
,
584 int (**pcopy
) (EVP_PKEY_CTX
*dst
,
587 *pcopy
= pmeth
->copy
;
590 void EVP_PKEY_meth_get_cleanup(EVP_PKEY_METHOD
*pmeth
,
591 void (**pcleanup
) (EVP_PKEY_CTX
*ctx
))
593 *pcleanup
= pmeth
->cleanup
;
596 void EVP_PKEY_meth_get_paramgen(EVP_PKEY_METHOD
*pmeth
,
597 int (**pparamgen_init
) (EVP_PKEY_CTX
*ctx
),
598 int (**pparamgen
) (EVP_PKEY_CTX
*ctx
,
602 *pparamgen_init
= pmeth
->paramgen_init
;
604 *pparamgen
= pmeth
->paramgen
;
607 void EVP_PKEY_meth_get_keygen(EVP_PKEY_METHOD
*pmeth
,
608 int (**pkeygen_init
) (EVP_PKEY_CTX
*ctx
),
609 int (**pkeygen
) (EVP_PKEY_CTX
*ctx
,
613 *pkeygen_init
= pmeth
->keygen_init
;
615 *pkeygen
= pmeth
->keygen
;
618 void EVP_PKEY_meth_get_sign(EVP_PKEY_METHOD
*pmeth
,
619 int (**psign_init
) (EVP_PKEY_CTX
*ctx
),
620 int (**psign
) (EVP_PKEY_CTX
*ctx
,
621 unsigned char *sig
, size_t *siglen
,
622 const unsigned char *tbs
,
626 *psign_init
= pmeth
->sign_init
;
628 *psign
= pmeth
->sign
;
631 void EVP_PKEY_meth_get_verify(EVP_PKEY_METHOD
*pmeth
,
632 int (**pverify_init
) (EVP_PKEY_CTX
*ctx
),
633 int (**pverify
) (EVP_PKEY_CTX
*ctx
,
634 const unsigned char *sig
,
636 const unsigned char *tbs
,
640 *pverify_init
= pmeth
->verify_init
;
642 *pverify
= pmeth
->verify
;
645 void EVP_PKEY_meth_get_verify_recover(EVP_PKEY_METHOD
*pmeth
,
646 int (**pverify_recover_init
) (EVP_PKEY_CTX
648 int (**pverify_recover
) (EVP_PKEY_CTX
657 if (pverify_recover_init
)
658 *pverify_recover_init
= pmeth
->verify_recover_init
;
660 *pverify_recover
= pmeth
->verify_recover
;
663 void EVP_PKEY_meth_get_signctx(EVP_PKEY_METHOD
*pmeth
,
664 int (**psignctx_init
) (EVP_PKEY_CTX
*ctx
,
666 int (**psignctx
) (EVP_PKEY_CTX
*ctx
,
672 *psignctx_init
= pmeth
->signctx_init
;
674 *psignctx
= pmeth
->signctx
;
677 void EVP_PKEY_meth_get_verifyctx(EVP_PKEY_METHOD
*pmeth
,
678 int (**pverifyctx_init
) (EVP_PKEY_CTX
*ctx
,
680 int (**pverifyctx
) (EVP_PKEY_CTX
*ctx
,
681 const unsigned char *sig
,
686 *pverifyctx_init
= pmeth
->verifyctx_init
;
688 *pverifyctx
= pmeth
->verifyctx
;
691 void EVP_PKEY_meth_get_encrypt(EVP_PKEY_METHOD
*pmeth
,
692 int (**pencrypt_init
) (EVP_PKEY_CTX
*ctx
),
693 int (**pencryptfn
) (EVP_PKEY_CTX
*ctx
,
696 const unsigned char *in
,
700 *pencrypt_init
= pmeth
->encrypt_init
;
702 *pencryptfn
= pmeth
->encrypt
;
705 void EVP_PKEY_meth_get_decrypt(EVP_PKEY_METHOD
*pmeth
,
706 int (**pdecrypt_init
) (EVP_PKEY_CTX
*ctx
),
707 int (**pdecrypt
) (EVP_PKEY_CTX
*ctx
,
710 const unsigned char *in
,
714 *pdecrypt_init
= pmeth
->decrypt_init
;
716 *pdecrypt
= pmeth
->decrypt
;
719 void EVP_PKEY_meth_get_derive(EVP_PKEY_METHOD
*pmeth
,
720 int (**pderive_init
) (EVP_PKEY_CTX
*ctx
),
721 int (**pderive
) (EVP_PKEY_CTX
*ctx
,
726 *pderive_init
= pmeth
->derive_init
;
728 *pderive
= pmeth
->derive
;
731 void EVP_PKEY_meth_get_ctrl(EVP_PKEY_METHOD
*pmeth
,
732 int (**pctrl
) (EVP_PKEY_CTX
*ctx
, int type
, int p1
,
734 int (**pctrl_str
) (EVP_PKEY_CTX
*ctx
,
739 *pctrl
= pmeth
->ctrl
;
741 *pctrl_str
= pmeth
->ctrl_str
;