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openssl rand command should use the loaded library context
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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};
251
252#define EVP_ORIG_DYNAMIC 0
253#define EVP_ORIG_GLOBAL 1
254#define EVP_ORIG_METH 2
255
256struct 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
300struct 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) \
376static 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) \
405static 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) \
419static 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) \
450static 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}; \
462const 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) \
467BLOCK_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) \
473BLOCK_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) \
480BLOCK_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) \
487BLOCK_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) \
493BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
494 init_key, cleanup, set_asn1, get_asn1, ctrl) \
495BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
496 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
497BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
498 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
499BLOCK_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)\
506static 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};\
519const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
520static 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};\
533const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
534static 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};\
547const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
548static 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};\
561const 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
580typedef 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
586int evp_cipher_param_to_asn1_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
587 evp_cipher_aead_asn1_params *params);
588
589int 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 */
602typedef struct {
603 EVP_KEYMGMT *keymgmt;
604 void *keydata;
605 int selection;
606} OP_CACHE_ELEM;
607
608DEFINE_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
651union 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
668struct 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 security_category;
734 int size;
735 } cache;
736}; /* EVP_PKEY */
737
738/* The EVP_PKEY_OP_TYPE_ macros are found in include/openssl/evp.h */
739
740# define EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) \
741 (((ctx)->operation & EVP_PKEY_OP_TYPE_SIG) != 0)
742
743# define EVP_PKEY_CTX_IS_DERIVE_OP(ctx) \
744 (((ctx)->operation & EVP_PKEY_OP_TYPE_DERIVE) != 0)
745
746# define EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) \
747 (((ctx)->operation & EVP_PKEY_OP_TYPE_CRYPT) != 0)
748
749# define EVP_PKEY_CTX_IS_GEN_OP(ctx) \
750 (((ctx)->operation & EVP_PKEY_OP_TYPE_GEN) != 0)
751
752# define EVP_PKEY_CTX_IS_FROMDATA_OP(ctx) \
753 (((ctx)->operation & EVP_PKEY_OP_TYPE_DATA) != 0)
754
755# define EVP_PKEY_CTX_IS_KEM_OP(ctx) \
756 (((ctx)->operation & EVP_PKEY_OP_TYPE_KEM) != 0)
757
758struct evp_skey_st {
759 /* == Common attributes == */
760 CRYPTO_REF_COUNT references;
761 CRYPTO_RWLOCK *lock;
762
763 void *keydata; /* Alg-specific key data */
764 EVP_SKEYMGMT *skeymgmt; /* Import, export, manage */
765}; /* EVP_SKEY */
766
767void openssl_add_all_ciphers_int(void);
768void openssl_add_all_digests_int(void);
769void evp_cleanup_int(void);
770void evp_app_cleanup_int(void);
771void *evp_pkey_export_to_provider(EVP_PKEY *pk, OSSL_LIB_CTX *libctx,
772 EVP_KEYMGMT **keymgmt,
773 const char *propquery);
774#ifndef FIPS_MODULE
775int evp_pkey_copy_downgraded(EVP_PKEY **dest, const EVP_PKEY *src);
776void *evp_pkey_get_legacy(EVP_PKEY *pk);
777void evp_pkey_free_legacy(EVP_PKEY *x);
778EVP_PKEY *evp_pkcs82pkey_legacy(const PKCS8_PRIV_KEY_INFO *p8inf,
779 OSSL_LIB_CTX *libctx, const char *propq);
780#endif
781
782/*
783 * KEYMGMT utility functions
784 */
785
786/*
787 * Key import structure and helper function, to be used as an export callback
788 */
789struct evp_keymgmt_util_try_import_data_st {
790 EVP_KEYMGMT *keymgmt;
791 void *keydata;
792
793 int selection;
794};
795int evp_keymgmt_util_try_import(const OSSL_PARAM params[], void *arg);
796int evp_keymgmt_util_assign_pkey(EVP_PKEY *pkey, EVP_KEYMGMT *keymgmt,
797 void *keydata);
798EVP_PKEY *evp_keymgmt_util_make_pkey(EVP_KEYMGMT *keymgmt, void *keydata);
799
800int evp_keymgmt_util_export(const EVP_PKEY *pk, int selection,
801 OSSL_CALLBACK *export_cb, void *export_cbarg);
802void *evp_keymgmt_util_export_to_provider(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt,
803 int selection);
804OP_CACHE_ELEM *evp_keymgmt_util_find_operation_cache(EVP_PKEY *pk,
805 EVP_KEYMGMT *keymgmt,
806 int selection);
807int evp_keymgmt_util_clear_operation_cache(EVP_PKEY *pk);
808int evp_keymgmt_util_cache_keydata(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt,
809 void *keydata, int selection);
810void evp_keymgmt_util_cache_keyinfo(EVP_PKEY *pk);
811void *evp_keymgmt_util_fromdata(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
812 int selection, const OSSL_PARAM params[]);
813int evp_keymgmt_util_has(EVP_PKEY *pk, int selection);
814int evp_keymgmt_util_match(EVP_PKEY *pk1, EVP_PKEY *pk2, int selection);
815int evp_keymgmt_util_copy(EVP_PKEY *to, EVP_PKEY *from, int selection);
816void *evp_keymgmt_util_gen(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
817 void *genctx, OSSL_CALLBACK *cb, void *cbarg);
818int evp_keymgmt_util_get_deflt_digest_name(EVP_KEYMGMT *keymgmt,
819 void *keydata,
820 char *mdname, size_t mdname_sz);
821const char *evp_keymgmt_util_query_operation_name(EVP_KEYMGMT *keymgmt,
822 int op_id);
823
824/*
825 * KEYMGMT provider interface functions
826 */
827void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt);
828void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keyddata);
829int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt,
830 void *keydata, OSSL_PARAM params[]);
831int evp_keymgmt_set_params(const EVP_KEYMGMT *keymgmt,
832 void *keydata, const OSSL_PARAM params[]);
833void *evp_keymgmt_gen_init(const EVP_KEYMGMT *keymgmt, int selection,
834 const OSSL_PARAM params[]);
835int evp_keymgmt_gen_set_template(const EVP_KEYMGMT *keymgmt, void *genctx,
836 void *templ);
837int evp_keymgmt_gen_set_params(const EVP_KEYMGMT *keymgmt, void *genctx,
838 const OSSL_PARAM params[]);
839int evp_keymgmt_gen_get_params(const EVP_KEYMGMT *keymgmt,
840 void *genctx, OSSL_PARAM params[]);
841void *evp_keymgmt_gen(const EVP_KEYMGMT *keymgmt, void *genctx,
842 OSSL_CALLBACK *cb, void *cbarg);
843void evp_keymgmt_gen_cleanup(const EVP_KEYMGMT *keymgmt, void *genctx);
844
845int evp_keymgmt_has_load(const EVP_KEYMGMT *keymgmt);
846void *evp_keymgmt_load(const EVP_KEYMGMT *keymgmt,
847 const void *objref, size_t objref_sz);
848
849int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keyddata, int selection);
850int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
851 int selection, int checktype);
852int evp_keymgmt_match(const EVP_KEYMGMT *keymgmt,
853 const void *keydata1, const void *keydata2,
854 int selection);
855
856int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
857 int selection, const OSSL_PARAM params[]);
858const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
859 int selection);
860int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
861 int selection, OSSL_CALLBACK *param_cb, void *cbarg);
862const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
863 int selection);
864void *evp_keymgmt_dup(const EVP_KEYMGMT *keymgmt,
865 const void *keydata_from, int selection);
866EVP_KEYMGMT *evp_keymgmt_fetch_from_prov(OSSL_PROVIDER *prov,
867 const char *name,
868 const char *properties);
869
870/*
871 * SKEYMGMT provider interface functions
872 */
873void evp_skeymgmt_freedata(const EVP_SKEYMGMT *keymgmt, void *keyddata);
874void *evp_skeymgmt_import(const EVP_SKEYMGMT *skeymgmt, int selection, const OSSL_PARAM params[]);
875int evp_skeymgmt_export(const EVP_SKEYMGMT *skeymgmt, void *keydata,
876 int selection, OSSL_CALLBACK *param_cb, void *cbarg);
877void *evp_skeymgmt_generate(const EVP_SKEYMGMT *skeymgmt, const OSSL_PARAM params[]);
878EVP_SKEYMGMT *evp_skeymgmt_fetch_from_prov(OSSL_PROVIDER *prov,
879 const char *name,
880 const char *properties);
881
882/* Pulling defines out of C source files */
883
884# define EVP_RC4_KEY_SIZE 16
885# ifndef TLS1_1_VERSION
886# define TLS1_1_VERSION 0x0302
887# endif
888
889void evp_encode_ctx_set_flags(EVP_ENCODE_CTX *ctx, unsigned int flags);
890
891/* EVP_ENCODE_CTX flags */
892/* Don't generate new lines when encoding */
893#define EVP_ENCODE_CTX_NO_NEWLINES 1
894/* Use the SRP base64 alphabet instead of the standard one */
895#define EVP_ENCODE_CTX_USE_SRP_ALPHABET 2
896
897const EVP_CIPHER *evp_get_cipherbyname_ex(OSSL_LIB_CTX *libctx,
898 const char *name);
899const EVP_MD *evp_get_digestbyname_ex(OSSL_LIB_CTX *libctx,
900 const char *name);
901
902int ossl_pkcs5_pbkdf2_hmac_ex(const char *pass, int passlen,
903 const unsigned char *salt, int saltlen, int iter,
904 const EVP_MD *digest, int keylen,
905 unsigned char *out,
906 OSSL_LIB_CTX *libctx, const char *propq);
907
908# ifndef FIPS_MODULE
909/*
910 * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
911 *
912 * Return 1 on success, 0 or negative for errors.
913 *
914 * In particular they return -2 if any of the params is not supported.
915 *
916 * They are not available in FIPS_MODULE as they depend on
917 * - EVP_PKEY_CTX_{get,set}_params()
918 * - EVP_PKEY_CTX_{gettable,settable}_params()
919 *
920 */
921int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
922int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
923
924EVP_MD_CTX *evp_md_ctx_new_ex(EVP_PKEY *pkey, const ASN1_OCTET_STRING *id,
925 OSSL_LIB_CTX *libctx, const char *propq);
926int evp_pkey_name2type(const char *name);
927const char *evp_pkey_type2name(int type);
928
929int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx);
930# endif /* !defined(FIPS_MODULE) */
931
932int evp_method_store_cache_flush(OSSL_LIB_CTX *libctx);
933int evp_method_store_remove_all_provided(const OSSL_PROVIDER *prov);
934
935int evp_default_properties_enable_fips_int(OSSL_LIB_CTX *libctx, int enable,
936 int loadconfig);
937int evp_set_default_properties_int(OSSL_LIB_CTX *libctx, const char *propq,
938 int loadconfig, int mirrored);
939char *evp_get_global_properties_str(OSSL_LIB_CTX *libctx, int loadconfig);
940
941void evp_md_ctx_clear_digest(EVP_MD_CTX *ctx, int force, int keep_digest);
942/* just free the algctx if set, returns 0 on inconsistent state of ctx */
943int evp_md_ctx_free_algctx(EVP_MD_CTX *ctx);
944
945/* Three possible states: */
946# define EVP_PKEY_STATE_UNKNOWN 0
947# define EVP_PKEY_STATE_LEGACY 1
948# define EVP_PKEY_STATE_PROVIDER 2
949int evp_pkey_ctx_state(const EVP_PKEY_CTX *ctx);
950
951/* These two must ONLY be called for provider side operations */
952int evp_pkey_ctx_ctrl_to_param(EVP_PKEY_CTX *ctx,
953 int keytype, int optype,
954 int cmd, int p1, void *p2);
955int evp_pkey_ctx_ctrl_str_to_param(EVP_PKEY_CTX *ctx,
956 const char *name, const char *value);
957
958/* These two must ONLY be called for legacy operations */
959int evp_pkey_ctx_set_params_to_ctrl(EVP_PKEY_CTX *ctx, const OSSL_PARAM *params);
960int evp_pkey_ctx_get_params_to_ctrl(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
961
962/* This must ONLY be called for legacy EVP_PKEYs */
963int evp_pkey_get_params_to_ctrl(const EVP_PKEY *pkey, OSSL_PARAM *params);
964
965/* Same as the public get0 functions but are not const */
966# ifndef OPENSSL_NO_DEPRECATED_3_0
967DH *evp_pkey_get0_DH_int(const EVP_PKEY *pkey);
968EC_KEY *evp_pkey_get0_EC_KEY_int(const EVP_PKEY *pkey);
969RSA *evp_pkey_get0_RSA_int(const EVP_PKEY *pkey);
970# endif
971
972/* Get internal identification number routines */
973int evp_asym_cipher_get_number(const EVP_ASYM_CIPHER *cipher);
974int evp_cipher_get_number(const EVP_CIPHER *cipher);
975int evp_kdf_get_number(const EVP_KDF *kdf);
976int evp_kem_get_number(const EVP_KEM *wrap);
977int evp_keyexch_get_number(const EVP_KEYEXCH *keyexch);
978int evp_keymgmt_get_number(const EVP_KEYMGMT *keymgmt);
979int evp_keymgmt_get_legacy_alg(const EVP_KEYMGMT *keymgmt);
980int evp_mac_get_number(const EVP_MAC *mac);
981int evp_md_get_number(const EVP_MD *md);
982int evp_rand_get_number(const EVP_RAND *rand);
983int evp_rand_can_seed(EVP_RAND_CTX *ctx);
984size_t evp_rand_get_seed(EVP_RAND_CTX *ctx,
985 unsigned char **buffer,
986 int entropy, size_t min_len, size_t max_len,
987 int prediction_resistance,
988 const unsigned char *adin, size_t adin_len);
989void evp_rand_clear_seed(EVP_RAND_CTX *ctx,
990 unsigned char *buffer, size_t b_len);
991int evp_signature_get_number(const EVP_SIGNATURE *signature);
992
993int evp_pkey_decrypt_alloc(EVP_PKEY_CTX *ctx, unsigned char **outp,
994 size_t *outlenp, size_t expected_outlen,
995 const unsigned char *in, size_t inlen);
996
997int ossl_md2hmacnid(int mdnid);
998int ossl_hmac2mdnid(int hmac_nid);
999
1000#endif /* OSSL_CRYPTO_EVP_H */
Mirror of https://github.com/openssl/openssl.git