include/crypto/evp.h

   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     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
 258 struct 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
 302 struct 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) \
 378 static 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) \
 407 static 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)  \
 421 static 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) \
 452 static 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 }; \
 464 const 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) \
 469 BLOCK_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) \
 475 BLOCK_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) \
 482 BLOCK_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) \
 489 BLOCK_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) \
 495 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
 496                      init_key, cleanup, set_asn1, get_asn1, ctrl) \
 497 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
 498                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 499 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
 500                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 501 BLOCK_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)\
 508 static 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 };\
 521 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
 522 static 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 };\
 535 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
 536 static 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 };\
 549 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
 550 static 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 };\
 563 const 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
 582 typedef 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
 588 int evp_cipher_param_to_asn1_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
 589                                 evp_cipher_aead_asn1_params *params);
 590
 591 int 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  */
 604 typedef struct {
 605     EVP_KEYMGMT *keymgmt;
 606     void *keydata;
 607     int selection;
 608 } OP_CACHE_ELEM;
 609
 610 DEFINE_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
 653 union 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
 670 struct 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
 760 struct 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
 769 void openssl_add_all_ciphers_int(void);
 770 void openssl_add_all_digests_int(void);
 771 void evp_cleanup_int(void);
 772 void evp_app_cleanup_int(void);
 773 void *evp_pkey_export_to_provider(EVP_PKEY *pk, OSSL_LIB_CTX *libctx,
 774                                   EVP_KEYMGMT **keymgmt,
 775                                   const char *propquery);
 776 #ifndef FIPS_MODULE
 777 int evp_pkey_copy_downgraded(EVP_PKEY **dest, const EVP_PKEY *src);
 778 void *evp_pkey_get_legacy(EVP_PKEY *pk);
 779 void evp_pkey_free_legacy(EVP_PKEY *x);
 780 EVP_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  */
 791 struct evp_keymgmt_util_try_import_data_st {
 792     EVP_KEYMGMT *keymgmt;
 793     void *keydata;
 794
 795     int selection;
 796 };
 797 int evp_keymgmt_util_try_import(const OSSL_PARAM params[], void *arg);
 798 int evp_keymgmt_util_assign_pkey(EVP_PKEY *pkey, EVP_KEYMGMT *keymgmt,
 799                                  void *keydata);
 800 EVP_PKEY *evp_keymgmt_util_make_pkey(EVP_KEYMGMT *keymgmt, void *keydata);
 801
 802 int evp_keymgmt_util_export(const EVP_PKEY *pk, int selection,
 803                             OSSL_CALLBACK *export_cb, void *export_cbarg);
 804 void *evp_keymgmt_util_export_to_provider(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt,
 805                                           int selection);
 806 OP_CACHE_ELEM *evp_keymgmt_util_find_operation_cache(EVP_PKEY *pk,
 807                                                      EVP_KEYMGMT *keymgmt,
 808                                                      int selection);
 809 int evp_keymgmt_util_clear_operation_cache(EVP_PKEY *pk);
 810 int evp_keymgmt_util_cache_keydata(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt,
 811                                    void *keydata, int selection);
 812 void evp_keymgmt_util_cache_keyinfo(EVP_PKEY *pk);
 813 void *evp_keymgmt_util_fromdata(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
 814                                 int selection, const OSSL_PARAM params[]);
 815 int evp_keymgmt_util_has(EVP_PKEY *pk, int selection);
 816 int evp_keymgmt_util_match(EVP_PKEY *pk1, EVP_PKEY *pk2, int selection);
 817 int evp_keymgmt_util_copy(EVP_PKEY *to, EVP_PKEY *from, int selection);
 818 void *evp_keymgmt_util_gen(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
 819                            void *genctx, OSSL_CALLBACK *cb, void *cbarg);
 820 int evp_keymgmt_util_get_deflt_digest_name(EVP_KEYMGMT *keymgmt,
 821                                            void *keydata,
 822                                            char *mdname, size_t mdname_sz);
 823 const char *evp_keymgmt_util_query_operation_name(EVP_KEYMGMT *keymgmt,
 824                                                   int op_id);
 825
 826 /*
 827  * KEYMGMT provider interface functions
 828  */
 829 void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt);
 830 void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keyddata);
 831 int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt,
 832                            void *keydata, OSSL_PARAM params[]);
 833 int evp_keymgmt_set_params(const EVP_KEYMGMT *keymgmt,
 834                            void *keydata, const OSSL_PARAM params[]);
 835 void *evp_keymgmt_gen_init(const EVP_KEYMGMT *keymgmt, int selection,
 836                            const OSSL_PARAM params[]);
 837 int evp_keymgmt_gen_set_template(const EVP_KEYMGMT *keymgmt, void *genctx,
 838                                  void *templ);
 839 int evp_keymgmt_gen_set_params(const EVP_KEYMGMT *keymgmt, void *genctx,
 840                                const OSSL_PARAM params[]);
 841 int evp_keymgmt_gen_get_params(const EVP_KEYMGMT *keymgmt,
 842                                void *genctx, OSSL_PARAM params[]);
 843 void *evp_keymgmt_gen(const EVP_KEYMGMT *keymgmt, void *genctx,
 844                       OSSL_CALLBACK *cb, void *cbarg);
 845 void evp_keymgmt_gen_cleanup(const EVP_KEYMGMT *keymgmt, void *genctx);
 846
 847 int evp_keymgmt_has_load(const EVP_KEYMGMT *keymgmt);
 848 void *evp_keymgmt_load(const EVP_KEYMGMT *keymgmt,
 849                        const void *objref, size_t objref_sz);
 850
 851 int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keyddata, int selection);
 852 int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
 853                          int selection, int checktype);
 854 int evp_keymgmt_match(const EVP_KEYMGMT *keymgmt,
 855                       const void *keydata1, const void *keydata2,
 856                       int selection);
 857
 858 int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
 859                        int selection, const OSSL_PARAM params[]);
 860 const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
 861                                            int selection);
 862 int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
 863                        int selection, OSSL_CALLBACK *param_cb, void *cbarg);
 864 const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
 865                                            int selection);
 866 void *evp_keymgmt_dup(const EVP_KEYMGMT *keymgmt,
 867                       const void *keydata_from, int selection);
 868 EVP_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  */
 875 EVP_SKEY *evp_skey_alloc(EVP_SKEYMGMT *skeymgmt);
 876 void evp_skeymgmt_freedata(const EVP_SKEYMGMT *keymgmt, void *keyddata);
 877 void *evp_skeymgmt_import(const EVP_SKEYMGMT *skeymgmt, int selection, const OSSL_PARAM params[]);
 878 int evp_skeymgmt_export(const EVP_SKEYMGMT *skeymgmt, void *keydata,
 879                         int selection, OSSL_CALLBACK *param_cb, void *cbarg);
 880 void *evp_skeymgmt_generate(const EVP_SKEYMGMT *skeymgmt, const OSSL_PARAM params[]);
 881 EVP_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
 892 void 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
 900 const EVP_CIPHER *evp_get_cipherbyname_ex(OSSL_LIB_CTX *libctx,
 901                                           const char *name);
 902 const EVP_MD *evp_get_digestbyname_ex(OSSL_LIB_CTX *libctx,
 903                                       const char *name);
 904
 905 int 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  */
 924 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
 925 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
 926
 927 EVP_MD_CTX *evp_md_ctx_new_ex(EVP_PKEY *pkey, const ASN1_OCTET_STRING *id,
 928                               OSSL_LIB_CTX *libctx, const char *propq);
 929 int evp_pkey_name2type(const char *name);
 930 const char *evp_pkey_type2name(int type);
 931
 932 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx);
 933 # endif /* !defined(FIPS_MODULE) */
 934
 935 int evp_method_store_cache_flush(OSSL_LIB_CTX *libctx);
 936 int evp_method_store_remove_all_provided(const OSSL_PROVIDER *prov);
 937
 938 int evp_default_properties_enable_fips_int(OSSL_LIB_CTX *libctx, int enable,
 939                                            int loadconfig);
 940 int evp_set_default_properties_int(OSSL_LIB_CTX *libctx, const char *propq,
 941                                    int loadconfig, int mirrored);
 942 char *evp_get_global_properties_str(OSSL_LIB_CTX *libctx, int loadconfig);
 943
 944 void 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 */
 946 int 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
 952 int evp_pkey_ctx_state(const EVP_PKEY_CTX *ctx);
 953
 954 /* These two must ONLY be called for provider side operations */
 955 int evp_pkey_ctx_ctrl_to_param(EVP_PKEY_CTX *ctx,
 956                                int keytype, int optype,
 957                                int cmd, int p1, void *p2);
 958 int 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 */
 962 int evp_pkey_ctx_set_params_to_ctrl(EVP_PKEY_CTX *ctx, const OSSL_PARAM *params);
 963 int 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 */
 966 int 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
 970 DH *evp_pkey_get0_DH_int(const EVP_PKEY *pkey);
 971 EC_KEY *evp_pkey_get0_EC_KEY_int(const EVP_PKEY *pkey);
 972 RSA *evp_pkey_get0_RSA_int(const EVP_PKEY *pkey);
 973 # endif
 974
 975 /* Get internal identification number routines */
 976 int evp_asym_cipher_get_number(const EVP_ASYM_CIPHER *cipher);
 977 int evp_cipher_get_number(const EVP_CIPHER *cipher);
 978 int evp_kdf_get_number(const EVP_KDF *kdf);
 979 int evp_kem_get_number(const EVP_KEM *wrap);
 980 int evp_keyexch_get_number(const EVP_KEYEXCH *keyexch);
 981 int evp_keymgmt_get_number(const EVP_KEYMGMT *keymgmt);
 982 int evp_keymgmt_get_legacy_alg(const EVP_KEYMGMT *keymgmt);
 983 int evp_mac_get_number(const EVP_MAC *mac);
 984 int evp_md_get_number(const EVP_MD *md);
 985 int evp_rand_get_number(const EVP_RAND *rand);
 986 int evp_rand_can_seed(EVP_RAND_CTX *ctx);
 987 size_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);
 992 void evp_rand_clear_seed(EVP_RAND_CTX *ctx,
 993                          unsigned char *buffer, size_t b_len);
 994 int evp_signature_get_number(const EVP_SIGNATURE *signature);
 995
 996 int 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
1000 int ossl_md2hmacnid(int mdnid);
1001 int ossl_hmac2mdnid(int hmac_nid);
1002
1003 #endif /* OSSL_CRYPTO_EVP_H */