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 #include <openssl/cmac.h>
64 #include <openssl/dh.h>
65 #include <openssl/dsa.h>
66 #include <openssl/evp.h>
67 #include <openssl/hmac.h>
68 #include <openssl/objects.h>
69 #include <openssl/rsa.h>
70 #ifndef OPENSSL_NO_ENGINE
71 # include <openssl/engine.h>
73 #include "internal/asn1_int.h"
74 #include "internal/evp_int.h"
76 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
78 DECLARE_STACK_OF(EVP_PKEY_METHOD)
79 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
81 static const EVP_PKEY_METHOD *standard_methods[] = {
82 #ifndef OPENSSL_NO_RSA
88 #ifndef OPENSSL_NO_DSA
101 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
104 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
105 const EVP_PKEY_METHOD *const *b)
107 return ((*a)->pkey_id - (*b)->pkey_id);
110 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
113 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
116 const EVP_PKEY_METHOD *t = &tmp, **ret;
118 if (app_pkey_methods) {
120 idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
122 return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
124 ret = OBJ_bsearch_pmeth(&t, standard_methods,
125 sizeof(standard_methods) /
126 sizeof(EVP_PKEY_METHOD *));
132 static EVP_PKEY_CTX *int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id)
135 const EVP_PKEY_METHOD *pmeth;
137 if (!pkey || !pkey->ameth)
139 id = pkey->ameth->pkey_id;
141 #ifndef OPENSSL_NO_ENGINE
142 if (pkey && pkey->engine)
144 /* Try to find an ENGINE which implements this method */
146 if (!ENGINE_init(e)) {
147 EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
151 e = ENGINE_get_pkey_meth_engine(id);
154 * If an ENGINE handled this method look it up. Othewise use internal
159 pmeth = ENGINE_get_pkey_meth(e, id);
162 pmeth = EVP_PKEY_meth_find(id);
165 EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
169 ret = OPENSSL_zalloc(sizeof(*ret));
171 #ifndef OPENSSL_NO_ENGINE
175 EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
180 ret->operation = EVP_PKEY_OP_UNDEFINED;
183 CRYPTO_add(&pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
186 if (pmeth->init(ret) <= 0) {
187 EVP_PKEY_CTX_free(ret);
195 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
197 EVP_PKEY_METHOD *pmeth;
199 pmeth = OPENSSL_zalloc(sizeof(*pmeth));
204 pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
208 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
209 const EVP_PKEY_METHOD *meth)
212 *ppkey_id = meth->pkey_id;
214 *pflags = meth->flags;
217 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
220 dst->init = src->init;
221 dst->copy = src->copy;
222 dst->cleanup = src->cleanup;
224 dst->paramgen_init = src->paramgen_init;
225 dst->paramgen = src->paramgen;
227 dst->keygen_init = src->keygen_init;
228 dst->keygen = src->keygen;
230 dst->sign_init = src->sign_init;
231 dst->sign = src->sign;
233 dst->verify_init = src->verify_init;
234 dst->verify = src->verify;
236 dst->verify_recover_init = src->verify_recover_init;
237 dst->verify_recover = src->verify_recover;
239 dst->signctx_init = src->signctx_init;
240 dst->signctx = src->signctx;
242 dst->verifyctx_init = src->verifyctx_init;
243 dst->verifyctx = src->verifyctx;
245 dst->encrypt_init = src->encrypt_init;
246 dst->encrypt = src->encrypt;
248 dst->decrypt_init = src->decrypt_init;
249 dst->decrypt = src->decrypt;
251 dst->derive_init = src->derive_init;
252 dst->derive = src->derive;
254 dst->ctrl = src->ctrl;
255 dst->ctrl_str = src->ctrl_str;
258 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
260 if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
264 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
266 return int_ctx_new(pkey, e, -1);
269 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
271 return int_ctx_new(NULL, e, id);
274 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *pctx)
277 if (!pctx->pmeth || !pctx->pmeth->copy)
279 #ifndef OPENSSL_NO_ENGINE
280 /* Make sure it's safe to copy a pkey context using an ENGINE */
281 if (pctx->engine && !ENGINE_init(pctx->engine)) {
282 EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
286 rctx = OPENSSL_malloc(sizeof(*rctx));
290 rctx->pmeth = pctx->pmeth;
291 #ifndef OPENSSL_NO_ENGINE
292 rctx->engine = pctx->engine;
296 CRYPTO_add(&pctx->pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
298 rctx->pkey = pctx->pkey;
301 CRYPTO_add(&pctx->peerkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
303 rctx->peerkey = pctx->peerkey;
306 rctx->app_data = NULL;
307 rctx->operation = pctx->operation;
309 if (pctx->pmeth->copy(rctx, pctx) > 0)
312 EVP_PKEY_CTX_free(rctx);
317 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
319 if (app_pkey_methods == NULL) {
320 app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
321 if (!app_pkey_methods)
324 if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth))
326 sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
330 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
334 if (ctx->pmeth && ctx->pmeth->cleanup)
335 ctx->pmeth->cleanup(ctx);
336 EVP_PKEY_free(ctx->pkey);
337 EVP_PKEY_free(ctx->peerkey);
338 #ifndef OPENSSL_NO_ENGINE
341 * The EVP_PKEY_CTX we used belongs to an ENGINE, release the
342 * functional reference we held for this reason.
344 ENGINE_finish(ctx->engine);
349 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
350 int cmd, int p1, void *p2)
353 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl) {
354 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
357 if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
360 if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
361 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
365 if ((optype != -1) && !(ctx->operation & optype)) {
366 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
370 ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
373 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
379 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
380 const char *name, const char *value)
382 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
383 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
386 if (strcmp(name, "digest") == 0) {
388 if (value == NULL || (md = EVP_get_digestbyname(value)) == NULL) {
389 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_INVALID_DIGEST);
392 return EVP_PKEY_CTX_set_signature_md(ctx, md);
394 return ctx->pmeth->ctrl_str(ctx, name, value);
397 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
399 return ctx->operation;
402 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
404 ctx->keygen_info = dat;
405 ctx->keygen_info_count = datlen;
408 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
413 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx)
418 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
423 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
428 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
430 ctx->app_data = data;
433 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
435 return ctx->app_data;
438 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
439 int (*init) (EVP_PKEY_CTX *ctx))
444 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
445 int (*copy) (EVP_PKEY_CTX *dst,
451 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
452 void (*cleanup) (EVP_PKEY_CTX *ctx))
454 pmeth->cleanup = cleanup;
457 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
458 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
459 int (*paramgen) (EVP_PKEY_CTX *ctx,
462 pmeth->paramgen_init = paramgen_init;
463 pmeth->paramgen = paramgen;
466 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
467 int (*keygen_init) (EVP_PKEY_CTX *ctx),
468 int (*keygen) (EVP_PKEY_CTX *ctx,
471 pmeth->keygen_init = keygen_init;
472 pmeth->keygen = keygen;
475 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
476 int (*sign_init) (EVP_PKEY_CTX *ctx),
477 int (*sign) (EVP_PKEY_CTX *ctx,
478 unsigned char *sig, size_t *siglen,
479 const unsigned char *tbs,
482 pmeth->sign_init = sign_init;
486 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
487 int (*verify_init) (EVP_PKEY_CTX *ctx),
488 int (*verify) (EVP_PKEY_CTX *ctx,
489 const unsigned char *sig,
491 const unsigned char *tbs,
494 pmeth->verify_init = verify_init;
495 pmeth->verify = verify;
498 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
499 int (*verify_recover_init) (EVP_PKEY_CTX
501 int (*verify_recover) (EVP_PKEY_CTX
510 pmeth->verify_recover_init = verify_recover_init;
511 pmeth->verify_recover = verify_recover;
514 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
515 int (*signctx_init) (EVP_PKEY_CTX *ctx,
517 int (*signctx) (EVP_PKEY_CTX *ctx,
522 pmeth->signctx_init = signctx_init;
523 pmeth->signctx = signctx;
526 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
527 int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
529 int (*verifyctx) (EVP_PKEY_CTX *ctx,
530 const unsigned char *sig,
534 pmeth->verifyctx_init = verifyctx_init;
535 pmeth->verifyctx = verifyctx;
538 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
539 int (*encrypt_init) (EVP_PKEY_CTX *ctx),
540 int (*encryptfn) (EVP_PKEY_CTX *ctx,
543 const unsigned char *in,
546 pmeth->encrypt_init = encrypt_init;
547 pmeth->encrypt = encryptfn;
550 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
551 int (*decrypt_init) (EVP_PKEY_CTX *ctx),
552 int (*decrypt) (EVP_PKEY_CTX *ctx,
555 const unsigned char *in,
558 pmeth->decrypt_init = decrypt_init;
559 pmeth->decrypt = decrypt;
562 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
563 int (*derive_init) (EVP_PKEY_CTX *ctx),
564 int (*derive) (EVP_PKEY_CTX *ctx,
568 pmeth->derive_init = derive_init;
569 pmeth->derive = derive;
572 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
573 int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
575 int (*ctrl_str) (EVP_PKEY_CTX *ctx,
580 pmeth->ctrl_str = ctrl_str;
583 void EVP_PKEY_meth_get_init(EVP_PKEY_METHOD *pmeth,
584 int (**pinit) (EVP_PKEY_CTX *ctx))
586 *pinit = pmeth->init;
589 void EVP_PKEY_meth_get_copy(EVP_PKEY_METHOD *pmeth,
590 int (**pcopy) (EVP_PKEY_CTX *dst,
593 *pcopy = pmeth->copy;
596 void EVP_PKEY_meth_get_cleanup(EVP_PKEY_METHOD *pmeth,
597 void (**pcleanup) (EVP_PKEY_CTX *ctx))
599 *pcleanup = pmeth->cleanup;
602 void EVP_PKEY_meth_get_paramgen(EVP_PKEY_METHOD *pmeth,
603 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
604 int (**pparamgen) (EVP_PKEY_CTX *ctx,
608 *pparamgen_init = pmeth->paramgen_init;
610 *pparamgen = pmeth->paramgen;
613 void EVP_PKEY_meth_get_keygen(EVP_PKEY_METHOD *pmeth,
614 int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
615 int (**pkeygen) (EVP_PKEY_CTX *ctx,
619 *pkeygen_init = pmeth->keygen_init;
621 *pkeygen = pmeth->keygen;
624 void EVP_PKEY_meth_get_sign(EVP_PKEY_METHOD *pmeth,
625 int (**psign_init) (EVP_PKEY_CTX *ctx),
626 int (**psign) (EVP_PKEY_CTX *ctx,
627 unsigned char *sig, size_t *siglen,
628 const unsigned char *tbs,
632 *psign_init = pmeth->sign_init;
634 *psign = pmeth->sign;
637 void EVP_PKEY_meth_get_verify(EVP_PKEY_METHOD *pmeth,
638 int (**pverify_init) (EVP_PKEY_CTX *ctx),
639 int (**pverify) (EVP_PKEY_CTX *ctx,
640 const unsigned char *sig,
642 const unsigned char *tbs,
646 *pverify_init = pmeth->verify_init;
648 *pverify = pmeth->verify;
651 void EVP_PKEY_meth_get_verify_recover(EVP_PKEY_METHOD *pmeth,
652 int (**pverify_recover_init) (EVP_PKEY_CTX
654 int (**pverify_recover) (EVP_PKEY_CTX
663 if (pverify_recover_init)
664 *pverify_recover_init = pmeth->verify_recover_init;
666 *pverify_recover = pmeth->verify_recover;
669 void EVP_PKEY_meth_get_signctx(EVP_PKEY_METHOD *pmeth,
670 int (**psignctx_init) (EVP_PKEY_CTX *ctx,
672 int (**psignctx) (EVP_PKEY_CTX *ctx,
678 *psignctx_init = pmeth->signctx_init;
680 *psignctx = pmeth->signctx;
683 void EVP_PKEY_meth_get_verifyctx(EVP_PKEY_METHOD *pmeth,
684 int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
686 int (**pverifyctx) (EVP_PKEY_CTX *ctx,
687 const unsigned char *sig,
692 *pverifyctx_init = pmeth->verifyctx_init;
694 *pverifyctx = pmeth->verifyctx;
697 void EVP_PKEY_meth_get_encrypt(EVP_PKEY_METHOD *pmeth,
698 int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
699 int (**pencryptfn) (EVP_PKEY_CTX *ctx,
702 const unsigned char *in,
706 *pencrypt_init = pmeth->encrypt_init;
708 *pencryptfn = pmeth->encrypt;
711 void EVP_PKEY_meth_get_decrypt(EVP_PKEY_METHOD *pmeth,
712 int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
713 int (**pdecrypt) (EVP_PKEY_CTX *ctx,
716 const unsigned char *in,
720 *pdecrypt_init = pmeth->decrypt_init;
722 *pdecrypt = pmeth->decrypt;
725 void EVP_PKEY_meth_get_derive(EVP_PKEY_METHOD *pmeth,
726 int (**pderive_init) (EVP_PKEY_CTX *ctx),
727 int (**pderive) (EVP_PKEY_CTX *ctx,
732 *pderive_init = pmeth->derive_init;
734 *pderive = pmeth->derive;
737 void EVP_PKEY_meth_get_ctrl(EVP_PKEY_METHOD *pmeth,
738 int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
740 int (**pctrl_str) (EVP_PKEY_CTX *ctx,
745 *pctrl = pmeth->ctrl;
747 *pctrl_str = pmeth->ctrl_str;