2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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).
62 #include <openssl/objects.h>
63 #include <openssl/evp.h>
64 #ifndef OPENSSL_NO_ENGINE
65 #include <openssl/engine.h>
67 #include "asn1_locl.h"
70 typedef int sk_cmp_fn_type(const char * const *a
, const char * const *b
);
72 DECLARE_STACK_OF(EVP_PKEY_METHOD
)
73 STACK_OF(EVP_PKEY_METHOD
) *app_pkey_methods
= NULL
;
75 extern const EVP_PKEY_METHOD rsa_pkey_meth
, dh_pkey_meth
, dsa_pkey_meth
;
76 extern const EVP_PKEY_METHOD ec_pkey_meth
, hmac_pkey_meth
, cmac_pkey_meth
;
77 extern const EVP_PKEY_METHOD dhx_pkey_meth
;
79 static const EVP_PKEY_METHOD
*standard_methods
[] =
81 #ifndef OPENSSL_NO_RSA
87 #ifndef OPENSSL_NO_DSA
100 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD
*, const EVP_PKEY_METHOD
*,
103 static int pmeth_cmp(const EVP_PKEY_METHOD
* const *a
,
104 const EVP_PKEY_METHOD
* const *b
)
106 return ((*a
)->pkey_id
- (*b
)->pkey_id
);
109 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD
*, const EVP_PKEY_METHOD
*,
112 const EVP_PKEY_METHOD
*EVP_PKEY_meth_find(int type
)
115 const EVP_PKEY_METHOD
*t
= &tmp
, **ret
;
117 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
)/sizeof(EVP_PKEY_METHOD
*));
131 static EVP_PKEY_CTX
*int_ctx_new(EVP_PKEY
*pkey
, ENGINE
*e
, int id
)
134 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 */
149 EVPerr(EVP_F_INT_CTX_NEW
,ERR_R_ENGINE_LIB
);
154 e
= ENGINE_get_pkey_meth_engine(id
);
156 /* If an ENGINE handled this method look it up. Othewise
157 * use internal tables.
161 pmeth
= ENGINE_get_pkey_meth(e
, id
);
164 pmeth
= EVP_PKEY_meth_find(id
);
168 EVPerr(EVP_F_INT_CTX_NEW
,EVP_R_UNSUPPORTED_ALGORITHM
);
172 ret
= OPENSSL_malloc(sizeof(EVP_PKEY_CTX
));
175 #ifndef OPENSSL_NO_ENGINE
179 EVPerr(EVP_F_INT_CTX_NEW
,ERR_R_MALLOC_FAILURE
);
184 ret
->operation
= EVP_PKEY_OP_UNDEFINED
;
189 CRYPTO_add(&pkey
->references
,1,CRYPTO_LOCK_EVP_PKEY
);
194 if (pmeth
->init(ret
) <= 0)
196 EVP_PKEY_CTX_free(ret
);
204 EVP_PKEY_METHOD
* EVP_PKEY_meth_new(int id
, int flags
)
206 EVP_PKEY_METHOD
*pmeth
;
207 pmeth
= OPENSSL_malloc(sizeof(EVP_PKEY_METHOD
));
211 memset(pmeth
, 0, sizeof(EVP_PKEY_METHOD
));
214 pmeth
->flags
= flags
| EVP_PKEY_FLAG_DYNAMIC
;
219 pmeth
->paramgen_init
= 0;
221 pmeth
->keygen_init
= 0;
223 pmeth
->sign_init
= 0;
225 pmeth
->verify_init
= 0;
227 pmeth
->verify_recover_init
= 0;
228 pmeth
->verify_recover
= 0;
229 pmeth
->signctx_init
= 0;
231 pmeth
->verifyctx_init
= 0;
232 pmeth
->verifyctx
= 0;
233 pmeth
->encrypt_init
= 0;
235 pmeth
->decrypt_init
= 0;
237 pmeth
->derive_init
= 0;
245 void EVP_PKEY_meth_get0_info(int *ppkey_id
, int *pflags
,
246 const EVP_PKEY_METHOD
*meth
)
249 *ppkey_id
= meth
->pkey_id
;
251 *pflags
= meth
->flags
;
254 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD
*dst
, const EVP_PKEY_METHOD
*src
)
257 dst
->init
= src
->init
;
258 dst
->copy
= src
->copy
;
259 dst
->cleanup
= src
->cleanup
;
261 dst
->paramgen_init
= src
->paramgen_init
;
262 dst
->paramgen
= src
->paramgen
;
264 dst
->keygen_init
= src
->keygen_init
;
265 dst
->keygen
= src
->keygen
;
267 dst
->sign_init
= src
->sign_init
;
268 dst
->sign
= src
->sign
;
270 dst
->verify_init
= src
->verify_init
;
271 dst
->verify
= src
->verify
;
273 dst
->verify_recover_init
= src
->verify_recover_init
;
274 dst
->verify_recover
= src
->verify_recover
;
276 dst
->signctx_init
= src
->signctx_init
;
277 dst
->signctx
= src
->signctx
;
279 dst
->verifyctx_init
= src
->verifyctx_init
;
280 dst
->verifyctx
= src
->verifyctx
;
282 dst
->encrypt_init
= src
->encrypt_init
;
283 dst
->encrypt
= src
->encrypt
;
285 dst
->decrypt_init
= src
->decrypt_init
;
286 dst
->decrypt
= src
->decrypt
;
288 dst
->derive_init
= src
->derive_init
;
289 dst
->derive
= src
->derive
;
291 dst
->ctrl
= src
->ctrl
;
292 dst
->ctrl_str
= src
->ctrl_str
;
295 void EVP_PKEY_meth_free(EVP_PKEY_METHOD
*pmeth
)
297 if (pmeth
&& (pmeth
->flags
& EVP_PKEY_FLAG_DYNAMIC
))
301 EVP_PKEY_CTX
*EVP_PKEY_CTX_new(EVP_PKEY
*pkey
, ENGINE
*e
)
303 return int_ctx_new(pkey
, e
, -1);
306 EVP_PKEY_CTX
*EVP_PKEY_CTX_new_id(int id
, ENGINE
*e
)
308 return int_ctx_new(NULL
, e
, id
);
311 EVP_PKEY_CTX
*EVP_PKEY_CTX_dup(EVP_PKEY_CTX
*pctx
)
314 if (!pctx
->pmeth
|| !pctx
->pmeth
->copy
)
316 #ifndef OPENSSL_NO_ENGINE
317 /* Make sure it's safe to copy a pkey context using an ENGINE */
318 if (pctx
->engine
&& !ENGINE_init(pctx
->engine
))
320 EVPerr(EVP_F_EVP_PKEY_CTX_DUP
,ERR_R_ENGINE_LIB
);
324 rctx
= OPENSSL_malloc(sizeof(EVP_PKEY_CTX
));
328 rctx
->pmeth
= pctx
->pmeth
;
329 #ifndef OPENSSL_NO_ENGINE
330 rctx
->engine
= pctx
->engine
;
334 CRYPTO_add(&pctx
->pkey
->references
,1,CRYPTO_LOCK_EVP_PKEY
);
336 rctx
->pkey
= pctx
->pkey
;
339 CRYPTO_add(&pctx
->peerkey
->references
,1,CRYPTO_LOCK_EVP_PKEY
);
341 rctx
->peerkey
= pctx
->peerkey
;
344 rctx
->app_data
= NULL
;
345 rctx
->operation
= pctx
->operation
;
347 if (pctx
->pmeth
->copy(rctx
, pctx
) > 0)
350 EVP_PKEY_CTX_free(rctx
);
355 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD
*pmeth
)
357 if (app_pkey_methods
== NULL
)
359 app_pkey_methods
= sk_EVP_PKEY_METHOD_new(pmeth_cmp
);
360 if (!app_pkey_methods
)
363 if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods
, pmeth
))
365 sk_EVP_PKEY_METHOD_sort(app_pkey_methods
);
369 void EVP_PKEY_CTX_free(EVP_PKEY_CTX
*ctx
)
373 if (ctx
->pmeth
&& ctx
->pmeth
->cleanup
)
374 ctx
->pmeth
->cleanup(ctx
);
376 EVP_PKEY_free(ctx
->pkey
);
378 EVP_PKEY_free(ctx
->peerkey
);
379 #ifndef OPENSSL_NO_ENGINE
381 /* The EVP_PKEY_CTX we used belongs to an ENGINE, release the
382 * functional reference we held for this reason. */
383 ENGINE_finish(ctx
->engine
);
388 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX
*ctx
, int keytype
, int optype
,
389 int cmd
, int p1
, void *p2
)
392 if (!ctx
|| !ctx
->pmeth
|| !ctx
->pmeth
->ctrl
)
394 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_COMMAND_NOT_SUPPORTED
);
397 if ((keytype
!= -1) && (ctx
->pmeth
->pkey_id
!= keytype
))
400 if (ctx
->operation
== EVP_PKEY_OP_UNDEFINED
)
402 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_NO_OPERATION_SET
);
406 if ((optype
!= -1) && !(ctx
->operation
& optype
))
408 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_INVALID_OPERATION
);
412 ret
= ctx
->pmeth
->ctrl(ctx
, cmd
, p1
, p2
);
415 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_COMMAND_NOT_SUPPORTED
);
421 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX
*ctx
,
422 const char *name
, const char *value
)
424 if (!ctx
|| !ctx
->pmeth
|| !ctx
->pmeth
->ctrl_str
)
426 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR
,
427 EVP_R_COMMAND_NOT_SUPPORTED
);
430 if (!strcmp(name
, "digest"))
433 if (!value
|| !(md
= EVP_get_digestbyname(value
)))
435 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR
,
436 EVP_R_INVALID_DIGEST
);
439 return EVP_PKEY_CTX_set_signature_md(ctx
, md
);
441 return ctx
->pmeth
->ctrl_str(ctx
, name
, value
);
444 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX
*ctx
)
446 return ctx
->operation
;
449 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX
*ctx
, int *dat
, int datlen
)
451 ctx
->keygen_info
= dat
;
452 ctx
->keygen_info_count
= datlen
;
455 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX
*ctx
, void *data
)
460 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX
*ctx
)
465 EVP_PKEY
*EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX
*ctx
)
470 EVP_PKEY
*EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX
*ctx
)
475 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX
*ctx
, void *data
)
477 ctx
->app_data
= data
;
480 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX
*ctx
)
482 return ctx
->app_data
;
485 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD
*pmeth
,
486 int (*init
)(EVP_PKEY_CTX
*ctx
))
491 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD
*pmeth
,
492 int (*copy
)(EVP_PKEY_CTX
*dst
, EVP_PKEY_CTX
*src
))
497 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD
*pmeth
,
498 void (*cleanup
)(EVP_PKEY_CTX
*ctx
))
500 pmeth
->cleanup
= cleanup
;
503 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD
*pmeth
,
504 int (*paramgen_init
)(EVP_PKEY_CTX
*ctx
),
505 int (*paramgen
)(EVP_PKEY_CTX
*ctx
, EVP_PKEY
*pkey
))
507 pmeth
->paramgen_init
= paramgen_init
;
508 pmeth
->paramgen
= paramgen
;
511 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD
*pmeth
,
512 int (*keygen_init
)(EVP_PKEY_CTX
*ctx
),
513 int (*keygen
)(EVP_PKEY_CTX
*ctx
, EVP_PKEY
*pkey
))
515 pmeth
->keygen_init
= keygen_init
;
516 pmeth
->keygen
= keygen
;
519 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD
*pmeth
,
520 int (*sign_init
)(EVP_PKEY_CTX
*ctx
),
521 int (*sign
)(EVP_PKEY_CTX
*ctx
, unsigned char *sig
, size_t *siglen
,
522 const unsigned char *tbs
, size_t tbslen
))
524 pmeth
->sign_init
= sign_init
;
528 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD
*pmeth
,
529 int (*verify_init
)(EVP_PKEY_CTX
*ctx
),
530 int (*verify
)(EVP_PKEY_CTX
*ctx
, const unsigned char *sig
, size_t siglen
,
531 const unsigned char *tbs
, size_t tbslen
))
533 pmeth
->verify_init
= verify_init
;
534 pmeth
->verify
= verify
;
537 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD
*pmeth
,
538 int (*verify_recover_init
)(EVP_PKEY_CTX
*ctx
),
539 int (*verify_recover
)(EVP_PKEY_CTX
*ctx
,
540 unsigned char *sig
, size_t *siglen
,
541 const unsigned char *tbs
, size_t tbslen
))
543 pmeth
->verify_recover_init
= verify_recover_init
;
544 pmeth
->verify_recover
= verify_recover
;
547 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD
*pmeth
,
548 int (*signctx_init
)(EVP_PKEY_CTX
*ctx
, EVP_MD_CTX
*mctx
),
549 int (*signctx
)(EVP_PKEY_CTX
*ctx
, unsigned char *sig
, size_t *siglen
,
552 pmeth
->signctx_init
= signctx_init
;
553 pmeth
->signctx
= signctx
;
556 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD
*pmeth
,
557 int (*verifyctx_init
)(EVP_PKEY_CTX
*ctx
, EVP_MD_CTX
*mctx
),
558 int (*verifyctx
)(EVP_PKEY_CTX
*ctx
, const unsigned char *sig
,int siglen
,
561 pmeth
->verifyctx_init
= verifyctx_init
;
562 pmeth
->verifyctx
= verifyctx
;
565 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD
*pmeth
,
566 int (*encrypt_init
)(EVP_PKEY_CTX
*ctx
),
567 int (*encryptfn
)(EVP_PKEY_CTX
*ctx
, unsigned char *out
, size_t *outlen
,
568 const unsigned char *in
, size_t inlen
))
570 pmeth
->encrypt_init
= encrypt_init
;
571 pmeth
->encrypt
= encryptfn
;
574 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD
*pmeth
,
575 int (*decrypt_init
)(EVP_PKEY_CTX
*ctx
),
576 int (*decrypt
)(EVP_PKEY_CTX
*ctx
, unsigned char *out
, size_t *outlen
,
577 const unsigned char *in
, size_t inlen
))
579 pmeth
->decrypt_init
= decrypt_init
;
580 pmeth
->decrypt
= decrypt
;
583 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD
*pmeth
,
584 int (*derive_init
)(EVP_PKEY_CTX
*ctx
),
585 int (*derive
)(EVP_PKEY_CTX
*ctx
, unsigned char *key
, size_t *keylen
))
587 pmeth
->derive_init
= derive_init
;
588 pmeth
->derive
= derive
;
591 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD
*pmeth
,
592 int (*ctrl
)(EVP_PKEY_CTX
*ctx
, int type
, int p1
, void *p2
),
593 int (*ctrl_str
)(EVP_PKEY_CTX
*ctx
, const char *type
, const char *value
))
596 pmeth
->ctrl_str
= ctrl_str
;