xref: /freebsd/crypto/openssl/crypto/evp/pmeth_lib.c (revision a7148ab39c03abd4d1a84997c70bf96f15dd2a09)
1 /*
2  * Copyright 2006-2024 The OpenSSL Project Authors. All Rights Reserved.
3  *
4  * Licensed under the Apache License 2.0 (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 /*
11  * Low level key APIs (DH etc) are deprecated for public use, but still ok for
12  * internal use.
13  */
14 #include "internal/deprecated.h"
15 
16 #include <stdio.h>
17 #include <stdlib.h>
18 #ifndef FIPS_MODULE
19 # include <openssl/engine.h>
20 #endif
21 #include <openssl/evp.h>
22 #include <openssl/core_names.h>
23 #include <openssl/dh.h>
24 #include <openssl/rsa.h>
25 #include <openssl/kdf.h>
26 #include "internal/cryptlib.h"
27 #ifndef FIPS_MODULE
28 # include "crypto/asn1.h"
29 #endif
30 #include "crypto/evp.h"
31 #include "crypto/dh.h"
32 #include "crypto/ec.h"
33 #include "internal/ffc.h"
34 #include "internal/numbers.h"
35 #include "internal/provider.h"
36 #include "evp_local.h"
37 
38 #ifndef FIPS_MODULE
39 
40 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
41                                           int keytype, int optype,
42                                           int cmd, const char *name,
43                                           const void *data, size_t data_len);
44 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
45                                           int cmd, const char *name);
46 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx);
47 
48 typedef const EVP_PKEY_METHOD *(*pmeth_fn)(void);
49 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
50 
51 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
52 
53 /* This array needs to be in order of NIDs */
54 static pmeth_fn standard_methods[] = {
55     ossl_rsa_pkey_method,
56 # ifndef OPENSSL_NO_DH
57     ossl_dh_pkey_method,
58 # endif
59 # ifndef OPENSSL_NO_DSA
60     ossl_dsa_pkey_method,
61 # endif
62 # ifndef OPENSSL_NO_EC
63     ossl_ec_pkey_method,
64 # endif
65     ossl_rsa_pss_pkey_method,
66 # ifndef OPENSSL_NO_DH
67     ossl_dhx_pkey_method,
68 # endif
69 # ifndef OPENSSL_NO_EC
70     ossl_ecx25519_pkey_method,
71     ossl_ecx448_pkey_method,
72 # endif
73 # ifndef OPENSSL_NO_EC
74     ossl_ed25519_pkey_method,
75     ossl_ed448_pkey_method,
76 # endif
77 };
78 
79 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
80 
pmeth_func_cmp(const EVP_PKEY_METHOD * const * a,pmeth_fn const * b)81 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
82 {
83     return ((*a)->pkey_id - ((**b)())->pkey_id);
84 }
85 
86 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
87 
pmeth_cmp(const EVP_PKEY_METHOD * const * a,const EVP_PKEY_METHOD * const * b)88 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
89                      const EVP_PKEY_METHOD *const *b)
90 {
91     return ((*a)->pkey_id - (*b)->pkey_id);
92 }
93 
evp_pkey_meth_find_added_by_application(int type)94 static const EVP_PKEY_METHOD *evp_pkey_meth_find_added_by_application(int type)
95 {
96     if (app_pkey_methods != NULL) {
97         int idx;
98         EVP_PKEY_METHOD tmp;
99 
100         tmp.pkey_id = type;
101         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
102         if (idx >= 0)
103             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
104     }
105     return NULL;
106 }
107 
EVP_PKEY_meth_find(int type)108 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
109 {
110     pmeth_fn *ret;
111     EVP_PKEY_METHOD tmp;
112     const EVP_PKEY_METHOD *t;
113 
114     if ((t = evp_pkey_meth_find_added_by_application(type)) != NULL)
115         return t;
116 
117     tmp.pkey_id = type;
118     t = &tmp;
119     ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
120                                  OSSL_NELEM(standard_methods));
121     if (ret == NULL || *ret == NULL)
122         return NULL;
123     return (**ret)();
124 }
125 
EVP_PKEY_meth_new(int id,int flags)126 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
127 {
128     EVP_PKEY_METHOD *pmeth;
129 
130     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
131     if (pmeth == NULL) {
132         ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
133         return NULL;
134     }
135 
136     pmeth->pkey_id = id;
137     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
138     return pmeth;
139 }
140 
help_get_legacy_alg_type_from_keymgmt(const char * keytype,void * arg)141 static void help_get_legacy_alg_type_from_keymgmt(const char *keytype,
142                                                   void *arg)
143 {
144     int *type = arg;
145 
146     if (*type == NID_undef)
147         *type = evp_pkey_name2type(keytype);
148 }
149 
get_legacy_alg_type_from_keymgmt(const EVP_KEYMGMT * keymgmt)150 static int get_legacy_alg_type_from_keymgmt(const EVP_KEYMGMT *keymgmt)
151 {
152     int type = NID_undef;
153 
154     EVP_KEYMGMT_names_do_all(keymgmt, help_get_legacy_alg_type_from_keymgmt,
155                              &type);
156     return type;
157 }
158 #endif /* FIPS_MODULE */
159 
evp_pkey_ctx_state(const EVP_PKEY_CTX * ctx)160 int evp_pkey_ctx_state(const EVP_PKEY_CTX *ctx)
161 {
162     if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
163         return EVP_PKEY_STATE_UNKNOWN;
164 
165     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
166          && ctx->op.kex.algctx != NULL)
167         || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
168             && ctx->op.sig.algctx != NULL)
169         || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
170             && ctx->op.ciph.algctx != NULL)
171         || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
172             && ctx->op.keymgmt.genctx != NULL)
173         || (EVP_PKEY_CTX_IS_KEM_OP(ctx)
174             && ctx->op.encap.algctx != NULL))
175         return EVP_PKEY_STATE_PROVIDER;
176 
177     return EVP_PKEY_STATE_LEGACY;
178 }
179 
int_ctx_new(OSSL_LIB_CTX * libctx,EVP_PKEY * pkey,ENGINE * e,const char * keytype,const char * propquery,int id)180 static EVP_PKEY_CTX *int_ctx_new(OSSL_LIB_CTX *libctx,
181                                  EVP_PKEY *pkey, ENGINE *e,
182                                  const char *keytype, const char *propquery,
183                                  int id)
184 
185 {
186     EVP_PKEY_CTX *ret = NULL;
187     const EVP_PKEY_METHOD *pmeth = NULL, *app_pmeth = NULL;
188     EVP_KEYMGMT *keymgmt = NULL;
189 
190     /* Code below to be removed when legacy support is dropped. */
191     /* BEGIN legacy */
192     if (id == -1) {
193         if (pkey != NULL && !evp_pkey_is_provided(pkey)) {
194             id = pkey->type;
195         } else {
196             if (pkey != NULL) {
197                 /* Must be provided if we get here */
198                 keytype = EVP_KEYMGMT_get0_name(pkey->keymgmt);
199             }
200 #ifndef FIPS_MODULE
201             if (keytype != NULL) {
202                 id = evp_pkey_name2type(keytype);
203                 if (id == NID_undef)
204                     id = -1;
205             }
206 #endif
207         }
208     }
209     /* If no ID was found here, we can only resort to find a keymgmt */
210     if (id == -1) {
211 #ifndef FIPS_MODULE
212         /* Using engine with a key without id will not work */
213         if (e != NULL) {
214             ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
215             return NULL;
216         }
217 #endif
218         goto common;
219     }
220 
221 #ifndef FIPS_MODULE
222     /*
223      * Here, we extract what information we can for the purpose of
224      * supporting usage with implementations from providers, to make
225      * for a smooth transition from legacy stuff to provider based stuff.
226      *
227      * If an engine is given, this is entirely legacy, and we should not
228      * pretend anything else, so we clear the name.
229      */
230     if (e != NULL)
231         keytype = NULL;
232     if (e == NULL && (pkey == NULL || pkey->foreign == 0))
233         keytype = OBJ_nid2sn(id);
234 
235 # ifndef OPENSSL_NO_ENGINE
236     if (e == NULL && pkey != NULL)
237         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
238     /* Try to find an ENGINE which implements this method */
239     if (e != NULL) {
240         if (!ENGINE_init(e)) {
241             ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
242             return NULL;
243         }
244     } else {
245         e = ENGINE_get_pkey_meth_engine(id);
246     }
247 
248     /*
249      * If an ENGINE handled this method look it up. Otherwise use internal
250      * tables.
251      */
252     if (e != NULL)
253         pmeth = ENGINE_get_pkey_meth(e, id);
254     else
255 # endif /* OPENSSL_NO_ENGINE */
256     if (pkey != NULL && pkey->foreign)
257         pmeth = EVP_PKEY_meth_find(id);
258     else
259         app_pmeth = pmeth = evp_pkey_meth_find_added_by_application(id);
260 
261     /* END legacy */
262 #endif /* FIPS_MODULE */
263  common:
264     /*
265      * If there's no engine and no app supplied pmeth and there's a name, we try
266      * fetching a provider implementation.
267      */
268     if (e == NULL && app_pmeth == NULL && keytype != NULL) {
269         /*
270          * If |pkey| is given and is provided, we take a reference to its
271          * keymgmt.  Otherwise, we fetch one for the keytype we got. This
272          * is to ensure that operation init functions can access what they
273          * need through this single pointer.
274          */
275         if (pkey != NULL && pkey->keymgmt != NULL) {
276             if (!EVP_KEYMGMT_up_ref(pkey->keymgmt))
277                 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
278             else
279                 keymgmt = pkey->keymgmt;
280         } else {
281             keymgmt = EVP_KEYMGMT_fetch(libctx, keytype, propquery);
282         }
283         if (keymgmt == NULL)
284             return NULL;   /* EVP_KEYMGMT_fetch() recorded an error */
285 
286 #ifndef FIPS_MODULE
287         /*
288          * Chase down the legacy NID, as that might be needed for diverse
289          * purposes, such as ensure that EVP_PKEY_type() can return sensible
290          * values. We go through all keymgmt names, because the keytype
291          * that's passed to this function doesn't necessarily translate
292          * directly.
293          */
294         if (keymgmt != NULL) {
295             int tmp_id = get_legacy_alg_type_from_keymgmt(keymgmt);
296 
297             if (tmp_id != NID_undef) {
298                 if (id == -1) {
299                     id = tmp_id;
300                 } else {
301                     /*
302                      * It really really shouldn't differ.  If it still does,
303                      * something is very wrong.
304                      */
305                     if (!ossl_assert(id == tmp_id)) {
306                         ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
307                         EVP_KEYMGMT_free(keymgmt);
308                         return NULL;
309                     }
310                 }
311             }
312         }
313 #endif
314     }
315 
316     if (pmeth == NULL && keymgmt == NULL) {
317         ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
318     } else {
319         ret = OPENSSL_zalloc(sizeof(*ret));
320         if (ret == NULL)
321             ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
322     }
323 
324 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
325     if ((ret == NULL || pmeth == NULL) && e != NULL)
326         ENGINE_finish(e);
327 #endif
328 
329     if (ret == NULL) {
330         EVP_KEYMGMT_free(keymgmt);
331         return NULL;
332     }
333     if (propquery != NULL) {
334         ret->propquery = OPENSSL_strdup(propquery);
335         if (ret->propquery == NULL) {
336             OPENSSL_free(ret);
337             EVP_KEYMGMT_free(keymgmt);
338             return NULL;
339         }
340     }
341     ret->libctx = libctx;
342     ret->keytype = keytype;
343     ret->keymgmt = keymgmt;
344     ret->legacy_keytype = id;
345     ret->engine = e;
346     ret->pmeth = pmeth;
347     ret->operation = EVP_PKEY_OP_UNDEFINED;
348     ret->pkey = pkey;
349     if (pkey != NULL)
350         EVP_PKEY_up_ref(pkey);
351 
352     if (pmeth != NULL && pmeth->init != NULL) {
353         if (pmeth->init(ret) <= 0) {
354             ret->pmeth = NULL;
355             EVP_PKEY_CTX_free(ret);
356             return NULL;
357         }
358     }
359 
360     return ret;
361 }
362 
363 /*- All methods below can also be used in FIPS_MODULE */
364 
EVP_PKEY_CTX_new_from_name(OSSL_LIB_CTX * libctx,const char * name,const char * propquery)365 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OSSL_LIB_CTX *libctx,
366                                          const char *name,
367                                          const char *propquery)
368 {
369     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
370 }
371 
EVP_PKEY_CTX_new_from_pkey(OSSL_LIB_CTX * libctx,EVP_PKEY * pkey,const char * propquery)372 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OSSL_LIB_CTX *libctx, EVP_PKEY *pkey,
373                                          const char *propquery)
374 {
375     return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
376 }
377 
evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX * ctx)378 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
379 {
380     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
381         if (ctx->op.sig.algctx != NULL && ctx->op.sig.signature != NULL)
382             ctx->op.sig.signature->freectx(ctx->op.sig.algctx);
383         EVP_SIGNATURE_free(ctx->op.sig.signature);
384         ctx->op.sig.algctx = NULL;
385         ctx->op.sig.signature = NULL;
386     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
387         if (ctx->op.kex.algctx != NULL && ctx->op.kex.exchange != NULL)
388             ctx->op.kex.exchange->freectx(ctx->op.kex.algctx);
389         EVP_KEYEXCH_free(ctx->op.kex.exchange);
390         ctx->op.kex.algctx = NULL;
391         ctx->op.kex.exchange = NULL;
392     } else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
393         if (ctx->op.encap.algctx != NULL && ctx->op.encap.kem != NULL)
394             ctx->op.encap.kem->freectx(ctx->op.encap.algctx);
395         EVP_KEM_free(ctx->op.encap.kem);
396         ctx->op.encap.algctx = NULL;
397         ctx->op.encap.kem = NULL;
398     }
399     else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
400         if (ctx->op.ciph.algctx != NULL && ctx->op.ciph.cipher != NULL)
401             ctx->op.ciph.cipher->freectx(ctx->op.ciph.algctx);
402         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
403         ctx->op.ciph.algctx = NULL;
404         ctx->op.ciph.cipher = NULL;
405     } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
406         if (ctx->op.keymgmt.genctx != NULL && ctx->keymgmt != NULL)
407             evp_keymgmt_gen_cleanup(ctx->keymgmt, ctx->op.keymgmt.genctx);
408     }
409 }
410 
EVP_PKEY_CTX_free(EVP_PKEY_CTX * ctx)411 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
412 {
413     if (ctx == NULL)
414         return;
415     if (ctx->pmeth && ctx->pmeth->cleanup)
416         ctx->pmeth->cleanup(ctx);
417 
418     evp_pkey_ctx_free_old_ops(ctx);
419 #ifndef FIPS_MODULE
420     evp_pkey_ctx_free_all_cached_data(ctx);
421 #endif
422     EVP_KEYMGMT_free(ctx->keymgmt);
423 
424     OPENSSL_free(ctx->propquery);
425     EVP_PKEY_free(ctx->pkey);
426     EVP_PKEY_free(ctx->peerkey);
427 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
428     ENGINE_finish(ctx->engine);
429 #endif
430     BN_free(ctx->rsa_pubexp);
431     OPENSSL_free(ctx);
432 }
433 
434 #ifndef FIPS_MODULE
435 
EVP_PKEY_meth_get0_info(int * ppkey_id,int * pflags,const EVP_PKEY_METHOD * meth)436 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
437                              const EVP_PKEY_METHOD *meth)
438 {
439     if (ppkey_id)
440         *ppkey_id = meth->pkey_id;
441     if (pflags)
442         *pflags = meth->flags;
443 }
444 
EVP_PKEY_meth_copy(EVP_PKEY_METHOD * dst,const EVP_PKEY_METHOD * src)445 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
446 {
447     int pkey_id = dst->pkey_id;
448     int flags = dst->flags;
449 
450     *dst = *src;
451 
452     /* We only copy the function pointers so restore the other values */
453     dst->pkey_id = pkey_id;
454     dst->flags = flags;
455 }
456 
EVP_PKEY_meth_free(EVP_PKEY_METHOD * pmeth)457 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
458 {
459     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
460         OPENSSL_free(pmeth);
461 }
462 
EVP_PKEY_CTX_new(EVP_PKEY * pkey,ENGINE * e)463 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
464 {
465     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
466 }
467 
EVP_PKEY_CTX_new_id(int id,ENGINE * e)468 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
469 {
470     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
471 }
472 
EVP_PKEY_CTX_dup(const EVP_PKEY_CTX * pctx)473 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
474 {
475     EVP_PKEY_CTX *rctx;
476 
477 # ifndef OPENSSL_NO_ENGINE
478     /* Make sure it's safe to copy a pkey context using an ENGINE */
479     if (pctx->engine && !ENGINE_init(pctx->engine)) {
480         ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
481         return 0;
482     }
483 # endif
484     rctx = OPENSSL_zalloc(sizeof(*rctx));
485     if (rctx == NULL) {
486         ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
487         return NULL;
488     }
489 
490     if (pctx->pkey != NULL)
491         EVP_PKEY_up_ref(pctx->pkey);
492     rctx->pkey = pctx->pkey;
493     rctx->operation = pctx->operation;
494     rctx->libctx = pctx->libctx;
495     rctx->keytype = pctx->keytype;
496     rctx->propquery = NULL;
497     if (pctx->propquery != NULL) {
498         rctx->propquery = OPENSSL_strdup(pctx->propquery);
499         if (rctx->propquery == NULL)
500             goto err;
501     }
502     rctx->legacy_keytype = pctx->legacy_keytype;
503 
504     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
505         if (pctx->op.kex.exchange != NULL) {
506             rctx->op.kex.exchange = pctx->op.kex.exchange;
507             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange))
508                 goto err;
509         }
510         if (pctx->op.kex.algctx != NULL) {
511             if (!ossl_assert(pctx->op.kex.exchange != NULL))
512                 goto err;
513 
514             if (pctx->op.kex.exchange->dupctx != NULL)
515                 rctx->op.kex.algctx
516                     = pctx->op.kex.exchange->dupctx(pctx->op.kex.algctx);
517 
518             if (rctx->op.kex.algctx == NULL) {
519                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
520                 rctx->op.kex.exchange = NULL;
521                 goto err;
522             }
523             return rctx;
524         }
525     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
526         if (pctx->op.sig.signature != NULL) {
527             rctx->op.sig.signature = pctx->op.sig.signature;
528             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature))
529                 goto err;
530         }
531         if (pctx->op.sig.algctx != NULL) {
532             if (!ossl_assert(pctx->op.sig.signature != NULL))
533                 goto err;
534 
535             if (pctx->op.sig.signature->dupctx != NULL)
536                 rctx->op.sig.algctx
537                     = pctx->op.sig.signature->dupctx(pctx->op.sig.algctx);
538 
539             if (rctx->op.sig.algctx == NULL) {
540                 EVP_SIGNATURE_free(rctx->op.sig.signature);
541                 rctx->op.sig.signature = NULL;
542                 goto err;
543             }
544             return rctx;
545         }
546     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
547         if (pctx->op.ciph.cipher != NULL) {
548             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
549             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher))
550                 goto err;
551         }
552         if (pctx->op.ciph.algctx != NULL) {
553             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
554                 goto err;
555 
556             if (pctx->op.ciph.cipher->dupctx != NULL)
557                 rctx->op.ciph.algctx
558                     = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.algctx);
559 
560             if (rctx->op.ciph.algctx == NULL) {
561                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
562                 rctx->op.ciph.cipher = NULL;
563                 goto err;
564             }
565             return rctx;
566         }
567     } else if (EVP_PKEY_CTX_IS_KEM_OP(pctx)) {
568         if (pctx->op.encap.kem != NULL) {
569             rctx->op.encap.kem = pctx->op.encap.kem;
570             if (!EVP_KEM_up_ref(rctx->op.encap.kem))
571                 goto err;
572         }
573         if (pctx->op.encap.algctx != NULL) {
574             if (!ossl_assert(pctx->op.encap.kem != NULL))
575                 goto err;
576 
577             if (pctx->op.encap.kem->dupctx != NULL)
578                 rctx->op.encap.algctx
579                     = pctx->op.encap.kem->dupctx(pctx->op.encap.algctx);
580 
581             if (rctx->op.encap.algctx == NULL) {
582                 EVP_KEM_free(rctx->op.encap.kem);
583                 rctx->op.encap.kem = NULL;
584                 goto err;
585             }
586             return rctx;
587         }
588     } else if (EVP_PKEY_CTX_IS_GEN_OP(pctx)) {
589         /* Not supported - This would need a gen_dupctx() to work */
590         goto err;
591     }
592 
593     rctx->pmeth = pctx->pmeth;
594 # ifndef OPENSSL_NO_ENGINE
595     rctx->engine = pctx->engine;
596 # endif
597 
598     if (pctx->peerkey != NULL)
599         EVP_PKEY_up_ref(pctx->peerkey);
600     rctx->peerkey = pctx->peerkey;
601 
602     if (pctx->pmeth == NULL) {
603         if (rctx->operation == EVP_PKEY_OP_UNDEFINED) {
604             EVP_KEYMGMT *tmp_keymgmt = pctx->keymgmt;
605             void *provkey;
606 
607             provkey = evp_pkey_export_to_provider(pctx->pkey, pctx->libctx,
608                                                   &tmp_keymgmt, pctx->propquery);
609             if (provkey == NULL)
610                 goto err;
611             if (!EVP_KEYMGMT_up_ref(tmp_keymgmt))
612                 goto err;
613             EVP_KEYMGMT_free(rctx->keymgmt);
614             rctx->keymgmt = tmp_keymgmt;
615             return rctx;
616         }
617     } else if (pctx->pmeth->copy(rctx, pctx) > 0) {
618         return rctx;
619     }
620 err:
621     rctx->pmeth = NULL;
622     EVP_PKEY_CTX_free(rctx);
623     return NULL;
624 }
625 
EVP_PKEY_meth_add0(const EVP_PKEY_METHOD * pmeth)626 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
627 {
628     if (app_pkey_methods == NULL) {
629         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
630         if (app_pkey_methods == NULL){
631             ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
632             return 0;
633         }
634     }
635     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
636         ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
637         return 0;
638     }
639     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
640     return 1;
641 }
642 
evp_app_cleanup_int(void)643 void evp_app_cleanup_int(void)
644 {
645     if (app_pkey_methods != NULL)
646         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
647 }
648 
EVP_PKEY_meth_remove(const EVP_PKEY_METHOD * pmeth)649 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
650 {
651     const EVP_PKEY_METHOD *ret;
652 
653     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
654 
655     return ret == NULL ? 0 : 1;
656 }
657 
EVP_PKEY_meth_get_count(void)658 size_t EVP_PKEY_meth_get_count(void)
659 {
660     size_t rv = OSSL_NELEM(standard_methods);
661 
662     if (app_pkey_methods)
663         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
664     return rv;
665 }
666 
EVP_PKEY_meth_get0(size_t idx)667 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
668 {
669     if (idx < OSSL_NELEM(standard_methods))
670         return (standard_methods[idx])();
671     if (app_pkey_methods == NULL)
672         return NULL;
673     idx -= OSSL_NELEM(standard_methods);
674     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
675         return NULL;
676     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
677 }
678 #endif
679 
EVP_PKEY_CTX_is_a(EVP_PKEY_CTX * ctx,const char * keytype)680 int EVP_PKEY_CTX_is_a(EVP_PKEY_CTX *ctx, const char *keytype)
681 {
682 #ifndef FIPS_MODULE
683     if (evp_pkey_ctx_is_legacy(ctx))
684         return (ctx->pmeth->pkey_id == evp_pkey_name2type(keytype));
685 #endif
686     return EVP_KEYMGMT_is_a(ctx->keymgmt, keytype);
687 }
688 
EVP_PKEY_CTX_set_params(EVP_PKEY_CTX * ctx,const OSSL_PARAM * params)689 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, const OSSL_PARAM *params)
690 {
691     switch (evp_pkey_ctx_state(ctx)) {
692     case EVP_PKEY_STATE_PROVIDER:
693         if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
694             && ctx->op.kex.exchange != NULL
695             && ctx->op.kex.exchange->set_ctx_params != NULL)
696             return
697                 ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.algctx,
698                                                      params);
699         if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
700             && ctx->op.sig.signature != NULL
701             && ctx->op.sig.signature->set_ctx_params != NULL)
702             return
703                 ctx->op.sig.signature->set_ctx_params(ctx->op.sig.algctx,
704                                                       params);
705         if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
706             && ctx->op.ciph.cipher != NULL
707             && ctx->op.ciph.cipher->set_ctx_params != NULL)
708             return
709                 ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.algctx,
710                                                     params);
711         if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
712             && ctx->keymgmt != NULL
713             && ctx->keymgmt->gen_set_params != NULL)
714             return
715                 evp_keymgmt_gen_set_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
716                                            params);
717         if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
718             && ctx->op.encap.kem != NULL
719             && ctx->op.encap.kem->set_ctx_params != NULL)
720             return
721                 ctx->op.encap.kem->set_ctx_params(ctx->op.encap.algctx,
722                                                   params);
723         break;
724 #ifndef FIPS_MODULE
725     case EVP_PKEY_STATE_UNKNOWN:
726     case EVP_PKEY_STATE_LEGACY:
727         return evp_pkey_ctx_set_params_to_ctrl(ctx, params);
728 #endif
729     }
730     return 0;
731 }
732 
EVP_PKEY_CTX_get_params(EVP_PKEY_CTX * ctx,OSSL_PARAM * params)733 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
734 {
735     switch (evp_pkey_ctx_state(ctx)) {
736     case EVP_PKEY_STATE_PROVIDER:
737         if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
738             && ctx->op.kex.exchange != NULL
739             && ctx->op.kex.exchange->get_ctx_params != NULL)
740             return
741                 ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.algctx,
742                                                      params);
743         if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
744             && ctx->op.sig.signature != NULL
745             && ctx->op.sig.signature->get_ctx_params != NULL)
746             return
747                 ctx->op.sig.signature->get_ctx_params(ctx->op.sig.algctx,
748                                                       params);
749         if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
750             && ctx->op.ciph.cipher != NULL
751             && ctx->op.ciph.cipher->get_ctx_params != NULL)
752             return
753                 ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.algctx,
754                                                     params);
755         if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
756             && ctx->op.encap.kem != NULL
757             && ctx->op.encap.kem->get_ctx_params != NULL)
758             return
759                 ctx->op.encap.kem->get_ctx_params(ctx->op.encap.algctx,
760                                                   params);
761         break;
762 #ifndef FIPS_MODULE
763     case EVP_PKEY_STATE_UNKNOWN:
764     case EVP_PKEY_STATE_LEGACY:
765         return evp_pkey_ctx_get_params_to_ctrl(ctx, params);
766 #endif
767     }
768     return 0;
769 }
770 
771 #ifndef FIPS_MODULE
EVP_PKEY_CTX_gettable_params(const EVP_PKEY_CTX * ctx)772 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(const EVP_PKEY_CTX *ctx)
773 {
774     void *provctx;
775 
776     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
777             && ctx->op.kex.exchange != NULL
778             && ctx->op.kex.exchange->gettable_ctx_params != NULL) {
779         provctx = ossl_provider_ctx(EVP_KEYEXCH_get0_provider(ctx->op.kex.exchange));
780         return ctx->op.kex.exchange->gettable_ctx_params(ctx->op.kex.algctx,
781                                                          provctx);
782     }
783     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
784             && ctx->op.sig.signature != NULL
785             && ctx->op.sig.signature->gettable_ctx_params != NULL) {
786         provctx = ossl_provider_ctx(
787                       EVP_SIGNATURE_get0_provider(ctx->op.sig.signature));
788         return ctx->op.sig.signature->gettable_ctx_params(ctx->op.sig.algctx,
789                                                           provctx);
790     }
791     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
792             && ctx->op.ciph.cipher != NULL
793             && ctx->op.ciph.cipher->gettable_ctx_params != NULL) {
794         provctx = ossl_provider_ctx(
795                       EVP_ASYM_CIPHER_get0_provider(ctx->op.ciph.cipher));
796         return ctx->op.ciph.cipher->gettable_ctx_params(ctx->op.ciph.algctx,
797                                                         provctx);
798     }
799     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
800         && ctx->op.encap.kem != NULL
801         && ctx->op.encap.kem->gettable_ctx_params != NULL) {
802         provctx = ossl_provider_ctx(EVP_KEM_get0_provider(ctx->op.encap.kem));
803         return ctx->op.encap.kem->gettable_ctx_params(ctx->op.encap.algctx,
804                                                       provctx);
805     }
806     return NULL;
807 }
808 
EVP_PKEY_CTX_settable_params(const EVP_PKEY_CTX * ctx)809 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(const EVP_PKEY_CTX *ctx)
810 {
811     void *provctx;
812 
813     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
814             && ctx->op.kex.exchange != NULL
815             && ctx->op.kex.exchange->settable_ctx_params != NULL) {
816         provctx = ossl_provider_ctx(EVP_KEYEXCH_get0_provider(ctx->op.kex.exchange));
817         return ctx->op.kex.exchange->settable_ctx_params(ctx->op.kex.algctx,
818                                                          provctx);
819     }
820     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
821             && ctx->op.sig.signature != NULL
822             && ctx->op.sig.signature->settable_ctx_params != NULL) {
823         provctx = ossl_provider_ctx(
824                       EVP_SIGNATURE_get0_provider(ctx->op.sig.signature));
825         return ctx->op.sig.signature->settable_ctx_params(ctx->op.sig.algctx,
826                                                           provctx);
827     }
828     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
829             && ctx->op.ciph.cipher != NULL
830             && ctx->op.ciph.cipher->settable_ctx_params != NULL) {
831         provctx = ossl_provider_ctx(
832                       EVP_ASYM_CIPHER_get0_provider(ctx->op.ciph.cipher));
833         return ctx->op.ciph.cipher->settable_ctx_params(ctx->op.ciph.algctx,
834                                                         provctx);
835     }
836     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
837             && ctx->keymgmt != NULL
838             && ctx->keymgmt->gen_settable_params != NULL) {
839         provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(ctx->keymgmt));
840         return ctx->keymgmt->gen_settable_params(ctx->op.keymgmt.genctx,
841                                                  provctx);
842     }
843     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
844         && ctx->op.encap.kem != NULL
845         && ctx->op.encap.kem->settable_ctx_params != NULL) {
846         provctx = ossl_provider_ctx(EVP_KEM_get0_provider(ctx->op.encap.kem));
847         return ctx->op.encap.kem->settable_ctx_params(ctx->op.encap.algctx,
848                                                       provctx);
849     }
850     return NULL;
851 }
852 
853 /*
854  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
855  *
856  * Return 1 on success, 0 or negative for errors.
857  *
858  * In particular they return -2 if any of the params is not supported.
859  *
860  * They are not available in FIPS_MODULE as they depend on
861  *      - EVP_PKEY_CTX_{get,set}_params()
862  *      - EVP_PKEY_CTX_{gettable,settable}_params()
863  *
864  */
evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX * ctx,OSSL_PARAM * params)865 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
866 {
867     if (ctx == NULL || params == NULL)
868         return 0;
869 
870     /*
871      * We only check for provider side EVP_PKEY_CTX.  For #legacy, we
872      * depend on the translation that happens in EVP_PKEY_CTX_set_params()
873      * call, and that the resulting ctrl call will return -2 if it doesn't
874      * known the ctrl command number.
875      */
876     if (evp_pkey_ctx_is_provided(ctx)) {
877         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
878         const OSSL_PARAM *p;
879 
880         for (p = params; p->key != NULL; p++) {
881             /* Check the ctx actually understands this parameter */
882             if (OSSL_PARAM_locate_const(settable, p->key) == NULL )
883                 return -2;
884         }
885     }
886 
887     return EVP_PKEY_CTX_set_params(ctx, params);
888 }
889 
evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX * ctx,OSSL_PARAM * params)890 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
891 {
892     if (ctx == NULL || params == NULL)
893         return 0;
894 
895     /*
896      * We only check for provider side EVP_PKEY_CTX.  For #legacy, we
897      * depend on the translation that happens in EVP_PKEY_CTX_get_params()
898      * call, and that the resulting ctrl call will return -2 if it doesn't
899      * known the ctrl command number.
900      */
901     if (evp_pkey_ctx_is_provided(ctx)) {
902         const OSSL_PARAM *gettable = EVP_PKEY_CTX_gettable_params(ctx);
903         const OSSL_PARAM *p;
904 
905         for (p = params; p->key != NULL; p++ ) {
906             /* Check the ctx actually understands this parameter */
907             if (OSSL_PARAM_locate_const(gettable, p->key) == NULL )
908                 return -2;
909         }
910     }
911 
912     return EVP_PKEY_CTX_get_params(ctx, params);
913 }
914 
EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX * ctx,const EVP_MD ** md)915 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
916 {
917     OSSL_PARAM sig_md_params[2], *p = sig_md_params;
918     /* 80 should be big enough */
919     char name[80] = "";
920     const EVP_MD *tmp;
921 
922     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
923         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
924         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
925         return -2;
926     }
927 
928     if (ctx->op.sig.algctx == NULL)
929         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
930                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
931 
932     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
933                                             name,
934                                             sizeof(name));
935     *p = OSSL_PARAM_construct_end();
936 
937     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
938         return 0;
939 
940     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
941     if (tmp == NULL)
942         return 0;
943 
944     *md = tmp;
945 
946     return 1;
947 }
948 
evp_pkey_ctx_set_md(EVP_PKEY_CTX * ctx,const EVP_MD * md,int fallback,const char * param,int op,int ctrl)949 static int evp_pkey_ctx_set_md(EVP_PKEY_CTX *ctx, const EVP_MD *md,
950                                int fallback, const char *param, int op,
951                                int ctrl)
952 {
953     OSSL_PARAM md_params[2], *p = md_params;
954     const char *name;
955 
956     if (ctx == NULL || (ctx->operation & op) == 0) {
957         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
958         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
959         return -2;
960     }
961 
962     if (fallback)
963         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, 0, (void *)(md));
964 
965     if (md == NULL) {
966         name = "";
967     } else {
968         name = EVP_MD_get0_name(md);
969     }
970 
971     *p++ = OSSL_PARAM_construct_utf8_string(param,
972                                             /*
973                                              * Cast away the const. This is read
974                                              * only so should be safe
975                                              */
976                                             (char *)name, 0);
977     *p = OSSL_PARAM_construct_end();
978 
979     return EVP_PKEY_CTX_set_params(ctx, md_params);
980 }
981 
EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX * ctx,const EVP_MD * md)982 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
983 {
984     return evp_pkey_ctx_set_md(ctx, md, ctx->op.sig.algctx == NULL,
985                                OSSL_SIGNATURE_PARAM_DIGEST,
986                                EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD);
987 }
988 
EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX * ctx,const EVP_MD * md)989 int EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
990 {
991     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.algctx == NULL,
992                                OSSL_KDF_PARAM_DIGEST,
993                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_TLS_MD);
994 }
995 
evp_pkey_ctx_set1_octet_string(EVP_PKEY_CTX * ctx,int fallback,const char * param,int op,int ctrl,const unsigned char * data,int datalen)996 static int evp_pkey_ctx_set1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
997                                           const char *param, int op, int ctrl,
998                                           const unsigned char *data,
999                                           int datalen)
1000 {
1001     OSSL_PARAM octet_string_params[2], *p = octet_string_params;
1002 
1003     if (ctx == NULL || (ctx->operation & op) == 0) {
1004         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1005         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1006         return -2;
1007     }
1008 
1009     /* Code below to be removed when legacy support is dropped. */
1010     if (fallback)
1011         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
1012     /* end of legacy support */
1013 
1014     if (datalen < 0) {
1015         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
1016         return 0;
1017     }
1018 
1019     *p++ = OSSL_PARAM_construct_octet_string(param,
1020                                             /*
1021                                              * Cast away the const. This is read
1022                                              * only so should be safe
1023                                              */
1024                                             (unsigned char *)data,
1025                                             (size_t)datalen);
1026     *p = OSSL_PARAM_construct_end();
1027 
1028     return EVP_PKEY_CTX_set_params(ctx, octet_string_params);
1029 }
1030 
evp_pkey_ctx_add1_octet_string(EVP_PKEY_CTX * ctx,int fallback,const char * param,int op,int ctrl,const unsigned char * data,int datalen)1031 static int evp_pkey_ctx_add1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
1032                                           const char *param, int op, int ctrl,
1033                                           const unsigned char *data,
1034                                           int datalen)
1035 {
1036     OSSL_PARAM os_params[2];
1037     const OSSL_PARAM *gettables;
1038     unsigned char *info = NULL;
1039     size_t info_len = 0;
1040     size_t info_alloc = 0;
1041     int ret = 0;
1042 
1043     if (ctx == NULL || (ctx->operation & op) == 0) {
1044         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1045         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1046         return -2;
1047     }
1048 
1049     /* Code below to be removed when legacy support is dropped. */
1050     if (fallback)
1051         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
1052     /* end of legacy support */
1053 
1054     if (datalen < 0) {
1055         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
1056         return 0;
1057     } else if (datalen == 0) {
1058         return 1;
1059     }
1060 
1061     /* Check for older provider that doesn't support getting this parameter */
1062     gettables = EVP_PKEY_CTX_gettable_params(ctx);
1063     if (gettables == NULL || OSSL_PARAM_locate_const(gettables, param) == NULL)
1064         return evp_pkey_ctx_set1_octet_string(ctx, fallback, param, op, ctrl,
1065                                               data, datalen);
1066 
1067     /* Get the original value length */
1068     os_params[0] = OSSL_PARAM_construct_octet_string(param, NULL, 0);
1069     os_params[1] = OSSL_PARAM_construct_end();
1070 
1071     if (!EVP_PKEY_CTX_get_params(ctx, os_params))
1072         return 0;
1073 
1074     /* This should not happen but check to be sure. */
1075     if (os_params[0].return_size == OSSL_PARAM_UNMODIFIED)
1076         return 0;
1077 
1078     info_alloc = os_params[0].return_size + datalen;
1079     if (info_alloc == 0)
1080         return 0;
1081     info = OPENSSL_zalloc(info_alloc);
1082     if (info == NULL)
1083         return 0;
1084     info_len = os_params[0].return_size;
1085 
1086     os_params[0] = OSSL_PARAM_construct_octet_string(param, info, info_alloc);
1087 
1088     /* if we have data, then go get it */
1089     if (info_len > 0) {
1090         if (!EVP_PKEY_CTX_get_params(ctx, os_params))
1091             goto error;
1092     }
1093 
1094     /* Copy the input data */
1095     memcpy(&info[info_len], data, datalen);
1096     ret = EVP_PKEY_CTX_set_params(ctx, os_params);
1097 
1098  error:
1099     OPENSSL_clear_free(info, info_alloc);
1100     return ret;
1101 }
1102 
EVP_PKEY_CTX_set1_tls1_prf_secret(EVP_PKEY_CTX * ctx,const unsigned char * sec,int seclen)1103 int EVP_PKEY_CTX_set1_tls1_prf_secret(EVP_PKEY_CTX *ctx,
1104                                       const unsigned char *sec, int seclen)
1105 {
1106     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1107                                           OSSL_KDF_PARAM_SECRET,
1108                                           EVP_PKEY_OP_DERIVE,
1109                                           EVP_PKEY_CTRL_TLS_SECRET,
1110                                           sec, seclen);
1111 }
1112 
EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX * ctx,const unsigned char * seed,int seedlen)1113 int EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX *ctx,
1114                                     const unsigned char *seed, int seedlen)
1115 {
1116     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1117                                           OSSL_KDF_PARAM_SEED,
1118                                           EVP_PKEY_OP_DERIVE,
1119                                           EVP_PKEY_CTRL_TLS_SEED,
1120                                           seed, seedlen);
1121 }
1122 
EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX * ctx,const EVP_MD * md)1123 int EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
1124 {
1125     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.algctx == NULL,
1126                                OSSL_KDF_PARAM_DIGEST,
1127                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_HKDF_MD);
1128 }
1129 
EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX * ctx,const unsigned char * salt,int saltlen)1130 int EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX *ctx,
1131                                 const unsigned char *salt, int saltlen)
1132 {
1133     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1134                                           OSSL_KDF_PARAM_SALT,
1135                                           EVP_PKEY_OP_DERIVE,
1136                                           EVP_PKEY_CTRL_HKDF_SALT,
1137                                           salt, saltlen);
1138 }
1139 
EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX * ctx,const unsigned char * key,int keylen)1140 int EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX *ctx,
1141                                       const unsigned char *key, int keylen)
1142 {
1143     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1144                                           OSSL_KDF_PARAM_KEY,
1145                                           EVP_PKEY_OP_DERIVE,
1146                                           EVP_PKEY_CTRL_HKDF_KEY,
1147                                           key, keylen);
1148 }
1149 
EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX * ctx,const unsigned char * info,int infolen)1150 int EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX *ctx,
1151                                       const unsigned char *info, int infolen)
1152 {
1153     return evp_pkey_ctx_add1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1154                                           OSSL_KDF_PARAM_INFO,
1155                                           EVP_PKEY_OP_DERIVE,
1156                                           EVP_PKEY_CTRL_HKDF_INFO,
1157                                           info, infolen);
1158 }
1159 
EVP_PKEY_CTX_set_hkdf_mode(EVP_PKEY_CTX * ctx,int mode)1160 int EVP_PKEY_CTX_set_hkdf_mode(EVP_PKEY_CTX *ctx, int mode)
1161 {
1162     OSSL_PARAM int_params[2], *p = int_params;
1163 
1164     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1165         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1166         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1167         return -2;
1168     }
1169 
1170     /* Code below to be removed when legacy support is dropped. */
1171     if (ctx->op.kex.algctx == NULL)
1172         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
1173                                  EVP_PKEY_CTRL_HKDF_MODE, mode, NULL);
1174     /* end of legacy support */
1175 
1176     if (mode < 0) {
1177         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1178         return 0;
1179     }
1180 
1181     *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_MODE, &mode);
1182     *p = OSSL_PARAM_construct_end();
1183 
1184     return EVP_PKEY_CTX_set_params(ctx, int_params);
1185 }
1186 
EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX * ctx,const char * pass,int passlen)1187 int EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX *ctx, const char *pass,
1188                                int passlen)
1189 {
1190     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1191                                           OSSL_KDF_PARAM_PASSWORD,
1192                                           EVP_PKEY_OP_DERIVE,
1193                                           EVP_PKEY_CTRL_PASS,
1194                                           (const unsigned char *)pass, passlen);
1195 }
1196 
EVP_PKEY_CTX_set1_scrypt_salt(EVP_PKEY_CTX * ctx,const unsigned char * salt,int saltlen)1197 int EVP_PKEY_CTX_set1_scrypt_salt(EVP_PKEY_CTX *ctx,
1198                                   const unsigned char *salt, int saltlen)
1199 {
1200     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1201                                           OSSL_KDF_PARAM_SALT,
1202                                           EVP_PKEY_OP_DERIVE,
1203                                           EVP_PKEY_CTRL_SCRYPT_SALT,
1204                                           salt, saltlen);
1205 }
1206 
evp_pkey_ctx_set_uint64(EVP_PKEY_CTX * ctx,const char * param,int op,int ctrl,uint64_t val)1207 static int evp_pkey_ctx_set_uint64(EVP_PKEY_CTX *ctx, const char *param,
1208                                    int op, int ctrl, uint64_t val)
1209 {
1210     OSSL_PARAM uint64_params[2], *p = uint64_params;
1211 
1212     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1213         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1214         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1215         return -2;
1216     }
1217 
1218     /* Code below to be removed when legacy support is dropped. */
1219     if (ctx->op.kex.algctx == NULL)
1220         return EVP_PKEY_CTX_ctrl_uint64(ctx, -1, op, ctrl, val);
1221     /* end of legacy support */
1222 
1223     *p++ = OSSL_PARAM_construct_uint64(param, &val);
1224     *p = OSSL_PARAM_construct_end();
1225 
1226     return EVP_PKEY_CTX_set_params(ctx, uint64_params);
1227 }
1228 
EVP_PKEY_CTX_set_scrypt_N(EVP_PKEY_CTX * ctx,uint64_t n)1229 int EVP_PKEY_CTX_set_scrypt_N(EVP_PKEY_CTX *ctx, uint64_t n)
1230 {
1231     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_N,
1232                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_N,
1233                                    n);
1234 }
1235 
EVP_PKEY_CTX_set_scrypt_r(EVP_PKEY_CTX * ctx,uint64_t r)1236 int EVP_PKEY_CTX_set_scrypt_r(EVP_PKEY_CTX *ctx, uint64_t r)
1237 {
1238     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_R,
1239                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_R,
1240                                    r);
1241 }
1242 
EVP_PKEY_CTX_set_scrypt_p(EVP_PKEY_CTX * ctx,uint64_t p)1243 int EVP_PKEY_CTX_set_scrypt_p(EVP_PKEY_CTX *ctx, uint64_t p)
1244 {
1245     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_P,
1246                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_P,
1247                                    p);
1248 }
1249 
EVP_PKEY_CTX_set_scrypt_maxmem_bytes(EVP_PKEY_CTX * ctx,uint64_t maxmem_bytes)1250 int EVP_PKEY_CTX_set_scrypt_maxmem_bytes(EVP_PKEY_CTX *ctx,
1251                                          uint64_t maxmem_bytes)
1252 {
1253     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_MAXMEM,
1254                                    EVP_PKEY_OP_DERIVE,
1255                                    EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES,
1256                                    maxmem_bytes);
1257 }
1258 
EVP_PKEY_CTX_set_mac_key(EVP_PKEY_CTX * ctx,const unsigned char * key,int keylen)1259 int EVP_PKEY_CTX_set_mac_key(EVP_PKEY_CTX *ctx, const unsigned char *key,
1260                              int keylen)
1261 {
1262     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.keymgmt.genctx == NULL,
1263                                           OSSL_PKEY_PARAM_PRIV_KEY,
1264                                           EVP_PKEY_OP_KEYGEN,
1265                                           EVP_PKEY_CTRL_SET_MAC_KEY,
1266                                           key, keylen);
1267 }
1268 
EVP_PKEY_CTX_set_kem_op(EVP_PKEY_CTX * ctx,const char * op)1269 int EVP_PKEY_CTX_set_kem_op(EVP_PKEY_CTX *ctx, const char *op)
1270 {
1271     OSSL_PARAM params[2], *p = params;
1272 
1273     if (ctx == NULL || op == NULL) {
1274         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1275         return 0;
1276     }
1277     if (!EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
1278         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1279         return -2;
1280     }
1281     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KEM_PARAM_OPERATION,
1282                                             (char *)op, 0);
1283     *p = OSSL_PARAM_construct_end();
1284     return EVP_PKEY_CTX_set_params(ctx, params);
1285 }
1286 
evp_pkey_ctx_set1_id_prov(EVP_PKEY_CTX * ctx,const void * id,int len)1287 int evp_pkey_ctx_set1_id_prov(EVP_PKEY_CTX *ctx, const void *id, int len)
1288 {
1289     OSSL_PARAM params[2], *p = params;
1290     int ret;
1291 
1292     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1293         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1294         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1295         return -2;
1296     }
1297 
1298     *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_DIST_ID,
1299                                              /*
1300                                               * Cast away the const. This is
1301                                               * read only so should be safe
1302                                               */
1303                                              (void *)id, (size_t)len);
1304     *p++ = OSSL_PARAM_construct_end();
1305 
1306     ret = evp_pkey_ctx_set_params_strict(ctx, params);
1307     if (ret == -2)
1308         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1309     return ret;
1310 }
1311 
EVP_PKEY_CTX_set1_id(EVP_PKEY_CTX * ctx,const void * id,int len)1312 int EVP_PKEY_CTX_set1_id(EVP_PKEY_CTX *ctx, const void *id, int len)
1313 {
1314     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1315                              EVP_PKEY_CTRL_SET1_ID, (int)len, (void*)(id));
1316 }
1317 
get1_id_data(EVP_PKEY_CTX * ctx,void * id,size_t * id_len)1318 static int get1_id_data(EVP_PKEY_CTX *ctx, void *id, size_t *id_len)
1319 {
1320     int ret;
1321     void *tmp_id = NULL;
1322     OSSL_PARAM params[2], *p = params;
1323 
1324     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1325         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1326         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1327         return -2;
1328     }
1329 
1330     *p++ = OSSL_PARAM_construct_octet_ptr(OSSL_PKEY_PARAM_DIST_ID,
1331                                           &tmp_id, 0);
1332     *p++ = OSSL_PARAM_construct_end();
1333 
1334     ret = evp_pkey_ctx_get_params_strict(ctx, params);
1335     if (ret == -2) {
1336         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1337     } else if (ret > 0) {
1338         size_t tmp_id_len = params[0].return_size;
1339 
1340         if (id != NULL)
1341             memcpy(id, tmp_id, tmp_id_len);
1342         if (id_len != NULL)
1343             *id_len = tmp_id_len;
1344     }
1345     return ret;
1346 }
1347 
evp_pkey_ctx_get1_id_prov(EVP_PKEY_CTX * ctx,void * id)1348 int evp_pkey_ctx_get1_id_prov(EVP_PKEY_CTX *ctx, void *id)
1349 {
1350     return get1_id_data(ctx, id, NULL);
1351 }
1352 
evp_pkey_ctx_get1_id_len_prov(EVP_PKEY_CTX * ctx,size_t * id_len)1353 int evp_pkey_ctx_get1_id_len_prov(EVP_PKEY_CTX *ctx, size_t *id_len)
1354 {
1355     return get1_id_data(ctx, NULL, id_len);
1356 }
1357 
EVP_PKEY_CTX_get1_id(EVP_PKEY_CTX * ctx,void * id)1358 int EVP_PKEY_CTX_get1_id(EVP_PKEY_CTX *ctx, void *id)
1359 {
1360     return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_GET1_ID, 0, (void*)id);
1361 }
1362 
EVP_PKEY_CTX_get1_id_len(EVP_PKEY_CTX * ctx,size_t * id_len)1363 int EVP_PKEY_CTX_get1_id_len(EVP_PKEY_CTX *ctx, size_t *id_len)
1364 {
1365     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1366                              EVP_PKEY_CTRL_GET1_ID_LEN, 0, (void*)id_len);
1367 }
1368 
evp_pkey_ctx_ctrl_int(EVP_PKEY_CTX * ctx,int keytype,int optype,int cmd,int p1,void * p2)1369 static int evp_pkey_ctx_ctrl_int(EVP_PKEY_CTX *ctx, int keytype, int optype,
1370                                  int cmd, int p1, void *p2)
1371 {
1372     int ret = 0;
1373 
1374     /*
1375      * If the method has a |digest_custom| function, we can relax the
1376      * operation type check, since this can be called before the operation
1377      * is initialized.
1378      */
1379     if (ctx->pmeth == NULL || ctx->pmeth->digest_custom == NULL) {
1380         if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
1381             ERR_raise(ERR_LIB_EVP, EVP_R_NO_OPERATION_SET);
1382             return -1;
1383         }
1384 
1385         if ((optype != -1) && !(ctx->operation & optype)) {
1386             ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1387             return -1;
1388         }
1389     }
1390 
1391     switch (evp_pkey_ctx_state(ctx)) {
1392     case EVP_PKEY_STATE_PROVIDER:
1393         return evp_pkey_ctx_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
1394     case EVP_PKEY_STATE_UNKNOWN:
1395     case EVP_PKEY_STATE_LEGACY:
1396         if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
1397             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1398             return -2;
1399         }
1400         if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
1401             return -1;
1402 
1403         ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
1404 
1405         if (ret == -2)
1406             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1407         break;
1408     }
1409     return ret;
1410 }
1411 
EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX * ctx,int keytype,int optype,int cmd,int p1,void * p2)1412 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
1413                       int cmd, int p1, void *p2)
1414 {
1415     int ret = 0;
1416 
1417     if (ctx == NULL) {
1418         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1419         return -2;
1420     }
1421     /* If unsupported, we don't want that reported here */
1422     ERR_set_mark();
1423     ret = evp_pkey_ctx_store_cached_data(ctx, keytype, optype,
1424                                          cmd, NULL, p2, p1);
1425     if (ret == -2) {
1426         ERR_pop_to_mark();
1427     } else {
1428         ERR_clear_last_mark();
1429         /*
1430          * If there was an error, there was an error.
1431          * If the operation isn't initialized yet, we also return, as
1432          * the saved values will be used then anyway.
1433          */
1434         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1435             return ret;
1436     }
1437     return evp_pkey_ctx_ctrl_int(ctx, keytype, optype, cmd, p1, p2);
1438 }
1439 
EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX * ctx,int keytype,int optype,int cmd,uint64_t value)1440 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
1441                              int cmd, uint64_t value)
1442 {
1443     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
1444 }
1445 
1446 
evp_pkey_ctx_ctrl_str_int(EVP_PKEY_CTX * ctx,const char * name,const char * value)1447 static int evp_pkey_ctx_ctrl_str_int(EVP_PKEY_CTX *ctx,
1448                                      const char *name, const char *value)
1449 {
1450     int ret = 0;
1451 
1452     if (ctx == NULL) {
1453         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1454         return -2;
1455     }
1456 
1457     switch (evp_pkey_ctx_state(ctx)) {
1458     case EVP_PKEY_STATE_PROVIDER:
1459         return evp_pkey_ctx_ctrl_str_to_param(ctx, name, value);
1460     case EVP_PKEY_STATE_UNKNOWN:
1461     case EVP_PKEY_STATE_LEGACY:
1462         if (ctx == NULL || ctx->pmeth == NULL || ctx->pmeth->ctrl_str == NULL) {
1463             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1464             return -2;
1465         }
1466         if (strcmp(name, "digest") == 0)
1467             ret = EVP_PKEY_CTX_md(ctx,
1468                                   EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
1469                                   EVP_PKEY_CTRL_MD, value);
1470         else
1471             ret = ctx->pmeth->ctrl_str(ctx, name, value);
1472         break;
1473     }
1474 
1475     return ret;
1476 }
1477 
EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX * ctx,const char * name,const char * value)1478 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
1479                           const char *name, const char *value)
1480 {
1481     int ret = 0;
1482 
1483     /* If unsupported, we don't want that reported here */
1484     ERR_set_mark();
1485     ret = evp_pkey_ctx_store_cached_data(ctx, -1, -1, -1,
1486                                          name, value, strlen(value) + 1);
1487     if (ret == -2) {
1488         ERR_pop_to_mark();
1489     } else {
1490         ERR_clear_last_mark();
1491         /*
1492          * If there was an error, there was an error.
1493          * If the operation isn't initialized yet, we also return, as
1494          * the saved values will be used then anyway.
1495          */
1496         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1497             return ret;
1498     }
1499 
1500     return evp_pkey_ctx_ctrl_str_int(ctx, name, value);
1501 }
1502 
decode_cmd(int cmd,const char * name)1503 static int decode_cmd(int cmd, const char *name)
1504 {
1505     if (cmd == -1) {
1506         /*
1507          * The consequence of the assertion not being true is that this
1508          * function will return -1, which will cause the calling functions
1509          * to signal that the command is unsupported...  in non-debug mode.
1510          */
1511         if (ossl_assert(name != NULL))
1512             if (strcmp(name, "distid") == 0 || strcmp(name, "hexdistid") == 0)
1513                 cmd = EVP_PKEY_CTRL_SET1_ID;
1514     }
1515 
1516     return cmd;
1517 }
1518 
evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX * ctx,int keytype,int optype,int cmd,const char * name,const void * data,size_t data_len)1519 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
1520                                           int keytype, int optype,
1521                                           int cmd, const char *name,
1522                                           const void *data, size_t data_len)
1523 {
1524     /*
1525      * Check that it's one of the supported commands.  The ctrl commands
1526      * number cases here must correspond to the cases in the bottom switch
1527      * in this function.
1528      */
1529     switch (cmd = decode_cmd(cmd, name)) {
1530     case EVP_PKEY_CTRL_SET1_ID:
1531         break;
1532     default:
1533         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1534         return -2;
1535     }
1536 
1537     if (keytype != -1) {
1538         switch (evp_pkey_ctx_state(ctx)) {
1539         case EVP_PKEY_STATE_PROVIDER:
1540             if (ctx->keymgmt == NULL) {
1541                 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1542                 return -2;
1543             }
1544             if (!EVP_KEYMGMT_is_a(ctx->keymgmt,
1545                                   evp_pkey_type2name(keytype))) {
1546                 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1547                 return -1;
1548             }
1549             break;
1550         case EVP_PKEY_STATE_UNKNOWN:
1551         case EVP_PKEY_STATE_LEGACY:
1552             if (ctx->pmeth == NULL) {
1553                 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1554                 return -2;
1555             }
1556             if (EVP_PKEY_type(ctx->pmeth->pkey_id) != EVP_PKEY_type(keytype)) {
1557                 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1558                 return -1;
1559             }
1560             break;
1561         }
1562     }
1563     if (optype != -1 && (ctx->operation & optype) == 0) {
1564         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1565         return -1;
1566     }
1567 
1568     switch (cmd) {
1569     case EVP_PKEY_CTRL_SET1_ID:
1570         evp_pkey_ctx_free_cached_data(ctx, cmd, name);
1571         if (name != NULL) {
1572             ctx->cached_parameters.dist_id_name = OPENSSL_strdup(name);
1573             if (ctx->cached_parameters.dist_id_name == NULL) {
1574                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1575                 return 0;
1576             }
1577         }
1578         if (data_len > 0) {
1579             ctx->cached_parameters.dist_id = OPENSSL_memdup(data, data_len);
1580             if (ctx->cached_parameters.dist_id == NULL) {
1581                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1582                 return 0;
1583             }
1584         }
1585         ctx->cached_parameters.dist_id_set = 1;
1586         ctx->cached_parameters.dist_id_len = data_len;
1587         break;
1588     }
1589     return 1;
1590 }
1591 
evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX * ctx,int cmd,const char * name)1592 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
1593                                           int cmd, const char *name)
1594 {
1595     cmd = decode_cmd(cmd, name);
1596     switch (cmd) {
1597     case EVP_PKEY_CTRL_SET1_ID:
1598         OPENSSL_free(ctx->cached_parameters.dist_id);
1599         OPENSSL_free(ctx->cached_parameters.dist_id_name);
1600         ctx->cached_parameters.dist_id = NULL;
1601         ctx->cached_parameters.dist_id_name = NULL;
1602         break;
1603     }
1604 }
1605 
evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX * ctx)1606 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx)
1607 {
1608     evp_pkey_ctx_free_cached_data(ctx, EVP_PKEY_CTRL_SET1_ID, NULL);
1609 }
1610 
evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX * ctx)1611 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx)
1612 {
1613     int ret = 1;
1614 
1615     if (ret && ctx->cached_parameters.dist_id_set) {
1616         const char *name = ctx->cached_parameters.dist_id_name;
1617         const void *val = ctx->cached_parameters.dist_id;
1618         size_t len = ctx->cached_parameters.dist_id_len;
1619 
1620         if (name != NULL)
1621             ret = evp_pkey_ctx_ctrl_str_int(ctx, name, val);
1622         else
1623             ret = evp_pkey_ctx_ctrl_int(ctx, -1, ctx->operation,
1624                                         EVP_PKEY_CTRL_SET1_ID,
1625                                         (int)len, (void *)val);
1626     }
1627 
1628     return ret;
1629 }
1630 
EVP_PKEY_CTX_get0_libctx(EVP_PKEY_CTX * ctx)1631 OSSL_LIB_CTX *EVP_PKEY_CTX_get0_libctx(EVP_PKEY_CTX *ctx)
1632 {
1633     return ctx->libctx;
1634 }
1635 
EVP_PKEY_CTX_get0_propq(const EVP_PKEY_CTX * ctx)1636 const char *EVP_PKEY_CTX_get0_propq(const EVP_PKEY_CTX *ctx)
1637 {
1638     return ctx->propquery;
1639 }
1640 
EVP_PKEY_CTX_get0_provider(const EVP_PKEY_CTX * ctx)1641 const OSSL_PROVIDER *EVP_PKEY_CTX_get0_provider(const EVP_PKEY_CTX *ctx)
1642 {
1643     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1644         if (ctx->op.sig.signature != NULL)
1645             return EVP_SIGNATURE_get0_provider(ctx->op.sig.signature);
1646     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1647         if (ctx->op.kex.exchange != NULL)
1648             return EVP_KEYEXCH_get0_provider(ctx->op.kex.exchange);
1649     } else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
1650         if (ctx->op.encap.kem != NULL)
1651             return EVP_KEM_get0_provider(ctx->op.encap.kem);
1652     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
1653         if (ctx->op.ciph.cipher != NULL)
1654             return EVP_ASYM_CIPHER_get0_provider(ctx->op.ciph.cipher);
1655     } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
1656         if (ctx->keymgmt != NULL)
1657             return EVP_KEYMGMT_get0_provider(ctx->keymgmt);
1658     }
1659 
1660     return NULL;
1661 }
1662 
1663 /* Utility functions to send a string of hex string to a ctrl */
1664 
EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX * ctx,int cmd,const char * str)1665 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
1666 {
1667     size_t len;
1668 
1669     len = strlen(str);
1670     if (len > INT_MAX)
1671         return -1;
1672     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
1673 }
1674 
EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX * ctx,int cmd,const char * hex)1675 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
1676 {
1677     unsigned char *bin;
1678     long binlen;
1679     int rv = -1;
1680 
1681     bin = OPENSSL_hexstr2buf(hex, &binlen);
1682     if (bin == NULL)
1683         return 0;
1684     if (binlen <= INT_MAX)
1685         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
1686     OPENSSL_free(bin);
1687     return rv;
1688 }
1689 
1690 /* Pass a message digest to a ctrl */
EVP_PKEY_CTX_md(EVP_PKEY_CTX * ctx,int optype,int cmd,const char * md)1691 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1692 {
1693     const EVP_MD *m;
1694 
1695     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1696         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_DIGEST);
1697         return 0;
1698     }
1699     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1700 }
1701 
EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX * ctx)1702 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1703 {
1704     return ctx->operation;
1705 }
1706 
EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX * ctx,int * dat,int datlen)1707 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1708 {
1709     ctx->keygen_info = dat;
1710     ctx->keygen_info_count = datlen;
1711 }
1712 
EVP_PKEY_CTX_set_data(EVP_PKEY_CTX * ctx,void * data)1713 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1714 {
1715     ctx->data = data;
1716 }
1717 
EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX * ctx)1718 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1719 {
1720     return ctx->data;
1721 }
1722 
EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX * ctx)1723 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1724 {
1725     return ctx->pkey;
1726 }
1727 
EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX * ctx)1728 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1729 {
1730     return ctx->peerkey;
1731 }
1732 
EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX * ctx,void * data)1733 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1734 {
1735     ctx->app_data = data;
1736 }
1737 
EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX * ctx)1738 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1739 {
1740     return ctx->app_data;
1741 }
1742 
EVP_PKEY_meth_set_init(EVP_PKEY_METHOD * pmeth,int (* init)(EVP_PKEY_CTX * ctx))1743 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1744                             int (*init) (EVP_PKEY_CTX *ctx))
1745 {
1746     pmeth->init = init;
1747 }
1748 
EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD * pmeth,int (* copy)(EVP_PKEY_CTX * dst,const EVP_PKEY_CTX * src))1749 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1750                             int (*copy) (EVP_PKEY_CTX *dst,
1751                                          const EVP_PKEY_CTX *src))
1752 {
1753     pmeth->copy = copy;
1754 }
1755 
EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD * pmeth,void (* cleanup)(EVP_PKEY_CTX * ctx))1756 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1757                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1758 {
1759     pmeth->cleanup = cleanup;
1760 }
1761 
EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD * pmeth,int (* paramgen_init)(EVP_PKEY_CTX * ctx),int (* paramgen)(EVP_PKEY_CTX * ctx,EVP_PKEY * pkey))1762 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1763                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1764                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1765                                                  EVP_PKEY *pkey))
1766 {
1767     pmeth->paramgen_init = paramgen_init;
1768     pmeth->paramgen = paramgen;
1769 }
1770 
EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD * pmeth,int (* keygen_init)(EVP_PKEY_CTX * ctx),int (* keygen)(EVP_PKEY_CTX * ctx,EVP_PKEY * pkey))1771 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1772                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1773                               int (*keygen) (EVP_PKEY_CTX *ctx,
1774                                              EVP_PKEY *pkey))
1775 {
1776     pmeth->keygen_init = keygen_init;
1777     pmeth->keygen = keygen;
1778 }
1779 
EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD * pmeth,int (* sign_init)(EVP_PKEY_CTX * ctx),int (* sign)(EVP_PKEY_CTX * ctx,unsigned char * sig,size_t * siglen,const unsigned char * tbs,size_t tbslen))1780 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1781                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1782                             int (*sign) (EVP_PKEY_CTX *ctx,
1783                                          unsigned char *sig, size_t *siglen,
1784                                          const unsigned char *tbs,
1785                                          size_t tbslen))
1786 {
1787     pmeth->sign_init = sign_init;
1788     pmeth->sign = sign;
1789 }
1790 
EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD * pmeth,int (* verify_init)(EVP_PKEY_CTX * ctx),int (* verify)(EVP_PKEY_CTX * ctx,const unsigned char * sig,size_t siglen,const unsigned char * tbs,size_t tbslen))1791 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1792                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1793                               int (*verify) (EVP_PKEY_CTX *ctx,
1794                                              const unsigned char *sig,
1795                                              size_t siglen,
1796                                              const unsigned char *tbs,
1797                                              size_t tbslen))
1798 {
1799     pmeth->verify_init = verify_init;
1800     pmeth->verify = verify;
1801 }
1802 
EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD * pmeth,int (* verify_recover_init)(EVP_PKEY_CTX * ctx),int (* verify_recover)(EVP_PKEY_CTX * ctx,unsigned char * sig,size_t * siglen,const unsigned char * tbs,size_t tbslen))1803 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1804                                       int (*verify_recover_init) (EVP_PKEY_CTX
1805                                                                   *ctx),
1806                                       int (*verify_recover) (EVP_PKEY_CTX
1807                                                              *ctx,
1808                                                              unsigned char
1809                                                              *sig,
1810                                                              size_t *siglen,
1811                                                              const unsigned
1812                                                              char *tbs,
1813                                                              size_t tbslen))
1814 {
1815     pmeth->verify_recover_init = verify_recover_init;
1816     pmeth->verify_recover = verify_recover;
1817 }
1818 
EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD * pmeth,int (* signctx_init)(EVP_PKEY_CTX * ctx,EVP_MD_CTX * mctx),int (* signctx)(EVP_PKEY_CTX * ctx,unsigned char * sig,size_t * siglen,EVP_MD_CTX * mctx))1819 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1820                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1821                                                     EVP_MD_CTX *mctx),
1822                                int (*signctx) (EVP_PKEY_CTX *ctx,
1823                                                unsigned char *sig,
1824                                                size_t *siglen,
1825                                                EVP_MD_CTX *mctx))
1826 {
1827     pmeth->signctx_init = signctx_init;
1828     pmeth->signctx = signctx;
1829 }
1830 
EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD * pmeth,int (* verifyctx_init)(EVP_PKEY_CTX * ctx,EVP_MD_CTX * mctx),int (* verifyctx)(EVP_PKEY_CTX * ctx,const unsigned char * sig,int siglen,EVP_MD_CTX * mctx))1831 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1832                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1833                                                         EVP_MD_CTX *mctx),
1834                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1835                                                    const unsigned char *sig,
1836                                                    int siglen,
1837                                                    EVP_MD_CTX *mctx))
1838 {
1839     pmeth->verifyctx_init = verifyctx_init;
1840     pmeth->verifyctx = verifyctx;
1841 }
1842 
EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD * pmeth,int (* encrypt_init)(EVP_PKEY_CTX * ctx),int (* encryptfn)(EVP_PKEY_CTX * ctx,unsigned char * out,size_t * outlen,const unsigned char * in,size_t inlen))1843 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1844                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1845                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1846                                                  unsigned char *out,
1847                                                  size_t *outlen,
1848                                                  const unsigned char *in,
1849                                                  size_t inlen))
1850 {
1851     pmeth->encrypt_init = encrypt_init;
1852     pmeth->encrypt = encryptfn;
1853 }
1854 
EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD * pmeth,int (* decrypt_init)(EVP_PKEY_CTX * ctx),int (* decrypt)(EVP_PKEY_CTX * ctx,unsigned char * out,size_t * outlen,const unsigned char * in,size_t inlen))1855 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1856                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1857                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1858                                                unsigned char *out,
1859                                                size_t *outlen,
1860                                                const unsigned char *in,
1861                                                size_t inlen))
1862 {
1863     pmeth->decrypt_init = decrypt_init;
1864     pmeth->decrypt = decrypt;
1865 }
1866 
EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD * pmeth,int (* derive_init)(EVP_PKEY_CTX * ctx),int (* derive)(EVP_PKEY_CTX * ctx,unsigned char * key,size_t * keylen))1867 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1868                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1869                               int (*derive) (EVP_PKEY_CTX *ctx,
1870                                              unsigned char *key,
1871                                              size_t *keylen))
1872 {
1873     pmeth->derive_init = derive_init;
1874     pmeth->derive = derive;
1875 }
1876 
EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD * pmeth,int (* ctrl)(EVP_PKEY_CTX * ctx,int type,int p1,void * p2),int (* ctrl_str)(EVP_PKEY_CTX * ctx,const char * type,const char * value))1877 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1878                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1879                                          void *p2),
1880                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1881                                              const char *type,
1882                                              const char *value))
1883 {
1884     pmeth->ctrl = ctrl;
1885     pmeth->ctrl_str = ctrl_str;
1886 }
1887 
EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD * pmeth,int (* digestsign)(EVP_MD_CTX * ctx,unsigned char * sig,size_t * siglen,const unsigned char * tbs,size_t tbslen))1888 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1889     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1890                        const unsigned char *tbs, size_t tbslen))
1891 {
1892     pmeth->digestsign = digestsign;
1893 }
1894 
EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD * pmeth,int (* digestverify)(EVP_MD_CTX * ctx,const unsigned char * sig,size_t siglen,const unsigned char * tbs,size_t tbslen))1895 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1896     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1897                          size_t siglen, const unsigned char *tbs,
1898                          size_t tbslen))
1899 {
1900     pmeth->digestverify = digestverify;
1901 }
1902 
EVP_PKEY_meth_set_check(EVP_PKEY_METHOD * pmeth,int (* check)(EVP_PKEY * pkey))1903 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1904                              int (*check) (EVP_PKEY *pkey))
1905 {
1906     pmeth->check = check;
1907 }
1908 
EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD * pmeth,int (* check)(EVP_PKEY * pkey))1909 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1910                                     int (*check) (EVP_PKEY *pkey))
1911 {
1912     pmeth->public_check = check;
1913 }
1914 
EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD * pmeth,int (* check)(EVP_PKEY * pkey))1915 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1916                                    int (*check) (EVP_PKEY *pkey))
1917 {
1918     pmeth->param_check = check;
1919 }
1920 
EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD * pmeth,int (* digest_custom)(EVP_PKEY_CTX * ctx,EVP_MD_CTX * mctx))1921 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1922                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
1923                                                            EVP_MD_CTX *mctx))
1924 {
1925     pmeth->digest_custom = digest_custom;
1926 }
1927 
EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD * pmeth,int (** pinit)(EVP_PKEY_CTX * ctx))1928 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1929                             int (**pinit) (EVP_PKEY_CTX *ctx))
1930 {
1931     *pinit = pmeth->init;
1932 }
1933 
EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD * pmeth,int (** pcopy)(EVP_PKEY_CTX * dst,const EVP_PKEY_CTX * src))1934 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1935                             int (**pcopy) (EVP_PKEY_CTX *dst,
1936                                            const EVP_PKEY_CTX *src))
1937 {
1938     *pcopy = pmeth->copy;
1939 }
1940 
EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD * pmeth,void (** pcleanup)(EVP_PKEY_CTX * ctx))1941 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1942                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
1943 {
1944     *pcleanup = pmeth->cleanup;
1945 }
1946 
EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD * pmeth,int (** pparamgen_init)(EVP_PKEY_CTX * ctx),int (** pparamgen)(EVP_PKEY_CTX * ctx,EVP_PKEY * pkey))1947 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1948                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1949                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1950                                                    EVP_PKEY *pkey))
1951 {
1952     if (pparamgen_init)
1953         *pparamgen_init = pmeth->paramgen_init;
1954     if (pparamgen)
1955         *pparamgen = pmeth->paramgen;
1956 }
1957 
EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD * pmeth,int (** pkeygen_init)(EVP_PKEY_CTX * ctx),int (** pkeygen)(EVP_PKEY_CTX * ctx,EVP_PKEY * pkey))1958 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1959                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1960                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
1961                                                EVP_PKEY *pkey))
1962 {
1963     if (pkeygen_init)
1964         *pkeygen_init = pmeth->keygen_init;
1965     if (pkeygen)
1966         *pkeygen = pmeth->keygen;
1967 }
1968 
EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD * pmeth,int (** psign_init)(EVP_PKEY_CTX * ctx),int (** psign)(EVP_PKEY_CTX * ctx,unsigned char * sig,size_t * siglen,const unsigned char * tbs,size_t tbslen))1969 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1970                             int (**psign_init) (EVP_PKEY_CTX *ctx),
1971                             int (**psign) (EVP_PKEY_CTX *ctx,
1972                                            unsigned char *sig, size_t *siglen,
1973                                            const unsigned char *tbs,
1974                                            size_t tbslen))
1975 {
1976     if (psign_init)
1977         *psign_init = pmeth->sign_init;
1978     if (psign)
1979         *psign = pmeth->sign;
1980 }
1981 
EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD * pmeth,int (** pverify_init)(EVP_PKEY_CTX * ctx),int (** pverify)(EVP_PKEY_CTX * ctx,const unsigned char * sig,size_t siglen,const unsigned char * tbs,size_t tbslen))1982 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1983                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
1984                               int (**pverify) (EVP_PKEY_CTX *ctx,
1985                                                const unsigned char *sig,
1986                                                size_t siglen,
1987                                                const unsigned char *tbs,
1988                                                size_t tbslen))
1989 {
1990     if (pverify_init)
1991         *pverify_init = pmeth->verify_init;
1992     if (pverify)
1993         *pverify = pmeth->verify;
1994 }
1995 
EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD * pmeth,int (** pverify_recover_init)(EVP_PKEY_CTX * ctx),int (** pverify_recover)(EVP_PKEY_CTX * ctx,unsigned char * sig,size_t * siglen,const unsigned char * tbs,size_t tbslen))1996 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1997                                       int (**pverify_recover_init) (EVP_PKEY_CTX
1998                                                                     *ctx),
1999                                       int (**pverify_recover) (EVP_PKEY_CTX
2000                                                                *ctx,
2001                                                                unsigned char
2002                                                                *sig,
2003                                                                size_t *siglen,
2004                                                                const unsigned
2005                                                                char *tbs,
2006                                                                size_t tbslen))
2007 {
2008     if (pverify_recover_init)
2009         *pverify_recover_init = pmeth->verify_recover_init;
2010     if (pverify_recover)
2011         *pverify_recover = pmeth->verify_recover;
2012 }
2013 
EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD * pmeth,int (** psignctx_init)(EVP_PKEY_CTX * ctx,EVP_MD_CTX * mctx),int (** psignctx)(EVP_PKEY_CTX * ctx,unsigned char * sig,size_t * siglen,EVP_MD_CTX * mctx))2014 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
2015                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
2016                                                       EVP_MD_CTX *mctx),
2017                                int (**psignctx) (EVP_PKEY_CTX *ctx,
2018                                                  unsigned char *sig,
2019                                                  size_t *siglen,
2020                                                  EVP_MD_CTX *mctx))
2021 {
2022     if (psignctx_init)
2023         *psignctx_init = pmeth->signctx_init;
2024     if (psignctx)
2025         *psignctx = pmeth->signctx;
2026 }
2027 
EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD * pmeth,int (** pverifyctx_init)(EVP_PKEY_CTX * ctx,EVP_MD_CTX * mctx),int (** pverifyctx)(EVP_PKEY_CTX * ctx,const unsigned char * sig,int siglen,EVP_MD_CTX * mctx))2028 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
2029                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
2030                                                           EVP_MD_CTX *mctx),
2031                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
2032                                                      const unsigned char *sig,
2033                                                      int siglen,
2034                                                      EVP_MD_CTX *mctx))
2035 {
2036     if (pverifyctx_init)
2037         *pverifyctx_init = pmeth->verifyctx_init;
2038     if (pverifyctx)
2039         *pverifyctx = pmeth->verifyctx;
2040 }
2041 
EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD * pmeth,int (** pencrypt_init)(EVP_PKEY_CTX * ctx),int (** pencryptfn)(EVP_PKEY_CTX * ctx,unsigned char * out,size_t * outlen,const unsigned char * in,size_t inlen))2042 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
2043                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
2044                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
2045                                                    unsigned char *out,
2046                                                    size_t *outlen,
2047                                                    const unsigned char *in,
2048                                                    size_t inlen))
2049 {
2050     if (pencrypt_init)
2051         *pencrypt_init = pmeth->encrypt_init;
2052     if (pencryptfn)
2053         *pencryptfn = pmeth->encrypt;
2054 }
2055 
EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD * pmeth,int (** pdecrypt_init)(EVP_PKEY_CTX * ctx),int (** pdecrypt)(EVP_PKEY_CTX * ctx,unsigned char * out,size_t * outlen,const unsigned char * in,size_t inlen))2056 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
2057                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
2058                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
2059                                                  unsigned char *out,
2060                                                  size_t *outlen,
2061                                                  const unsigned char *in,
2062                                                  size_t inlen))
2063 {
2064     if (pdecrypt_init)
2065         *pdecrypt_init = pmeth->decrypt_init;
2066     if (pdecrypt)
2067         *pdecrypt = pmeth->decrypt;
2068 }
2069 
EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD * pmeth,int (** pderive_init)(EVP_PKEY_CTX * ctx),int (** pderive)(EVP_PKEY_CTX * ctx,unsigned char * key,size_t * keylen))2070 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
2071                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
2072                               int (**pderive) (EVP_PKEY_CTX *ctx,
2073                                                unsigned char *key,
2074                                                size_t *keylen))
2075 {
2076     if (pderive_init)
2077         *pderive_init = pmeth->derive_init;
2078     if (pderive)
2079         *pderive = pmeth->derive;
2080 }
2081 
EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD * pmeth,int (** pctrl)(EVP_PKEY_CTX * ctx,int type,int p1,void * p2),int (** pctrl_str)(EVP_PKEY_CTX * ctx,const char * type,const char * value))2082 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
2083                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
2084                                            void *p2),
2085                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
2086                                                const char *type,
2087                                                const char *value))
2088 {
2089     if (pctrl)
2090         *pctrl = pmeth->ctrl;
2091     if (pctrl_str)
2092         *pctrl_str = pmeth->ctrl_str;
2093 }
2094 
EVP_PKEY_meth_get_digestsign(const EVP_PKEY_METHOD * pmeth,int (** digestsign)(EVP_MD_CTX * ctx,unsigned char * sig,size_t * siglen,const unsigned char * tbs,size_t tbslen))2095 void EVP_PKEY_meth_get_digestsign(const EVP_PKEY_METHOD *pmeth,
2096     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
2097                         const unsigned char *tbs, size_t tbslen))
2098 {
2099     if (digestsign)
2100         *digestsign = pmeth->digestsign;
2101 }
2102 
EVP_PKEY_meth_get_digestverify(const EVP_PKEY_METHOD * pmeth,int (** digestverify)(EVP_MD_CTX * ctx,const unsigned char * sig,size_t siglen,const unsigned char * tbs,size_t tbslen))2103 void EVP_PKEY_meth_get_digestverify(const EVP_PKEY_METHOD *pmeth,
2104     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
2105                           size_t siglen, const unsigned char *tbs,
2106                           size_t tbslen))
2107 {
2108     if (digestverify)
2109         *digestverify = pmeth->digestverify;
2110 }
2111 
EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD * pmeth,int (** pcheck)(EVP_PKEY * pkey))2112 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
2113                              int (**pcheck) (EVP_PKEY *pkey))
2114 {
2115     if (pcheck != NULL)
2116         *pcheck = pmeth->check;
2117 }
2118 
EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD * pmeth,int (** pcheck)(EVP_PKEY * pkey))2119 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
2120                                     int (**pcheck) (EVP_PKEY *pkey))
2121 {
2122     if (pcheck != NULL)
2123         *pcheck = pmeth->public_check;
2124 }
2125 
EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD * pmeth,int (** pcheck)(EVP_PKEY * pkey))2126 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
2127                                    int (**pcheck) (EVP_PKEY *pkey))
2128 {
2129     if (pcheck != NULL)
2130         *pcheck = pmeth->param_check;
2131 }
2132 
EVP_PKEY_meth_get_digest_custom(const EVP_PKEY_METHOD * pmeth,int (** pdigest_custom)(EVP_PKEY_CTX * ctx,EVP_MD_CTX * mctx))2133 void EVP_PKEY_meth_get_digest_custom(const EVP_PKEY_METHOD *pmeth,
2134                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
2135                                                              EVP_MD_CTX *mctx))
2136 {
2137     if (pdigest_custom != NULL)
2138         *pdigest_custom = pmeth->digest_custom;
2139 }
2140 
2141 #endif /* FIPS_MODULE */
2142