include/crypto/evp.h

   1 /*
   2  * Copyright 2015-2021 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  * Don't free up md_ctx->pctx in EVP_MD_CTX_reset, use the reserved flag
  21  * values in evp.h
  22  */
  23 #define EVP_MD_CTX_FLAG_KEEP_PKEY_CTX   0x0400
  24
  25 #define evp_pkey_ctx_is_legacy(ctx)                             \
  26     ((ctx)->keymgmt == NULL)
  27 #define evp_pkey_ctx_is_provided(ctx)                           \
  28     (!evp_pkey_ctx_is_legacy(ctx))
  29
  30 struct evp_pkey_ctx_st {
  31     /* Actual operation */
  32     int operation;
  33
  34     /*
  35      * Library context, property query, keytype and keymgmt associated with
  36      * this context
  37      */
  38     OSSL_LIB_CTX *libctx;
  39     char *propquery;
  40     const char *keytype;
  41     EVP_KEYMGMT *keymgmt;
  42
  43     union {
  44         struct {
  45             void *genctx;
  46         } keymgmt;
  47
  48         struct {
  49             EVP_KEYEXCH *exchange;
  50             /*
  51              * Opaque ctx returned from a providers exchange algorithm
  52              * implementation OSSL_FUNC_keyexch_newctx()
  53              */
  54             void *algctx;
  55         } kex;
  56
  57         struct {
  58             EVP_SIGNATURE *signature;
  59             /*
  60              * Opaque ctx returned from a providers signature algorithm
  61              * implementation OSSL_FUNC_signature_newctx()
  62              */
  63             void *algctx;
  64         } sig;
  65
  66         struct {
  67             EVP_ASYM_CIPHER *cipher;
  68             /*
  69              * Opaque ctx returned from a providers asymmetric cipher algorithm
  70              * implementation OSSL_FUNC_asym_cipher_newctx()
  71              */
  72             void *algctx;
  73         } ciph;
  74         struct {
  75             EVP_KEM *kem;
  76             /*
  77              * Opaque ctx returned from a providers KEM algorithm
  78              * implementation OSSL_FUNC_kem_newctx()
  79              */
  80             void *algctx;
  81         } encap;
  82     } op;
  83
  84     /*
  85      * Cached parameters.  Inits of operations that depend on these should
  86      * call evp_pkey_ctx_use_delayed_data() when the operation has been set
  87      * up properly.
  88      */
  89     struct {
  90         /* Distinguishing Identifier, ISO/IEC 15946-3, FIPS 196 */
  91         char *dist_id_name; /* The name used with EVP_PKEY_CTX_ctrl_str() */
  92         void *dist_id;      /* The distinguishing ID itself */
  93         size_t dist_id_len; /* The length of the distinguishing ID */
  94
  95         /* Indicators of what has been set.  Keep them together! */
  96         unsigned int dist_id_set : 1;
  97     } cached_parameters;
  98
  99     /* Application specific data, usually used by the callback */
 100     void *app_data;
 101     /* Keygen callback */
 102     EVP_PKEY_gen_cb *pkey_gencb;
 103     /* implementation specific keygen data */
 104     int *keygen_info;
 105     int keygen_info_count;
 106
 107     /* Legacy fields below */
 108
 109     /* EVP_PKEY identity */
 110     int legacy_keytype;
 111     /* Method associated with this operation */
 112     const EVP_PKEY_METHOD *pmeth;
 113     /* Engine that implements this method or NULL if builtin */
 114     ENGINE *engine;
 115     /* Key: may be NULL */
 116     EVP_PKEY *pkey;
 117     /* Peer key for key agreement, may be NULL */
 118     EVP_PKEY *peerkey;
 119     /* Algorithm specific data */
 120     void *data;
 121     /* Indicator if digest_custom needs to be called */
 122     unsigned int flag_call_digest_custom:1;
 123     /*
 124      * Used to support taking custody of memory in the case of a provider being
 125      * used with the deprecated EVP_PKEY_CTX_set_rsa_keygen_pubexp() API. This
 126      * member should NOT be used for any other purpose and should be removed
 127      * when said deprecated API is excised completely.
 128      */
 129     BIGNUM *rsa_pubexp;
 130 } /* EVP_PKEY_CTX */ ;
 131
 132 #define EVP_PKEY_FLAG_DYNAMIC   1
 133
 134 struct evp_pkey_method_st {
 135     int pkey_id;
 136     int flags;
 137     int (*init) (EVP_PKEY_CTX *ctx);
 138     int (*copy) (EVP_PKEY_CTX *dst, const EVP_PKEY_CTX *src);
 139     void (*cleanup) (EVP_PKEY_CTX *ctx);
 140     int (*paramgen_init) (EVP_PKEY_CTX *ctx);
 141     int (*paramgen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
 142     int (*keygen_init) (EVP_PKEY_CTX *ctx);
 143     int (*keygen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
 144     int (*sign_init) (EVP_PKEY_CTX *ctx);
 145     int (*sign) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
 146                  const unsigned char *tbs, size_t tbslen);
 147     int (*verify_init) (EVP_PKEY_CTX *ctx);
 148     int (*verify) (EVP_PKEY_CTX *ctx,
 149                    const unsigned char *sig, size_t siglen,
 150                    const unsigned char *tbs, size_t tbslen);
 151     int (*verify_recover_init) (EVP_PKEY_CTX *ctx);
 152     int (*verify_recover) (EVP_PKEY_CTX *ctx,
 153                            unsigned char *rout, size_t *routlen,
 154                            const unsigned char *sig, size_t siglen);
 155     int (*signctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
 156     int (*signctx) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
 157                     EVP_MD_CTX *mctx);
 158     int (*verifyctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
 159     int (*verifyctx) (EVP_PKEY_CTX *ctx, const unsigned char *sig, int siglen,
 160                       EVP_MD_CTX *mctx);
 161     int (*encrypt_init) (EVP_PKEY_CTX *ctx);
 162     int (*encrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
 163                     const unsigned char *in, size_t inlen);
 164     int (*decrypt_init) (EVP_PKEY_CTX *ctx);
 165     int (*decrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
 166                     const unsigned char *in, size_t inlen);
 167     int (*derive_init) (EVP_PKEY_CTX *ctx);
 168     int (*derive) (EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
 169     int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
 170     int (*ctrl_str) (EVP_PKEY_CTX *ctx, const char *type, const char *value);
 171     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
 172                        const unsigned char *tbs, size_t tbslen);
 173     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
 174                          size_t siglen, const unsigned char *tbs,
 175                          size_t tbslen);
 176     int (*check) (EVP_PKEY *pkey);
 177     int (*public_check) (EVP_PKEY *pkey);
 178     int (*param_check) (EVP_PKEY *pkey);
 179
 180     int (*digest_custom) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
 181 } /* EVP_PKEY_METHOD */ ;
 182
 183 DEFINE_STACK_OF_CONST(EVP_PKEY_METHOD)
 184
 185 void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx);
 186
 187 const EVP_PKEY_METHOD *ossl_dh_pkey_method(void);
 188 const EVP_PKEY_METHOD *ossl_dhx_pkey_method(void);
 189 const EVP_PKEY_METHOD *ossl_dsa_pkey_method(void);
 190 const EVP_PKEY_METHOD *ossl_ec_pkey_method(void);
 191 const EVP_PKEY_METHOD *ossl_ecx25519_pkey_method(void);
 192 const EVP_PKEY_METHOD *ossl_ecx448_pkey_method(void);
 193 const EVP_PKEY_METHOD *ossl_ed25519_pkey_method(void);
 194 const EVP_PKEY_METHOD *ossl_ed448_pkey_method(void);
 195 const EVP_PKEY_METHOD *ossl_rsa_pkey_method(void);
 196 const EVP_PKEY_METHOD *ossl_rsa_pss_pkey_method(void);
 197
 198 struct evp_mac_st {
 199     OSSL_PROVIDER *prov;
 200     int name_id;
 201     char *type_name;
 202     const char *description;
 203
 204     CRYPTO_REF_COUNT refcnt;
 205     CRYPTO_RWLOCK *lock;
 206
 207     OSSL_FUNC_mac_newctx_fn *newctx;
 208     OSSL_FUNC_mac_dupctx_fn *dupctx;
 209     OSSL_FUNC_mac_freectx_fn *freectx;
 210     OSSL_FUNC_mac_init_fn *init;
 211     OSSL_FUNC_mac_update_fn *update;
 212     OSSL_FUNC_mac_final_fn *final;
 213     OSSL_FUNC_mac_gettable_params_fn *gettable_params;
 214     OSSL_FUNC_mac_gettable_ctx_params_fn *gettable_ctx_params;
 215     OSSL_FUNC_mac_settable_ctx_params_fn *settable_ctx_params;
 216     OSSL_FUNC_mac_get_params_fn *get_params;
 217     OSSL_FUNC_mac_get_ctx_params_fn *get_ctx_params;
 218     OSSL_FUNC_mac_set_ctx_params_fn *set_ctx_params;
 219 };
 220
 221 struct evp_kdf_st {
 222     OSSL_PROVIDER *prov;
 223     int name_id;
 224     char *type_name;
 225     const char *description;
 226     CRYPTO_REF_COUNT refcnt;
 227     CRYPTO_RWLOCK *lock;
 228
 229     OSSL_FUNC_kdf_newctx_fn *newctx;
 230     OSSL_FUNC_kdf_dupctx_fn *dupctx;
 231     OSSL_FUNC_kdf_freectx_fn *freectx;
 232     OSSL_FUNC_kdf_reset_fn *reset;
 233     OSSL_FUNC_kdf_derive_fn *derive;
 234     OSSL_FUNC_kdf_gettable_params_fn *gettable_params;
 235     OSSL_FUNC_kdf_gettable_ctx_params_fn *gettable_ctx_params;
 236     OSSL_FUNC_kdf_settable_ctx_params_fn *settable_ctx_params;
 237     OSSL_FUNC_kdf_get_params_fn *get_params;
 238     OSSL_FUNC_kdf_get_ctx_params_fn *get_ctx_params;
 239     OSSL_FUNC_kdf_set_ctx_params_fn *set_ctx_params;
 240 };
 241
 242 #define EVP_ORIG_DYNAMIC    0
 243 #define EVP_ORIG_GLOBAL     1
 244 #define EVP_ORIG_METH       2
 245
 246 struct evp_md_st {
 247     /* nid */
 248     int type;
 249
 250     /* Legacy structure members */
 251     int pkey_type;
 252     int md_size;
 253     unsigned long flags;
 254     int origin;
 255     int (*init) (EVP_MD_CTX *ctx);
 256     int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
 257     int (*final) (EVP_MD_CTX *ctx, unsigned char *md);
 258     int (*copy) (EVP_MD_CTX *to, const EVP_MD_CTX *from);
 259     int (*cleanup) (EVP_MD_CTX *ctx);
 260     int block_size;
 261     int ctx_size;               /* how big does the ctx->md_data need to be */
 262     /* control function */
 263     int (*md_ctrl) (EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
 264
 265     /* New structure members */
 266     /* Above comment to be removed when legacy has gone */
 267     int name_id;
 268     char *type_name;
 269     const char *description;
 270     OSSL_PROVIDER *prov;
 271     CRYPTO_REF_COUNT refcnt;
 272     CRYPTO_RWLOCK *lock;
 273     OSSL_FUNC_digest_newctx_fn *newctx;
 274     OSSL_FUNC_digest_init_fn *dinit;
 275     OSSL_FUNC_digest_update_fn *dupdate;
 276     OSSL_FUNC_digest_final_fn *dfinal;
 277     OSSL_FUNC_digest_digest_fn *digest;
 278     OSSL_FUNC_digest_freectx_fn *freectx;
 279     OSSL_FUNC_digest_dupctx_fn *dupctx;
 280     OSSL_FUNC_digest_get_params_fn *get_params;
 281     OSSL_FUNC_digest_set_ctx_params_fn *set_ctx_params;
 282     OSSL_FUNC_digest_get_ctx_params_fn *get_ctx_params;
 283     OSSL_FUNC_digest_gettable_params_fn *gettable_params;
 284     OSSL_FUNC_digest_settable_ctx_params_fn *settable_ctx_params;
 285     OSSL_FUNC_digest_gettable_ctx_params_fn *gettable_ctx_params;
 286
 287 } /* EVP_MD */ ;
 288
 289 struct evp_cipher_st {
 290     int nid;
 291
 292     int block_size;
 293     /* Default value for variable length ciphers */
 294     int key_len;
 295     int iv_len;
 296
 297     /* Legacy structure members */
 298     /* Various flags */
 299     unsigned long flags;
 300     /* How the EVP_CIPHER was created. */
 301     int origin;
 302     /* init key */
 303     int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
 304                  const unsigned char *iv, int enc);
 305     /* encrypt/decrypt data */
 306     int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out,
 307                       const unsigned char *in, size_t inl);
 308     /* cleanup ctx */
 309     int (*cleanup) (EVP_CIPHER_CTX *);
 310     /* how big ctx->cipher_data needs to be */
 311     int ctx_size;
 312     /* Populate a ASN1_TYPE with parameters */
 313     int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
 314     /* Get parameters from a ASN1_TYPE */
 315     int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
 316     /* Miscellaneous operations */
 317     int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr);
 318     /* Application data */
 319     void *app_data;
 320
 321     /* New structure members */
 322     /* Above comment to be removed when legacy has gone */
 323     int name_id;
 324     char *type_name;
 325     const char *description;
 326     OSSL_PROVIDER *prov;
 327     CRYPTO_REF_COUNT refcnt;
 328     CRYPTO_RWLOCK *lock;
 329     OSSL_FUNC_cipher_newctx_fn *newctx;
 330     OSSL_FUNC_cipher_encrypt_init_fn *einit;
 331     OSSL_FUNC_cipher_decrypt_init_fn *dinit;
 332     OSSL_FUNC_cipher_update_fn *cupdate;
 333     OSSL_FUNC_cipher_final_fn *cfinal;
 334     OSSL_FUNC_cipher_cipher_fn *ccipher;
 335     OSSL_FUNC_cipher_freectx_fn *freectx;
 336     OSSL_FUNC_cipher_dupctx_fn *dupctx;
 337     OSSL_FUNC_cipher_get_params_fn *get_params;
 338     OSSL_FUNC_cipher_get_ctx_params_fn *get_ctx_params;
 339     OSSL_FUNC_cipher_set_ctx_params_fn *set_ctx_params;
 340     OSSL_FUNC_cipher_gettable_params_fn *gettable_params;
 341     OSSL_FUNC_cipher_gettable_ctx_params_fn *gettable_ctx_params;
 342     OSSL_FUNC_cipher_settable_ctx_params_fn *settable_ctx_params;
 343 } /* EVP_CIPHER */ ;
 344
 345 /* Macros to code block cipher wrappers */
 346
 347 /* Wrapper functions for each cipher mode */
 348
 349 #define EVP_C_DATA(kstruct, ctx) \
 350         ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx))
 351
 352 #define BLOCK_CIPHER_ecb_loop() \
 353         size_t i, bl; \
 354         bl = EVP_CIPHER_CTX_get0_cipher(ctx)->block_size;    \
 355         if (inl < bl) return 1;\
 356         inl -= bl; \
 357         for (i=0; i <= inl; i+=bl)
 358
 359 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
 360 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 361 {\
 362         BLOCK_CIPHER_ecb_loop() \
 363             cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_is_encrypting(ctx)); \
 364         return 1;\
 365 }
 366
 367 #define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2))
 368
 369 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
 370     static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 371 {\
 372         while(inl>=EVP_MAXCHUNK) {\
 373             int num = EVP_CIPHER_CTX_get_num(ctx);\
 374             cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, &num); \
 375             EVP_CIPHER_CTX_set_num(ctx, num);\
 376             inl-=EVP_MAXCHUNK;\
 377             in +=EVP_MAXCHUNK;\
 378             out+=EVP_MAXCHUNK;\
 379         }\
 380         if (inl) {\
 381             int num = EVP_CIPHER_CTX_get_num(ctx);\
 382             cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, &num); \
 383             EVP_CIPHER_CTX_set_num(ctx, num);\
 384         }\
 385         return 1;\
 386 }
 387
 388 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
 389 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 390 {\
 391         while(inl>=EVP_MAXCHUNK) \
 392             {\
 393             cprefix##_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, EVP_CIPHER_CTX_is_encrypting(ctx));\
 394             inl-=EVP_MAXCHUNK;\
 395             in +=EVP_MAXCHUNK;\
 396             out+=EVP_MAXCHUNK;\
 397             }\
 398         if (inl)\
 399             cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, ctx->iv, EVP_CIPHER_CTX_is_encrypting(ctx));\
 400         return 1;\
 401 }
 402
 403 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched)  \
 404 static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 405 {\
 406     size_t chunk = EVP_MAXCHUNK;\
 407     if (cbits == 1)  chunk >>= 3;\
 408     if (inl < chunk) chunk = inl;\
 409     while (inl && inl >= chunk)\
 410     {\
 411         int num = EVP_CIPHER_CTX_get_num(ctx);\
 412         cprefix##_cfb##cbits##_encrypt(in, out, (long) \
 413             ((cbits == 1) \
 414                 && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \
 415                 ? chunk*8 : chunk), \
 416             &EVP_C_DATA(kstruct, ctx)->ksched, ctx->iv,\
 417             &num, EVP_CIPHER_CTX_is_encrypting(ctx));\
 418         EVP_CIPHER_CTX_set_num(ctx, num);\
 419         inl -= chunk;\
 420         in += chunk;\
 421         out += chunk;\
 422         if (inl < chunk) chunk = inl;\
 423     }\
 424     return 1;\
 425 }
 426
 427 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 428         BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
 429         BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
 430         BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
 431         BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
 432
 433 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
 434                           key_len, iv_len, flags, init_key, cleanup, \
 435                           set_asn1, get_asn1, ctrl) \
 436 static const EVP_CIPHER cname##_##mode = { \
 437         nid##_##nmode, block_size, key_len, iv_len, \
 438         flags | EVP_CIPH_##MODE##_MODE, \
 439         EVP_ORIG_GLOBAL, \
 440         init_key, \
 441         cname##_##mode##_cipher, \
 442         cleanup, \
 443         sizeof(kstruct), \
 444         set_asn1, get_asn1,\
 445         ctrl, \
 446         NULL \
 447 }; \
 448 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
 449
 450 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
 451                              iv_len, flags, init_key, cleanup, set_asn1, \
 452                              get_asn1, ctrl) \
 453 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
 454                   iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 455
 456 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
 457                              iv_len, cbits, flags, init_key, cleanup, \
 458                              set_asn1, get_asn1, ctrl) \
 459 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
 460                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 461                   get_asn1, ctrl)
 462
 463 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
 464                              iv_len, cbits, flags, init_key, cleanup, \
 465                              set_asn1, get_asn1, ctrl) \
 466 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
 467                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 468                   get_asn1, ctrl)
 469
 470 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
 471                              flags, init_key, cleanup, set_asn1, \
 472                              get_asn1, ctrl) \
 473 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
 474                   0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 475
 476 #define BLOCK_CIPHER_defs(cname, kstruct, \
 477                           nid, block_size, key_len, iv_len, cbits, flags, \
 478                           init_key, cleanup, set_asn1, get_asn1, ctrl) \
 479 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
 480                      init_key, cleanup, set_asn1, get_asn1, ctrl) \
 481 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
 482                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 483 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
 484                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 485 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
 486                      init_key, cleanup, set_asn1, get_asn1, ctrl)
 487
 488 /*-
 489 #define BLOCK_CIPHER_defs(cname, kstruct, \
 490                                 nid, block_size, key_len, iv_len, flags,\
 491                                  init_key, cleanup, set_asn1, get_asn1, ctrl)\
 492 static const EVP_CIPHER cname##_cbc = {\
 493         nid##_cbc, block_size, key_len, iv_len, \
 494         flags | EVP_CIPH_CBC_MODE,\
 495         EVP_ORIG_GLOBAL,\
 496         init_key,\
 497         cname##_cbc_cipher,\
 498         cleanup,\
 499         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 500                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 501         set_asn1, get_asn1,\
 502         ctrl, \
 503         NULL \
 504 };\
 505 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
 506 static const EVP_CIPHER cname##_cfb = {\
 507         nid##_cfb64, 1, key_len, iv_len, \
 508         flags | EVP_CIPH_CFB_MODE,\
 509         EVP_ORIG_GLOBAL,\
 510         init_key,\
 511         cname##_cfb_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##_cfb(void) { return &cname##_cfb; }\
 520 static const EVP_CIPHER cname##_ofb = {\
 521         nid##_ofb64, 1, key_len, iv_len, \
 522         flags | EVP_CIPH_OFB_MODE,\
 523         EVP_ORIG_GLOBAL,\
 524         init_key,\
 525         cname##_ofb_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##_ofb(void) { return &cname##_ofb; }\
 534 static const EVP_CIPHER cname##_ecb = {\
 535         nid##_ecb, block_size, key_len, iv_len, \
 536         flags | EVP_CIPH_ECB_MODE,\
 537         EVP_ORIG_GLOBAL,\
 538         init_key,\
 539         cname##_ecb_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##_ecb(void) { return &cname##_ecb; }
 548 */
 549
 550 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
 551                                block_size, key_len, iv_len, cbits, \
 552                                flags, init_key, \
 553                                cleanup, set_asn1, get_asn1, ctrl) \
 554         BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 555         BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
 556                           cbits, flags, init_key, cleanup, set_asn1, \
 557                           get_asn1, ctrl)
 558
 559 #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
 560         BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
 561         BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
 562                              NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
 563                              (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
 564                              cipher##_init_key, NULL, NULL, NULL, NULL)
 565
 566 typedef struct {
 567     unsigned char iv[EVP_MAX_IV_LENGTH];
 568     unsigned int iv_len;
 569     unsigned int tag_len;
 570 } evp_cipher_aead_asn1_params;
 571
 572 int evp_cipher_param_to_asn1_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
 573                                 evp_cipher_aead_asn1_params *params);
 574
 575 int evp_cipher_asn1_to_param_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
 576                                 evp_cipher_aead_asn1_params *params);
 577
 578 /*
 579  * To support transparent execution of operation in backends other
 580  * than the "origin" key, we support transparent export/import to
 581  * those providers, and maintain a cache of the imported keydata,
 582  * so we don't need to redo the export/import every time we perform
 583  * the same operation in that same provider.
 584  * This requires that the "origin" backend (whether it's a legacy or a
 585  * provider "origin") implements exports, and that the target provider
 586  * has an EVP_KEYMGMT that implements import.
 587  */
 588 typedef struct {
 589     EVP_KEYMGMT *keymgmt;
 590     void *keydata;
 591 } OP_CACHE_ELEM;
 592
 593 DEFINE_STACK_OF(OP_CACHE_ELEM)
 594
 595 /*
 596  * An EVP_PKEY can have the following states:
 597  *
 598  * untyped & empty:
 599  *
 600  *     type == EVP_PKEY_NONE && keymgmt == NULL
 601  *
 602  * typed & empty:
 603  *
 604  *     (type != EVP_PKEY_NONE && pkey.ptr == NULL)      ## legacy (libcrypto only)
 605  *     || (keymgmt != NULL && keydata == NULL)          ## provider side
 606  *
 607  * fully assigned:
 608  *
 609  *     (type != EVP_PKEY_NONE && pkey.ptr != NULL)      ## legacy (libcrypto only)
 610  *     || (keymgmt != NULL && keydata != NULL)          ## provider side
 611  *
 612  * The easiest way to detect a legacy key is:
 613  *
 614  *     keymgmt == NULL && type != EVP_PKEY_NONE
 615  *
 616  * The easiest way to detect a provider side key is:
 617  *
 618  *     keymgmt != NULL
 619  */
 620 #define evp_pkey_is_blank(pk)                                   \
 621     ((pk)->type == EVP_PKEY_NONE && (pk)->keymgmt == NULL)
 622 #define evp_pkey_is_typed(pk)                                   \
 623     ((pk)->type != EVP_PKEY_NONE || (pk)->keymgmt != NULL)
 624 #ifndef FIPS_MODULE
 625 # define evp_pkey_is_assigned(pk)                               \
 626     ((pk)->pkey.ptr != NULL || (pk)->keydata != NULL)
 627 #else
 628 # define evp_pkey_is_assigned(pk)                               \
 629     ((pk)->keydata != NULL)
 630 #endif
 631 #define evp_pkey_is_legacy(pk)                                  \
 632     ((pk)->type != EVP_PKEY_NONE && (pk)->keymgmt == NULL)
 633 #define evp_pkey_is_provided(pk)                                \
 634     ((pk)->keymgmt != NULL)
 635
 636 union legacy_pkey_st {
 637     void *ptr;
 638     struct rsa_st *rsa;     /* RSA */
 639 #  ifndef OPENSSL_NO_DSA
 640     struct dsa_st *dsa;     /* DSA */
 641 #  endif
 642 #  ifndef OPENSSL_NO_DH
 643     struct dh_st *dh;       /* DH */
 644 #  endif
 645 #  ifndef OPENSSL_NO_EC
 646     struct ec_key_st *ec;   /* ECC */
 647     ECX_KEY *ecx;           /* X25519, X448, Ed25519, Ed448 */
 648 #  endif
 649 };
 650
 651 struct evp_pkey_st {
 652     /* == Legacy attributes == */
 653     int type;
 654     int save_type;
 655
 656 # ifndef FIPS_MODULE
 657     /*
 658      * Legacy key "origin" is composed of a pointer to an EVP_PKEY_ASN1_METHOD,
 659      * a pointer to a low level key and possibly a pointer to an engine.
 660      */
 661     const EVP_PKEY_ASN1_METHOD *ameth;
 662     ENGINE *engine;
 663     ENGINE *pmeth_engine; /* If not NULL public key ENGINE to use */
 664
 665     /* Union to store the reference to an origin legacy key */
 666     union legacy_pkey_st pkey;
 667
 668     /* Union to store the reference to a non-origin legacy key */
 669     union legacy_pkey_st legacy_cache_pkey;
 670 # endif
 671
 672     /* == Common attributes == */
 673     CRYPTO_REF_COUNT references;
 674     CRYPTO_RWLOCK *lock;
 675 #ifndef FIPS_MODULE
 676     STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
 677     int save_parameters;
 678     unsigned int foreign:1; /* the low-level key is using an engine or an app-method */
 679     CRYPTO_EX_DATA ex_data;
 680 #endif
 681
 682     /* == Provider attributes == */
 683
 684     /*
 685      * Provider keydata "origin" is composed of a pointer to an EVP_KEYMGMT
 686      * and a pointer to the provider side key data.  This is never used at
 687      * the same time as the legacy key data above.
 688      */
 689     EVP_KEYMGMT *keymgmt;
 690     void *keydata;
 691     /*
 692      * If any libcrypto code does anything that may modify the keydata
 693      * contents, this dirty counter must be incremented.
 694      */
 695     size_t dirty_cnt;
 696
 697     /*
 698      * To support transparent execution of operation in backends other
 699      * than the "origin" key, we support transparent export/import to
 700      * those providers, and maintain a cache of the imported keydata,
 701      * so we don't need to redo the export/import every time we perform
 702      * the same operation in that same provider.
 703      */
 704     STACK_OF(OP_CACHE_ELEM) *operation_cache;
 705
 706     /*
 707      * We keep a copy of that "origin"'s dirty count, so we know if the
 708      * operation cache needs flushing.
 709      */
 710     size_t dirty_cnt_copy;
 711
 712     /* Cache of key object information */
 713     struct {
 714         int bits;
 715         int security_bits;
 716         int size;
 717     } cache;
 718 } /* EVP_PKEY */ ;
 719
 720 #define EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) \
 721     ((ctx)->operation == EVP_PKEY_OP_SIGN \
 722      || (ctx)->operation == EVP_PKEY_OP_SIGNCTX \
 723      || (ctx)->operation == EVP_PKEY_OP_VERIFY \
 724      || (ctx)->operation == EVP_PKEY_OP_VERIFYCTX \
 725      || (ctx)->operation == EVP_PKEY_OP_VERIFYRECOVER)
 726
 727 #define EVP_PKEY_CTX_IS_DERIVE_OP(ctx) \
 728     ((ctx)->operation == EVP_PKEY_OP_DERIVE)
 729
 730 #define EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx) \
 731     ((ctx)->operation == EVP_PKEY_OP_ENCRYPT \
 732      || (ctx)->operation == EVP_PKEY_OP_DECRYPT)
 733
 734 #define EVP_PKEY_CTX_IS_GEN_OP(ctx) \
 735     ((ctx)->operation == EVP_PKEY_OP_PARAMGEN \
 736      || (ctx)->operation == EVP_PKEY_OP_KEYGEN)
 737
 738 #define EVP_PKEY_CTX_IS_FROMDATA_OP(ctx) \
 739     ((ctx)->operation == EVP_PKEY_OP_FROMDATA)
 740
 741 #define EVP_PKEY_CTX_IS_KEM_OP(ctx) \
 742     ((ctx)->operation == EVP_PKEY_OP_ENCAPSULATE \
 743      || (ctx)->operation == EVP_PKEY_OP_DECAPSULATE)
 744
 745 void openssl_add_all_ciphers_int(void);
 746 void openssl_add_all_digests_int(void);
 747 void evp_cleanup_int(void);
 748 void evp_app_cleanup_int(void);
 749 void *evp_pkey_export_to_provider(EVP_PKEY *pk, OSSL_LIB_CTX *libctx,
 750                                   EVP_KEYMGMT **keymgmt,
 751                                   const char *propquery);
 752 #ifndef FIPS_MODULE
 753 int evp_pkey_copy_downgraded(EVP_PKEY **dest, const EVP_PKEY *src);
 754 void *evp_pkey_get_legacy(EVP_PKEY *pk);
 755 void evp_pkey_free_legacy(EVP_PKEY *x);
 756 EVP_PKEY *evp_pkcs82pkey_legacy(const PKCS8_PRIV_KEY_INFO *p8inf,
 757                                 OSSL_LIB_CTX *libctx, const char *propq);
 758 #endif
 759
 760 /*
 761  * KEYMGMT utility functions
 762  */
 763
 764 /*
 765  * Key import structure and helper function, to be used as an export callback
 766  */
 767 struct evp_keymgmt_util_try_import_data_st {
 768     EVP_KEYMGMT *keymgmt;
 769     void *keydata;
 770
 771     int selection;
 772 };
 773 int evp_keymgmt_util_try_import(const OSSL_PARAM params[], void *arg);
 774 int evp_keymgmt_util_assign_pkey(EVP_PKEY *pkey, EVP_KEYMGMT *keymgmt,
 775                                  void *keydata);
 776 EVP_PKEY *evp_keymgmt_util_make_pkey(EVP_KEYMGMT *keymgmt, void *keydata);
 777
 778 int evp_keymgmt_util_export(const EVP_PKEY *pk, int selection,
 779                             OSSL_CALLBACK *export_cb, void *export_cbarg);
 780 void *evp_keymgmt_util_export_to_provider(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt);
 781 OP_CACHE_ELEM *evp_keymgmt_util_find_operation_cache(EVP_PKEY *pk,
 782                                                      EVP_KEYMGMT *keymgmt);
 783 int evp_keymgmt_util_clear_operation_cache(EVP_PKEY *pk, int locking);
 784 int evp_keymgmt_util_cache_keydata(EVP_PKEY *pk,
 785                                    EVP_KEYMGMT *keymgmt, void *keydata);
 786 void evp_keymgmt_util_cache_keyinfo(EVP_PKEY *pk);
 787 void *evp_keymgmt_util_fromdata(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
 788                                 int selection, const OSSL_PARAM params[]);
 789 int evp_keymgmt_util_has(EVP_PKEY *pk, int selection);
 790 int evp_keymgmt_util_match(EVP_PKEY *pk1, EVP_PKEY *pk2, int selection);
 791 int evp_keymgmt_util_copy(EVP_PKEY *to, EVP_PKEY *from, int selection);
 792 void *evp_keymgmt_util_gen(EVP_PKEY *target, EVP_KEYMGMT *keymgmt,
 793                            void *genctx, OSSL_CALLBACK *cb, void *cbarg);
 794 int evp_keymgmt_util_get_deflt_digest_name(EVP_KEYMGMT *keymgmt,
 795                                            void *keydata,
 796                                            char *mdname, size_t mdname_sz);
 797
 798 /*
 799  * KEYMGMT provider interface functions
 800  */
 801 void *evp_keymgmt_newdata(const EVP_KEYMGMT *keymgmt);
 802 void evp_keymgmt_freedata(const EVP_KEYMGMT *keymgmt, void *keyddata);
 803 int evp_keymgmt_get_params(const EVP_KEYMGMT *keymgmt,
 804                            void *keydata, OSSL_PARAM params[]);
 805 int evp_keymgmt_set_params(const EVP_KEYMGMT *keymgmt,
 806                            void *keydata, const OSSL_PARAM params[]);
 807 void *evp_keymgmt_gen_init(const EVP_KEYMGMT *keymgmt, int selection,
 808                            const OSSL_PARAM params[]);
 809 int evp_keymgmt_gen_set_template(const EVP_KEYMGMT *keymgmt, void *genctx,
 810                                  void *template);
 811 int evp_keymgmt_gen_set_params(const EVP_KEYMGMT *keymgmt, void *genctx,
 812                                const OSSL_PARAM params[]);
 813 void *evp_keymgmt_gen(const EVP_KEYMGMT *keymgmt, void *genctx,
 814                       OSSL_CALLBACK *cb, void *cbarg);
 815 void evp_keymgmt_gen_cleanup(const EVP_KEYMGMT *keymgmt, void *genctx);
 816
 817 int evp_keymgmt_has_load(const EVP_KEYMGMT *keymgmt);
 818 void *evp_keymgmt_load(const EVP_KEYMGMT *keymgmt,
 819                        const void *objref, size_t objref_sz);
 820
 821 int evp_keymgmt_has(const EVP_KEYMGMT *keymgmt, void *keyddata, int selection);
 822 int evp_keymgmt_validate(const EVP_KEYMGMT *keymgmt, void *keydata,
 823                          int selection, int checktype);
 824 int evp_keymgmt_match(const EVP_KEYMGMT *keymgmt,
 825                       const void *keydata1, const void *keydata2,
 826                       int selection);
 827
 828 int evp_keymgmt_import(const EVP_KEYMGMT *keymgmt, void *keydata,
 829                        int selection, const OSSL_PARAM params[]);
 830 const OSSL_PARAM *evp_keymgmt_import_types(const EVP_KEYMGMT *keymgmt,
 831                                            int selection);
 832 int evp_keymgmt_export(const EVP_KEYMGMT *keymgmt, void *keydata,
 833                        int selection, OSSL_CALLBACK *param_cb, void *cbarg);
 834 const OSSL_PARAM *evp_keymgmt_export_types(const EVP_KEYMGMT *keymgmt,
 835                                            int selection);
 836 void *evp_keymgmt_dup(const EVP_KEYMGMT *keymgmt,
 837                       const void *keydata_from, int selection);
 838
 839 /* Pulling defines out of C source files */
 840
 841 # define EVP_RC4_KEY_SIZE 16
 842 # ifndef TLS1_1_VERSION
 843 #  define TLS1_1_VERSION   0x0302
 844 # endif
 845
 846 void evp_encode_ctx_set_flags(EVP_ENCODE_CTX *ctx, unsigned int flags);
 847
 848 /* EVP_ENCODE_CTX flags */
 849 /* Don't generate new lines when encoding */
 850 #define EVP_ENCODE_CTX_NO_NEWLINES          1
 851 /* Use the SRP base64 alphabet instead of the standard one */
 852 #define EVP_ENCODE_CTX_USE_SRP_ALPHABET     2
 853
 854 const EVP_CIPHER *evp_get_cipherbyname_ex(OSSL_LIB_CTX *libctx,
 855                                           const char *name);
 856 const EVP_MD *evp_get_digestbyname_ex(OSSL_LIB_CTX *libctx,
 857                                       const char *name);
 858
 859 int ossl_pkcs5_pbkdf2_hmac_ex(const char *pass, int passlen,
 860                               const unsigned char *salt, int saltlen, int iter,
 861                               const EVP_MD *digest, int keylen,
 862                               unsigned char *out,
 863                               OSSL_LIB_CTX *libctx, const char *propq);
 864
 865 # ifndef FIPS_MODULE
 866 /*
 867  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 868  *
 869  * Return 1 on success, 0 or negative for errors.
 870  *
 871  * In particular they return -2 if any of the params is not supported.
 872  *
 873  * They are not available in FIPS_MODULE as they depend on
 874  *      - EVP_PKEY_CTX_{get,set}_params()
 875  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 876  *
 877  */
 878 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
 879 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
 880
 881 EVP_MD_CTX *evp_md_ctx_new_ex(EVP_PKEY *pkey, const ASN1_OCTET_STRING *id,
 882                               OSSL_LIB_CTX *libctx, const char *propq);
 883 int evp_pkey_name2type(const char *name);
 884 const char *evp_pkey_type2name(int type);
 885
 886 int evp_pkey_ctx_set1_id_prov(EVP_PKEY_CTX *ctx, const void *id, int len);
 887 int evp_pkey_ctx_get1_id_prov(EVP_PKEY_CTX *ctx, void *id);
 888 int evp_pkey_ctx_get1_id_len_prov(EVP_PKEY_CTX *ctx, size_t *id_len);
 889
 890 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx);
 891 # endif /* !defined(FIPS_MODULE) */
 892
 893 int evp_method_store_flush(OSSL_LIB_CTX *libctx);
 894 int evp_set_default_properties_int(OSSL_LIB_CTX *libctx, const char *propq,
 895                                    int loadconfig, int mirrored);
 896 char *evp_get_global_properties_str(OSSL_LIB_CTX *libctx, int loadconfig);
 897
 898 void evp_md_ctx_clear_digest(EVP_MD_CTX *ctx, int force);
 899
 900 /* Three possible states: */
 901 # define EVP_PKEY_STATE_UNKNOWN         0
 902 # define EVP_PKEY_STATE_LEGACY          1
 903 # define EVP_PKEY_STATE_PROVIDER        2
 904 int evp_pkey_ctx_state(const EVP_PKEY_CTX *ctx);
 905
 906 /* These two must ONLY be called for provider side operations */
 907 int evp_pkey_ctx_ctrl_to_param(EVP_PKEY_CTX *ctx,
 908                                int keytype, int optype,
 909                                int cmd, int p1, void *p2);
 910 int evp_pkey_ctx_ctrl_str_to_param(EVP_PKEY_CTX *ctx,
 911                                    const char *name, const char *value);
 912
 913 /* These two must ONLY be called for legacy operations */
 914 int evp_pkey_ctx_set_params_to_ctrl(EVP_PKEY_CTX *ctx, const OSSL_PARAM *params);
 915 int evp_pkey_ctx_get_params_to_ctrl(EVP_PKEY_CTX *ctx, OSSL_PARAM *params);
 916
 917 /* This must ONLY be called for legacy EVP_PKEYs */
 918 int evp_pkey_get_params_to_ctrl(const EVP_PKEY *pkey, OSSL_PARAM *params);
 919
 920 /* Same as the public get0 functions but are not const */
 921 # ifndef OPENSSL_NO_DEPRECATED_3_0
 922 DH *evp_pkey_get0_DH_int(const EVP_PKEY *pkey);
 923 EC_KEY *evp_pkey_get0_EC_KEY_int(const EVP_PKEY *pkey);
 924 RSA *evp_pkey_get0_RSA_int(const EVP_PKEY *pkey);
 925 # endif
 926
 927 /* Get internal identification number routines */
 928 int evp_asym_cipher_get_number(const EVP_ASYM_CIPHER *cipher);
 929 int evp_cipher_get_number(const EVP_CIPHER *cipher);
 930 int evp_kdf_get_number(const EVP_KDF *kdf);
 931 int evp_kem_get_number(const EVP_KEM *wrap);
 932 int evp_keyexch_get_number(const EVP_KEYEXCH *keyexch);
 933 int evp_keymgmt_get_number(const EVP_KEYMGMT *keymgmt);
 934 int evp_mac_get_number(const EVP_MAC *mac);
 935 int evp_md_get_number(const EVP_MD *md);
 936 int evp_rand_get_number(const EVP_RAND *rand);
 937 int evp_signature_get_number(const EVP_SIGNATURE *signature);
 938
 939 #endif /* OSSL_CRYPTO_EVP_H */