include/openssl/ec.h

   1
   2 /* crypto/ec/ec.h */
   3 /*
   4  * Originally written by Bodo Moeller for the OpenSSL project.
   5  */
   6 /**
   7  * \file crypto/ec/ec.h Include file for the OpenSSL EC functions
   8  * \author Originally written by Bodo Moeller for the OpenSSL project
   9  */
  10 /* ====================================================================
  11  * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  *
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  *
  20  * 2. Redistributions in binary form must reproduce the above copyright
  21  *    notice, this list of conditions and the following disclaimer in
  22  *    the documentation and/or other materials provided with the
  23  *    distribution.
  24  *
  25  * 3. All advertising materials mentioning features or use of this
  26  *    software must display the following acknowledgment:
  27  *    "This product includes software developed by the OpenSSL Project
  28  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  29  *
  30  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  31  *    endorse or promote products derived from this software without
  32  *    prior written permission. For written permission, please contact
  33  *    openssl-core@openssl.org.
  34  *
  35  * 5. Products derived from this software may not be called "OpenSSL"
  36  *    nor may "OpenSSL" appear in their names without prior written
  37  *    permission of the OpenSSL Project.
  38  *
  39  * 6. Redistributions of any form whatsoever must retain the following
  40  *    acknowledgment:
  41  *    "This product includes software developed by the OpenSSL Project
  42  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  45  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  47  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  48  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  49  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  50  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  51  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  52  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  53  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  54  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  55  * OF THE POSSIBILITY OF SUCH DAMAGE.
  56  * ====================================================================
  57  *
  58  * This product includes cryptographic software written by Eric Young
  59  * (eay@cryptsoft.com).  This product includes software written by Tim
  60  * Hudson (tjh@cryptsoft.com).
  61  *
  62  */
  63 /* ====================================================================
  64  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
  65  *
  66  * Portions of the attached software ("Contribution") are developed by
  67  * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
  68  *
  69  * The Contribution is licensed pursuant to the OpenSSL open source
  70  * license provided above.
  71  *
  72  * The elliptic curve binary polynomial software is originally written by
  73  * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories.
  74  *
  75  */
  76
  77 #ifndef HEADER_EC_H
  78 # define HEADER_EC_H
  79
  80 # include <openssl/opensslconf.h>
  81
  82 # ifdef OPENSSL_NO_EC
  83 #  error EC is disabled.
  84 # endif
  85
  86 # include <openssl/asn1.h>
  87 # include <openssl/symhacks.h>
  88 # ifdef OPENSSL_USE_DEPRECATED
  89 #  include <openssl/bn.h>
  90 # endif
  91
  92 # ifdef  __cplusplus
  93 extern "C" {
  94 # elif defined(__SUNPRO_C)
  95 #  if __SUNPRO_C >= 0x520
  96 #   pragma error_messages (off,E_ARRAY_OF_INCOMPLETE_NONAME,E_ARRAY_OF_INCOMPLETE)
  97 #  endif
  98 # endif
  99
 100 # ifndef OPENSSL_ECC_MAX_FIELD_BITS
 101 #  define OPENSSL_ECC_MAX_FIELD_BITS 661
 102 # endif
 103
 104 /** Enum for the point conversion form as defined in X9.62 (ECDSA)
 105  *  for the encoding of a elliptic curve point (x,y) */
 106 typedef enum {
 107         /** the point is encoded as z||x, where the octet z specifies
 108          *  which solution of the quadratic equation y is  */
 109     POINT_CONVERSION_COMPRESSED = 2,
 110         /** the point is encoded as z||x||y, where z is the octet 0x04  */
 111     POINT_CONVERSION_UNCOMPRESSED = 4,
 112         /** the point is encoded as z||x||y, where the octet z specifies
 113          *  which solution of the quadratic equation y is  */
 114     POINT_CONVERSION_HYBRID = 6
 115 } point_conversion_form_t;
 116
 117 typedef struct ec_method_st EC_METHOD;
 118
 119 typedef struct ec_group_st
 120     /*-
 121      EC_METHOD *meth;
 122      -- field definition
 123      -- curve coefficients
 124      -- optional generator with associated information (order, cofactor)
 125      -- optional extra data (precomputed table for fast computation of multiples of generator)
 126      -- ASN1 stuff
 127     */
 128     EC_GROUP;
 129
 130 typedef struct ec_point_st EC_POINT;
 131
 132 /********************************************************************/
 133 /*               EC_METHODs for curves over GF(p)                   */
 134 /********************************************************************/
 135
 136 /** Returns the basic GFp ec methods which provides the basis for the
 137  *  optimized methods.
 138  *  \return  EC_METHOD object
 139  */
 140 const EC_METHOD *EC_GFp_simple_method(void);
 141
 142 /** Returns GFp methods using montgomery multiplication.
 143  *  \return  EC_METHOD object
 144  */
 145 const EC_METHOD *EC_GFp_mont_method(void);
 146
 147 /** Returns GFp methods using optimized methods for NIST recommended curves
 148  *  \return  EC_METHOD object
 149  */
 150 const EC_METHOD *EC_GFp_nist_method(void);
 151
 152 # ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
 153 #  ifndef OPENSSL_SYS_WIN32
 154 /** Returns 64-bit optimized methods for nistp224
 155  *  \return  EC_METHOD object
 156  */
 157 const EC_METHOD *EC_GFp_nistp224_method(void);
 158
 159 /** Returns 64-bit optimized methods for nistp256
 160  *  \return  EC_METHOD object
 161  */
 162 const EC_METHOD *EC_GFp_nistp256_method(void);
 163
 164 /** Returns 64-bit optimized methods for nistp521
 165  *  \return  EC_METHOD object
 166  */
 167 const EC_METHOD *EC_GFp_nistp521_method(void);
 168 #  endif
 169 # endif
 170
 171 # ifndef OPENSSL_NO_EC2M
 172 /********************************************************************/
 173 /*           EC_METHOD for curves over GF(2^m)                      */
 174 /********************************************************************/
 175
 176 /** Returns the basic GF2m ec method
 177  *  \return  EC_METHOD object
 178  */
 179 const EC_METHOD *EC_GF2m_simple_method(void);
 180
 181 # endif
 182
 183 /********************************************************************/
 184 /*                   EC_GROUP functions                             */
 185 /********************************************************************/
 186
 187 /** Creates a new EC_GROUP object
 188  *  \param   meth  EC_METHOD to use
 189  *  \return  newly created EC_GROUP object or NULL in case of an error.
 190  */
 191 EC_GROUP *EC_GROUP_new(const EC_METHOD *meth);
 192
 193 /** Frees a EC_GROUP object
 194  *  \param  group  EC_GROUP object to be freed.
 195  */
 196 void EC_GROUP_free(EC_GROUP *group);
 197
 198 /** Clears and frees a EC_GROUP object
 199  *  \param  group  EC_GROUP object to be cleared and freed.
 200  */
 201 void EC_GROUP_clear_free(EC_GROUP *group);
 202
 203 /** Copies EC_GROUP objects. Note: both EC_GROUPs must use the same EC_METHOD.
 204  *  \param  dst  destination EC_GROUP object
 205  *  \param  src  source EC_GROUP object
 206  *  \return 1 on success and 0 if an error occurred.
 207  */
 208 int EC_GROUP_copy(EC_GROUP *dst, const EC_GROUP *src);
 209
 210 /** Creates a new EC_GROUP object and copies the copies the content
 211  *  form src to the newly created EC_KEY object
 212  *  \param  src  source EC_GROUP object
 213  *  \return newly created EC_GROUP object or NULL in case of an error.
 214  */
 215 EC_GROUP *EC_GROUP_dup(const EC_GROUP *src);
 216
 217 /** Returns the EC_METHOD of the EC_GROUP object.
 218  *  \param  group  EC_GROUP object
 219  *  \return EC_METHOD used in this EC_GROUP object.
 220  */
 221 const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group);
 222
 223 /** Returns the field type of the EC_METHOD.
 224  *  \param  meth  EC_METHOD object
 225  *  \return NID of the underlying field type OID.
 226  */
 227 int EC_METHOD_get_field_type(const EC_METHOD *meth);
 228
 229 /** Sets the generator and it's order/cofactor of a EC_GROUP object.
 230  *  \param  group      EC_GROUP object
 231  *  \param  generator  EC_POINT object with the generator.
 232  *  \param  order      the order of the group generated by the generator.
 233  *  \param  cofactor   the index of the sub-group generated by the generator
 234  *                     in the group of all points on the elliptic curve.
 235  *  \return 1 on success and 0 if an error occurred
 236  */
 237 int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator,
 238                            const BIGNUM *order, const BIGNUM *cofactor);
 239
 240 /** Returns the generator of a EC_GROUP object.
 241  *  \param  group  EC_GROUP object
 242  *  \return the currently used generator (possibly NULL).
 243  */
 244 const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group);
 245
 246 /** Returns the montgomery data for order(Generator)
 247  *  \param  group  EC_GROUP object
 248  *  \return the currently used generator (possibly NULL).
 249 */
 250 BN_MONT_CTX *EC_GROUP_get_mont_data(const EC_GROUP *group);
 251
 252 /** Gets the order of a EC_GROUP
 253  *  \param  group  EC_GROUP object
 254  *  \param  order  BIGNUM to which the order is copied
 255  *  \param  ctx    BN_CTX object (optional)
 256  *  \return 1 on success and 0 if an error occurred
 257  */
 258 int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx);
 259
 260 /** Gets the cofactor of a EC_GROUP
 261  *  \param  group     EC_GROUP object
 262  *  \param  cofactor  BIGNUM to which the cofactor is copied
 263  *  \param  ctx       BN_CTX object (optional)
 264  *  \return 1 on success and 0 if an error occurred
 265  */
 266 int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor,
 267                           BN_CTX *ctx);
 268
 269 /** Sets the name of a EC_GROUP object
 270  *  \param  group  EC_GROUP object
 271  *  \param  nid    NID of the curve name OID
 272  */
 273 void EC_GROUP_set_curve_name(EC_GROUP *group, int nid);
 274
 275 /** Returns the curve name of a EC_GROUP object
 276  *  \param  group  EC_GROUP object
 277  *  \return NID of the curve name OID or 0 if not set.
 278  */
 279 int EC_GROUP_get_curve_name(const EC_GROUP *group);
 280
 281 void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag);
 282 int EC_GROUP_get_asn1_flag(const EC_GROUP *group);
 283
 284 void EC_GROUP_set_point_conversion_form(EC_GROUP *group,
 285                                         point_conversion_form_t form);
 286 point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *);
 287
 288 unsigned char *EC_GROUP_get0_seed(const EC_GROUP *x);
 289 size_t EC_GROUP_get_seed_len(const EC_GROUP *);
 290 size_t EC_GROUP_set_seed(EC_GROUP *, const unsigned char *, size_t len);
 291
 292 /** Sets the parameter of a ec over GFp defined by y^2 = x^3 + a*x + b
 293  *  \param  group  EC_GROUP object
 294  *  \param  p      BIGNUM with the prime number
 295  *  \param  a      BIGNUM with parameter a of the equation
 296  *  \param  b      BIGNUM with parameter b of the equation
 297  *  \param  ctx    BN_CTX object (optional)
 298  *  \return 1 on success and 0 if an error occurred
 299  */
 300 int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a,
 301                            const BIGNUM *b, BN_CTX *ctx);
 302
 303 /** Gets the parameter of the ec over GFp defined by y^2 = x^3 + a*x + b
 304  *  \param  group  EC_GROUP object
 305  *  \param  p      BIGNUM for the prime number
 306  *  \param  a      BIGNUM for parameter a of the equation
 307  *  \param  b      BIGNUM for parameter b of the equation
 308  *  \param  ctx    BN_CTX object (optional)
 309  *  \return 1 on success and 0 if an error occurred
 310  */
 311 int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, BIGNUM *a,
 312                            BIGNUM *b, BN_CTX *ctx);
 313
 314 # ifndef OPENSSL_NO_EC2M
 315 /** Sets the parameter of a ec over GF2m defined by y^2 + x*y = x^3 + a*x^2 + b
 316  *  \param  group  EC_GROUP object
 317  *  \param  p      BIGNUM with the polynomial defining the underlying field
 318  *  \param  a      BIGNUM with parameter a of the equation
 319  *  \param  b      BIGNUM with parameter b of the equation
 320  *  \param  ctx    BN_CTX object (optional)
 321  *  \return 1 on success and 0 if an error occurred
 322  */
 323 int EC_GROUP_set_curve_GF2m(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a,
 324                             const BIGNUM *b, BN_CTX *ctx);
 325
 326 /** Gets the parameter of the ec over GF2m defined by y^2 + x*y = x^3 + a*x^2 + b
 327  *  \param  group  EC_GROUP object
 328  *  \param  p      BIGNUM for the polynomial defining the underlying field
 329  *  \param  a      BIGNUM for parameter a of the equation
 330  *  \param  b      BIGNUM for parameter b of the equation
 331  *  \param  ctx    BN_CTX object (optional)
 332  *  \return 1 on success and 0 if an error occurred
 333  */
 334 int EC_GROUP_get_curve_GF2m(const EC_GROUP *group, BIGNUM *p, BIGNUM *a,
 335                             BIGNUM *b, BN_CTX *ctx);
 336 # endif
 337 /** Returns the number of bits needed to represent a field element
 338  *  \param  group  EC_GROUP object
 339  *  \return number of bits needed to represent a field element
 340  */
 341 int EC_GROUP_get_degree(const EC_GROUP *group);
 342
 343 /** Checks whether the parameter in the EC_GROUP define a valid ec group
 344  *  \param  group  EC_GROUP object
 345  *  \param  ctx    BN_CTX object (optional)
 346  *  \return 1 if group is a valid ec group and 0 otherwise
 347  */
 348 int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx);
 349
 350 /** Checks whether the discriminant of the elliptic curve is zero or not
 351  *  \param  group  EC_GROUP object
 352  *  \param  ctx    BN_CTX object (optional)
 353  *  \return 1 if the discriminant is not zero and 0 otherwise
 354  */
 355 int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx);
 356
 357 /** Compares two EC_GROUP objects
 358  *  \param  a    first EC_GROUP object
 359  *  \param  b    second EC_GROUP object
 360  *  \param  ctx  BN_CTX object (optional)
 361  *  \return 0 if both groups are equal and 1 otherwise
 362  */
 363 int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ctx);
 364
 365 /*
 366  * EC_GROUP_new_GF*() calls EC_GROUP_new() and EC_GROUP_set_GF*() after
 367  * choosing an appropriate EC_METHOD
 368  */
 369
 370 /** Creates a new EC_GROUP object with the specified parameters defined
 371  *  over GFp (defined by the equation y^2 = x^3 + a*x + b)
 372  *  \param  p    BIGNUM with the prime number
 373  *  \param  a    BIGNUM with the parameter a of the equation
 374  *  \param  b    BIGNUM with the parameter b of the equation
 375  *  \param  ctx  BN_CTX object (optional)
 376  *  \return newly created EC_GROUP object with the specified parameters
 377  */
 378 EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a,
 379                                  const BIGNUM *b, BN_CTX *ctx);
 380 # ifndef OPENSSL_NO_EC2M
 381 /** Creates a new EC_GROUP object with the specified parameters defined
 382  *  over GF2m (defined by the equation y^2 + x*y = x^3 + a*x^2 + b)
 383  *  \param  p    BIGNUM with the polynomial defining the underlying field
 384  *  \param  a    BIGNUM with the parameter a of the equation
 385  *  \param  b    BIGNUM with the parameter b of the equation
 386  *  \param  ctx  BN_CTX object (optional)
 387  *  \return newly created EC_GROUP object with the specified parameters
 388  */
 389 EC_GROUP *EC_GROUP_new_curve_GF2m(const BIGNUM *p, const BIGNUM *a,
 390                                   const BIGNUM *b, BN_CTX *ctx);
 391 # endif
 392 /** Creates a EC_GROUP object with a curve specified by a NID
 393  *  \param  nid  NID of the OID of the curve name
 394  *  \return newly created EC_GROUP object with specified curve or NULL
 395  *          if an error occurred
 396  */
 397 EC_GROUP *EC_GROUP_new_by_curve_name(int nid);
 398
 399 /********************************************************************/
 400 /*               handling of internal curves                        */
 401 /********************************************************************/
 402
 403 typedef struct {
 404     int nid;
 405     const char *comment;
 406 } EC_builtin_curve;
 407
 408 /*
 409  * EC_builtin_curves(EC_builtin_curve *r, size_t size) returns number of all
 410  * available curves or zero if a error occurred. In case r ist not zero
 411  * nitems EC_builtin_curve structures are filled with the data of the first
 412  * nitems internal groups
 413  */
 414 size_t EC_get_builtin_curves(EC_builtin_curve *r, size_t nitems);
 415
 416 const char *EC_curve_nid2nist(int nid);
 417 int EC_curve_nist2nid(const char *name);
 418
 419 /********************************************************************/
 420 /*                    EC_POINT functions                            */
 421 /********************************************************************/
 422
 423 /** Creates a new EC_POINT object for the specified EC_GROUP
 424  *  \param  group  EC_GROUP the underlying EC_GROUP object
 425  *  \return newly created EC_POINT object or NULL if an error occurred
 426  */
 427 EC_POINT *EC_POINT_new(const EC_GROUP *group);
 428
 429 /** Frees a EC_POINT object
 430  *  \param  point  EC_POINT object to be freed
 431  */
 432 void EC_POINT_free(EC_POINT *point);
 433
 434 /** Clears and frees a EC_POINT object
 435  *  \param  point  EC_POINT object to be cleared and freed
 436  */
 437 void EC_POINT_clear_free(EC_POINT *point);
 438
 439 /** Copies EC_POINT object
 440  *  \param  dst  destination EC_POINT object
 441  *  \param  src  source EC_POINT object
 442  *  \return 1 on success and 0 if an error occurred
 443  */
 444 int EC_POINT_copy(EC_POINT *dst, const EC_POINT *src);
 445
 446 /** Creates a new EC_POINT object and copies the content of the supplied
 447  *  EC_POINT
 448  *  \param  src    source EC_POINT object
 449  *  \param  group  underlying the EC_GROUP object
 450  *  \return newly created EC_POINT object or NULL if an error occurred
 451  */
 452 EC_POINT *EC_POINT_dup(const EC_POINT *src, const EC_GROUP *group);
 453
 454 /** Returns the EC_METHOD used in EC_POINT object
 455  *  \param  point  EC_POINT object
 456  *  \return the EC_METHOD used
 457  */
 458 const EC_METHOD *EC_POINT_method_of(const EC_POINT *point);
 459
 460 /** Sets a point to infinity (neutral element)
 461  *  \param  group  underlying EC_GROUP object
 462  *  \param  point  EC_POINT to set to infinity
 463  *  \return 1 on success and 0 if an error occurred
 464  */
 465 int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point);
 466
 467 /** Sets the jacobian projective coordinates of a EC_POINT over GFp
 468  *  \param  group  underlying EC_GROUP object
 469  *  \param  p      EC_POINT object
 470  *  \param  x      BIGNUM with the x-coordinate
 471  *  \param  y      BIGNUM with the y-coordinate
 472  *  \param  z      BIGNUM with the z-coordinate
 473  *  \param  ctx    BN_CTX object (optional)
 474  *  \return 1 on success and 0 if an error occurred
 475  */
 476 int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group,
 477                                              EC_POINT *p, const BIGNUM *x,
 478                                              const BIGNUM *y, const BIGNUM *z,
 479                                              BN_CTX *ctx);
 480
 481 /** Gets the jacobian projective coordinates of a EC_POINT over GFp
 482  *  \param  group  underlying EC_GROUP object
 483  *  \param  p      EC_POINT object
 484  *  \param  x      BIGNUM for the x-coordinate
 485  *  \param  y      BIGNUM for the y-coordinate
 486  *  \param  z      BIGNUM for the z-coordinate
 487  *  \param  ctx    BN_CTX object (optional)
 488  *  \return 1 on success and 0 if an error occurred
 489  */
 490 int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group,
 491                                              const EC_POINT *p, BIGNUM *x,
 492                                              BIGNUM *y, BIGNUM *z,
 493                                              BN_CTX *ctx);
 494
 495 /** Sets the affine coordinates of a EC_POINT over GFp
 496  *  \param  group  underlying EC_GROUP object
 497  *  \param  p      EC_POINT object
 498  *  \param  x      BIGNUM with the x-coordinate
 499  *  \param  y      BIGNUM with the y-coordinate
 500  *  \param  ctx    BN_CTX object (optional)
 501  *  \return 1 on success and 0 if an error occurred
 502  */
 503 int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, EC_POINT *p,
 504                                         const BIGNUM *x, const BIGNUM *y,
 505                                         BN_CTX *ctx);
 506
 507 /** Gets the affine coordinates of a EC_POINT over GFp
 508  *  \param  group  underlying EC_GROUP object
 509  *  \param  p      EC_POINT object
 510  *  \param  x      BIGNUM for the x-coordinate
 511  *  \param  y      BIGNUM for the y-coordinate
 512  *  \param  ctx    BN_CTX object (optional)
 513  *  \return 1 on success and 0 if an error occurred
 514  */
 515 int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group,
 516                                         const EC_POINT *p, BIGNUM *x,
 517                                         BIGNUM *y, BN_CTX *ctx);
 518
 519 /** Sets the x9.62 compressed coordinates of a EC_POINT over GFp
 520  *  \param  group  underlying EC_GROUP object
 521  *  \param  p      EC_POINT object
 522  *  \param  x      BIGNUM with x-coordinate
 523  *  \param  y_bit  integer with the y-Bit (either 0 or 1)
 524  *  \param  ctx    BN_CTX object (optional)
 525  *  \return 1 on success and 0 if an error occurred
 526  */
 527 int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group,
 528                                             EC_POINT *p, const BIGNUM *x,
 529                                             int y_bit, BN_CTX *ctx);
 530 # ifndef OPENSSL_NO_EC2M
 531 /** Sets the affine coordinates of a EC_POINT over GF2m
 532  *  \param  group  underlying EC_GROUP object
 533  *  \param  p      EC_POINT object
 534  *  \param  x      BIGNUM with the x-coordinate
 535  *  \param  y      BIGNUM with the y-coordinate
 536  *  \param  ctx    BN_CTX object (optional)
 537  *  \return 1 on success and 0 if an error occurred
 538  */
 539 int EC_POINT_set_affine_coordinates_GF2m(const EC_GROUP *group, EC_POINT *p,
 540                                          const BIGNUM *x, const BIGNUM *y,
 541                                          BN_CTX *ctx);
 542
 543 /** Gets the affine coordinates of a EC_POINT over GF2m
 544  *  \param  group  underlying EC_GROUP object
 545  *  \param  p      EC_POINT object
 546  *  \param  x      BIGNUM for the x-coordinate
 547  *  \param  y      BIGNUM for the y-coordinate
 548  *  \param  ctx    BN_CTX object (optional)
 549  *  \return 1 on success and 0 if an error occurred
 550  */
 551 int EC_POINT_get_affine_coordinates_GF2m(const EC_GROUP *group,
 552                                          const EC_POINT *p, BIGNUM *x,
 553                                          BIGNUM *y, BN_CTX *ctx);
 554
 555 /** Sets the x9.62 compressed coordinates of a EC_POINT over GF2m
 556  *  \param  group  underlying EC_GROUP object
 557  *  \param  p      EC_POINT object
 558  *  \param  x      BIGNUM with x-coordinate
 559  *  \param  y_bit  integer with the y-Bit (either 0 or 1)
 560  *  \param  ctx    BN_CTX object (optional)
 561  *  \return 1 on success and 0 if an error occurred
 562  */
 563 int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP *group,
 564                                              EC_POINT *p, const BIGNUM *x,
 565                                              int y_bit, BN_CTX *ctx);
 566 # endif
 567 /** Encodes a EC_POINT object to a octet string
 568  *  \param  group  underlying EC_GROUP object
 569  *  \param  p      EC_POINT object
 570  *  \param  form   point conversion form
 571  *  \param  buf    memory buffer for the result. If NULL the function returns
 572  *                 required buffer size.
 573  *  \param  len    length of the memory buffer
 574  *  \param  ctx    BN_CTX object (optional)
 575  *  \return the length of the encoded octet string or 0 if an error occurred
 576  */
 577 size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *p,
 578                           point_conversion_form_t form,
 579                           unsigned char *buf, size_t len, BN_CTX *ctx);
 580
 581 /** Decodes a EC_POINT from a octet string
 582  *  \param  group  underlying EC_GROUP object
 583  *  \param  p      EC_POINT object
 584  *  \param  buf    memory buffer with the encoded ec point
 585  *  \param  len    length of the encoded ec point
 586  *  \param  ctx    BN_CTX object (optional)
 587  *  \return 1 on success and 0 if an error occurred
 588  */
 589 int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *p,
 590                        const unsigned char *buf, size_t len, BN_CTX *ctx);
 591
 592 /* other interfaces to point2oct/oct2point: */
 593 BIGNUM *EC_POINT_point2bn(const EC_GROUP *, const EC_POINT *,
 594                           point_conversion_form_t form, BIGNUM *, BN_CTX *);
 595 EC_POINT *EC_POINT_bn2point(const EC_GROUP *, const BIGNUM *,
 596                             EC_POINT *, BN_CTX *);
 597 char *EC_POINT_point2hex(const EC_GROUP *, const EC_POINT *,
 598                          point_conversion_form_t form, BN_CTX *);
 599 EC_POINT *EC_POINT_hex2point(const EC_GROUP *, const char *,
 600                              EC_POINT *, BN_CTX *);
 601
 602 /********************************************************************/
 603 /*         functions for doing EC_POINT arithmetic                  */
 604 /********************************************************************/
 605
 606 /** Computes the sum of two EC_POINT
 607  *  \param  group  underlying EC_GROUP object
 608  *  \param  r      EC_POINT object for the result (r = a + b)
 609  *  \param  a      EC_POINT object with the first summand
 610  *  \param  b      EC_POINT object with the second summand
 611  *  \param  ctx    BN_CTX object (optional)
 612  *  \return 1 on success and 0 if an error occurred
 613  */
 614 int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
 615                  const EC_POINT *b, BN_CTX *ctx);
 616
 617 /** Computes the double of a EC_POINT
 618  *  \param  group  underlying EC_GROUP object
 619  *  \param  r      EC_POINT object for the result (r = 2 * a)
 620  *  \param  a      EC_POINT object
 621  *  \param  ctx    BN_CTX object (optional)
 622  *  \return 1 on success and 0 if an error occurred
 623  */
 624 int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
 625                  BN_CTX *ctx);
 626
 627 /** Computes the inverse of a EC_POINT
 628  *  \param  group  underlying EC_GROUP object
 629  *  \param  a      EC_POINT object to be inverted (it's used for the result as well)
 630  *  \param  ctx    BN_CTX object (optional)
 631  *  \return 1 on success and 0 if an error occurred
 632  */
 633 int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx);
 634
 635 /** Checks whether the point is the neutral element of the group
 636  *  \param  group  the underlying EC_GROUP object
 637  *  \param  p      EC_POINT object
 638  *  \return 1 if the point is the neutral element and 0 otherwise
 639  */
 640 int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *p);
 641
 642 /** Checks whether the point is on the curve
 643  *  \param  group  underlying EC_GROUP object
 644  *  \param  point  EC_POINT object to check
 645  *  \param  ctx    BN_CTX object (optional)
 646  *  \return 1 if point if on the curve and 0 otherwise
 647  */
 648 int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point,
 649                          BN_CTX *ctx);
 650
 651 /** Compares two EC_POINTs
 652  *  \param  group  underlying EC_GROUP object
 653  *  \param  a      first EC_POINT object
 654  *  \param  b      second EC_POINT object
 655  *  \param  ctx    BN_CTX object (optional)
 656  *  \return 0 if both points are equal and a value != 0 otherwise
 657  */
 658 int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b,
 659                  BN_CTX *ctx);
 660
 661 int EC_POINT_make_affine(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx);
 662 int EC_POINTs_make_affine(const EC_GROUP *group, size_t num,
 663                           EC_POINT *points[], BN_CTX *ctx);
 664
 665 /** Computes r = generator * n sum_{i=0}^{num-1} p[i] * m[i]
 666  *  \param  group  underlying EC_GROUP object
 667  *  \param  r      EC_POINT object for the result
 668  *  \param  n      BIGNUM with the multiplier for the group generator (optional)
 669  *  \param  num    number futher summands
 670  *  \param  p      array of size num of EC_POINT objects
 671  *  \param  m      array of size num of BIGNUM objects
 672  *  \param  ctx    BN_CTX object (optional)
 673  *  \return 1 on success and 0 if an error occurred
 674  */
 675 int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n,
 676                   size_t num, const EC_POINT *p[], const BIGNUM *m[],
 677                   BN_CTX *ctx);
 678
 679 /** Computes r = generator * n + q * m
 680  *  \param  group  underlying EC_GROUP object
 681  *  \param  r      EC_POINT object for the result
 682  *  \param  n      BIGNUM with the multiplier for the group generator (optional)
 683  *  \param  q      EC_POINT object with the first factor of the second summand
 684  *  \param  m      BIGNUM with the second factor of the second summand
 685  *  \param  ctx    BN_CTX object (optional)
 686  *  \return 1 on success and 0 if an error occurred
 687  */
 688 int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n,
 689                  const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx);
 690
 691 /** Stores multiples of generator for faster point multiplication
 692  *  \param  group  EC_GROUP object
 693  *  \param  ctx    BN_CTX object (optional)
 694  *  \return 1 on success and 0 if an error occurred
 695  */
 696 int EC_GROUP_precompute_mult(EC_GROUP *group, BN_CTX *ctx);
 697
 698 /** Reports whether a precomputation has been done
 699  *  \param  group  EC_GROUP object
 700  *  \return 1 if a pre-computation has been done and 0 otherwise
 701  */
 702 int EC_GROUP_have_precompute_mult(const EC_GROUP *group);
 703
 704 /********************************************************************/
 705 /*                       ASN1 stuff                                 */
 706 /********************************************************************/
 707
 708 /*
 709  * EC_GROUP_get_basis_type() returns the NID of the basis type used to
 710  * represent the field elements
 711  */
 712 int EC_GROUP_get_basis_type(const EC_GROUP *);
 713 # ifndef OPENSSL_NO_EC2M
 714 int EC_GROUP_get_trinomial_basis(const EC_GROUP *, unsigned int *k);
 715 int EC_GROUP_get_pentanomial_basis(const EC_GROUP *, unsigned int *k1,
 716                                    unsigned int *k2, unsigned int *k3);
 717 # endif
 718
 719 # define OPENSSL_EC_EXPLICIT_CURVE  0x000
 720 # define OPENSSL_EC_NAMED_CURVE     0x001
 721
 722 typedef struct ecpk_parameters_st ECPKPARAMETERS;
 723
 724 EC_GROUP *d2i_ECPKParameters(EC_GROUP **, const unsigned char **in, long len);
 725 int i2d_ECPKParameters(const EC_GROUP *, unsigned char **out);
 726
 727 # define d2i_ECPKParameters_bio(bp,x) ASN1_d2i_bio_of(EC_GROUP,NULL,d2i_ECPKParameters,bp,x)
 728 # define i2d_ECPKParameters_bio(bp,x) ASN1_i2d_bio_of_const(EC_GROUP,i2d_ECPKParameters,bp,x)
 729 # define d2i_ECPKParameters_fp(fp,x) (EC_GROUP *)ASN1_d2i_fp(NULL, \
 730                 (char *(*)())d2i_ECPKParameters,(fp),(unsigned char **)(x))
 731 # define i2d_ECPKParameters_fp(fp,x) ASN1_i2d_fp(i2d_ECPKParameters,(fp), \
 732                 (unsigned char *)(x))
 733
 734 int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off);
 735 # ifndef OPENSSL_NO_STDIO
 736 int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off);
 737 # endif
 738
 739 /********************************************************************/
 740 /*                      EC_KEY functions                            */
 741 /********************************************************************/
 742
 743 typedef struct ec_key_st EC_KEY;
 744 typedef struct ec_key_method_st EC_KEY_METHOD;
 745
 746 /* some values for the encoding_flag */
 747 # define EC_PKEY_NO_PARAMETERS   0x001
 748 # define EC_PKEY_NO_PUBKEY       0x002
 749
 750 /* some values for the flags field */
 751 # define EC_FLAG_NON_FIPS_ALLOW  0x1
 752 # define EC_FLAG_FIPS_CHECKED    0x2
 753 # define EC_FLAG_COFACTOR_ECDH   0x1000
 754
 755 /** Creates a new EC_KEY object.
 756  *  \return EC_KEY object or NULL if an error occurred.
 757  */
 758 EC_KEY *EC_KEY_new(void);
 759
 760 int EC_KEY_get_flags(const EC_KEY *key);
 761
 762 void EC_KEY_set_flags(EC_KEY *key, int flags);
 763
 764 void EC_KEY_clear_flags(EC_KEY *key, int flags);
 765
 766 /** Creates a new EC_KEY object using a named curve as underlying
 767  *  EC_GROUP object.
 768  *  \param  nid  NID of the named curve.
 769  *  \return EC_KEY object or NULL if an error occurred.
 770  */
 771 EC_KEY *EC_KEY_new_by_curve_name(int nid);
 772
 773 /** Frees a EC_KEY object.
 774  *  \param  key  EC_KEY object to be freed.
 775  */
 776 void EC_KEY_free(EC_KEY *key);
 777
 778 /** Copies a EC_KEY object.
 779  *  \param  dst  destination EC_KEY object
 780  *  \param  src  src EC_KEY object
 781  *  \return dst or NULL if an error occurred.
 782  */
 783 EC_KEY *EC_KEY_copy(EC_KEY *dst, const EC_KEY *src);
 784
 785 /** Creates a new EC_KEY object and copies the content from src to it.
 786  *  \param  src  the source EC_KEY object
 787  *  \return newly created EC_KEY object or NULL if an error occurred.
 788  */
 789 EC_KEY *EC_KEY_dup(const EC_KEY *src);
 790
 791 /** Increases the internal reference count of a EC_KEY object.
 792  *  \param  key  EC_KEY object
 793  *  \return 1 on success and 0 if an error occurred.
 794  */
 795 int EC_KEY_up_ref(EC_KEY *key);
 796
 797 /** Returns the EC_GROUP object of a EC_KEY object
 798  *  \param  key  EC_KEY object
 799  *  \return the EC_GROUP object (possibly NULL).
 800  */
 801 const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key);
 802
 803 /** Sets the EC_GROUP of a EC_KEY object.
 804  *  \param  key    EC_KEY object
 805  *  \param  group  EC_GROUP to use in the EC_KEY object (note: the EC_KEY
 806  *                 object will use an own copy of the EC_GROUP).
 807  *  \return 1 on success and 0 if an error occurred.
 808  */
 809 int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group);
 810
 811 /** Returns the private key of a EC_KEY object.
 812  *  \param  key  EC_KEY object
 813  *  \return a BIGNUM with the private key (possibly NULL).
 814  */
 815 const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key);
 816
 817 /** Sets the private key of a EC_KEY object.
 818  *  \param  key  EC_KEY object
 819  *  \param  prv  BIGNUM with the private key (note: the EC_KEY object
 820  *               will use an own copy of the BIGNUM).
 821  *  \return 1 on success and 0 if an error occurred.
 822  */
 823 int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *prv);
 824
 825 /** Returns the public key of a EC_KEY object.
 826  *  \param  key  the EC_KEY object
 827  *  \return a EC_POINT object with the public key (possibly NULL)
 828  */
 829 const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key);
 830
 831 /** Sets the public key of a EC_KEY object.
 832  *  \param  key  EC_KEY object
 833  *  \param  pub  EC_POINT object with the public key (note: the EC_KEY object
 834  *               will use an own copy of the EC_POINT object).
 835  *  \return 1 on success and 0 if an error occurred.
 836  */
 837 int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub);
 838
 839 unsigned EC_KEY_get_enc_flags(const EC_KEY *key);
 840 void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags);
 841 point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key);
 842 void EC_KEY_set_conv_form(EC_KEY *eckey, point_conversion_form_t cform);
 843 /* functions to set/get method specific data  */
 844 void *EC_KEY_get_key_method_data(EC_KEY *key,
 845                                  void *(*dup_func) (void *),
 846                                  void (*free_func) (void *),
 847                                  void (*clear_free_func) (void *));
 848 /** Sets the key method data of an EC_KEY object, if none has yet been set.
 849  *  \param  key              EC_KEY object
 850  *  \param  data             opaque data to install.
 851  *  \param  dup_func         a function that duplicates |data|.
 852  *  \param  free_func        a function that frees |data|.
 853  *  \param  clear_free_func  a function that wipes and frees |data|.
 854  *  \return the previously set data pointer, or NULL if |data| was inserted.
 855  */
 856 void *EC_KEY_insert_key_method_data(EC_KEY *key, void *data,
 857                                     void *(*dup_func) (void *),
 858                                     void (*free_func) (void *),
 859                                     void (*clear_free_func) (void *));
 860 /* wrapper functions for the underlying EC_GROUP object */
 861 void EC_KEY_set_asn1_flag(EC_KEY *eckey, int asn1_flag);
 862
 863 /** Creates a table of pre-computed multiples of the generator to
 864  *  accelerate further EC_KEY operations.
 865  *  \param  key  EC_KEY object
 866  *  \param  ctx  BN_CTX object (optional)
 867  *  \return 1 on success and 0 if an error occurred.
 868  */
 869 int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx);
 870
 871 /** Creates a new ec private (and optional a new public) key.
 872  *  \param  key  EC_KEY object
 873  *  \return 1 on success and 0 if an error occurred.
 874  */
 875 int EC_KEY_generate_key(EC_KEY *key);
 876
 877 /** Verifies that a private and/or public key is valid.
 878  *  \param  key  the EC_KEY object
 879  *  \return 1 on success and 0 otherwise.
 880  */
 881 int EC_KEY_check_key(const EC_KEY *key);
 882
 883 /** Sets a public key from affine coordindates performing
 884  *  necessary NIST PKV tests.
 885  *  \param  key  the EC_KEY object
 886  *  \param  x    public key x coordinate
 887  *  \param  y    public key y coordinate
 888  *  \return 1 on success and 0 otherwise.
 889  */
 890 int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x,
 891                                              BIGNUM *y);
 892
 893 /********************************************************************/
 894 /*        de- and encoding functions for SEC1 ECPrivateKey          */
 895 /********************************************************************/
 896
 897 /** Decodes a private key from a memory buffer.
 898  *  \param  key  a pointer to a EC_KEY object which should be used (or NULL)
 899  *  \param  in   pointer to memory with the DER encoded private key
 900  *  \param  len  length of the DER encoded private key
 901  *  \return the decoded private key or NULL if an error occurred.
 902  */
 903 EC_KEY *d2i_ECPrivateKey(EC_KEY **key, const unsigned char **in, long len);
 904
 905 /** Encodes a private key object and stores the result in a buffer.
 906  *  \param  key  the EC_KEY object to encode
 907  *  \param  out  the buffer for the result (if NULL the function returns number
 908  *               of bytes needed).
 909  *  \return 1 on success and 0 if an error occurred.
 910  */
 911 int i2d_ECPrivateKey(EC_KEY *key, unsigned char **out);
 912
 913 /********************************************************************/
 914 /*        de- and encoding functions for EC parameters              */
 915 /********************************************************************/
 916
 917 /** Decodes ec parameter from a memory buffer.
 918  *  \param  key  a pointer to a EC_KEY object which should be used (or NULL)
 919  *  \param  in   pointer to memory with the DER encoded ec parameters
 920  *  \param  len  length of the DER encoded ec parameters
 921  *  \return a EC_KEY object with the decoded parameters or NULL if an error
 922  *          occurred.
 923  */
 924 EC_KEY *d2i_ECParameters(EC_KEY **key, const unsigned char **in, long len);
 925
 926 /** Encodes ec parameter and stores the result in a buffer.
 927  *  \param  key  the EC_KEY object with ec parameters to encode
 928  *  \param  out  the buffer for the result (if NULL the function returns number
 929  *               of bytes needed).
 930  *  \return 1 on success and 0 if an error occurred.
 931  */
 932 int i2d_ECParameters(EC_KEY *key, unsigned char **out);
 933
 934 /********************************************************************/
 935 /*         de- and encoding functions for EC public key             */
 936 /*         (octet string, not DER -- hence 'o2i' and 'i2o')         */
 937 /********************************************************************/
 938
 939 /** Decodes a ec public key from a octet string.
 940  *  \param  key  a pointer to a EC_KEY object which should be used
 941  *  \param  in   memory buffer with the encoded public key
 942  *  \param  len  length of the encoded public key
 943  *  \return EC_KEY object with decoded public key or NULL if an error
 944  *          occurred.
 945  */
 946 EC_KEY *o2i_ECPublicKey(EC_KEY **key, const unsigned char **in, long len);
 947
 948 /** Encodes a ec public key in an octet string.
 949  *  \param  key  the EC_KEY object with the public key
 950  *  \param  out  the buffer for the result (if NULL the function returns number
 951  *               of bytes needed).
 952  *  \return 1 on success and 0 if an error occurred
 953  */
 954 int i2o_ECPublicKey(EC_KEY *key, unsigned char **out);
 955
 956 /** Prints out the ec parameters on human readable form.
 957  *  \param  bp   BIO object to which the information is printed
 958  *  \param  key  EC_KEY object
 959  *  \return 1 on success and 0 if an error occurred
 960  */
 961 int ECParameters_print(BIO *bp, const EC_KEY *key);
 962
 963 /** Prints out the contents of a EC_KEY object
 964  *  \param  bp   BIO object to which the information is printed
 965  *  \param  key  EC_KEY object
 966  *  \param  off  line offset
 967  *  \return 1 on success and 0 if an error occurred
 968  */
 969 int EC_KEY_print(BIO *bp, const EC_KEY *key, int off);
 970
 971 # ifndef OPENSSL_NO_STDIO
 972 /** Prints out the ec parameters on human readable form.
 973  *  \param  fp   file descriptor to which the information is printed
 974  *  \param  key  EC_KEY object
 975  *  \return 1 on success and 0 if an error occurred
 976  */
 977 int ECParameters_print_fp(FILE *fp, const EC_KEY *key);
 978
 979 /** Prints out the contents of a EC_KEY object
 980  *  \param  fp   file descriptor to which the information is printed
 981  *  \param  key  EC_KEY object
 982  *  \param  off  line offset
 983  *  \return 1 on success and 0 if an error occurred
 984  */
 985 int EC_KEY_print_fp(FILE *fp, const EC_KEY *key, int off);
 986
 987 # endif
 988
 989 const EC_KEY_METHOD *EC_KEY_OpenSSL(void);
 990 const EC_KEY_METHOD *EC_KEY_get_default_method(void);
 991 void EC_KEY_set_default_method(const EC_KEY_METHOD *meth);
 992 EC_KEY *EC_KEY_new_method(ENGINE *engine);
 993
 994 int ECDH_KDF_X9_62(unsigned char *out, size_t outlen,
 995                    const unsigned char *Z, size_t Zlen,
 996                    const unsigned char *sinfo, size_t sinfolen,
 997                    const EVP_MD *md);
 998
 999 int ECDH_compute_key(void *out, size_t outlen, const EC_POINT *pub_key,
1000                      EC_KEY *ecdh, void *(*KDF) (const void *in, size_t inlen,
1001                                                  void *out, size_t *outlen));
1002
1003 typedef struct ECDSA_SIG_st ECDSA_SIG;
1004
1005 /** Allocates and initialize a ECDSA_SIG structure
1006  *  \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1007  */
1008 ECDSA_SIG *ECDSA_SIG_new(void);
1009
1010 /** frees a ECDSA_SIG structure
1011  *  \param  sig  pointer to the ECDSA_SIG structure
1012  */
1013 void ECDSA_SIG_free(ECDSA_SIG *sig);
1014
1015 /** DER encode content of ECDSA_SIG object (note: this function modifies *pp
1016  *  (*pp += length of the DER encoded signature)).
1017  *  \param  sig  pointer to the ECDSA_SIG object
1018  *  \param  pp   pointer to a unsigned char pointer for the output or NULL
1019  *  \return the length of the DER encoded ECDSA_SIG object or 0
1020  */
1021 int i2d_ECDSA_SIG(const ECDSA_SIG *sig, unsigned char **pp);
1022
1023 /** Decodes a DER encoded ECDSA signature (note: this function changes *pp
1024  *  (*pp += len)).
1025  *  \param  sig  pointer to ECDSA_SIG pointer (may be NULL)
1026  *  \param  pp   memory buffer with the DER encoded signature
1027  *  \param  len  length of the buffer
1028  *  \return pointer to the decoded ECDSA_SIG structure (or NULL)
1029  */
1030 ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **sig, const unsigned char **pp, long len);
1031
1032 /** Accessor for r and s fields of ECDSA_SIG
1033  *  \param  sig  pointer to ECDSA_SIG pointer
1034  *  \param  pr   pointer to BIGNUM pointer for r (may be NULL)
1035  *  \param  ps   pointer to BIGNUM pointer for s (may be NULL)
1036  */
1037 void ECDSA_SIG_get0(BIGNUM **pr, BIGNUM **ps, ECDSA_SIG *sig);
1038
1039 /** Computes the ECDSA signature of the given hash value using
1040  *  the supplied private key and returns the created signature.
1041  *  \param  dgst      pointer to the hash value
1042  *  \param  dgst_len  length of the hash value
1043  *  \param  eckey     EC_KEY object containing a private EC key
1044  *  \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1045  */
1046 ECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst, int dgst_len,
1047                          EC_KEY *eckey);
1048
1049 /** Computes ECDSA signature of a given hash value using the supplied
1050  *  private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1051  *  \param  dgst     pointer to the hash value to sign
1052  *  \param  dgstlen  length of the hash value
1053  *  \param  kinv     BIGNUM with a pre-computed inverse k (optional)
1054  *  \param  rp       BIGNUM with a pre-computed rp value (optioanl),
1055  *                   see ECDSA_sign_setup
1056  *  \param  eckey    EC_KEY object containing a private EC key
1057  *  \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1058  */
1059 ECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *dgst, int dgstlen,
1060                             const BIGNUM *kinv, const BIGNUM *rp,
1061                             EC_KEY *eckey);
1062
1063 /** Verifies that the supplied signature is a valid ECDSA
1064  *  signature of the supplied hash value using the supplied public key.
1065  *  \param  dgst      pointer to the hash value
1066  *  \param  dgst_len  length of the hash value
1067  *  \param  sig       ECDSA_SIG structure
1068  *  \param  eckey     EC_KEY object containing a public EC key
1069  *  \return 1 if the signature is valid, 0 if the signature is invalid
1070  *          and -1 on error
1071  */
1072 int ECDSA_do_verify(const unsigned char *dgst, int dgst_len,
1073                     const ECDSA_SIG *sig, EC_KEY *eckey);
1074
1075 /** Precompute parts of the signing operation
1076  *  \param  eckey  EC_KEY object containing a private EC key
1077  *  \param  ctx    BN_CTX object (optional)
1078  *  \param  kinv   BIGNUM pointer for the inverse of k
1079  *  \param  rp     BIGNUM pointer for x coordinate of k * generator
1080  *  \return 1 on success and 0 otherwise
1081  */
1082 int ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx, BIGNUM **kinv, BIGNUM **rp);
1083
1084 /** Computes ECDSA signature of a given hash value using the supplied
1085  *  private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1086  *  \param  type     this parameter is ignored
1087  *  \param  dgst     pointer to the hash value to sign
1088  *  \param  dgstlen  length of the hash value
1089  *  \param  sig      memory for the DER encoded created signature
1090  *  \param  siglen   pointer to the length of the returned signature
1091  *  \param  eckey    EC_KEY object containing a private EC key
1092  *  \return 1 on success and 0 otherwise
1093  */
1094 int ECDSA_sign(int type, const unsigned char *dgst, int dgstlen,
1095                unsigned char *sig, unsigned int *siglen, EC_KEY *eckey);
1096
1097 /** Computes ECDSA signature of a given hash value using the supplied
1098  *  private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1099  *  \param  type     this parameter is ignored
1100  *  \param  dgst     pointer to the hash value to sign
1101  *  \param  dgstlen  length of the hash value
1102  *  \param  sig      buffer to hold the DER encoded signature
1103  *  \param  siglen   pointer to the length of the returned signature
1104  *  \param  kinv     BIGNUM with a pre-computed inverse k (optional)
1105  *  \param  rp       BIGNUM with a pre-computed rp value (optioanl),
1106  *                   see ECDSA_sign_setup
1107  *  \param  eckey    EC_KEY object containing a private EC key
1108  *  \return 1 on success and 0 otherwise
1109  */
1110 int ECDSA_sign_ex(int type, const unsigned char *dgst, int dgstlen,
1111                   unsigned char *sig, unsigned int *siglen,
1112                   const BIGNUM *kinv, const BIGNUM *rp, EC_KEY *eckey);
1113
1114 /** Verifies that the given signature is valid ECDSA signature
1115  *  of the supplied hash value using the specified public key.
1116  *  \param  type     this parameter is ignored
1117  *  \param  dgst     pointer to the hash value
1118  *  \param  dgstlen  length of the hash value
1119  *  \param  sig      pointer to the DER encoded signature
1120  *  \param  siglen   length of the DER encoded signature
1121  *  \param  eckey    EC_KEY object containing a public EC key
1122  *  \return 1 if the signature is valid, 0 if the signature is invalid
1123  *          and -1 on error
1124  */
1125 int ECDSA_verify(int type, const unsigned char *dgst, int dgstlen,
1126                  const unsigned char *sig, int siglen, EC_KEY *eckey);
1127
1128 /** Returns the maximum length of the DER encoded signature
1129  *  \param  eckey  EC_KEY object
1130  *  \return numbers of bytes required for the DER encoded signature
1131  */
1132 int ECDSA_size(const EC_KEY *eckey);
1133
1134 # define ECParameters_dup(x) ASN1_dup_of(EC_KEY,i2d_ECParameters,d2i_ECParameters,x)
1135
1136 # ifndef __cplusplus
1137 #  if defined(__SUNPRO_C)
1138 #   if __SUNPRO_C >= 0x520
1139 #    pragma error_messages (default,E_ARRAY_OF_INCOMPLETE_NONAME,E_ARRAY_OF_INCOMPLETE)
1140 #   endif
1141 #  endif
1142 # endif
1143
1144 # define EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid) \
1145         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1146                                 EVP_PKEY_OP_PARAMGEN|EVP_PKEY_OP_KEYGEN, \
1147                                 EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID, nid, NULL)
1148
1149 # define EVP_PKEY_CTX_set_ec_param_enc(ctx, flag) \
1150         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1151                                 EVP_PKEY_OP_PARAMGEN|EVP_PKEY_OP_KEYGEN, \
1152                                 EVP_PKEY_CTRL_EC_PARAM_ENC, flag, NULL)
1153
1154 # define EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, flag) \
1155         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1156                                 EVP_PKEY_OP_DERIVE, \
1157                                 EVP_PKEY_CTRL_EC_ECDH_COFACTOR, flag, NULL)
1158
1159 # define EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx) \
1160         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1161                                 EVP_PKEY_OP_DERIVE, \
1162                                 EVP_PKEY_CTRL_EC_ECDH_COFACTOR, -2, NULL)
1163
1164 # define EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, kdf) \
1165         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1166                                 EVP_PKEY_OP_DERIVE, \
1167                                 EVP_PKEY_CTRL_EC_KDF_TYPE, kdf, NULL)
1168
1169 # define EVP_PKEY_CTX_get_ecdh_kdf_type(ctx) \
1170         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1171                                 EVP_PKEY_OP_DERIVE, \
1172                                 EVP_PKEY_CTRL_EC_KDF_TYPE, -2, NULL)
1173
1174 # define EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, md) \
1175         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1176                                 EVP_PKEY_OP_DERIVE, \
1177                                 EVP_PKEY_CTRL_EC_KDF_MD, 0, (void *)md)
1178
1179 # define EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, pmd) \
1180         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1181                                 EVP_PKEY_OP_DERIVE, \
1182                                 EVP_PKEY_CTRL_GET_EC_KDF_MD, 0, (void *)pmd)
1183
1184 # define EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, len) \
1185         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1186                                 EVP_PKEY_OP_DERIVE, \
1187                                 EVP_PKEY_CTRL_EC_KDF_OUTLEN, len, NULL)
1188
1189 # define EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, plen) \
1190         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1191                                 EVP_PKEY_OP_DERIVE, \
1192                         EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN, 0, (void *)plen)
1193
1194 # define EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p, plen) \
1195         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1196                                 EVP_PKEY_OP_DERIVE, \
1197                                 EVP_PKEY_CTRL_EC_KDF_UKM, plen, (void *)p)
1198
1199 # define EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p) \
1200         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1201                                 EVP_PKEY_OP_DERIVE, \
1202                                 EVP_PKEY_CTRL_GET_EC_KDF_UKM, 0, (void *)p)
1203
1204 # define EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID             (EVP_PKEY_ALG_CTRL + 1)
1205 # define EVP_PKEY_CTRL_EC_PARAM_ENC                      (EVP_PKEY_ALG_CTRL + 2)
1206 # define EVP_PKEY_CTRL_EC_ECDH_COFACTOR                  (EVP_PKEY_ALG_CTRL + 3)
1207 # define EVP_PKEY_CTRL_EC_KDF_TYPE                       (EVP_PKEY_ALG_CTRL + 4)
1208 # define EVP_PKEY_CTRL_EC_KDF_MD                         (EVP_PKEY_ALG_CTRL + 5)
1209 # define EVP_PKEY_CTRL_GET_EC_KDF_MD                     (EVP_PKEY_ALG_CTRL + 6)
1210 # define EVP_PKEY_CTRL_EC_KDF_OUTLEN                     (EVP_PKEY_ALG_CTRL + 7)
1211 # define EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN                 (EVP_PKEY_ALG_CTRL + 8)
1212 # define EVP_PKEY_CTRL_EC_KDF_UKM                        (EVP_PKEY_ALG_CTRL + 9)
1213 # define EVP_PKEY_CTRL_GET_EC_KDF_UKM                    (EVP_PKEY_ALG_CTRL + 10)
1214 /* KDF types */
1215 # define EVP_PKEY_ECDH_KDF_NONE                          1
1216 # define EVP_PKEY_ECDH_KDF_X9_62                         2
1217
1218 /* BEGIN ERROR CODES */
1219 /*
1220  * The following lines are auto generated by the script mkerr.pl. Any changes
1221  * made after this point may be overwritten when the script is next run.
1222  */
1223 void ERR_load_EC_strings(void);
1224
1225 /* Error codes for the EC functions. */
1226
1227 /* Function codes. */
1228 # define EC_F_BN_TO_FELEM                                 224
1229 # define EC_F_COMPUTE_WNAF                                143
1230 # define EC_F_D2I_ECPARAMETERS                            144
1231 # define EC_F_D2I_ECPKPARAMETERS                          145
1232 # define EC_F_D2I_ECPRIVATEKEY                            146
1233 # define EC_F_DO_EC_KEY_PRINT                             221
1234 # define EC_F_ECDH_CMS_DECRYPT                            238
1235 # define EC_F_ECDH_CMS_SET_SHARED_INFO                    239
1236 # define EC_F_ECDH_COMPUTE_KEY                            246
1237 # define EC_F_ECDSA_DO_SIGN_EX                            251
1238 # define EC_F_ECDSA_DO_VERIFY                             252
1239 # define EC_F_ECDSA_SIGN_EX                               254
1240 # define EC_F_ECDSA_SIGN_SETUP                            248
1241 # define EC_F_ECDSA_VERIFY                                253
1242 # define EC_F_ECKEY_PARAM2TYPE                            223
1243 # define EC_F_ECKEY_PARAM_DECODE                          212
1244 # define EC_F_ECKEY_PRIV_DECODE                           213
1245 # define EC_F_ECKEY_PRIV_ENCODE                           214
1246 # define EC_F_ECKEY_PUB_DECODE                            215
1247 # define EC_F_ECKEY_PUB_ENCODE                            216
1248 # define EC_F_ECKEY_TYPE2PARAM                            220
1249 # define EC_F_ECPARAMETERS_PRINT                          147
1250 # define EC_F_ECPARAMETERS_PRINT_FP                       148
1251 # define EC_F_ECPKPARAMETERS_PRINT                        149
1252 # define EC_F_ECPKPARAMETERS_PRINT_FP                     150
1253 # define EC_F_ECP_NISTZ256_GET_AFFINE                     240
1254 # define EC_F_ECP_NISTZ256_MULT_PRECOMPUTE                243
1255 # define EC_F_ECP_NISTZ256_POINTS_MUL                     241
1256 # define EC_F_ECP_NISTZ256_PRE_COMP_NEW                   244
1257 # define EC_F_ECP_NISTZ256_WINDOWED_MUL                   242
1258 # define EC_F_ECP_NIST_MOD_192                            203
1259 # define EC_F_ECP_NIST_MOD_224                            204
1260 # define EC_F_ECP_NIST_MOD_256                            205
1261 # define EC_F_ECP_NIST_MOD_521                            206
1262 # define EC_F_EC_ASN1_GROUP2CURVE                         153
1263 # define EC_F_EC_ASN1_GROUP2FIELDID                       154
1264 # define EC_F_EC_ASN1_GROUP2PARAMETERS                    155
1265 # define EC_F_EC_ASN1_GROUP2PKPARAMETERS                  156
1266 # define EC_F_EC_ASN1_PARAMETERS2GROUP                    157
1267 # define EC_F_EC_ASN1_PKPARAMETERS2GROUP                  158
1268 # define EC_F_EC_EX_DATA_SET_DATA                         211
1269 # define EC_F_EC_GF2M_MONTGOMERY_POINT_MULTIPLY           208
1270 # define EC_F_EC_GF2M_SIMPLE_GROUP_CHECK_DISCRIMINANT     159
1271 # define EC_F_EC_GF2M_SIMPLE_GROUP_SET_CURVE              195
1272 # define EC_F_EC_GF2M_SIMPLE_OCT2POINT                    160
1273 # define EC_F_EC_GF2M_SIMPLE_POINT2OCT                    161
1274 # define EC_F_EC_GF2M_SIMPLE_POINT_GET_AFFINE_COORDINATES 162
1275 # define EC_F_EC_GF2M_SIMPLE_POINT_SET_AFFINE_COORDINATES 163
1276 # define EC_F_EC_GF2M_SIMPLE_SET_COMPRESSED_COORDINATES   164
1277 # define EC_F_EC_GFP_MONT_FIELD_DECODE                    133
1278 # define EC_F_EC_GFP_MONT_FIELD_ENCODE                    134
1279 # define EC_F_EC_GFP_MONT_FIELD_MUL                       131
1280 # define EC_F_EC_GFP_MONT_FIELD_SET_TO_ONE                209
1281 # define EC_F_EC_GFP_MONT_FIELD_SQR                       132
1282 # define EC_F_EC_GFP_MONT_GROUP_SET_CURVE                 189
1283 # define EC_F_EC_GFP_MONT_GROUP_SET_CURVE_GFP             135
1284 # define EC_F_EC_GFP_NISTP224_GROUP_SET_CURVE             225
1285 # define EC_F_EC_GFP_NISTP224_POINTS_MUL                  228
1286 # define EC_F_EC_GFP_NISTP224_POINT_GET_AFFINE_COORDINATES 226
1287 # define EC_F_EC_GFP_NISTP256_GROUP_SET_CURVE             230
1288 # define EC_F_EC_GFP_NISTP256_POINTS_MUL                  231
1289 # define EC_F_EC_GFP_NISTP256_POINT_GET_AFFINE_COORDINATES 232
1290 # define EC_F_EC_GFP_NISTP521_GROUP_SET_CURVE             233
1291 # define EC_F_EC_GFP_NISTP521_POINTS_MUL                  234
1292 # define EC_F_EC_GFP_NISTP521_POINT_GET_AFFINE_COORDINATES 235
1293 # define EC_F_EC_GFP_NIST_FIELD_MUL                       200
1294 # define EC_F_EC_GFP_NIST_FIELD_SQR                       201
1295 # define EC_F_EC_GFP_NIST_GROUP_SET_CURVE                 202
1296 # define EC_F_EC_GFP_SIMPLE_GROUP_CHECK_DISCRIMINANT      165
1297 # define EC_F_EC_GFP_SIMPLE_GROUP_SET_CURVE               166
1298 # define EC_F_EC_GFP_SIMPLE_GROUP_SET_CURVE_GFP           100
1299 # define EC_F_EC_GFP_SIMPLE_GROUP_SET_GENERATOR           101
1300 # define EC_F_EC_GFP_SIMPLE_MAKE_AFFINE                   102
1301 # define EC_F_EC_GFP_SIMPLE_OCT2POINT                     103
1302 # define EC_F_EC_GFP_SIMPLE_POINT2OCT                     104
1303 # define EC_F_EC_GFP_SIMPLE_POINTS_MAKE_AFFINE            137
1304 # define EC_F_EC_GFP_SIMPLE_POINT_GET_AFFINE_COORDINATES  167
1305 # define EC_F_EC_GFP_SIMPLE_POINT_GET_AFFINE_COORDINATES_GFP 105
1306 # define EC_F_EC_GFP_SIMPLE_POINT_SET_AFFINE_COORDINATES  168
1307 # define EC_F_EC_GFP_SIMPLE_POINT_SET_AFFINE_COORDINATES_GFP 128
1308 # define EC_F_EC_GFP_SIMPLE_SET_COMPRESSED_COORDINATES    169
1309 # define EC_F_EC_GFP_SIMPLE_SET_COMPRESSED_COORDINATES_GFP 129
1310 # define EC_F_EC_GROUP_CHECK                              170
1311 # define EC_F_EC_GROUP_CHECK_DISCRIMINANT                 171
1312 # define EC_F_EC_GROUP_COPY                               106
1313 # define EC_F_EC_GROUP_GET0_GENERATOR                     139
1314 # define EC_F_EC_GROUP_GET_COFACTOR                       140
1315 # define EC_F_EC_GROUP_GET_CURVE_GF2M                     172
1316 # define EC_F_EC_GROUP_GET_CURVE_GFP                      130
1317 # define EC_F_EC_GROUP_GET_DEGREE                         173
1318 # define EC_F_EC_GROUP_GET_ORDER                          141
1319 # define EC_F_EC_GROUP_GET_PENTANOMIAL_BASIS              193
1320 # define EC_F_EC_GROUP_GET_TRINOMIAL_BASIS                194
1321 # define EC_F_EC_GROUP_NEW                                108
1322 # define EC_F_EC_GROUP_NEW_BY_CURVE_NAME                  174
1323 # define EC_F_EC_GROUP_NEW_FROM_DATA                      175
1324 # define EC_F_EC_GROUP_PRECOMPUTE_MULT                    142
1325 # define EC_F_EC_GROUP_SET_CURVE_GF2M                     176
1326 # define EC_F_EC_GROUP_SET_CURVE_GFP                      109
1327 # define EC_F_EC_GROUP_SET_EXTRA_DATA                     110
1328 # define EC_F_EC_GROUP_SET_GENERATOR                      111
1329 # define EC_F_EC_KEY_CHECK_KEY                            177
1330 # define EC_F_EC_KEY_COPY                                 178
1331 # define EC_F_EC_KEY_GENERATE_KEY                         179
1332 # define EC_F_EC_KEY_NEW                                  182
1333 # define EC_F_EC_KEY_NEW_METHOD                           245
1334 # define EC_F_EC_KEY_PRINT                                180
1335 # define EC_F_EC_KEY_PRINT_FP                             181
1336 # define EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES    229
1337 # define EC_F_EC_POINTS_MAKE_AFFINE                       136
1338 # define EC_F_EC_POINT_ADD                                112
1339 # define EC_F_EC_POINT_CMP                                113
1340 # define EC_F_EC_POINT_COPY                               114
1341 # define EC_F_EC_POINT_DBL                                115
1342 # define EC_F_EC_POINT_GET_AFFINE_COORDINATES_GF2M        183
1343 # define EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP         116
1344 # define EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP    117
1345 # define EC_F_EC_POINT_INVERT                             210
1346 # define EC_F_EC_POINT_IS_AT_INFINITY                     118
1347 # define EC_F_EC_POINT_IS_ON_CURVE                        119
1348 # define EC_F_EC_POINT_MAKE_AFFINE                        120
1349 # define EC_F_EC_POINT_MUL                                184
1350 # define EC_F_EC_POINT_NEW                                121
1351 # define EC_F_EC_POINT_OCT2POINT                          122
1352 # define EC_F_EC_POINT_POINT2OCT                          123
1353 # define EC_F_EC_POINT_SET_AFFINE_COORDINATES_GF2M        185
1354 # define EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP         124
1355 # define EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GF2M    186
1356 # define EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP     125
1357 # define EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP    126
1358 # define EC_F_EC_POINT_SET_TO_INFINITY                    127
1359 # define EC_F_EC_PRE_COMP_DUP                             207
1360 # define EC_F_EC_PRE_COMP_NEW                             196
1361 # define EC_F_EC_WNAF_MUL                                 187
1362 # define EC_F_EC_WNAF_PRECOMPUTE_MULT                     188
1363 # define EC_F_I2D_ECPARAMETERS                            190
1364 # define EC_F_I2D_ECPKPARAMETERS                          191
1365 # define EC_F_I2D_ECPRIVATEKEY                            192
1366 # define EC_F_I2O_ECPUBLICKEY                             151
1367 # define EC_F_NISTP224_PRE_COMP_NEW                       227
1368 # define EC_F_NISTP256_PRE_COMP_NEW                       236
1369 # define EC_F_NISTP521_PRE_COMP_NEW                       237
1370 # define EC_F_O2I_ECPUBLICKEY                             152
1371 # define EC_F_OLD_EC_PRIV_DECODE                          222
1372 # define EC_F_OSSL_ECDH_COMPUTE_KEY                       247
1373 # define EC_F_OSSL_ECDSA_SIGN_SIG                         249
1374 # define EC_F_OSSL_ECDSA_VERIFY_SIG                       250
1375 # define EC_F_PKEY_EC_CTRL                                197
1376 # define EC_F_PKEY_EC_CTRL_STR                            198
1377 # define EC_F_PKEY_EC_DERIVE                              217
1378 # define EC_F_PKEY_EC_KEYGEN                              199
1379 # define EC_F_PKEY_EC_PARAMGEN                            219
1380 # define EC_F_PKEY_EC_SIGN                                218
1381
1382 /* Reason codes. */
1383 # define EC_R_ASN1_ERROR                                  115
1384 # define EC_R_ASN1_UNKNOWN_FIELD                          116
1385 # define EC_R_BAD_SIGNATURE                               156
1386 # define EC_R_BIGNUM_OUT_OF_RANGE                         144
1387 # define EC_R_BUFFER_TOO_SMALL                            100
1388 # define EC_R_COORDINATES_OUT_OF_RANGE                    146
1389 # define EC_R_D2I_ECPKPARAMETERS_FAILURE                  117
1390 # define EC_R_DECODE_ERROR                                142
1391 # define EC_R_DISCRIMINANT_IS_ZERO                        118
1392 # define EC_R_EC_GROUP_NEW_BY_NAME_FAILURE                119
1393 # define EC_R_FIELD_TOO_LARGE                             143
1394 # define EC_R_GF2M_NOT_SUPPORTED                          147
1395 # define EC_R_GROUP2PKPARAMETERS_FAILURE                  120
1396 # define EC_R_I2D_ECPKPARAMETERS_FAILURE                  121
1397 # define EC_R_INCOMPATIBLE_OBJECTS                        101
1398 # define EC_R_INVALID_ARGUMENT                            112
1399 # define EC_R_INVALID_COMPRESSED_POINT                    110
1400 # define EC_R_INVALID_COMPRESSION_BIT                     109
1401 # define EC_R_INVALID_CURVE                               141
1402 # define EC_R_INVALID_DIGEST                              151
1403 # define EC_R_INVALID_DIGEST_TYPE                         138
1404 # define EC_R_INVALID_ENCODING                            102
1405 # define EC_R_INVALID_FIELD                               103
1406 # define EC_R_INVALID_FORM                                104
1407 # define EC_R_INVALID_GROUP_ORDER                         122
1408 # define EC_R_INVALID_PENTANOMIAL_BASIS                   132
1409 # define EC_R_INVALID_PRIVATE_KEY                         123
1410 # define EC_R_INVALID_TRINOMIAL_BASIS                     137
1411 # define EC_R_KDF_FAILED                                  153
1412 # define EC_R_KDF_PARAMETER_ERROR                         148
1413 # define EC_R_KEYS_NOT_SET                                140
1414 # define EC_R_MISSING_PARAMETERS                          124
1415 # define EC_R_MISSING_PRIVATE_KEY                         125
1416 # define EC_R_NEED_NEW_SETUP_VALUES                       157
1417 # define EC_R_NOT_A_NIST_PRIME                            135
1418 # define EC_R_NOT_A_SUPPORTED_NIST_PRIME                  136
1419 # define EC_R_NOT_IMPLEMENTED                             126
1420 # define EC_R_NOT_INITIALIZED                             111
1421 # define EC_R_NO_FIELD_MOD                                133
1422 # define EC_R_NO_PARAMETERS_SET                           139
1423 # define EC_R_NO_PRIVATE_VALUE                            154
1424 # define EC_R_OPERATION_NOT_SUPPORTED                     152
1425 # define EC_R_PASSED_NULL_PARAMETER                       134
1426 # define EC_R_PEER_KEY_ERROR                              149
1427 # define EC_R_PKPARAMETERS2GROUP_FAILURE                  127
1428 # define EC_R_POINT_ARITHMETIC_FAILURE                    155
1429 # define EC_R_POINT_AT_INFINITY                           106
1430 # define EC_R_POINT_IS_NOT_ON_CURVE                       107
1431 # define EC_R_RANDOM_NUMBER_GENERATION_FAILED             158
1432 # define EC_R_SHARED_INFO_ERROR                           150
1433 # define EC_R_SLOT_FULL                                   108
1434 # define EC_R_UNDEFINED_GENERATOR                         113
1435 # define EC_R_UNDEFINED_ORDER                             128
1436 # define EC_R_UNKNOWN_GROUP                               129
1437 # define EC_R_UNKNOWN_ORDER                               114
1438 # define EC_R_UNSUPPORTED_FIELD                           131
1439 # define EC_R_WRONG_CURVE_PARAMETERS                      145
1440 # define EC_R_WRONG_ORDER                                 130
1441
1442 #ifdef  __cplusplus
1443 }
1444 #endif
1445 #endif