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1/*
2 * Copyright 2006-2017 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <stdio.h>
11#include <stdlib.h>
12#include "internal/cryptlib.h"
13#include <openssl/engine.h>
14#include <openssl/evp.h>
15#include <openssl/x509v3.h>
16#include "internal/asn1_int.h"
17#include "internal/evp_int.h"
18#include "internal/numbers.h"
19
20typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
21
22static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
23
24static const EVP_PKEY_METHOD *standard_methods[] = {
25#ifndef OPENSSL_NO_RSA
26 &rsa_pkey_meth,
27#endif
28#ifndef OPENSSL_NO_DH
29 &dh_pkey_meth,
30#endif
31#ifndef OPENSSL_NO_DSA
32 &dsa_pkey_meth,
33#endif
34#ifndef OPENSSL_NO_EC
35 &ec_pkey_meth,
36#endif
37 &hmac_pkey_meth,
38#ifndef OPENSSL_NO_CMAC
39 &cmac_pkey_meth,
40#endif
41#ifndef OPENSSL_NO_RSA
42 &rsa_pss_pkey_meth,
43#endif
44#ifndef OPENSSL_NO_DH
45 &dhx_pkey_meth,
46#endif
47 &tls1_prf_pkey_meth,
48#ifndef OPENSSL_NO_EC
49 &ecx25519_pkey_meth,
50#endif
51 &hkdf_pkey_meth,
52#ifndef OPENSSL_NO_POLY1305
53 &poly1305_pkey_meth,
54#endif
55#ifndef OPENSSL_NO_SIPHASH
56 &siphash_pkey_meth,
57#endif
58};
59
60DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
61 pmeth);
62
63static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
64 const EVP_PKEY_METHOD *const *b)
65{
66 return ((*a)->pkey_id - (*b)->pkey_id);
67}
68
69IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
70 pmeth);
71
72const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
73{
74 EVP_PKEY_METHOD tmp;
75 const EVP_PKEY_METHOD *t = &tmp, **ret;
76 tmp.pkey_id = type;
77 if (app_pkey_methods) {
78 int idx;
79 idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
80 if (idx >= 0)
81 return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
82 }
83 ret = OBJ_bsearch_pmeth(&t, standard_methods,
84 sizeof(standard_methods) /
85 sizeof(EVP_PKEY_METHOD *));
86 if (!ret || !*ret)
87 return NULL;
88 return *ret;
89}
90
91static EVP_PKEY_CTX *int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id)
92{
93 EVP_PKEY_CTX *ret;
94 const EVP_PKEY_METHOD *pmeth;
95 if (id == -1) {
96 if (!pkey || !pkey->ameth)
97 return NULL;
98 id = pkey->ameth->pkey_id;
99 }
100#ifndef OPENSSL_NO_ENGINE
101 if (pkey && pkey->engine)
102 e = pkey->engine;
103 /* Try to find an ENGINE which implements this method */
104 if (e) {
105 if (!ENGINE_init(e)) {
106 EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
107 return NULL;
108 }
109 } else
110 e = ENGINE_get_pkey_meth_engine(id);
111
112 /*
113 * If an ENGINE handled this method look it up. Otherwise use internal
114 * tables.
115 */
116
117 if (e)
118 pmeth = ENGINE_get_pkey_meth(e, id);
119 else
120#endif
121 pmeth = EVP_PKEY_meth_find(id);
122
123 if (pmeth == NULL) {
124 EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
125 return NULL;
126 }
127
128 ret = OPENSSL_zalloc(sizeof(*ret));
129 if (ret == NULL) {
130#ifndef OPENSSL_NO_ENGINE
131 ENGINE_finish(e);
132#endif
133 EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
134 return NULL;
135 }
136 ret->engine = e;
137 ret->pmeth = pmeth;
138 ret->operation = EVP_PKEY_OP_UNDEFINED;
139 ret->pkey = pkey;
140 if (pkey)
141 EVP_PKEY_up_ref(pkey);
142
143 if (pmeth->init) {
144 if (pmeth->init(ret) <= 0) {
145 EVP_PKEY_CTX_free(ret);
146 return NULL;
147 }
148 }
149
150 return ret;
151}
152
153EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
154{
155 EVP_PKEY_METHOD *pmeth;
156
157 pmeth = OPENSSL_zalloc(sizeof(*pmeth));
158 if (pmeth == NULL)
159 return NULL;
160
161 pmeth->pkey_id = id;
162 pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
163 return pmeth;
164}
165
166void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
167 const EVP_PKEY_METHOD *meth)
168{
169 if (ppkey_id)
170 *ppkey_id = meth->pkey_id;
171 if (pflags)
172 *pflags = meth->flags;
173}
174
175void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
176{
177
178 dst->init = src->init;
179 dst->copy = src->copy;
180 dst->cleanup = src->cleanup;
181
182 dst->paramgen_init = src->paramgen_init;
183 dst->paramgen = src->paramgen;
184
185 dst->keygen_init = src->keygen_init;
186 dst->keygen = src->keygen;
187
188 dst->sign_init = src->sign_init;
189 dst->sign = src->sign;
190
191 dst->verify_init = src->verify_init;
192 dst->verify = src->verify;
193
194 dst->verify_recover_init = src->verify_recover_init;
195 dst->verify_recover = src->verify_recover;
196
197 dst->signctx_init = src->signctx_init;
198 dst->signctx = src->signctx;
199
200 dst->verifyctx_init = src->verifyctx_init;
201 dst->verifyctx = src->verifyctx;
202
203 dst->encrypt_init = src->encrypt_init;
204 dst->encrypt = src->encrypt;
205
206 dst->decrypt_init = src->decrypt_init;
207 dst->decrypt = src->decrypt;
208
209 dst->derive_init = src->derive_init;
210 dst->derive = src->derive;
211
212 dst->ctrl = src->ctrl;
213 dst->ctrl_str = src->ctrl_str;
214}
215
216void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
217{
218 if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
219 OPENSSL_free(pmeth);
220}
221
222EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
223{
224 return int_ctx_new(pkey, e, -1);
225}
226
227EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
228{
229 return int_ctx_new(NULL, e, id);
230}
231
232EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *pctx)
233{
234 EVP_PKEY_CTX *rctx;
235 if (!pctx->pmeth || !pctx->pmeth->copy)
236 return NULL;
237#ifndef OPENSSL_NO_ENGINE
238 /* Make sure it's safe to copy a pkey context using an ENGINE */
239 if (pctx->engine && !ENGINE_init(pctx->engine)) {
240 EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
241 return 0;
242 }
243#endif
244 rctx = OPENSSL_malloc(sizeof(*rctx));
245 if (rctx == NULL)
246 return NULL;
247
248 rctx->pmeth = pctx->pmeth;
249#ifndef OPENSSL_NO_ENGINE
250 rctx->engine = pctx->engine;
251#endif
252
253 if (pctx->pkey)
254 EVP_PKEY_up_ref(pctx->pkey);
255
256 rctx->pkey = pctx->pkey;
257
258 if (pctx->peerkey)
259 EVP_PKEY_up_ref(pctx->peerkey);
260
261 rctx->peerkey = pctx->peerkey;
262
263 rctx->data = NULL;
264 rctx->app_data = NULL;
265 rctx->operation = pctx->operation;
266
267 if (pctx->pmeth->copy(rctx, pctx) > 0)
268 return rctx;
269
270 EVP_PKEY_CTX_free(rctx);
271 return NULL;
272
273}
274
275int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
276{
277 if (app_pkey_methods == NULL) {
278 app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
279 if (app_pkey_methods == NULL)
280 return 0;
281 }
282 if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth))
283 return 0;
284 sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
285 return 1;
286}
287
288void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
289{
290 if (ctx == NULL)
291 return;
292 if (ctx->pmeth && ctx->pmeth->cleanup)
293 ctx->pmeth->cleanup(ctx);
294 EVP_PKEY_free(ctx->pkey);
295 EVP_PKEY_free(ctx->peerkey);
296#ifndef OPENSSL_NO_ENGINE
297 ENGINE_finish(ctx->engine);
298#endif
299 OPENSSL_free(ctx);
300}
301
302int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
303 int cmd, int p1, void *p2)
304{
305 int ret;
306 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl) {
307 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
308 return -2;
309 }
310 if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
311 return -1;
312
313 if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
314 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
315 return -1;
316 }
317
318 if ((optype != -1) && !(ctx->operation & optype)) {
319 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
320 return -1;
321 }
322
323 ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
324
325 if (ret == -2)
326 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
327
328 return ret;
329
330}
331
332int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
333 const char *name, const char *value)
334{
335 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
336 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
337 return -2;
338 }
339 if (strcmp(name, "digest") == 0)
340 return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
341 value);
342 return ctx->pmeth->ctrl_str(ctx, name, value);
343}
344
345/* Utility functions to send a string of hex string to a ctrl */
346
347int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
348{
349 size_t len;
350
351 len = strlen(str);
352 if (len > INT_MAX)
353 return -1;
354 return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
355}
356
357int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
358{
359 unsigned char *bin;
360 long binlen;
361 int rv = -1;
362
363 bin = OPENSSL_hexstr2buf(hex, &binlen);
364 if (bin == NULL)
365 return 0;
366 if (binlen <= INT_MAX)
367 rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
368 OPENSSL_free(bin);
369 return rv;
370}
371
372/* Pass a message digest to a ctrl */
373int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
374{
375 const EVP_MD *m;
376
377 if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
378 EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
379 return 0;
380 }
381 return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
382}
383
384int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
385{
386 return ctx->operation;
387}
388
389void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
390{
391 ctx->keygen_info = dat;
392 ctx->keygen_info_count = datlen;
393}
394
395void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
396{
397 ctx->data = data;
398}
399
400void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx)
401{
402 return ctx->data;
403}
404
405EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
406{
407 return ctx->pkey;
408}
409
410EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
411{
412 return ctx->peerkey;
413}
414
415void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
416{
417 ctx->app_data = data;
418}
419
420void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
421{
422 return ctx->app_data;
423}
424
425void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
426 int (*init) (EVP_PKEY_CTX *ctx))
427{
428 pmeth->init = init;
429}
430
431void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
432 int (*copy) (EVP_PKEY_CTX *dst,
433 EVP_PKEY_CTX *src))
434{
435 pmeth->copy = copy;
436}
437
438void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
439 void (*cleanup) (EVP_PKEY_CTX *ctx))
440{
441 pmeth->cleanup = cleanup;
442}
443
444void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
445 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
446 int (*paramgen) (EVP_PKEY_CTX *ctx,
447 EVP_PKEY *pkey))
448{
449 pmeth->paramgen_init = paramgen_init;
450 pmeth->paramgen = paramgen;
451}
452
453void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
454 int (*keygen_init) (EVP_PKEY_CTX *ctx),
455 int (*keygen) (EVP_PKEY_CTX *ctx,
456 EVP_PKEY *pkey))
457{
458 pmeth->keygen_init = keygen_init;
459 pmeth->keygen = keygen;
460}
461
462void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
463 int (*sign_init) (EVP_PKEY_CTX *ctx),
464 int (*sign) (EVP_PKEY_CTX *ctx,
465 unsigned char *sig, size_t *siglen,
466 const unsigned char *tbs,
467 size_t tbslen))
468{
469 pmeth->sign_init = sign_init;
470 pmeth->sign = sign;
471}
472
473void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
474 int (*verify_init) (EVP_PKEY_CTX *ctx),
475 int (*verify) (EVP_PKEY_CTX *ctx,
476 const unsigned char *sig,
477 size_t siglen,
478 const unsigned char *tbs,
479 size_t tbslen))
480{
481 pmeth->verify_init = verify_init;
482 pmeth->verify = verify;
483}
484
485void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
486 int (*verify_recover_init) (EVP_PKEY_CTX
487 *ctx),
488 int (*verify_recover) (EVP_PKEY_CTX
489 *ctx,
490 unsigned char
491 *sig,
492 size_t *siglen,
493 const unsigned
494 char *tbs,
495 size_t tbslen))
496{
497 pmeth->verify_recover_init = verify_recover_init;
498 pmeth->verify_recover = verify_recover;
499}
500
501void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
502 int (*signctx_init) (EVP_PKEY_CTX *ctx,
503 EVP_MD_CTX *mctx),
504 int (*signctx) (EVP_PKEY_CTX *ctx,
505 unsigned char *sig,
506 size_t *siglen,
507 EVP_MD_CTX *mctx))
508{
509 pmeth->signctx_init = signctx_init;
510 pmeth->signctx = signctx;
511}
512
513void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
514 int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
515 EVP_MD_CTX *mctx),
516 int (*verifyctx) (EVP_PKEY_CTX *ctx,
517 const unsigned char *sig,
518 int siglen,
519 EVP_MD_CTX *mctx))
520{
521 pmeth->verifyctx_init = verifyctx_init;
522 pmeth->verifyctx = verifyctx;
523}
524
525void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
526 int (*encrypt_init) (EVP_PKEY_CTX *ctx),
527 int (*encryptfn) (EVP_PKEY_CTX *ctx,
528 unsigned char *out,
529 size_t *outlen,
530 const unsigned char *in,
531 size_t inlen))
532{
533 pmeth->encrypt_init = encrypt_init;
534 pmeth->encrypt = encryptfn;
535}
536
537void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
538 int (*decrypt_init) (EVP_PKEY_CTX *ctx),
539 int (*decrypt) (EVP_PKEY_CTX *ctx,
540 unsigned char *out,
541 size_t *outlen,
542 const unsigned char *in,
543 size_t inlen))
544{
545 pmeth->decrypt_init = decrypt_init;
546 pmeth->decrypt = decrypt;
547}
548
549void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
550 int (*derive_init) (EVP_PKEY_CTX *ctx),
551 int (*derive) (EVP_PKEY_CTX *ctx,
552 unsigned char *key,
553 size_t *keylen))
554{
555 pmeth->derive_init = derive_init;
556 pmeth->derive = derive;
557}
558
559void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
560 int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
561 void *p2),
562 int (*ctrl_str) (EVP_PKEY_CTX *ctx,
563 const char *type,
564 const char *value))
565{
566 pmeth->ctrl = ctrl;
567 pmeth->ctrl_str = ctrl_str;
568}
569
570void EVP_PKEY_meth_get_init(EVP_PKEY_METHOD *pmeth,
571 int (**pinit) (EVP_PKEY_CTX *ctx))
572{
573 *pinit = pmeth->init;
574}
575
576void EVP_PKEY_meth_get_copy(EVP_PKEY_METHOD *pmeth,
577 int (**pcopy) (EVP_PKEY_CTX *dst,
578 EVP_PKEY_CTX *src))
579{
580 *pcopy = pmeth->copy;
581}
582
583void EVP_PKEY_meth_get_cleanup(EVP_PKEY_METHOD *pmeth,
584 void (**pcleanup) (EVP_PKEY_CTX *ctx))
585{
586 *pcleanup = pmeth->cleanup;
587}
588
589void EVP_PKEY_meth_get_paramgen(EVP_PKEY_METHOD *pmeth,
590 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
591 int (**pparamgen) (EVP_PKEY_CTX *ctx,
592 EVP_PKEY *pkey))
593{
594 if (pparamgen_init)
595 *pparamgen_init = pmeth->paramgen_init;
596 if (pparamgen)
597 *pparamgen = pmeth->paramgen;
598}
599
600void EVP_PKEY_meth_get_keygen(EVP_PKEY_METHOD *pmeth,
601 int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
602 int (**pkeygen) (EVP_PKEY_CTX *ctx,
603 EVP_PKEY *pkey))
604{
605 if (pkeygen_init)
606 *pkeygen_init = pmeth->keygen_init;
607 if (pkeygen)
608 *pkeygen = pmeth->keygen;
609}
610
611void EVP_PKEY_meth_get_sign(EVP_PKEY_METHOD *pmeth,
612 int (**psign_init) (EVP_PKEY_CTX *ctx),
613 int (**psign) (EVP_PKEY_CTX *ctx,
614 unsigned char *sig, size_t *siglen,
615 const unsigned char *tbs,
616 size_t tbslen))
617{
618 if (psign_init)
619 *psign_init = pmeth->sign_init;
620 if (psign)
621 *psign = pmeth->sign;
622}
623
624void EVP_PKEY_meth_get_verify(EVP_PKEY_METHOD *pmeth,
625 int (**pverify_init) (EVP_PKEY_CTX *ctx),
626 int (**pverify) (EVP_PKEY_CTX *ctx,
627 const unsigned char *sig,
628 size_t siglen,
629 const unsigned char *tbs,
630 size_t tbslen))
631{
632 if (pverify_init)
633 *pverify_init = pmeth->verify_init;
634 if (pverify)
635 *pverify = pmeth->verify;
636}
637
638void EVP_PKEY_meth_get_verify_recover(EVP_PKEY_METHOD *pmeth,
639 int (**pverify_recover_init) (EVP_PKEY_CTX
640 *ctx),
641 int (**pverify_recover) (EVP_PKEY_CTX
642 *ctx,
643 unsigned char
644 *sig,
645 size_t *siglen,
646 const unsigned
647 char *tbs,
648 size_t tbslen))
649{
650 if (pverify_recover_init)
651 *pverify_recover_init = pmeth->verify_recover_init;
652 if (pverify_recover)
653 *pverify_recover = pmeth->verify_recover;
654}
655
656void EVP_PKEY_meth_get_signctx(EVP_PKEY_METHOD *pmeth,
657 int (**psignctx_init) (EVP_PKEY_CTX *ctx,
658 EVP_MD_CTX *mctx),
659 int (**psignctx) (EVP_PKEY_CTX *ctx,
660 unsigned char *sig,
661 size_t *siglen,
662 EVP_MD_CTX *mctx))
663{
664 if (psignctx_init)
665 *psignctx_init = pmeth->signctx_init;
666 if (psignctx)
667 *psignctx = pmeth->signctx;
668}
669
670void EVP_PKEY_meth_get_verifyctx(EVP_PKEY_METHOD *pmeth,
671 int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
672 EVP_MD_CTX *mctx),
673 int (**pverifyctx) (EVP_PKEY_CTX *ctx,
674 const unsigned char *sig,
675 int siglen,
676 EVP_MD_CTX *mctx))
677{
678 if (pverifyctx_init)
679 *pverifyctx_init = pmeth->verifyctx_init;
680 if (pverifyctx)
681 *pverifyctx = pmeth->verifyctx;
682}
683
684void EVP_PKEY_meth_get_encrypt(EVP_PKEY_METHOD *pmeth,
685 int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
686 int (**pencryptfn) (EVP_PKEY_CTX *ctx,
687 unsigned char *out,
688 size_t *outlen,
689 const unsigned char *in,
690 size_t inlen))
691{
692 if (pencrypt_init)
693 *pencrypt_init = pmeth->encrypt_init;
694 if (pencryptfn)
695 *pencryptfn = pmeth->encrypt;
696}
697
698void EVP_PKEY_meth_get_decrypt(EVP_PKEY_METHOD *pmeth,
699 int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
700 int (**pdecrypt) (EVP_PKEY_CTX *ctx,
701 unsigned char *out,
702 size_t *outlen,
703 const unsigned char *in,
704 size_t inlen))
705{
706 if (pdecrypt_init)
707 *pdecrypt_init = pmeth->decrypt_init;
708 if (pdecrypt)
709 *pdecrypt = pmeth->decrypt;
710}
711
712void EVP_PKEY_meth_get_derive(EVP_PKEY_METHOD *pmeth,
713 int (**pderive_init) (EVP_PKEY_CTX *ctx),
714 int (**pderive) (EVP_PKEY_CTX *ctx,
715 unsigned char *key,
716 size_t *keylen))
717{
718 if (pderive_init)
719 *pderive_init = pmeth->derive_init;
720 if (pderive)
721 *pderive = pmeth->derive;
722}
723
724void EVP_PKEY_meth_get_ctrl(EVP_PKEY_METHOD *pmeth,
725 int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
726 void *p2),
727 int (**pctrl_str) (EVP_PKEY_CTX *ctx,
728 const char *type,
729 const char *value))
730{
731 if (pctrl)
732 *pctrl = pmeth->ctrl;
733 if (pctrl_str)
734 *pctrl_str = pmeth->ctrl_str;
735}
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