include/crypto/evp.h

   1 /*
   2  * Copyright 2015-2024 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #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 };
 230
 231 struct evp_kdf_st {
 232     OSSL_PROVIDER *prov;
 233     int name_id;
 234     char *type_name;
 235     const char *description;
 236     CRYPTO_REF_COUNT refcnt;
 237
 238     OSSL_FUNC_kdf_newctx_fn *newctx;
 239     OSSL_FUNC_kdf_dupctx_fn *dupctx;
 240     OSSL_FUNC_kdf_freectx_fn *freectx;
 241     OSSL_FUNC_kdf_reset_fn *reset;
 242     OSSL_FUNC_kdf_derive_fn *derive;
 243     OSSL_FUNC_kdf_gettable_params_fn *gettable_params;
 244     OSSL_FUNC_kdf_gettable_ctx_params_fn *gettable_ctx_params;
 245     OSSL_FUNC_kdf_settable_ctx_params_fn *settable_ctx_params;
 246     OSSL_FUNC_kdf_get_params_fn *get_params;
 247     OSSL_FUNC_kdf_get_ctx_params_fn *get_ctx_params;
 248     OSSL_FUNC_kdf_set_ctx_params_fn *set_ctx_params;
 249 };
 250
 251 #define EVP_ORIG_DYNAMIC    0
 252 #define EVP_ORIG_GLOBAL     1
 253 #define EVP_ORIG_METH       2
 254
 255 struct evp_md_st {
 256     /* nid */
 257     int type;
 258
 259     /* Legacy structure members */
 260     int pkey_type;
 261     int md_size;
 262     unsigned long flags;
 263     int origin;
 264     int (*init) (EVP_MD_CTX *ctx);
 265     int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
 266     int (*final) (EVP_MD_CTX *ctx, unsigned char *md);
 267     int (*copy) (EVP_MD_CTX *to, const EVP_MD_CTX *from);
 268     int (*cleanup) (EVP_MD_CTX *ctx);
 269     int block_size;
 270     int ctx_size;               /* how big does the ctx->md_data need to be */
 271     /* control function */
 272     int (*md_ctrl) (EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
 273
 274     /* New structure members */
 275     /* Above comment to be removed when legacy has gone */
 276     int name_id;
 277     char *type_name;
 278     const char *description;
 279     OSSL_PROVIDER *prov;
 280     CRYPTO_REF_COUNT refcnt;
 281     OSSL_FUNC_digest_newctx_fn *newctx;
 282     OSSL_FUNC_digest_init_fn *dinit;
 283     OSSL_FUNC_digest_update_fn *dupdate;
 284     OSSL_FUNC_digest_final_fn *dfinal;
 285     OSSL_FUNC_digest_squeeze_fn *dsqueeze;
 286     OSSL_FUNC_digest_digest_fn *digest;
 287     OSSL_FUNC_digest_freectx_fn *freectx;
 288     OSSL_FUNC_digest_dupctx_fn *dupctx;
 289     OSSL_FUNC_digest_get_params_fn *get_params;
 290     OSSL_FUNC_digest_set_ctx_params_fn *set_ctx_params;
 291     OSSL_FUNC_digest_get_ctx_params_fn *get_ctx_params;
 292     OSSL_FUNC_digest_gettable_params_fn *gettable_params;
 293     OSSL_FUNC_digest_settable_ctx_params_fn *settable_ctx_params;
 294     OSSL_FUNC_digest_gettable_ctx_params_fn *gettable_ctx_params;
 295
 296 } /* EVP_MD */ ;
 297
 298 struct evp_cipher_st {
 299     int nid;
 300
 301     int block_size;
 302     /* Default value for variable length ciphers */
 303     int key_len;
 304     int iv_len;
 305
 306     /* Legacy structure members */
 307     /* Various flags */
 308     unsigned long flags;
 309     /* How the EVP_CIPHER was created. */
 310     int origin;
 311     /* init key */
 312     int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
 313                  const unsigned char *iv, int enc);
 314     /* encrypt/decrypt data */
 315     int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out,
 316                       const unsigned char *in, size_t inl);
 317     /* cleanup ctx */
 318     int (*cleanup) (EVP_CIPHER_CTX *);
 319     /* how big ctx->cipher_data needs to be */
 320     int ctx_size;
 321     /* Populate a ASN1_TYPE with parameters */
 322     int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
 323     /* Get parameters from a ASN1_TYPE */
 324     int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
 325     /* Miscellaneous operations */
 326     int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr);
 327     /* Application data */
 328     void *app_data;
 329
 330     /* New structure members */
 331     /* Above comment to be removed when legacy has gone */
 332     int name_id;
 333     char *type_name;
 334     const char *description;
 335     OSSL_PROVIDER *prov;
 336     CRYPTO_REF_COUNT refcnt;
 337     OSSL_FUNC_cipher_newctx_fn *newctx;
 338     OSSL_FUNC_cipher_encrypt_init_fn *einit;
 339     OSSL_FUNC_cipher_decrypt_init_fn *dinit;
 340     OSSL_FUNC_cipher_update_fn *cupdate;
 341     OSSL_FUNC_cipher_final_fn *cfinal;
 342     OSSL_FUNC_cipher_cipher_fn *ccipher;
 343     OSSL_FUNC_cipher_freectx_fn *freectx;
 344     OSSL_FUNC_cipher_dupctx_fn *dupctx;
 345     OSSL_FUNC_cipher_get_params_fn *get_params;
 346     OSSL_FUNC_cipher_get_ctx_params_fn *get_ctx_params;
 347     OSSL_FUNC_cipher_set_ctx_params_fn *set_ctx_params;
 348     OSSL_FUNC_cipher_gettable_params_fn *gettable_params;
 349     OSSL_FUNC_cipher_gettable_ctx_params_fn *gettable_ctx_params;
 350     OSSL_FUNC_cipher_settable_ctx_params_fn *settable_ctx_params;
 351 } /* EVP_CIPHER */ ;
 352
 353 /* Macros to code block cipher wrappers */
 354
 355 /* Wrapper functions for each cipher mode */
 356
 357 #define EVP_C_DATA(kstruct, ctx) \
 358         ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx))
 359
 360 #define BLOCK_CIPHER_ecb_loop() \
 361         size_t i, bl; \
 362         bl = EVP_CIPHER_CTX_get0_cipher(ctx)->block_size;    \
 363         if (inl < bl) return 1;\
 364         inl -= bl; \
 365         for (i=0; i <= inl; i+=bl)
 366
 367 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
 368 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 369 {\
 370         BLOCK_CIPHER_ecb_loop() \
 371             cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_is_encrypting(ctx)); \
 372         return 1;\
 373 }
 374
 375 #define EVP_MAXCHUNK ((size_t)1 << 30)
 376
 377 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
 378     static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 379 {\
 380         while(inl>=EVP_MAXCHUNK) {\
 381             int num = EVP_CIPHER_CTX_get_num(ctx);\
 382             cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, &num); \
 383             EVP_CIPHER_CTX_set_num(ctx, num);\
 384             inl-=EVP_MAXCHUNK;\
 385             in +=EVP_MAXCHUNK;\
 386             out+=EVP_MAXCHUNK;\
 387         }\
 388         if (inl) {\
 389             int num = EVP_CIPHER_CTX_get_num(ctx);\
 390             cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, &num); \
 391             EVP_CIPHER_CTX_set_num(ctx, num);\
 392         }\
 393         return 1;\
 394 }
 395
 396 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
 397 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 398 {\
 399         while(inl>=EVP_MAXCHUNK) \
 400             {\
 401             cprefix##_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, EVP_CIPHER_CTX_is_encrypting(ctx));\
 402             inl-=EVP_MAXCHUNK;\
 403             in +=EVP_MAXCHUNK;\
 404             out+=EVP_MAXCHUNK;\
 405             }\
 406         if (inl)\
 407             cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, EVP_CIPHER_CTX_is_encrypting(ctx));\
 408         return 1;\
 409 }
 410
 411 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched)  \
 412 static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 413 {\
 414     size_t chunk = EVP_MAXCHUNK;\
 415     if (cbits == 1)  chunk >>= 3;\
 416     if (inl < chunk) chunk = inl;\
 417     while (inl && inl >= chunk)\
 418     {\
 419         int num = EVP_CIPHER_CTX_get_num(ctx);\
 420         cprefix##_cfb##cbits##_encrypt(in, out, (long) \
 421             ((cbits == 1) \
 422                 && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \
 423                 ? chunk*8 : chunk), \
 424             &EVP_C_DATA(kstruct, ctx)->ksched, ctx->iv,\
 425             &num, EVP_CIPHER_CTX_is_encrypting(ctx));\
 426         EVP_CIPHER_CTX_set_num(ctx, num);\
 427         inl -= chunk;\
 428         in += chunk;\
 429         out += chunk;\
 430         if (inl < chunk) chunk = inl;\
 431     }\
 432     return 1;\
 433 }
 434
 435 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 436         BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
 437         BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
 438         BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
 439         BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
 440
 441 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
 442                           key_len, iv_len, flags, init_key, cleanup, \
 443                           set_asn1, get_asn1, ctrl) \
 444 static const EVP_CIPHER cname##_##mode = { \
 445         nid##_##nmode, block_size, key_len, iv_len, \
 446         flags | EVP_CIPH_##MODE##_MODE, \
 447         EVP_ORIG_GLOBAL, \
 448         init_key, \
 449         cname##_##mode##_cipher, \
 450         cleanup, \
 451         sizeof(kstruct), \
 452         set_asn1, get_asn1,\
 453         ctrl, \
 454         NULL \
 455 }; \
 456 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
 457
 458 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
 459                              iv_len, flags, init_key, cleanup, set_asn1, \
 460                              get_asn1, ctrl) \
 461 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
 462                   iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 463
 464 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
 465                              iv_len, cbits, flags, init_key, cleanup, \
 466                              set_asn1, get_asn1, ctrl) \
 467 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
 468                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 469                   get_asn1, ctrl)
 470
 471 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
 472                              iv_len, cbits, flags, init_key, cleanup, \
 473                              set_asn1, get_asn1, ctrl) \
 474 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
 475                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 476                   get_asn1, ctrl)
 477
 478 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
 479                              flags, init_key, cleanup, set_asn1, \
 480                              get_asn1, ctrl) \
 481 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
 482                   0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 483
 484 #define BLOCK_CIPHER_defs(cname, kstruct, \
 485                           nid, block_size, key_len, iv_len, cbits, flags, \
 486                           init_key, cleanup, set_asn1, get_asn1, ctrl) \
 487 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
 488                      init_key, cleanup, set_asn1, get_asn1, ctrl) \
 489 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
 490                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 491 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
 492                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 493 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
 494                      init_key, cleanup, set_asn1, get_asn1, ctrl)
 495
 496 /*-
 497 #define BLOCK_CIPHER_defs(cname, kstruct, \
 498                                 nid, block_size, key_len, iv_len, flags,\
 499                                  init_key, cleanup, set_asn1, get_asn1, ctrl)\
 500 static const EVP_CIPHER cname##_cbc = {\
 501         nid##_cbc, block_size, key_len, iv_len, \
 502         flags | EVP_CIPH_CBC_MODE,\
 503         EVP_ORIG_GLOBAL,\
 504         init_key,\
 505         cname##_cbc_cipher,\
 506         cleanup,\
 507         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 508                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 509         set_asn1, get_asn1,\
 510         ctrl, \
 511         NULL \
 512 };\
 513 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
 514 static const EVP_CIPHER cname##_cfb = {\
 515         nid##_cfb64, 1, key_len, iv_len, \
 516         flags | EVP_CIPH_CFB_MODE,\
 517         EVP_ORIG_GLOBAL,\
 518         init_key,\
 519         cname##_cfb_cipher,\
 520         cleanup,\
 521         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 522                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 523         set_asn1, get_asn1,\
 524         ctrl,\
 525         NULL \
 526 };\
 527 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
 528 static const EVP_CIPHER cname##_ofb = {\
 529         nid##_ofb64, 1, key_len, iv_len, \
 530         flags | EVP_CIPH_OFB_MODE,\
 531         EVP_ORIG_GLOBAL,\
 532         init_key,\
 533         cname##_ofb_cipher,\
 534         cleanup,\
 535         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 536                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 537         set_asn1, get_asn1,\
 538         ctrl,\
 539         NULL \
 540 };\
 541 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
 542 static const EVP_CIPHER cname##_ecb = {\
 543         nid##_ecb, block_size, key_len, iv_len, \
 544         flags | EVP_CIPH_ECB_MODE,\
 545         EVP_ORIG_GLOBAL,\
 546         init_key,\
 547         cname##_ecb_cipher,\
 548         cleanup,\
 549         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 550                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 551         set_asn1, get_asn1,\
 552         ctrl,\
 553         NULL \
 554 };\
 555 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
 556 */
 557
 558 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
 559                                block_size, key_len, iv_len, cbits, \
 560                                flags, init_key, \
 561                                cleanup, set_asn1, get_asn1, ctrl) \
 562         BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 563         BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
 564                           cbits, flags, init_key, cleanup, set_asn1, \
 565                           get_asn1, ctrl)
 566
 567 #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
 568         BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
 569         BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
 570                              NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
 571                              (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
 572                              cipher##_init_key, NULL, NULL, NULL, NULL)
 573
 574 typedef struct {
 575     unsigned char iv[EVP_MAX_IV_LENGTH];
 576     unsigned int iv_len;
 577     unsigned int tag_len;
 578 } evp_cipher_aead_asn1_params;
 579
 580 int evp_cipher_param_to_asn1_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
 581                                 evp_cipher_aead_asn1_params *params);
 582
 583 int evp_cipher_asn1_to_param_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
 584                                 evp_cipher_aead_asn1_params *params);
 585
 586 /*
 587  * To support transparent execution of operation in backends other
 588  * than the "origin" key, we support transparent export/import to
 589  * those providers, and maintain a cache of the imported keydata,
 590  * so we don't need to redo the export/import every time we perform
 591  * the same operation in that same provider.
 592  * This requires that the "origin" backend (whether it's a legacy or a
 593  * provider "origin") implements exports, and that the target provider
 594  * has an EVP_KEYMGMT that implements import.
 595  */
 596 typedef struct {
 597     EVP_KEYMGMT *keymgmt;
 598     void *keydata;
 599     int selection;
 600 } OP_CACHE_ELEM;
 601
 602 DEFINE_STACK_OF(OP_CACHE_ELEM)
 603
 604 /*
 605  * An EVP_PKEY can have the following states:
 606  *
 607  * untyped & empty:
 608  *
 609  *     type == EVP_PKEY_NONE && keymgmt == NULL
 610  *
 611  * typed & empty:
 612  *
 613  *     (type != EVP_PKEY_NONE && pkey.ptr == NULL)      ## legacy (libcrypto only)
 614  *     || (keymgmt != NULL && keydata == NULL)          ## provider side
 615  *
 616  * fully assigned:
 617  *
 618  *     (type != EVP_PKEY_NONE && pkey.ptr != NULL)      ## legacy (libcrypto only)
 619  *     || (keymgmt != NULL && keydata != NULL)          ## provider side
 620  *
 621  * The easiest way to detect a legacy key is:
 622  *
 623  *     keymgmt == NULL && type != EVP_PKEY_NONE
 624  *
 625  * The easiest way to detect a provider side key is:
 626  *
 627  *     keymgmt != NULL
 628  */
 629 #define evp_pkey_is_blank(pk)                                   \
 630     ((pk)->type == EVP_PKEY_NONE && (pk)->keymgmt == NULL)
 631 #define evp_pkey_is_typed(pk)                                   \
 632     ((pk)->type != EVP_PKEY_NONE || (pk)->keymgmt != NULL)
 633 #ifndef FIPS_MODULE
 634 # define evp_pkey_is_assigned(pk)                               \
 635     ((pk)->pkey.ptr != NULL || (pk)->keydata != NULL)
 636 #else
 637 # define evp_pkey_is_assigned(pk)                               \
 638     ((pk)->keydata != NULL)
 639 #endif
 640 #define evp_pkey_is_legacy(pk)                                  \
 641     ((pk)->type != EVP_PKEY_NONE && (pk)->keymgmt == NULL)
 642 #define evp_pkey_is_provided(pk)                                \
 643     ((pk)->keymgmt != NULL)
 644
 645 union legacy_pkey_st {
 646     void *ptr;
 647     struct rsa_st *rsa;     /* RSA */
 648 #  ifndef OPENSSL_NO_DSA
 649     struct dsa_st *dsa;     /* DSA */
 650 #  endif
 651 #  ifndef OPENSSL_NO_DH
 652     struct dh_st *dh;       /* DH */
 653 #  endif
 654 #  ifndef OPENSSL_NO_EC
 655     struct ec_key_st *ec;   /* ECC */
 656 #   ifndef OPENSSL_NO_ECX
 657     ECX_KEY *ecx;           /* X25519, X448, Ed25519, Ed448 */
 658 #   endif
 659 #  endif
 660 };
 661
 662 struct evp_pkey_st {
 663     /* == Legacy attributes == */
 664     int type;
 665     int save_type;
 666
 667 # ifndef FIPS_MODULE
 668     /*
 669      * Legacy key "origin" is composed of a pointer to an EVP_PKEY_ASN1_METHOD,
 670      * a pointer to a low level key and possibly a pointer to an engine.
 671      */
 672     const EVP_PKEY_ASN1_METHOD *ameth;
 673     ENGINE *engine;
 674     ENGINE *pmeth_engine; /* If not NULL public key ENGINE to use */
 675
 676     /* Union to store the reference to an origin legacy key */
 677     union legacy_pkey_st pkey;
 678
 679     /* Union to store the reference to a non-origin legacy key */
 680     union legacy_pkey_st legacy_cache_pkey;
 681 # endif
 682
 683     /* == Common attributes == */
 684     CRYPTO_REF_COUNT references;
 685     CRYPTO_RWLOCK *lock;
 686 #ifndef FIPS_MODULE
 687     STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
 688     int save_parameters;
 689     unsigned int foreign:1; /* the low-level key is using an engine or an app-method */
 690     CRYPTO_EX_DATA ex_data;
 691 #endif
 692
 693     /* == Provider attributes == */
 694
 695     /*
 696      * Provider keydata "origin" is composed of a pointer to an EVP_KEYMGMT
 697      * and a pointer to the provider side key data.  This is never used at
 698      * the same time as the legacy key data above.
 699      */
 700     EVP_KEYMGMT *keymgmt;
 701     void *keydata;
 702     /*
 703      * If any libcrypto code does anything that may modify the keydata
 704      * contents, this dirty counter must be incremented.
 705      */
 706     size_t dirty_cnt;
 707
 708     /*
 709      * To support transparent execution of operation in backends other
 710      * than the "origin" key, we support transparent export/import to
 711      * those providers, and maintain a cache of the imported keydata,
 712      * so we don't need to redo the export/import every time we perform
 713      * the same operation in that same provider.
 714      */
 715     STACK_OF(OP_CACHE_ELEM) *operation_cache;
 716
 717     /*
 718      * We keep a copy of that "origin"'s dirty count, so we know if the
 719      * operation cache needs flushing.
 720      */
 721     size_t dirty_cnt_copy;
 722
 723     /* Cache of key object information */
 724     struct {
 725         int bits;
 726         int security_bits;
 727         int size;
 728     } cache;
 729 } /* EVP_PKEY */ ;
 730
 731 #define EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) \
 732     ((ctx)->operation == EVP_PKEY_OP_SIGN \
 733      || (ctx)->operation == EVP_PKEY_OP_SIGNCTX \
 734      || (ctx)->operation == EVP_PKEY_OP_VERIFY \
 735      || (ctx)->operation == EVP_PKEY_OP_VERIFYCTX \
 736      || (ctx)->operation == EVP_PKEY_OP_VERIFYRECOVER)
 737
 738 #define EVP_PKEY_CTX_IS_DERIVE_OP(ctx) \
 739     ((ctx)->operation == EVP_PKEY_OP_DERIVE)
 740
 741 #define EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) \
 742     ((ctx)->operation == EVP_PKEY_OP_ENCRYPT \
 743      || (ctx)->operation == EVP_PKEY_OP_DECRYPT)
 744
 745 #define EVP_PKEY_CTX_IS_GEN_OP(ctx) \
 746     ((ctx)->operation == EVP_PKEY_OP_PARAMGEN \
 747      || (ctx)->operation == EVP_PKEY_OP_KEYGEN)
 748
 749 #define EVP_PKEY_CTX_IS_FROMDATA_OP(ctx) \
 750     ((ctx)->operation == EVP_PKEY_OP_FROMDATA)
 751
 752 #define EVP_PKEY_CTX_IS_KEM_OP(ctx) \
 753     ((ctx)->operation == EVP_PKEY_OP_ENCAPSULATE \
 754      || (ctx)->operation == EVP_PKEY_OP_DECAPSULATE)
 755
 756 void openssl_add_all_ciphers_int(void);
 757 void openssl_add_all_digests_int(void);
 758 void evp_cleanup_int(void);
 759 void evp_app_cleanup_int(void);
 760 void *evp_pkey_export_to_provider(EVP_PKEY *pk, OSSL_LIB_CTX *libctx,
 761                                   EVP_KEYMGMT **keymgmt,
 762                                   const char *propquery);
 763 #ifndef FIPS_MODULE
 764 int evp_pkey_copy_downgraded(EVP_PKEY **dest, const EVP_PKEY *src);
 765 void *evp_pkey_get_legacy(EVP_PKEY *pk);
 766 void evp_pkey_free_legacy(EVP_PKEY *x);
 767 EVP_PKEY *evp_pkcs82pkey_legacy(const PKCS8_PRIV_KEY_INFO *p8inf,
 768                                 OSSL_LIB_CTX *libctx, const char *propq);
 769 #endif
 770
 771 /*
 772  * KEYMGMT utility functions
 773  */
 774
 775 /*
 776  * Key import structure and helper function, to be used as an export callback
 777  */
 778 struct evp_keymgmt_util_try_import_data_st {
 779     EVP_KEYMGMT *keymgmt;
 780     void *keydata;
 781
 782     int selection;
 783 };
 784 int evp_keymgmt_util_try_import(const OSSL_PARAM params[], void *arg);
 785 int evp_keymgmt_util_assign_pkey(EVP_PKEY *pkey, EVP_KEYMGMT *keymgmt,
 786                                  void *keydata);
 787 EVP_PKEY *evp_keymgmt_util_make_pkey(EVP_KEYMGMT *keymgmt, void *keydata);
 788
 789 int evp_keymgmt_util_export(const EVP_PKEY *pk, int selection,
 790                             OSSL_CALLBACK *export_cb, void *export_cbarg);
 791 void *evp_keymgmt_util_export_to_provider(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt,
 792                                           int selection);
 793 OP_CACHE_ELEM *evp_keymgmt_util_find_operation_cache(EVP_PKEY *pk,
 794                                                      EVP_KEYMGMT *keymgmt,
 795                                                      int selection);
 796 int evp_keymgmt_util_clear_operation_cache(EVP_PKEY *pk);
 797 int evp_keymgmt_util_cache_keydata(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt,
 798                                    void *keydata, int selection);
 799 void evp_keymgmt_util_cache_keyinfo(EVP_PKEY *pk);
 800 void *evp_keymgmt_util_fromdata(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
 801                                 int selection, const OSSL_PARAM params[]);
 802 int evp_keymgmt_util_has(EVP_PKEY *pk, int selection);
 803 int evp_keymgmt_util_match(EVP_PKEY *pk1, EVP_PKEY *pk2, int selection);
 804 int evp_keymgmt_util_copy(EVP_PKEY *to, EVP_PKEY *from, int selection);
 805 void *evp_keymgmt_util_gen(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
 806                            void *genctx, OSSL_CALLBACK *cb, void *cbarg);
 807 int evp_keymgmt_util_get_deflt_digest_name(EVP_KEYMGMT *keymgmt,
 808                                            void *keydata,
 809                                            char *mdname, size_t mdname_sz);
 810 const char *evp_keymgmt_util_query_operation_name(EVP_KEYMGMT *keymgmt,
 811                                                   int op_id);
 812
 813 /*
 814  * KEYMGMT provider interface functions
 815  */
 816 void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt);
 817 void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keyddata);
 818 int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt,
 819                            void *keydata, OSSL_PARAM params[]);
 820 int evp_keymgmt_set_params(const EVP_KEYMGMT *keymgmt,
 821                            void *keydata, const OSSL_PARAM params[]);
 822 void *evp_keymgmt_gen_init(const EVP_KEYMGMT *keymgmt, int selection,
 823                            const OSSL_PARAM params[]);
 824 int evp_keymgmt_gen_set_template(const EVP_KEYMGMT *keymgmt, void *genctx,
 825                                  void *templ);
 826 int evp_keymgmt_gen_set_params(const EVP_KEYMGMT *keymgmt, void *genctx,
 827                                const OSSL_PARAM params[]);
 828 void *evp_keymgmt_gen(const EVP_KEYMGMT *keymgmt, void *genctx,
 829                       OSSL_CALLBACK *cb, void *cbarg);
 830 void evp_keymgmt_gen_cleanup(const EVP_KEYMGMT *keymgmt, void *genctx);
 831
 832 int evp_keymgmt_has_load(const EVP_KEYMGMT *keymgmt);
 833 void *evp_keymgmt_load(const EVP_KEYMGMT *keymgmt,
 834                        const void *objref, size_t objref_sz);
 835
 836 int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keyddata, int selection);
 837 int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
 838                          int selection, int checktype);
 839 int evp_keymgmt_match(const EVP_KEYMGMT *keymgmt,
 840                       const void *keydata1, const void *keydata2,
 841                       int selection);
 842
 843 int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
 844                        int selection, const OSSL_PARAM params[]);
 845 const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
 846                                            int selection);
 847 int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
 848                        int selection, OSSL_CALLBACK *param_cb, void *cbarg);
 849 const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
 850                                            int selection);
 851 void *evp_keymgmt_dup(const EVP_KEYMGMT *keymgmt,
 852                       const void *keydata_from, int selection);
 853 EVP_KEYMGMT *evp_keymgmt_fetch_from_prov(OSSL_PROVIDER *prov,
 854                                          const char *name,
 855                                          const char *properties);
 856
 857 /* Pulling defines out of C source files */
 858
 859 # define EVP_RC4_KEY_SIZE 16
 860 # ifndef TLS1_1_VERSION
 861 #  define TLS1_1_VERSION   0x0302
 862 # endif
 863
 864 void evp_encode_ctx_set_flags(EVP_ENCODE_CTX *ctx, unsigned int flags);
 865
 866 /* EVP_ENCODE_CTX flags */
 867 /* Don't generate new lines when encoding */
 868 #define EVP_ENCODE_CTX_NO_NEWLINES          1
 869 /* Use the SRP base64 alphabet instead of the standard one */
 870 #define EVP_ENCODE_CTX_USE_SRP_ALPHABET     2
 871
 872 const EVP_CIPHER *evp_get_cipherbyname_ex(OSSL_LIB_CTX *libctx,
 873                                           const char *name);
 874 const EVP_MD *evp_get_digestbyname_ex(OSSL_LIB_CTX *libctx,
 875                                       const char *name);
 876
 877 int ossl_pkcs5_pbkdf2_hmac_ex(const char *pass, int passlen,
 878                               const unsigned char *salt, int saltlen, int iter,
 879                               const EVP_MD *digest, int keylen,
 880                               unsigned char *out,
 881                               OSSL_LIB_CTX *libctx, const char *propq);
 882
 883 # ifndef FIPS_MODULE
 884 /*
 885  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 886  *
 887  * Return 1 on success, 0 or negative for errors.
 888  *
 889  * In particular they return -2 if any of the params is not supported.
 890  *
 891  * They are not available in FIPS_MODULE as they depend on
 892  *      - EVP_PKEY_CTX_{get,set}_params()
 893  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 894  *
 895  */
 896 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
 897 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
 898
 899 EVP_MD_CTX *evp_md_ctx_new_ex(EVP_PKEY *pkey, const ASN1_OCTET_STRING *id,
 900                               OSSL_LIB_CTX *libctx, const char *propq);
 901 int evp_pkey_name2type(const char *name);
 902 const char *evp_pkey_type2name(int type);
 903
 904 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx);
 905 # endif /* !defined(FIPS_MODULE) */
 906
 907 int evp_method_store_cache_flush(OSSL_LIB_CTX *libctx);
 908 int evp_method_store_remove_all_provided(const OSSL_PROVIDER *prov);
 909
 910 int evp_default_properties_enable_fips_int(OSSL_LIB_CTX *libctx, int enable,
 911                                            int loadconfig);
 912 int evp_set_default_properties_int(OSSL_LIB_CTX *libctx, const char *propq,
 913                                    int loadconfig, int mirrored);
 914 char *evp_get_global_properties_str(OSSL_LIB_CTX *libctx, int loadconfig);
 915
 916 void evp_md_ctx_clear_digest(EVP_MD_CTX *ctx, int force, int keep_digest);
 917 /* just free the algctx if set, returns 0 on inconsistent state of ctx */
 918 int evp_md_ctx_free_algctx(EVP_MD_CTX *ctx);
 919
 920 /* Three possible states: */
 921 # define EVP_PKEY_STATE_UNKNOWN         0
 922 # define EVP_PKEY_STATE_LEGACY          1
 923 # define EVP_PKEY_STATE_PROVIDER        2
 924 int evp_pkey_ctx_state(const EVP_PKEY_CTX *ctx);
 925
 926 /* These two must ONLY be called for provider side operations */
 927 int evp_pkey_ctx_ctrl_to_param(EVP_PKEY_CTX *ctx,
 928                                int keytype, int optype,
 929                                int cmd, int p1, void *p2);
 930 int evp_pkey_ctx_ctrl_str_to_param(EVP_PKEY_CTX *ctx,
 931                                    const char *name, const char *value);
 932
 933 /* These two must ONLY be called for legacy operations */
 934 int evp_pkey_ctx_set_params_to_ctrl(EVP_PKEY_CTX *ctx, const OSSL_PARAM *params);
 935 int evp_pkey_ctx_get_params_to_ctrl(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
 936
 937 /* This must ONLY be called for legacy EVP_PKEYs */
 938 int evp_pkey_get_params_to_ctrl(const EVP_PKEY *pkey, OSSL_PARAM *params);
 939
 940 /* Same as the public get0 functions but are not const */
 941 # ifndef OPENSSL_NO_DEPRECATED_3_0
 942 DH *evp_pkey_get0_DH_int(const EVP_PKEY *pkey);
 943 EC_KEY *evp_pkey_get0_EC_KEY_int(const EVP_PKEY *pkey);
 944 RSA *evp_pkey_get0_RSA_int(const EVP_PKEY *pkey);
 945 # endif
 946
 947 /* Get internal identification number routines */
 948 int evp_asym_cipher_get_number(const EVP_ASYM_CIPHER *cipher);
 949 int evp_cipher_get_number(const EVP_CIPHER *cipher);
 950 int evp_kdf_get_number(const EVP_KDF *kdf);
 951 int evp_kem_get_number(const EVP_KEM *wrap);
 952 int evp_keyexch_get_number(const EVP_KEYEXCH *keyexch);
 953 int evp_keymgmt_get_number(const EVP_KEYMGMT *keymgmt);
 954 int evp_keymgmt_get_legacy_alg(const EVP_KEYMGMT *keymgmt);
 955 int evp_mac_get_number(const EVP_MAC *mac);
 956 int evp_md_get_number(const EVP_MD *md);
 957 int evp_rand_get_number(const EVP_RAND *rand);
 958 int evp_rand_can_seed(EVP_RAND_CTX *ctx);
 959 size_t evp_rand_get_seed(EVP_RAND_CTX *ctx,
 960                          unsigned char **buffer,
 961                          int entropy, size_t min_len, size_t max_len,
 962                          int prediction_resistance,
 963                          const unsigned char *adin, size_t adin_len);
 964 void evp_rand_clear_seed(EVP_RAND_CTX *ctx,
 965                          unsigned char *buffer, size_t b_len);
 966 int evp_signature_get_number(const EVP_SIGNATURE *signature);
 967
 968 int evp_pkey_decrypt_alloc(EVP_PKEY_CTX *ctx, unsigned char **outp,
 969                            size_t *outlenp, size_t expected_outlen,
 970                            const unsigned char *in, size_t inlen);
 971
 972 #endif /* OSSL_CRYPTO_EVP_H */