include/crypto/evp.h

   1 /*
   2  * Copyright 2015-2023 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_digest_fn *digest;
 286     OSSL_FUNC_digest_freectx_fn *freectx;
 287     OSSL_FUNC_digest_dupctx_fn *dupctx;
 288     OSSL_FUNC_digest_get_params_fn *get_params;
 289     OSSL_FUNC_digest_set_ctx_params_fn *set_ctx_params;
 290     OSSL_FUNC_digest_get_ctx_params_fn *get_ctx_params;
 291     OSSL_FUNC_digest_gettable_params_fn *gettable_params;
 292     OSSL_FUNC_digest_settable_ctx_params_fn *settable_ctx_params;
 293     OSSL_FUNC_digest_gettable_ctx_params_fn *gettable_ctx_params;
 294
 295 } /* EVP_MD */ ;
 296
 297 struct evp_cipher_st {
 298     int nid;
 299
 300     int block_size;
 301     /* Default value for variable length ciphers */
 302     int key_len;
 303     int iv_len;
 304
 305     /* Legacy structure members */
 306     /* Various flags */
 307     unsigned long flags;
 308     /* How the EVP_CIPHER was created. */
 309     int origin;
 310     /* init key */
 311     int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
 312                  const unsigned char *iv, int enc);
 313     /* encrypt/decrypt data */
 314     int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out,
 315                       const unsigned char *in, size_t inl);
 316     /* cleanup ctx */
 317     int (*cleanup) (EVP_CIPHER_CTX *);
 318     /* how big ctx->cipher_data needs to be */
 319     int ctx_size;
 320     /* Populate a ASN1_TYPE with parameters */
 321     int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
 322     /* Get parameters from a ASN1_TYPE */
 323     int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
 324     /* Miscellaneous operations */
 325     int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr);
 326     /* Application data */
 327     void *app_data;
 328
 329     /* New structure members */
 330     /* Above comment to be removed when legacy has gone */
 331     int name_id;
 332     char *type_name;
 333     const char *description;
 334     OSSL_PROVIDER *prov;
 335     CRYPTO_REF_COUNT refcnt;
 336     OSSL_FUNC_cipher_newctx_fn *newctx;
 337     OSSL_FUNC_cipher_encrypt_init_fn *einit;
 338     OSSL_FUNC_cipher_decrypt_init_fn *dinit;
 339     OSSL_FUNC_cipher_update_fn *cupdate;
 340     OSSL_FUNC_cipher_final_fn *cfinal;
 341     OSSL_FUNC_cipher_cipher_fn *ccipher;
 342     OSSL_FUNC_cipher_freectx_fn *freectx;
 343     OSSL_FUNC_cipher_dupctx_fn *dupctx;
 344     OSSL_FUNC_cipher_get_params_fn *get_params;
 345     OSSL_FUNC_cipher_get_ctx_params_fn *get_ctx_params;
 346     OSSL_FUNC_cipher_set_ctx_params_fn *set_ctx_params;
 347     OSSL_FUNC_cipher_gettable_params_fn *gettable_params;
 348     OSSL_FUNC_cipher_gettable_ctx_params_fn *gettable_ctx_params;
 349     OSSL_FUNC_cipher_settable_ctx_params_fn *settable_ctx_params;
 350 } /* EVP_CIPHER */ ;
 351
 352 /* Macros to code block cipher wrappers */
 353
 354 /* Wrapper functions for each cipher mode */
 355
 356 #define EVP_C_DATA(kstruct, ctx) \
 357         ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx))
 358
 359 #define BLOCK_CIPHER_ecb_loop() \
 360         size_t i, bl; \
 361         bl = EVP_CIPHER_CTX_get0_cipher(ctx)->block_size;    \
 362         if (inl < bl) return 1;\
 363         inl -= bl; \
 364         for (i=0; i <= inl; i+=bl)
 365
 366 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
 367 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 368 {\
 369         BLOCK_CIPHER_ecb_loop() \
 370             cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_is_encrypting(ctx)); \
 371         return 1;\
 372 }
 373
 374 #define EVP_MAXCHUNK ((size_t)1 << 30)
 375
 376 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
 377     static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 378 {\
 379         while(inl>=EVP_MAXCHUNK) {\
 380             int num = EVP_CIPHER_CTX_get_num(ctx);\
 381             cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, &num); \
 382             EVP_CIPHER_CTX_set_num(ctx, num);\
 383             inl-=EVP_MAXCHUNK;\
 384             in +=EVP_MAXCHUNK;\
 385             out+=EVP_MAXCHUNK;\
 386         }\
 387         if (inl) {\
 388             int num = EVP_CIPHER_CTX_get_num(ctx);\
 389             cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, &num); \
 390             EVP_CIPHER_CTX_set_num(ctx, num);\
 391         }\
 392         return 1;\
 393 }
 394
 395 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
 396 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 397 {\
 398         while(inl>=EVP_MAXCHUNK) \
 399             {\
 400             cprefix##_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, EVP_CIPHER_CTX_is_encrypting(ctx));\
 401             inl-=EVP_MAXCHUNK;\
 402             in +=EVP_MAXCHUNK;\
 403             out+=EVP_MAXCHUNK;\
 404             }\
 405         if (inl)\
 406             cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, EVP_CIPHER_CTX_is_encrypting(ctx));\
 407         return 1;\
 408 }
 409
 410 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched)  \
 411 static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 412 {\
 413     size_t chunk = EVP_MAXCHUNK;\
 414     if (cbits == 1)  chunk >>= 3;\
 415     if (inl < chunk) chunk = inl;\
 416     while (inl && inl >= chunk)\
 417     {\
 418         int num = EVP_CIPHER_CTX_get_num(ctx);\
 419         cprefix##_cfb##cbits##_encrypt(in, out, (long) \
 420             ((cbits == 1) \
 421                 && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \
 422                 ? chunk*8 : chunk), \
 423             &EVP_C_DATA(kstruct, ctx)->ksched, ctx->iv,\
 424             &num, EVP_CIPHER_CTX_is_encrypting(ctx));\
 425         EVP_CIPHER_CTX_set_num(ctx, num);\
 426         inl -= chunk;\
 427         in += chunk;\
 428         out += chunk;\
 429         if (inl < chunk) chunk = inl;\
 430     }\
 431     return 1;\
 432 }
 433
 434 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 435         BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
 436         BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
 437         BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
 438         BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
 439
 440 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
 441                           key_len, iv_len, flags, init_key, cleanup, \
 442                           set_asn1, get_asn1, ctrl) \
 443 static const EVP_CIPHER cname##_##mode = { \
 444         nid##_##nmode, block_size, key_len, iv_len, \
 445         flags | EVP_CIPH_##MODE##_MODE, \
 446         EVP_ORIG_GLOBAL, \
 447         init_key, \
 448         cname##_##mode##_cipher, \
 449         cleanup, \
 450         sizeof(kstruct), \
 451         set_asn1, get_asn1,\
 452         ctrl, \
 453         NULL \
 454 }; \
 455 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
 456
 457 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
 458                              iv_len, flags, init_key, cleanup, set_asn1, \
 459                              get_asn1, ctrl) \
 460 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
 461                   iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 462
 463 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
 464                              iv_len, cbits, flags, init_key, cleanup, \
 465                              set_asn1, get_asn1, ctrl) \
 466 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
 467                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 468                   get_asn1, ctrl)
 469
 470 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
 471                              iv_len, cbits, flags, init_key, cleanup, \
 472                              set_asn1, get_asn1, ctrl) \
 473 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
 474                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 475                   get_asn1, ctrl)
 476
 477 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
 478                              flags, init_key, cleanup, set_asn1, \
 479                              get_asn1, ctrl) \
 480 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
 481                   0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 482
 483 #define BLOCK_CIPHER_defs(cname, kstruct, \
 484                           nid, block_size, key_len, iv_len, cbits, flags, \
 485                           init_key, cleanup, set_asn1, get_asn1, ctrl) \
 486 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
 487                      init_key, cleanup, set_asn1, get_asn1, ctrl) \
 488 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
 489                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 490 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
 491                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 492 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
 493                      init_key, cleanup, set_asn1, get_asn1, ctrl)
 494
 495 /*-
 496 #define BLOCK_CIPHER_defs(cname, kstruct, \
 497                                 nid, block_size, key_len, iv_len, flags,\
 498                                  init_key, cleanup, set_asn1, get_asn1, ctrl)\
 499 static const EVP_CIPHER cname##_cbc = {\
 500         nid##_cbc, block_size, key_len, iv_len, \
 501         flags | EVP_CIPH_CBC_MODE,\
 502         EVP_ORIG_GLOBAL,\
 503         init_key,\
 504         cname##_cbc_cipher,\
 505         cleanup,\
 506         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 507                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 508         set_asn1, get_asn1,\
 509         ctrl, \
 510         NULL \
 511 };\
 512 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
 513 static const EVP_CIPHER cname##_cfb = {\
 514         nid##_cfb64, 1, key_len, iv_len, \
 515         flags | EVP_CIPH_CFB_MODE,\
 516         EVP_ORIG_GLOBAL,\
 517         init_key,\
 518         cname##_cfb_cipher,\
 519         cleanup,\
 520         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 521                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 522         set_asn1, get_asn1,\
 523         ctrl,\
 524         NULL \
 525 };\
 526 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
 527 static const EVP_CIPHER cname##_ofb = {\
 528         nid##_ofb64, 1, key_len, iv_len, \
 529         flags | EVP_CIPH_OFB_MODE,\
 530         EVP_ORIG_GLOBAL,\
 531         init_key,\
 532         cname##_ofb_cipher,\
 533         cleanup,\
 534         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 535                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 536         set_asn1, get_asn1,\
 537         ctrl,\
 538         NULL \
 539 };\
 540 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
 541 static const EVP_CIPHER cname##_ecb = {\
 542         nid##_ecb, block_size, key_len, iv_len, \
 543         flags | EVP_CIPH_ECB_MODE,\
 544         EVP_ORIG_GLOBAL,\
 545         init_key,\
 546         cname##_ecb_cipher,\
 547         cleanup,\
 548         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 549                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 550         set_asn1, get_asn1,\
 551         ctrl,\
 552         NULL \
 553 };\
 554 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
 555 */
 556
 557 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
 558                                block_size, key_len, iv_len, cbits, \
 559                                flags, init_key, \
 560                                cleanup, set_asn1, get_asn1, ctrl) \
 561         BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 562         BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
 563                           cbits, flags, init_key, cleanup, set_asn1, \
 564                           get_asn1, ctrl)
 565
 566 #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
 567         BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
 568         BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
 569                              NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
 570                              (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
 571                              cipher##_init_key, NULL, NULL, NULL, NULL)
 572
 573 typedef struct {
 574     unsigned char iv[EVP_MAX_IV_LENGTH];
 575     unsigned int iv_len;
 576     unsigned int tag_len;
 577 } evp_cipher_aead_asn1_params;
 578
 579 int evp_cipher_param_to_asn1_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
 580                                 evp_cipher_aead_asn1_params *params);
 581
 582 int evp_cipher_asn1_to_param_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
 583                                 evp_cipher_aead_asn1_params *params);
 584
 585 /*
 586  * To support transparent execution of operation in backends other
 587  * than the "origin" key, we support transparent export/import to
 588  * those providers, and maintain a cache of the imported keydata,
 589  * so we don't need to redo the export/import every time we perform
 590  * the same operation in that same provider.
 591  * This requires that the "origin" backend (whether it's a legacy or a
 592  * provider "origin") implements exports, and that the target provider
 593  * has an EVP_KEYMGMT that implements import.
 594  */
 595 typedef struct {
 596     EVP_KEYMGMT *keymgmt;
 597     void *keydata;
 598     int selection;
 599 } OP_CACHE_ELEM;
 600
 601 DEFINE_STACK_OF(OP_CACHE_ELEM)
 602
 603 /*
 604  * An EVP_PKEY can have the following states:
 605  *
 606  * untyped & empty:
 607  *
 608  *     type == EVP_PKEY_NONE && keymgmt == NULL
 609  *
 610  * typed & empty:
 611  *
 612  *     (type != EVP_PKEY_NONE && pkey.ptr == NULL)      ## legacy (libcrypto only)
 613  *     || (keymgmt != NULL && keydata == NULL)          ## provider side
 614  *
 615  * fully assigned:
 616  *
 617  *     (type != EVP_PKEY_NONE && pkey.ptr != NULL)      ## legacy (libcrypto only)
 618  *     || (keymgmt != NULL && keydata != NULL)          ## provider side
 619  *
 620  * The easiest way to detect a legacy key is:
 621  *
 622  *     keymgmt == NULL && type != EVP_PKEY_NONE
 623  *
 624  * The easiest way to detect a provider side key is:
 625  *
 626  *     keymgmt != NULL
 627  */
 628 #define evp_pkey_is_blank(pk)                                   \
 629     ((pk)->type == EVP_PKEY_NONE && (pk)->keymgmt == NULL)
 630 #define evp_pkey_is_typed(pk)                                   \
 631     ((pk)->type != EVP_PKEY_NONE || (pk)->keymgmt != NULL)
 632 #ifndef FIPS_MODULE
 633 # define evp_pkey_is_assigned(pk)                               \
 634     ((pk)->pkey.ptr != NULL || (pk)->keydata != NULL)
 635 #else
 636 # define evp_pkey_is_assigned(pk)                               \
 637     ((pk)->keydata != NULL)
 638 #endif
 639 #define evp_pkey_is_legacy(pk)                                  \
 640     ((pk)->type != EVP_PKEY_NONE && (pk)->keymgmt == NULL)
 641 #define evp_pkey_is_provided(pk)                                \
 642     ((pk)->keymgmt != NULL)
 643
 644 union legacy_pkey_st {
 645     void *ptr;
 646     struct rsa_st *rsa;     /* RSA */
 647 #  ifndef OPENSSL_NO_DSA
 648     struct dsa_st *dsa;     /* DSA */
 649 #  endif
 650 #  ifndef OPENSSL_NO_DH
 651     struct dh_st *dh;       /* DH */
 652 #  endif
 653 #  ifndef OPENSSL_NO_EC
 654     struct ec_key_st *ec;   /* ECC */
 655 #   ifndef OPENSSL_NO_ECX
 656     ECX_KEY *ecx;           /* X25519, X448, Ed25519, Ed448 */
 657 #   endif
 658 #  endif
 659 };
 660
 661 struct evp_pkey_st {
 662     /* == Legacy attributes == */
 663     int type;
 664     int save_type;
 665
 666 # ifndef FIPS_MODULE
 667     /*
 668      * Legacy key "origin" is composed of a pointer to an EVP_PKEY_ASN1_METHOD,
 669      * a pointer to a low level key and possibly a pointer to an engine.
 670      */
 671     const EVP_PKEY_ASN1_METHOD *ameth;
 672     ENGINE *engine;
 673     ENGINE *pmeth_engine; /* If not NULL public key ENGINE to use */
 674
 675     /* Union to store the reference to an origin legacy key */
 676     union legacy_pkey_st pkey;
 677
 678     /* Union to store the reference to a non-origin legacy key */
 679     union legacy_pkey_st legacy_cache_pkey;
 680 # endif
 681
 682     /* == Common attributes == */
 683     CRYPTO_REF_COUNT references;
 684     CRYPTO_RWLOCK *lock;
 685 #ifndef FIPS_MODULE
 686     STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
 687     int save_parameters;
 688     unsigned int foreign:1; /* the low-level key is using an engine or an app-method */
 689     CRYPTO_EX_DATA ex_data;
 690 #endif
 691
 692     /* == Provider attributes == */
 693
 694     /*
 695      * Provider keydata "origin" is composed of a pointer to an EVP_KEYMGMT
 696      * and a pointer to the provider side key data.  This is never used at
 697      * the same time as the legacy key data above.
 698      */
 699     EVP_KEYMGMT *keymgmt;
 700     void *keydata;
 701     /*
 702      * If any libcrypto code does anything that may modify the keydata
 703      * contents, this dirty counter must be incremented.
 704      */
 705     size_t dirty_cnt;
 706
 707     /*
 708      * To support transparent execution of operation in backends other
 709      * than the "origin" key, we support transparent export/import to
 710      * those providers, and maintain a cache of the imported keydata,
 711      * so we don't need to redo the export/import every time we perform
 712      * the same operation in that same provider.
 713      */
 714     STACK_OF(OP_CACHE_ELEM) *operation_cache;
 715
 716     /*
 717      * We keep a copy of that "origin"'s dirty count, so we know if the
 718      * operation cache needs flushing.
 719      */
 720     size_t dirty_cnt_copy;
 721
 722     /* Cache of key object information */
 723     struct {
 724         int bits;
 725         int security_bits;
 726         int size;
 727     } cache;
 728 } /* EVP_PKEY */ ;
 729
 730 #define EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) \
 731     ((ctx)->operation == EVP_PKEY_OP_SIGN \
 732      || (ctx)->operation == EVP_PKEY_OP_SIGNCTX \
 733      || (ctx)->operation == EVP_PKEY_OP_VERIFY \
 734      || (ctx)->operation == EVP_PKEY_OP_VERIFYCTX \
 735      || (ctx)->operation == EVP_PKEY_OP_VERIFYRECOVER)
 736
 737 #define EVP_PKEY_CTX_IS_DERIVE_OP(ctx) \
 738     ((ctx)->operation == EVP_PKEY_OP_DERIVE)
 739
 740 #define EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) \
 741     ((ctx)->operation == EVP_PKEY_OP_ENCRYPT \
 742      || (ctx)->operation == EVP_PKEY_OP_DECRYPT)
 743
 744 #define EVP_PKEY_CTX_IS_GEN_OP(ctx) \
 745     ((ctx)->operation == EVP_PKEY_OP_PARAMGEN \
 746      || (ctx)->operation == EVP_PKEY_OP_KEYGEN)
 747
 748 #define EVP_PKEY_CTX_IS_FROMDATA_OP(ctx) \
 749     ((ctx)->operation == EVP_PKEY_OP_FROMDATA)
 750
 751 #define EVP_PKEY_CTX_IS_KEM_OP(ctx) \
 752     ((ctx)->operation == EVP_PKEY_OP_ENCAPSULATE \
 753      || (ctx)->operation == EVP_PKEY_OP_DECAPSULATE)
 754
 755 void openssl_add_all_ciphers_int(void);
 756 void openssl_add_all_digests_int(void);
 757 void evp_cleanup_int(void);
 758 void evp_app_cleanup_int(void);
 759 void *evp_pkey_export_to_provider(EVP_PKEY *pk, OSSL_LIB_CTX *libctx,
 760                                   EVP_KEYMGMT **keymgmt,
 761                                   const char *propquery);
 762 #ifndef FIPS_MODULE
 763 int evp_pkey_copy_downgraded(EVP_PKEY **dest, const EVP_PKEY *src);
 764 void *evp_pkey_get_legacy(EVP_PKEY *pk);
 765 void evp_pkey_free_legacy(EVP_PKEY *x);
 766 EVP_PKEY *evp_pkcs82pkey_legacy(const PKCS8_PRIV_KEY_INFO *p8inf,
 767                                 OSSL_LIB_CTX *libctx, const char *propq);
 768 #endif
 769
 770 /*
 771  * KEYMGMT utility functions
 772  */
 773
 774 /*
 775  * Key import structure and helper function, to be used as an export callback
 776  */
 777 struct evp_keymgmt_util_try_import_data_st {
 778     EVP_KEYMGMT *keymgmt;
 779     void *keydata;
 780
 781     int selection;
 782 };
 783 int evp_keymgmt_util_try_import(const OSSL_PARAM params[], void *arg);
 784 int evp_keymgmt_util_assign_pkey(EVP_PKEY *pkey, EVP_KEYMGMT *keymgmt,
 785                                  void *keydata);
 786 EVP_PKEY *evp_keymgmt_util_make_pkey(EVP_KEYMGMT *keymgmt, void *keydata);
 787
 788 int evp_keymgmt_util_export(const EVP_PKEY *pk, int selection,
 789                             OSSL_CALLBACK *export_cb, void *export_cbarg);
 790 void *evp_keymgmt_util_export_to_provider(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt,
 791                                           int selection);
 792 OP_CACHE_ELEM *evp_keymgmt_util_find_operation_cache(EVP_PKEY *pk,
 793                                                      EVP_KEYMGMT *keymgmt,
 794                                                      int selection);
 795 int evp_keymgmt_util_clear_operation_cache(EVP_PKEY *pk);
 796 int evp_keymgmt_util_cache_keydata(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt,
 797                                    void *keydata, int selection);
 798 void evp_keymgmt_util_cache_keyinfo(EVP_PKEY *pk);
 799 void *evp_keymgmt_util_fromdata(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
 800                                 int selection, const OSSL_PARAM params[]);
 801 int evp_keymgmt_util_has(EVP_PKEY *pk, int selection);
 802 int evp_keymgmt_util_match(EVP_PKEY *pk1, EVP_PKEY *pk2, int selection);
 803 int evp_keymgmt_util_copy(EVP_PKEY *to, EVP_PKEY *from, int selection);
 804 void *evp_keymgmt_util_gen(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
 805                            void *genctx, OSSL_CALLBACK *cb, void *cbarg);
 806 int evp_keymgmt_util_get_deflt_digest_name(EVP_KEYMGMT *keymgmt,
 807                                            void *keydata,
 808                                            char *mdname, size_t mdname_sz);
 809 const char *evp_keymgmt_util_query_operation_name(EVP_KEYMGMT *keymgmt,
 810                                                   int op_id);
 811
 812 /*
 813  * KEYMGMT provider interface functions
 814  */
 815 void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt);
 816 void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keyddata);
 817 int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt,
 818                            void *keydata, OSSL_PARAM params[]);
 819 int evp_keymgmt_set_params(const EVP_KEYMGMT *keymgmt,
 820                            void *keydata, const OSSL_PARAM params[]);
 821 void *evp_keymgmt_gen_init(const EVP_KEYMGMT *keymgmt, int selection,
 822                            const OSSL_PARAM params[]);
 823 int evp_keymgmt_gen_set_template(const EVP_KEYMGMT *keymgmt, void *genctx,
 824                                  void *templ);
 825 int evp_keymgmt_gen_set_params(const EVP_KEYMGMT *keymgmt, void *genctx,
 826                                const OSSL_PARAM params[]);
 827 void *evp_keymgmt_gen(const EVP_KEYMGMT *keymgmt, void *genctx,
 828                       OSSL_CALLBACK *cb, void *cbarg);
 829 void evp_keymgmt_gen_cleanup(const EVP_KEYMGMT *keymgmt, void *genctx);
 830
 831 int evp_keymgmt_has_load(const EVP_KEYMGMT *keymgmt);
 832 void *evp_keymgmt_load(const EVP_KEYMGMT *keymgmt,
 833                        const void *objref, size_t objref_sz);
 834
 835 int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keyddata, int selection);
 836 int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
 837                          int selection, int checktype);
 838 int evp_keymgmt_match(const EVP_KEYMGMT *keymgmt,
 839                       const void *keydata1, const void *keydata2,
 840                       int selection);
 841
 842 int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
 843                        int selection, const OSSL_PARAM params[]);
 844 const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
 845                                            int selection);
 846 int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
 847                        int selection, OSSL_CALLBACK *param_cb, void *cbarg);
 848 const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
 849                                            int selection);
 850 void *evp_keymgmt_dup(const EVP_KEYMGMT *keymgmt,
 851                       const void *keydata_from, int selection);
 852 EVP_KEYMGMT *evp_keymgmt_fetch_from_prov(OSSL_PROVIDER *prov,
 853                                          const char *name,
 854                                          const char *properties);
 855
 856 /* Pulling defines out of C source files */
 857
 858 # define EVP_RC4_KEY_SIZE 16
 859 # ifndef TLS1_1_VERSION
 860 #  define TLS1_1_VERSION   0x0302
 861 # endif
 862
 863 void evp_encode_ctx_set_flags(EVP_ENCODE_CTX *ctx, unsigned int flags);
 864
 865 /* EVP_ENCODE_CTX flags */
 866 /* Don't generate new lines when encoding */
 867 #define EVP_ENCODE_CTX_NO_NEWLINES          1
 868 /* Use the SRP base64 alphabet instead of the standard one */
 869 #define EVP_ENCODE_CTX_USE_SRP_ALPHABET     2
 870
 871 const EVP_CIPHER *evp_get_cipherbyname_ex(OSSL_LIB_CTX *libctx,
 872                                           const char *name);
 873 const EVP_MD *evp_get_digestbyname_ex(OSSL_LIB_CTX *libctx,
 874                                       const char *name);
 875
 876 int ossl_pkcs5_pbkdf2_hmac_ex(const char *pass, int passlen,
 877                               const unsigned char *salt, int saltlen, int iter,
 878                               const EVP_MD *digest, int keylen,
 879                               unsigned char *out,
 880                               OSSL_LIB_CTX *libctx, const char *propq);
 881
 882 # ifndef FIPS_MODULE
 883 /*
 884  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 885  *
 886  * Return 1 on success, 0 or negative for errors.
 887  *
 888  * In particular they return -2 if any of the params is not supported.
 889  *
 890  * They are not available in FIPS_MODULE as they depend on
 891  *      - EVP_PKEY_CTX_{get,set}_params()
 892  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 893  *
 894  */
 895 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
 896 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
 897
 898 EVP_MD_CTX *evp_md_ctx_new_ex(EVP_PKEY *pkey, const ASN1_OCTET_STRING *id,
 899                               OSSL_LIB_CTX *libctx, const char *propq);
 900 int evp_pkey_name2type(const char *name);
 901 const char *evp_pkey_type2name(int type);
 902
 903 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx);
 904 # endif /* !defined(FIPS_MODULE) */
 905
 906 int evp_method_store_cache_flush(OSSL_LIB_CTX *libctx);
 907 int evp_method_store_remove_all_provided(const OSSL_PROVIDER *prov);
 908
 909 int evp_default_properties_enable_fips_int(OSSL_LIB_CTX *libctx, int enable,
 910                                            int loadconfig);
 911 int evp_set_default_properties_int(OSSL_LIB_CTX *libctx, const char *propq,
 912                                    int loadconfig, int mirrored);
 913 char *evp_get_global_properties_str(OSSL_LIB_CTX *libctx, int loadconfig);
 914
 915 void evp_md_ctx_clear_digest(EVP_MD_CTX *ctx, int force, int keep_digest);
 916 /* just free the algctx if set, returns 0 on inconsistent state of ctx */
 917 int evp_md_ctx_free_algctx(EVP_MD_CTX *ctx);
 918
 919 /* Three possible states: */
 920 # define EVP_PKEY_STATE_UNKNOWN         0
 921 # define EVP_PKEY_STATE_LEGACY          1
 922 # define EVP_PKEY_STATE_PROVIDER        2
 923 int evp_pkey_ctx_state(const EVP_PKEY_CTX *ctx);
 924
 925 /* These two must ONLY be called for provider side operations */
 926 int evp_pkey_ctx_ctrl_to_param(EVP_PKEY_CTX *ctx,
 927                                int keytype, int optype,
 928                                int cmd, int p1, void *p2);
 929 int evp_pkey_ctx_ctrl_str_to_param(EVP_PKEY_CTX *ctx,
 930                                    const char *name, const char *value);
 931
 932 /* These two must ONLY be called for legacy operations */
 933 int evp_pkey_ctx_set_params_to_ctrl(EVP_PKEY_CTX *ctx, const OSSL_PARAM *params);
 934 int evp_pkey_ctx_get_params_to_ctrl(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
 935
 936 /* This must ONLY be called for legacy EVP_PKEYs */
 937 int evp_pkey_get_params_to_ctrl(const EVP_PKEY *pkey, OSSL_PARAM *params);
 938
 939 /* Same as the public get0 functions but are not const */
 940 # ifndef OPENSSL_NO_DEPRECATED_3_0
 941 DH *evp_pkey_get0_DH_int(const EVP_PKEY *pkey);
 942 EC_KEY *evp_pkey_get0_EC_KEY_int(const EVP_PKEY *pkey);
 943 RSA *evp_pkey_get0_RSA_int(const EVP_PKEY *pkey);
 944 # endif
 945
 946 /* Get internal identification number routines */
 947 int evp_asym_cipher_get_number(const EVP_ASYM_CIPHER *cipher);
 948 int evp_cipher_get_number(const EVP_CIPHER *cipher);
 949 int evp_kdf_get_number(const EVP_KDF *kdf);
 950 int evp_kem_get_number(const EVP_KEM *wrap);
 951 int evp_keyexch_get_number(const EVP_KEYEXCH *keyexch);
 952 int evp_keymgmt_get_number(const EVP_KEYMGMT *keymgmt);
 953 int evp_mac_get_number(const EVP_MAC *mac);
 954 int evp_md_get_number(const EVP_MD *md);
 955 int evp_rand_get_number(const EVP_RAND *rand);
 956 int evp_signature_get_number(const EVP_SIGNATURE *signature);
 957
 958 int evp_pkey_decrypt_alloc(EVP_PKEY_CTX *ctx, unsigned char **outp,
 959                            size_t *outlenp, size_t expected_outlen,
 960                            const unsigned char *in, size_t inlen);
 961
 962 #endif /* OSSL_CRYPTO_EVP_H */