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