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 "internal/refcount.h"
  12
  13 /*
  14  * Don't free up md_ctx->pctx in EVP_MD_CTX_reset, use the reserved flag
  15  * values in evp.h
  16  */
  17 #define EVP_MD_CTX_FLAG_KEEP_PKEY_CTX   0x0400
  18
  19 struct evp_pkey_ctx_st {
  20     /* Method associated with this operation */
  21     const EVP_PKEY_METHOD *pmeth;
  22     /* Engine that implements this method or NULL if builtin */
  23     ENGINE *engine;
  24     /* Key: may be NULL */
  25     EVP_PKEY *pkey;
  26     /* Peer key for key agreement, may be NULL */
  27     EVP_PKEY *peerkey;
  28     /* Actual operation */
  29     int operation;
  30     /* Algorithm specific data */
  31     void *data;
  32     /* Application specific data */
  33     void *app_data;
  34     /* Keygen callback */
  35     EVP_PKEY_gen_cb *pkey_gencb;
  36     /* implementation specific keygen data */
  37     int *keygen_info;
  38     int keygen_info_count;
  39 } /* EVP_PKEY_CTX */ ;
  40
  41 #define EVP_PKEY_FLAG_DYNAMIC   1
  42
  43 struct evp_pkey_method_st {
  44     int pkey_id;
  45     int flags;
  46     int (*init) (EVP_PKEY_CTX *ctx);
  47     int (*copy) (EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src);
  48     void (*cleanup) (EVP_PKEY_CTX *ctx);
  49     int (*paramgen_init) (EVP_PKEY_CTX *ctx);
  50     int (*paramgen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
  51     int (*keygen_init) (EVP_PKEY_CTX *ctx);
  52     int (*keygen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
  53     int (*sign_init) (EVP_PKEY_CTX *ctx);
  54     int (*sign) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
  55                  const unsigned char *tbs, size_t tbslen);
  56     int (*verify_init) (EVP_PKEY_CTX *ctx);
  57     int (*verify) (EVP_PKEY_CTX *ctx,
  58                    const unsigned char *sig, size_t siglen,
  59                    const unsigned char *tbs, size_t tbslen);
  60     int (*verify_recover_init) (EVP_PKEY_CTX *ctx);
  61     int (*verify_recover) (EVP_PKEY_CTX *ctx,
  62                            unsigned char *rout, size_t *routlen,
  63                            const unsigned char *sig, size_t siglen);
  64     int (*signctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
  65     int (*signctx) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
  66                     EVP_MD_CTX *mctx);
  67     int (*verifyctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
  68     int (*verifyctx) (EVP_PKEY_CTX *ctx, const unsigned char *sig, int siglen,
  69                       EVP_MD_CTX *mctx);
  70     int (*encrypt_init) (EVP_PKEY_CTX *ctx);
  71     int (*encrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
  72                     const unsigned char *in, size_t inlen);
  73     int (*decrypt_init) (EVP_PKEY_CTX *ctx);
  74     int (*decrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
  75                     const unsigned char *in, size_t inlen);
  76     int (*derive_init) (EVP_PKEY_CTX *ctx);
  77     int (*derive) (EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
  78     int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
  79     int (*ctrl_str) (EVP_PKEY_CTX *ctx, const char *type, const char *value);
  80     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
  81                        const unsigned char *tbs, size_t tbslen);
  82     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
  83                          size_t siglen, const unsigned char *tbs,
  84                          size_t tbslen);
  85     int (*check) (EVP_PKEY *pkey);
  86     int (*public_check) (EVP_PKEY *pkey);
  87     int (*param_check) (EVP_PKEY *pkey);
  88
  89     int (*digest_custom) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
  90 } /* EVP_PKEY_METHOD */ ;
  91
  92 DEFINE_STACK_OF_CONST(EVP_PKEY_METHOD)
  93
  94 void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx);
  95
  96 extern const EVP_PKEY_METHOD cmac_pkey_meth;
  97 extern const EVP_PKEY_METHOD dh_pkey_meth;
  98 extern const EVP_PKEY_METHOD dhx_pkey_meth;
  99 extern const EVP_PKEY_METHOD dsa_pkey_meth;
 100 extern const EVP_PKEY_METHOD ec_pkey_meth;
 101 extern const EVP_PKEY_METHOD sm2_pkey_meth;
 102 extern const EVP_PKEY_METHOD ecx25519_pkey_meth;
 103 extern const EVP_PKEY_METHOD ecx448_pkey_meth;
 104 extern const EVP_PKEY_METHOD ed25519_pkey_meth;
 105 extern const EVP_PKEY_METHOD ed448_pkey_meth;
 106 extern const EVP_PKEY_METHOD hmac_pkey_meth;
 107 extern const EVP_PKEY_METHOD rsa_pkey_meth;
 108 extern const EVP_PKEY_METHOD rsa_pss_pkey_meth;
 109 extern const EVP_PKEY_METHOD scrypt_pkey_meth;
 110 extern const EVP_PKEY_METHOD tls1_prf_pkey_meth;
 111 extern const EVP_PKEY_METHOD hkdf_pkey_meth;
 112 extern const EVP_PKEY_METHOD poly1305_pkey_meth;
 113 extern const EVP_PKEY_METHOD siphash_pkey_meth;
 114
 115 /* struct evp_mac_impl_st is defined by the implementation */
 116 typedef struct evp_mac_impl_st EVP_MAC_IMPL;
 117 struct evp_mac_st {
 118     int type;
 119     EVP_MAC_IMPL *(*new) (void);
 120     int (*copy) (EVP_MAC_IMPL *macdst, EVP_MAC_IMPL *macsrc);
 121     void (*free) (EVP_MAC_IMPL *macctx);
 122     size_t (*size) (EVP_MAC_IMPL *macctx);
 123     int (*init) (EVP_MAC_IMPL *macctx);
 124     int (*update) (EVP_MAC_IMPL *macctx, const unsigned char *data,
 125                    size_t datalen);
 126     int (*final) (EVP_MAC_IMPL *macctx, unsigned char *out);
 127     int (*ctrl) (EVP_MAC_IMPL *macctx, int cmd, va_list args);
 128     int (*ctrl_str) (EVP_MAC_IMPL *macctx, const char *type, const char *value);
 129 };
 130
 131 extern const EVP_MAC blake2b_mac_meth;
 132 extern const EVP_MAC blake2s_mac_meth;
 133 extern const EVP_MAC cmac_meth;
 134 extern const EVP_MAC gmac_meth;
 135 extern const EVP_MAC hmac_meth;
 136 extern const EVP_MAC kmac128_meth;
 137 extern const EVP_MAC kmac256_meth;
 138 extern const EVP_MAC siphash_meth;
 139 extern const EVP_MAC poly1305_meth;
 140
 141 /* Internal keccak algorithms used for KMAC */
 142 const EVP_MD *evp_keccak_kmac128(void);
 143 const EVP_MD *evp_keccak_kmac256(void);
 144
 145 /*
 146  * This function is internal for now, but can be made external when needed.
 147  * The documentation would read:
 148  *
 149  * EVP_add_mac() adds the MAC implementation C<mac> to the internal
 150  * object database.
 151  */
 152 int EVP_add_mac(const EVP_MAC *mac);
 153
 154 /* struct evp_kdf_impl_st is defined by the implementation */
 155 typedef struct evp_kdf_impl_st EVP_KDF_IMPL;
 156 typedef struct {
 157     int type;
 158     EVP_KDF_IMPL *(*new) (void);
 159     void (*free) (EVP_KDF_IMPL *impl);
 160     void (*reset) (EVP_KDF_IMPL *impl);
 161     int (*ctrl) (EVP_KDF_IMPL *impl, int cmd, va_list args);
 162     int (*ctrl_str) (EVP_KDF_IMPL *impl, const char *type, const char *value);
 163     size_t (*size) (EVP_KDF_IMPL *impl);
 164     int (*derive) (EVP_KDF_IMPL *impl, unsigned char *key, size_t keylen);
 165 } EVP_KDF_METHOD;
 166
 167 extern const EVP_KDF_METHOD pbkdf2_kdf_meth;
 168 extern const EVP_KDF_METHOD scrypt_kdf_meth;
 169 extern const EVP_KDF_METHOD tls1_prf_kdf_meth;
 170 extern const EVP_KDF_METHOD hkdf_kdf_meth;
 171
 172 struct evp_md_st {
 173     int type;
 174     int pkey_type;
 175     int md_size;
 176     unsigned long flags;
 177     int (*init) (EVP_MD_CTX *ctx);
 178     int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
 179     int (*final) (EVP_MD_CTX *ctx, unsigned char *md);
 180     int (*copy) (EVP_MD_CTX *to, const EVP_MD_CTX *from);
 181     int (*cleanup) (EVP_MD_CTX *ctx);
 182     int block_size;
 183     int ctx_size;               /* how big does the ctx->md_data need to be */
 184     /* control function */
 185     int (*md_ctrl) (EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
 186 } /* EVP_MD */ ;
 187
 188 struct evp_cipher_st {
 189     int nid;
 190     int block_size;
 191     /* Default value for variable length ciphers */
 192     int key_len;
 193     int iv_len;
 194     /* Various flags */
 195     unsigned long flags;
 196     /* init key */
 197     int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
 198                  const unsigned char *iv, int enc);
 199     /* encrypt/decrypt data */
 200     int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out,
 201                       const unsigned char *in, size_t inl);
 202     /* cleanup ctx */
 203     int (*cleanup) (EVP_CIPHER_CTX *);
 204     /* how big ctx->cipher_data needs to be */
 205     int ctx_size;
 206     /* Populate a ASN1_TYPE with parameters */
 207     int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
 208     /* Get parameters from a ASN1_TYPE */
 209     int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
 210     /* Miscellaneous operations */
 211     int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr);
 212     /* Application data */
 213     void *app_data;
 214 } /* EVP_CIPHER */ ;
 215
 216 /* Macros to code block cipher wrappers */
 217
 218 /* Wrapper functions for each cipher mode */
 219
 220 #define EVP_C_DATA(kstruct, ctx) \
 221         ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx))
 222
 223 #define BLOCK_CIPHER_ecb_loop() \
 224         size_t i, bl; \
 225         bl = EVP_CIPHER_CTX_cipher(ctx)->block_size;    \
 226         if (inl < bl) return 1;\
 227         inl -= bl; \
 228         for (i=0; i <= inl; i+=bl)
 229
 230 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
 231 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 232 {\
 233         BLOCK_CIPHER_ecb_loop() \
 234             cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_encrypting(ctx)); \
 235         return 1;\
 236 }
 237
 238 #define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2))
 239
 240 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
 241     static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 242 {\
 243         while(inl>=EVP_MAXCHUNK) {\
 244             int num = EVP_CIPHER_CTX_num(ctx);\
 245             cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
 246             EVP_CIPHER_CTX_set_num(ctx, num);\
 247             inl-=EVP_MAXCHUNK;\
 248             in +=EVP_MAXCHUNK;\
 249             out+=EVP_MAXCHUNK;\
 250         }\
 251         if (inl) {\
 252             int num = EVP_CIPHER_CTX_num(ctx);\
 253             cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
 254             EVP_CIPHER_CTX_set_num(ctx, num);\
 255         }\
 256         return 1;\
 257 }
 258
 259 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
 260 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 261 {\
 262         while(inl>=EVP_MAXCHUNK) \
 263             {\
 264             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));\
 265             inl-=EVP_MAXCHUNK;\
 266             in +=EVP_MAXCHUNK;\
 267             out+=EVP_MAXCHUNK;\
 268             }\
 269         if (inl)\
 270             cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));\
 271         return 1;\
 272 }
 273
 274 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched)  \
 275 static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 276 {\
 277     size_t chunk = EVP_MAXCHUNK;\
 278     if (cbits == 1)  chunk >>= 3;\
 279     if (inl < chunk) chunk = inl;\
 280     while (inl && inl >= chunk)\
 281     {\
 282         int num = EVP_CIPHER_CTX_num(ctx);\
 283         cprefix##_cfb##cbits##_encrypt(in, out, (long) \
 284             ((cbits == 1) \
 285                 && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \
 286                 ? chunk*8 : chunk), \
 287             &EVP_C_DATA(kstruct, ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx),\
 288             &num, EVP_CIPHER_CTX_encrypting(ctx));\
 289         EVP_CIPHER_CTX_set_num(ctx, num);\
 290         inl -= chunk;\
 291         in += chunk;\
 292         out += chunk;\
 293         if (inl < chunk) chunk = inl;\
 294     }\
 295     return 1;\
 296 }
 297
 298 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 299         BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
 300         BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
 301         BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
 302         BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
 303
 304 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
 305                           key_len, iv_len, flags, init_key, cleanup, \
 306                           set_asn1, get_asn1, ctrl) \
 307 static const EVP_CIPHER cname##_##mode = { \
 308         nid##_##nmode, block_size, key_len, iv_len, \
 309         flags | EVP_CIPH_##MODE##_MODE, \
 310         init_key, \
 311         cname##_##mode##_cipher, \
 312         cleanup, \
 313         sizeof(kstruct), \
 314         set_asn1, get_asn1,\
 315         ctrl, \
 316         NULL \
 317 }; \
 318 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
 319
 320 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
 321                              iv_len, flags, init_key, cleanup, set_asn1, \
 322                              get_asn1, ctrl) \
 323 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
 324                   iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 325
 326 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
 327                              iv_len, cbits, flags, init_key, cleanup, \
 328                              set_asn1, get_asn1, ctrl) \
 329 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
 330                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 331                   get_asn1, ctrl)
 332
 333 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
 334                              iv_len, cbits, flags, init_key, cleanup, \
 335                              set_asn1, get_asn1, ctrl) \
 336 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
 337                   key_len, iv_len, flags, init_key, cleanup, set_asn1, \
 338                   get_asn1, ctrl)
 339
 340 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
 341                              flags, init_key, cleanup, set_asn1, \
 342                              get_asn1, ctrl) \
 343 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
 344                   0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 345
 346 #define BLOCK_CIPHER_defs(cname, kstruct, \
 347                           nid, block_size, key_len, iv_len, cbits, flags, \
 348                           init_key, cleanup, set_asn1, get_asn1, ctrl) \
 349 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
 350                      init_key, cleanup, set_asn1, get_asn1, ctrl) \
 351 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
 352                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 353 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
 354                      flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 355 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
 356                      init_key, cleanup, set_asn1, get_asn1, ctrl)
 357
 358 /*-
 359 #define BLOCK_CIPHER_defs(cname, kstruct, \
 360                                 nid, block_size, key_len, iv_len, flags,\
 361                                  init_key, cleanup, set_asn1, get_asn1, ctrl)\
 362 static const EVP_CIPHER cname##_cbc = {\
 363         nid##_cbc, block_size, key_len, iv_len, \
 364         flags | EVP_CIPH_CBC_MODE,\
 365         init_key,\
 366         cname##_cbc_cipher,\
 367         cleanup,\
 368         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 369                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 370         set_asn1, get_asn1,\
 371         ctrl, \
 372         NULL \
 373 };\
 374 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
 375 static const EVP_CIPHER cname##_cfb = {\
 376         nid##_cfb64, 1, key_len, iv_len, \
 377         flags | EVP_CIPH_CFB_MODE,\
 378         init_key,\
 379         cname##_cfb_cipher,\
 380         cleanup,\
 381         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 382                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 383         set_asn1, get_asn1,\
 384         ctrl,\
 385         NULL \
 386 };\
 387 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
 388 static const EVP_CIPHER cname##_ofb = {\
 389         nid##_ofb64, 1, key_len, iv_len, \
 390         flags | EVP_CIPH_OFB_MODE,\
 391         init_key,\
 392         cname##_ofb_cipher,\
 393         cleanup,\
 394         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 395                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 396         set_asn1, get_asn1,\
 397         ctrl,\
 398         NULL \
 399 };\
 400 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
 401 static const EVP_CIPHER cname##_ecb = {\
 402         nid##_ecb, block_size, key_len, iv_len, \
 403         flags | EVP_CIPH_ECB_MODE,\
 404         init_key,\
 405         cname##_ecb_cipher,\
 406         cleanup,\
 407         sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
 408                 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
 409         set_asn1, get_asn1,\
 410         ctrl,\
 411         NULL \
 412 };\
 413 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
 414 */
 415
 416 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
 417                                block_size, key_len, iv_len, cbits, \
 418                                flags, init_key, \
 419                                cleanup, set_asn1, get_asn1, ctrl) \
 420         BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
 421         BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
 422                           cbits, flags, init_key, cleanup, set_asn1, \
 423                           get_asn1, ctrl)
 424
 425 #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
 426         BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
 427         BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
 428                              NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
 429                              (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
 430                              cipher##_init_key, NULL, NULL, NULL, NULL)
 431
 432
 433 # ifndef OPENSSL_NO_EC
 434
 435 #define X25519_KEYLEN        32
 436 #define X448_KEYLEN          56
 437 #define ED448_KEYLEN         57
 438
 439 #define MAX_KEYLEN  ED448_KEYLEN
 440
 441 typedef struct {
 442     unsigned char pubkey[MAX_KEYLEN];
 443     unsigned char *privkey;
 444 } ECX_KEY;
 445
 446 #endif
 447
 448 /*
 449  * Type needs to be a bit field Sub-type needs to be for variations on the
 450  * method, as in, can it do arbitrary encryption....
 451  */
 452 struct evp_pkey_st {
 453     int type;
 454     int save_type;
 455     CRYPTO_REF_COUNT references;
 456     const EVP_PKEY_ASN1_METHOD *ameth;
 457     ENGINE *engine;
 458     ENGINE *pmeth_engine; /* If not NULL public key ENGINE to use */
 459     union {
 460         void *ptr;
 461 # ifndef OPENSSL_NO_RSA
 462         struct rsa_st *rsa;     /* RSA */
 463 # endif
 464 # ifndef OPENSSL_NO_DSA
 465         struct dsa_st *dsa;     /* DSA */
 466 # endif
 467 # ifndef OPENSSL_NO_DH
 468         struct dh_st *dh;       /* DH */
 469 # endif
 470 # ifndef OPENSSL_NO_EC
 471         struct ec_key_st *ec;   /* ECC */
 472         ECX_KEY *ecx;           /* X25519, X448, Ed25519, Ed448 */
 473 # endif
 474     } pkey;
 475     int save_parameters;
 476     STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
 477     CRYPTO_RWLOCK *lock;
 478 } /* EVP_PKEY */ ;
 479
 480
 481 void openssl_add_all_ciphers_int(void);
 482 void openssl_add_all_digests_int(void);
 483 void openssl_add_all_macs_int(void);
 484 void evp_cleanup_int(void);
 485 void evp_app_cleanup_int(void);
 486
 487 /* Pulling defines out of C source files */
 488
 489 #define EVP_RC4_KEY_SIZE 16
 490 #ifndef TLS1_1_VERSION
 491 # define TLS1_1_VERSION   0x0302
 492 #endif
 493
 494 void evp_encode_ctx_set_flags(EVP_ENCODE_CTX *ctx, unsigned int flags);
 495
 496 /* EVP_ENCODE_CTX flags */
 497 /* Don't generate new lines when encoding */
 498 #define EVP_ENCODE_CTX_NO_NEWLINES          1
 499 /* Use the SRP base64 alphabet instead of the standard one */
 500 #define EVP_ENCODE_CTX_USE_SRP_ALPHABET     2