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 #include "asn1_locl.h"
67 typedef int sk_cmp_fn_type(const char * const *a
, const char * const *b
);
68 STACK
*app_pkey_methods
= NULL
;
70 extern EVP_PKEY_METHOD rsa_pkey_meth
, dh_pkey_meth
, dsa_pkey_meth
, ec_pkey_meth
;
72 static const EVP_PKEY_METHOD
*standard_methods
[] =
80 static int pmeth_cmp(const EVP_PKEY_METHOD
* const *a
,
81 const EVP_PKEY_METHOD
* const *b
)
83 return ((*a
)->pkey_id
- (*b
)->pkey_id
);
86 const EVP_PKEY_METHOD
*EVP_PKEY_meth_find(int type
, ENGINE
*e
)
88 EVP_PKEY_METHOD tmp
, *t
= &tmp
, **ret
;
93 idx
= sk_find(app_pkey_methods
, (char *)&tmp
);
95 return (EVP_PKEY_METHOD
*)
96 sk_value(app_pkey_methods
, idx
);
98 ret
= (EVP_PKEY_METHOD
**) OBJ_bsearch((char *)&t
,
99 (char *)standard_methods
,
100 sizeof(standard_methods
)/sizeof(EVP_PKEY_METHOD
*),
101 sizeof(EVP_PKEY_METHOD
*),
102 (int (*)(const void *, const void *))pmeth_cmp
);
108 static EVP_PKEY_CTX
*int_ctx_new(EVP_PKEY
*pkey
, ENGINE
*e
, int id
)
111 const EVP_PKEY_METHOD
*pmeth
;
114 if (!pkey
|| !pkey
->ameth
)
116 id
= pkey
->ameth
->pkey_id
;
118 pmeth
= EVP_PKEY_meth_find(id
, e
);
121 ret
= OPENSSL_malloc(sizeof(EVP_PKEY_CTX
));
123 ret
->operation
= EVP_PKEY_OP_UNDEFINED
;
127 CRYPTO_add(&pkey
->references
,1,CRYPTO_LOCK_EVP_PKEY
);
132 if (pmeth
->init(ret
) <= 0)
134 EVP_PKEY_CTX_free(ret
);
142 EVP_PKEY_METHOD
* EVP_PKEY_meth_new(int id
, int flags
)
144 EVP_PKEY_METHOD
*pmeth
;
145 pmeth
= OPENSSL_malloc(sizeof(EVP_PKEY_METHOD
));
150 pmeth
->flags
= flags
| EVP_PKEY_FLAG_DYNAMIC
;
155 pmeth
->paramgen_init
= 0;
157 pmeth
->keygen_init
= 0;
159 pmeth
->sign_init
= 0;
161 pmeth
->verify_init
= 0;
163 pmeth
->verify_recover_init
= 0;
164 pmeth
->verify_recover
= 0;
165 pmeth
->signctx_init
= 0;
167 pmeth
->verifyctx_init
= 0;
168 pmeth
->verifyctx
= 0;
169 pmeth
->encrypt_init
= 0;
171 pmeth
->decrypt_init
= 0;
173 pmeth
->derive_init
= 0;
181 void EVP_PKEY_meth_free(EVP_PKEY_METHOD
*pmeth
)
183 if (pmeth
&& (pmeth
->flags
& EVP_PKEY_FLAG_DYNAMIC
))
187 EVP_PKEY_CTX
*EVP_PKEY_CTX_new(EVP_PKEY
*pkey
, ENGINE
*e
)
189 return int_ctx_new(pkey
, e
, -1);
192 EVP_PKEY_CTX
*EVP_PKEY_CTX_new_id(int id
, ENGINE
*e
)
194 return int_ctx_new(NULL
, e
, id
);
197 EVP_PKEY_CTX
*EVP_PKEY_CTX_dup(EVP_PKEY_CTX
*pctx
)
200 if (!pctx
->pmeth
|| !pctx
->pmeth
->copy
)
202 rctx
= OPENSSL_malloc(sizeof(EVP_PKEY_CTX
));
206 rctx
->pmeth
= pctx
->pmeth
;
210 CRYPTO_add(&pctx
->pkey
->references
,1,CRYPTO_LOCK_EVP_PKEY
);
211 rctx
->pkey
= pctx
->pkey
;
216 CRYPTO_add(&pctx
->peerkey
->references
,1,CRYPTO_LOCK_EVP_PKEY
);
217 rctx
->peerkey
= pctx
->peerkey
;
221 rctx
->app_data
= NULL
;
222 rctx
->operation
= pctx
->operation
;
224 if (pctx
->pmeth
->copy(rctx
, pctx
) > 0)
227 EVP_PKEY_CTX_free(rctx
);
232 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD
*pmeth
)
234 if (app_pkey_methods
== NULL
)
236 app_pkey_methods
= sk_new((sk_cmp_fn_type
*)pmeth_cmp
);
237 if (!app_pkey_methods
)
240 if (!sk_push(app_pkey_methods
, (char *)pmeth
))
242 sk_sort(app_pkey_methods
);
246 void EVP_PKEY_CTX_free(EVP_PKEY_CTX
*ctx
)
248 if (ctx
->pmeth
&& ctx
->pmeth
->cleanup
)
249 ctx
->pmeth
->cleanup(ctx
);
251 EVP_PKEY_free(ctx
->pkey
);
253 EVP_PKEY_free(ctx
->peerkey
);
257 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX
*ctx
, int keytype
, int optype
,
258 int cmd
, int p1
, void *p2
)
261 if (!ctx
|| !ctx
->pmeth
|| !ctx
->pmeth
->ctrl
)
263 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_COMMAND_NOT_SUPPORTED
);
266 if ((keytype
!= -1) && (ctx
->pmeth
->pkey_id
!= keytype
))
269 if (ctx
->operation
== EVP_PKEY_OP_UNDEFINED
)
271 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_NO_OPERATION_SET
);
275 if ((optype
!= -1) && !(ctx
->operation
& optype
))
277 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_INVALID_OPERATION
);
281 ret
= ctx
->pmeth
->ctrl(ctx
, cmd
, p1
, p2
);
284 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL
, EVP_R_COMMAND_NOT_SUPPORTED
);
290 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX
*ctx
,
291 const char *name
, const char *value
)
293 if (!ctx
|| !ctx
->pmeth
|| !ctx
->pmeth
->ctrl_str
)
295 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR
,
296 EVP_R_COMMAND_NOT_SUPPORTED
);
299 if (!strcmp(name
, "digest"))
302 if (!value
|| !(md
= EVP_get_digestbyname(value
)))
304 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR
,
305 EVP_R_INVALID_DIGEST
);
308 return EVP_PKEY_CTX_set_signature_md(ctx
, md
);
310 return ctx
->pmeth
->ctrl_str(ctx
, name
, value
);
313 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX
*ctx
)
315 return ctx
->operation
;
318 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX
*ctx
, int *dat
, int datlen
)
320 ctx
->keygen_info
= dat
;
321 ctx
->keygen_info_count
= datlen
;
324 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX
*ctx
, void *data
)
329 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX
*ctx
)
334 EVP_PKEY
*EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX
*ctx
)
339 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX
*ctx
, void *data
)
341 ctx
->app_data
= data
;
344 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX
*ctx
)
346 return ctx
->app_data
;
349 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD
*pmeth
,
350 int (*init
)(EVP_PKEY_CTX
*ctx
))
355 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD
*pmeth
,
356 int (*copy
)(EVP_PKEY_CTX
*dst
, EVP_PKEY_CTX
*src
))
361 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD
*pmeth
,
362 void (*cleanup
)(EVP_PKEY_CTX
*ctx
))
364 pmeth
->cleanup
= cleanup
;
367 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD
*pmeth
,
368 int (*paramgen_init
)(EVP_PKEY_CTX
*ctx
),
369 int (*paramgen
)(EVP_PKEY_CTX
*ctx
, EVP_PKEY
*pkey
))
371 pmeth
->paramgen_init
= paramgen_init
;
372 pmeth
->paramgen
= paramgen
;
375 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD
*pmeth
,
376 int (*keygen_init
)(EVP_PKEY_CTX
*ctx
),
377 int (*keygen
)(EVP_PKEY_CTX
*ctx
, EVP_PKEY
*pkey
))
379 pmeth
->keygen_init
= keygen_init
;
380 pmeth
->keygen
= keygen
;
383 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD
*pmeth
,
384 int (*sign_init
)(EVP_PKEY_CTX
*ctx
),
385 int (*sign
)(EVP_PKEY_CTX
*ctx
, unsigned char *sig
, size_t *siglen
,
386 const unsigned char *tbs
, size_t tbslen
))
388 pmeth
->sign_init
= sign_init
;
392 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD
*pmeth
,
393 int (*verify_init
)(EVP_PKEY_CTX
*ctx
),
394 int (*verify
)(EVP_PKEY_CTX
*ctx
, const unsigned char *sig
, size_t siglen
,
395 const unsigned char *tbs
, size_t tbslen
))
397 pmeth
->verify_init
= verify_init
;
398 pmeth
->verify
= verify
;
401 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD
*pmeth
,
402 int (*verify_recover_init
)(EVP_PKEY_CTX
*ctx
),
403 int (*verify_recover
)(EVP_PKEY_CTX
*ctx
,
404 unsigned char *sig
, size_t *siglen
,
405 const unsigned char *tbs
, size_t tbslen
))
407 pmeth
->verify_recover_init
= verify_recover_init
;
408 pmeth
->verify_recover
= verify_recover
;
411 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD
*pmeth
,
412 int (*signctx_init
)(EVP_PKEY_CTX
*ctx
, EVP_MD_CTX
*mctx
),
413 int (*signctx
)(EVP_PKEY_CTX
*ctx
, unsigned char *sig
, size_t *siglen
,
416 pmeth
->signctx_init
= signctx_init
;
417 pmeth
->signctx
= signctx
;
420 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD
*pmeth
,
421 int (*verifyctx_init
)(EVP_PKEY_CTX
*ctx
, EVP_MD_CTX
*mctx
),
422 int (*verifyctx
)(EVP_PKEY_CTX
*ctx
, const unsigned char *sig
,int siglen
,
425 pmeth
->verifyctx_init
= verifyctx_init
;
426 pmeth
->verifyctx
= verifyctx
;
429 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD
*pmeth
,
430 int (*encrypt_init
)(EVP_PKEY_CTX
*ctx
),
431 int (*encrypt
)(EVP_PKEY_CTX
*ctx
, unsigned char *out
, size_t *outlen
,
432 const unsigned char *in
, size_t inlen
))
434 pmeth
->encrypt_init
= encrypt_init
;
435 pmeth
->encrypt
= encrypt
;
438 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD
*pmeth
,
439 int (*decrypt_init
)(EVP_PKEY_CTX
*ctx
),
440 int (*decrypt
)(EVP_PKEY_CTX
*ctx
, unsigned char *out
, size_t *outlen
,
441 const unsigned char *in
, size_t inlen
))
443 pmeth
->decrypt_init
= decrypt_init
;
444 pmeth
->decrypt
= decrypt
;
447 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD
*pmeth
,
448 int (*derive_init
)(EVP_PKEY_CTX
*ctx
),
449 int (*derive
)(EVP_PKEY_CTX
*ctx
, unsigned char *key
, size_t *keylen
))
451 pmeth
->derive_init
= derive_init
;
452 pmeth
->derive
= derive
;
455 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD
*pmeth
,
456 int (*ctrl
)(EVP_PKEY_CTX
*ctx
, int type
, int p1
, void *p2
),
457 int (*ctrl_str
)(EVP_PKEY_CTX
*ctx
, const char *type
, const char *value
))
460 pmeth
->ctrl_str
= ctrl_str
;