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     /* Method associated with this operation */
  22     const EVP_PKEY_METHOD *pmeth;
  23     /* Engine that implements this method or NULL if builtin */
  24     ENGINE *engine;
  25     /* Key: may be NULL */
  26     EVP_PKEY *pkey;
  27     /* Peer key for key agreement, may be NULL */
  28     EVP_PKEY *peerkey;
  29     /* Actual operation */
  30     int operation;
  31     /* Algorithm specific data */
  32     void *data;
  33     /* Application specific data */
  34     void *app_data;
  35     /* Keygen callback */
  36     EVP_PKEY_gen_cb *pkey_gencb;
  37     /* implementation specific keygen data */
  38     int *keygen_info;
  39     int keygen_info_count;
  40 } /* EVP_PKEY_CTX */ ;
  41
  42 #define EVP_PKEY_FLAG_DYNAMIC   1
  43
  44 struct evp_pkey_method_st {
  45     int pkey_id;
  46     int flags;
  47     int (*init) (EVP_PKEY_CTX *ctx);
  48     int (*copy) (EVP_PKEY_CTX *dst, const EVP_PKEY_CTX *src);
  49     void (*cleanup) (EVP_PKEY_CTX *ctx);
  50     int (*paramgen_init) (EVP_PKEY_CTX *ctx);
  51     int (*paramgen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
  52     int (*keygen_init) (EVP_PKEY_CTX *ctx);
  53     int (*keygen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
  54     int (*sign_init) (EVP_PKEY_CTX *ctx);
  55     int (*sign) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
  56                  const unsigned char *tbs, size_t tbslen);
  57     int (*verify_init) (EVP_PKEY_CTX *ctx);
  58     int (*verify) (EVP_PKEY_CTX *ctx,
  59                    const unsigned char *sig, size_t siglen,
  60                    const unsigned char *tbs, size_t tbslen);
  61     int (*verify_recover_init) (EVP_PKEY_CTX *ctx);
  62     int (*verify_recover) (EVP_PKEY_CTX *ctx,
  63                            unsigned char *rout, size_t *routlen,
  64                            const unsigned char *sig, size_t siglen);
  65     int (*signctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
  66     int (*signctx) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
  67                     EVP_MD_CTX *mctx);
  68     int (*verifyctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
  69     int (*verifyctx) (EVP_PKEY_CTX *ctx, const unsigned char *sig, int siglen,
  70                       EVP_MD_CTX *mctx);
  71     int (*encrypt_init) (EVP_PKEY_CTX *ctx);
  72     int (*encrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
  73                     const unsigned char *in, size_t inlen);
  74     int (*decrypt_init) (EVP_PKEY_CTX *ctx);
  75     int (*decrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
  76                     const unsigned char *in, size_t inlen);
  77     int (*derive_init) (EVP_PKEY_CTX *ctx);
  78     int (*derive) (EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
  79     int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
  80     int (*ctrl_str) (EVP_PKEY_CTX *ctx, const char *type, const char *value);
  81     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
  82                        const unsigned char *tbs, size_t tbslen);
  83     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
  84                          size_t siglen, const unsigned char *tbs,
  85                          size_t tbslen);
  86     int (*check) (EVP_PKEY *pkey);
  87     int (*public_check) (EVP_PKEY *pkey);
  88     int (*param_check) (EVP_PKEY *pkey);
  89
  90     int (*digest_custom) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
  91 } /* EVP_PKEY_METHOD */ ;
  92
  93 DEFINE_STACK_OF_CONST(EVP_PKEY_METHOD)
  94
  95 void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx);
  96
  97 extern const EVP_PKEY_METHOD cmac_pkey_meth;
  98 extern const EVP_PKEY_METHOD dh_pkey_meth;
  99 extern const EVP_PKEY_METHOD dhx_pkey_meth;
 100 extern const EVP_PKEY_METHOD dsa_pkey_meth;
 101 extern const EVP_PKEY_METHOD ec_pkey_meth;
 102 extern const EVP_PKEY_METHOD sm2_pkey_meth;
 103 extern const EVP_PKEY_METHOD ecx25519_pkey_meth;
 104 extern const EVP_PKEY_METHOD ecx448_pkey_meth;
 105 extern const EVP_PKEY_METHOD ed25519_pkey_meth;
 106 extern const EVP_PKEY_METHOD ed448_pkey_meth;
 107 extern const EVP_PKEY_METHOD hmac_pkey_meth;
 108 extern const EVP_PKEY_METHOD rsa_pkey_meth;
 109 extern const EVP_PKEY_METHOD rsa_pss_pkey_meth;
 110 extern const EVP_PKEY_METHOD scrypt_pkey_meth;
 111 extern const EVP_PKEY_METHOD tls1_prf_pkey_meth;
 112 extern const EVP_PKEY_METHOD hkdf_pkey_meth;
 113 extern const EVP_PKEY_METHOD poly1305_pkey_meth;
 114 extern const EVP_PKEY_METHOD siphash_pkey_meth;
 115
 116 /* struct evp_mac_impl_st is defined by the implementation */
 117 typedef struct evp_mac_impl_st EVP_MAC_IMPL;
 118 struct evp_mac_st {
 119     int type;
 120     EVP_MAC_IMPL *(*new) (void);
 121     int (*copy) (EVP_MAC_IMPL *macdst, EVP_MAC_IMPL *macsrc);
 122     void (*free) (EVP_MAC_IMPL *macctx);
 123     size_t (*size) (EVP_MAC_IMPL *macctx);
 124     int (*init) (EVP_MAC_IMPL *macctx);
 125     int (*update) (EVP_MAC_IMPL *macctx, const unsigned char *data,
 126                    size_t datalen);
 127     int (*final) (EVP_MAC_IMPL *macctx, unsigned char *out);
 128     int (*ctrl) (EVP_MAC_IMPL *macctx, int cmd, va_list args);
 129     int (*ctrl_str) (EVP_MAC_IMPL *macctx, const char *type, const char *value);
 130 };
 131
 132 extern const EVP_MAC blake2b_mac_meth;
 133 extern const EVP_MAC blake2s_mac_meth;
 134 extern const EVP_MAC cmac_meth;
 135 extern const EVP_MAC gmac_meth;
 136 extern const EVP_MAC hmac_meth;
 137 extern const EVP_MAC kmac128_meth;
 138 extern const EVP_MAC kmac256_meth;
 139 extern const EVP_MAC siphash_meth;
 140 extern const EVP_MAC poly1305_meth;
 141
 142 /* Internal keccak algorithms used for KMAC */
 143 const EVP_MD *evp_keccak_kmac128(void);
 144 const EVP_MD *evp_keccak_kmac256(void);
 145
 146 /*
 147  * This function is internal for now, but can be made external when needed.
 148  * The documentation would read:
 149  *
 150  * EVP_add_mac() adds the MAC implementation C<mac> to the internal
 151  * object database.
 152  */
 153 int EVP_add_mac(const EVP_MAC *mac);
 154
 155 /* struct evp_kdf_impl_st is defined by the implementation */
 156 typedef struct evp_kdf_impl_st EVP_KDF_IMPL;
 157 typedef struct {
 158     int type;
 159     EVP_KDF_IMPL *(*new) (void);
 160     void (*free) (EVP_KDF_IMPL *impl);
 161     void (*reset) (EVP_KDF_IMPL *impl);
 162     int (*ctrl) (EVP_KDF_IMPL *impl, int cmd, va_list args);
 163     int (*ctrl_str) (EVP_KDF_IMPL *impl, const char *type, const char *value);
 164     size_t (*size) (EVP_KDF_IMPL *impl);
 165     int (*derive) (EVP_KDF_IMPL *impl, unsigned char *key, size_t keylen);
 166 } EVP_KDF_METHOD;
 167
 168 extern const EVP_KDF_METHOD pbkdf2_kdf_meth;
 169 extern const EVP_KDF_METHOD scrypt_kdf_meth;
 170 extern const EVP_KDF_METHOD tls1_prf_kdf_meth;
 171 extern const EVP_KDF_METHOD hkdf_kdf_meth;
 172 extern const EVP_KDF_METHOD sshkdf_kdf_meth;
 173 extern const EVP_KDF_METHOD ss_kdf_meth;
 174
 175 struct evp_md_st {
 176     /* nid */
 177     int type;
 178
 179     /* Legacy structure members */
 180     /* TODO(3.0): Remove these */
 181     int pkey_type;
 182     int md_size;
 183     unsigned long flags;
 184     int (*init) (EVP_MD_CTX *ctx);
 185     int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
 186     int (*final) (EVP_MD_CTX *ctx, unsigned char *md);
 187     int (*copy) (EVP_MD_CTX *to, const EVP_MD_CTX *from);
 188     int (*cleanup) (EVP_MD_CTX *ctx);
 189     int block_size;
 190     int ctx_size;               /* how big does the ctx->md_data need to be */
 191     /* control function */
 192     int (*md_ctrl) (EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
 193
 194     /* New structure members */
 195     /* TODO(3.0): Remove above comment when legacy has gone */
 196     OSSL_PROVIDER *prov;
 197     CRYPTO_REF_COUNT refcnt;
 198     CRYPTO_RWLOCK *lock;
 199     OSSL_OP_digest_newctx_fn *newctx;
 200     OSSL_OP_digest_init_fn *dinit;
 201     OSSL_OP_digest_update_fn *dupdate;
 202     OSSL_OP_digest_final_fn *dfinal;
 203     OSSL_OP_digest_digest_fn *digest;
 204     OSSL_OP_digest_freectx_fn *freectx;
 205     OSSL_OP_digest_dupctx_fn *dupctx;
 206     OSSL_OP_digest_size_fn *size;
 207     OSSL_OP_digest_block_size_fn *dblock_size;
 208
 209 } /* EVP_MD */ ;
 210
 211 struct evp_cipher_st {
 212     int nid;
 213
 214     int block_size;
 215     /* Default value for variable length ciphers */
 216     int key_len;
 217     int iv_len;
 218
 219     /* Legacy structure members */
 220     /* TODO(3.0): Remove these */
 221     /* Various flags */
 222     unsigned long flags;
 223     /* init key */
 224     int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
 225                  const unsigned char *iv, int enc);
 226     /* encrypt/decrypt data */
 227     int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out,
 228                       const unsigned char *in, size_t inl);
 229     /* cleanup ctx */
 230     int (*cleanup) (EVP_CIPHER_CTX *);
 231     /* how big ctx->cipher_data needs to be */
 232     int ctx_size;
 233     /* Populate a ASN1_TYPE with parameters */
 234     int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
 235     /* Get parameters from a ASN1_TYPE */
 236     int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
 237     /* Miscellaneous operations */
 238     int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr);
 239     /* Application data */
 240     void *app_data;
 241
 242     /* New structure members */
 243     /* TODO(3.0): Remove above comment when legacy has gone */
 244     OSSL_PROVIDER *prov;
 245     CRYPTO_REF_COUNT refcnt;
 246     CRYPTO_RWLOCK *lock;
 247     OSSL_OP_cipher_newctx_fn *newctx;
 248     OSSL_OP_cipher_encrypt_init_fn *einit;
 249     OSSL_OP_cipher_decrypt_init_fn *dinit;
 250     OSSL_OP_cipher_update_fn *cupdate;
 251     OSSL_OP_cipher_final_fn *cfinal;
 252     OSSL_OP_cipher_cipher_fn *ccipher;
 253     OSSL_OP_cipher_freectx_fn *freectx;
 254     OSSL_OP_cipher_dupctx_fn *dupctx;
 255     OSSL_OP_cipher_key_length_fn *key_length;
 256     OSSL_OP_cipher_iv_length_fn *iv_length;
 257     OSSL_OP_cipher_block_size_fn *blocksize;
 258     OSSL_OP_cipher_get_params_fn *get_params;
 259     OSSL_OP_cipher_ctx_get_params_fn *ctx_get_params;
 260     OSSL_OP_cipher_ctx_set_params_fn *ctx_set_params;
 261 } /* EVP_CIPHER */ ;
 262
 263 /* Macros to code block cipher wrappers */
 264
 265 /* Wrapper functions for each cipher mode */
 266
 267 #define EVP_C_DATA(kstruct, ctx) \
 268         ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx))
 269
 270 #define BLOCK_CIPHER_ecb_loop() \
 271         size_t i, bl; \
 272         bl = EVP_CIPHER_CTX_cipher(ctx)->block_size;    \
 273         if (inl < bl) return 1;\
 274         inl -= bl; \
 275         for (i=0; i <= inl; i+=bl)
 276
 277 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
 278 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 279 {\
 280         BLOCK_CIPHER_ecb_loop() \
 281             cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_encrypting(ctx)); \
 282         return 1;\
 283 }
 284
 285 #define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2))
 286
 287 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
 288     static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 289 {\
 290         while(inl>=EVP_MAXCHUNK) {\
 291             int num = EVP_CIPHER_CTX_num(ctx);\
 292             cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
 293             EVP_CIPHER_CTX_set_num(ctx, num);\
 294             inl-=EVP_MAXCHUNK;\
 295             in +=EVP_MAXCHUNK;\
 296             out+=EVP_MAXCHUNK;\
 297         }\
 298         if (inl) {\
 299             int num = EVP_CIPHER_CTX_num(ctx);\
 300             cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
 301             EVP_CIPHER_CTX_set_num(ctx, num);\
 302         }\
 303         return 1;\
 304 }
 305
 306 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
 307 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 308 {\
 309         while(inl>=EVP_MAXCHUNK) \
 310             {\
 311             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));\
 312             inl-=EVP_MAXCHUNK;\
 313             in +=EVP_MAXCHUNK;\
 314             out+=EVP_MAXCHUNK;\
 315             }\
 316         if (inl)\
 317             cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));\
 318         return 1;\
 319 }
 320
 321 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched)  \
 322 static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 323 {\
 324     size_t chunk = EVP_MAXCHUNK;\
 325     if (cbits == 1)  chunk >>= 3;\
 326     if (inl < chunk) chunk = inl;\
 327     while (inl && inl >= chunk)\
 328     {\
 329         int num = EVP_CIPHER_CTX_num(ctx);\
 330         cprefix##_cfb##cbits##_encrypt(in, out, (long) \
 331             ((cbits == 1) \
 332                 && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \
 333                 ? chunk*8 : chunk), \
 334             &EVP_C_DATA(kstruct, ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx),\
 335             &num, EVP_CIPHER_CTX_encrypting(ctx));\
 336         EVP_CIPHER_CTX_set_num(ctx, num);\
 337         inl -= chunk;\
 338         in += chunk;\
 339         out += chunk;\
 340         if (inl < chunk) chunk = inl;\
 341     }\
 342     return 1;\
 343 }
 344
 345 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 346         BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
 347         BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
 348         BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
 349         BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
 350
 351 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
 352                           key_len, iv_len, flags, init_key, cleanup, \
 353                           set_asn1, get_asn1, ctrl) \
 354 static const EVP_CIPHER cname##_##mode = { \
 355         nid##_##nmode, block_size, key_len, iv_len, \
 356         flags | EVP_CIPH_##MODE##_MODE, \
 357         init_key, \
 358         cname##_##mode##_cipher, \
 359         cleanup, \
 360         sizeof(kstruct), \
 361         set_asn1, get_asn1,\
 362         ctrl, \
 363         NULL \
 364 }; \
 365 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
 366
 367 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
 368                              iv_len, flags, init_key, cleanup, set_asn1, \
 369                              get_asn1, ctrl) \
 370 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
 371                   iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 372
 373 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
 374                              iv_len, cbits, flags, init_key, cleanup, \
 375                              set_asn1, get_asn1, ctrl) \
 376 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
 377                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 378                   get_asn1, ctrl)
 379
 380 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
 381                              iv_len, cbits, flags, init_key, cleanup, \
 382                              set_asn1, get_asn1, ctrl) \
 383 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
 384                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 385                   get_asn1, ctrl)
 386
 387 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
 388                              flags, init_key, cleanup, set_asn1, \
 389                              get_asn1, ctrl) \
 390 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
 391                   0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 392
 393 #define BLOCK_CIPHER_defs(cname, kstruct, \
 394                           nid, block_size, key_len, iv_len, cbits, flags, \
 395                           init_key, cleanup, set_asn1, get_asn1, ctrl) \
 396 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
 397                      init_key, cleanup, set_asn1, get_asn1, ctrl) \
 398 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
 399                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 400 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
 401                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 402 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
 403                      init_key, cleanup, set_asn1, get_asn1, ctrl)
 404
 405 /*-
 406 #define BLOCK_CIPHER_defs(cname, kstruct, \
 407                                 nid, block_size, key_len, iv_len, flags,\
 408                                  init_key, cleanup, set_asn1, get_asn1, ctrl)\
 409 static const EVP_CIPHER cname##_cbc = {\
 410         nid##_cbc, block_size, key_len, iv_len, \
 411         flags | EVP_CIPH_CBC_MODE,\
 412         init_key,\
 413         cname##_cbc_cipher,\
 414         cleanup,\
 415         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 416                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 417         set_asn1, get_asn1,\
 418         ctrl, \
 419         NULL \
 420 };\
 421 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
 422 static const EVP_CIPHER cname##_cfb = {\
 423         nid##_cfb64, 1, key_len, iv_len, \
 424         flags | EVP_CIPH_CFB_MODE,\
 425         init_key,\
 426         cname##_cfb_cipher,\
 427         cleanup,\
 428         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 429                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 430         set_asn1, get_asn1,\
 431         ctrl,\
 432         NULL \
 433 };\
 434 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
 435 static const EVP_CIPHER cname##_ofb = {\
 436         nid##_ofb64, 1, key_len, iv_len, \
 437         flags | EVP_CIPH_OFB_MODE,\
 438         init_key,\
 439         cname##_ofb_cipher,\
 440         cleanup,\
 441         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 442                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 443         set_asn1, get_asn1,\
 444         ctrl,\
 445         NULL \
 446 };\
 447 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
 448 static const EVP_CIPHER cname##_ecb = {\
 449         nid##_ecb, block_size, key_len, iv_len, \
 450         flags | EVP_CIPH_ECB_MODE,\
 451         init_key,\
 452         cname##_ecb_cipher,\
 453         cleanup,\
 454         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 455                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 456         set_asn1, get_asn1,\
 457         ctrl,\
 458         NULL \
 459 };\
 460 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
 461 */
 462
 463 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
 464                                block_size, key_len, iv_len, cbits, \
 465                                flags, init_key, \
 466                                cleanup, set_asn1, get_asn1, ctrl) \
 467         BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 468         BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
 469                           cbits, flags, init_key, cleanup, set_asn1, \
 470                           get_asn1, ctrl)
 471
 472 #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
 473         BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
 474         BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
 475                              NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
 476                              (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
 477                              cipher##_init_key, NULL, NULL, NULL, NULL)
 478
 479
 480 # ifndef OPENSSL_NO_EC
 481
 482 #define X25519_KEYLEN        32
 483 #define X448_KEYLEN          56
 484 #define ED448_KEYLEN         57
 485
 486 #define MAX_KEYLEN  ED448_KEYLEN
 487
 488 typedef struct {
 489     unsigned char pubkey[MAX_KEYLEN];
 490     unsigned char *privkey;
 491 } ECX_KEY;
 492
 493 #endif
 494
 495 /*
 496  * Type needs to be a bit field Sub-type needs to be for variations on the
 497  * method, as in, can it do arbitrary encryption....
 498  */
 499 struct evp_pkey_st {
 500     int type;
 501     int save_type;
 502     CRYPTO_REF_COUNT references;
 503     const EVP_PKEY_ASN1_METHOD *ameth;
 504     ENGINE *engine;
 505     ENGINE *pmeth_engine; /* If not NULL public key ENGINE to use */
 506     union {
 507         void *ptr;
 508 # ifndef OPENSSL_NO_RSA
 509         struct rsa_st *rsa;     /* RSA */
 510 # endif
 511 # ifndef OPENSSL_NO_DSA
 512         struct dsa_st *dsa;     /* DSA */
 513 # endif
 514 # ifndef OPENSSL_NO_DH
 515         struct dh_st *dh;       /* DH */
 516 # endif
 517 # ifndef OPENSSL_NO_EC
 518         struct ec_key_st *ec;   /* ECC */
 519         ECX_KEY *ecx;           /* X25519, X448, Ed25519, Ed448 */
 520 # endif
 521     } pkey;
 522     int save_parameters;
 523     STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
 524     CRYPTO_RWLOCK *lock;
 525 } /* EVP_PKEY */ ;
 526
 527
 528 void openssl_add_all_ciphers_int(void);
 529 void openssl_add_all_digests_int(void);
 530 void openssl_add_all_macs_int(void);
 531 void evp_cleanup_int(void);
 532 void evp_app_cleanup_int(void);
 533
 534 /* Pulling defines out of C source files */
 535
 536 #define EVP_RC4_KEY_SIZE 16
 537 #ifndef TLS1_1_VERSION
 538 # define TLS1_1_VERSION   0x0302
 539 #endif
 540
 541 void evp_encode_ctx_set_flags(EVP_ENCODE_CTX *ctx, unsigned int flags);
 542
 543 /* EVP_ENCODE_CTX flags */
 544 /* Don't generate new lines when encoding */
 545 #define EVP_ENCODE_CTX_NO_NEWLINES          1
 546 /* Use the SRP base64 alphabet instead of the standard one */
 547 #define EVP_ENCODE_CTX_USE_SRP_ALPHABET     2