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 "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 DECLARE_STACK_OF(EVP_PKEY_METHOD)
72 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
74 static const EVP_PKEY_METHOD *standard_methods[] = {
75 #ifndef OPENSSL_NO_RSA
81 #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;