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. Otherwise 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
167 EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
172 ret->operation = EVP_PKEY_OP_UNDEFINED;
175 CRYPTO_add(&pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
178 if (pmeth->init(ret) <= 0) {
179 EVP_PKEY_CTX_free(ret);
187 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
189 EVP_PKEY_METHOD *pmeth;
191 pmeth = OPENSSL_zalloc(sizeof(*pmeth));
196 pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
200 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
201 const EVP_PKEY_METHOD *meth)
204 *ppkey_id = meth->pkey_id;
206 *pflags = meth->flags;
209 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
212 dst->init = src->init;
213 dst->copy = src->copy;
214 dst->cleanup = src->cleanup;
216 dst->paramgen_init = src->paramgen_init;
217 dst->paramgen = src->paramgen;
219 dst->keygen_init = src->keygen_init;
220 dst->keygen = src->keygen;
222 dst->sign_init = src->sign_init;
223 dst->sign = src->sign;
225 dst->verify_init = src->verify_init;
226 dst->verify = src->verify;
228 dst->verify_recover_init = src->verify_recover_init;
229 dst->verify_recover = src->verify_recover;
231 dst->signctx_init = src->signctx_init;
232 dst->signctx = src->signctx;
234 dst->verifyctx_init = src->verifyctx_init;
235 dst->verifyctx = src->verifyctx;
237 dst->encrypt_init = src->encrypt_init;
238 dst->encrypt = src->encrypt;
240 dst->decrypt_init = src->decrypt_init;
241 dst->decrypt = src->decrypt;
243 dst->derive_init = src->derive_init;
244 dst->derive = src->derive;
246 dst->ctrl = src->ctrl;
247 dst->ctrl_str = src->ctrl_str;
250 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
252 if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
256 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
258 return int_ctx_new(pkey, e, -1);
261 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
263 return int_ctx_new(NULL, e, id);
266 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *pctx)
269 if (!pctx->pmeth || !pctx->pmeth->copy)
271 #ifndef OPENSSL_NO_ENGINE
272 /* Make sure it's safe to copy a pkey context using an ENGINE */
273 if (pctx->engine && !ENGINE_init(pctx->engine)) {
274 EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
278 rctx = OPENSSL_malloc(sizeof(*rctx));
282 rctx->pmeth = pctx->pmeth;
283 #ifndef OPENSSL_NO_ENGINE
284 rctx->engine = pctx->engine;
288 CRYPTO_add(&pctx->pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
290 rctx->pkey = pctx->pkey;
293 CRYPTO_add(&pctx->peerkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
295 rctx->peerkey = pctx->peerkey;
298 rctx->app_data = NULL;
299 rctx->operation = pctx->operation;
301 if (pctx->pmeth->copy(rctx, pctx) > 0)
304 EVP_PKEY_CTX_free(rctx);
309 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
311 if (app_pkey_methods == NULL) {
312 app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
313 if (app_pkey_methods == NULL)
316 if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth))
318 sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
322 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
326 if (ctx->pmeth && ctx->pmeth->cleanup)
327 ctx->pmeth->cleanup(ctx);
328 EVP_PKEY_free(ctx->pkey);
329 EVP_PKEY_free(ctx->peerkey);
330 #ifndef OPENSSL_NO_ENGINE
331 ENGINE_finish(ctx->engine);
336 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
337 int cmd, int p1, void *p2)
340 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl) {
341 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
344 if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
347 if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
348 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
352 if ((optype != -1) && !(ctx->operation & optype)) {
353 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
357 ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
360 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
366 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
367 const char *name, const char *value)
369 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
370 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
373 if (strcmp(name, "digest") == 0) {
375 if (value == NULL || (md = EVP_get_digestbyname(value)) == NULL) {
376 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_INVALID_DIGEST);
379 return EVP_PKEY_CTX_set_signature_md(ctx, md);
381 return ctx->pmeth->ctrl_str(ctx, name, value);
384 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
386 return ctx->operation;
389 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
391 ctx->keygen_info = dat;
392 ctx->keygen_info_count = datlen;
395 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
400 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx)
405 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
410 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
415 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
417 ctx->app_data = data;
420 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
422 return ctx->app_data;
425 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
426 int (*init) (EVP_PKEY_CTX *ctx))
431 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
432 int (*copy) (EVP_PKEY_CTX *dst,
438 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
439 void (*cleanup) (EVP_PKEY_CTX *ctx))
441 pmeth->cleanup = cleanup;
444 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
445 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
446 int (*paramgen) (EVP_PKEY_CTX *ctx,
449 pmeth->paramgen_init = paramgen_init;
450 pmeth->paramgen = paramgen;
453 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
454 int (*keygen_init) (EVP_PKEY_CTX *ctx),
455 int (*keygen) (EVP_PKEY_CTX *ctx,
458 pmeth->keygen_init = keygen_init;
459 pmeth->keygen = keygen;
462 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
463 int (*sign_init) (EVP_PKEY_CTX *ctx),
464 int (*sign) (EVP_PKEY_CTX *ctx,
465 unsigned char *sig, size_t *siglen,
466 const unsigned char *tbs,
469 pmeth->sign_init = sign_init;
473 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
474 int (*verify_init) (EVP_PKEY_CTX *ctx),
475 int (*verify) (EVP_PKEY_CTX *ctx,
476 const unsigned char *sig,
478 const unsigned char *tbs,
481 pmeth->verify_init = verify_init;
482 pmeth->verify = verify;
485 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
486 int (*verify_recover_init) (EVP_PKEY_CTX
488 int (*verify_recover) (EVP_PKEY_CTX
497 pmeth->verify_recover_init = verify_recover_init;
498 pmeth->verify_recover = verify_recover;
501 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
502 int (*signctx_init) (EVP_PKEY_CTX *ctx,
504 int (*signctx) (EVP_PKEY_CTX *ctx,
509 pmeth->signctx_init = signctx_init;
510 pmeth->signctx = signctx;
513 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
514 int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
516 int (*verifyctx) (EVP_PKEY_CTX *ctx,
517 const unsigned char *sig,
521 pmeth->verifyctx_init = verifyctx_init;
522 pmeth->verifyctx = verifyctx;
525 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
526 int (*encrypt_init) (EVP_PKEY_CTX *ctx),
527 int (*encryptfn) (EVP_PKEY_CTX *ctx,
530 const unsigned char *in,
533 pmeth->encrypt_init = encrypt_init;
534 pmeth->encrypt = encryptfn;
537 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
538 int (*decrypt_init) (EVP_PKEY_CTX *ctx),
539 int (*decrypt) (EVP_PKEY_CTX *ctx,
542 const unsigned char *in,
545 pmeth->decrypt_init = decrypt_init;
546 pmeth->decrypt = decrypt;
549 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
550 int (*derive_init) (EVP_PKEY_CTX *ctx),
551 int (*derive) (EVP_PKEY_CTX *ctx,
555 pmeth->derive_init = derive_init;
556 pmeth->derive = derive;
559 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
560 int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
562 int (*ctrl_str) (EVP_PKEY_CTX *ctx,
567 pmeth->ctrl_str = ctrl_str;
570 void EVP_PKEY_meth_get_init(EVP_PKEY_METHOD *pmeth,
571 int (**pinit) (EVP_PKEY_CTX *ctx))
573 *pinit = pmeth->init;
576 void EVP_PKEY_meth_get_copy(EVP_PKEY_METHOD *pmeth,
577 int (**pcopy) (EVP_PKEY_CTX *dst,
580 *pcopy = pmeth->copy;
583 void EVP_PKEY_meth_get_cleanup(EVP_PKEY_METHOD *pmeth,
584 void (**pcleanup) (EVP_PKEY_CTX *ctx))
586 *pcleanup = pmeth->cleanup;
589 void EVP_PKEY_meth_get_paramgen(EVP_PKEY_METHOD *pmeth,
590 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
591 int (**pparamgen) (EVP_PKEY_CTX *ctx,
595 *pparamgen_init = pmeth->paramgen_init;
597 *pparamgen = pmeth->paramgen;
600 void EVP_PKEY_meth_get_keygen(EVP_PKEY_METHOD *pmeth,
601 int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
602 int (**pkeygen) (EVP_PKEY_CTX *ctx,
606 *pkeygen_init = pmeth->keygen_init;
608 *pkeygen = pmeth->keygen;
611 void EVP_PKEY_meth_get_sign(EVP_PKEY_METHOD *pmeth,
612 int (**psign_init) (EVP_PKEY_CTX *ctx),
613 int (**psign) (EVP_PKEY_CTX *ctx,
614 unsigned char *sig, size_t *siglen,
615 const unsigned char *tbs,
619 *psign_init = pmeth->sign_init;
621 *psign = pmeth->sign;
624 void EVP_PKEY_meth_get_verify(EVP_PKEY_METHOD *pmeth,
625 int (**pverify_init) (EVP_PKEY_CTX *ctx),
626 int (**pverify) (EVP_PKEY_CTX *ctx,
627 const unsigned char *sig,
629 const unsigned char *tbs,
633 *pverify_init = pmeth->verify_init;
635 *pverify = pmeth->verify;
638 void EVP_PKEY_meth_get_verify_recover(EVP_PKEY_METHOD *pmeth,
639 int (**pverify_recover_init) (EVP_PKEY_CTX
641 int (**pverify_recover) (EVP_PKEY_CTX
650 if (pverify_recover_init)
651 *pverify_recover_init = pmeth->verify_recover_init;
653 *pverify_recover = pmeth->verify_recover;
656 void EVP_PKEY_meth_get_signctx(EVP_PKEY_METHOD *pmeth,
657 int (**psignctx_init) (EVP_PKEY_CTX *ctx,
659 int (**psignctx) (EVP_PKEY_CTX *ctx,
665 *psignctx_init = pmeth->signctx_init;
667 *psignctx = pmeth->signctx;
670 void EVP_PKEY_meth_get_verifyctx(EVP_PKEY_METHOD *pmeth,
671 int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
673 int (**pverifyctx) (EVP_PKEY_CTX *ctx,
674 const unsigned char *sig,
679 *pverifyctx_init = pmeth->verifyctx_init;
681 *pverifyctx = pmeth->verifyctx;
684 void EVP_PKEY_meth_get_encrypt(EVP_PKEY_METHOD *pmeth,
685 int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
686 int (**pencryptfn) (EVP_PKEY_CTX *ctx,
689 const unsigned char *in,
693 *pencrypt_init = pmeth->encrypt_init;
695 *pencryptfn = pmeth->encrypt;
698 void EVP_PKEY_meth_get_decrypt(EVP_PKEY_METHOD *pmeth,
699 int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
700 int (**pdecrypt) (EVP_PKEY_CTX *ctx,
703 const unsigned char *in,
707 *pdecrypt_init = pmeth->decrypt_init;
709 *pdecrypt = pmeth->decrypt;
712 void EVP_PKEY_meth_get_derive(EVP_PKEY_METHOD *pmeth,
713 int (**pderive_init) (EVP_PKEY_CTX *ctx),
714 int (**pderive) (EVP_PKEY_CTX *ctx,
719 *pderive_init = pmeth->derive_init;
721 *pderive = pmeth->derive;
724 void EVP_PKEY_meth_get_ctrl(EVP_PKEY_METHOD *pmeth,
725 int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
727 int (**pctrl_str) (EVP_PKEY_CTX *ctx,
732 *pctrl = pmeth->ctrl;
734 *pctrl_str = pmeth->ctrl_str;