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-rw-r--r--src/lib/libcrypto/evp/pmeth_lib.c618
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diff --git a/src/lib/libcrypto/evp/pmeth_lib.c b/src/lib/libcrypto/evp/pmeth_lib.c
deleted file mode 100644
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--- a/src/lib/libcrypto/evp/pmeth_lib.c
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1/* $OpenBSD: pmeth_lib.c,v 1.11 2015/02/11 03:19:37 doug Exp $ */
2/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 2006.
4 */
5/* ====================================================================
6 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
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
18 * distribution.
19 *
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/)"
24 *
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.
29 *
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.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
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 * ====================================================================
52 *
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).
56 *
57 */
58
59#include <stdio.h>
60#include <stdlib.h>
61#include <string.h>
62
63#include <openssl/opensslconf.h>
64
65#include <openssl/err.h>
66#include <openssl/evp.h>
67#include <openssl/objects.h>
68
69#ifndef OPENSSL_NO_ENGINE
70#include <openssl/engine.h>
71#endif
72
73#include "asn1_locl.h"
74#include "evp_locl.h"
75
76typedef int sk_cmp_fn_type(const char * const *a, const char * const *b);
77
78DECLARE_STACK_OF(EVP_PKEY_METHOD)
79STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
80
81extern const EVP_PKEY_METHOD rsa_pkey_meth, dh_pkey_meth, dsa_pkey_meth;
82extern const EVP_PKEY_METHOD ec_pkey_meth, hmac_pkey_meth, cmac_pkey_meth;
83extern const EVP_PKEY_METHOD gostimit_pkey_meth, gostr01_pkey_meth;
84
85static const EVP_PKEY_METHOD *standard_methods[] = {
86#ifndef OPENSSL_NO_RSA
87 &rsa_pkey_meth,
88#endif
89#ifndef OPENSSL_NO_DH
90 &dh_pkey_meth,
91#endif
92#ifndef OPENSSL_NO_DSA
93 &dsa_pkey_meth,
94#endif
95#ifndef OPENSSL_NO_EC
96 &ec_pkey_meth,
97#endif
98#ifndef OPENSSL_NO_GOST
99 &gostr01_pkey_meth,
100 &gostimit_pkey_meth,
101#endif
102 &hmac_pkey_meth,
103 &cmac_pkey_meth,
104};
105
106DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
107 pmeth);
108
109static int
110pmeth_cmp(const EVP_PKEY_METHOD * const *a, const EVP_PKEY_METHOD * const *b)
111{
112 return ((*a)->pkey_id - (*b)->pkey_id);
113}
114
115IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
116 pmeth);
117
118const EVP_PKEY_METHOD *
119EVP_PKEY_meth_find(int type)
120{
121 EVP_PKEY_METHOD tmp;
122 const EVP_PKEY_METHOD *t = &tmp, **ret;
123
124 tmp.pkey_id = type;
125 if (app_pkey_methods) {
126 int idx;
127 idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
128 if (idx >= 0)
129 return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
130 }
131 ret = OBJ_bsearch_pmeth(&t, standard_methods,
132 sizeof(standard_methods)/sizeof(EVP_PKEY_METHOD *));
133 if (!ret || !*ret)
134 return NULL;
135 return *ret;
136}
137
138static EVP_PKEY_CTX *
139int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id)
140{
141 EVP_PKEY_CTX *ret;
142 const EVP_PKEY_METHOD *pmeth;
143
144 if (id == -1) {
145 if (!pkey || !pkey->ameth)
146 return NULL;
147 id = pkey->ameth->pkey_id;
148 }
149#ifndef OPENSSL_NO_ENGINE
150 if (pkey && pkey->engine)
151 e = pkey->engine;
152 /* Try to find an ENGINE which implements this method */
153 if (e) {
154 if (!ENGINE_init(e)) {
155 EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
156 return NULL;
157 }
158 } else
159 e = ENGINE_get_pkey_meth_engine(id);
160
161 /* If an ENGINE handled this method look it up. Othewise
162 * use internal tables.
163 */
164
165 if (e)
166 pmeth = ENGINE_get_pkey_meth(e, id);
167 else
168#endif
169 pmeth = EVP_PKEY_meth_find(id);
170
171 if (pmeth == NULL) {
172 EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
173 return NULL;
174 }
175
176 ret = malloc(sizeof(EVP_PKEY_CTX));
177 if (!ret) {
178#ifndef OPENSSL_NO_ENGINE
179 if (e)
180 ENGINE_finish(e);
181#endif
182 EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
183 return NULL;
184 }
185 ret->engine = e;
186 ret->pmeth = pmeth;
187 ret->operation = EVP_PKEY_OP_UNDEFINED;
188 ret->pkey = pkey;
189 ret->peerkey = NULL;
190 ret->pkey_gencb = 0;
191 if (pkey)
192 CRYPTO_add(&pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
193 ret->data = NULL;
194
195 if (pmeth->init) {
196 if (pmeth->init(ret) <= 0) {
197 EVP_PKEY_CTX_free(ret);
198 return NULL;
199 }
200 }
201
202 return ret;
203}
204
205EVP_PKEY_METHOD*
206EVP_PKEY_meth_new(int id, int flags)
207{
208 EVP_PKEY_METHOD *pmeth;
209
210 pmeth = calloc(1, sizeof(EVP_PKEY_METHOD));
211 if (!pmeth)
212 return NULL;
213
214 pmeth->pkey_id = id;
215 pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
216
217 pmeth->init = 0;
218 pmeth->copy = 0;
219 pmeth->cleanup = 0;
220 pmeth->paramgen_init = 0;
221 pmeth->paramgen = 0;
222 pmeth->keygen_init = 0;
223 pmeth->keygen = 0;
224 pmeth->sign_init = 0;
225 pmeth->sign = 0;
226 pmeth->verify_init = 0;
227 pmeth->verify = 0;
228 pmeth->verify_recover_init = 0;
229 pmeth->verify_recover = 0;
230 pmeth->signctx_init = 0;
231 pmeth->signctx = 0;
232 pmeth->verifyctx_init = 0;
233 pmeth->verifyctx = 0;
234 pmeth->encrypt_init = 0;
235 pmeth->encrypt = 0;
236 pmeth->decrypt_init = 0;
237 pmeth->decrypt = 0;
238 pmeth->derive_init = 0;
239 pmeth->derive = 0;
240 pmeth->ctrl = 0;
241 pmeth->ctrl_str = 0;
242
243 return pmeth;
244}
245
246void
247EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags, const EVP_PKEY_METHOD *meth)
248{
249 if (ppkey_id)
250 *ppkey_id = meth->pkey_id;
251 if (pflags)
252 *pflags = meth->flags;
253}
254
255void
256EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
257{
258 dst->init = src->init;
259 dst->copy = src->copy;
260 dst->cleanup = src->cleanup;
261
262 dst->paramgen_init = src->paramgen_init;
263 dst->paramgen = src->paramgen;
264
265 dst->keygen_init = src->keygen_init;
266 dst->keygen = src->keygen;
267
268 dst->sign_init = src->sign_init;
269 dst->sign = src->sign;
270
271 dst->verify_init = src->verify_init;
272 dst->verify = src->verify;
273
274 dst->verify_recover_init = src->verify_recover_init;
275 dst->verify_recover = src->verify_recover;
276
277 dst->signctx_init = src->signctx_init;
278 dst->signctx = src->signctx;
279
280 dst->verifyctx_init = src->verifyctx_init;
281 dst->verifyctx = src->verifyctx;
282
283 dst->encrypt_init = src->encrypt_init;
284 dst->encrypt = src->encrypt;
285
286 dst->decrypt_init = src->decrypt_init;
287 dst->decrypt = src->decrypt;
288
289 dst->derive_init = src->derive_init;
290 dst->derive = src->derive;
291
292 dst->ctrl = src->ctrl;
293 dst->ctrl_str = src->ctrl_str;
294}
295
296void
297EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
298{
299 if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
300 free(pmeth);
301}
302
303EVP_PKEY_CTX *
304EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
305{
306 return int_ctx_new(pkey, e, -1);
307}
308
309EVP_PKEY_CTX *
310EVP_PKEY_CTX_new_id(int id, ENGINE *e)
311{
312 return int_ctx_new(NULL, e, id);
313}
314
315EVP_PKEY_CTX *
316EVP_PKEY_CTX_dup(EVP_PKEY_CTX *pctx)
317{
318 EVP_PKEY_CTX *rctx;
319
320 if (!pctx->pmeth || !pctx->pmeth->copy)
321 return NULL;
322#ifndef OPENSSL_NO_ENGINE
323 /* Make sure it's safe to copy a pkey context using an ENGINE */
324 if (pctx->engine && !ENGINE_init(pctx->engine)) {
325 EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
326 return 0;
327 }
328#endif
329 rctx = malloc(sizeof(EVP_PKEY_CTX));
330 if (!rctx)
331 return NULL;
332
333 rctx->pmeth = pctx->pmeth;
334#ifndef OPENSSL_NO_ENGINE
335 rctx->engine = pctx->engine;
336#endif
337
338 if (pctx->pkey)
339 CRYPTO_add(&pctx->pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
340
341 rctx->pkey = pctx->pkey;
342
343 if (pctx->peerkey)
344 CRYPTO_add(&pctx->peerkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
345
346 rctx->peerkey = pctx->peerkey;
347
348 rctx->data = NULL;
349 rctx->app_data = NULL;
350 rctx->operation = pctx->operation;
351
352 if (pctx->pmeth->copy(rctx, pctx) > 0)
353 return rctx;
354
355 EVP_PKEY_CTX_free(rctx);
356 return NULL;
357}
358
359int
360EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
361{
362 if (app_pkey_methods == NULL) {
363 app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
364 if (!app_pkey_methods)
365 return 0;
366 }
367 if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth))
368 return 0;
369 sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
370 return 1;
371}
372
373void
374EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
375{
376 if (ctx == NULL)
377 return;
378 if (ctx->pmeth && ctx->pmeth->cleanup)
379 ctx->pmeth->cleanup(ctx);
380 EVP_PKEY_free(ctx->pkey);
381 EVP_PKEY_free(ctx->peerkey);
382#ifndef OPENSSL_NO_ENGINE
383 if (ctx->engine)
384 /* The EVP_PKEY_CTX we used belongs to an ENGINE, release the
385 * functional reference we held for this reason. */
386 ENGINE_finish(ctx->engine);
387#endif
388 free(ctx);
389}
390
391int
392EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype, int cmd,
393 int p1, void *p2)
394{
395 int ret;
396
397 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl) {
398 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
399 return -2;
400 }
401 if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
402 return -1;
403
404 if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
405 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
406 return -1;
407 }
408
409 if ((optype != -1) && !(ctx->operation & optype)) {
410 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
411 return -1;
412 }
413
414 ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
415
416 if (ret == -2)
417 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
418
419 return ret;
420
421}
422
423int
424EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx, const char *name, const char *value)
425{
426 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
427 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
428 EVP_R_COMMAND_NOT_SUPPORTED);
429 return -2;
430 }
431 if (!strcmp(name, "digest")) {
432 const EVP_MD *md;
433 if (!value || !(md = EVP_get_digestbyname(value))) {
434 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
435 EVP_R_INVALID_DIGEST);
436 return 0;
437 }
438 return EVP_PKEY_CTX_set_signature_md(ctx, md);
439 }
440 return ctx->pmeth->ctrl_str(ctx, name, value);
441}
442
443int
444EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
445{
446 return ctx->operation;
447}
448
449void
450EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
451{
452 ctx->keygen_info = dat;
453 ctx->keygen_info_count = datlen;
454}
455
456void
457EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
458{
459 ctx->data = data;
460}
461
462void *
463EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx)
464{
465 return ctx->data;
466}
467
468EVP_PKEY *
469EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
470{
471 return ctx->pkey;
472}
473
474EVP_PKEY *
475EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
476{
477 return ctx->peerkey;
478}
479
480void
481EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
482{
483 ctx->app_data = data;
484}
485
486void *
487EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
488{
489 return ctx->app_data;
490}
491
492void
493EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
494 int (*init)(EVP_PKEY_CTX *ctx))
495{
496 pmeth->init = init;
497}
498
499void
500EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
501 int (*copy)(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src))
502{
503 pmeth->copy = copy;
504}
505
506void
507EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
508 void (*cleanup)(EVP_PKEY_CTX *ctx))
509{
510 pmeth->cleanup = cleanup;
511}
512
513void
514EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
515 int (*paramgen_init)(EVP_PKEY_CTX *ctx),
516 int (*paramgen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey))
517{
518 pmeth->paramgen_init = paramgen_init;
519 pmeth->paramgen = paramgen;
520}
521
522void
523EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
524 int (*keygen_init)(EVP_PKEY_CTX *ctx),
525 int (*keygen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey))
526{
527 pmeth->keygen_init = keygen_init;
528 pmeth->keygen = keygen;
529}
530
531void
532EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
533 int (*sign_init)(EVP_PKEY_CTX *ctx),
534 int (*sign)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
535 const unsigned char *tbs, size_t tbslen))
536{
537 pmeth->sign_init = sign_init;
538 pmeth->sign = sign;
539}
540
541void
542EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
543 int (*verify_init)(EVP_PKEY_CTX *ctx),
544 int (*verify)(EVP_PKEY_CTX *ctx, const unsigned char *sig, size_t siglen,
545 const unsigned char *tbs, size_t tbslen))
546{
547 pmeth->verify_init = verify_init;
548 pmeth->verify = verify;
549}
550
551void
552EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
553 int (*verify_recover_init)(EVP_PKEY_CTX *ctx),
554 int (*verify_recover)(EVP_PKEY_CTX *ctx,
555 unsigned char *sig, size_t *siglen,
556 const unsigned char *tbs, size_t tbslen))
557{
558 pmeth->verify_recover_init = verify_recover_init;
559 pmeth->verify_recover = verify_recover;
560}
561
562void
563EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
564 int (*signctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
565 int (*signctx)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
566 EVP_MD_CTX *mctx))
567{
568 pmeth->signctx_init = signctx_init;
569 pmeth->signctx = signctx;
570}
571
572void
573EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
574 int (*verifyctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
575 int (*verifyctx)(EVP_PKEY_CTX *ctx, const unsigned char *sig, int siglen,
576 EVP_MD_CTX *mctx))
577{
578 pmeth->verifyctx_init = verifyctx_init;
579 pmeth->verifyctx = verifyctx;
580}
581
582void
583EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
584 int (*encrypt_init)(EVP_PKEY_CTX *ctx),
585 int (*encryptfn)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
586 const unsigned char *in, size_t inlen))
587{
588 pmeth->encrypt_init = encrypt_init;
589 pmeth->encrypt = encryptfn;
590}
591
592void
593EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
594 int (*decrypt_init)(EVP_PKEY_CTX *ctx),
595 int (*decrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
596 const unsigned char *in, size_t inlen))
597{
598 pmeth->decrypt_init = decrypt_init;
599 pmeth->decrypt = decrypt;
600}
601
602void
603EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
604 int (*derive_init)(EVP_PKEY_CTX *ctx),
605 int (*derive)(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen))
606{
607 pmeth->derive_init = derive_init;
608 pmeth->derive = derive;
609}
610
611void
612EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
613 int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2),
614 int (*ctrl_str)(EVP_PKEY_CTX *ctx, const char *type, const char *value))
615{
616 pmeth->ctrl = ctrl;
617 pmeth->ctrl_str = ctrl_str;
618}
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