crypto/include/internal/evp_int.h

   1 /*
   2  * Copyright 2015-2018 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 #include <openssl/evp.h>
  11 #include <openssl/core_numbers.h>
  12 #include "internal/refcount.h"
  13
  14 /*
  15  * Don't free up md_ctx->pctx in EVP_MD_CTX_reset, use the reserved flag
  16  * values in evp.h
  17  */
  18 #define EVP_MD_CTX_FLAG_KEEP_PKEY_CTX   0x0400
  19
  20 struct evp_pkey_ctx_st {
  21     EVP_KEYEXCH *exchange;
  22     void *exchprovctx;
  23
  24     /* Legacy fields below */
  25
  26     /* Method associated with this operation */
  27     const EVP_PKEY_METHOD *pmeth;
  28     /* Engine that implements this method or NULL if builtin */
  29     ENGINE *engine;
  30     /* Key: may be NULL */
  31     EVP_PKEY *pkey;
  32     /* Peer key for key agreement, may be NULL */
  33     EVP_PKEY *peerkey;
  34     /* Actual operation */
  35     int operation;
  36     /* Algorithm specific data */
  37     void *data;
  38     /* Application specific data */
  39     void *app_data;
  40     /* Keygen callback */
  41     EVP_PKEY_gen_cb *pkey_gencb;
  42     /* implementation specific keygen data */
  43     int *keygen_info;
  44     int keygen_info_count;
  45 } /* EVP_PKEY_CTX */ ;
  46
  47 #define EVP_PKEY_FLAG_DYNAMIC   1
  48
  49 struct evp_pkey_method_st {
  50     int pkey_id;
  51     int flags;
  52     int (*init) (EVP_PKEY_CTX *ctx);
  53     int (*copy) (EVP_PKEY_CTX *dst, const EVP_PKEY_CTX *src);
  54     void (*cleanup) (EVP_PKEY_CTX *ctx);
  55     int (*paramgen_init) (EVP_PKEY_CTX *ctx);
  56     int (*paramgen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
  57     int (*keygen_init) (EVP_PKEY_CTX *ctx);
  58     int (*keygen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
  59     int (*sign_init) (EVP_PKEY_CTX *ctx);
  60     int (*sign) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
  61                  const unsigned char *tbs, size_t tbslen);
  62     int (*verify_init) (EVP_PKEY_CTX *ctx);
  63     int (*verify) (EVP_PKEY_CTX *ctx,
  64                    const unsigned char *sig, size_t siglen,
  65                    const unsigned char *tbs, size_t tbslen);
  66     int (*verify_recover_init) (EVP_PKEY_CTX *ctx);
  67     int (*verify_recover) (EVP_PKEY_CTX *ctx,
  68                            unsigned char *rout, size_t *routlen,
  69                            const unsigned char *sig, size_t siglen);
  70     int (*signctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
  71     int (*signctx) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
  72                     EVP_MD_CTX *mctx);
  73     int (*verifyctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
  74     int (*verifyctx) (EVP_PKEY_CTX *ctx, const unsigned char *sig, int siglen,
  75                       EVP_MD_CTX *mctx);
  76     int (*encrypt_init) (EVP_PKEY_CTX *ctx);
  77     int (*encrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
  78                     const unsigned char *in, size_t inlen);
  79     int (*decrypt_init) (EVP_PKEY_CTX *ctx);
  80     int (*decrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
  81                     const unsigned char *in, size_t inlen);
  82     int (*derive_init) (EVP_PKEY_CTX *ctx);
  83     int (*derive) (EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
  84     int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
  85     int (*ctrl_str) (EVP_PKEY_CTX *ctx, const char *type, const char *value);
  86     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
  87                        const unsigned char *tbs, size_t tbslen);
  88     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
  89                          size_t siglen, const unsigned char *tbs,
  90                          size_t tbslen);
  91     int (*check) (EVP_PKEY *pkey);
  92     int (*public_check) (EVP_PKEY *pkey);
  93     int (*param_check) (EVP_PKEY *pkey);
  94
  95     int (*digest_custom) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
  96 } /* EVP_PKEY_METHOD */ ;
  97
  98 DEFINE_STACK_OF_CONST(EVP_PKEY_METHOD)
  99
 100 void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx);
 101
 102 extern const EVP_PKEY_METHOD cmac_pkey_meth;
 103 extern const EVP_PKEY_METHOD dh_pkey_meth;
 104 extern const EVP_PKEY_METHOD dhx_pkey_meth;
 105 extern const EVP_PKEY_METHOD dsa_pkey_meth;
 106 extern const EVP_PKEY_METHOD ec_pkey_meth;
 107 extern const EVP_PKEY_METHOD sm2_pkey_meth;
 108 extern const EVP_PKEY_METHOD ecx25519_pkey_meth;
 109 extern const EVP_PKEY_METHOD ecx448_pkey_meth;
 110 extern const EVP_PKEY_METHOD ed25519_pkey_meth;
 111 extern const EVP_PKEY_METHOD ed448_pkey_meth;
 112 extern const EVP_PKEY_METHOD hmac_pkey_meth;
 113 extern const EVP_PKEY_METHOD rsa_pkey_meth;
 114 extern const EVP_PKEY_METHOD rsa_pss_pkey_meth;
 115 extern const EVP_PKEY_METHOD scrypt_pkey_meth;
 116 extern const EVP_PKEY_METHOD tls1_prf_pkey_meth;
 117 extern const EVP_PKEY_METHOD hkdf_pkey_meth;
 118 extern const EVP_PKEY_METHOD poly1305_pkey_meth;
 119 extern const EVP_PKEY_METHOD siphash_pkey_meth;
 120
 121 /* struct evp_mac_impl_st is defined by the implementation */
 122 typedef struct evp_mac_impl_st EVP_MAC_IMPL;
 123 struct evp_mac_st {
 124     OSSL_PROVIDER *prov;
 125     char *name;
 126
 127     CRYPTO_REF_COUNT refcnt;
 128     CRYPTO_RWLOCK *lock;
 129
 130     OSSL_OP_mac_newctx_fn *newctx;
 131     OSSL_OP_mac_dupctx_fn *dupctx;
 132     OSSL_OP_mac_freectx_fn *freectx;
 133     OSSL_OP_mac_size_fn *size;
 134     OSSL_OP_mac_init_fn *init;
 135     OSSL_OP_mac_update_fn *update;
 136     OSSL_OP_mac_final_fn *final;
 137     OSSL_OP_mac_gettable_params_fn *gettable_params;
 138     OSSL_OP_mac_gettable_ctx_params_fn *gettable_ctx_params;
 139     OSSL_OP_mac_settable_ctx_params_fn *settable_ctx_params;
 140     OSSL_OP_mac_get_params_fn *get_params;
 141     OSSL_OP_mac_ctx_get_params_fn *ctx_get_params;
 142     OSSL_OP_mac_ctx_set_params_fn *ctx_set_params;
 143 };
 144
 145 /* Internal keccak algorithms used for KMAC */
 146 const EVP_MD *evp_keccak_kmac128(void);
 147 const EVP_MD *evp_keccak_kmac256(void);
 148
 149 /*
 150  * This function is internal for now, but can be made external when needed.
 151  * The documentation would read:
 152  *
 153  * EVP_add_mac() adds the MAC implementation C<mac> to the internal
 154  * object database.
 155  */
 156 int EVP_add_mac(const EVP_MAC *mac);
 157 int EVP_add_kdf(const EVP_KDF *kdf);
 158
 159 /* struct evp_kdf_impl_st is defined by the implementation */
 160 typedef struct evp_kdf_impl_st EVP_KDF_IMPL;
 161 struct evp_kdf_st {
 162     int type;
 163     EVP_KDF_IMPL *(*new) (void);
 164     void (*free) (EVP_KDF_IMPL *impl);
 165     void (*reset) (EVP_KDF_IMPL *impl);
 166     int (*ctrl) (EVP_KDF_IMPL *impl, int cmd, va_list args);
 167     int (*ctrl_str) (EVP_KDF_IMPL *impl, const char *type, const char *value);
 168     size_t (*size) (EVP_KDF_IMPL *impl);
 169     int (*derive) (EVP_KDF_IMPL *impl, unsigned char *key, size_t keylen);
 170 };
 171
 172 extern const EVP_KDF pbkdf2_kdf_meth;
 173 extern const EVP_KDF scrypt_kdf_meth;
 174 extern const EVP_KDF tls1_prf_kdf_meth;
 175 extern const EVP_KDF hkdf_kdf_meth;
 176 extern const EVP_KDF sshkdf_kdf_meth;
 177 extern const EVP_KDF ss_kdf_meth;
 178 extern const EVP_KDF x963_kdf_meth;
 179 extern const EVP_KDF x942_kdf_meth;
 180
 181 struct evp_md_st {
 182     /* nid */
 183     int type;
 184
 185     /* Legacy structure members */
 186     /* TODO(3.0): Remove these */
 187     int pkey_type;
 188     int md_size;
 189     unsigned long flags;
 190     int (*init) (EVP_MD_CTX *ctx);
 191     int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
 192     int (*final) (EVP_MD_CTX *ctx, unsigned char *md);
 193     int (*copy) (EVP_MD_CTX *to, const EVP_MD_CTX *from);
 194     int (*cleanup) (EVP_MD_CTX *ctx);
 195     int block_size;
 196     int ctx_size;               /* how big does the ctx->md_data need to be */
 197     /* control function */
 198     int (*md_ctrl) (EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
 199
 200     /* New structure members */
 201     /* TODO(3.0): Remove above comment when legacy has gone */
 202     char *name;
 203     OSSL_PROVIDER *prov;
 204     CRYPTO_REF_COUNT refcnt;
 205     CRYPTO_RWLOCK *lock;
 206     OSSL_OP_digest_newctx_fn *newctx;
 207     OSSL_OP_digest_init_fn *dinit;
 208     OSSL_OP_digest_update_fn *dupdate;
 209     OSSL_OP_digest_final_fn *dfinal;
 210     OSSL_OP_digest_digest_fn *digest;
 211     OSSL_OP_digest_freectx_fn *freectx;
 212     OSSL_OP_digest_dupctx_fn *dupctx;
 213     OSSL_OP_digest_get_params_fn *get_params;
 214     OSSL_OP_digest_ctx_set_params_fn *ctx_set_params;
 215     OSSL_OP_digest_ctx_get_params_fn *ctx_get_params;
 216     OSSL_OP_digest_gettable_params_fn *gettable_params;
 217     OSSL_OP_digest_settable_ctx_params_fn *settable_ctx_params;
 218     OSSL_OP_digest_gettable_ctx_params_fn *gettable_ctx_params;
 219
 220 } /* EVP_MD */ ;
 221
 222 struct evp_cipher_st {
 223     int nid;
 224
 225     int block_size;
 226     /* Default value for variable length ciphers */
 227     int key_len;
 228     int iv_len;
 229
 230     /* Legacy structure members */
 231     /* TODO(3.0): Remove these */
 232     /* Various flags */
 233     unsigned long flags;
 234     /* init key */
 235     int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
 236                  const unsigned char *iv, int enc);
 237     /* encrypt/decrypt data */
 238     int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out,
 239                       const unsigned char *in, size_t inl);
 240     /* cleanup ctx */
 241     int (*cleanup) (EVP_CIPHER_CTX *);
 242     /* how big ctx->cipher_data needs to be */
 243     int ctx_size;
 244     /* Populate a ASN1_TYPE with parameters */
 245     int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
 246     /* Get parameters from a ASN1_TYPE */
 247     int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
 248     /* Miscellaneous operations */
 249     int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr);
 250     /* Application data */
 251     void *app_data;
 252
 253     /* New structure members */
 254     /* TODO(3.0): Remove above comment when legacy has gone */
 255     char *name;
 256     OSSL_PROVIDER *prov;
 257     CRYPTO_REF_COUNT refcnt;
 258     CRYPTO_RWLOCK *lock;
 259     OSSL_OP_cipher_newctx_fn *newctx;
 260     OSSL_OP_cipher_encrypt_init_fn *einit;
 261     OSSL_OP_cipher_decrypt_init_fn *dinit;
 262     OSSL_OP_cipher_update_fn *cupdate;
 263     OSSL_OP_cipher_final_fn *cfinal;
 264     OSSL_OP_cipher_cipher_fn *ccipher;
 265     OSSL_OP_cipher_freectx_fn *freectx;
 266     OSSL_OP_cipher_dupctx_fn *dupctx;
 267     OSSL_OP_cipher_get_params_fn *get_params;
 268     OSSL_OP_cipher_ctx_get_params_fn *ctx_get_params;
 269     OSSL_OP_cipher_ctx_set_params_fn *ctx_set_params;
 270     OSSL_OP_cipher_gettable_params_fn *gettable_params;
 271     OSSL_OP_cipher_gettable_ctx_params_fn *gettable_ctx_params;
 272     OSSL_OP_cipher_settable_ctx_params_fn *settable_ctx_params;
 273 } /* EVP_CIPHER */ ;
 274
 275 /* Macros to code block cipher wrappers */
 276
 277 /* Wrapper functions for each cipher mode */
 278
 279 #define EVP_C_DATA(kstruct, ctx) \
 280         ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx))
 281
 282 #define BLOCK_CIPHER_ecb_loop() \
 283         size_t i, bl; \
 284         bl = EVP_CIPHER_CTX_cipher(ctx)->block_size;    \
 285         if (inl < bl) return 1;\
 286         inl -= bl; \
 287         for (i=0; i <= inl; i+=bl)
 288
 289 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
 290 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 291 {\
 292         BLOCK_CIPHER_ecb_loop() \
 293             cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_encrypting(ctx)); \
 294         return 1;\
 295 }
 296
 297 #define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2))
 298
 299 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
 300     static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 301 {\
 302         while(inl>=EVP_MAXCHUNK) {\
 303             int num = EVP_CIPHER_CTX_num(ctx);\
 304             cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
 305             EVP_CIPHER_CTX_set_num(ctx, num);\
 306             inl-=EVP_MAXCHUNK;\
 307             in +=EVP_MAXCHUNK;\
 308             out+=EVP_MAXCHUNK;\
 309         }\
 310         if (inl) {\
 311             int num = EVP_CIPHER_CTX_num(ctx);\
 312             cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
 313             EVP_CIPHER_CTX_set_num(ctx, num);\
 314         }\
 315         return 1;\
 316 }
 317
 318 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
 319 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 320 {\
 321         while(inl>=EVP_MAXCHUNK) \
 322             {\
 323             cprefix##_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));\
 324             inl-=EVP_MAXCHUNK;\
 325             in +=EVP_MAXCHUNK;\
 326             out+=EVP_MAXCHUNK;\
 327             }\
 328         if (inl)\
 329             cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));\
 330         return 1;\
 331 }
 332
 333 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched)  \
 334 static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 335 {\
 336     size_t chunk = EVP_MAXCHUNK;\
 337     if (cbits == 1)  chunk >>= 3;\
 338     if (inl < chunk) chunk = inl;\
 339     while (inl && inl >= chunk)\
 340     {\
 341         int num = EVP_CIPHER_CTX_num(ctx);\
 342         cprefix##_cfb##cbits##_encrypt(in, out, (long) \
 343             ((cbits == 1) \
 344                 && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \
 345                 ? chunk*8 : chunk), \
 346             &EVP_C_DATA(kstruct, ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx),\
 347             &num, EVP_CIPHER_CTX_encrypting(ctx));\
 348         EVP_CIPHER_CTX_set_num(ctx, num);\
 349         inl -= chunk;\
 350         in += chunk;\
 351         out += chunk;\
 352         if (inl < chunk) chunk = inl;\
 353     }\
 354     return 1;\
 355 }
 356
 357 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 358         BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
 359         BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
 360         BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
 361         BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
 362
 363 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
 364                           key_len, iv_len, flags, init_key, cleanup, \
 365                           set_asn1, get_asn1, ctrl) \
 366 static const EVP_CIPHER cname##_##mode = { \
 367         nid##_##nmode, block_size, key_len, iv_len, \
 368         flags | EVP_CIPH_##MODE##_MODE, \
 369         init_key, \
 370         cname##_##mode##_cipher, \
 371         cleanup, \
 372         sizeof(kstruct), \
 373         set_asn1, get_asn1,\
 374         ctrl, \
 375         NULL \
 376 }; \
 377 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
 378
 379 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
 380                              iv_len, flags, init_key, cleanup, set_asn1, \
 381                              get_asn1, ctrl) \
 382 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
 383                   iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 384
 385 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
 386                              iv_len, cbits, flags, init_key, cleanup, \
 387                              set_asn1, get_asn1, ctrl) \
 388 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
 389                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 390                   get_asn1, ctrl)
 391
 392 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
 393                              iv_len, cbits, flags, init_key, cleanup, \
 394                              set_asn1, get_asn1, ctrl) \
 395 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
 396                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 397                   get_asn1, ctrl)
 398
 399 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
 400                              flags, init_key, cleanup, set_asn1, \
 401                              get_asn1, ctrl) \
 402 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
 403                   0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 404
 405 #define BLOCK_CIPHER_defs(cname, kstruct, \
 406                           nid, block_size, key_len, iv_len, cbits, flags, \
 407                           init_key, cleanup, set_asn1, get_asn1, ctrl) \
 408 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
 409                      init_key, cleanup, set_asn1, get_asn1, ctrl) \
 410 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
 411                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 412 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
 413                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 414 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
 415                      init_key, cleanup, set_asn1, get_asn1, ctrl)
 416
 417 /*-
 418 #define BLOCK_CIPHER_defs(cname, kstruct, \
 419                                 nid, block_size, key_len, iv_len, flags,\
 420                                  init_key, cleanup, set_asn1, get_asn1, ctrl)\
 421 static const EVP_CIPHER cname##_cbc = {\
 422         nid##_cbc, block_size, key_len, iv_len, \
 423         flags | EVP_CIPH_CBC_MODE,\
 424         init_key,\
 425         cname##_cbc_cipher,\
 426         cleanup,\
 427         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 428                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 429         set_asn1, get_asn1,\
 430         ctrl, \
 431         NULL \
 432 };\
 433 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
 434 static const EVP_CIPHER cname##_cfb = {\
 435         nid##_cfb64, 1, key_len, iv_len, \
 436         flags | EVP_CIPH_CFB_MODE,\
 437         init_key,\
 438         cname##_cfb_cipher,\
 439         cleanup,\
 440         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 441                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 442         set_asn1, get_asn1,\
 443         ctrl,\
 444         NULL \
 445 };\
 446 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
 447 static const EVP_CIPHER cname##_ofb = {\
 448         nid##_ofb64, 1, key_len, iv_len, \
 449         flags | EVP_CIPH_OFB_MODE,\
 450         init_key,\
 451         cname##_ofb_cipher,\
 452         cleanup,\
 453         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 454                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 455         set_asn1, get_asn1,\
 456         ctrl,\
 457         NULL \
 458 };\
 459 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
 460 static const EVP_CIPHER cname##_ecb = {\
 461         nid##_ecb, block_size, key_len, iv_len, \
 462         flags | EVP_CIPH_ECB_MODE,\
 463         init_key,\
 464         cname##_ecb_cipher,\
 465         cleanup,\
 466         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 467                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 468         set_asn1, get_asn1,\
 469         ctrl,\
 470         NULL \
 471 };\
 472 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
 473 */
 474
 475 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
 476                                block_size, key_len, iv_len, cbits, \
 477                                flags, init_key, \
 478                                cleanup, set_asn1, get_asn1, ctrl) \
 479         BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 480         BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
 481                           cbits, flags, init_key, cleanup, set_asn1, \
 482                           get_asn1, ctrl)
 483
 484 #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
 485         BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
 486         BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
 487                              NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
 488                              (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
 489                              cipher##_init_key, NULL, NULL, NULL, NULL)
 490
 491
 492 # ifndef OPENSSL_NO_EC
 493
 494 #define X25519_KEYLEN        32
 495 #define X448_KEYLEN          56
 496 #define ED448_KEYLEN         57
 497
 498 #define MAX_KEYLEN  ED448_KEYLEN
 499
 500 typedef struct {
 501     unsigned char pubkey[MAX_KEYLEN];
 502     unsigned char *privkey;
 503 } ECX_KEY;
 504
 505 #endif
 506
 507 /*
 508  * Type needs to be a bit field Sub-type needs to be for variations on the
 509  * method, as in, can it do arbitrary encryption....
 510  */
 511 struct evp_pkey_st {
 512     /* == Legacy attributes == */
 513     int type;
 514     int save_type;
 515     const EVP_PKEY_ASN1_METHOD *ameth;
 516     ENGINE *engine;
 517     ENGINE *pmeth_engine; /* If not NULL public key ENGINE to use */
 518     union {
 519         void *ptr;
 520 # ifndef OPENSSL_NO_RSA
 521         struct rsa_st *rsa;     /* RSA */
 522 # endif
 523 # ifndef OPENSSL_NO_DSA
 524         struct dsa_st *dsa;     /* DSA */
 525 # endif
 526 # ifndef OPENSSL_NO_DH
 527         struct dh_st *dh;       /* DH */
 528 # endif
 529 # ifndef OPENSSL_NO_EC
 530         struct ec_key_st *ec;   /* ECC */
 531         ECX_KEY *ecx;           /* X25519, X448, Ed25519, Ed448 */
 532 # endif
 533     } pkey;
 534
 535     /* == Common attributes == */
 536     CRYPTO_REF_COUNT references;
 537     CRYPTO_RWLOCK *lock;
 538     STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
 539     int save_parameters;
 540
 541     /* == Provider attributes == */
 542     /*
 543      * To support transparent export/import between providers that
 544      * support the methods for it, and still not having to do the
 545      * export/import every time a key is used, we maintain a cache
 546      * of imported key, indexed by provider address.
 547      * pkeys[0] is *always* the "original" key.
 548      */
 549     struct {
 550         EVP_KEYMGMT *keymgmt;
 551         void *provkey;
 552     } pkeys[10];
 553     /*
 554      * If there is a legacy key assigned to this structure, we keep
 555      * a copy of that key's dirty count.
 556      */
 557     size_t dirty_cnt_copy;
 558 } /* EVP_PKEY */ ;
 559
 560
 561 void openssl_add_all_ciphers_int(void);
 562 void openssl_add_all_digests_int(void);
 563 void openssl_add_all_macs_int(void);
 564 void openssl_add_all_kdfs_int(void);
 565 void evp_cleanup_int(void);
 566 void evp_app_cleanup_int(void);
 567
 568 /* KEYMGMT helper functions */
 569 void *evp_keymgmt_export_to_provider(EVP_PKEY *pk, EVP_KEYMGMT *keymgmt);
 570 void evp_keymgmt_clear_pkey_cache(EVP_PKEY *pk);
 571
 572 /* KEYMGMT provider interface functions */
 573 void *evp_keymgmt_importdomparams(const EVP_KEYMGMT *keymgmt,
 574                                   const OSSL_PARAM params[]);
 575 void *evp_keymgmt_gendomparams(const EVP_KEYMGMT *keymgmt,
 576                             const OSSL_PARAM params[]);
 577 void evp_keymgmt_freedomparams(const EVP_KEYMGMT *keymgmt,
 578                                void *provdomparams);
 579 int evp_keymgmt_exportdomparams(const EVP_KEYMGMT *keymgmt,
 580                                 void *provdomparams, OSSL_PARAM params[]);
 581 const OSSL_PARAM *
 582 evp_keymgmt_importdomparam_types(const EVP_KEYMGMT *keymgmt);
 583 const OSSL_PARAM *
 584 evp_keymgmt_exportdomparam_types(const EVP_KEYMGMT *keymgmt);
 585
 586 void *evp_keymgmt_importkey(const EVP_KEYMGMT *keymgmt,
 587                             const OSSL_PARAM params[]);
 588 void *evp_keymgmt_genkey(const EVP_KEYMGMT *keymgmt, void *domparams,
 589                          const OSSL_PARAM params[]);
 590 void *evp_keymgmt_loadkey(const EVP_KEYMGMT *keymgmt,
 591                           void *id, size_t idlen);
 592 void evp_keymgmt_freekey(const EVP_KEYMGMT *keymgmt, void *provkey);
 593 int evp_keymgmt_exportkey(const EVP_KEYMGMT *keymgmt,
 594                                void *provkey, OSSL_PARAM params[]);
 595 const OSSL_PARAM *evp_keymgmt_importkey_types(const EVP_KEYMGMT *keymgmt);
 596 const OSSL_PARAM *evp_keymgmt_exportkey_types(const EVP_KEYMGMT *keymgmt);
 597
 598 /* Pulling defines out of C source files */
 599
 600 #define EVP_RC4_KEY_SIZE 16
 601 #ifndef TLS1_1_VERSION
 602 # define TLS1_1_VERSION   0x0302
 603 #endif
 604
 605 void evp_encode_ctx_set_flags(EVP_ENCODE_CTX *ctx, unsigned int flags);
 606
 607 /* EVP_ENCODE_CTX flags */
 608 /* Don't generate new lines when encoding */
 609 #define EVP_ENCODE_CTX_NO_NEWLINES          1
 610 /* Use the SRP base64 alphabet instead of the standard one */
 611 #define EVP_ENCODE_CTX_USE_SRP_ALPHABET     2