1 /* 2 * Copyright 2002-2023 The OpenSSL Project Authors. All Rights Reserved. 3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved 4 * 5 * Licensed under the Apache License 2.0 (the "License"). You may not use 6 * this file except in compliance with the License. You can obtain a copy 7 * in the file LICENSE in the source distribution or at 8 * https://www.openssl.org/source/license.html 9 */ 10 11 #ifndef OPENSSL_EC_H 12 # define OPENSSL_EC_H 13 # pragma once 14 15 # include <openssl/macros.h> 16 # ifndef OPENSSL_NO_DEPRECATED_3_0 17 # define HEADER_EC_H 18 # endif 19 20 # include <openssl/opensslconf.h> 21 # include <openssl/types.h> 22 23 # include <string.h> 24 25 # ifdef __cplusplus 26 extern "C" { 27 # endif 28 29 /* Values for EVP_PKEY_CTX_set_ec_param_enc() */ 30 # define OPENSSL_EC_EXPLICIT_CURVE 0x000 31 # define OPENSSL_EC_NAMED_CURVE 0x001 32 33 int EVP_PKEY_CTX_set_ec_paramgen_curve_nid(EVP_PKEY_CTX *ctx, int nid); 34 int EVP_PKEY_CTX_set_ec_param_enc(EVP_PKEY_CTX *ctx, int param_enc); 35 int EVP_PKEY_CTX_set_ecdh_cofactor_mode(EVP_PKEY_CTX *ctx, int cofactor_mode); 36 int EVP_PKEY_CTX_get_ecdh_cofactor_mode(EVP_PKEY_CTX *ctx); 37 38 int EVP_PKEY_CTX_set_ecdh_kdf_type(EVP_PKEY_CTX *ctx, int kdf); 39 int EVP_PKEY_CTX_get_ecdh_kdf_type(EVP_PKEY_CTX *ctx); 40 41 int EVP_PKEY_CTX_set_ecdh_kdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md); 42 int EVP_PKEY_CTX_get_ecdh_kdf_md(EVP_PKEY_CTX *ctx, const EVP_MD **md); 43 44 int EVP_PKEY_CTX_set_ecdh_kdf_outlen(EVP_PKEY_CTX *ctx, int len); 45 int EVP_PKEY_CTX_get_ecdh_kdf_outlen(EVP_PKEY_CTX *ctx, int *len); 46 47 int EVP_PKEY_CTX_set0_ecdh_kdf_ukm(EVP_PKEY_CTX *ctx, unsigned char *ukm, 48 int len); 49 # ifndef OPENSSL_NO_DEPRECATED_3_0 50 OSSL_DEPRECATEDIN_3_0 51 int EVP_PKEY_CTX_get0_ecdh_kdf_ukm(EVP_PKEY_CTX *ctx, unsigned char **ukm); 52 # endif 53 54 # define EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID (EVP_PKEY_ALG_CTRL + 1) 55 # define EVP_PKEY_CTRL_EC_PARAM_ENC (EVP_PKEY_ALG_CTRL + 2) 56 # define EVP_PKEY_CTRL_EC_ECDH_COFACTOR (EVP_PKEY_ALG_CTRL + 3) 57 # define EVP_PKEY_CTRL_EC_KDF_TYPE (EVP_PKEY_ALG_CTRL + 4) 58 # define EVP_PKEY_CTRL_EC_KDF_MD (EVP_PKEY_ALG_CTRL + 5) 59 # define EVP_PKEY_CTRL_GET_EC_KDF_MD (EVP_PKEY_ALG_CTRL + 6) 60 # define EVP_PKEY_CTRL_EC_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 7) 61 # define EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 8) 62 # define EVP_PKEY_CTRL_EC_KDF_UKM (EVP_PKEY_ALG_CTRL + 9) 63 # define EVP_PKEY_CTRL_GET_EC_KDF_UKM (EVP_PKEY_ALG_CTRL + 10) 64 65 /* KDF types */ 66 # define EVP_PKEY_ECDH_KDF_NONE 1 67 # define EVP_PKEY_ECDH_KDF_X9_63 2 68 /* 69 * The old name for EVP_PKEY_ECDH_KDF_X9_63 70 * The ECDH KDF specification has been mistakenly attributed to ANSI X9.62, 71 * it is actually specified in ANSI X9.63. 72 * This identifier is retained for backwards compatibility 73 */ 74 # define EVP_PKEY_ECDH_KDF_X9_62 EVP_PKEY_ECDH_KDF_X9_63 75 76 /** Enum for the point conversion form as defined in X9.62 (ECDSA) 77 * for the encoding of a elliptic curve point (x,y) */ 78 typedef enum { 79 /** the point is encoded as z||x, where the octet z specifies 80 * which solution of the quadratic equation y is */ 81 POINT_CONVERSION_COMPRESSED = 2, 82 /** the point is encoded as z||x||y, where z is the octet 0x04 */ 83 POINT_CONVERSION_UNCOMPRESSED = 4, 84 /** the point is encoded as z||x||y, where the octet z specifies 85 * which solution of the quadratic equation y is */ 86 POINT_CONVERSION_HYBRID = 6 87 } point_conversion_form_t; 88 89 const char *OSSL_EC_curve_nid2name(int nid); 90 91 # ifndef OPENSSL_NO_STDIO 92 # include <stdio.h> 93 # endif 94 # ifndef OPENSSL_NO_EC 95 # include <openssl/asn1.h> 96 # include <openssl/symhacks.h> 97 # ifndef OPENSSL_NO_DEPRECATED_1_1_0 98 # include <openssl/bn.h> 99 # endif 100 # include <openssl/ecerr.h> 101 102 # ifndef OPENSSL_ECC_MAX_FIELD_BITS 103 # define OPENSSL_ECC_MAX_FIELD_BITS 661 104 # endif 105 106 # include <openssl/params.h> 107 # ifndef OPENSSL_NO_DEPRECATED_3_0 108 typedef struct ec_method_st EC_METHOD; 109 # endif 110 typedef struct ec_group_st EC_GROUP; 111 typedef struct ec_point_st EC_POINT; 112 typedef struct ecpk_parameters_st ECPKPARAMETERS; 113 typedef struct ec_parameters_st ECPARAMETERS; 114 115 /********************************************************************/ 116 /* EC_METHODs for curves over GF(p) */ 117 /********************************************************************/ 118 119 # ifndef OPENSSL_NO_DEPRECATED_3_0 120 /** Returns the basic GFp ec methods which provides the basis for the 121 * optimized methods. 122 * \return EC_METHOD object 123 */ 124 OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_simple_method(void); 125 126 /** Returns GFp methods using montgomery multiplication. 127 * \return EC_METHOD object 128 */ 129 OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_mont_method(void); 130 131 /** Returns GFp methods using optimized methods for NIST recommended curves 132 * \return EC_METHOD object 133 */ 134 OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nist_method(void); 135 136 # ifndef OPENSSL_NO_EC_NISTP_64_GCC_128 137 /** Returns 64-bit optimized methods for nistp224 138 * \return EC_METHOD object 139 */ 140 OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nistp224_method(void); 141 142 /** Returns 64-bit optimized methods for nistp256 143 * \return EC_METHOD object 144 */ 145 OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nistp256_method(void); 146 147 /** Returns 64-bit optimized methods for nistp521 148 * \return EC_METHOD object 149 */ 150 OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GFp_nistp521_method(void); 151 # endif /* OPENSSL_NO_EC_NISTP_64_GCC_128 */ 152 153 # ifndef OPENSSL_NO_EC2M 154 /********************************************************************/ 155 /* EC_METHOD for curves over GF(2^m) */ 156 /********************************************************************/ 157 158 /** Returns the basic GF2m ec method 159 * \return EC_METHOD object 160 */ 161 OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GF2m_simple_method(void); 162 163 # endif 164 165 /********************************************************************/ 166 /* EC_GROUP functions */ 167 /********************************************************************/ 168 169 /** 170 * Creates a new EC_GROUP object 171 * \param meth EC_METHOD to use 172 * \return newly created EC_GROUP object or NULL in case of an error. 173 */ 174 OSSL_DEPRECATEDIN_3_0 EC_GROUP *EC_GROUP_new(const EC_METHOD *meth); 175 176 /** Clears and frees a EC_GROUP object 177 * \param group EC_GROUP object to be cleared and freed. 178 */ 179 OSSL_DEPRECATEDIN_3_0 void EC_GROUP_clear_free(EC_GROUP *group); 180 181 /** Returns the EC_METHOD of the EC_GROUP object. 182 * \param group EC_GROUP object 183 * \return EC_METHOD used in this EC_GROUP object. 184 */ 185 OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group); 186 187 /** Returns the field type of the EC_METHOD. 188 * \param meth EC_METHOD object 189 * \return NID of the underlying field type OID. 190 */ 191 OSSL_DEPRECATEDIN_3_0 int EC_METHOD_get_field_type(const EC_METHOD *meth); 192 # endif /* OPENSSL_NO_DEPRECATED_3_0 */ 193 194 /** Frees a EC_GROUP object 195 * \param group EC_GROUP object to be freed. 196 */ 197 void EC_GROUP_free(EC_GROUP *group); 198 199 /** Copies EC_GROUP objects. Note: both EC_GROUPs must use the same EC_METHOD. 200 * \param dst destination EC_GROUP object 201 * \param src source EC_GROUP object 202 * \return 1 on success and 0 if an error occurred. 203 */ 204 int EC_GROUP_copy(EC_GROUP *dst, const EC_GROUP *src); 205 206 /** Creates a new EC_GROUP object and copies the content 207 * form src to the newly created EC_KEY object 208 * \param src source EC_GROUP object 209 * \return newly created EC_GROUP object or NULL in case of an error. 210 */ 211 EC_GROUP *EC_GROUP_dup(const EC_GROUP *src); 212 213 /** Sets the generator and its order/cofactor of a EC_GROUP object. 214 * \param group EC_GROUP object 215 * \param generator EC_POINT object with the generator. 216 * \param order the order of the group generated by the generator. 217 * \param cofactor the index of the sub-group generated by the generator 218 * in the group of all points on the elliptic curve. 219 * \return 1 on success and 0 if an error occurred 220 */ 221 int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator, 222 const BIGNUM *order, const BIGNUM *cofactor); 223 224 /** Returns the generator of a EC_GROUP object. 225 * \param group EC_GROUP object 226 * \return the currently used generator (possibly NULL). 227 */ 228 const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group); 229 230 /** Returns the montgomery data for order(Generator) 231 * \param group EC_GROUP object 232 * \return the currently used montgomery data (possibly NULL). 233 */ 234 BN_MONT_CTX *EC_GROUP_get_mont_data(const EC_GROUP *group); 235 236 /** Gets the order of a EC_GROUP 237 * \param group EC_GROUP object 238 * \param order BIGNUM to which the order is copied 239 * \param ctx unused 240 * \return 1 on success and 0 if an error occurred 241 */ 242 int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx); 243 244 /** Gets the order of an EC_GROUP 245 * \param group EC_GROUP object 246 * \return the group order 247 */ 248 const BIGNUM *EC_GROUP_get0_order(const EC_GROUP *group); 249 250 /** Gets the number of bits of the order of an EC_GROUP 251 * \param group EC_GROUP object 252 * \return number of bits of group order. 253 */ 254 int EC_GROUP_order_bits(const EC_GROUP *group); 255 256 /** Gets the cofactor of a EC_GROUP 257 * \param group EC_GROUP object 258 * \param cofactor BIGNUM to which the cofactor is copied 259 * \param ctx unused 260 * \return 1 on success and 0 if an error occurred 261 */ 262 int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor, 263 BN_CTX *ctx); 264 265 /** Gets the cofactor of an EC_GROUP 266 * \param group EC_GROUP object 267 * \return the group cofactor 268 */ 269 const BIGNUM *EC_GROUP_get0_cofactor(const EC_GROUP *group); 270 271 /** Sets the name of a EC_GROUP object 272 * \param group EC_GROUP object 273 * \param nid NID of the curve name OID 274 */ 275 void EC_GROUP_set_curve_name(EC_GROUP *group, int nid); 276 277 /** Returns the curve name of a EC_GROUP object 278 * \param group EC_GROUP object 279 * \return NID of the curve name OID or 0 if not set. 280 */ 281 int EC_GROUP_get_curve_name(const EC_GROUP *group); 282 283 /** Gets the field of an EC_GROUP 284 * \param group EC_GROUP object 285 * \return the group field 286 */ 287 const BIGNUM *EC_GROUP_get0_field(const EC_GROUP *group); 288 289 /** Returns the field type of the EC_GROUP. 290 * \param group EC_GROUP object 291 * \return NID of the underlying field type OID. 292 */ 293 int EC_GROUP_get_field_type(const EC_GROUP *group); 294 295 void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag); 296 int EC_GROUP_get_asn1_flag(const EC_GROUP *group); 297 298 void EC_GROUP_set_point_conversion_form(EC_GROUP *group, 299 point_conversion_form_t form); 300 point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *); 301 302 unsigned char *EC_GROUP_get0_seed(const EC_GROUP *x); 303 size_t EC_GROUP_get_seed_len(const EC_GROUP *); 304 size_t EC_GROUP_set_seed(EC_GROUP *, const unsigned char *, size_t len); 305 306 /** Sets the parameters of an ec curve defined by y^2 = x^3 + a*x + b (for GFp) 307 * or y^2 + x*y = x^3 + a*x^2 + b (for GF2m) 308 * \param group EC_GROUP object 309 * \param p BIGNUM with the prime number (GFp) or the polynomial 310 * defining the underlying field (GF2m) 311 * \param a BIGNUM with parameter a of the equation 312 * \param b BIGNUM with parameter b of the equation 313 * \param ctx BN_CTX object (optional) 314 * \return 1 on success and 0 if an error occurred 315 */ 316 int EC_GROUP_set_curve(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, 317 const BIGNUM *b, BN_CTX *ctx); 318 319 /** Gets the parameters of the ec curve defined by y^2 = x^3 + a*x + b (for GFp) 320 * or y^2 + x*y = x^3 + a*x^2 + b (for GF2m) 321 * \param group EC_GROUP object 322 * \param p BIGNUM with the prime number (GFp) or the polynomial 323 * defining the underlying field (GF2m) 324 * \param a BIGNUM for parameter a of the equation 325 * \param b BIGNUM for parameter b of the equation 326 * \param ctx BN_CTX object (optional) 327 * \return 1 on success and 0 if an error occurred 328 */ 329 int EC_GROUP_get_curve(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, BIGNUM *b, 330 BN_CTX *ctx); 331 332 # ifndef OPENSSL_NO_DEPRECATED_3_0 333 /** Sets the parameters of an ec curve. Synonym for EC_GROUP_set_curve 334 * \param group EC_GROUP object 335 * \param p BIGNUM with the prime number (GFp) or the polynomial 336 * defining the underlying field (GF2m) 337 * \param a BIGNUM with parameter a of the equation 338 * \param b BIGNUM with parameter b of the equation 339 * \param ctx BN_CTX object (optional) 340 * \return 1 on success and 0 if an error occurred 341 */ 342 OSSL_DEPRECATEDIN_3_0 int EC_GROUP_set_curve_GFp(EC_GROUP *group, 343 const BIGNUM *p, 344 const BIGNUM *a, 345 const BIGNUM *b, 346 BN_CTX *ctx); 347 348 /** Gets the parameters of an ec curve. Synonym for EC_GROUP_get_curve 349 * \param group EC_GROUP object 350 * \param p BIGNUM with the prime number (GFp) or the polynomial 351 * defining the underlying field (GF2m) 352 * \param a BIGNUM for parameter a of the equation 353 * \param b BIGNUM for parameter b of the equation 354 * \param ctx BN_CTX object (optional) 355 * \return 1 on success and 0 if an error occurred 356 */ 357 OSSL_DEPRECATEDIN_3_0 int EC_GROUP_get_curve_GFp(const EC_GROUP *group, 358 BIGNUM *p, 359 BIGNUM *a, BIGNUM *b, 360 BN_CTX *ctx); 361 362 # ifndef OPENSSL_NO_EC2M 363 /** Sets the parameter of an ec curve. Synonym for EC_GROUP_set_curve 364 * \param group EC_GROUP object 365 * \param p BIGNUM with the prime number (GFp) or the polynomial 366 * defining the underlying field (GF2m) 367 * \param a BIGNUM with parameter a of the equation 368 * \param b BIGNUM with parameter b of the equation 369 * \param ctx BN_CTX object (optional) 370 * \return 1 on success and 0 if an error occurred 371 */ 372 OSSL_DEPRECATEDIN_3_0 int EC_GROUP_set_curve_GF2m(EC_GROUP *group, 373 const BIGNUM *p, 374 const BIGNUM *a, 375 const BIGNUM *b, 376 BN_CTX *ctx); 377 378 /** Gets the parameters of an ec curve. Synonym for EC_GROUP_get_curve 379 * \param group EC_GROUP object 380 * \param p BIGNUM with the prime number (GFp) or the polynomial 381 * defining the underlying field (GF2m) 382 * \param a BIGNUM for parameter a of the equation 383 * \param b BIGNUM for parameter b of the equation 384 * \param ctx BN_CTX object (optional) 385 * \return 1 on success and 0 if an error occurred 386 */ 387 OSSL_DEPRECATEDIN_3_0 int EC_GROUP_get_curve_GF2m(const EC_GROUP *group, 388 BIGNUM *p, 389 BIGNUM *a, BIGNUM *b, 390 BN_CTX *ctx); 391 # endif /* OPENSSL_NO_EC2M */ 392 # endif /* OPENSSL_NO_DEPRECATED_3_0 */ 393 394 /** Returns the number of bits needed to represent a field element 395 * \param group EC_GROUP object 396 * \return number of bits needed to represent a field element 397 */ 398 int EC_GROUP_get_degree(const EC_GROUP *group); 399 400 /** Checks whether the parameter in the EC_GROUP define a valid ec group 401 * \param group EC_GROUP object 402 * \param ctx BN_CTX object (optional) 403 * \return 1 if group is a valid ec group and 0 otherwise 404 */ 405 int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx); 406 407 /** Checks whether the discriminant of the elliptic curve is zero or not 408 * \param group EC_GROUP object 409 * \param ctx BN_CTX object (optional) 410 * \return 1 if the discriminant is not zero and 0 otherwise 411 */ 412 int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx); 413 414 /** Compares two EC_GROUP objects 415 * \param a first EC_GROUP object 416 * \param b second EC_GROUP object 417 * \param ctx BN_CTX object (optional) 418 * \return 0 if the groups are equal, 1 if not, or -1 on error 419 */ 420 int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ctx); 421 422 /* 423 * EC_GROUP_new_GF*() calls EC_GROUP_new() and EC_GROUP_set_GF*() after 424 * choosing an appropriate EC_METHOD 425 */ 426 427 /** Creates a new EC_GROUP object with the specified parameters defined 428 * over GFp (defined by the equation y^2 = x^3 + a*x + b) 429 * \param p BIGNUM with the prime number 430 * \param a BIGNUM with the parameter a of the equation 431 * \param b BIGNUM with the parameter b of the equation 432 * \param ctx BN_CTX object (optional) 433 * \return newly created EC_GROUP object with the specified parameters 434 */ 435 EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a, 436 const BIGNUM *b, BN_CTX *ctx); 437 # ifndef OPENSSL_NO_EC2M 438 /** Creates a new EC_GROUP object with the specified parameters defined 439 * over GF2m (defined by the equation y^2 + x*y = x^3 + a*x^2 + b) 440 * \param p BIGNUM with the polynomial defining the underlying field 441 * \param a BIGNUM with the parameter a of the equation 442 * \param b BIGNUM with the parameter b of the equation 443 * \param ctx BN_CTX object (optional) 444 * \return newly created EC_GROUP object with the specified parameters 445 */ 446 EC_GROUP *EC_GROUP_new_curve_GF2m(const BIGNUM *p, const BIGNUM *a, 447 const BIGNUM *b, BN_CTX *ctx); 448 # endif 449 450 /** 451 * Creates a EC_GROUP object with a curve specified by parameters. 452 * The parameters may be explicit or a named curve, 453 * \param params A list of parameters describing the group. 454 * \param libctx The associated library context or NULL for the default 455 * context 456 * \param propq A property query string 457 * \return newly created EC_GROUP object with specified parameters or NULL 458 * if an error occurred 459 */ 460 EC_GROUP *EC_GROUP_new_from_params(const OSSL_PARAM params[], 461 OSSL_LIB_CTX *libctx, const char *propq); 462 463 /** 464 * Creates an OSSL_PARAM array with the parameters describing the given 465 * EC_GROUP. 466 * The resulting parameters may contain an explicit or a named curve depending 467 * on the EC_GROUP. 468 * \param group pointer to the EC_GROUP object 469 * \param libctx The associated library context or NULL for the default 470 * context 471 * \param propq A property query string 472 * \param bnctx BN_CTX object (optional) 473 * \return newly created OSSL_PARAM array with the parameters 474 * describing the given EC_GROUP or NULL if an error occurred 475 */ 476 OSSL_PARAM *EC_GROUP_to_params(const EC_GROUP *group, OSSL_LIB_CTX *libctx, 477 const char *propq, BN_CTX *bnctx); 478 479 /** 480 * Creates a EC_GROUP object with a curve specified by a NID 481 * \param libctx The associated library context or NULL for the default 482 * context 483 * \param propq A property query string 484 * \param nid NID of the OID of the curve name 485 * \return newly created EC_GROUP object with specified curve or NULL 486 * if an error occurred 487 */ 488 EC_GROUP *EC_GROUP_new_by_curve_name_ex(OSSL_LIB_CTX *libctx, const char *propq, 489 int nid); 490 491 /** 492 * Creates a EC_GROUP object with a curve specified by a NID. Same as 493 * EC_GROUP_new_by_curve_name_ex but the libctx and propq are always 494 * NULL. 495 * \param nid NID of the OID of the curve name 496 * \return newly created EC_GROUP object with specified curve or NULL 497 * if an error occurred 498 */ 499 EC_GROUP *EC_GROUP_new_by_curve_name(int nid); 500 501 /** Creates a new EC_GROUP object from an ECPARAMETERS object 502 * \param params pointer to the ECPARAMETERS object 503 * \return newly created EC_GROUP object with specified curve or NULL 504 * if an error occurred 505 */ 506 EC_GROUP *EC_GROUP_new_from_ecparameters(const ECPARAMETERS *params); 507 508 /** Creates an ECPARAMETERS object for the given EC_GROUP object. 509 * \param group pointer to the EC_GROUP object 510 * \param params pointer to an existing ECPARAMETERS object or NULL 511 * \return pointer to the new ECPARAMETERS object or NULL 512 * if an error occurred. 513 */ 514 ECPARAMETERS *EC_GROUP_get_ecparameters(const EC_GROUP *group, 515 ECPARAMETERS *params); 516 517 /** Creates a new EC_GROUP object from an ECPKPARAMETERS object 518 * \param params pointer to an existing ECPKPARAMETERS object, or NULL 519 * \return newly created EC_GROUP object with specified curve, or NULL 520 * if an error occurred 521 */ 522 EC_GROUP *EC_GROUP_new_from_ecpkparameters(const ECPKPARAMETERS *params); 523 524 /** Creates an ECPKPARAMETERS object for the given EC_GROUP object. 525 * \param group pointer to the EC_GROUP object 526 * \param params pointer to an existing ECPKPARAMETERS object or NULL 527 * \return pointer to the new ECPKPARAMETERS object or NULL 528 * if an error occurred. 529 */ 530 ECPKPARAMETERS *EC_GROUP_get_ecpkparameters(const EC_GROUP *group, 531 ECPKPARAMETERS *params); 532 533 /********************************************************************/ 534 /* handling of internal curves */ 535 /********************************************************************/ 536 537 typedef struct { 538 int nid; 539 const char *comment; 540 } EC_builtin_curve; 541 542 /* 543 * EC_builtin_curves(EC_builtin_curve *r, size_t size) returns number of all 544 * available curves or zero if a error occurred. In case r is not zero, 545 * nitems EC_builtin_curve structures are filled with the data of the first 546 * nitems internal groups 547 */ 548 size_t EC_get_builtin_curves(EC_builtin_curve *r, size_t nitems); 549 550 const char *EC_curve_nid2nist(int nid); 551 int EC_curve_nist2nid(const char *name); 552 int EC_GROUP_check_named_curve(const EC_GROUP *group, int nist_only, 553 BN_CTX *ctx); 554 555 /********************************************************************/ 556 /* EC_POINT functions */ 557 /********************************************************************/ 558 559 /** Creates a new EC_POINT object for the specified EC_GROUP 560 * \param group EC_GROUP the underlying EC_GROUP object 561 * \return newly created EC_POINT object or NULL if an error occurred 562 */ 563 EC_POINT *EC_POINT_new(const EC_GROUP *group); 564 565 /** Frees a EC_POINT object 566 * \param point EC_POINT object to be freed 567 */ 568 void EC_POINT_free(EC_POINT *point); 569 570 /** Clears and frees a EC_POINT object 571 * \param point EC_POINT object to be cleared and freed 572 */ 573 void EC_POINT_clear_free(EC_POINT *point); 574 575 /** Copies EC_POINT object 576 * \param dst destination EC_POINT object 577 * \param src source EC_POINT object 578 * \return 1 on success and 0 if an error occurred 579 */ 580 int EC_POINT_copy(EC_POINT *dst, const EC_POINT *src); 581 582 /** Creates a new EC_POINT object and copies the content of the supplied 583 * EC_POINT 584 * \param src source EC_POINT object 585 * \param group underlying the EC_GROUP object 586 * \return newly created EC_POINT object or NULL if an error occurred 587 */ 588 EC_POINT *EC_POINT_dup(const EC_POINT *src, const EC_GROUP *group); 589 590 /** Sets a point to infinity (neutral element) 591 * \param group underlying EC_GROUP object 592 * \param point EC_POINT to set to infinity 593 * \return 1 on success and 0 if an error occurred 594 */ 595 int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point); 596 597 # ifndef OPENSSL_NO_DEPRECATED_3_0 598 /** Returns the EC_METHOD used in EC_POINT object 599 * \param point EC_POINT object 600 * \return the EC_METHOD used 601 */ 602 OSSL_DEPRECATEDIN_3_0 const EC_METHOD *EC_POINT_method_of(const EC_POINT *point); 603 604 /** Sets the jacobian projective coordinates of a EC_POINT over GFp 605 * \param group underlying EC_GROUP object 606 * \param p EC_POINT object 607 * \param x BIGNUM with the x-coordinate 608 * \param y BIGNUM with the y-coordinate 609 * \param z BIGNUM with the z-coordinate 610 * \param ctx BN_CTX object (optional) 611 * \return 1 on success and 0 if an error occurred 612 */ 613 OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_Jprojective_coordinates_GFp 614 (const EC_GROUP *group, EC_POINT *p, 615 const BIGNUM *x, const BIGNUM *y, const BIGNUM *z, 616 BN_CTX *ctx); 617 618 /** Gets the jacobian projective coordinates of a EC_POINT over GFp 619 * \param group underlying EC_GROUP object 620 * \param p EC_POINT object 621 * \param x BIGNUM for the x-coordinate 622 * \param y BIGNUM for the y-coordinate 623 * \param z BIGNUM for the z-coordinate 624 * \param ctx BN_CTX object (optional) 625 * \return 1 on success and 0 if an error occurred 626 */ 627 OSSL_DEPRECATEDIN_3_0 int EC_POINT_get_Jprojective_coordinates_GFp 628 (const EC_GROUP *group, const EC_POINT *p, 629 BIGNUM *x, BIGNUM *y, BIGNUM *z, BN_CTX *ctx); 630 # endif /* OPENSSL_NO_DEPRECATED_3_0 */ 631 632 /** Sets the affine coordinates of an EC_POINT 633 * \param group underlying EC_GROUP object 634 * \param p EC_POINT object 635 * \param x BIGNUM with the x-coordinate 636 * \param y BIGNUM with the y-coordinate 637 * \param ctx BN_CTX object (optional) 638 * \return 1 on success and 0 if an error occurred 639 */ 640 int EC_POINT_set_affine_coordinates(const EC_GROUP *group, EC_POINT *p, 641 const BIGNUM *x, const BIGNUM *y, 642 BN_CTX *ctx); 643 644 /** Gets the affine coordinates of an EC_POINT. 645 * \param group underlying EC_GROUP object 646 * \param p EC_POINT object 647 * \param x BIGNUM for the x-coordinate 648 * \param y BIGNUM for the y-coordinate 649 * \param ctx BN_CTX object (optional) 650 * \return 1 on success and 0 if an error occurred 651 */ 652 int EC_POINT_get_affine_coordinates(const EC_GROUP *group, const EC_POINT *p, 653 BIGNUM *x, BIGNUM *y, BN_CTX *ctx); 654 655 # ifndef OPENSSL_NO_DEPRECATED_3_0 656 /** Sets the affine coordinates of an EC_POINT. A synonym of 657 * EC_POINT_set_affine_coordinates 658 * \param group underlying EC_GROUP object 659 * \param p EC_POINT object 660 * \param x BIGNUM with the x-coordinate 661 * \param y BIGNUM with the y-coordinate 662 * \param ctx BN_CTX object (optional) 663 * \return 1 on success and 0 if an error occurred 664 */ 665 OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_affine_coordinates_GFp 666 (const EC_GROUP *group, EC_POINT *p, 667 const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx); 668 669 /** Gets the affine coordinates of an EC_POINT. A synonym of 670 * EC_POINT_get_affine_coordinates 671 * \param group underlying EC_GROUP object 672 * \param p EC_POINT object 673 * \param x BIGNUM for the x-coordinate 674 * \param y BIGNUM for the y-coordinate 675 * \param ctx BN_CTX object (optional) 676 * \return 1 on success and 0 if an error occurred 677 */ 678 OSSL_DEPRECATEDIN_3_0 int EC_POINT_get_affine_coordinates_GFp 679 (const EC_GROUP *group, const EC_POINT *p, 680 BIGNUM *x, BIGNUM *y, BN_CTX *ctx); 681 # endif /* OPENSSL_NO_DEPRECATED_3_0 */ 682 683 /** Sets the x9.62 compressed coordinates of a EC_POINT 684 * \param group underlying EC_GROUP object 685 * \param p EC_POINT object 686 * \param x BIGNUM with x-coordinate 687 * \param y_bit integer with the y-Bit (either 0 or 1) 688 * \param ctx BN_CTX object (optional) 689 * \return 1 on success and 0 if an error occurred 690 */ 691 int EC_POINT_set_compressed_coordinates(const EC_GROUP *group, EC_POINT *p, 692 const BIGNUM *x, int y_bit, 693 BN_CTX *ctx); 694 695 # ifndef OPENSSL_NO_DEPRECATED_3_0 696 /** Sets the x9.62 compressed coordinates of a EC_POINT. A synonym of 697 * EC_POINT_set_compressed_coordinates 698 * \param group underlying EC_GROUP object 699 * \param p EC_POINT object 700 * \param x BIGNUM with x-coordinate 701 * \param y_bit integer with the y-Bit (either 0 or 1) 702 * \param ctx BN_CTX object (optional) 703 * \return 1 on success and 0 if an error occurred 704 */ 705 OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_compressed_coordinates_GFp 706 (const EC_GROUP *group, EC_POINT *p, 707 const BIGNUM *x, int y_bit, BN_CTX *ctx); 708 # ifndef OPENSSL_NO_EC2M 709 /** Sets the affine coordinates of an EC_POINT. A synonym of 710 * EC_POINT_set_affine_coordinates 711 * \param group underlying EC_GROUP object 712 * \param p EC_POINT object 713 * \param x BIGNUM with the x-coordinate 714 * \param y BIGNUM with the y-coordinate 715 * \param ctx BN_CTX object (optional) 716 * \return 1 on success and 0 if an error occurred 717 */ 718 OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_affine_coordinates_GF2m 719 (const EC_GROUP *group, EC_POINT *p, 720 const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx); 721 722 /** Gets the affine coordinates of an EC_POINT. A synonym of 723 * EC_POINT_get_affine_coordinates 724 * \param group underlying EC_GROUP object 725 * \param p EC_POINT object 726 * \param x BIGNUM for the x-coordinate 727 * \param y BIGNUM for the y-coordinate 728 * \param ctx BN_CTX object (optional) 729 * \return 1 on success and 0 if an error occurred 730 */ 731 OSSL_DEPRECATEDIN_3_0 int EC_POINT_get_affine_coordinates_GF2m 732 (const EC_GROUP *group, const EC_POINT *p, 733 BIGNUM *x, BIGNUM *y, BN_CTX *ctx); 734 735 /** Sets the x9.62 compressed coordinates of a EC_POINT. A synonym of 736 * EC_POINT_set_compressed_coordinates 737 * \param group underlying EC_GROUP object 738 * \param p EC_POINT object 739 * \param x BIGNUM with x-coordinate 740 * \param y_bit integer with the y-Bit (either 0 or 1) 741 * \param ctx BN_CTX object (optional) 742 * \return 1 on success and 0 if an error occurred 743 */ 744 OSSL_DEPRECATEDIN_3_0 int EC_POINT_set_compressed_coordinates_GF2m 745 (const EC_GROUP *group, EC_POINT *p, 746 const BIGNUM *x, int y_bit, BN_CTX *ctx); 747 # endif 748 # endif /* OPENSSL_NO_DEPRECATED_3_0 */ 749 750 /** Encodes a EC_POINT object to a octet string 751 * \param group underlying EC_GROUP object 752 * \param p EC_POINT object 753 * \param form point conversion form 754 * \param buf memory buffer for the result. If NULL the function returns 755 * required buffer size. 756 * \param len length of the memory buffer 757 * \param ctx BN_CTX object (optional) 758 * \return the length of the encoded octet string or 0 if an error occurred 759 */ 760 size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *p, 761 point_conversion_form_t form, 762 unsigned char *buf, size_t len, BN_CTX *ctx); 763 764 /** Decodes a EC_POINT from a octet string 765 * \param group underlying EC_GROUP object 766 * \param p EC_POINT object 767 * \param buf memory buffer with the encoded ec point 768 * \param len length of the encoded ec point 769 * \param ctx BN_CTX object (optional) 770 * \return 1 on success and 0 if an error occurred 771 */ 772 int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *p, 773 const unsigned char *buf, size_t len, BN_CTX *ctx); 774 775 /** Encodes an EC_POINT object to an allocated octet string 776 * \param group underlying EC_GROUP object 777 * \param point EC_POINT object 778 * \param form point conversion form 779 * \param pbuf returns pointer to allocated buffer 780 * \param ctx BN_CTX object (optional) 781 * \return the length of the encoded octet string or 0 if an error occurred 782 */ 783 size_t EC_POINT_point2buf(const EC_GROUP *group, const EC_POINT *point, 784 point_conversion_form_t form, 785 unsigned char **pbuf, BN_CTX *ctx); 786 787 /* other interfaces to point2oct/oct2point: */ 788 # ifndef OPENSSL_NO_DEPRECATED_3_0 789 OSSL_DEPRECATEDIN_3_0 BIGNUM *EC_POINT_point2bn(const EC_GROUP *, 790 const EC_POINT *, 791 point_conversion_form_t form, 792 BIGNUM *, BN_CTX *); 793 OSSL_DEPRECATEDIN_3_0 EC_POINT *EC_POINT_bn2point(const EC_GROUP *, 794 const BIGNUM *, 795 EC_POINT *, BN_CTX *); 796 # endif /* OPENSSL_NO_DEPRECATED_3_0 */ 797 798 char *EC_POINT_point2hex(const EC_GROUP *, const EC_POINT *, 799 point_conversion_form_t form, BN_CTX *); 800 EC_POINT *EC_POINT_hex2point(const EC_GROUP *, const char *, 801 EC_POINT *, BN_CTX *); 802 803 /********************************************************************/ 804 /* functions for doing EC_POINT arithmetic */ 805 /********************************************************************/ 806 807 /** Computes the sum of two EC_POINT 808 * \param group underlying EC_GROUP object 809 * \param r EC_POINT object for the result (r = a + b) 810 * \param a EC_POINT object with the first summand 811 * \param b EC_POINT object with the second summand 812 * \param ctx BN_CTX object (optional) 813 * \return 1 on success and 0 if an error occurred 814 */ 815 int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, 816 const EC_POINT *b, BN_CTX *ctx); 817 818 /** Computes the double of a EC_POINT 819 * \param group underlying EC_GROUP object 820 * \param r EC_POINT object for the result (r = 2 * a) 821 * \param a EC_POINT object 822 * \param ctx BN_CTX object (optional) 823 * \return 1 on success and 0 if an error occurred 824 */ 825 int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, 826 BN_CTX *ctx); 827 828 /** Computes the inverse of a EC_POINT 829 * \param group underlying EC_GROUP object 830 * \param a EC_POINT object to be inverted (it's used for the result as well) 831 * \param ctx BN_CTX object (optional) 832 * \return 1 on success and 0 if an error occurred 833 */ 834 int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx); 835 836 /** Checks whether the point is the neutral element of the group 837 * \param group the underlying EC_GROUP object 838 * \param p EC_POINT object 839 * \return 1 if the point is the neutral element and 0 otherwise 840 */ 841 int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *p); 842 843 /** Checks whether the point is on the curve 844 * \param group underlying EC_GROUP object 845 * \param point EC_POINT object to check 846 * \param ctx BN_CTX object (optional) 847 * \return 1 if the point is on the curve, 0 if not, or -1 on error 848 */ 849 int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point, 850 BN_CTX *ctx); 851 852 /** Compares two EC_POINTs 853 * \param group underlying EC_GROUP object 854 * \param a first EC_POINT object 855 * \param b second EC_POINT object 856 * \param ctx BN_CTX object (optional) 857 * \return 1 if the points are not equal, 0 if they are, or -1 on error 858 */ 859 int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b, 860 BN_CTX *ctx); 861 862 # ifndef OPENSSL_NO_DEPRECATED_3_0 863 OSSL_DEPRECATEDIN_3_0 int EC_POINT_make_affine(const EC_GROUP *group, 864 EC_POINT *point, BN_CTX *ctx); 865 OSSL_DEPRECATEDIN_3_0 int EC_POINTs_make_affine(const EC_GROUP *group, size_t num, 866 EC_POINT *points[], BN_CTX *ctx); 867 868 /** Computes r = generator * n + sum_{i=0}^{num-1} p[i] * m[i] 869 * \param group underlying EC_GROUP object 870 * \param r EC_POINT object for the result 871 * \param n BIGNUM with the multiplier for the group generator (optional) 872 * \param num number further summands 873 * \param p array of size num of EC_POINT objects 874 * \param m array of size num of BIGNUM objects 875 * \param ctx BN_CTX object (optional) 876 * \return 1 on success and 0 if an error occurred 877 */ 878 OSSL_DEPRECATEDIN_3_0 int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, 879 const BIGNUM *n, size_t num, 880 const EC_POINT *p[], const BIGNUM *m[], 881 BN_CTX *ctx); 882 # endif /* OPENSSL_NO_DEPRECATED_3_0 */ 883 884 /** Computes r = generator * n + q * m 885 * \param group underlying EC_GROUP object 886 * \param r EC_POINT object for the result 887 * \param n BIGNUM with the multiplier for the group generator (optional) 888 * \param q EC_POINT object with the first factor of the second summand 889 * \param m BIGNUM with the second factor of the second summand 890 * \param ctx BN_CTX object (optional) 891 * \return 1 on success and 0 if an error occurred 892 */ 893 int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n, 894 const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx); 895 896 # ifndef OPENSSL_NO_DEPRECATED_3_0 897 /** Stores multiples of generator for faster point multiplication 898 * \param group EC_GROUP object 899 * \param ctx BN_CTX object (optional) 900 * \return 1 on success and 0 if an error occurred 901 */ 902 OSSL_DEPRECATEDIN_3_0 int EC_GROUP_precompute_mult(EC_GROUP *group, BN_CTX *ctx); 903 904 /** Reports whether a precomputation has been done 905 * \param group EC_GROUP object 906 * \return 1 if a pre-computation has been done and 0 otherwise 907 */ 908 OSSL_DEPRECATEDIN_3_0 int EC_GROUP_have_precompute_mult(const EC_GROUP *group); 909 # endif /* OPENSSL_NO_DEPRECATED_3_0 */ 910 911 /********************************************************************/ 912 /* ASN1 stuff */ 913 /********************************************************************/ 914 915 DECLARE_ASN1_ITEM(ECPKPARAMETERS) 916 DECLARE_ASN1_ALLOC_FUNCTIONS(ECPKPARAMETERS) 917 DECLARE_ASN1_ITEM(ECPARAMETERS) 918 DECLARE_ASN1_ALLOC_FUNCTIONS(ECPARAMETERS) 919 920 /* 921 * EC_GROUP_get_basis_type() returns the NID of the basis type used to 922 * represent the field elements 923 */ 924 int EC_GROUP_get_basis_type(const EC_GROUP *); 925 # ifndef OPENSSL_NO_EC2M 926 int EC_GROUP_get_trinomial_basis(const EC_GROUP *, unsigned int *k); 927 int EC_GROUP_get_pentanomial_basis(const EC_GROUP *, unsigned int *k1, 928 unsigned int *k2, unsigned int *k3); 929 # endif 930 931 EC_GROUP *d2i_ECPKParameters(EC_GROUP **, const unsigned char **in, long len); 932 int i2d_ECPKParameters(const EC_GROUP *, unsigned char **out); 933 934 # define d2i_ECPKParameters_bio(bp,x) \ 935 ASN1_d2i_bio_of(EC_GROUP, NULL, d2i_ECPKParameters, bp, x) 936 # define i2d_ECPKParameters_bio(bp,x) \ 937 ASN1_i2d_bio_of(EC_GROUP, i2d_ECPKParameters, bp, x) 938 # define d2i_ECPKParameters_fp(fp,x) \ 939 (EC_GROUP *)ASN1_d2i_fp(NULL, (d2i_of_void *)d2i_ECPKParameters, (fp), \ 940 (void **)(x)) 941 # define i2d_ECPKParameters_fp(fp,x) \ 942 ASN1_i2d_fp((i2d_of_void *)i2d_ECPKParameters, (fp), (void *)(x)) 943 944 # ifndef OPENSSL_NO_DEPRECATED_3_0 945 OSSL_DEPRECATEDIN_3_0 int ECPKParameters_print(BIO *bp, const EC_GROUP *x, 946 int off); 947 # ifndef OPENSSL_NO_STDIO 948 OSSL_DEPRECATEDIN_3_0 int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, 949 int off); 950 # endif 951 # endif /* OPENSSL_NO_DEPRECATED_3_0 */ 952 953 /********************************************************************/ 954 /* EC_KEY functions */ 955 /********************************************************************/ 956 957 /* some values for the encoding_flag */ 958 # define EC_PKEY_NO_PARAMETERS 0x001 959 # define EC_PKEY_NO_PUBKEY 0x002 960 961 /* some values for the flags field */ 962 # define EC_FLAG_SM2_RANGE 0x0004 963 # define EC_FLAG_COFACTOR_ECDH 0x1000 964 # define EC_FLAG_CHECK_NAMED_GROUP 0x2000 965 # define EC_FLAG_CHECK_NAMED_GROUP_NIST 0x4000 966 # define EC_FLAG_CHECK_NAMED_GROUP_MASK \ 967 (EC_FLAG_CHECK_NAMED_GROUP | EC_FLAG_CHECK_NAMED_GROUP_NIST) 968 969 /* Deprecated flags - it was using 0x01..0x02 */ 970 # define EC_FLAG_NON_FIPS_ALLOW 0x0000 971 # define EC_FLAG_FIPS_CHECKED 0x0000 972 973 # ifndef OPENSSL_NO_DEPRECATED_3_0 974 /** 975 * Creates a new EC_KEY object. 976 * \param ctx The library context for to use for this EC_KEY. May be NULL in 977 * which case the default library context is used. 978 * \return EC_KEY object or NULL if an error occurred. 979 */ 980 OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_ex(OSSL_LIB_CTX *ctx, const char *propq); 981 982 /** 983 * Creates a new EC_KEY object. Same as calling EC_KEY_new_ex with a 984 * NULL library context 985 * \return EC_KEY object or NULL if an error occurred. 986 */ 987 OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new(void); 988 989 OSSL_DEPRECATEDIN_3_0 int EC_KEY_get_flags(const EC_KEY *key); 990 991 OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_flags(EC_KEY *key, int flags); 992 993 OSSL_DEPRECATEDIN_3_0 void EC_KEY_clear_flags(EC_KEY *key, int flags); 994 995 OSSL_DEPRECATEDIN_3_0 int EC_KEY_decoded_from_explicit_params(const EC_KEY *key); 996 997 /** 998 * Creates a new EC_KEY object using a named curve as underlying 999 * EC_GROUP object. 1000 * \param ctx The library context for to use for this EC_KEY. May be NULL in 1001 * which case the default library context is used. 1002 * \param propq Any property query string 1003 * \param nid NID of the named curve. 1004 * \return EC_KEY object or NULL if an error occurred. 1005 */ 1006 OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_by_curve_name_ex(OSSL_LIB_CTX *ctx, 1007 const char *propq, 1008 int nid); 1009 1010 /** 1011 * Creates a new EC_KEY object using a named curve as underlying 1012 * EC_GROUP object. Same as calling EC_KEY_new_by_curve_name_ex with a NULL 1013 * library context and property query string. 1014 * \param nid NID of the named curve. 1015 * \return EC_KEY object or NULL if an error occurred. 1016 */ 1017 OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_by_curve_name(int nid); 1018 1019 /** Frees a EC_KEY object. 1020 * \param key EC_KEY object to be freed. 1021 */ 1022 OSSL_DEPRECATEDIN_3_0 void EC_KEY_free(EC_KEY *key); 1023 1024 /** Copies a EC_KEY object. 1025 * \param dst destination EC_KEY object 1026 * \param src src EC_KEY object 1027 * \return dst or NULL if an error occurred. 1028 */ 1029 OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_copy(EC_KEY *dst, const EC_KEY *src); 1030 1031 /** Creates a new EC_KEY object and copies the content from src to it. 1032 * \param src the source EC_KEY object 1033 * \return newly created EC_KEY object or NULL if an error occurred. 1034 */ 1035 OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_dup(const EC_KEY *src); 1036 1037 /** Increases the internal reference count of a EC_KEY object. 1038 * \param key EC_KEY object 1039 * \return 1 on success and 0 if an error occurred. 1040 */ 1041 OSSL_DEPRECATEDIN_3_0 int EC_KEY_up_ref(EC_KEY *key); 1042 1043 /** Returns the ENGINE object of a EC_KEY object 1044 * \param eckey EC_KEY object 1045 * \return the ENGINE object (possibly NULL). 1046 */ 1047 OSSL_DEPRECATEDIN_3_0 ENGINE *EC_KEY_get0_engine(const EC_KEY *eckey); 1048 1049 /** Returns the EC_GROUP object of a EC_KEY object 1050 * \param key EC_KEY object 1051 * \return the EC_GROUP object (possibly NULL). 1052 */ 1053 OSSL_DEPRECATEDIN_3_0 const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key); 1054 1055 /** Sets the EC_GROUP of a EC_KEY object. 1056 * \param key EC_KEY object 1057 * \param group EC_GROUP to use in the EC_KEY object (note: the EC_KEY 1058 * object will use an own copy of the EC_GROUP). 1059 * \return 1 on success and 0 if an error occurred. 1060 */ 1061 OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group); 1062 1063 /** Returns the private key of a EC_KEY object. 1064 * \param key EC_KEY object 1065 * \return a BIGNUM with the private key (possibly NULL). 1066 */ 1067 OSSL_DEPRECATEDIN_3_0 const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key); 1068 1069 /** Sets the private key of a EC_KEY object. 1070 * \param key EC_KEY object 1071 * \param prv BIGNUM with the private key (note: the EC_KEY object 1072 * will use an own copy of the BIGNUM). 1073 * \return 1 on success and 0 if an error occurred. 1074 */ 1075 OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *prv); 1076 1077 /** Returns the public key of a EC_KEY object. 1078 * \param key the EC_KEY object 1079 * \return a EC_POINT object with the public key (possibly NULL) 1080 */ 1081 OSSL_DEPRECATEDIN_3_0 const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key); 1082 1083 /** Sets the public key of a EC_KEY object. 1084 * \param key EC_KEY object 1085 * \param pub EC_POINT object with the public key (note: the EC_KEY object 1086 * will use an own copy of the EC_POINT object). 1087 * \return 1 on success and 0 if an error occurred. 1088 */ 1089 OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub); 1090 1091 OSSL_DEPRECATEDIN_3_0 unsigned EC_KEY_get_enc_flags(const EC_KEY *key); 1092 OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags); 1093 OSSL_DEPRECATEDIN_3_0 point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key); 1094 OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_conv_form(EC_KEY *eckey, 1095 point_conversion_form_t cform); 1096 # endif /*OPENSSL_NO_DEPRECATED_3_0 */ 1097 1098 # define EC_KEY_get_ex_new_index(l, p, newf, dupf, freef) \ 1099 CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_EC_KEY, l, p, newf, dupf, freef) 1100 1101 # ifndef OPENSSL_NO_DEPRECATED_3_0 1102 OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_ex_data(EC_KEY *key, int idx, void *arg); 1103 OSSL_DEPRECATEDIN_3_0 void *EC_KEY_get_ex_data(const EC_KEY *key, int idx); 1104 1105 /* wrapper functions for the underlying EC_GROUP object */ 1106 OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_asn1_flag(EC_KEY *eckey, int asn1_flag); 1107 1108 /** Creates a table of pre-computed multiples of the generator to 1109 * accelerate further EC_KEY operations. 1110 * \param key EC_KEY object 1111 * \param ctx BN_CTX object (optional) 1112 * \return 1 on success and 0 if an error occurred. 1113 */ 1114 OSSL_DEPRECATEDIN_3_0 int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx); 1115 1116 /** Creates a new ec private (and optional a new public) key. 1117 * \param key EC_KEY object 1118 * \return 1 on success and 0 if an error occurred. 1119 */ 1120 OSSL_DEPRECATEDIN_3_0 int EC_KEY_generate_key(EC_KEY *key); 1121 1122 /** Verifies that a private and/or public key is valid. 1123 * \param key the EC_KEY object 1124 * \return 1 on success and 0 otherwise. 1125 */ 1126 OSSL_DEPRECATEDIN_3_0 int EC_KEY_check_key(const EC_KEY *key); 1127 1128 /** Indicates if an EC_KEY can be used for signing. 1129 * \param eckey the EC_KEY object 1130 * \return 1 if can sign and 0 otherwise. 1131 */ 1132 OSSL_DEPRECATEDIN_3_0 int EC_KEY_can_sign(const EC_KEY *eckey); 1133 1134 /** Sets a public key from affine coordinates performing 1135 * necessary NIST PKV tests. 1136 * \param key the EC_KEY object 1137 * \param x public key x coordinate 1138 * \param y public key y coordinate 1139 * \return 1 on success and 0 otherwise. 1140 */ 1141 OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, 1142 BIGNUM *x, 1143 BIGNUM *y); 1144 1145 /** Encodes an EC_KEY public key to an allocated octet string 1146 * \param key key to encode 1147 * \param form point conversion form 1148 * \param pbuf returns pointer to allocated buffer 1149 * \param ctx BN_CTX object (optional) 1150 * \return the length of the encoded octet string or 0 if an error occurred 1151 */ 1152 OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_key2buf(const EC_KEY *key, 1153 point_conversion_form_t form, 1154 unsigned char **pbuf, BN_CTX *ctx); 1155 1156 /** Decodes a EC_KEY public key from a octet string 1157 * \param key key to decode 1158 * \param buf memory buffer with the encoded ec point 1159 * \param len length of the encoded ec point 1160 * \param ctx BN_CTX object (optional) 1161 * \return 1 on success and 0 if an error occurred 1162 */ 1163 1164 OSSL_DEPRECATEDIN_3_0 int EC_KEY_oct2key(EC_KEY *key, const unsigned char *buf, 1165 size_t len, BN_CTX *ctx); 1166 1167 /** Decodes an EC_KEY private key from an octet string 1168 * \param key key to decode 1169 * \param buf memory buffer with the encoded private key 1170 * \param len length of the encoded key 1171 * \return 1 on success and 0 if an error occurred 1172 */ 1173 1174 OSSL_DEPRECATEDIN_3_0 int EC_KEY_oct2priv(EC_KEY *key, const unsigned char *buf, 1175 size_t len); 1176 1177 /** Encodes a EC_KEY private key to an octet string 1178 * \param key key to encode 1179 * \param buf memory buffer for the result. If NULL the function returns 1180 * required buffer size. 1181 * \param len length of the memory buffer 1182 * \return the length of the encoded octet string or 0 if an error occurred 1183 */ 1184 1185 OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_priv2oct(const EC_KEY *key, 1186 unsigned char *buf, size_t len); 1187 1188 /** Encodes an EC_KEY private key to an allocated octet string 1189 * \param eckey key to encode 1190 * \param pbuf returns pointer to allocated buffer 1191 * \return the length of the encoded octet string or 0 if an error occurred 1192 */ 1193 OSSL_DEPRECATEDIN_3_0 size_t EC_KEY_priv2buf(const EC_KEY *eckey, 1194 unsigned char **pbuf); 1195 1196 /********************************************************************/ 1197 /* de- and encoding functions for SEC1 ECPrivateKey */ 1198 /********************************************************************/ 1199 1200 /** Decodes a private key from a memory buffer. 1201 * \param key a pointer to a EC_KEY object which should be used (or NULL) 1202 * \param in pointer to memory with the DER encoded private key 1203 * \param len length of the DER encoded private key 1204 * \return the decoded private key or NULL if an error occurred. 1205 */ 1206 OSSL_DEPRECATEDIN_3_0 EC_KEY *d2i_ECPrivateKey(EC_KEY **key, 1207 const unsigned char **in, 1208 long len); 1209 1210 /** Encodes a private key object and stores the result in a buffer. 1211 * \param key the EC_KEY object to encode 1212 * \param out the buffer for the result (if NULL the function returns number 1213 * of bytes needed). 1214 * \return 1 on success and 0 if an error occurred. 1215 */ 1216 OSSL_DEPRECATEDIN_3_0 int i2d_ECPrivateKey(const EC_KEY *key, 1217 unsigned char **out); 1218 1219 /********************************************************************/ 1220 /* de- and encoding functions for EC parameters */ 1221 /********************************************************************/ 1222 1223 /** Decodes ec parameter from a memory buffer. 1224 * \param key a pointer to a EC_KEY object which should be used (or NULL) 1225 * \param in pointer to memory with the DER encoded ec parameters 1226 * \param len length of the DER encoded ec parameters 1227 * \return a EC_KEY object with the decoded parameters or NULL if an error 1228 * occurred. 1229 */ 1230 OSSL_DEPRECATEDIN_3_0 EC_KEY *d2i_ECParameters(EC_KEY **key, 1231 const unsigned char **in, 1232 long len); 1233 1234 /** Encodes ec parameter and stores the result in a buffer. 1235 * \param key the EC_KEY object with ec parameters to encode 1236 * \param out the buffer for the result (if NULL the function returns number 1237 * of bytes needed). 1238 * \return 1 on success and 0 if an error occurred. 1239 */ 1240 OSSL_DEPRECATEDIN_3_0 int i2d_ECParameters(const EC_KEY *key, 1241 unsigned char **out); 1242 1243 /********************************************************************/ 1244 /* de- and encoding functions for EC public key */ 1245 /* (octet string, not DER -- hence 'o2i' and 'i2o') */ 1246 /********************************************************************/ 1247 1248 /** Decodes an ec public key from a octet string. 1249 * \param key a pointer to a EC_KEY object which should be used 1250 * \param in memory buffer with the encoded public key 1251 * \param len length of the encoded public key 1252 * \return EC_KEY object with decoded public key or NULL if an error 1253 * occurred. 1254 */ 1255 OSSL_DEPRECATEDIN_3_0 EC_KEY *o2i_ECPublicKey(EC_KEY **key, 1256 const unsigned char **in, long len); 1257 1258 /** Encodes an ec public key in an octet string. 1259 * \param key the EC_KEY object with the public key 1260 * \param out the buffer for the result (if NULL the function returns number 1261 * of bytes needed). 1262 * \return 1 on success and 0 if an error occurred 1263 */ 1264 OSSL_DEPRECATEDIN_3_0 int i2o_ECPublicKey(const EC_KEY *key, unsigned char **out); 1265 1266 /** Prints out the ec parameters on human readable form. 1267 * \param bp BIO object to which the information is printed 1268 * \param key EC_KEY object 1269 * \return 1 on success and 0 if an error occurred 1270 */ 1271 OSSL_DEPRECATEDIN_3_0 int ECParameters_print(BIO *bp, const EC_KEY *key); 1272 1273 /** Prints out the contents of a EC_KEY object 1274 * \param bp BIO object to which the information is printed 1275 * \param key EC_KEY object 1276 * \param off line offset 1277 * \return 1 on success and 0 if an error occurred 1278 */ 1279 OSSL_DEPRECATEDIN_3_0 int EC_KEY_print(BIO *bp, const EC_KEY *key, int off); 1280 1281 # ifndef OPENSSL_NO_STDIO 1282 /** Prints out the ec parameters on human readable form. 1283 * \param fp file descriptor to which the information is printed 1284 * \param key EC_KEY object 1285 * \return 1 on success and 0 if an error occurred 1286 */ 1287 OSSL_DEPRECATEDIN_3_0 int ECParameters_print_fp(FILE *fp, const EC_KEY *key); 1288 1289 /** Prints out the contents of a EC_KEY object 1290 * \param fp file descriptor to which the information is printed 1291 * \param key EC_KEY object 1292 * \param off line offset 1293 * \return 1 on success and 0 if an error occurred 1294 */ 1295 OSSL_DEPRECATEDIN_3_0 int EC_KEY_print_fp(FILE *fp, const EC_KEY *key, int off); 1296 # endif /* OPENSSL_NO_STDIO */ 1297 1298 OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD *EC_KEY_OpenSSL(void); 1299 OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD *EC_KEY_get_default_method(void); 1300 OSSL_DEPRECATEDIN_3_0 void EC_KEY_set_default_method(const EC_KEY_METHOD *meth); 1301 OSSL_DEPRECATEDIN_3_0 const EC_KEY_METHOD *EC_KEY_get_method(const EC_KEY *key); 1302 OSSL_DEPRECATEDIN_3_0 int EC_KEY_set_method(EC_KEY *key, const EC_KEY_METHOD *meth); 1303 OSSL_DEPRECATEDIN_3_0 EC_KEY *EC_KEY_new_method(ENGINE *engine); 1304 1305 /** The old name for ecdh_KDF_X9_63 1306 * The ECDH KDF specification has been mistakenly attributed to ANSI X9.62, 1307 * it is actually specified in ANSI X9.63. 1308 * This identifier is retained for backwards compatibility 1309 */ 1310 OSSL_DEPRECATEDIN_3_0 int ECDH_KDF_X9_62(unsigned char *out, size_t outlen, 1311 const unsigned char *Z, size_t Zlen, 1312 const unsigned char *sinfo, 1313 size_t sinfolen, const EVP_MD *md); 1314 1315 OSSL_DEPRECATEDIN_3_0 int ECDH_compute_key(void *out, size_t outlen, 1316 const EC_POINT *pub_key, 1317 const EC_KEY *ecdh, 1318 void *(*KDF)(const void *in, 1319 size_t inlen, void *out, 1320 size_t *outlen)); 1321 # endif /* OPENSSL_NO_DEPRECATED_3_0 */ 1322 1323 typedef struct ECDSA_SIG_st ECDSA_SIG; 1324 1325 /** Allocates and initialize a ECDSA_SIG structure 1326 * \return pointer to a ECDSA_SIG structure or NULL if an error occurred 1327 */ 1328 ECDSA_SIG *ECDSA_SIG_new(void); 1329 1330 /** frees a ECDSA_SIG structure 1331 * \param sig pointer to the ECDSA_SIG structure 1332 */ 1333 void ECDSA_SIG_free(ECDSA_SIG *sig); 1334 1335 /** i2d_ECDSA_SIG encodes content of ECDSA_SIG (note: this function modifies *pp 1336 * (*pp += length of the DER encoded signature)). 1337 * \param sig pointer to the ECDSA_SIG object 1338 * \param pp pointer to a unsigned char pointer for the output or NULL 1339 * \return the length of the DER encoded ECDSA_SIG object or a negative value 1340 * on error 1341 */ 1342 DECLARE_ASN1_ENCODE_FUNCTIONS_only(ECDSA_SIG, ECDSA_SIG) 1343 1344 /** d2i_ECDSA_SIG decodes an ECDSA signature (note: this function modifies *pp 1345 * (*pp += len)). 1346 * \param sig pointer to ECDSA_SIG pointer (may be NULL) 1347 * \param pp memory buffer with the DER encoded signature 1348 * \param len length of the buffer 1349 * \return pointer to the decoded ECDSA_SIG structure (or NULL) 1350 */ 1351 1352 /** Accessor for r and s fields of ECDSA_SIG 1353 * \param sig pointer to ECDSA_SIG structure 1354 * \param pr pointer to BIGNUM pointer for r (may be NULL) 1355 * \param ps pointer to BIGNUM pointer for s (may be NULL) 1356 */ 1357 void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps); 1358 1359 /** Accessor for r field of ECDSA_SIG 1360 * \param sig pointer to ECDSA_SIG structure 1361 */ 1362 const BIGNUM *ECDSA_SIG_get0_r(const ECDSA_SIG *sig); 1363 1364 /** Accessor for s field of ECDSA_SIG 1365 * \param sig pointer to ECDSA_SIG structure 1366 */ 1367 const BIGNUM *ECDSA_SIG_get0_s(const ECDSA_SIG *sig); 1368 1369 /** Setter for r and s fields of ECDSA_SIG 1370 * \param sig pointer to ECDSA_SIG structure 1371 * \param r pointer to BIGNUM for r 1372 * \param s pointer to BIGNUM for s 1373 */ 1374 int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s); 1375 1376 # ifndef OPENSSL_NO_DEPRECATED_3_0 1377 /** Computes the ECDSA signature of the given hash value using 1378 * the supplied private key and returns the created signature. 1379 * \param dgst pointer to the hash value 1380 * \param dgst_len length of the hash value 1381 * \param eckey EC_KEY object containing a private EC key 1382 * \return pointer to a ECDSA_SIG structure or NULL if an error occurred 1383 */ 1384 OSSL_DEPRECATEDIN_3_0 ECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst, 1385 int dgst_len, EC_KEY *eckey); 1386 1387 /** Computes ECDSA signature of a given hash value using the supplied 1388 * private key (note: sig must point to ECDSA_size(eckey) bytes of memory). 1389 * \param dgst pointer to the hash value to sign 1390 * \param dgstlen length of the hash value 1391 * \param kinv BIGNUM with a pre-computed inverse k (optional) 1392 * \param rp BIGNUM with a pre-computed rp value (optional), 1393 * see ECDSA_sign_setup 1394 * \param eckey EC_KEY object containing a private EC key 1395 * \return pointer to a ECDSA_SIG structure or NULL if an error occurred 1396 */ 1397 OSSL_DEPRECATEDIN_3_0 ECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *dgst, 1398 int dgstlen, const BIGNUM *kinv, 1399 const BIGNUM *rp, EC_KEY *eckey); 1400 1401 /** Verifies that the supplied signature is a valid ECDSA 1402 * signature of the supplied hash value using the supplied public key. 1403 * \param dgst pointer to the hash value 1404 * \param dgst_len length of the hash value 1405 * \param sig ECDSA_SIG structure 1406 * \param eckey EC_KEY object containing a public EC key 1407 * \return 1 if the signature is valid, 0 if the signature is invalid 1408 * and -1 on error 1409 */ 1410 OSSL_DEPRECATEDIN_3_0 int ECDSA_do_verify(const unsigned char *dgst, int dgst_len, 1411 const ECDSA_SIG *sig, EC_KEY *eckey); 1412 1413 /** Precompute parts of the signing operation 1414 * \param eckey EC_KEY object containing a private EC key 1415 * \param ctx BN_CTX object (optional) 1416 * \param kinv BIGNUM pointer for the inverse of k 1417 * \param rp BIGNUM pointer for x coordinate of k * generator 1418 * \return 1 on success and 0 otherwise 1419 */ 1420 OSSL_DEPRECATEDIN_3_0 int ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx, 1421 BIGNUM **kinv, BIGNUM **rp); 1422 1423 /** Computes ECDSA signature of a given hash value using the supplied 1424 * private key (note: sig must point to ECDSA_size(eckey) bytes of memory). 1425 * \param type this parameter is ignored 1426 * \param dgst pointer to the hash value to sign 1427 * \param dgstlen length of the hash value 1428 * \param sig memory for the DER encoded created signature 1429 * \param siglen pointer to the length of the returned signature 1430 * \param eckey EC_KEY object containing a private EC key 1431 * \return 1 on success and 0 otherwise 1432 */ 1433 OSSL_DEPRECATEDIN_3_0 int ECDSA_sign(int type, const unsigned char *dgst, 1434 int dgstlen, unsigned char *sig, 1435 unsigned int *siglen, EC_KEY *eckey); 1436 1437 /** Computes ECDSA signature of a given hash value using the supplied 1438 * private key (note: sig must point to ECDSA_size(eckey) bytes of memory). 1439 * \param type this parameter is ignored 1440 * \param dgst pointer to the hash value to sign 1441 * \param dgstlen length of the hash value 1442 * \param sig buffer to hold the DER encoded signature 1443 * \param siglen pointer to the length of the returned signature 1444 * \param kinv BIGNUM with a pre-computed inverse k (optional) 1445 * \param rp BIGNUM with a pre-computed rp value (optional), 1446 * see ECDSA_sign_setup 1447 * \param eckey EC_KEY object containing a private EC key 1448 * \return 1 on success and 0 otherwise 1449 */ 1450 OSSL_DEPRECATEDIN_3_0 int ECDSA_sign_ex(int type, const unsigned char *dgst, 1451 int dgstlen, unsigned char *sig, 1452 unsigned int *siglen, const BIGNUM *kinv, 1453 const BIGNUM *rp, EC_KEY *eckey); 1454 1455 /** Verifies that the given signature is valid ECDSA signature 1456 * of the supplied hash value using the specified public key. 1457 * \param type this parameter is ignored 1458 * \param dgst pointer to the hash value 1459 * \param dgstlen length of the hash value 1460 * \param sig pointer to the DER encoded signature 1461 * \param siglen length of the DER encoded signature 1462 * \param eckey EC_KEY object containing a public EC key 1463 * \return 1 if the signature is valid, 0 if the signature is invalid 1464 * and -1 on error 1465 */ 1466 OSSL_DEPRECATEDIN_3_0 int ECDSA_verify(int type, const unsigned char *dgst, 1467 int dgstlen, const unsigned char *sig, 1468 int siglen, EC_KEY *eckey); 1469 1470 /** Returns the maximum length of the DER encoded signature 1471 * \param eckey EC_KEY object 1472 * \return numbers of bytes required for the DER encoded signature 1473 */ 1474 OSSL_DEPRECATEDIN_3_0 int ECDSA_size(const EC_KEY *eckey); 1475 1476 /********************************************************************/ 1477 /* EC_KEY_METHOD constructors, destructors, writers and accessors */ 1478 /********************************************************************/ 1479 1480 OSSL_DEPRECATEDIN_3_0 EC_KEY_METHOD *EC_KEY_METHOD_new(const EC_KEY_METHOD *meth); 1481 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_free(EC_KEY_METHOD *meth); 1482 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_init 1483 (EC_KEY_METHOD *meth, 1484 int (*init)(EC_KEY *key), 1485 void (*finish)(EC_KEY *key), 1486 int (*copy)(EC_KEY *dest, const EC_KEY *src), 1487 int (*set_group)(EC_KEY *key, const EC_GROUP *grp), 1488 int (*set_private)(EC_KEY *key, const BIGNUM *priv_key), 1489 int (*set_public)(EC_KEY *key, const EC_POINT *pub_key)); 1490 1491 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_keygen(EC_KEY_METHOD *meth, 1492 int (*keygen)(EC_KEY *key)); 1493 1494 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_compute_key 1495 (EC_KEY_METHOD *meth, 1496 int (*ckey)(unsigned char **psec, size_t *pseclen, 1497 const EC_POINT *pub_key, const EC_KEY *ecdh)); 1498 1499 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_sign 1500 (EC_KEY_METHOD *meth, 1501 int (*sign)(int type, const unsigned char *dgst, 1502 int dlen, unsigned char *sig, 1503 unsigned int *siglen, 1504 const BIGNUM *kinv, const BIGNUM *r, 1505 EC_KEY *eckey), 1506 int (*sign_setup)(EC_KEY *eckey, BN_CTX *ctx_in, 1507 BIGNUM **kinvp, BIGNUM **rp), 1508 ECDSA_SIG *(*sign_sig)(const unsigned char *dgst, 1509 int dgst_len, 1510 const BIGNUM *in_kinv, 1511 const BIGNUM *in_r, 1512 EC_KEY *eckey)); 1513 1514 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_set_verify 1515 (EC_KEY_METHOD *meth, 1516 int (*verify)(int type, const unsigned 1517 char *dgst, int dgst_len, 1518 const unsigned char *sigbuf, 1519 int sig_len, EC_KEY *eckey), 1520 int (*verify_sig)(const unsigned char *dgst, 1521 int dgst_len, const ECDSA_SIG *sig, 1522 EC_KEY *eckey)); 1523 1524 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_init 1525 (const EC_KEY_METHOD *meth, 1526 int (**pinit)(EC_KEY *key), 1527 void (**pfinish)(EC_KEY *key), 1528 int (**pcopy)(EC_KEY *dest, const EC_KEY *src), 1529 int (**pset_group)(EC_KEY *key, const EC_GROUP *grp), 1530 int (**pset_private)(EC_KEY *key, const BIGNUM *priv_key), 1531 int (**pset_public)(EC_KEY *key, const EC_POINT *pub_key)); 1532 1533 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_keygen 1534 (const EC_KEY_METHOD *meth, int (**pkeygen)(EC_KEY *key)); 1535 1536 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_compute_key 1537 (const EC_KEY_METHOD *meth, 1538 int (**pck)(unsigned char **psec, 1539 size_t *pseclen, 1540 const EC_POINT *pub_key, 1541 const EC_KEY *ecdh)); 1542 1543 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_sign 1544 (const EC_KEY_METHOD *meth, 1545 int (**psign)(int type, const unsigned char *dgst, 1546 int dlen, unsigned char *sig, 1547 unsigned int *siglen, 1548 const BIGNUM *kinv, const BIGNUM *r, 1549 EC_KEY *eckey), 1550 int (**psign_setup)(EC_KEY *eckey, BN_CTX *ctx_in, 1551 BIGNUM **kinvp, BIGNUM **rp), 1552 ECDSA_SIG *(**psign_sig)(const unsigned char *dgst, 1553 int dgst_len, 1554 const BIGNUM *in_kinv, 1555 const BIGNUM *in_r, 1556 EC_KEY *eckey)); 1557 1558 OSSL_DEPRECATEDIN_3_0 void EC_KEY_METHOD_get_verify 1559 (const EC_KEY_METHOD *meth, 1560 int (**pverify)(int type, const unsigned 1561 char *dgst, int dgst_len, 1562 const unsigned char *sigbuf, 1563 int sig_len, EC_KEY *eckey), 1564 int (**pverify_sig)(const unsigned char *dgst, 1565 int dgst_len, 1566 const ECDSA_SIG *sig, 1567 EC_KEY *eckey)); 1568 # endif /* OPENSSL_NO_DEPRECATED_3_0 */ 1569 1570 # define EVP_EC_gen(curve) \ 1571 EVP_PKEY_Q_keygen(NULL, NULL, "EC", (char *)(strstr(curve, ""))) 1572 /* strstr is used to enable type checking for the variadic string arg */ 1573 # define ECParameters_dup(x) ASN1_dup_of(EC_KEY, i2d_ECParameters, \ 1574 d2i_ECParameters, x) 1575 1576 # ifndef __cplusplus 1577 # if defined(__SUNPRO_C) 1578 # if __SUNPRO_C >= 0x520 1579 # pragma error_messages (default,E_ARRAY_OF_INCOMPLETE_NONAME,E_ARRAY_OF_INCOMPLETE) 1580 # endif 1581 # endif 1582 # endif 1583 1584 # endif 1585 # ifdef __cplusplus 1586 } 1587 # endif 1588 #endif 1589