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_freectx_fn *freectx;
 253     OSSL_OP_cipher_dupctx_fn *dupctx;
 254     OSSL_OP_cipher_key_length_fn *key_length;
 255     OSSL_OP_cipher_get_params_fn *get_params;
 256     OSSL_OP_cipher_get_params_fn *set_params;
 257 } /* EVP_CIPHER */ ;
 258
 259 /* Macros to code block cipher wrappers */
 260
 261 /* Wrapper functions for each cipher mode */
 262
 263 #define EVP_C_DATA(kstruct, ctx) \
 264         ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx))
 265
 266 #define BLOCK_CIPHER_ecb_loop() \
 267         size_t i, bl; \
 268         bl = EVP_CIPHER_CTX_cipher(ctx)->block_size;    \
 269         if (inl < bl) return 1;\
 270         inl -= bl; \
 271         for (i=0; i <= inl; i+=bl)
 272
 273 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
 274 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 275 {\
 276         BLOCK_CIPHER_ecb_loop() \
 277             cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_encrypting(ctx)); \
 278         return 1;\
 279 }
 280
 281 #define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2))
 282
 283 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
 284     static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 285 {\
 286         while(inl>=EVP_MAXCHUNK) {\
 287             int num = EVP_CIPHER_CTX_num(ctx);\
 288             cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
 289             EVP_CIPHER_CTX_set_num(ctx, num);\
 290             inl-=EVP_MAXCHUNK;\
 291             in +=EVP_MAXCHUNK;\
 292             out+=EVP_MAXCHUNK;\
 293         }\
 294         if (inl) {\
 295             int num = EVP_CIPHER_CTX_num(ctx);\
 296             cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
 297             EVP_CIPHER_CTX_set_num(ctx, num);\
 298         }\
 299         return 1;\
 300 }
 301
 302 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
 303 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 304 {\
 305         while(inl>=EVP_MAXCHUNK) \
 306             {\
 307             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));\
 308             inl-=EVP_MAXCHUNK;\
 309             in +=EVP_MAXCHUNK;\
 310             out+=EVP_MAXCHUNK;\
 311             }\
 312         if (inl)\
 313             cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));\
 314         return 1;\
 315 }
 316
 317 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched)  \
 318 static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 319 {\
 320     size_t chunk = EVP_MAXCHUNK;\
 321     if (cbits == 1)  chunk >>= 3;\
 322     if (inl < chunk) chunk = inl;\
 323     while (inl && inl >= chunk)\
 324     {\
 325         int num = EVP_CIPHER_CTX_num(ctx);\
 326         cprefix##_cfb##cbits##_encrypt(in, out, (long) \
 327             ((cbits == 1) \
 328                 && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \
 329                 ? chunk*8 : chunk), \
 330             &EVP_C_DATA(kstruct, ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx),\
 331             &num, EVP_CIPHER_CTX_encrypting(ctx));\
 332         EVP_CIPHER_CTX_set_num(ctx, num);\
 333         inl -= chunk;\
 334         in += chunk;\
 335         out += chunk;\
 336         if (inl < chunk) chunk = inl;\
 337     }\
 338     return 1;\
 339 }
 340
 341 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 342         BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
 343         BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
 344         BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
 345         BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
 346
 347 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
 348                           key_len, iv_len, flags, init_key, cleanup, \
 349                           set_asn1, get_asn1, ctrl) \
 350 static const EVP_CIPHER cname##_##mode = { \
 351         nid##_##nmode, block_size, key_len, iv_len, \
 352         flags | EVP_CIPH_##MODE##_MODE, \
 353         init_key, \
 354         cname##_##mode##_cipher, \
 355         cleanup, \
 356         sizeof(kstruct), \
 357         set_asn1, get_asn1,\
 358         ctrl, \
 359         NULL \
 360 }; \
 361 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
 362
 363 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
 364                              iv_len, flags, init_key, cleanup, set_asn1, \
 365                              get_asn1, ctrl) \
 366 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
 367                   iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 368
 369 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
 370                              iv_len, cbits, flags, init_key, cleanup, \
 371                              set_asn1, get_asn1, ctrl) \
 372 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
 373                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 374                   get_asn1, ctrl)
 375
 376 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
 377                              iv_len, cbits, flags, init_key, cleanup, \
 378                              set_asn1, get_asn1, ctrl) \
 379 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
 380                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 381                   get_asn1, ctrl)
 382
 383 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
 384                              flags, init_key, cleanup, set_asn1, \
 385                              get_asn1, ctrl) \
 386 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
 387                   0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 388
 389 #define BLOCK_CIPHER_defs(cname, kstruct, \
 390                           nid, block_size, key_len, iv_len, cbits, flags, \
 391                           init_key, cleanup, set_asn1, get_asn1, ctrl) \
 392 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
 393                      init_key, cleanup, set_asn1, get_asn1, ctrl) \
 394 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
 395                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 396 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
 397                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 398 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
 399                      init_key, cleanup, set_asn1, get_asn1, ctrl)
 400
 401 /*-
 402 #define BLOCK_CIPHER_defs(cname, kstruct, \
 403                                 nid, block_size, key_len, iv_len, flags,\
 404                                  init_key, cleanup, set_asn1, get_asn1, ctrl)\
 405 static const EVP_CIPHER cname##_cbc = {\
 406         nid##_cbc, block_size, key_len, iv_len, \
 407         flags | EVP_CIPH_CBC_MODE,\
 408         init_key,\
 409         cname##_cbc_cipher,\
 410         cleanup,\
 411         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 412                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 413         set_asn1, get_asn1,\
 414         ctrl, \
 415         NULL \
 416 };\
 417 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
 418 static const EVP_CIPHER cname##_cfb = {\
 419         nid##_cfb64, 1, key_len, iv_len, \
 420         flags | EVP_CIPH_CFB_MODE,\
 421         init_key,\
 422         cname##_cfb_cipher,\
 423         cleanup,\
 424         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 425                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 426         set_asn1, get_asn1,\
 427         ctrl,\
 428         NULL \
 429 };\
 430 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
 431 static const EVP_CIPHER cname##_ofb = {\
 432         nid##_ofb64, 1, key_len, iv_len, \
 433         flags | EVP_CIPH_OFB_MODE,\
 434         init_key,\
 435         cname##_ofb_cipher,\
 436         cleanup,\
 437         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 438                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 439         set_asn1, get_asn1,\
 440         ctrl,\
 441         NULL \
 442 };\
 443 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
 444 static const EVP_CIPHER cname##_ecb = {\
 445         nid##_ecb, block_size, key_len, iv_len, \
 446         flags | EVP_CIPH_ECB_MODE,\
 447         init_key,\
 448         cname##_ecb_cipher,\
 449         cleanup,\
 450         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 451                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 452         set_asn1, get_asn1,\
 453         ctrl,\
 454         NULL \
 455 };\
 456 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
 457 */
 458
 459 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
 460                                block_size, key_len, iv_len, cbits, \
 461                                flags, init_key, \
 462                                cleanup, set_asn1, get_asn1, ctrl) \
 463         BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 464         BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
 465                           cbits, flags, init_key, cleanup, set_asn1, \
 466                           get_asn1, ctrl)
 467
 468 #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
 469         BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
 470         BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
 471                              NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
 472                              (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
 473                              cipher##_init_key, NULL, NULL, NULL, NULL)
 474
 475
 476 # ifndef OPENSSL_NO_EC
 477
 478 #define X25519_KEYLEN        32
 479 #define X448_KEYLEN          56
 480 #define ED448_KEYLEN         57
 481
 482 #define MAX_KEYLEN  ED448_KEYLEN
 483
 484 typedef struct {
 485     unsigned char pubkey[MAX_KEYLEN];
 486     unsigned char *privkey;
 487 } ECX_KEY;
 488
 489 #endif
 490
 491 /*
 492  * Type needs to be a bit field Sub-type needs to be for variations on the
 493  * method, as in, can it do arbitrary encryption....
 494  */
 495 struct evp_pkey_st {
 496     int type;
 497     int save_type;
 498     CRYPTO_REF_COUNT references;
 499     const EVP_PKEY_ASN1_METHOD *ameth;
 500     ENGINE *engine;
 501     ENGINE *pmeth_engine; /* If not NULL public key ENGINE to use */
 502     union {
 503         void *ptr;
 504 # ifndef OPENSSL_NO_RSA
 505         struct rsa_st *rsa;     /* RSA */
 506 # endif
 507 # ifndef OPENSSL_NO_DSA
 508         struct dsa_st *dsa;     /* DSA */
 509 # endif
 510 # ifndef OPENSSL_NO_DH
 511         struct dh_st *dh;       /* DH */
 512 # endif
 513 # ifndef OPENSSL_NO_EC
 514         struct ec_key_st *ec;   /* ECC */
 515         ECX_KEY *ecx;           /* X25519, X448, Ed25519, Ed448 */
 516 # endif
 517     } pkey;
 518     int save_parameters;
 519     STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
 520     CRYPTO_RWLOCK *lock;
 521 } /* EVP_PKEY */ ;
 522
 523
 524 void openssl_add_all_ciphers_int(void);
 525 void openssl_add_all_digests_int(void);
 526 void openssl_add_all_macs_int(void);
 527 void evp_cleanup_int(void);
 528 void evp_app_cleanup_int(void);
 529
 530 /* Pulling defines out of C source files */
 531
 532 #define EVP_RC4_KEY_SIZE 16
 533 #ifndef TLS1_1_VERSION
 534 # define TLS1_1_VERSION   0x0302
 535 #endif
 536
 537 void evp_encode_ctx_set_flags(EVP_ENCODE_CTX *ctx, unsigned int flags);
 538
 539 /* EVP_ENCODE_CTX flags */
 540 /* Don't generate new lines when encoding */
 541 #define EVP_ENCODE_CTX_NO_NEWLINES          1
 542 /* Use the SRP base64 alphabet instead of the standard one */
 543 #define EVP_ENCODE_CTX_USE_SRP_ALPHABET     2