2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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
);
71 STACK
*app_pkey_methods
= NULL
;
73 extern EVP_PKEY_METHOD rsa_pkey_meth
, dh_pkey_meth
, dsa_pkey_meth
, ec_pkey_meth
;
75 static const EVP_PKEY_METHOD
*standard_methods
[] =
83 static int pmeth_cmp(const EVP_PKEY_METHOD
* const *a
,
84 const EVP_PKEY_METHOD
* const *b
)
86 return ((*a
)->pkey_id
- (*b
)->pkey_id
);
89 const EVP_PKEY_METHOD
*EVP_PKEY_meth_find(int type
)
91 EVP_PKEY_METHOD tmp
, *t
= &tmp
, **ret
;
96 idx
= sk_find(app_pkey_methods
, (char *)&tmp
);
98 return (EVP_PKEY_METHOD
*)
99 sk_value(app_pkey_methods
, idx
);
101 ret
= (EVP_PKEY_METHOD
**) OBJ_bsearch((char *)&t
,
102 (char *)standard_methods
,
103 sizeof(standard_methods
)/sizeof(EVP_PKEY_METHOD
*),
104 sizeof(EVP_PKEY_METHOD
*),
105 (int (*)(const void *, const void *))pmeth_cmp
);
111 static EVP_PKEY_CTX
*int_ctx_new(EVP_PKEY
*pkey
, ENGINE
*e
, int id
)
114 const EVP_PKEY_METHOD
*pmeth
;
117 if (!pkey
|| !pkey
->ameth
)
119 id
= pkey
->ameth
->pkey_id
;
121 /* Try to find an ENGINE which implements this method */
126 EVPerr(EVP_F_INT_CTX_NEW
,ERR_R_ENGINE_LIB
);
131 e
= ENGINE_get_pkey_meth_engine(id
);
133 /* If an ENGINE handled this method look it up. Othewise
134 * use internal tables.
138 pmeth
= ENGINE_get_pkey_meth(e
, id
);
140 pmeth
= EVP_PKEY_meth_find(id
);
145 ret
= OPENSSL_malloc(sizeof(EVP_PKEY_CTX
));
150 EVPerr(EVP_F_INT_CTX_NEW
,ERR_R_MALLOC_FAILURE
);
155 ret
->operation
= EVP_PKEY_OP_UNDEFINED
;
159 CRYPTO_add(&pkey
->references
,1,CRYPTO_LOCK_EVP_PKEY
);
164 if (pmeth
->init(ret
) <= 0)
166 EVP_PKEY_CTX_free(ret
);
174 EVP_PKEY_METHOD
* EVP_PKEY_meth_new(int id
, int flags
)
176 EVP_PKEY_METHOD
*pmeth
;
177 pmeth
= OPENSSL_malloc(sizeof(EVP_PKEY_METHOD
));
182 pmeth
->flags
= flags
| EVP_PKEY_FLAG_DYNAMIC
;
187 pmeth
->paramgen_init
= 0;
189 pmeth
->keygen_init
= 0;
191 pmeth
->sign_init
= 0;
193 pmeth
->verify_init
= 0;
195 pmeth
->verify_recover_init
= 0;
196 pmeth
->verify_recover
= 0;
197 pmeth
->signctx_init
= 0;
199 pmeth
->verifyctx_init
= 0;
200 pmeth
->verifyctx
= 0;
201 pmeth
->encrypt_init
= 0;
203 pmeth
->decrypt_init
= 0;
205 pmeth
->derive_init
= 0;
213 void EVP_PKEY_meth_free(EVP_PKEY_METHOD
*pmeth
)
215 if (pmeth
&& (pmeth
->flags
& EVP_PKEY_FLAG_DYNAMIC
))
219 EVP_PKEY_CTX
*EVP_PKEY_CTX_new(EVP_PKEY
*pkey
, ENGINE
*e
)
221 return int_ctx_new(pkey
, e
, -1);
224 EVP_PKEY_CTX
*EVP_PKEY_CTX_new_id(int id
, ENGINE
*e
)
226 return int_ctx_new(NULL
, e
, id
);
229 EVP_PKEY_CTX
*EVP_PKEY_CTX_dup(EVP_PKEY_CTX
*pctx
)
232 if (!pctx
->pmeth
|| !pctx
->pmeth
->copy
)
234 #ifndef OPENSSL_NO_ENGINE
235 /* Make sure it's safe to copy a pkey context using an ENGINE */
236 if (pctx
->engine
&& !ENGINE_init(pctx
->engine
))
238 EVPerr(EVP_F_EVP_PKEY_CTX_DUP
,ERR_R_ENGINE_LIB
);
242 rctx
= OPENSSL_malloc(sizeof(EVP_PKEY_CTX
));
246 rctx
->pmeth
= pctx
->pmeth
;
247 #ifndef OPENSSL_NO_ENGINE
248 rctx
->engine
= pctx
->engine
;
253 CRYPTO_add(&pctx
->pkey
->references
,1,CRYPTO_LOCK_EVP_PKEY
);
254 rctx
->pkey
= pctx
->pkey
;
259 CRYPTO_add(&pctx
->peerkey
->references
,1,CRYPTO_LOCK_EVP_PKEY
);
260 rctx
->peerkey
= pctx
->peerkey
;
264 rctx
->app_data
= NULL
;
265 rctx
->operation
= pctx
->operation
;
267 if (pctx
->pmeth
->copy(rctx
, pctx
) > 0)
270 EVP_PKEY_CTX_free(rctx
);
275 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD
*pmeth
)
277 if (app_pkey_methods
== NULL
)
279 app_pkey_methods
= sk_new((sk_cmp_fn_type
*)pmeth_cmp
);
280 if (!app_pkey_methods
)
283 if (!sk_push(app_pkey_methods
, (char *)pmeth
))
285 sk_sort(app_pkey_methods
);
289 void EVP_PKEY_CTX_free(EVP_PKEY_CTX
*ctx
)
291 if (ctx
->pmeth
&& ctx
->pmeth
->cleanup
)
292 ctx
->pmeth
->cleanup(ctx
);
294 EVP_PKEY_free(ctx
->pkey
);
296 EVP_PKEY_free(ctx
->peerkey
);
297 #ifndef OPENSSL_NO_ENGINE
299 /* The EVP_PKEY_CTX we used belongs to an ENGINE, release the
300 * functional reference we held for this reason. */
301 ENGINE_finish(ctx
->engine
);
306 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX
*ctx
, int keytype
, int optype
,
307 int cmd
, int p1
, void *p2
)
310 if (!ctx
|| !ctx
->pmeth
|| !ctx
->pmeth
->ctrl
)
312 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_COMMAND_NOT_SUPPORTED
);
315 if ((keytype
!= -1) && (ctx
->pmeth
->pkey_id
!= keytype
))
318 if (ctx
->operation
== EVP_PKEY_OP_UNDEFINED
)
320 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_NO_OPERATION_SET
);
324 if ((optype
!= -1) && !(ctx
->operation
& optype
))
326 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_INVALID_OPERATION
);
330 ret
= ctx
->pmeth
->ctrl(ctx
, cmd
, p1
, p2
);
333 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_COMMAND_NOT_SUPPORTED
);
339 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX
*ctx
,
340 const char *name
, const char *value
)
342 if (!ctx
|| !ctx
->pmeth
|| !ctx
->pmeth
->ctrl_str
)
344 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR
,
345 EVP_R_COMMAND_NOT_SUPPORTED
);
348 if (!strcmp(name
, "digest"))
351 if (!value
|| !(md
= EVP_get_digestbyname(value
)))
353 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR
,
354 EVP_R_INVALID_DIGEST
);
357 return EVP_PKEY_CTX_set_signature_md(ctx
, md
);
359 return ctx
->pmeth
->ctrl_str(ctx
, name
, value
);
362 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX
*ctx
)
364 return ctx
->operation
;
367 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX
*ctx
, int *dat
, int datlen
)
369 ctx
->keygen_info
= dat
;
370 ctx
->keygen_info_count
= datlen
;
373 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX
*ctx
, void *data
)
378 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX
*ctx
)
383 EVP_PKEY
*EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX
*ctx
)
388 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX
*ctx
, void *data
)
390 ctx
->app_data
= data
;
393 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX
*ctx
)
395 return ctx
->app_data
;
398 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD
*pmeth
,
399 int (*init
)(EVP_PKEY_CTX
*ctx
))
404 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD
*pmeth
,
405 int (*copy
)(EVP_PKEY_CTX
*dst
, EVP_PKEY_CTX
*src
))
410 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD
*pmeth
,
411 void (*cleanup
)(EVP_PKEY_CTX
*ctx
))
413 pmeth
->cleanup
= cleanup
;
416 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD
*pmeth
,
417 int (*paramgen_init
)(EVP_PKEY_CTX
*ctx
),
418 int (*paramgen
)(EVP_PKEY_CTX
*ctx
, EVP_PKEY
*pkey
))
420 pmeth
->paramgen_init
= paramgen_init
;
421 pmeth
->paramgen
= paramgen
;
424 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD
*pmeth
,
425 int (*keygen_init
)(EVP_PKEY_CTX
*ctx
),
426 int (*keygen
)(EVP_PKEY_CTX
*ctx
, EVP_PKEY
*pkey
))
428 pmeth
->keygen_init
= keygen_init
;
429 pmeth
->keygen
= keygen
;
432 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD
*pmeth
,
433 int (*sign_init
)(EVP_PKEY_CTX
*ctx
),
434 int (*sign
)(EVP_PKEY_CTX
*ctx
, unsigned char *sig
, size_t *siglen
,
435 const unsigned char *tbs
, size_t tbslen
))
437 pmeth
->sign_init
= sign_init
;
441 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD
*pmeth
,
442 int (*verify_init
)(EVP_PKEY_CTX
*ctx
),
443 int (*verify
)(EVP_PKEY_CTX
*ctx
, const unsigned char *sig
, size_t siglen
,
444 const unsigned char *tbs
, size_t tbslen
))
446 pmeth
->verify_init
= verify_init
;
447 pmeth
->verify
= verify
;
450 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD
*pmeth
,
451 int (*verify_recover_init
)(EVP_PKEY_CTX
*ctx
),
452 int (*verify_recover
)(EVP_PKEY_CTX
*ctx
,
453 unsigned char *sig
, size_t *siglen
,
454 const unsigned char *tbs
, size_t tbslen
))
456 pmeth
->verify_recover_init
= verify_recover_init
;
457 pmeth
->verify_recover
= verify_recover
;
460 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD
*pmeth
,
461 int (*signctx_init
)(EVP_PKEY_CTX
*ctx
, EVP_MD_CTX
*mctx
),
462 int (*signctx
)(EVP_PKEY_CTX
*ctx
, unsigned char *sig
, size_t *siglen
,
465 pmeth
->signctx_init
= signctx_init
;
466 pmeth
->signctx
= signctx
;
469 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD
*pmeth
,
470 int (*verifyctx_init
)(EVP_PKEY_CTX
*ctx
, EVP_MD_CTX
*mctx
),
471 int (*verifyctx
)(EVP_PKEY_CTX
*ctx
, const unsigned char *sig
,int siglen
,
474 pmeth
->verifyctx_init
= verifyctx_init
;
475 pmeth
->verifyctx
= verifyctx
;
478 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD
*pmeth
,
479 int (*encrypt_init
)(EVP_PKEY_CTX
*ctx
),
480 int (*encrypt
)(EVP_PKEY_CTX
*ctx
, unsigned char *out
, size_t *outlen
,
481 const unsigned char *in
, size_t inlen
))
483 pmeth
->encrypt_init
= encrypt_init
;
484 pmeth
->encrypt
= encrypt
;
487 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD
*pmeth
,
488 int (*decrypt_init
)(EVP_PKEY_CTX
*ctx
),
489 int (*decrypt
)(EVP_PKEY_CTX
*ctx
, unsigned char *out
, size_t *outlen
,
490 const unsigned char *in
, size_t inlen
))
492 pmeth
->decrypt_init
= decrypt_init
;
493 pmeth
->decrypt
= decrypt
;
496 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD
*pmeth
,
497 int (*derive_init
)(EVP_PKEY_CTX
*ctx
),
498 int (*derive
)(EVP_PKEY_CTX
*ctx
, unsigned char *key
, size_t *keylen
))
500 pmeth
->derive_init
= derive_init
;
501 pmeth
->derive
= derive
;
504 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD
*pmeth
,
505 int (*ctrl
)(EVP_PKEY_CTX
*ctx
, int type
, int p1
, void *p2
),
506 int (*ctrl_str
)(EVP_PKEY_CTX
*ctx
, const char *type
, const char *value
))
509 pmeth
->ctrl_str
= ctrl_str
;