ec.h revision 352193
1/* crypto/ec/ec.h */ 2/* 3 * Originally written by Bodo Moeller for the OpenSSL project. 4 */ 5/** 6 * \file crypto/ec/ec.h Include file for the OpenSSL EC functions 7 * \author Originally written by Bodo Moeller for the OpenSSL project 8 */ 9/* ==================================================================== 10 * Copyright (c) 1998-2019 The OpenSSL Project. All rights reserved. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in 21 * the documentation and/or other materials provided with the 22 * distribution. 23 * 24 * 3. All advertising materials mentioning features or use of this 25 * software must display the following acknowledgment: 26 * "This product includes software developed by the OpenSSL Project 27 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 28 * 29 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 30 * endorse or promote products derived from this software without 31 * prior written permission. For written permission, please contact 32 * openssl-core@openssl.org. 33 * 34 * 5. Products derived from this software may not be called "OpenSSL" 35 * nor may "OpenSSL" appear in their names without prior written 36 * permission of the OpenSSL Project. 37 * 38 * 6. Redistributions of any form whatsoever must retain the following 39 * acknowledgment: 40 * "This product includes software developed by the OpenSSL Project 41 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 44 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 46 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 47 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 49 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 50 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 51 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 52 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 53 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 54 * OF THE POSSIBILITY OF SUCH DAMAGE. 55 * ==================================================================== 56 * 57 * This product includes cryptographic software written by Eric Young 58 * (eay@cryptsoft.com). This product includes software written by Tim 59 * Hudson (tjh@cryptsoft.com). 60 * 61 */ 62/* ==================================================================== 63 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 64 * 65 * Portions of the attached software ("Contribution") are developed by 66 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project. 67 * 68 * The Contribution is licensed pursuant to the OpenSSL open source 69 * license provided above. 70 * 71 * The elliptic curve binary polynomial software is originally written by 72 * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories. 73 * 74 */ 75 76#ifndef HEADER_EC_H 77# define HEADER_EC_H 78 79# include <openssl/opensslconf.h> 80 81# ifdef OPENSSL_NO_EC 82# error EC is disabled. 83# endif 84 85# include <openssl/asn1.h> 86# include <openssl/symhacks.h> 87# ifndef OPENSSL_NO_DEPRECATED 88# include <openssl/bn.h> 89# endif 90 91# ifdef __cplusplus 92extern "C" { 93# elif defined(__SUNPRO_C) 94# if __SUNPRO_C >= 0x520 95# pragma error_messages (off,E_ARRAY_OF_INCOMPLETE_NONAME,E_ARRAY_OF_INCOMPLETE) 96# endif 97# endif 98 99# ifndef OPENSSL_ECC_MAX_FIELD_BITS 100# define OPENSSL_ECC_MAX_FIELD_BITS 661 101# endif 102 103/** Enum for the point conversion form as defined in X9.62 (ECDSA) 104 * for the encoding of a elliptic curve point (x,y) */ 105typedef enum { 106 /** the point is encoded as z||x, where the octet z specifies 107 * which solution of the quadratic equation y is */ 108 POINT_CONVERSION_COMPRESSED = 2, 109 /** the point is encoded as z||x||y, where z is the octet 0x04 */ 110 POINT_CONVERSION_UNCOMPRESSED = 4, 111 /** the point is encoded as z||x||y, where the octet z specifies 112 * which solution of the quadratic equation y is */ 113 POINT_CONVERSION_HYBRID = 6 114} point_conversion_form_t; 115 116typedef struct ec_method_st EC_METHOD; 117 118typedef struct ec_group_st 119 /*- 120 EC_METHOD *meth; 121 -- field definition 122 -- curve coefficients 123 -- optional generator with associated information (order, cofactor) 124 -- optional extra data (precomputed table for fast computation of multiples of generator) 125 -- ASN1 stuff 126 */ 127 EC_GROUP; 128 129typedef struct ec_point_st EC_POINT; 130 131/********************************************************************/ 132/* EC_METHODs for curves over GF(p) */ 133/********************************************************************/ 134 135/** Returns the basic GFp ec methods which provides the basis for the 136 * optimized methods. 137 * \return EC_METHOD object 138 */ 139const EC_METHOD *EC_GFp_simple_method(void); 140 141/** Returns GFp methods using montgomery multiplication. 142 * \return EC_METHOD object 143 */ 144const EC_METHOD *EC_GFp_mont_method(void); 145 146/** Returns GFp methods using optimized methods for NIST recommended curves 147 * \return EC_METHOD object 148 */ 149const EC_METHOD *EC_GFp_nist_method(void); 150 151# ifndef OPENSSL_NO_EC_NISTP_64_GCC_128 152/** Returns 64-bit optimized methods for nistp224 153 * \return EC_METHOD object 154 */ 155const EC_METHOD *EC_GFp_nistp224_method(void); 156 157/** Returns 64-bit optimized methods for nistp256 158 * \return EC_METHOD object 159 */ 160const EC_METHOD *EC_GFp_nistp256_method(void); 161 162/** Returns 64-bit optimized methods for nistp521 163 * \return EC_METHOD object 164 */ 165const EC_METHOD *EC_GFp_nistp521_method(void); 166# endif 167 168# ifndef OPENSSL_NO_EC2M 169/********************************************************************/ 170/* EC_METHOD for curves over GF(2^m) */ 171/********************************************************************/ 172 173/** Returns the basic GF2m ec method 174 * \return EC_METHOD object 175 */ 176const EC_METHOD *EC_GF2m_simple_method(void); 177 178# endif 179 180/********************************************************************/ 181/* EC_GROUP functions */ 182/********************************************************************/ 183 184/** Creates a new EC_GROUP object 185 * \param meth EC_METHOD to use 186 * \return newly created EC_GROUP object or NULL in case of an error. 187 */ 188EC_GROUP *EC_GROUP_new(const EC_METHOD *meth); 189 190/** Frees a EC_GROUP object 191 * \param group EC_GROUP object to be freed. 192 */ 193void EC_GROUP_free(EC_GROUP *group); 194 195/** Clears and frees a EC_GROUP object 196 * \param group EC_GROUP object to be cleared and freed. 197 */ 198void EC_GROUP_clear_free(EC_GROUP *group); 199 200/** Copies EC_GROUP objects. Note: both EC_GROUPs must use the same EC_METHOD. 201 * \param dst destination EC_GROUP object 202 * \param src source EC_GROUP object 203 * \return 1 on success and 0 if an error occurred. 204 */ 205int EC_GROUP_copy(EC_GROUP *dst, const EC_GROUP *src); 206 207/** Creates a new EC_GROUP object and copies the copies the content 208 * form src to the newly created EC_KEY object 209 * \param src source EC_GROUP object 210 * \return newly created EC_GROUP object or NULL in case of an error. 211 */ 212EC_GROUP *EC_GROUP_dup(const EC_GROUP *src); 213 214/** Returns the EC_METHOD of the EC_GROUP object. 215 * \param group EC_GROUP object 216 * \return EC_METHOD used in this EC_GROUP object. 217 */ 218const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group); 219 220/** Returns the field type of the EC_METHOD. 221 * \param meth EC_METHOD object 222 * \return NID of the underlying field type OID. 223 */ 224int EC_METHOD_get_field_type(const EC_METHOD *meth); 225 226/** Sets the generator and it's order/cofactor of a EC_GROUP object. 227 * \param group EC_GROUP object 228 * \param generator EC_POINT object with the generator. 229 * \param order the order of the group generated by the generator. 230 * \param cofactor the index of the sub-group generated by the generator 231 * in the group of all points on the elliptic curve. 232 * \return 1 on success and 0 if an error occured 233 */ 234int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator, 235 const BIGNUM *order, const BIGNUM *cofactor); 236 237/** Returns the generator of a EC_GROUP object. 238 * \param group EC_GROUP object 239 * \return the currently used generator (possibly NULL). 240 */ 241const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group); 242 243/** Returns the montgomery data for order(Generator) 244 * \param group EC_GROUP object 245 * \return the currently used generator (possibly NULL). 246*/ 247BN_MONT_CTX *EC_GROUP_get_mont_data(const EC_GROUP *group); 248 249/** Gets the order of a EC_GROUP 250 * \param group EC_GROUP object 251 * \param order BIGNUM to which the order is copied 252 * \param ctx BN_CTX object (optional) 253 * \return 1 on success and 0 if an error occured 254 */ 255int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx); 256 257/** Gets the cofactor of a EC_GROUP 258 * \param group EC_GROUP object 259 * \param cofactor BIGNUM to which the cofactor is copied 260 * \param ctx BN_CTX object (optional) 261 * \return 1 on success and 0 if an error occured 262 */ 263int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor, 264 BN_CTX *ctx); 265 266/** Sets the name of a EC_GROUP object 267 * \param group EC_GROUP object 268 * \param nid NID of the curve name OID 269 */ 270void EC_GROUP_set_curve_name(EC_GROUP *group, int nid); 271 272/** Returns the curve name of a EC_GROUP object 273 * \param group EC_GROUP object 274 * \return NID of the curve name OID or 0 if not set. 275 */ 276int EC_GROUP_get_curve_name(const EC_GROUP *group); 277 278void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag); 279int EC_GROUP_get_asn1_flag(const EC_GROUP *group); 280 281void EC_GROUP_set_point_conversion_form(EC_GROUP *group, 282 point_conversion_form_t form); 283point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *); 284 285unsigned char *EC_GROUP_get0_seed(const EC_GROUP *x); 286size_t EC_GROUP_get_seed_len(const EC_GROUP *); 287size_t EC_GROUP_set_seed(EC_GROUP *, const unsigned char *, size_t len); 288 289/** Sets the parameter of a ec over GFp defined by y^2 = x^3 + a*x + b 290 * \param group EC_GROUP object 291 * \param p BIGNUM with the prime number 292 * \param a BIGNUM with parameter a of the equation 293 * \param b BIGNUM with parameter b of the equation 294 * \param ctx BN_CTX object (optional) 295 * \return 1 on success and 0 if an error occured 296 */ 297int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, 298 const BIGNUM *b, BN_CTX *ctx); 299 300/** Gets the parameter of the ec over GFp defined by y^2 = x^3 + a*x + b 301 * \param group EC_GROUP object 302 * \param p BIGNUM for the prime number 303 * \param a BIGNUM for parameter a of the equation 304 * \param b BIGNUM for parameter b of the equation 305 * \param ctx BN_CTX object (optional) 306 * \return 1 on success and 0 if an error occured 307 */ 308int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, 309 BIGNUM *b, BN_CTX *ctx); 310 311# ifndef OPENSSL_NO_EC2M 312/** Sets the parameter of a ec over GF2m defined by y^2 + x*y = x^3 + a*x^2 + b 313 * \param group EC_GROUP object 314 * \param p BIGNUM with the polynomial defining the underlying field 315 * \param a BIGNUM with parameter a of the equation 316 * \param b BIGNUM with parameter b of the equation 317 * \param ctx BN_CTX object (optional) 318 * \return 1 on success and 0 if an error occured 319 */ 320int EC_GROUP_set_curve_GF2m(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, 321 const BIGNUM *b, BN_CTX *ctx); 322 323/** Gets the parameter of the ec over GF2m defined by y^2 + x*y = x^3 + a*x^2 + b 324 * \param group EC_GROUP object 325 * \param p BIGNUM for the polynomial defining the underlying field 326 * \param a BIGNUM for parameter a of the equation 327 * \param b BIGNUM for parameter b of the equation 328 * \param ctx BN_CTX object (optional) 329 * \return 1 on success and 0 if an error occured 330 */ 331int EC_GROUP_get_curve_GF2m(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, 332 BIGNUM *b, BN_CTX *ctx); 333# endif 334/** Returns the number of bits needed to represent a field element 335 * \param group EC_GROUP object 336 * \return number of bits needed to represent a field element 337 */ 338int EC_GROUP_get_degree(const EC_GROUP *group); 339 340/** Checks whether the parameter in the EC_GROUP define a valid ec group 341 * \param group EC_GROUP object 342 * \param ctx BN_CTX object (optional) 343 * \return 1 if group is a valid ec group and 0 otherwise 344 */ 345int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx); 346 347/** Checks whether the discriminant of the elliptic curve is zero or not 348 * \param group EC_GROUP object 349 * \param ctx BN_CTX object (optional) 350 * \return 1 if the discriminant is not zero and 0 otherwise 351 */ 352int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx); 353 354/** Compares two EC_GROUP objects 355 * \param a first EC_GROUP object 356 * \param b second EC_GROUP object 357 * \param ctx BN_CTX object (optional) 358 * \return 0 if both groups are equal and 1 otherwise 359 */ 360int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ctx); 361 362/* 363 * EC_GROUP_new_GF*() calls EC_GROUP_new() and EC_GROUP_set_GF*() after 364 * choosing an appropriate EC_METHOD 365 */ 366 367/** Creates a new EC_GROUP object with the specified parameters defined 368 * over GFp (defined by the equation y^2 = x^3 + a*x + b) 369 * \param p BIGNUM with the prime number 370 * \param a BIGNUM with the parameter a of the equation 371 * \param b BIGNUM with the parameter b of the equation 372 * \param ctx BN_CTX object (optional) 373 * \return newly created EC_GROUP object with the specified parameters 374 */ 375EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a, 376 const BIGNUM *b, BN_CTX *ctx); 377# ifndef OPENSSL_NO_EC2M 378/** Creates a new EC_GROUP object with the specified parameters defined 379 * over GF2m (defined by the equation y^2 + x*y = x^3 + a*x^2 + b) 380 * \param p BIGNUM with the polynomial defining the underlying field 381 * \param a BIGNUM with the parameter a of the equation 382 * \param b BIGNUM with the parameter b of the equation 383 * \param ctx BN_CTX object (optional) 384 * \return newly created EC_GROUP object with the specified parameters 385 */ 386EC_GROUP *EC_GROUP_new_curve_GF2m(const BIGNUM *p, const BIGNUM *a, 387 const BIGNUM *b, BN_CTX *ctx); 388# endif 389/** Creates a EC_GROUP object with a curve specified by a NID 390 * \param nid NID of the OID of the curve name 391 * \return newly created EC_GROUP object with specified curve or NULL 392 * if an error occurred 393 */ 394EC_GROUP *EC_GROUP_new_by_curve_name(int nid); 395 396/********************************************************************/ 397/* handling of internal curves */ 398/********************************************************************/ 399 400typedef struct { 401 int nid; 402 const char *comment; 403} EC_builtin_curve; 404 405/* 406 * EC_builtin_curves(EC_builtin_curve *r, size_t size) returns number of all 407 * available curves or zero if a error occurred. In case r ist not zero 408 * nitems EC_builtin_curve structures are filled with the data of the first 409 * nitems internal groups 410 */ 411size_t EC_get_builtin_curves(EC_builtin_curve *r, size_t nitems); 412 413const char *EC_curve_nid2nist(int nid); 414int EC_curve_nist2nid(const char *name); 415 416/********************************************************************/ 417/* EC_POINT functions */ 418/********************************************************************/ 419 420/** Creates a new EC_POINT object for the specified EC_GROUP 421 * \param group EC_GROUP the underlying EC_GROUP object 422 * \return newly created EC_POINT object or NULL if an error occurred 423 */ 424EC_POINT *EC_POINT_new(const EC_GROUP *group); 425 426/** Frees a EC_POINT object 427 * \param point EC_POINT object to be freed 428 */ 429void EC_POINT_free(EC_POINT *point); 430 431/** Clears and frees a EC_POINT object 432 * \param point EC_POINT object to be cleared and freed 433 */ 434void EC_POINT_clear_free(EC_POINT *point); 435 436/** Copies EC_POINT object 437 * \param dst destination EC_POINT object 438 * \param src source EC_POINT object 439 * \return 1 on success and 0 if an error occured 440 */ 441int EC_POINT_copy(EC_POINT *dst, const EC_POINT *src); 442 443/** Creates a new EC_POINT object and copies the content of the supplied 444 * EC_POINT 445 * \param src source EC_POINT object 446 * \param group underlying the EC_GROUP object 447 * \return newly created EC_POINT object or NULL if an error occurred 448 */ 449EC_POINT *EC_POINT_dup(const EC_POINT *src, const EC_GROUP *group); 450 451/** Returns the EC_METHOD used in EC_POINT object 452 * \param point EC_POINT object 453 * \return the EC_METHOD used 454 */ 455const EC_METHOD *EC_POINT_method_of(const EC_POINT *point); 456 457/** Sets a point to infinity (neutral element) 458 * \param group underlying EC_GROUP object 459 * \param point EC_POINT to set to infinity 460 * \return 1 on success and 0 if an error occured 461 */ 462int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point); 463 464/** Sets the jacobian projective coordinates of a EC_POINT over GFp 465 * \param group underlying EC_GROUP object 466 * \param p EC_POINT object 467 * \param x BIGNUM with the x-coordinate 468 * \param y BIGNUM with the y-coordinate 469 * \param z BIGNUM with the z-coordinate 470 * \param ctx BN_CTX object (optional) 471 * \return 1 on success and 0 if an error occured 472 */ 473int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group, 474 EC_POINT *p, const BIGNUM *x, 475 const BIGNUM *y, const BIGNUM *z, 476 BN_CTX *ctx); 477 478/** Gets the jacobian projective coordinates of a EC_POINT over GFp 479 * \param group underlying EC_GROUP object 480 * \param p EC_POINT object 481 * \param x BIGNUM for the x-coordinate 482 * \param y BIGNUM for the y-coordinate 483 * \param z BIGNUM for the z-coordinate 484 * \param ctx BN_CTX object (optional) 485 * \return 1 on success and 0 if an error occured 486 */ 487int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group, 488 const EC_POINT *p, BIGNUM *x, 489 BIGNUM *y, BIGNUM *z, 490 BN_CTX *ctx); 491 492/** Sets the affine coordinates of a EC_POINT over GFp 493 * \param group underlying EC_GROUP object 494 * \param p EC_POINT object 495 * \param x BIGNUM with the x-coordinate 496 * \param y BIGNUM with the y-coordinate 497 * \param ctx BN_CTX object (optional) 498 * \return 1 on success and 0 if an error occured 499 */ 500int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, EC_POINT *p, 501 const BIGNUM *x, const BIGNUM *y, 502 BN_CTX *ctx); 503 504/** Gets the affine coordinates of a EC_POINT over GFp 505 * \param group underlying EC_GROUP object 506 * \param p EC_POINT object 507 * \param x BIGNUM for the x-coordinate 508 * \param y BIGNUM for the y-coordinate 509 * \param ctx BN_CTX object (optional) 510 * \return 1 on success and 0 if an error occured 511 */ 512int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group, 513 const EC_POINT *p, BIGNUM *x, 514 BIGNUM *y, BN_CTX *ctx); 515 516/** Sets the x9.62 compressed coordinates of a EC_POINT over GFp 517 * \param group underlying EC_GROUP object 518 * \param p EC_POINT object 519 * \param x BIGNUM with x-coordinate 520 * \param y_bit integer with the y-Bit (either 0 or 1) 521 * \param ctx BN_CTX object (optional) 522 * \return 1 on success and 0 if an error occured 523 */ 524int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group, 525 EC_POINT *p, const BIGNUM *x, 526 int y_bit, BN_CTX *ctx); 527# ifndef OPENSSL_NO_EC2M 528/** Sets the affine coordinates of a EC_POINT over GF2m 529 * \param group underlying EC_GROUP object 530 * \param p EC_POINT object 531 * \param x BIGNUM with the x-coordinate 532 * \param y BIGNUM with the y-coordinate 533 * \param ctx BN_CTX object (optional) 534 * \return 1 on success and 0 if an error occured 535 */ 536int EC_POINT_set_affine_coordinates_GF2m(const EC_GROUP *group, EC_POINT *p, 537 const BIGNUM *x, const BIGNUM *y, 538 BN_CTX *ctx); 539 540/** Gets the affine coordinates of a EC_POINT over GF2m 541 * \param group underlying EC_GROUP object 542 * \param p EC_POINT object 543 * \param x BIGNUM for the x-coordinate 544 * \param y BIGNUM for the y-coordinate 545 * \param ctx BN_CTX object (optional) 546 * \return 1 on success and 0 if an error occured 547 */ 548int EC_POINT_get_affine_coordinates_GF2m(const EC_GROUP *group, 549 const EC_POINT *p, BIGNUM *x, 550 BIGNUM *y, BN_CTX *ctx); 551 552/** Sets the x9.62 compressed coordinates of a EC_POINT over GF2m 553 * \param group underlying EC_GROUP object 554 * \param p EC_POINT object 555 * \param x BIGNUM with x-coordinate 556 * \param y_bit integer with the y-Bit (either 0 or 1) 557 * \param ctx BN_CTX object (optional) 558 * \return 1 on success and 0 if an error occured 559 */ 560int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP *group, 561 EC_POINT *p, const BIGNUM *x, 562 int y_bit, BN_CTX *ctx); 563# endif 564/** Encodes a EC_POINT object to a octet string 565 * \param group underlying EC_GROUP object 566 * \param p EC_POINT object 567 * \param form point conversion form 568 * \param buf memory buffer for the result. If NULL the function returns 569 * required buffer size. 570 * \param len length of the memory buffer 571 * \param ctx BN_CTX object (optional) 572 * \return the length of the encoded octet string or 0 if an error occurred 573 */ 574size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *p, 575 point_conversion_form_t form, 576 unsigned char *buf, size_t len, BN_CTX *ctx); 577 578/** Decodes a EC_POINT from a octet string 579 * \param group underlying EC_GROUP object 580 * \param p EC_POINT object 581 * \param buf memory buffer with the encoded ec point 582 * \param len length of the encoded ec point 583 * \param ctx BN_CTX object (optional) 584 * \return 1 on success and 0 if an error occured 585 */ 586int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *p, 587 const unsigned char *buf, size_t len, BN_CTX *ctx); 588 589/* other interfaces to point2oct/oct2point: */ 590BIGNUM *EC_POINT_point2bn(const EC_GROUP *, const EC_POINT *, 591 point_conversion_form_t form, BIGNUM *, BN_CTX *); 592EC_POINT *EC_POINT_bn2point(const EC_GROUP *, const BIGNUM *, 593 EC_POINT *, BN_CTX *); 594char *EC_POINT_point2hex(const EC_GROUP *, const EC_POINT *, 595 point_conversion_form_t form, BN_CTX *); 596EC_POINT *EC_POINT_hex2point(const EC_GROUP *, const char *, 597 EC_POINT *, BN_CTX *); 598 599/********************************************************************/ 600/* functions for doing EC_POINT arithmetic */ 601/********************************************************************/ 602 603/** Computes the sum of two EC_POINT 604 * \param group underlying EC_GROUP object 605 * \param r EC_POINT object for the result (r = a + b) 606 * \param a EC_POINT object with the first summand 607 * \param b EC_POINT object with the second summand 608 * \param ctx BN_CTX object (optional) 609 * \return 1 on success and 0 if an error occured 610 */ 611int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, 612 const EC_POINT *b, BN_CTX *ctx); 613 614/** Computes the double of a EC_POINT 615 * \param group underlying EC_GROUP object 616 * \param r EC_POINT object for the result (r = 2 * a) 617 * \param a EC_POINT object 618 * \param ctx BN_CTX object (optional) 619 * \return 1 on success and 0 if an error occured 620 */ 621int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, 622 BN_CTX *ctx); 623 624/** Computes the inverse of a EC_POINT 625 * \param group underlying EC_GROUP object 626 * \param a EC_POINT object to be inverted (it's used for the result as well) 627 * \param ctx BN_CTX object (optional) 628 * \return 1 on success and 0 if an error occured 629 */ 630int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx); 631 632/** Checks whether the point is the neutral element of the group 633 * \param group the underlying EC_GROUP object 634 * \param p EC_POINT object 635 * \return 1 if the point is the neutral element and 0 otherwise 636 */ 637int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *p); 638 639/** Checks whether the point is on the curve 640 * \param group underlying EC_GROUP object 641 * \param point EC_POINT object to check 642 * \param ctx BN_CTX object (optional) 643 * \return 1 if point if on the curve and 0 otherwise 644 */ 645int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point, 646 BN_CTX *ctx); 647 648/** Compares two EC_POINTs 649 * \param group underlying EC_GROUP object 650 * \param a first EC_POINT object 651 * \param b second EC_POINT object 652 * \param ctx BN_CTX object (optional) 653 * \return 0 if both points are equal and a value != 0 otherwise 654 */ 655int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b, 656 BN_CTX *ctx); 657 658int EC_POINT_make_affine(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx); 659int EC_POINTs_make_affine(const EC_GROUP *group, size_t num, 660 EC_POINT *points[], BN_CTX *ctx); 661 662/** Computes r = generator * n sum_{i=0}^{num-1} p[i] * m[i] 663 * \param group underlying EC_GROUP object 664 * \param r EC_POINT object for the result 665 * \param n BIGNUM with the multiplier for the group generator (optional) 666 * \param num number futher summands 667 * \param p array of size num of EC_POINT objects 668 * \param m array of size num of BIGNUM objects 669 * \param ctx BN_CTX object (optional) 670 * \return 1 on success and 0 if an error occured 671 */ 672int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n, 673 size_t num, const EC_POINT *p[], const BIGNUM *m[], 674 BN_CTX *ctx); 675 676/** Computes r = generator * n + q * m 677 * \param group underlying EC_GROUP object 678 * \param r EC_POINT object for the result 679 * \param n BIGNUM with the multiplier for the group generator (optional) 680 * \param q EC_POINT object with the first factor of the second summand 681 * \param m BIGNUM with the second factor of the second summand 682 * \param ctx BN_CTX object (optional) 683 * \return 1 on success and 0 if an error occured 684 */ 685int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n, 686 const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx); 687 688/** Stores multiples of generator for faster point multiplication 689 * \param group EC_GROUP object 690 * \param ctx BN_CTX object (optional) 691 * \return 1 on success and 0 if an error occured 692 */ 693int EC_GROUP_precompute_mult(EC_GROUP *group, BN_CTX *ctx); 694 695/** Reports whether a precomputation has been done 696 * \param group EC_GROUP object 697 * \return 1 if a pre-computation has been done and 0 otherwise 698 */ 699int EC_GROUP_have_precompute_mult(const EC_GROUP *group); 700 701/********************************************************************/ 702/* ASN1 stuff */ 703/********************************************************************/ 704 705/* 706 * EC_GROUP_get_basis_type() returns the NID of the basis type used to 707 * represent the field elements 708 */ 709int EC_GROUP_get_basis_type(const EC_GROUP *); 710# ifndef OPENSSL_NO_EC2M 711int EC_GROUP_get_trinomial_basis(const EC_GROUP *, unsigned int *k); 712int EC_GROUP_get_pentanomial_basis(const EC_GROUP *, unsigned int *k1, 713 unsigned int *k2, unsigned int *k3); 714# endif 715 716# define OPENSSL_EC_NAMED_CURVE 0x001 717 718typedef struct ecpk_parameters_st ECPKPARAMETERS; 719 720EC_GROUP *d2i_ECPKParameters(EC_GROUP **, const unsigned char **in, long len); 721int i2d_ECPKParameters(const EC_GROUP *, unsigned char **out); 722 723# define d2i_ECPKParameters_bio(bp,x) ASN1_d2i_bio_of(EC_GROUP,NULL,d2i_ECPKParameters,bp,x) 724# define i2d_ECPKParameters_bio(bp,x) ASN1_i2d_bio_of_const(EC_GROUP,i2d_ECPKParameters,bp,x) 725# define d2i_ECPKParameters_fp(fp,x) (EC_GROUP *)ASN1_d2i_fp(NULL, \ 726 (char *(*)())d2i_ECPKParameters,(fp),(unsigned char **)(x)) 727# define i2d_ECPKParameters_fp(fp,x) ASN1_i2d_fp(i2d_ECPKParameters,(fp), \ 728 (unsigned char *)(x)) 729 730# ifndef OPENSSL_NO_BIO 731int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off); 732# endif 733# ifndef OPENSSL_NO_FP_API 734int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off); 735# endif 736 737/********************************************************************/ 738/* EC_KEY functions */ 739/********************************************************************/ 740 741typedef struct ec_key_st EC_KEY; 742 743/* some values for the encoding_flag */ 744# define EC_PKEY_NO_PARAMETERS 0x001 745# define EC_PKEY_NO_PUBKEY 0x002 746 747/* some values for the flags field */ 748# define EC_FLAG_NON_FIPS_ALLOW 0x1 749# define EC_FLAG_FIPS_CHECKED 0x2 750 751/** Creates a new EC_KEY object. 752 * \return EC_KEY object or NULL if an error occurred. 753 */ 754EC_KEY *EC_KEY_new(void); 755 756int EC_KEY_get_flags(const EC_KEY *key); 757 758void EC_KEY_set_flags(EC_KEY *key, int flags); 759 760void EC_KEY_clear_flags(EC_KEY *key, int flags); 761 762/** Creates a new EC_KEY object using a named curve as underlying 763 * EC_GROUP object. 764 * \param nid NID of the named curve. 765 * \return EC_KEY object or NULL if an error occurred. 766 */ 767EC_KEY *EC_KEY_new_by_curve_name(int nid); 768 769/** Frees a EC_KEY object. 770 * \param key EC_KEY object to be freed. 771 */ 772void EC_KEY_free(EC_KEY *key); 773 774/** Copies a EC_KEY object. 775 * \param dst destination EC_KEY object 776 * \param src src EC_KEY object 777 * \return dst or NULL if an error occurred. 778 */ 779EC_KEY *EC_KEY_copy(EC_KEY *dst, const EC_KEY *src); 780 781/** Creates a new EC_KEY object and copies the content from src to it. 782 * \param src the source EC_KEY object 783 * \return newly created EC_KEY object or NULL if an error occurred. 784 */ 785EC_KEY *EC_KEY_dup(const EC_KEY *src); 786 787/** Increases the internal reference count of a EC_KEY object. 788 * \param key EC_KEY object 789 * \return 1 on success and 0 if an error occurred. 790 */ 791int EC_KEY_up_ref(EC_KEY *key); 792 793/** Returns the EC_GROUP object of a EC_KEY object 794 * \param key EC_KEY object 795 * \return the EC_GROUP object (possibly NULL). 796 */ 797const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key); 798 799/** Sets the EC_GROUP of a EC_KEY object. 800 * \param key EC_KEY object 801 * \param group EC_GROUP to use in the EC_KEY object (note: the EC_KEY 802 * object will use an own copy of the EC_GROUP). 803 * \return 1 on success and 0 if an error occurred. 804 */ 805int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group); 806 807/** Returns the private key of a EC_KEY object. 808 * \param key EC_KEY object 809 * \return a BIGNUM with the private key (possibly NULL). 810 */ 811const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key); 812 813/** Sets the private key of a EC_KEY object. 814 * \param key EC_KEY object 815 * \param prv BIGNUM with the private key (note: the EC_KEY object 816 * will use an own copy of the BIGNUM). 817 * \return 1 on success and 0 if an error occurred. 818 */ 819int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *prv); 820 821/** Returns the public key of a EC_KEY object. 822 * \param key the EC_KEY object 823 * \return a EC_POINT object with the public key (possibly NULL) 824 */ 825const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key); 826 827/** Sets the public key of a EC_KEY object. 828 * \param key EC_KEY object 829 * \param pub EC_POINT object with the public key (note: the EC_KEY object 830 * will use an own copy of the EC_POINT object). 831 * \return 1 on success and 0 if an error occurred. 832 */ 833int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub); 834 835unsigned EC_KEY_get_enc_flags(const EC_KEY *key); 836void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags); 837point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key); 838void EC_KEY_set_conv_form(EC_KEY *eckey, point_conversion_form_t cform); 839/* functions to set/get method specific data */ 840void *EC_KEY_get_key_method_data(EC_KEY *key, 841 void *(*dup_func) (void *), 842 void (*free_func) (void *), 843 void (*clear_free_func) (void *)); 844/** Sets the key method data of an EC_KEY object, if none has yet been set. 845 * \param key EC_KEY object 846 * \param data opaque data to install. 847 * \param dup_func a function that duplicates |data|. 848 * \param free_func a function that frees |data|. 849 * \param clear_free_func a function that wipes and frees |data|. 850 * \return the previously set data pointer, or NULL if |data| was inserted. 851 */ 852void *EC_KEY_insert_key_method_data(EC_KEY *key, void *data, 853 void *(*dup_func) (void *), 854 void (*free_func) (void *), 855 void (*clear_free_func) (void *)); 856/* wrapper functions for the underlying EC_GROUP object */ 857void EC_KEY_set_asn1_flag(EC_KEY *eckey, int asn1_flag); 858 859/** Creates a table of pre-computed multiples of the generator to 860 * accelerate further EC_KEY operations. 861 * \param key EC_KEY object 862 * \param ctx BN_CTX object (optional) 863 * \return 1 on success and 0 if an error occurred. 864 */ 865int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx); 866 867/** Creates a new ec private (and optional a new public) key. 868 * \param key EC_KEY object 869 * \return 1 on success and 0 if an error occurred. 870 */ 871int EC_KEY_generate_key(EC_KEY *key); 872 873/** Verifies that a private and/or public key is valid. 874 * \param key the EC_KEY object 875 * \return 1 on success and 0 otherwise. 876 */ 877int EC_KEY_check_key(const EC_KEY *key); 878 879/** Sets a public key from affine coordindates performing 880 * neccessary NIST PKV tests. 881 * \param key the EC_KEY object 882 * \param x public key x coordinate 883 * \param y public key y coordinate 884 * \return 1 on success and 0 otherwise. 885 */ 886int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x, 887 BIGNUM *y); 888 889/********************************************************************/ 890/* de- and encoding functions for SEC1 ECPrivateKey */ 891/********************************************************************/ 892 893/** Decodes a private key from a memory buffer. 894 * \param key a pointer to a EC_KEY object which should be used (or NULL) 895 * \param in pointer to memory with the DER encoded private key 896 * \param len length of the DER encoded private key 897 * \return the decoded private key or NULL if an error occurred. 898 */ 899EC_KEY *d2i_ECPrivateKey(EC_KEY **key, const unsigned char **in, long len); 900 901/** Encodes a private key object and stores the result in a buffer. 902 * \param key the EC_KEY object to encode 903 * \param out the buffer for the result (if NULL the function returns number 904 * of bytes needed). 905 * \return 1 on success and 0 if an error occurred. 906 */ 907int i2d_ECPrivateKey(EC_KEY *key, unsigned char **out); 908 909/********************************************************************/ 910/* de- and encoding functions for EC parameters */ 911/********************************************************************/ 912 913/** Decodes ec parameter from a memory buffer. 914 * \param key a pointer to a EC_KEY object which should be used (or NULL) 915 * \param in pointer to memory with the DER encoded ec parameters 916 * \param len length of the DER encoded ec parameters 917 * \return a EC_KEY object with the decoded parameters or NULL if an error 918 * occurred. 919 */ 920EC_KEY *d2i_ECParameters(EC_KEY **key, const unsigned char **in, long len); 921 922/** Encodes ec parameter and stores the result in a buffer. 923 * \param key the EC_KEY object with ec paramters to encode 924 * \param out the buffer for the result (if NULL the function returns number 925 * of bytes needed). 926 * \return 1 on success and 0 if an error occurred. 927 */ 928int i2d_ECParameters(EC_KEY *key, unsigned char **out); 929 930/********************************************************************/ 931/* de- and encoding functions for EC public key */ 932/* (octet string, not DER -- hence 'o2i' and 'i2o') */ 933/********************************************************************/ 934 935/** Decodes a ec public key from a octet string. 936 * \param key a pointer to a EC_KEY object which should be used 937 * \param in memory buffer with the encoded public key 938 * \param len length of the encoded public key 939 * \return EC_KEY object with decoded public key or NULL if an error 940 * occurred. 941 */ 942EC_KEY *o2i_ECPublicKey(EC_KEY **key, const unsigned char **in, long len); 943 944/** Encodes a ec public key in an octet string. 945 * \param key the EC_KEY object with the public key 946 * \param out the buffer for the result (if NULL the function returns number 947 * of bytes needed). 948 * \return 1 on success and 0 if an error occurred 949 */ 950int i2o_ECPublicKey(EC_KEY *key, unsigned char **out); 951 952# ifndef OPENSSL_NO_BIO 953/** Prints out the ec parameters on human readable form. 954 * \param bp BIO object to which the information is printed 955 * \param key EC_KEY object 956 * \return 1 on success and 0 if an error occurred 957 */ 958int ECParameters_print(BIO *bp, const EC_KEY *key); 959 960/** Prints out the contents of a EC_KEY object 961 * \param bp BIO object to which the information is printed 962 * \param key EC_KEY object 963 * \param off line offset 964 * \return 1 on success and 0 if an error occurred 965 */ 966int EC_KEY_print(BIO *bp, const EC_KEY *key, int off); 967 968# endif 969# ifndef OPENSSL_NO_FP_API 970/** Prints out the ec parameters on human readable form. 971 * \param fp file descriptor to which the information is printed 972 * \param key EC_KEY object 973 * \return 1 on success and 0 if an error occurred 974 */ 975int ECParameters_print_fp(FILE *fp, const EC_KEY *key); 976 977/** Prints out the contents of a EC_KEY object 978 * \param fp file descriptor to which the information is printed 979 * \param key EC_KEY object 980 * \param off line offset 981 * \return 1 on success and 0 if an error occurred 982 */ 983int EC_KEY_print_fp(FILE *fp, const EC_KEY *key, int off); 984 985# endif 986 987# define ECParameters_dup(x) ASN1_dup_of(EC_KEY,i2d_ECParameters,d2i_ECParameters,x) 988 989# ifndef __cplusplus 990# if defined(__SUNPRO_C) 991# if __SUNPRO_C >= 0x520 992# pragma error_messages (default,E_ARRAY_OF_INCOMPLETE_NONAME,E_ARRAY_OF_INCOMPLETE) 993# endif 994# endif 995# endif 996 997# define EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid) \ 998 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ 999 EVP_PKEY_OP_PARAMGEN|EVP_PKEY_OP_KEYGEN, \ 1000 EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID, nid, NULL) 1001 1002# define EVP_PKEY_CTX_set_ec_param_enc(ctx, flag) \ 1003 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ 1004 EVP_PKEY_OP_PARAMGEN|EVP_PKEY_OP_KEYGEN, \ 1005 EVP_PKEY_CTRL_EC_PARAM_ENC, flag, NULL) 1006 1007# define EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, flag) \ 1008 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ 1009 EVP_PKEY_OP_DERIVE, \ 1010 EVP_PKEY_CTRL_EC_ECDH_COFACTOR, flag, NULL) 1011 1012# define EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx) \ 1013 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ 1014 EVP_PKEY_OP_DERIVE, \ 1015 EVP_PKEY_CTRL_EC_ECDH_COFACTOR, -2, NULL) 1016 1017# define EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, kdf) \ 1018 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ 1019 EVP_PKEY_OP_DERIVE, \ 1020 EVP_PKEY_CTRL_EC_KDF_TYPE, kdf, NULL) 1021 1022# define EVP_PKEY_CTX_get_ecdh_kdf_type(ctx) \ 1023 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ 1024 EVP_PKEY_OP_DERIVE, \ 1025 EVP_PKEY_CTRL_EC_KDF_TYPE, -2, NULL) 1026 1027# define EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, md) \ 1028 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ 1029 EVP_PKEY_OP_DERIVE, \ 1030 EVP_PKEY_CTRL_EC_KDF_MD, 0, (void *)md) 1031 1032# define EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, pmd) \ 1033 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ 1034 EVP_PKEY_OP_DERIVE, \ 1035 EVP_PKEY_CTRL_GET_EC_KDF_MD, 0, (void *)pmd) 1036 1037# define EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, len) \ 1038 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ 1039 EVP_PKEY_OP_DERIVE, \ 1040 EVP_PKEY_CTRL_EC_KDF_OUTLEN, len, NULL) 1041 1042# define EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, plen) \ 1043 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ 1044 EVP_PKEY_OP_DERIVE, \ 1045 EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN, 0, (void *)plen) 1046 1047# define EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p, plen) \ 1048 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ 1049 EVP_PKEY_OP_DERIVE, \ 1050 EVP_PKEY_CTRL_EC_KDF_UKM, plen, (void *)p) 1051 1052# define EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p) \ 1053 EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \ 1054 EVP_PKEY_OP_DERIVE, \ 1055 EVP_PKEY_CTRL_GET_EC_KDF_UKM, 0, (void *)p) 1056 1057# define EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID (EVP_PKEY_ALG_CTRL + 1) 1058# define EVP_PKEY_CTRL_EC_PARAM_ENC (EVP_PKEY_ALG_CTRL + 2) 1059# define EVP_PKEY_CTRL_EC_ECDH_COFACTOR (EVP_PKEY_ALG_CTRL + 3) 1060# define EVP_PKEY_CTRL_EC_KDF_TYPE (EVP_PKEY_ALG_CTRL + 4) 1061# define EVP_PKEY_CTRL_EC_KDF_MD (EVP_PKEY_ALG_CTRL + 5) 1062# define EVP_PKEY_CTRL_GET_EC_KDF_MD (EVP_PKEY_ALG_CTRL + 6) 1063# define EVP_PKEY_CTRL_EC_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 7) 1064# define EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN (EVP_PKEY_ALG_CTRL + 8) 1065# define EVP_PKEY_CTRL_EC_KDF_UKM (EVP_PKEY_ALG_CTRL + 9) 1066# define EVP_PKEY_CTRL_GET_EC_KDF_UKM (EVP_PKEY_ALG_CTRL + 10) 1067/* KDF types */ 1068# define EVP_PKEY_ECDH_KDF_NONE 1 1069# define EVP_PKEY_ECDH_KDF_X9_62 2 1070 1071/* BEGIN ERROR CODES */ 1072/* 1073 * The following lines are auto generated by the script mkerr.pl. Any changes 1074 * made after this point may be overwritten when the script is next run. 1075 */ 1076 1077void ERR_load_EC_strings(void); 1078 1079/* Error codes for the EC functions. */ 1080 1081/* Function codes. */ 1082# define EC_F_BN_TO_FELEM 224 1083# define EC_F_COMPUTE_WNAF 143 1084# define EC_F_D2I_ECPARAMETERS 144 1085# define EC_F_D2I_ECPKPARAMETERS 145 1086# define EC_F_D2I_ECPRIVATEKEY 146 1087# define EC_F_DO_EC_KEY_PRINT 221 1088# define EC_F_ECDH_CMS_DECRYPT 238 1089# define EC_F_ECDH_CMS_SET_SHARED_INFO 239 1090# define EC_F_ECKEY_PARAM2TYPE 223 1091# define EC_F_ECKEY_PARAM_DECODE 212 1092# define EC_F_ECKEY_PRIV_DECODE 213 1093# define EC_F_ECKEY_PRIV_ENCODE 214 1094# define EC_F_ECKEY_PUB_DECODE 215 1095# define EC_F_ECKEY_PUB_ENCODE 216 1096# define EC_F_ECKEY_TYPE2PARAM 220 1097# define EC_F_ECPARAMETERS_PRINT 147 1098# define EC_F_ECPARAMETERS_PRINT_FP 148 1099# define EC_F_ECPKPARAMETERS_PRINT 149 1100# define EC_F_ECPKPARAMETERS_PRINT_FP 150 1101# define EC_F_ECP_NISTZ256_GET_AFFINE 240 1102# define EC_F_ECP_NISTZ256_MULT_PRECOMPUTE 243 1103# define EC_F_ECP_NISTZ256_POINTS_MUL 241 1104# define EC_F_ECP_NISTZ256_PRE_COMP_NEW 244 1105# define EC_F_ECP_NISTZ256_SET_WORDS 245 1106# define EC_F_ECP_NISTZ256_WINDOWED_MUL 242 1107# define EC_F_ECP_NIST_MOD_192 203 1108# define EC_F_ECP_NIST_MOD_224 204 1109# define EC_F_ECP_NIST_MOD_256 205 1110# define EC_F_ECP_NIST_MOD_521 206 1111# define EC_F_EC_ASN1_GROUP2CURVE 153 1112# define EC_F_EC_ASN1_GROUP2FIELDID 154 1113# define EC_F_EC_ASN1_GROUP2PARAMETERS 155 1114# define EC_F_EC_ASN1_GROUP2PKPARAMETERS 156 1115# define EC_F_EC_ASN1_PARAMETERS2GROUP 157 1116# define EC_F_EC_ASN1_PKPARAMETERS2GROUP 158 1117# define EC_F_EC_EX_DATA_SET_DATA 211 1118# define EC_F_EC_GF2M_MONTGOMERY_POINT_MULTIPLY 208 1119# define EC_F_EC_GF2M_SIMPLE_GROUP_CHECK_DISCRIMINANT 159 1120# define EC_F_EC_GF2M_SIMPLE_GROUP_SET_CURVE 195 1121# define EC_F_EC_GF2M_SIMPLE_OCT2POINT 160 1122# define EC_F_EC_GF2M_SIMPLE_POINT2OCT 161 1123# define EC_F_EC_GF2M_SIMPLE_POINT_GET_AFFINE_COORDINATES 162 1124# define EC_F_EC_GF2M_SIMPLE_POINT_SET_AFFINE_COORDINATES 163 1125# define EC_F_EC_GF2M_SIMPLE_SET_COMPRESSED_COORDINATES 164 1126# define EC_F_EC_GFP_MONT_FIELD_DECODE 133 1127# define EC_F_EC_GFP_MONT_FIELD_ENCODE 134 1128# define EC_F_EC_GFP_MONT_FIELD_MUL 131 1129# define EC_F_EC_GFP_MONT_FIELD_SET_TO_ONE 209 1130# define EC_F_EC_GFP_MONT_FIELD_SQR 132 1131# define EC_F_EC_GFP_MONT_GROUP_SET_CURVE 189 1132# define EC_F_EC_GFP_MONT_GROUP_SET_CURVE_GFP 135 1133# define EC_F_EC_GFP_NISTP224_GROUP_SET_CURVE 225 1134# define EC_F_EC_GFP_NISTP224_POINTS_MUL 228 1135# define EC_F_EC_GFP_NISTP224_POINT_GET_AFFINE_COORDINATES 226 1136# define EC_F_EC_GFP_NISTP256_GROUP_SET_CURVE 230 1137# define EC_F_EC_GFP_NISTP256_POINTS_MUL 231 1138# define EC_F_EC_GFP_NISTP256_POINT_GET_AFFINE_COORDINATES 232 1139# define EC_F_EC_GFP_NISTP521_GROUP_SET_CURVE 233 1140# define EC_F_EC_GFP_NISTP521_POINTS_MUL 234 1141# define EC_F_EC_GFP_NISTP521_POINT_GET_AFFINE_COORDINATES 235 1142# define EC_F_EC_GFP_NIST_FIELD_MUL 200 1143# define EC_F_EC_GFP_NIST_FIELD_SQR 201 1144# define EC_F_EC_GFP_NIST_GROUP_SET_CURVE 202 1145# define EC_F_EC_GFP_SIMPLE_GROUP_CHECK_DISCRIMINANT 165 1146# define EC_F_EC_GFP_SIMPLE_GROUP_SET_CURVE 166 1147# define EC_F_EC_GFP_SIMPLE_GROUP_SET_CURVE_GFP 100 1148# define EC_F_EC_GFP_SIMPLE_GROUP_SET_GENERATOR 101 1149# define EC_F_EC_GFP_SIMPLE_MAKE_AFFINE 102 1150# define EC_F_EC_GFP_SIMPLE_OCT2POINT 103 1151# define EC_F_EC_GFP_SIMPLE_POINT2OCT 104 1152# define EC_F_EC_GFP_SIMPLE_POINTS_MAKE_AFFINE 137 1153# define EC_F_EC_GFP_SIMPLE_POINT_GET_AFFINE_COORDINATES 167 1154# define EC_F_EC_GFP_SIMPLE_POINT_GET_AFFINE_COORDINATES_GFP 105 1155# define EC_F_EC_GFP_SIMPLE_POINT_SET_AFFINE_COORDINATES 168 1156# define EC_F_EC_GFP_SIMPLE_POINT_SET_AFFINE_COORDINATES_GFP 128 1157# define EC_F_EC_GFP_SIMPLE_SET_COMPRESSED_COORDINATES 169 1158# define EC_F_EC_GFP_SIMPLE_SET_COMPRESSED_COORDINATES_GFP 129 1159# define EC_F_EC_GROUP_CHECK 170 1160# define EC_F_EC_GROUP_CHECK_DISCRIMINANT 171 1161# define EC_F_EC_GROUP_COPY 106 1162# define EC_F_EC_GROUP_GET0_GENERATOR 139 1163# define EC_F_EC_GROUP_GET_COFACTOR 140 1164# define EC_F_EC_GROUP_GET_CURVE_GF2M 172 1165# define EC_F_EC_GROUP_GET_CURVE_GFP 130 1166# define EC_F_EC_GROUP_GET_DEGREE 173 1167# define EC_F_EC_GROUP_GET_ORDER 141 1168# define EC_F_EC_GROUP_GET_PENTANOMIAL_BASIS 193 1169# define EC_F_EC_GROUP_GET_TRINOMIAL_BASIS 194 1170# define EC_F_EC_GROUP_NEW 108 1171# define EC_F_EC_GROUP_NEW_BY_CURVE_NAME 174 1172# define EC_F_EC_GROUP_NEW_FROM_DATA 175 1173# define EC_F_EC_GROUP_PRECOMPUTE_MULT 142 1174# define EC_F_EC_GROUP_SET_CURVE_GF2M 176 1175# define EC_F_EC_GROUP_SET_CURVE_GFP 109 1176# define EC_F_EC_GROUP_SET_EXTRA_DATA 110 1177# define EC_F_EC_GROUP_SET_GENERATOR 111 1178# define EC_F_EC_KEY_CHECK_KEY 177 1179# define EC_F_EC_KEY_COPY 178 1180# define EC_F_EC_KEY_GENERATE_KEY 179 1181# define EC_F_EC_KEY_NEW 182 1182# define EC_F_EC_KEY_PRINT 180 1183# define EC_F_EC_KEY_PRINT_FP 181 1184# define EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES 229 1185# define EC_F_EC_POINTS_MAKE_AFFINE 136 1186# define EC_F_EC_POINT_ADD 112 1187# define EC_F_EC_POINT_CMP 113 1188# define EC_F_EC_POINT_COPY 114 1189# define EC_F_EC_POINT_DBL 115 1190# define EC_F_EC_POINT_GET_AFFINE_COORDINATES_GF2M 183 1191# define EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP 116 1192# define EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP 117 1193# define EC_F_EC_POINT_INVERT 210 1194# define EC_F_EC_POINT_IS_AT_INFINITY 118 1195# define EC_F_EC_POINT_IS_ON_CURVE 119 1196# define EC_F_EC_POINT_MAKE_AFFINE 120 1197# define EC_F_EC_POINT_MUL 184 1198# define EC_F_EC_POINT_NEW 121 1199# define EC_F_EC_POINT_OCT2POINT 122 1200# define EC_F_EC_POINT_POINT2OCT 123 1201# define EC_F_EC_POINT_SET_AFFINE_COORDINATES_GF2M 185 1202# define EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP 124 1203# define EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GF2M 186 1204# define EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP 125 1205# define EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP 126 1206# define EC_F_EC_POINT_SET_TO_INFINITY 127 1207# define EC_F_EC_PRE_COMP_DUP 207 1208# define EC_F_EC_PRE_COMP_NEW 196 1209# define EC_F_EC_WNAF_MUL 187 1210# define EC_F_EC_WNAF_PRECOMPUTE_MULT 188 1211# define EC_F_I2D_ECPARAMETERS 190 1212# define EC_F_I2D_ECPKPARAMETERS 191 1213# define EC_F_I2D_ECPRIVATEKEY 192 1214# define EC_F_I2O_ECPUBLICKEY 151 1215# define EC_F_NISTP224_PRE_COMP_NEW 227 1216# define EC_F_NISTP256_PRE_COMP_NEW 236 1217# define EC_F_NISTP521_PRE_COMP_NEW 237 1218# define EC_F_O2I_ECPUBLICKEY 152 1219# define EC_F_OLD_EC_PRIV_DECODE 222 1220# define EC_F_PKEY_EC_CTRL 197 1221# define EC_F_PKEY_EC_CTRL_STR 198 1222# define EC_F_PKEY_EC_DERIVE 217 1223# define EC_F_PKEY_EC_KEYGEN 199 1224# define EC_F_PKEY_EC_PARAMGEN 219 1225# define EC_F_PKEY_EC_SIGN 218 1226 1227/* Reason codes. */ 1228# define EC_R_ASN1_ERROR 115 1229# define EC_R_ASN1_UNKNOWN_FIELD 116 1230# define EC_R_BIGNUM_OUT_OF_RANGE 144 1231# define EC_R_BUFFER_TOO_SMALL 100 1232# define EC_R_COORDINATES_OUT_OF_RANGE 146 1233# define EC_R_D2I_ECPKPARAMETERS_FAILURE 117 1234# define EC_R_DECODE_ERROR 142 1235# define EC_R_DISCRIMINANT_IS_ZERO 118 1236# define EC_R_EC_GROUP_NEW_BY_NAME_FAILURE 119 1237# define EC_R_FIELD_TOO_LARGE 143 1238# define EC_R_GF2M_NOT_SUPPORTED 147 1239# define EC_R_GROUP2PKPARAMETERS_FAILURE 120 1240# define EC_R_I2D_ECPKPARAMETERS_FAILURE 121 1241# define EC_R_INCOMPATIBLE_OBJECTS 101 1242# define EC_R_INVALID_ARGUMENT 112 1243# define EC_R_INVALID_COMPRESSED_POINT 110 1244# define EC_R_INVALID_COMPRESSION_BIT 109 1245# define EC_R_INVALID_CURVE 141 1246# define EC_R_INVALID_DIGEST 151 1247# define EC_R_INVALID_DIGEST_TYPE 138 1248# define EC_R_INVALID_ENCODING 102 1249# define EC_R_INVALID_FIELD 103 1250# define EC_R_INVALID_FORM 104 1251# define EC_R_INVALID_GROUP_ORDER 122 1252# define EC_R_INVALID_PENTANOMIAL_BASIS 132 1253# define EC_R_INVALID_PRIVATE_KEY 123 1254# define EC_R_INVALID_TRINOMIAL_BASIS 137 1255# define EC_R_KDF_PARAMETER_ERROR 148 1256# define EC_R_KEYS_NOT_SET 140 1257# define EC_R_MISSING_PARAMETERS 124 1258# define EC_R_MISSING_PRIVATE_KEY 125 1259# define EC_R_NOT_A_NIST_PRIME 135 1260# define EC_R_NOT_A_SUPPORTED_NIST_PRIME 136 1261# define EC_R_NOT_IMPLEMENTED 126 1262# define EC_R_NOT_INITIALIZED 111 1263# define EC_R_NO_FIELD_MOD 133 1264# define EC_R_NO_PARAMETERS_SET 139 1265# define EC_R_PASSED_NULL_PARAMETER 134 1266# define EC_R_PEER_KEY_ERROR 149 1267# define EC_R_PKPARAMETERS2GROUP_FAILURE 127 1268# define EC_R_POINT_AT_INFINITY 106 1269# define EC_R_POINT_IS_NOT_ON_CURVE 107 1270# define EC_R_SHARED_INFO_ERROR 150 1271# define EC_R_SLOT_FULL 108 1272# define EC_R_UNDEFINED_GENERATOR 113 1273# define EC_R_UNDEFINED_ORDER 128 1274# define EC_R_UNKNOWN_COFACTOR 152 1275# define EC_R_UNKNOWN_GROUP 129 1276# define EC_R_UNKNOWN_ORDER 114 1277# define EC_R_UNSUPPORTED_FIELD 131 1278# define EC_R_WRONG_CURVE_PARAMETERS 145 1279# define EC_R_WRONG_ORDER 130 1280 1281# ifdef __cplusplus 1282} 1283# endif 1284#endif 1285