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 int EVP_add_kdf(const EVP_KDF *kdf);
 155
 156 /* struct evp_kdf_impl_st is defined by the implementation */
 157 typedef struct evp_kdf_impl_st EVP_KDF_IMPL;
 158 struct evp_kdf_st {
 159     int type;
 160     EVP_KDF_IMPL *(*new) (void);
 161     void (*free) (EVP_KDF_IMPL *impl);
 162     void (*reset) (EVP_KDF_IMPL *impl);
 163     int (*ctrl) (EVP_KDF_IMPL *impl, int cmd, va_list args);
 164     int (*ctrl_str) (EVP_KDF_IMPL *impl, const char *type, const char *value);
 165     size_t (*size) (EVP_KDF_IMPL *impl);
 166     int (*derive) (EVP_KDF_IMPL *impl, unsigned char *key, size_t keylen);
 167 };
 168
 169 extern const EVP_KDF pbkdf2_kdf_meth;
 170 extern const EVP_KDF scrypt_kdf_meth;
 171 extern const EVP_KDF tls1_prf_kdf_meth;
 172 extern const EVP_KDF hkdf_kdf_meth;
 173 extern const EVP_KDF sshkdf_kdf_meth;
 174 extern const EVP_KDF ss_kdf_meth;
 175 extern const EVP_KDF x963_kdf_meth;
 176
 177 struct evp_md_st {
 178     /* nid */
 179     int type;
 180
 181     /* Legacy structure members */
 182     /* TODO(3.0): Remove these */
 183     int pkey_type;
 184     int md_size;
 185     unsigned long flags;
 186     int (*init) (EVP_MD_CTX *ctx);
 187     int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
 188     int (*final) (EVP_MD_CTX *ctx, unsigned char *md);
 189     int (*copy) (EVP_MD_CTX *to, const EVP_MD_CTX *from);
 190     int (*cleanup) (EVP_MD_CTX *ctx);
 191     int block_size;
 192     int ctx_size;               /* how big does the ctx->md_data need to be */
 193     /* control function */
 194     int (*md_ctrl) (EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
 195
 196     /* New structure members */
 197     /* TODO(3.0): Remove above comment when legacy has gone */
 198     OSSL_PROVIDER *prov;
 199     CRYPTO_REF_COUNT refcnt;
 200     CRYPTO_RWLOCK *lock;
 201     OSSL_OP_digest_newctx_fn *newctx;
 202     OSSL_OP_digest_init_fn *dinit;
 203     OSSL_OP_digest_update_fn *dupdate;
 204     OSSL_OP_digest_final_fn *dfinal;
 205     OSSL_OP_digest_digest_fn *digest;
 206     OSSL_OP_digest_freectx_fn *freectx;
 207     OSSL_OP_digest_dupctx_fn *dupctx;
 208     OSSL_OP_digest_size_fn *size;
 209     OSSL_OP_digest_block_size_fn *dblock_size;
 210     OSSL_OP_digest_set_params_fn *set_params;
 211     OSSL_OP_digest_get_params_fn *get_params;
 212
 213 } /* EVP_MD */ ;
 214
 215 struct evp_cipher_st {
 216     int nid;
 217
 218     int block_size;
 219     /* Default value for variable length ciphers */
 220     int key_len;
 221     int iv_len;
 222
 223     /* Legacy structure members */
 224     /* TODO(3.0): Remove these */
 225     /* Various flags */
 226     unsigned long flags;
 227     /* init key */
 228     int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
 229                  const unsigned char *iv, int enc);
 230     /* encrypt/decrypt data */
 231     int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out,
 232                       const unsigned char *in, size_t inl);
 233     /* cleanup ctx */
 234     int (*cleanup) (EVP_CIPHER_CTX *);
 235     /* how big ctx->cipher_data needs to be */
 236     int ctx_size;
 237     /* Populate a ASN1_TYPE with parameters */
 238     int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
 239     /* Get parameters from a ASN1_TYPE */
 240     int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
 241     /* Miscellaneous operations */
 242     int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr);
 243     /* Application data */
 244     void *app_data;
 245
 246     /* New structure members */
 247     /* TODO(3.0): Remove above comment when legacy has gone */
 248     OSSL_PROVIDER *prov;
 249     CRYPTO_REF_COUNT refcnt;
 250     CRYPTO_RWLOCK *lock;
 251     OSSL_OP_cipher_newctx_fn *newctx;
 252     OSSL_OP_cipher_encrypt_init_fn *einit;
 253     OSSL_OP_cipher_decrypt_init_fn *dinit;
 254     OSSL_OP_cipher_update_fn *cupdate;
 255     OSSL_OP_cipher_final_fn *cfinal;
 256     OSSL_OP_cipher_cipher_fn *ccipher;
 257     OSSL_OP_cipher_freectx_fn *freectx;
 258     OSSL_OP_cipher_dupctx_fn *dupctx;
 259     OSSL_OP_cipher_key_length_fn *key_length;
 260     OSSL_OP_cipher_iv_length_fn *iv_length;
 261     OSSL_OP_cipher_block_size_fn *blocksize;
 262     OSSL_OP_cipher_get_params_fn *get_params;
 263     OSSL_OP_cipher_ctx_get_params_fn *ctx_get_params;
 264     OSSL_OP_cipher_ctx_set_params_fn *ctx_set_params;
 265 } /* EVP_CIPHER */ ;
 266
 267 /* Macros to code block cipher wrappers */
 268
 269 /* Wrapper functions for each cipher mode */
 270
 271 #define EVP_C_DATA(kstruct, ctx) \
 272         ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx))
 273
 274 #define BLOCK_CIPHER_ecb_loop() \
 275         size_t i, bl; \
 276         bl = EVP_CIPHER_CTX_cipher(ctx)->block_size;    \
 277         if (inl < bl) return 1;\
 278         inl -= bl; \
 279         for (i=0; i <= inl; i+=bl)
 280
 281 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
 282 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 283 {\
 284         BLOCK_CIPHER_ecb_loop() \
 285             cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_encrypting(ctx)); \
 286         return 1;\
 287 }
 288
 289 #define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2))
 290
 291 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
 292     static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 293 {\
 294         while(inl>=EVP_MAXCHUNK) {\
 295             int num = EVP_CIPHER_CTX_num(ctx);\
 296             cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
 297             EVP_CIPHER_CTX_set_num(ctx, num);\
 298             inl-=EVP_MAXCHUNK;\
 299             in +=EVP_MAXCHUNK;\
 300             out+=EVP_MAXCHUNK;\
 301         }\
 302         if (inl) {\
 303             int num = EVP_CIPHER_CTX_num(ctx);\
 304             cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
 305             EVP_CIPHER_CTX_set_num(ctx, num);\
 306         }\
 307         return 1;\
 308 }
 309
 310 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
 311 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 312 {\
 313         while(inl>=EVP_MAXCHUNK) \
 314             {\
 315             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));\
 316             inl-=EVP_MAXCHUNK;\
 317             in +=EVP_MAXCHUNK;\
 318             out+=EVP_MAXCHUNK;\
 319             }\
 320         if (inl)\
 321             cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));\
 322         return 1;\
 323 }
 324
 325 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched)  \
 326 static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 327 {\
 328     size_t chunk = EVP_MAXCHUNK;\
 329     if (cbits == 1)  chunk >>= 3;\
 330     if (inl < chunk) chunk = inl;\
 331     while (inl && inl >= chunk)\
 332     {\
 333         int num = EVP_CIPHER_CTX_num(ctx);\
 334         cprefix##_cfb##cbits##_encrypt(in, out, (long) \
 335             ((cbits == 1) \
 336                 && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \
 337                 ? chunk*8 : chunk), \
 338             &EVP_C_DATA(kstruct, ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx),\
 339             &num, EVP_CIPHER_CTX_encrypting(ctx));\
 340         EVP_CIPHER_CTX_set_num(ctx, num);\
 341         inl -= chunk;\
 342         in += chunk;\
 343         out += chunk;\
 344         if (inl < chunk) chunk = inl;\
 345     }\
 346     return 1;\
 347 }
 348
 349 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 350         BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
 351         BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
 352         BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
 353         BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
 354
 355 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
 356                           key_len, iv_len, flags, init_key, cleanup, \
 357                           set_asn1, get_asn1, ctrl) \
 358 static const EVP_CIPHER cname##_##mode = { \
 359         nid##_##nmode, block_size, key_len, iv_len, \
 360         flags | EVP_CIPH_##MODE##_MODE, \
 361         init_key, \
 362         cname##_##mode##_cipher, \
 363         cleanup, \
 364         sizeof(kstruct), \
 365         set_asn1, get_asn1,\
 366         ctrl, \
 367         NULL \
 368 }; \
 369 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
 370
 371 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
 372                              iv_len, flags, init_key, cleanup, set_asn1, \
 373                              get_asn1, ctrl) \
 374 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
 375                   iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 376
 377 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
 378                              iv_len, cbits, flags, init_key, cleanup, \
 379                              set_asn1, get_asn1, ctrl) \
 380 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
 381                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 382                   get_asn1, ctrl)
 383
 384 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
 385                              iv_len, cbits, flags, init_key, cleanup, \
 386                              set_asn1, get_asn1, ctrl) \
 387 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
 388                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 389                   get_asn1, ctrl)
 390
 391 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
 392                              flags, init_key, cleanup, set_asn1, \
 393                              get_asn1, ctrl) \
 394 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
 395                   0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 396
 397 #define BLOCK_CIPHER_defs(cname, kstruct, \
 398                           nid, block_size, key_len, iv_len, cbits, flags, \
 399                           init_key, cleanup, set_asn1, get_asn1, ctrl) \
 400 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
 401                      init_key, cleanup, set_asn1, get_asn1, ctrl) \
 402 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
 403                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 404 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
 405                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 406 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
 407                      init_key, cleanup, set_asn1, get_asn1, ctrl)
 408
 409 /*-
 410 #define BLOCK_CIPHER_defs(cname, kstruct, \
 411                                 nid, block_size, key_len, iv_len, flags,\
 412                                  init_key, cleanup, set_asn1, get_asn1, ctrl)\
 413 static const EVP_CIPHER cname##_cbc = {\
 414         nid##_cbc, block_size, key_len, iv_len, \
 415         flags | EVP_CIPH_CBC_MODE,\
 416         init_key,\
 417         cname##_cbc_cipher,\
 418         cleanup,\
 419         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 420                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 421         set_asn1, get_asn1,\
 422         ctrl, \
 423         NULL \
 424 };\
 425 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
 426 static const EVP_CIPHER cname##_cfb = {\
 427         nid##_cfb64, 1, key_len, iv_len, \
 428         flags | EVP_CIPH_CFB_MODE,\
 429         init_key,\
 430         cname##_cfb_cipher,\
 431         cleanup,\
 432         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 433                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 434         set_asn1, get_asn1,\
 435         ctrl,\
 436         NULL \
 437 };\
 438 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
 439 static const EVP_CIPHER cname##_ofb = {\
 440         nid##_ofb64, 1, key_len, iv_len, \
 441         flags | EVP_CIPH_OFB_MODE,\
 442         init_key,\
 443         cname##_ofb_cipher,\
 444         cleanup,\
 445         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 446                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 447         set_asn1, get_asn1,\
 448         ctrl,\
 449         NULL \
 450 };\
 451 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
 452 static const EVP_CIPHER cname##_ecb = {\
 453         nid##_ecb, block_size, key_len, iv_len, \
 454         flags | EVP_CIPH_ECB_MODE,\
 455         init_key,\
 456         cname##_ecb_cipher,\
 457         cleanup,\
 458         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 459                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 460         set_asn1, get_asn1,\
 461         ctrl,\
 462         NULL \
 463 };\
 464 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
 465 */
 466
 467 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
 468                                block_size, key_len, iv_len, cbits, \
 469                                flags, init_key, \
 470                                cleanup, set_asn1, get_asn1, ctrl) \
 471         BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 472         BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
 473                           cbits, flags, init_key, cleanup, set_asn1, \
 474                           get_asn1, ctrl)
 475
 476 #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
 477         BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
 478         BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
 479                              NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
 480                              (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
 481                              cipher##_init_key, NULL, NULL, NULL, NULL)
 482
 483
 484 # ifndef OPENSSL_NO_EC
 485
 486 #define X25519_KEYLEN        32
 487 #define X448_KEYLEN          56
 488 #define ED448_KEYLEN         57
 489
 490 #define MAX_KEYLEN  ED448_KEYLEN
 491
 492 typedef struct {
 493     unsigned char pubkey[MAX_KEYLEN];
 494     unsigned char *privkey;
 495 } ECX_KEY;
 496
 497 #endif
 498
 499 /*
 500  * Type needs to be a bit field Sub-type needs to be for variations on the
 501  * method, as in, can it do arbitrary encryption....
 502  */
 503 struct evp_pkey_st {
 504     int type;
 505     int save_type;
 506     CRYPTO_REF_COUNT references;
 507     const EVP_PKEY_ASN1_METHOD *ameth;
 508     ENGINE *engine;
 509     ENGINE *pmeth_engine; /* If not NULL public key ENGINE to use */
 510     union {
 511         void *ptr;
 512 # ifndef OPENSSL_NO_RSA
 513         struct rsa_st *rsa;     /* RSA */
 514 # endif
 515 # ifndef OPENSSL_NO_DSA
 516         struct dsa_st *dsa;     /* DSA */
 517 # endif
 518 # ifndef OPENSSL_NO_DH
 519         struct dh_st *dh;       /* DH */
 520 # endif
 521 # ifndef OPENSSL_NO_EC
 522         struct ec_key_st *ec;   /* ECC */
 523         ECX_KEY *ecx;           /* X25519, X448, Ed25519, Ed448 */
 524 # endif
 525     } pkey;
 526     int save_parameters;
 527     STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
 528     CRYPTO_RWLOCK *lock;
 529 } /* EVP_PKEY */ ;
 530
 531
 532 void openssl_add_all_ciphers_int(void);
 533 void openssl_add_all_digests_int(void);
 534 void openssl_add_all_macs_int(void);
 535 void openssl_add_all_kdfs_int(void);
 536 void evp_cleanup_int(void);
 537 void evp_app_cleanup_int(void);
 538
 539 /* Pulling defines out of C source files */
 540
 541 #define EVP_RC4_KEY_SIZE 16
 542 #ifndef TLS1_1_VERSION
 543 # define TLS1_1_VERSION   0x0302
 544 #endif
 545
 546 void evp_encode_ctx_set_flags(EVP_ENCODE_CTX *ctx, unsigned int flags);
 547
 548 /* EVP_ENCODE_CTX flags */
 549 /* Don't generate new lines when encoding */
 550 #define EVP_ENCODE_CTX_NO_NEWLINES          1
 551 /* Use the SRP base64 alphabet instead of the standard one */
 552 #define EVP_ENCODE_CTX_USE_SRP_ALPHABET     2