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).
61 #include "internal/cryptlib.h"
62 #ifndef OPENSSL_NO_ENGINE
63 # include <openssl/engine.h>
65 #include <openssl/evp.h>
66 #include "internal/asn1_int.h"
67 #include "internal/evp_int.h"
69 typedef int sk_cmp_fn_type(const char *const *a
, const char *const *b
);
71 static STACK_OF(EVP_PKEY_METHOD
) *app_pkey_methods
= NULL
;
73 static const EVP_PKEY_METHOD
*standard_methods
[] = {
74 #ifndef OPENSSL_NO_RSA
80 #ifndef OPENSSL_NO_DSA
94 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD
*, const EVP_PKEY_METHOD
*,
97 static int pmeth_cmp(const EVP_PKEY_METHOD
*const *a
,
98 const EVP_PKEY_METHOD
*const *b
)
100 return ((*a
)->pkey_id
- (*b
)->pkey_id
);
103 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD
*, const EVP_PKEY_METHOD
*,
106 const EVP_PKEY_METHOD
*EVP_PKEY_meth_find(int type
)
109 const EVP_PKEY_METHOD
*t
= &tmp
, **ret
;
111 if (app_pkey_methods
) {
113 idx
= sk_EVP_PKEY_METHOD_find(app_pkey_methods
, &tmp
);
115 return sk_EVP_PKEY_METHOD_value(app_pkey_methods
, idx
);
117 ret
= OBJ_bsearch_pmeth(&t
, standard_methods
,
118 sizeof(standard_methods
) /
119 sizeof(EVP_PKEY_METHOD
*));
125 static EVP_PKEY_CTX
*int_ctx_new(EVP_PKEY
*pkey
, ENGINE
*e
, int id
)
128 const EVP_PKEY_METHOD
*pmeth
;
130 if (!pkey
|| !pkey
->ameth
)
132 id
= pkey
->ameth
->pkey_id
;
134 #ifndef OPENSSL_NO_ENGINE
135 if (pkey
&& pkey
->engine
)
137 /* Try to find an ENGINE which implements this method */
139 if (!ENGINE_init(e
)) {
140 EVPerr(EVP_F_INT_CTX_NEW
, ERR_R_ENGINE_LIB
);
144 e
= ENGINE_get_pkey_meth_engine(id
);
147 * If an ENGINE handled this method look it up. Othewise use internal
152 pmeth
= ENGINE_get_pkey_meth(e
, id
);
155 pmeth
= EVP_PKEY_meth_find(id
);
158 EVPerr(EVP_F_INT_CTX_NEW
, EVP_R_UNSUPPORTED_ALGORITHM
);
162 ret
= OPENSSL_zalloc(sizeof(*ret
));
164 #ifndef OPENSSL_NO_ENGINE
168 EVPerr(EVP_F_INT_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
173 ret
->operation
= EVP_PKEY_OP_UNDEFINED
;
176 CRYPTO_add(&pkey
->references
, 1, CRYPTO_LOCK_EVP_PKEY
);
179 if (pmeth
->init(ret
) <= 0) {
180 EVP_PKEY_CTX_free(ret
);
188 EVP_PKEY_METHOD
*EVP_PKEY_meth_new(int id
, int flags
)
190 EVP_PKEY_METHOD
*pmeth
;
192 pmeth
= OPENSSL_zalloc(sizeof(*pmeth
));
197 pmeth
->flags
= flags
| EVP_PKEY_FLAG_DYNAMIC
;
201 void EVP_PKEY_meth_get0_info(int *ppkey_id
, int *pflags
,
202 const EVP_PKEY_METHOD
*meth
)
205 *ppkey_id
= meth
->pkey_id
;
207 *pflags
= meth
->flags
;
210 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD
*dst
, const EVP_PKEY_METHOD
*src
)
213 dst
->init
= src
->init
;
214 dst
->copy
= src
->copy
;
215 dst
->cleanup
= src
->cleanup
;
217 dst
->paramgen_init
= src
->paramgen_init
;
218 dst
->paramgen
= src
->paramgen
;
220 dst
->keygen_init
= src
->keygen_init
;
221 dst
->keygen
= src
->keygen
;
223 dst
->sign_init
= src
->sign_init
;
224 dst
->sign
= src
->sign
;
226 dst
->verify_init
= src
->verify_init
;
227 dst
->verify
= src
->verify
;
229 dst
->verify_recover_init
= src
->verify_recover_init
;
230 dst
->verify_recover
= src
->verify_recover
;
232 dst
->signctx_init
= src
->signctx_init
;
233 dst
->signctx
= src
->signctx
;
235 dst
->verifyctx_init
= src
->verifyctx_init
;
236 dst
->verifyctx
= src
->verifyctx
;
238 dst
->encrypt_init
= src
->encrypt_init
;
239 dst
->encrypt
= src
->encrypt
;
241 dst
->decrypt_init
= src
->decrypt_init
;
242 dst
->decrypt
= src
->decrypt
;
244 dst
->derive_init
= src
->derive_init
;
245 dst
->derive
= src
->derive
;
247 dst
->ctrl
= src
->ctrl
;
248 dst
->ctrl_str
= src
->ctrl_str
;
251 void EVP_PKEY_meth_free(EVP_PKEY_METHOD
*pmeth
)
253 if (pmeth
&& (pmeth
->flags
& EVP_PKEY_FLAG_DYNAMIC
))
257 EVP_PKEY_CTX
*EVP_PKEY_CTX_new(EVP_PKEY
*pkey
, ENGINE
*e
)
259 return int_ctx_new(pkey
, e
, -1);
262 EVP_PKEY_CTX
*EVP_PKEY_CTX_new_id(int id
, ENGINE
*e
)
264 return int_ctx_new(NULL
, e
, id
);
267 EVP_PKEY_CTX
*EVP_PKEY_CTX_dup(EVP_PKEY_CTX
*pctx
)
270 if (!pctx
->pmeth
|| !pctx
->pmeth
->copy
)
272 #ifndef OPENSSL_NO_ENGINE
273 /* Make sure it's safe to copy a pkey context using an ENGINE */
274 if (pctx
->engine
&& !ENGINE_init(pctx
->engine
)) {
275 EVPerr(EVP_F_EVP_PKEY_CTX_DUP
, ERR_R_ENGINE_LIB
);
279 rctx
= OPENSSL_malloc(sizeof(*rctx
));
283 rctx
->pmeth
= pctx
->pmeth
;
284 #ifndef OPENSSL_NO_ENGINE
285 rctx
->engine
= pctx
->engine
;
289 CRYPTO_add(&pctx
->pkey
->references
, 1, CRYPTO_LOCK_EVP_PKEY
);
291 rctx
->pkey
= pctx
->pkey
;
294 CRYPTO_add(&pctx
->peerkey
->references
, 1, CRYPTO_LOCK_EVP_PKEY
);
296 rctx
->peerkey
= pctx
->peerkey
;
299 rctx
->app_data
= NULL
;
300 rctx
->operation
= pctx
->operation
;
302 if (pctx
->pmeth
->copy(rctx
, pctx
) > 0)
305 EVP_PKEY_CTX_free(rctx
);
310 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD
*pmeth
)
312 if (app_pkey_methods
== NULL
) {
313 app_pkey_methods
= sk_EVP_PKEY_METHOD_new(pmeth_cmp
);
314 if (app_pkey_methods
== NULL
)
317 if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods
, pmeth
))
319 sk_EVP_PKEY_METHOD_sort(app_pkey_methods
);
323 void EVP_PKEY_CTX_free(EVP_PKEY_CTX
*ctx
)
327 if (ctx
->pmeth
&& ctx
->pmeth
->cleanup
)
328 ctx
->pmeth
->cleanup(ctx
);
329 EVP_PKEY_free(ctx
->pkey
);
330 EVP_PKEY_free(ctx
->peerkey
);
331 #ifndef OPENSSL_NO_ENGINE
334 * The EVP_PKEY_CTX we used belongs to an ENGINE, release the
335 * functional reference we held for this reason.
337 ENGINE_finish(ctx
->engine
);
342 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX
*ctx
, int keytype
, int optype
,
343 int cmd
, int p1
, void *p2
)
346 if (!ctx
|| !ctx
->pmeth
|| !ctx
->pmeth
->ctrl
) {
347 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_COMMAND_NOT_SUPPORTED
);
350 if ((keytype
!= -1) && (ctx
->pmeth
->pkey_id
!= keytype
))
353 if (ctx
->operation
== EVP_PKEY_OP_UNDEFINED
) {
354 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_NO_OPERATION_SET
);
358 if ((optype
!= -1) && !(ctx
->operation
& optype
)) {
359 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_INVALID_OPERATION
);
363 ret
= ctx
->pmeth
->ctrl(ctx
, cmd
, p1
, p2
);
366 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_COMMAND_NOT_SUPPORTED
);
372 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX
*ctx
,
373 const char *name
, const char *value
)
375 if (!ctx
|| !ctx
->pmeth
|| !ctx
->pmeth
->ctrl_str
) {
376 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR
, EVP_R_COMMAND_NOT_SUPPORTED
);
379 if (strcmp(name
, "digest") == 0) {
381 if (value
== NULL
|| (md
= EVP_get_digestbyname(value
)) == NULL
) {
382 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR
, EVP_R_INVALID_DIGEST
);
385 return EVP_PKEY_CTX_set_signature_md(ctx
, md
);
387 return ctx
->pmeth
->ctrl_str(ctx
, name
, value
);
390 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX
*ctx
)
392 return ctx
->operation
;
395 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX
*ctx
, int *dat
, int datlen
)
397 ctx
->keygen_info
= dat
;
398 ctx
->keygen_info_count
= datlen
;
401 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX
*ctx
, void *data
)
406 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX
*ctx
)
411 EVP_PKEY
*EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX
*ctx
)
416 EVP_PKEY
*EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX
*ctx
)
421 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX
*ctx
, void *data
)
423 ctx
->app_data
= data
;
426 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX
*ctx
)
428 return ctx
->app_data
;
431 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD
*pmeth
,
432 int (*init
) (EVP_PKEY_CTX
*ctx
))
437 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD
*pmeth
,
438 int (*copy
) (EVP_PKEY_CTX
*dst
,
444 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD
*pmeth
,
445 void (*cleanup
) (EVP_PKEY_CTX
*ctx
))
447 pmeth
->cleanup
= cleanup
;
450 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD
*pmeth
,
451 int (*paramgen_init
) (EVP_PKEY_CTX
*ctx
),
452 int (*paramgen
) (EVP_PKEY_CTX
*ctx
,
455 pmeth
->paramgen_init
= paramgen_init
;
456 pmeth
->paramgen
= paramgen
;
459 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD
*pmeth
,
460 int (*keygen_init
) (EVP_PKEY_CTX
*ctx
),
461 int (*keygen
) (EVP_PKEY_CTX
*ctx
,
464 pmeth
->keygen_init
= keygen_init
;
465 pmeth
->keygen
= keygen
;
468 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD
*pmeth
,
469 int (*sign_init
) (EVP_PKEY_CTX
*ctx
),
470 int (*sign
) (EVP_PKEY_CTX
*ctx
,
471 unsigned char *sig
, size_t *siglen
,
472 const unsigned char *tbs
,
475 pmeth
->sign_init
= sign_init
;
479 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD
*pmeth
,
480 int (*verify_init
) (EVP_PKEY_CTX
*ctx
),
481 int (*verify
) (EVP_PKEY_CTX
*ctx
,
482 const unsigned char *sig
,
484 const unsigned char *tbs
,
487 pmeth
->verify_init
= verify_init
;
488 pmeth
->verify
= verify
;
491 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD
*pmeth
,
492 int (*verify_recover_init
) (EVP_PKEY_CTX
494 int (*verify_recover
) (EVP_PKEY_CTX
503 pmeth
->verify_recover_init
= verify_recover_init
;
504 pmeth
->verify_recover
= verify_recover
;
507 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD
*pmeth
,
508 int (*signctx_init
) (EVP_PKEY_CTX
*ctx
,
510 int (*signctx
) (EVP_PKEY_CTX
*ctx
,
515 pmeth
->signctx_init
= signctx_init
;
516 pmeth
->signctx
= signctx
;
519 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD
*pmeth
,
520 int (*verifyctx_init
) (EVP_PKEY_CTX
*ctx
,
522 int (*verifyctx
) (EVP_PKEY_CTX
*ctx
,
523 const unsigned char *sig
,
527 pmeth
->verifyctx_init
= verifyctx_init
;
528 pmeth
->verifyctx
= verifyctx
;
531 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD
*pmeth
,
532 int (*encrypt_init
) (EVP_PKEY_CTX
*ctx
),
533 int (*encryptfn
) (EVP_PKEY_CTX
*ctx
,
536 const unsigned char *in
,
539 pmeth
->encrypt_init
= encrypt_init
;
540 pmeth
->encrypt
= encryptfn
;
543 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD
*pmeth
,
544 int (*decrypt_init
) (EVP_PKEY_CTX
*ctx
),
545 int (*decrypt
) (EVP_PKEY_CTX
*ctx
,
548 const unsigned char *in
,
551 pmeth
->decrypt_init
= decrypt_init
;
552 pmeth
->decrypt
= decrypt
;
555 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD
*pmeth
,
556 int (*derive_init
) (EVP_PKEY_CTX
*ctx
),
557 int (*derive
) (EVP_PKEY_CTX
*ctx
,
561 pmeth
->derive_init
= derive_init
;
562 pmeth
->derive
= derive
;
565 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD
*pmeth
,
566 int (*ctrl
) (EVP_PKEY_CTX
*ctx
, int type
, int p1
,
568 int (*ctrl_str
) (EVP_PKEY_CTX
*ctx
,
573 pmeth
->ctrl_str
= ctrl_str
;
576 void EVP_PKEY_meth_get_init(EVP_PKEY_METHOD
*pmeth
,
577 int (**pinit
) (EVP_PKEY_CTX
*ctx
))
579 *pinit
= pmeth
->init
;
582 void EVP_PKEY_meth_get_copy(EVP_PKEY_METHOD
*pmeth
,
583 int (**pcopy
) (EVP_PKEY_CTX
*dst
,
586 *pcopy
= pmeth
->copy
;
589 void EVP_PKEY_meth_get_cleanup(EVP_PKEY_METHOD
*pmeth
,
590 void (**pcleanup
) (EVP_PKEY_CTX
*ctx
))
592 *pcleanup
= pmeth
->cleanup
;
595 void EVP_PKEY_meth_get_paramgen(EVP_PKEY_METHOD
*pmeth
,
596 int (**pparamgen_init
) (EVP_PKEY_CTX
*ctx
),
597 int (**pparamgen
) (EVP_PKEY_CTX
*ctx
,
601 *pparamgen_init
= pmeth
->paramgen_init
;
603 *pparamgen
= pmeth
->paramgen
;
606 void EVP_PKEY_meth_get_keygen(EVP_PKEY_METHOD
*pmeth
,
607 int (**pkeygen_init
) (EVP_PKEY_CTX
*ctx
),
608 int (**pkeygen
) (EVP_PKEY_CTX
*ctx
,
612 *pkeygen_init
= pmeth
->keygen_init
;
614 *pkeygen
= pmeth
->keygen
;
617 void EVP_PKEY_meth_get_sign(EVP_PKEY_METHOD
*pmeth
,
618 int (**psign_init
) (EVP_PKEY_CTX
*ctx
),
619 int (**psign
) (EVP_PKEY_CTX
*ctx
,
620 unsigned char *sig
, size_t *siglen
,
621 const unsigned char *tbs
,
625 *psign_init
= pmeth
->sign_init
;
627 *psign
= pmeth
->sign
;
630 void EVP_PKEY_meth_get_verify(EVP_PKEY_METHOD
*pmeth
,
631 int (**pverify_init
) (EVP_PKEY_CTX
*ctx
),
632 int (**pverify
) (EVP_PKEY_CTX
*ctx
,
633 const unsigned char *sig
,
635 const unsigned char *tbs
,
639 *pverify_init
= pmeth
->verify_init
;
641 *pverify
= pmeth
->verify
;
644 void EVP_PKEY_meth_get_verify_recover(EVP_PKEY_METHOD
*pmeth
,
645 int (**pverify_recover_init
) (EVP_PKEY_CTX
647 int (**pverify_recover
) (EVP_PKEY_CTX
656 if (pverify_recover_init
)
657 *pverify_recover_init
= pmeth
->verify_recover_init
;
659 *pverify_recover
= pmeth
->verify_recover
;
662 void EVP_PKEY_meth_get_signctx(EVP_PKEY_METHOD
*pmeth
,
663 int (**psignctx_init
) (EVP_PKEY_CTX
*ctx
,
665 int (**psignctx
) (EVP_PKEY_CTX
*ctx
,
671 *psignctx_init
= pmeth
->signctx_init
;
673 *psignctx
= pmeth
->signctx
;
676 void EVP_PKEY_meth_get_verifyctx(EVP_PKEY_METHOD
*pmeth
,
677 int (**pverifyctx_init
) (EVP_PKEY_CTX
*ctx
,
679 int (**pverifyctx
) (EVP_PKEY_CTX
*ctx
,
680 const unsigned char *sig
,
685 *pverifyctx_init
= pmeth
->verifyctx_init
;
687 *pverifyctx
= pmeth
->verifyctx
;
690 void EVP_PKEY_meth_get_encrypt(EVP_PKEY_METHOD
*pmeth
,
691 int (**pencrypt_init
) (EVP_PKEY_CTX
*ctx
),
692 int (**pencryptfn
) (EVP_PKEY_CTX
*ctx
,
695 const unsigned char *in
,
699 *pencrypt_init
= pmeth
->encrypt_init
;
701 *pencryptfn
= pmeth
->encrypt
;
704 void EVP_PKEY_meth_get_decrypt(EVP_PKEY_METHOD
*pmeth
,
705 int (**pdecrypt_init
) (EVP_PKEY_CTX
*ctx
),
706 int (**pdecrypt
) (EVP_PKEY_CTX
*ctx
,
709 const unsigned char *in
,
713 *pdecrypt_init
= pmeth
->decrypt_init
;
715 *pdecrypt
= pmeth
->decrypt
;
718 void EVP_PKEY_meth_get_derive(EVP_PKEY_METHOD
*pmeth
,
719 int (**pderive_init
) (EVP_PKEY_CTX
*ctx
),
720 int (**pderive
) (EVP_PKEY_CTX
*ctx
,
725 *pderive_init
= pmeth
->derive_init
;
727 *pderive
= pmeth
->derive
;
730 void EVP_PKEY_meth_get_ctrl(EVP_PKEY_METHOD
*pmeth
,
731 int (**pctrl
) (EVP_PKEY_CTX
*ctx
, int type
, int p1
,
733 int (**pctrl_str
) (EVP_PKEY_CTX
*ctx
,
738 *pctrl
= pmeth
->ctrl
;
740 *pctrl_str
= pmeth
->ctrl_str
;