xref: /freebsd/crypto/openssl/include/crypto/evp.h (revision e7be843b4a162e68651d3911f0357ed464915629)
1 /*
2  * Copyright 2015-2025 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 #ifndef OSSL_CRYPTO_EVP_H
11 # define OSSL_CRYPTO_EVP_H
12 # pragma once
13 
14 # include <openssl/evp.h>
15 # include <openssl/core_dispatch.h>
16 # include "internal/refcount.h"
17 # include "crypto/ecx.h"
18 
19 /*
20  * Default PKCS5 PBE KDF salt lengths
21  * In RFC 8018, PBE1 uses 8 bytes (64 bits) for its salt length.
22  * It also specifies to use at least 8 bytes for PBES2.
23  * The NIST requirement for PBKDF2 is 128 bits so we use this as the
24  * default for PBE2 (scrypt and HKDF2)
25  */
26 # define PKCS5_DEFAULT_PBE1_SALT_LEN     PKCS5_SALT_LEN
27 # define PKCS5_DEFAULT_PBE2_SALT_LEN     16
28 /*
29  * Don't free up md_ctx->pctx in EVP_MD_CTX_reset, use the reserved flag
30  * values in evp.h
31  */
32 #define EVP_MD_CTX_FLAG_KEEP_PKEY_CTX   0x0400
33 #define EVP_MD_CTX_FLAG_FINALISED       0x0800
34 
35 #define evp_pkey_ctx_is_legacy(ctx)                             \
36     ((ctx)->keymgmt == NULL)
37 #define evp_pkey_ctx_is_provided(ctx)                           \
38     (!evp_pkey_ctx_is_legacy(ctx))
39 
40 struct evp_pkey_ctx_st {
41     /* Actual operation */
42     int operation;
43 
44     /*
45      * Library context, property query, keytype and keymgmt associated with
46      * this context
47      */
48     OSSL_LIB_CTX *libctx;
49     char *propquery;
50     const char *keytype;
51     /* If |pkey| below is set, this field is always a reference to its keymgmt */
52     EVP_KEYMGMT *keymgmt;
53 
54     union {
55         struct {
56             void *genctx;
57         } keymgmt;
58 
59         struct {
60             EVP_KEYEXCH *exchange;
61             /*
62              * Opaque ctx returned from a providers exchange algorithm
63              * implementation OSSL_FUNC_keyexch_newctx()
64              */
65             void *algctx;
66         } kex;
67 
68         struct {
69             EVP_SIGNATURE *signature;
70             /*
71              * Opaque ctx returned from a providers signature algorithm
72              * implementation OSSL_FUNC_signature_newctx()
73              */
74             void *algctx;
75         } sig;
76 
77         struct {
78             EVP_ASYM_CIPHER *cipher;
79             /*
80              * Opaque ctx returned from a providers asymmetric cipher algorithm
81              * implementation OSSL_FUNC_asym_cipher_newctx()
82              */
83             void *algctx;
84         } ciph;
85         struct {
86             EVP_KEM *kem;
87             /*
88              * Opaque ctx returned from a providers KEM algorithm
89              * implementation OSSL_FUNC_kem_newctx()
90              */
91             void *algctx;
92         } encap;
93     } op;
94 
95     /*
96      * Cached parameters.  Inits of operations that depend on these should
97      * call evp_pkey_ctx_use_delayed_data() when the operation has been set
98      * up properly.
99      */
100     struct {
101         /* Distinguishing Identifier, ISO/IEC 15946-3, FIPS 196 */
102         char *dist_id_name; /* The name used with EVP_PKEY_CTX_ctrl_str() */
103         void *dist_id;      /* The distinguishing ID itself */
104         size_t dist_id_len; /* The length of the distinguishing ID */
105 
106         /* Indicators of what has been set.  Keep them together! */
107         unsigned int dist_id_set : 1;
108     } cached_parameters;
109 
110     /* Application specific data, usually used by the callback */
111     void *app_data;
112     /* Keygen callback */
113     EVP_PKEY_gen_cb *pkey_gencb;
114     /* implementation specific keygen data */
115     int *keygen_info;
116     int keygen_info_count;
117 
118     /* Legacy fields below */
119 
120     /* EVP_PKEY identity */
121     int legacy_keytype;
122     /* Method associated with this operation */
123     const EVP_PKEY_METHOD *pmeth;
124     /* Engine that implements this method or NULL if builtin */
125     ENGINE *engine;
126     /* Key: may be NULL */
127     EVP_PKEY *pkey;
128     /* Peer key for key agreement, may be NULL */
129     EVP_PKEY *peerkey;
130     /* Algorithm specific data */
131     void *data;
132     /* Indicator if digest_custom needs to be called */
133     unsigned int flag_call_digest_custom:1;
134     /*
135      * Used to support taking custody of memory in the case of a provider being
136      * used with the deprecated EVP_PKEY_CTX_set_rsa_keygen_pubexp() API. This
137      * member should NOT be used for any other purpose and should be removed
138      * when said deprecated API is excised completely.
139      */
140     BIGNUM *rsa_pubexp;
141 } /* EVP_PKEY_CTX */ ;
142 
143 #define EVP_PKEY_FLAG_DYNAMIC   1
144 
145 struct evp_pkey_method_st {
146     int pkey_id;
147     int flags;
148     int (*init) (EVP_PKEY_CTX *ctx);
149     int (*copy) (EVP_PKEY_CTX *dst, const EVP_PKEY_CTX *src);
150     void (*cleanup) (EVP_PKEY_CTX *ctx);
151     int (*paramgen_init) (EVP_PKEY_CTX *ctx);
152     int (*paramgen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
153     int (*keygen_init) (EVP_PKEY_CTX *ctx);
154     int (*keygen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
155     int (*sign_init) (EVP_PKEY_CTX *ctx);
156     int (*sign) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
157                  const unsigned char *tbs, size_t tbslen);
158     int (*verify_init) (EVP_PKEY_CTX *ctx);
159     int (*verify) (EVP_PKEY_CTX *ctx,
160                    const unsigned char *sig, size_t siglen,
161                    const unsigned char *tbs, size_t tbslen);
162     int (*verify_recover_init) (EVP_PKEY_CTX *ctx);
163     int (*verify_recover) (EVP_PKEY_CTX *ctx,
164                            unsigned char *rout, size_t *routlen,
165                            const unsigned char *sig, size_t siglen);
166     int (*signctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
167     int (*signctx) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
168                     EVP_MD_CTX *mctx);
169     int (*verifyctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
170     int (*verifyctx) (EVP_PKEY_CTX *ctx, const unsigned char *sig, int siglen,
171                       EVP_MD_CTX *mctx);
172     int (*encrypt_init) (EVP_PKEY_CTX *ctx);
173     int (*encrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
174                     const unsigned char *in, size_t inlen);
175     int (*decrypt_init) (EVP_PKEY_CTX *ctx);
176     int (*decrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
177                     const unsigned char *in, size_t inlen);
178     int (*derive_init) (EVP_PKEY_CTX *ctx);
179     int (*derive) (EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
180     int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
181     int (*ctrl_str) (EVP_PKEY_CTX *ctx, const char *type, const char *value);
182     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
183                        const unsigned char *tbs, size_t tbslen);
184     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
185                          size_t siglen, const unsigned char *tbs,
186                          size_t tbslen);
187     int (*check) (EVP_PKEY *pkey);
188     int (*public_check) (EVP_PKEY *pkey);
189     int (*param_check) (EVP_PKEY *pkey);
190 
191     int (*digest_custom) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
192 } /* EVP_PKEY_METHOD */ ;
193 
194 DEFINE_STACK_OF_CONST(EVP_PKEY_METHOD)
195 
196 void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx);
197 
198 const EVP_PKEY_METHOD *ossl_dh_pkey_method(void);
199 const EVP_PKEY_METHOD *ossl_dhx_pkey_method(void);
200 const EVP_PKEY_METHOD *ossl_dsa_pkey_method(void);
201 const EVP_PKEY_METHOD *ossl_ec_pkey_method(void);
202 const EVP_PKEY_METHOD *ossl_ecx25519_pkey_method(void);
203 const EVP_PKEY_METHOD *ossl_ecx448_pkey_method(void);
204 const EVP_PKEY_METHOD *ossl_ed25519_pkey_method(void);
205 const EVP_PKEY_METHOD *ossl_ed448_pkey_method(void);
206 const EVP_PKEY_METHOD *ossl_rsa_pkey_method(void);
207 const EVP_PKEY_METHOD *ossl_rsa_pss_pkey_method(void);
208 
209 struct evp_mac_st {
210     OSSL_PROVIDER *prov;
211     int name_id;
212     char *type_name;
213     const char *description;
214 
215     CRYPTO_REF_COUNT refcnt;
216 
217     OSSL_FUNC_mac_newctx_fn *newctx;
218     OSSL_FUNC_mac_dupctx_fn *dupctx;
219     OSSL_FUNC_mac_freectx_fn *freectx;
220     OSSL_FUNC_mac_init_fn *init;
221     OSSL_FUNC_mac_update_fn *update;
222     OSSL_FUNC_mac_final_fn *final;
223     OSSL_FUNC_mac_gettable_params_fn *gettable_params;
224     OSSL_FUNC_mac_gettable_ctx_params_fn *gettable_ctx_params;
225     OSSL_FUNC_mac_settable_ctx_params_fn *settable_ctx_params;
226     OSSL_FUNC_mac_get_params_fn *get_params;
227     OSSL_FUNC_mac_get_ctx_params_fn *get_ctx_params;
228     OSSL_FUNC_mac_set_ctx_params_fn *set_ctx_params;
229     OSSL_FUNC_mac_init_skey_fn *init_skey;
230 };
231 
232 struct evp_kdf_st {
233     OSSL_PROVIDER *prov;
234     int name_id;
235     char *type_name;
236     const char *description;
237     CRYPTO_REF_COUNT refcnt;
238 
239     OSSL_FUNC_kdf_newctx_fn *newctx;
240     OSSL_FUNC_kdf_dupctx_fn *dupctx;
241     OSSL_FUNC_kdf_freectx_fn *freectx;
242     OSSL_FUNC_kdf_reset_fn *reset;
243     OSSL_FUNC_kdf_derive_fn *derive;
244     OSSL_FUNC_kdf_gettable_params_fn *gettable_params;
245     OSSL_FUNC_kdf_gettable_ctx_params_fn *gettable_ctx_params;
246     OSSL_FUNC_kdf_settable_ctx_params_fn *settable_ctx_params;
247     OSSL_FUNC_kdf_get_params_fn *get_params;
248     OSSL_FUNC_kdf_get_ctx_params_fn *get_ctx_params;
249     OSSL_FUNC_kdf_set_ctx_params_fn *set_ctx_params;
250 };
251 
252 #define EVP_ORIG_DYNAMIC    0
253 #define EVP_ORIG_GLOBAL     1
254 #define EVP_ORIG_METH       2
255 
256 struct evp_md_st {
257     /* nid */
258     int type;
259 
260     /* Legacy structure members */
261     int pkey_type;
262     int md_size;
263     unsigned long flags;
264     int origin;
265     int (*init) (EVP_MD_CTX *ctx);
266     int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
267     int (*final) (EVP_MD_CTX *ctx, unsigned char *md);
268     int (*copy) (EVP_MD_CTX *to, const EVP_MD_CTX *from);
269     int (*cleanup) (EVP_MD_CTX *ctx);
270     int block_size;
271     int ctx_size;               /* how big does the ctx->md_data need to be */
272     /* control function */
273     int (*md_ctrl) (EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
274 
275     /* New structure members */
276     /* Above comment to be removed when legacy has gone */
277     int name_id;
278     char *type_name;
279     const char *description;
280     OSSL_PROVIDER *prov;
281     CRYPTO_REF_COUNT refcnt;
282     OSSL_FUNC_digest_newctx_fn *newctx;
283     OSSL_FUNC_digest_init_fn *dinit;
284     OSSL_FUNC_digest_update_fn *dupdate;
285     OSSL_FUNC_digest_final_fn *dfinal;
286     OSSL_FUNC_digest_squeeze_fn *dsqueeze;
287     OSSL_FUNC_digest_digest_fn *digest;
288     OSSL_FUNC_digest_freectx_fn *freectx;
289     OSSL_FUNC_digest_copyctx_fn *copyctx;
290     OSSL_FUNC_digest_dupctx_fn *dupctx;
291     OSSL_FUNC_digest_get_params_fn *get_params;
292     OSSL_FUNC_digest_set_ctx_params_fn *set_ctx_params;
293     OSSL_FUNC_digest_get_ctx_params_fn *get_ctx_params;
294     OSSL_FUNC_digest_gettable_params_fn *gettable_params;
295     OSSL_FUNC_digest_settable_ctx_params_fn *settable_ctx_params;
296     OSSL_FUNC_digest_gettable_ctx_params_fn *gettable_ctx_params;
297 
298 } /* EVP_MD */ ;
299 
300 struct evp_cipher_st {
301     int nid;
302 
303     int block_size;
304     /* Default value for variable length ciphers */
305     int key_len;
306     int iv_len;
307 
308     /* Legacy structure members */
309     /* Various flags */
310     unsigned long flags;
311     /* How the EVP_CIPHER was created. */
312     int origin;
313     /* init key */
314     int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
315                  const unsigned char *iv, int enc);
316     /* encrypt/decrypt data */
317     int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out,
318                       const unsigned char *in, size_t inl);
319     /* cleanup ctx */
320     int (*cleanup) (EVP_CIPHER_CTX *);
321     /* how big ctx->cipher_data needs to be */
322     int ctx_size;
323     /* Populate a ASN1_TYPE with parameters */
324     int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
325     /* Get parameters from a ASN1_TYPE */
326     int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
327     /* Miscellaneous operations */
328     int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr);
329     /* Application data */
330     void *app_data;
331 
332     /* New structure members */
333     /* Above comment to be removed when legacy has gone */
334     int name_id;
335     char *type_name;
336     const char *description;
337     OSSL_PROVIDER *prov;
338     CRYPTO_REF_COUNT refcnt;
339     OSSL_FUNC_cipher_newctx_fn *newctx;
340     OSSL_FUNC_cipher_encrypt_init_fn *einit;
341     OSSL_FUNC_cipher_decrypt_init_fn *dinit;
342     OSSL_FUNC_cipher_update_fn *cupdate;
343     OSSL_FUNC_cipher_final_fn *cfinal;
344     OSSL_FUNC_cipher_cipher_fn *ccipher;
345     OSSL_FUNC_cipher_pipeline_encrypt_init_fn *p_einit;
346     OSSL_FUNC_cipher_pipeline_decrypt_init_fn *p_dinit;
347     OSSL_FUNC_cipher_pipeline_update_fn *p_cupdate;
348     OSSL_FUNC_cipher_pipeline_final_fn *p_cfinal;
349     OSSL_FUNC_cipher_freectx_fn *freectx;
350     OSSL_FUNC_cipher_dupctx_fn *dupctx;
351     OSSL_FUNC_cipher_get_params_fn *get_params;
352     OSSL_FUNC_cipher_get_ctx_params_fn *get_ctx_params;
353     OSSL_FUNC_cipher_set_ctx_params_fn *set_ctx_params;
354     OSSL_FUNC_cipher_gettable_params_fn *gettable_params;
355     OSSL_FUNC_cipher_gettable_ctx_params_fn *gettable_ctx_params;
356     OSSL_FUNC_cipher_settable_ctx_params_fn *settable_ctx_params;
357     OSSL_FUNC_cipher_encrypt_skey_init_fn *einit_skey;
358     OSSL_FUNC_cipher_decrypt_skey_init_fn *dinit_skey;
359 } /* EVP_CIPHER */;
360 
361 /* Macros to code block cipher wrappers */
362 
363 /* Wrapper functions for each cipher mode */
364 
365 #define EVP_C_DATA(kstruct, ctx) \
366         ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx))
367 
368 #define BLOCK_CIPHER_ecb_loop() \
369         size_t i, bl; \
370         bl = EVP_CIPHER_CTX_get0_cipher(ctx)->block_size;    \
371         if (inl < bl) return 1;\
372         inl -= bl; \
373         for (i=0; i <= inl; i+=bl)
374 
375 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
376 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
377 {\
378         BLOCK_CIPHER_ecb_loop() \
379             cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_is_encrypting(ctx)); \
380         return 1;\
381 }
382 
383 #define EVP_MAXCHUNK ((size_t)1 << 30)
384 
385 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
386     static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
387 {\
388         while(inl>=EVP_MAXCHUNK) {\
389             int num = EVP_CIPHER_CTX_get_num(ctx);\
390             cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, &num); \
391             EVP_CIPHER_CTX_set_num(ctx, num);\
392             inl-=EVP_MAXCHUNK;\
393             in +=EVP_MAXCHUNK;\
394             out+=EVP_MAXCHUNK;\
395         }\
396         if (inl) {\
397             int num = EVP_CIPHER_CTX_get_num(ctx);\
398             cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, &num); \
399             EVP_CIPHER_CTX_set_num(ctx, num);\
400         }\
401         return 1;\
402 }
403 
404 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
405 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
406 {\
407         while(inl>=EVP_MAXCHUNK) {\
408             cprefix##_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, EVP_CIPHER_CTX_is_encrypting(ctx));\
409             inl-=EVP_MAXCHUNK;\
410             in +=EVP_MAXCHUNK;\
411             out+=EVP_MAXCHUNK;\
412         }\
413         if (inl)\
414             cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, EVP_CIPHER_CTX_is_encrypting(ctx));\
415         return 1;\
416 }
417 
418 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched)  \
419 static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
420 {\
421     size_t chunk = EVP_MAXCHUNK;\
422     if (cbits == 1)  chunk >>= 3;\
423     if (inl < chunk) chunk = inl;\
424     while (inl && inl >= chunk) {\
425         int num = EVP_CIPHER_CTX_get_num(ctx);\
426         cprefix##_cfb##cbits##_encrypt(in, out, (long) \
427             ((cbits == 1) \
428                 && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \
429                 ? chunk*8 : chunk), \
430             &EVP_C_DATA(kstruct, ctx)->ksched, ctx->iv,\
431             &num, EVP_CIPHER_CTX_is_encrypting(ctx));\
432         EVP_CIPHER_CTX_set_num(ctx, num);\
433         inl -= chunk;\
434         in += chunk;\
435         out += chunk;\
436         if (inl < chunk) chunk = inl;\
437     }\
438     return 1;\
439 }
440 
441 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
442         BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
443         BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
444         BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
445         BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
446 
447 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
448                           key_len, iv_len, flags, init_key, cleanup, \
449                           set_asn1, get_asn1, ctrl) \
450 static const EVP_CIPHER cname##_##mode = { \
451         nid##_##nmode, block_size, key_len, iv_len, \
452         flags | EVP_CIPH_##MODE##_MODE, \
453         EVP_ORIG_GLOBAL, \
454         init_key, \
455         cname##_##mode##_cipher, \
456         cleanup, \
457         sizeof(kstruct), \
458         set_asn1, get_asn1,\
459         ctrl, \
460         NULL \
461 }; \
462 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
463 
464 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
465                              iv_len, flags, init_key, cleanup, set_asn1, \
466                              get_asn1, ctrl) \
467 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
468                   iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
469 
470 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
471                              iv_len, cbits, flags, init_key, cleanup, \
472                              set_asn1, get_asn1, ctrl) \
473 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
474                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
475                   get_asn1, ctrl)
476 
477 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
478                              iv_len, cbits, flags, init_key, cleanup, \
479                              set_asn1, get_asn1, ctrl) \
480 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
481                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
482                   get_asn1, ctrl)
483 
484 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
485                              flags, init_key, cleanup, set_asn1, \
486                              get_asn1, ctrl) \
487 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
488                   0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
489 
490 #define BLOCK_CIPHER_defs(cname, kstruct, \
491                           nid, block_size, key_len, iv_len, cbits, flags, \
492                           init_key, cleanup, set_asn1, get_asn1, ctrl) \
493 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
494                      init_key, cleanup, set_asn1, get_asn1, ctrl) \
495 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
496                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
497 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
498                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
499 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
500                      init_key, cleanup, set_asn1, get_asn1, ctrl)
501 
502 /*-
503 #define BLOCK_CIPHER_defs(cname, kstruct, \
504                                 nid, block_size, key_len, iv_len, flags,\
505                                  init_key, cleanup, set_asn1, get_asn1, ctrl)\
506 static const EVP_CIPHER cname##_cbc = {\
507         nid##_cbc, block_size, key_len, iv_len, \
508         flags | EVP_CIPH_CBC_MODE,\
509         EVP_ORIG_GLOBAL,\
510         init_key,\
511         cname##_cbc_cipher,\
512         cleanup,\
513         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
514                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
515         set_asn1, get_asn1,\
516         ctrl, \
517         NULL \
518 };\
519 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
520 static const EVP_CIPHER cname##_cfb = {\
521         nid##_cfb64, 1, key_len, iv_len, \
522         flags | EVP_CIPH_CFB_MODE,\
523         EVP_ORIG_GLOBAL,\
524         init_key,\
525         cname##_cfb_cipher,\
526         cleanup,\
527         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
528                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
529         set_asn1, get_asn1,\
530         ctrl,\
531         NULL \
532 };\
533 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
534 static const EVP_CIPHER cname##_ofb = {\
535         nid##_ofb64, 1, key_len, iv_len, \
536         flags | EVP_CIPH_OFB_MODE,\
537         EVP_ORIG_GLOBAL,\
538         init_key,\
539         cname##_ofb_cipher,\
540         cleanup,\
541         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
542                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
543         set_asn1, get_asn1,\
544         ctrl,\
545         NULL \
546 };\
547 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
548 static const EVP_CIPHER cname##_ecb = {\
549         nid##_ecb, block_size, key_len, iv_len, \
550         flags | EVP_CIPH_ECB_MODE,\
551         EVP_ORIG_GLOBAL,\
552         init_key,\
553         cname##_ecb_cipher,\
554         cleanup,\
555         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
556                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
557         set_asn1, get_asn1,\
558         ctrl,\
559         NULL \
560 };\
561 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
562 */
563 
564 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
565                                block_size, key_len, iv_len, cbits, \
566                                flags, init_key, \
567                                cleanup, set_asn1, get_asn1, ctrl) \
568         BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
569         BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
570                           cbits, flags, init_key, cleanup, set_asn1, \
571                           get_asn1, ctrl)
572 
573 #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
574         BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
575         BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
576                              NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
577                              (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
578                              cipher##_init_key, NULL, NULL, NULL, NULL)
579 
580 typedef struct {
581     unsigned char iv[EVP_MAX_IV_LENGTH];
582     unsigned int iv_len;
583     unsigned int tag_len;
584 } evp_cipher_aead_asn1_params;
585 
586 int evp_cipher_param_to_asn1_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
587                                 evp_cipher_aead_asn1_params *params);
588 
589 int evp_cipher_asn1_to_param_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
590                                 evp_cipher_aead_asn1_params *params);
591 
592 /*
593  * To support transparent execution of operation in backends other
594  * than the "origin" key, we support transparent export/import to
595  * those providers, and maintain a cache of the imported keydata,
596  * so we don't need to redo the export/import every time we perform
597  * the same operation in that same provider.
598  * This requires that the "origin" backend (whether it's a legacy or a
599  * provider "origin") implements exports, and that the target provider
600  * has an EVP_KEYMGMT that implements import.
601  */
602 typedef struct {
603     EVP_KEYMGMT *keymgmt;
604     void *keydata;
605     int selection;
606 } OP_CACHE_ELEM;
607 
608 DEFINE_STACK_OF(OP_CACHE_ELEM)
609 
610 /*
611  * An EVP_PKEY can have the following states:
612  *
613  * untyped & empty:
614  *
615  *     type == EVP_PKEY_NONE && keymgmt == NULL
616  *
617  * typed & empty:
618  *
619  *     (type != EVP_PKEY_NONE && pkey.ptr == NULL)      ## legacy (libcrypto only)
620  *     || (keymgmt != NULL && keydata == NULL)          ## provider side
621  *
622  * fully assigned:
623  *
624  *     (type != EVP_PKEY_NONE && pkey.ptr != NULL)      ## legacy (libcrypto only)
625  *     || (keymgmt != NULL && keydata != NULL)          ## provider side
626  *
627  * The easiest way to detect a legacy key is:
628  *
629  *     keymgmt == NULL && type != EVP_PKEY_NONE
630  *
631  * The easiest way to detect a provider side key is:
632  *
633  *     keymgmt != NULL
634  */
635 #define evp_pkey_is_blank(pk)                                   \
636     ((pk)->type == EVP_PKEY_NONE && (pk)->keymgmt == NULL)
637 #define evp_pkey_is_typed(pk)                                   \
638     ((pk)->type != EVP_PKEY_NONE || (pk)->keymgmt != NULL)
639 #ifndef FIPS_MODULE
640 # define evp_pkey_is_assigned(pk)                               \
641     ((pk)->pkey.ptr != NULL || (pk)->keydata != NULL)
642 #else
643 # define evp_pkey_is_assigned(pk)                               \
644     ((pk)->keydata != NULL)
645 #endif
646 #define evp_pkey_is_legacy(pk)                                  \
647     ((pk)->type != EVP_PKEY_NONE && (pk)->keymgmt == NULL)
648 #define evp_pkey_is_provided(pk)                                \
649     ((pk)->keymgmt != NULL)
650 
651 union legacy_pkey_st {
652     void *ptr;
653     struct rsa_st *rsa;     /* RSA */
654 #  ifndef OPENSSL_NO_DSA
655     struct dsa_st *dsa;     /* DSA */
656 #  endif
657 #  ifndef OPENSSL_NO_DH
658     struct dh_st *dh;       /* DH */
659 #  endif
660 #  ifndef OPENSSL_NO_EC
661     struct ec_key_st *ec;   /* ECC */
662 #   ifndef OPENSSL_NO_ECX
663     ECX_KEY *ecx;           /* X25519, X448, Ed25519, Ed448 */
664 #   endif
665 #  endif
666 };
667 
668 struct evp_pkey_st {
669     /* == Legacy attributes == */
670     int type;
671     int save_type;
672 
673 # ifndef FIPS_MODULE
674     /*
675      * Legacy key "origin" is composed of a pointer to an EVP_PKEY_ASN1_METHOD,
676      * a pointer to a low level key and possibly a pointer to an engine.
677      */
678     const EVP_PKEY_ASN1_METHOD *ameth;
679     ENGINE *engine;
680     ENGINE *pmeth_engine; /* If not NULL public key ENGINE to use */
681 
682     /* Union to store the reference to an origin legacy key */
683     union legacy_pkey_st pkey;
684 
685     /* Union to store the reference to a non-origin legacy key */
686     union legacy_pkey_st legacy_cache_pkey;
687 # endif
688 
689     /* == Common attributes == */
690     CRYPTO_REF_COUNT references;
691     CRYPTO_RWLOCK *lock;
692 #ifndef FIPS_MODULE
693     STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
694     int save_parameters;
695     unsigned int foreign:1; /* the low-level key is using an engine or an app-method */
696     CRYPTO_EX_DATA ex_data;
697 #endif
698 
699     /* == Provider attributes == */
700 
701     /*
702      * Provider keydata "origin" is composed of a pointer to an EVP_KEYMGMT
703      * and a pointer to the provider side key data.  This is never used at
704      * the same time as the legacy key data above.
705      */
706     EVP_KEYMGMT *keymgmt;
707     void *keydata;
708     /*
709      * If any libcrypto code does anything that may modify the keydata
710      * contents, this dirty counter must be incremented.
711      */
712     size_t dirty_cnt;
713 
714     /*
715      * To support transparent execution of operation in backends other
716      * than the "origin" key, we support transparent export/import to
717      * those providers, and maintain a cache of the imported keydata,
718      * so we don't need to redo the export/import every time we perform
719      * the same operation in that same provider.
720      */
721     STACK_OF(OP_CACHE_ELEM) *operation_cache;
722 
723     /*
724      * We keep a copy of that "origin"'s dirty count, so we know if the
725      * operation cache needs flushing.
726      */
727     size_t dirty_cnt_copy;
728 
729     /* Cache of key object information */
730     struct {
731         int bits;
732         int security_bits;
733         int size;
734     } cache;
735 }; /* EVP_PKEY */
736 
737 /* The EVP_PKEY_OP_TYPE_ macros are found in include/openssl/evp.h */
738 
739 # define EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) \
740     (((ctx)->operation & EVP_PKEY_OP_TYPE_SIG) != 0)
741 
742 # define EVP_PKEY_CTX_IS_DERIVE_OP(ctx) \
743     (((ctx)->operation & EVP_PKEY_OP_TYPE_DERIVE) != 0)
744 
745 # define EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) \
746     (((ctx)->operation & EVP_PKEY_OP_TYPE_CRYPT) != 0)
747 
748 # define EVP_PKEY_CTX_IS_GEN_OP(ctx) \
749     (((ctx)->operation & EVP_PKEY_OP_TYPE_GEN) != 0)
750 
751 # define EVP_PKEY_CTX_IS_FROMDATA_OP(ctx) \
752     (((ctx)->operation & EVP_PKEY_OP_TYPE_DATA) != 0)
753 
754 # define EVP_PKEY_CTX_IS_KEM_OP(ctx) \
755     (((ctx)->operation & EVP_PKEY_OP_TYPE_KEM) != 0)
756 
757 struct evp_skey_st {
758     /* == Common attributes == */
759     CRYPTO_REF_COUNT references;
760     CRYPTO_RWLOCK *lock;
761 
762     void *keydata; /* Alg-specific key data */
763     EVP_SKEYMGMT *skeymgmt; /* Import, export, manage */
764 }; /* EVP_SKEY */
765 
766 void openssl_add_all_ciphers_int(void);
767 void openssl_add_all_digests_int(void);
768 void evp_cleanup_int(void);
769 void evp_app_cleanup_int(void);
770 void *evp_pkey_export_to_provider(EVP_PKEY *pk, OSSL_LIB_CTX *libctx,
771                                   EVP_KEYMGMT **keymgmt,
772                                   const char *propquery);
773 #ifndef FIPS_MODULE
774 int evp_pkey_copy_downgraded(EVP_PKEY **dest, const EVP_PKEY *src);
775 void *evp_pkey_get_legacy(EVP_PKEY *pk);
776 void evp_pkey_free_legacy(EVP_PKEY *x);
777 EVP_PKEY *evp_pkcs82pkey_legacy(const PKCS8_PRIV_KEY_INFO *p8inf,
778                                 OSSL_LIB_CTX *libctx, const char *propq);
779 #endif
780 
781 /*
782  * KEYMGMT utility functions
783  */
784 
785 /*
786  * Key import structure and helper function, to be used as an export callback
787  */
788 struct evp_keymgmt_util_try_import_data_st {
789     EVP_KEYMGMT *keymgmt;
790     void *keydata;
791 
792     int selection;
793 };
794 int evp_keymgmt_util_try_import(const OSSL_PARAM params[], void *arg);
795 int evp_keymgmt_util_assign_pkey(EVP_PKEY *pkey, EVP_KEYMGMT *keymgmt,
796                                  void *keydata);
797 EVP_PKEY *evp_keymgmt_util_make_pkey(EVP_KEYMGMT *keymgmt, void *keydata);
798 
799 int evp_keymgmt_util_export(const EVP_PKEY *pk, int selection,
800                             OSSL_CALLBACK *export_cb, void *export_cbarg);
801 void *evp_keymgmt_util_export_to_provider(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt,
802                                           int selection);
803 OP_CACHE_ELEM *evp_keymgmt_util_find_operation_cache(EVP_PKEY *pk,
804                                                      EVP_KEYMGMT *keymgmt,
805                                                      int selection);
806 int evp_keymgmt_util_clear_operation_cache(EVP_PKEY *pk);
807 int evp_keymgmt_util_cache_keydata(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt,
808                                    void *keydata, int selection);
809 void evp_keymgmt_util_cache_keyinfo(EVP_PKEY *pk);
810 void *evp_keymgmt_util_fromdata(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
811                                 int selection, const OSSL_PARAM params[]);
812 int evp_keymgmt_util_has(EVP_PKEY *pk, int selection);
813 int evp_keymgmt_util_match(EVP_PKEY *pk1, EVP_PKEY *pk2, int selection);
814 int evp_keymgmt_util_copy(EVP_PKEY *to, EVP_PKEY *from, int selection);
815 void *evp_keymgmt_util_gen(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
816                            void *genctx, OSSL_CALLBACK *cb, void *cbarg);
817 int evp_keymgmt_util_get_deflt_digest_name(EVP_KEYMGMT *keymgmt,
818                                            void *keydata,
819                                            char *mdname, size_t mdname_sz);
820 const char *evp_keymgmt_util_query_operation_name(EVP_KEYMGMT *keymgmt,
821                                                   int op_id);
822 
823 /*
824  * KEYMGMT provider interface functions
825  */
826 void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt);
827 void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keyddata);
828 int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt,
829                            void *keydata, OSSL_PARAM params[]);
830 int evp_keymgmt_set_params(const EVP_KEYMGMT *keymgmt,
831                            void *keydata, const OSSL_PARAM params[]);
832 void *evp_keymgmt_gen_init(const EVP_KEYMGMT *keymgmt, int selection,
833                            const OSSL_PARAM params[]);
834 int evp_keymgmt_gen_set_template(const EVP_KEYMGMT *keymgmt, void *genctx,
835                                  void *templ);
836 int evp_keymgmt_gen_set_params(const EVP_KEYMGMT *keymgmt, void *genctx,
837                                const OSSL_PARAM params[]);
838 int evp_keymgmt_gen_get_params(const EVP_KEYMGMT *keymgmt,
839                                void *genctx, OSSL_PARAM params[]);
840 void *evp_keymgmt_gen(const EVP_KEYMGMT *keymgmt, void *genctx,
841                       OSSL_CALLBACK *cb, void *cbarg);
842 void evp_keymgmt_gen_cleanup(const EVP_KEYMGMT *keymgmt, void *genctx);
843 
844 int evp_keymgmt_has_load(const EVP_KEYMGMT *keymgmt);
845 void *evp_keymgmt_load(const EVP_KEYMGMT *keymgmt,
846                        const void *objref, size_t objref_sz);
847 
848 int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keyddata, int selection);
849 int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
850                          int selection, int checktype);
851 int evp_keymgmt_match(const EVP_KEYMGMT *keymgmt,
852                       const void *keydata1, const void *keydata2,
853                       int selection);
854 
855 int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
856                        int selection, const OSSL_PARAM params[]);
857 const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
858                                            int selection);
859 int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
860                        int selection, OSSL_CALLBACK *param_cb, void *cbarg);
861 const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
862                                            int selection);
863 void *evp_keymgmt_dup(const EVP_KEYMGMT *keymgmt,
864                       const void *keydata_from, int selection);
865 EVP_KEYMGMT *evp_keymgmt_fetch_from_prov(OSSL_PROVIDER *prov,
866                                          const char *name,
867                                          const char *properties);
868 
869 /*
870  * SKEYMGMT provider interface functions
871  */
872 void evp_skeymgmt_freedata(const EVP_SKEYMGMT *keymgmt, void *keyddata);
873 void *evp_skeymgmt_import(const EVP_SKEYMGMT *skeymgmt, int selection, const OSSL_PARAM params[]);
874 int evp_skeymgmt_export(const EVP_SKEYMGMT *skeymgmt, void *keydata,
875                         int selection, OSSL_CALLBACK *param_cb, void *cbarg);
876 void *evp_skeymgmt_generate(const EVP_SKEYMGMT *skeymgmt, const OSSL_PARAM params[]);
877 EVP_SKEYMGMT *evp_skeymgmt_fetch_from_prov(OSSL_PROVIDER *prov,
878                                            const char *name,
879                                            const char *properties);
880 
881 /* Pulling defines out of C source files */
882 
883 # define EVP_RC4_KEY_SIZE 16
884 # ifndef TLS1_1_VERSION
885 #  define TLS1_1_VERSION   0x0302
886 # endif
887 
888 void evp_encode_ctx_set_flags(EVP_ENCODE_CTX *ctx, unsigned int flags);
889 
890 /* EVP_ENCODE_CTX flags */
891 /* Don't generate new lines when encoding */
892 #define EVP_ENCODE_CTX_NO_NEWLINES          1
893 /* Use the SRP base64 alphabet instead of the standard one */
894 #define EVP_ENCODE_CTX_USE_SRP_ALPHABET     2
895 
896 const EVP_CIPHER *evp_get_cipherbyname_ex(OSSL_LIB_CTX *libctx,
897                                           const char *name);
898 const EVP_MD *evp_get_digestbyname_ex(OSSL_LIB_CTX *libctx,
899                                       const char *name);
900 
901 int ossl_pkcs5_pbkdf2_hmac_ex(const char *pass, int passlen,
902                               const unsigned char *salt, int saltlen, int iter,
903                               const EVP_MD *digest, int keylen,
904                               unsigned char *out,
905                               OSSL_LIB_CTX *libctx, const char *propq);
906 
907 # ifndef FIPS_MODULE
908 /*
909  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
910  *
911  * Return 1 on success, 0 or negative for errors.
912  *
913  * In particular they return -2 if any of the params is not supported.
914  *
915  * They are not available in FIPS_MODULE as they depend on
916  *      - EVP_PKEY_CTX_{get,set}_params()
917  *      - EVP_PKEY_CTX_{gettable,settable}_params()
918  *
919  */
920 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
921 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
922 
923 EVP_MD_CTX *evp_md_ctx_new_ex(EVP_PKEY *pkey, const ASN1_OCTET_STRING *id,
924                               OSSL_LIB_CTX *libctx, const char *propq);
925 int evp_pkey_name2type(const char *name);
926 const char *evp_pkey_type2name(int type);
927 
928 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx);
929 # endif /* !defined(FIPS_MODULE) */
930 
931 int evp_method_store_cache_flush(OSSL_LIB_CTX *libctx);
932 int evp_method_store_remove_all_provided(const OSSL_PROVIDER *prov);
933 
934 int evp_default_properties_enable_fips_int(OSSL_LIB_CTX *libctx, int enable,
935                                            int loadconfig);
936 int evp_set_default_properties_int(OSSL_LIB_CTX *libctx, const char *propq,
937                                    int loadconfig, int mirrored);
938 char *evp_get_global_properties_str(OSSL_LIB_CTX *libctx, int loadconfig);
939 
940 void evp_md_ctx_clear_digest(EVP_MD_CTX *ctx, int force, int keep_digest);
941 /* just free the algctx if set, returns 0 on inconsistent state of ctx */
942 int evp_md_ctx_free_algctx(EVP_MD_CTX *ctx);
943 
944 /* Three possible states: */
945 # define EVP_PKEY_STATE_UNKNOWN         0
946 # define EVP_PKEY_STATE_LEGACY          1
947 # define EVP_PKEY_STATE_PROVIDER        2
948 int evp_pkey_ctx_state(const EVP_PKEY_CTX *ctx);
949 
950 /* These two must ONLY be called for provider side operations */
951 int evp_pkey_ctx_ctrl_to_param(EVP_PKEY_CTX *ctx,
952                                int keytype, int optype,
953                                int cmd, int p1, void *p2);
954 int evp_pkey_ctx_ctrl_str_to_param(EVP_PKEY_CTX *ctx,
955                                    const char *name, const char *value);
956 
957 /* These two must ONLY be called for legacy operations */
958 int evp_pkey_ctx_set_params_to_ctrl(EVP_PKEY_CTX *ctx, const OSSL_PARAM *params);
959 int evp_pkey_ctx_get_params_to_ctrl(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
960 
961 /* This must ONLY be called for legacy EVP_PKEYs */
962 int evp_pkey_get_params_to_ctrl(const EVP_PKEY *pkey, OSSL_PARAM *params);
963 
964 /* Same as the public get0 functions but are not const */
965 # ifndef OPENSSL_NO_DEPRECATED_3_0
966 DH *evp_pkey_get0_DH_int(const EVP_PKEY *pkey);
967 EC_KEY *evp_pkey_get0_EC_KEY_int(const EVP_PKEY *pkey);
968 RSA *evp_pkey_get0_RSA_int(const EVP_PKEY *pkey);
969 # endif
970 
971 /* Get internal identification number routines */
972 int evp_asym_cipher_get_number(const EVP_ASYM_CIPHER *cipher);
973 int evp_cipher_get_number(const EVP_CIPHER *cipher);
974 int evp_kdf_get_number(const EVP_KDF *kdf);
975 int evp_kem_get_number(const EVP_KEM *wrap);
976 int evp_keyexch_get_number(const EVP_KEYEXCH *keyexch);
977 int evp_keymgmt_get_number(const EVP_KEYMGMT *keymgmt);
978 int evp_keymgmt_get_legacy_alg(const EVP_KEYMGMT *keymgmt);
979 int evp_mac_get_number(const EVP_MAC *mac);
980 int evp_md_get_number(const EVP_MD *md);
981 int evp_rand_get_number(const EVP_RAND *rand);
982 int evp_rand_can_seed(EVP_RAND_CTX *ctx);
983 size_t evp_rand_get_seed(EVP_RAND_CTX *ctx,
984                          unsigned char **buffer,
985                          int entropy, size_t min_len, size_t max_len,
986                          int prediction_resistance,
987                          const unsigned char *adin, size_t adin_len);
988 void evp_rand_clear_seed(EVP_RAND_CTX *ctx,
989                          unsigned char *buffer, size_t b_len);
990 int evp_signature_get_number(const EVP_SIGNATURE *signature);
991 
992 int evp_pkey_decrypt_alloc(EVP_PKEY_CTX *ctx, unsigned char **outp,
993                            size_t *outlenp, size_t expected_outlen,
994                            const unsigned char *in, size_t inlen);
995 
996 int ossl_md2hmacnid(int mdnid);
997 int ossl_hmac2mdnid(int hmac_nid);
998 
999 #endif /* OSSL_CRYPTO_EVP_H */
1000