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PKCS12_set_pbmac1_pbkdf2() fixups.
[thirdparty/openssl.git] / include / crypto / evp.h
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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
40struct 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
145struct 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
194DEFINE_STACK_OF_CONST(EVP_PKEY_METHOD)
195
196void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx);
197
198const EVP_PKEY_METHOD *ossl_dh_pkey_method(void);
199const EVP_PKEY_METHOD *ossl_dhx_pkey_method(void);
200const EVP_PKEY_METHOD *ossl_dsa_pkey_method(void);
201const EVP_PKEY_METHOD *ossl_ec_pkey_method(void);
202const EVP_PKEY_METHOD *ossl_ecx25519_pkey_method(void);
203const EVP_PKEY_METHOD *ossl_ecx448_pkey_method(void);
204const EVP_PKEY_METHOD *ossl_ed25519_pkey_method(void);
205const EVP_PKEY_METHOD *ossl_ed448_pkey_method(void);
206const EVP_PKEY_METHOD *ossl_rsa_pkey_method(void);
207const EVP_PKEY_METHOD *ossl_rsa_pss_pkey_method(void);
208
209struct 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
232struct 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 OSSL_FUNC_kdf_set_skey_fn *set_skey;
251 OSSL_FUNC_kdf_derive_skey_fn *derive_skey;
252};
253
254#define EVP_ORIG_DYNAMIC 0
255#define EVP_ORIG_GLOBAL 1
256#define EVP_ORIG_METH 2
257
258struct evp_md_st {
259 /* nid */
260 int type;
261
262 /* Legacy structure members */
263 int pkey_type;
264 int md_size;
265 unsigned long flags;
266 int origin;
267 int (*init) (EVP_MD_CTX *ctx);
268 int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
269 int (*final) (EVP_MD_CTX *ctx, unsigned char *md);
270 int (*copy) (EVP_MD_CTX *to, const EVP_MD_CTX *from);
271 int (*cleanup) (EVP_MD_CTX *ctx);
272 int block_size;
273 int ctx_size; /* how big does the ctx->md_data need to be */
274 /* control function */
275 int (*md_ctrl) (EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
276
277 /* New structure members */
278 /* Above comment to be removed when legacy has gone */
279 int name_id;
280 char *type_name;
281 const char *description;
282 OSSL_PROVIDER *prov;
283 CRYPTO_REF_COUNT refcnt;
284 OSSL_FUNC_digest_newctx_fn *newctx;
285 OSSL_FUNC_digest_init_fn *dinit;
286 OSSL_FUNC_digest_update_fn *dupdate;
287 OSSL_FUNC_digest_final_fn *dfinal;
288 OSSL_FUNC_digest_squeeze_fn *dsqueeze;
289 OSSL_FUNC_digest_digest_fn *digest;
290 OSSL_FUNC_digest_freectx_fn *freectx;
291 OSSL_FUNC_digest_copyctx_fn *copyctx;
292 OSSL_FUNC_digest_dupctx_fn *dupctx;
293 OSSL_FUNC_digest_get_params_fn *get_params;
294 OSSL_FUNC_digest_set_ctx_params_fn *set_ctx_params;
295 OSSL_FUNC_digest_get_ctx_params_fn *get_ctx_params;
296 OSSL_FUNC_digest_gettable_params_fn *gettable_params;
297 OSSL_FUNC_digest_settable_ctx_params_fn *settable_ctx_params;
298 OSSL_FUNC_digest_gettable_ctx_params_fn *gettable_ctx_params;
299
300} /* EVP_MD */ ;
301
302struct evp_cipher_st {
303 int nid;
304
305 int block_size;
306 /* Default value for variable length ciphers */
307 int key_len;
308 int iv_len;
309
310 /* Legacy structure members */
311 /* Various flags */
312 unsigned long flags;
313 /* How the EVP_CIPHER was created. */
314 int origin;
315 /* init key */
316 int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
317 const unsigned char *iv, int enc);
318 /* encrypt/decrypt data */
319 int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out,
320 const unsigned char *in, size_t inl);
321 /* cleanup ctx */
322 int (*cleanup) (EVP_CIPHER_CTX *);
323 /* how big ctx->cipher_data needs to be */
324 int ctx_size;
325 /* Populate a ASN1_TYPE with parameters */
326 int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
327 /* Get parameters from a ASN1_TYPE */
328 int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
329 /* Miscellaneous operations */
330 int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr);
331 /* Application data */
332 void *app_data;
333
334 /* New structure members */
335 /* Above comment to be removed when legacy has gone */
336 int name_id;
337 char *type_name;
338 const char *description;
339 OSSL_PROVIDER *prov;
340 CRYPTO_REF_COUNT refcnt;
341 OSSL_FUNC_cipher_newctx_fn *newctx;
342 OSSL_FUNC_cipher_encrypt_init_fn *einit;
343 OSSL_FUNC_cipher_decrypt_init_fn *dinit;
344 OSSL_FUNC_cipher_update_fn *cupdate;
345 OSSL_FUNC_cipher_final_fn *cfinal;
346 OSSL_FUNC_cipher_cipher_fn *ccipher;
347 OSSL_FUNC_cipher_pipeline_encrypt_init_fn *p_einit;
348 OSSL_FUNC_cipher_pipeline_decrypt_init_fn *p_dinit;
349 OSSL_FUNC_cipher_pipeline_update_fn *p_cupdate;
350 OSSL_FUNC_cipher_pipeline_final_fn *p_cfinal;
351 OSSL_FUNC_cipher_freectx_fn *freectx;
352 OSSL_FUNC_cipher_dupctx_fn *dupctx;
353 OSSL_FUNC_cipher_get_params_fn *get_params;
354 OSSL_FUNC_cipher_get_ctx_params_fn *get_ctx_params;
355 OSSL_FUNC_cipher_set_ctx_params_fn *set_ctx_params;
356 OSSL_FUNC_cipher_gettable_params_fn *gettable_params;
357 OSSL_FUNC_cipher_gettable_ctx_params_fn *gettable_ctx_params;
358 OSSL_FUNC_cipher_settable_ctx_params_fn *settable_ctx_params;
359 OSSL_FUNC_cipher_encrypt_skey_init_fn *einit_skey;
360 OSSL_FUNC_cipher_decrypt_skey_init_fn *dinit_skey;
361} /* EVP_CIPHER */;
362
363/* Macros to code block cipher wrappers */
364
365/* Wrapper functions for each cipher mode */
366
367#define EVP_C_DATA(kstruct, ctx) \
368 ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx))
369
370#define BLOCK_CIPHER_ecb_loop() \
371 size_t i, bl; \
372 bl = EVP_CIPHER_CTX_get0_cipher(ctx)->block_size; \
373 if (inl < bl) return 1;\
374 inl -= bl; \
375 for (i=0; i <= inl; i+=bl)
376
377#define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
378static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
379{\
380 BLOCK_CIPHER_ecb_loop() \
381 cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_is_encrypting(ctx)); \
382 return 1;\
383}
384
385#define EVP_MAXCHUNK ((size_t)1 << 30)
386
387#define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
388 static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
389{\
390 while(inl>=EVP_MAXCHUNK) {\
391 int num = EVP_CIPHER_CTX_get_num(ctx);\
392 cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, &num); \
393 EVP_CIPHER_CTX_set_num(ctx, num);\
394 inl-=EVP_MAXCHUNK;\
395 in +=EVP_MAXCHUNK;\
396 out+=EVP_MAXCHUNK;\
397 }\
398 if (inl) {\
399 int num = EVP_CIPHER_CTX_get_num(ctx);\
400 cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, &num); \
401 EVP_CIPHER_CTX_set_num(ctx, num);\
402 }\
403 return 1;\
404}
405
406#define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
407static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
408{\
409 while(inl>=EVP_MAXCHUNK) {\
410 cprefix##_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, EVP_CIPHER_CTX_is_encrypting(ctx));\
411 inl-=EVP_MAXCHUNK;\
412 in +=EVP_MAXCHUNK;\
413 out+=EVP_MAXCHUNK;\
414 }\
415 if (inl)\
416 cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, EVP_CIPHER_CTX_is_encrypting(ctx));\
417 return 1;\
418}
419
420#define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
421static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
422{\
423 size_t chunk = EVP_MAXCHUNK;\
424 if (cbits == 1) chunk >>= 3;\
425 if (inl < chunk) chunk = inl;\
426 while (inl && inl >= chunk) {\
427 int num = EVP_CIPHER_CTX_get_num(ctx);\
428 cprefix##_cfb##cbits##_encrypt(in, out, (long) \
429 ((cbits == 1) \
430 && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \
431 ? chunk*8 : chunk), \
432 &EVP_C_DATA(kstruct, ctx)->ksched, ctx->iv,\
433 &num, EVP_CIPHER_CTX_is_encrypting(ctx));\
434 EVP_CIPHER_CTX_set_num(ctx, num);\
435 inl -= chunk;\
436 in += chunk;\
437 out += chunk;\
438 if (inl < chunk) chunk = inl;\
439 }\
440 return 1;\
441}
442
443#define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
444 BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
445 BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
446 BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
447 BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
448
449#define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
450 key_len, iv_len, flags, init_key, cleanup, \
451 set_asn1, get_asn1, ctrl) \
452static const EVP_CIPHER cname##_##mode = { \
453 nid##_##nmode, block_size, key_len, iv_len, \
454 flags | EVP_CIPH_##MODE##_MODE, \
455 EVP_ORIG_GLOBAL, \
456 init_key, \
457 cname##_##mode##_cipher, \
458 cleanup, \
459 sizeof(kstruct), \
460 set_asn1, get_asn1,\
461 ctrl, \
462 NULL \
463}; \
464const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
465
466#define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
467 iv_len, flags, init_key, cleanup, set_asn1, \
468 get_asn1, ctrl) \
469BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
470 iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
471
472#define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
473 iv_len, cbits, flags, init_key, cleanup, \
474 set_asn1, get_asn1, ctrl) \
475BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
476 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
477 get_asn1, ctrl)
478
479#define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
480 iv_len, cbits, flags, init_key, cleanup, \
481 set_asn1, get_asn1, ctrl) \
482BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
483 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
484 get_asn1, ctrl)
485
486#define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
487 flags, init_key, cleanup, set_asn1, \
488 get_asn1, ctrl) \
489BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
490 0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
491
492#define BLOCK_CIPHER_defs(cname, kstruct, \
493 nid, block_size, key_len, iv_len, cbits, flags, \
494 init_key, cleanup, set_asn1, get_asn1, ctrl) \
495BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
496 init_key, cleanup, set_asn1, get_asn1, ctrl) \
497BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
498 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
499BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
500 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
501BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
502 init_key, cleanup, set_asn1, get_asn1, ctrl)
503
504/*-
505#define BLOCK_CIPHER_defs(cname, kstruct, \
506 nid, block_size, key_len, iv_len, flags,\
507 init_key, cleanup, set_asn1, get_asn1, ctrl)\
508static const EVP_CIPHER cname##_cbc = {\
509 nid##_cbc, block_size, key_len, iv_len, \
510 flags | EVP_CIPH_CBC_MODE,\
511 EVP_ORIG_GLOBAL,\
512 init_key,\
513 cname##_cbc_cipher,\
514 cleanup,\
515 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
516 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
517 set_asn1, get_asn1,\
518 ctrl, \
519 NULL \
520};\
521const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
522static const EVP_CIPHER cname##_cfb = {\
523 nid##_cfb64, 1, key_len, iv_len, \
524 flags | EVP_CIPH_CFB_MODE,\
525 EVP_ORIG_GLOBAL,\
526 init_key,\
527 cname##_cfb_cipher,\
528 cleanup,\
529 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
530 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
531 set_asn1, get_asn1,\
532 ctrl,\
533 NULL \
534};\
535const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
536static const EVP_CIPHER cname##_ofb = {\
537 nid##_ofb64, 1, key_len, iv_len, \
538 flags | EVP_CIPH_OFB_MODE,\
539 EVP_ORIG_GLOBAL,\
540 init_key,\
541 cname##_ofb_cipher,\
542 cleanup,\
543 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
544 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
545 set_asn1, get_asn1,\
546 ctrl,\
547 NULL \
548};\
549const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
550static const EVP_CIPHER cname##_ecb = {\
551 nid##_ecb, block_size, key_len, iv_len, \
552 flags | EVP_CIPH_ECB_MODE,\
553 EVP_ORIG_GLOBAL,\
554 init_key,\
555 cname##_ecb_cipher,\
556 cleanup,\
557 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
558 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
559 set_asn1, get_asn1,\
560 ctrl,\
561 NULL \
562};\
563const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
564*/
565
566#define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
567 block_size, key_len, iv_len, cbits, \
568 flags, init_key, \
569 cleanup, set_asn1, get_asn1, ctrl) \
570 BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
571 BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
572 cbits, flags, init_key, cleanup, set_asn1, \
573 get_asn1, ctrl)
574
575#define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
576 BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
577 BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
578 NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
579 (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
580 cipher##_init_key, NULL, NULL, NULL, NULL)
581
582typedef struct {
583 unsigned char iv[EVP_MAX_IV_LENGTH];
584 unsigned int iv_len;
585 unsigned int tag_len;
586} evp_cipher_aead_asn1_params;
587
588int evp_cipher_param_to_asn1_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
589 evp_cipher_aead_asn1_params *params);
590
591int evp_cipher_asn1_to_param_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
592 evp_cipher_aead_asn1_params *params);
593
594/*
595 * To support transparent execution of operation in backends other
596 * than the "origin" key, we support transparent export/import to
597 * those providers, and maintain a cache of the imported keydata,
598 * so we don't need to redo the export/import every time we perform
599 * the same operation in that same provider.
600 * This requires that the "origin" backend (whether it's a legacy or a
601 * provider "origin") implements exports, and that the target provider
602 * has an EVP_KEYMGMT that implements import.
603 */
604typedef struct {
605 EVP_KEYMGMT *keymgmt;
606 void *keydata;
607 int selection;
608} OP_CACHE_ELEM;
609
610DEFINE_STACK_OF(OP_CACHE_ELEM)
611
612/*
613 * An EVP_PKEY can have the following states:
614 *
615 * untyped & empty:
616 *
617 * type == EVP_PKEY_NONE && keymgmt == NULL
618 *
619 * typed & empty:
620 *
621 * (type != EVP_PKEY_NONE && pkey.ptr == NULL) ## legacy (libcrypto only)
622 * || (keymgmt != NULL && keydata == NULL) ## provider side
623 *
624 * fully assigned:
625 *
626 * (type != EVP_PKEY_NONE && pkey.ptr != NULL) ## legacy (libcrypto only)
627 * || (keymgmt != NULL && keydata != NULL) ## provider side
628 *
629 * The easiest way to detect a legacy key is:
630 *
631 * keymgmt == NULL && type != EVP_PKEY_NONE
632 *
633 * The easiest way to detect a provider side key is:
634 *
635 * keymgmt != NULL
636 */
637#define evp_pkey_is_blank(pk) \
638 ((pk)->type == EVP_PKEY_NONE && (pk)->keymgmt == NULL)
639#define evp_pkey_is_typed(pk) \
640 ((pk)->type != EVP_PKEY_NONE || (pk)->keymgmt != NULL)
641#ifndef FIPS_MODULE
642# define evp_pkey_is_assigned(pk) \
643 ((pk)->pkey.ptr != NULL || (pk)->keydata != NULL)
644#else
645# define evp_pkey_is_assigned(pk) \
646 ((pk)->keydata != NULL)
647#endif
648#define evp_pkey_is_legacy(pk) \
649 ((pk)->type != EVP_PKEY_NONE && (pk)->keymgmt == NULL)
650#define evp_pkey_is_provided(pk) \
651 ((pk)->keymgmt != NULL)
652
653union legacy_pkey_st {
654 void *ptr;
655 struct rsa_st *rsa; /* RSA */
656# ifndef OPENSSL_NO_DSA
657 struct dsa_st *dsa; /* DSA */
658# endif
659# ifndef OPENSSL_NO_DH
660 struct dh_st *dh; /* DH */
661# endif
662# ifndef OPENSSL_NO_EC
663 struct ec_key_st *ec; /* ECC */
664# ifndef OPENSSL_NO_ECX
665 ECX_KEY *ecx; /* X25519, X448, Ed25519, Ed448 */
666# endif
667# endif
668};
669
670struct evp_pkey_st {
671 /* == Legacy attributes == */
672 int type;
673 int save_type;
674
675# ifndef FIPS_MODULE
676 /*
677 * Legacy key "origin" is composed of a pointer to an EVP_PKEY_ASN1_METHOD,
678 * a pointer to a low level key and possibly a pointer to an engine.
679 */
680 const EVP_PKEY_ASN1_METHOD *ameth;
681 ENGINE *engine;
682 ENGINE *pmeth_engine; /* If not NULL public key ENGINE to use */
683
684 /* Union to store the reference to an origin legacy key */
685 union legacy_pkey_st pkey;
686
687 /* Union to store the reference to a non-origin legacy key */
688 union legacy_pkey_st legacy_cache_pkey;
689# endif
690
691 /* == Common attributes == */
692 CRYPTO_REF_COUNT references;
693 CRYPTO_RWLOCK *lock;
694#ifndef FIPS_MODULE
695 STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
696 int save_parameters;
697 unsigned int foreign:1; /* the low-level key is using an engine or an app-method */
698 CRYPTO_EX_DATA ex_data;
699#endif
700
701 /* == Provider attributes == */
702
703 /*
704 * Provider keydata "origin" is composed of a pointer to an EVP_KEYMGMT
705 * and a pointer to the provider side key data. This is never used at
706 * the same time as the legacy key data above.
707 */
708 EVP_KEYMGMT *keymgmt;
709 void *keydata;
710 /*
711 * If any libcrypto code does anything that may modify the keydata
712 * contents, this dirty counter must be incremented.
713 */
714 size_t dirty_cnt;
715
716 /*
717 * To support transparent execution of operation in backends other
718 * than the "origin" key, we support transparent export/import to
719 * those providers, and maintain a cache of the imported keydata,
720 * so we don't need to redo the export/import every time we perform
721 * the same operation in that same provider.
722 */
723 STACK_OF(OP_CACHE_ELEM) *operation_cache;
724
725 /*
726 * We keep a copy of that "origin"'s dirty count, so we know if the
727 * operation cache needs flushing.
728 */
729 size_t dirty_cnt_copy;
730
731 /* Cache of key object information */
732 struct {
733 int bits;
734 int security_bits;
735 int security_category;
736 int size;
737 } cache;
738}; /* EVP_PKEY */
739
740/* The EVP_PKEY_OP_TYPE_ macros are found in include/openssl/evp.h */
741
742# define EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) \
743 (((ctx)->operation & EVP_PKEY_OP_TYPE_SIG) != 0)
744
745# define EVP_PKEY_CTX_IS_DERIVE_OP(ctx) \
746 (((ctx)->operation & EVP_PKEY_OP_TYPE_DERIVE) != 0)
747
748# define EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) \
749 (((ctx)->operation & EVP_PKEY_OP_TYPE_CRYPT) != 0)
750
751# define EVP_PKEY_CTX_IS_GEN_OP(ctx) \
752 (((ctx)->operation & EVP_PKEY_OP_TYPE_GEN) != 0)
753
754# define EVP_PKEY_CTX_IS_FROMDATA_OP(ctx) \
755 (((ctx)->operation & EVP_PKEY_OP_TYPE_DATA) != 0)
756
757# define EVP_PKEY_CTX_IS_KEM_OP(ctx) \
758 (((ctx)->operation & EVP_PKEY_OP_TYPE_KEM) != 0)
759
760struct evp_skey_st {
761 /* == Common attributes == */
762 CRYPTO_REF_COUNT references;
763 CRYPTO_RWLOCK *lock;
764
765 void *keydata; /* Alg-specific key data */
766 EVP_SKEYMGMT *skeymgmt; /* Import, export, manage */
767}; /* EVP_SKEY */
768
769void openssl_add_all_ciphers_int(void);
770void openssl_add_all_digests_int(void);
771void evp_cleanup_int(void);
772void evp_app_cleanup_int(void);
773void *evp_pkey_export_to_provider(EVP_PKEY *pk, OSSL_LIB_CTX *libctx,
774 EVP_KEYMGMT **keymgmt,
775 const char *propquery);
776#ifndef FIPS_MODULE
777int evp_pkey_copy_downgraded(EVP_PKEY **dest, const EVP_PKEY *src);
778void *evp_pkey_get_legacy(EVP_PKEY *pk);
779void evp_pkey_free_legacy(EVP_PKEY *x);
780EVP_PKEY *evp_pkcs82pkey_legacy(const PKCS8_PRIV_KEY_INFO *p8inf,
781 OSSL_LIB_CTX *libctx, const char *propq);
782#endif
783
784/*
785 * KEYMGMT utility functions
786 */
787
788/*
789 * Key import structure and helper function, to be used as an export callback
790 */
791struct evp_keymgmt_util_try_import_data_st {
792 EVP_KEYMGMT *keymgmt;
793 void *keydata;
794
795 int selection;
796};
797int evp_keymgmt_util_try_import(const OSSL_PARAM params[], void *arg);
798int evp_keymgmt_util_assign_pkey(EVP_PKEY *pkey, EVP_KEYMGMT *keymgmt,
799 void *keydata);
800EVP_PKEY *evp_keymgmt_util_make_pkey(EVP_KEYMGMT *keymgmt, void *keydata);
801
802int evp_keymgmt_util_export(const EVP_PKEY *pk, int selection,
803 OSSL_CALLBACK *export_cb, void *export_cbarg);
804void *evp_keymgmt_util_export_to_provider(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt,
805 int selection);
806OP_CACHE_ELEM *evp_keymgmt_util_find_operation_cache(EVP_PKEY *pk,
807 EVP_KEYMGMT *keymgmt,
808 int selection);
809int evp_keymgmt_util_clear_operation_cache(EVP_PKEY *pk);
810int evp_keymgmt_util_cache_keydata(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt,
811 void *keydata, int selection);
812void evp_keymgmt_util_cache_keyinfo(EVP_PKEY *pk);
813void *evp_keymgmt_util_fromdata(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
814 int selection, const OSSL_PARAM params[]);
815int evp_keymgmt_util_has(EVP_PKEY *pk, int selection);
816int evp_keymgmt_util_match(EVP_PKEY *pk1, EVP_PKEY *pk2, int selection);
817int evp_keymgmt_util_copy(EVP_PKEY *to, EVP_PKEY *from, int selection);
818void *evp_keymgmt_util_gen(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
819 void *genctx, OSSL_CALLBACK *cb, void *cbarg);
820int evp_keymgmt_util_get_deflt_digest_name(EVP_KEYMGMT *keymgmt,
821 void *keydata,
822 char *mdname, size_t mdname_sz);
823const char *evp_keymgmt_util_query_operation_name(EVP_KEYMGMT *keymgmt,
824 int op_id);
825
826/*
827 * KEYMGMT provider interface functions
828 */
829void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt);
830void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keyddata);
831int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt,
832 void *keydata, OSSL_PARAM params[]);
833int evp_keymgmt_set_params(const EVP_KEYMGMT *keymgmt,
834 void *keydata, const OSSL_PARAM params[]);
835void *evp_keymgmt_gen_init(const EVP_KEYMGMT *keymgmt, int selection,
836 const OSSL_PARAM params[]);
837int evp_keymgmt_gen_set_template(const EVP_KEYMGMT *keymgmt, void *genctx,
838 void *templ);
839int evp_keymgmt_gen_set_params(const EVP_KEYMGMT *keymgmt, void *genctx,
840 const OSSL_PARAM params[]);
841int evp_keymgmt_gen_get_params(const EVP_KEYMGMT *keymgmt,
842 void *genctx, OSSL_PARAM params[]);
843void *evp_keymgmt_gen(const EVP_KEYMGMT *keymgmt, void *genctx,
844 OSSL_CALLBACK *cb, void *cbarg);
845void evp_keymgmt_gen_cleanup(const EVP_KEYMGMT *keymgmt, void *genctx);
846
847int evp_keymgmt_has_load(const EVP_KEYMGMT *keymgmt);
848void *evp_keymgmt_load(const EVP_KEYMGMT *keymgmt,
849 const void *objref, size_t objref_sz);
850
851int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keyddata, int selection);
852int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
853 int selection, int checktype);
854int evp_keymgmt_match(const EVP_KEYMGMT *keymgmt,
855 const void *keydata1, const void *keydata2,
856 int selection);
857
858int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
859 int selection, const OSSL_PARAM params[]);
860const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
861 int selection);
862int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
863 int selection, OSSL_CALLBACK *param_cb, void *cbarg);
864const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
865 int selection);
866void *evp_keymgmt_dup(const EVP_KEYMGMT *keymgmt,
867 const void *keydata_from, int selection);
868EVP_KEYMGMT *evp_keymgmt_fetch_from_prov(OSSL_PROVIDER *prov,
869 const char *name,
870 const char *properties);
871
872/*
873 * SKEYMGMT provider interface functions
874 */
875EVP_SKEY *evp_skey_alloc(EVP_SKEYMGMT *skeymgmt);
876void evp_skeymgmt_freedata(const EVP_SKEYMGMT *keymgmt, void *keyddata);
877void *evp_skeymgmt_import(const EVP_SKEYMGMT *skeymgmt, int selection, const OSSL_PARAM params[]);
878int evp_skeymgmt_export(const EVP_SKEYMGMT *skeymgmt, void *keydata,
879 int selection, OSSL_CALLBACK *param_cb, void *cbarg);
880void *evp_skeymgmt_generate(const EVP_SKEYMGMT *skeymgmt, const OSSL_PARAM params[]);
881EVP_SKEYMGMT *evp_skeymgmt_fetch_from_prov(OSSL_PROVIDER *prov,
882 const char *name,
883 const char *properties);
884
885/* Pulling defines out of C source files */
886
887# define EVP_RC4_KEY_SIZE 16
888# ifndef TLS1_1_VERSION
889# define TLS1_1_VERSION 0x0302
890# endif
891
892void evp_encode_ctx_set_flags(EVP_ENCODE_CTX *ctx, unsigned int flags);
893
894/* EVP_ENCODE_CTX flags */
895/* Don't generate new lines when encoding */
896#define EVP_ENCODE_CTX_NO_NEWLINES 1
897/* Use the SRP base64 alphabet instead of the standard one */
898#define EVP_ENCODE_CTX_USE_SRP_ALPHABET 2
899
900const EVP_CIPHER *evp_get_cipherbyname_ex(OSSL_LIB_CTX *libctx,
901 const char *name);
902const EVP_MD *evp_get_digestbyname_ex(OSSL_LIB_CTX *libctx,
903 const char *name);
904
905int ossl_pkcs5_pbkdf2_hmac_ex(const char *pass, int passlen,
906 const unsigned char *salt, int saltlen, int iter,
907 const EVP_MD *digest, int keylen,
908 unsigned char *out,
909 OSSL_LIB_CTX *libctx, const char *propq);
910
911# ifndef FIPS_MODULE
912/*
913 * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
914 *
915 * Return 1 on success, 0 or negative for errors.
916 *
917 * In particular they return -2 if any of the params is not supported.
918 *
919 * They are not available in FIPS_MODULE as they depend on
920 * - EVP_PKEY_CTX_{get,set}_params()
921 * - EVP_PKEY_CTX_{gettable,settable}_params()
922 *
923 */
924int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
925int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
926
927EVP_MD_CTX *evp_md_ctx_new_ex(EVP_PKEY *pkey, const ASN1_OCTET_STRING *id,
928 OSSL_LIB_CTX *libctx, const char *propq);
929int evp_pkey_name2type(const char *name);
930const char *evp_pkey_type2name(int type);
931
932int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx);
933# endif /* !defined(FIPS_MODULE) */
934
935int evp_method_store_cache_flush(OSSL_LIB_CTX *libctx);
936int evp_method_store_remove_all_provided(const OSSL_PROVIDER *prov);
937
938int evp_default_properties_enable_fips_int(OSSL_LIB_CTX *libctx, int enable,
939 int loadconfig);
940int evp_set_default_properties_int(OSSL_LIB_CTX *libctx, const char *propq,
941 int loadconfig, int mirrored);
942char *evp_get_global_properties_str(OSSL_LIB_CTX *libctx, int loadconfig);
943
944void evp_md_ctx_clear_digest(EVP_MD_CTX *ctx, int force, int keep_digest);
945/* just free the algctx if set, returns 0 on inconsistent state of ctx */
946int evp_md_ctx_free_algctx(EVP_MD_CTX *ctx);
947
948/* Three possible states: */
949# define EVP_PKEY_STATE_UNKNOWN 0
950# define EVP_PKEY_STATE_LEGACY 1
951# define EVP_PKEY_STATE_PROVIDER 2
952int evp_pkey_ctx_state(const EVP_PKEY_CTX *ctx);
953
954/* These two must ONLY be called for provider side operations */
955int evp_pkey_ctx_ctrl_to_param(EVP_PKEY_CTX *ctx,
956 int keytype, int optype,
957 int cmd, int p1, void *p2);
958int evp_pkey_ctx_ctrl_str_to_param(EVP_PKEY_CTX *ctx,
959 const char *name, const char *value);
960
961/* These two must ONLY be called for legacy operations */
962int evp_pkey_ctx_set_params_to_ctrl(EVP_PKEY_CTX *ctx, const OSSL_PARAM *params);
963int evp_pkey_ctx_get_params_to_ctrl(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
964
965/* This must ONLY be called for legacy EVP_PKEYs */
966int evp_pkey_get_params_to_ctrl(const EVP_PKEY *pkey, OSSL_PARAM *params);
967
968/* Same as the public get0 functions but are not const */
969# ifndef OPENSSL_NO_DEPRECATED_3_0
970DH *evp_pkey_get0_DH_int(const EVP_PKEY *pkey);
971EC_KEY *evp_pkey_get0_EC_KEY_int(const EVP_PKEY *pkey);
972RSA *evp_pkey_get0_RSA_int(const EVP_PKEY *pkey);
973# endif
974
975/* Get internal identification number routines */
976int evp_asym_cipher_get_number(const EVP_ASYM_CIPHER *cipher);
977int evp_cipher_get_number(const EVP_CIPHER *cipher);
978int evp_kdf_get_number(const EVP_KDF *kdf);
979int evp_kem_get_number(const EVP_KEM *wrap);
980int evp_keyexch_get_number(const EVP_KEYEXCH *keyexch);
981int evp_keymgmt_get_number(const EVP_KEYMGMT *keymgmt);
982int evp_keymgmt_get_legacy_alg(const EVP_KEYMGMT *keymgmt);
983int evp_mac_get_number(const EVP_MAC *mac);
984int evp_md_get_number(const EVP_MD *md);
985int evp_rand_get_number(const EVP_RAND *rand);
986int evp_rand_can_seed(EVP_RAND_CTX *ctx);
987size_t evp_rand_get_seed(EVP_RAND_CTX *ctx,
988 unsigned char **buffer,
989 int entropy, size_t min_len, size_t max_len,
990 int prediction_resistance,
991 const unsigned char *adin, size_t adin_len);
992void evp_rand_clear_seed(EVP_RAND_CTX *ctx,
993 unsigned char *buffer, size_t b_len);
994int evp_signature_get_number(const EVP_SIGNATURE *signature);
995
996int evp_pkey_decrypt_alloc(EVP_PKEY_CTX *ctx, unsigned char **outp,
997 size_t *outlenp, size_t expected_outlen,
998 const unsigned char *in, size_t inlen);
999
1000int ossl_md2hmacnid(int mdnid);
1001int ossl_hmac2mdnid(int hmac_nid);
1002
1003#endif /* OSSL_CRYPTO_EVP_H */
Mirror of https://github.com/openssl/openssl.git