include/openssl/ec.h

   1 /*
   2  * Originally written by Bodo Moeller for the OpenSSL project.
   3  */
   4 /* ====================================================================
   5  * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  *
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in
  16  *    the documentation and/or other materials provided with the
  17  *    distribution.
  18  *
  19  * 3. All advertising materials mentioning features or use of this
  20  *    software must display the following acknowledgment:
  21  *    "This product includes software developed by the OpenSSL Project
  22  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  23  *
  24  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  25  *    endorse or promote products derived from this software without
  26  *    prior written permission. For written permission, please contact
  27  *    openssl-core@openssl.org.
  28  *
  29  * 5. Products derived from this software may not be called "OpenSSL"
  30  *    nor may "OpenSSL" appear in their names without prior written
  31  *    permission of the OpenSSL Project.
  32  *
  33  * 6. Redistributions of any form whatsoever must retain the following
  34  *    acknowledgment:
  35  *    "This product includes software developed by the OpenSSL Project
  36  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  37  *
  38  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  39  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  40  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  41  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  42  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  43  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  44  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  45  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  46  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  47  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  48  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  49  * OF THE POSSIBILITY OF SUCH DAMAGE.
  50  * ====================================================================
  51  *
  52  * This product includes cryptographic software written by Eric Young
  53  * (eay@cryptsoft.com).  This product includes software written by Tim
  54  * Hudson (tjh@cryptsoft.com).
  55  *
  56  */
  57 /* ====================================================================
  58  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
  59  *
  60  * Portions of the attached software ("Contribution") are developed by
  61  * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
  62  *
  63  * The Contribution is licensed pursuant to the OpenSSL open source
  64  * license provided above.
  65  *
  66  * The elliptic curve binary polynomial software is originally written by
  67  * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories.
  68  *
  69  */
  70
  71 #ifndef HEADER_EC_H
  72 # define HEADER_EC_H
  73
  74 # include <openssl/opensslconf.h>
  75
  76 # ifndef OPENSSL_NO_EC
  77 # include <openssl/asn1.h>
  78 # include <openssl/symhacks.h>
  79 # if OPENSSL_API_COMPAT < 0x10100000L
  80 #  include <openssl/bn.h>
  81 # endif
  82 # ifdef  __cplusplus
  83 extern "C" {
  84 # endif
  85
  86 # ifndef OPENSSL_ECC_MAX_FIELD_BITS
  87 #  define OPENSSL_ECC_MAX_FIELD_BITS 661
  88 # endif
  89
  90 /** Enum for the point conversion form as defined in X9.62 (ECDSA)
  91  *  for the encoding of a elliptic curve point (x,y) */
  92 typedef enum {
  93         /** the point is encoded as z||x, where the octet z specifies
  94          *  which solution of the quadratic equation y is  */
  95     POINT_CONVERSION_COMPRESSED = 2,
  96         /** the point is encoded as z||x||y, where z is the octet 0x04  */
  97     POINT_CONVERSION_UNCOMPRESSED = 4,
  98         /** the point is encoded as z||x||y, where the octet z specifies
  99          *  which solution of the quadratic equation y is  */
 100     POINT_CONVERSION_HYBRID = 6
 101 } point_conversion_form_t;
 102
 103 typedef struct ec_method_st EC_METHOD;
 104 typedef struct ec_group_st EC_GROUP;
 105 typedef struct ec_point_st EC_POINT;
 106 typedef struct ecpk_parameters_st ECPKPARAMETERS;
 107 typedef struct ec_parameters_st ECPARAMETERS;
 108
 109 /********************************************************************/
 110 /*               EC_METHODs for curves over GF(p)                   */
 111 /********************************************************************/
 112
 113 /** Returns the basic GFp ec methods which provides the basis for the
 114  *  optimized methods.
 115  *  \return  EC_METHOD object
 116  */
 117 const EC_METHOD *EC_GFp_simple_method(void);
 118
 119 /** Returns GFp methods using montgomery multiplication.
 120  *  \return  EC_METHOD object
 121  */
 122 const EC_METHOD *EC_GFp_mont_method(void);
 123
 124 /** Returns GFp methods using optimized methods for NIST recommended curves
 125  *  \return  EC_METHOD object
 126  */
 127 const EC_METHOD *EC_GFp_nist_method(void);
 128
 129 # ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
 130 #  ifndef OPENSSL_SYS_WIN32
 131 /** Returns 64-bit optimized methods for nistp224
 132  *  \return  EC_METHOD object
 133  */
 134 const EC_METHOD *EC_GFp_nistp224_method(void);
 135
 136 /** Returns 64-bit optimized methods for nistp256
 137  *  \return  EC_METHOD object
 138  */
 139 const EC_METHOD *EC_GFp_nistp256_method(void);
 140
 141 /** Returns 64-bit optimized methods for nistp521
 142  *  \return  EC_METHOD object
 143  */
 144 const EC_METHOD *EC_GFp_nistp521_method(void);
 145 #  endif
 146 # endif
 147
 148 # ifndef OPENSSL_NO_EC2M
 149 /********************************************************************/
 150 /*           EC_METHOD for curves over GF(2^m)                      */
 151 /********************************************************************/
 152
 153 /** Returns the basic GF2m ec method
 154  *  \return  EC_METHOD object
 155  */
 156 const EC_METHOD *EC_GF2m_simple_method(void);
 157
 158 # endif
 159
 160 /********************************************************************/
 161 /*                   EC_GROUP functions                             */
 162 /********************************************************************/
 163
 164 /** Creates a new EC_GROUP object
 165  *  \param   meth  EC_METHOD to use
 166  *  \return  newly created EC_GROUP object or NULL in case of an error.
 167  */
 168 EC_GROUP *EC_GROUP_new(const EC_METHOD *meth);
 169
 170 /** Frees a EC_GROUP object
 171  *  \param  group  EC_GROUP object to be freed.
 172  */
 173 void EC_GROUP_free(EC_GROUP *group);
 174
 175 /** Clears and frees a EC_GROUP object
 176  *  \param  group  EC_GROUP object to be cleared and freed.
 177  */
 178 void EC_GROUP_clear_free(EC_GROUP *group);
 179
 180 /** Copies EC_GROUP objects. Note: both EC_GROUPs must use the same EC_METHOD.
 181  *  \param  dst  destination EC_GROUP object
 182  *  \param  src  source EC_GROUP object
 183  *  \return 1 on success and 0 if an error occurred.
 184  */
 185 int EC_GROUP_copy(EC_GROUP *dst, const EC_GROUP *src);
 186
 187 /** Creates a new EC_GROUP object and copies the copies the content
 188  *  form src to the newly created EC_KEY object
 189  *  \param  src  source EC_GROUP object
 190  *  \return newly created EC_GROUP object or NULL in case of an error.
 191  */
 192 EC_GROUP *EC_GROUP_dup(const EC_GROUP *src);
 193
 194 /** Returns the EC_METHOD of the EC_GROUP object.
 195  *  \param  group  EC_GROUP object
 196  *  \return EC_METHOD used in this EC_GROUP object.
 197  */
 198 const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group);
 199
 200 /** Returns the field type of the EC_METHOD.
 201  *  \param  meth  EC_METHOD object
 202  *  \return NID of the underlying field type OID.
 203  */
 204 int EC_METHOD_get_field_type(const EC_METHOD *meth);
 205
 206 /** Sets the generator and it's order/cofactor of a EC_GROUP object.
 207  *  \param  group      EC_GROUP object
 208  *  \param  generator  EC_POINT object with the generator.
 209  *  \param  order      the order of the group generated by the generator.
 210  *  \param  cofactor   the index of the sub-group generated by the generator
 211  *                     in the group of all points on the elliptic curve.
 212  *  \return 1 on success and 0 if an error occurred
 213  */
 214 int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator,
 215                            const BIGNUM *order, const BIGNUM *cofactor);
 216
 217 /** Returns the generator of a EC_GROUP object.
 218  *  \param  group  EC_GROUP object
 219  *  \return the currently used generator (possibly NULL).
 220  */
 221 const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group);
 222
 223 /** Returns the montgomery data for order(Generator)
 224  *  \param  group  EC_GROUP object
 225  *  \return the currently used generator (possibly NULL).
 226 */
 227 BN_MONT_CTX *EC_GROUP_get_mont_data(const EC_GROUP *group);
 228
 229 /** Gets the order of a EC_GROUP
 230  *  \param  group  EC_GROUP object
 231  *  \param  order  BIGNUM to which the order is copied
 232  *  \param  ctx    unused
 233  *  \return 1 on success and 0 if an error occurred
 234  */
 235 int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx);
 236
 237 /** Gets the order of an EC_GROUP
 238  *  \param  group  EC_GROUP object
 239  *  \return the group order
 240  */
 241
 242 const BIGNUM *EC_GROUP_get0_order(const EC_GROUP *group);
 243
 244 /** Gets the number of bits of the order of an EC_GROUP
 245  *  \param  group  EC_GROUP object
 246  *  \return number of bits of group order.
 247  */
 248
 249 int EC_GROUP_order_bits(const EC_GROUP *group);
 250
 251 /** Gets the cofactor of a EC_GROUP
 252  *  \param  group     EC_GROUP object
 253  *  \param  cofactor  BIGNUM to which the cofactor is copied
 254  *  \param  ctx       unused
 255  *  \return 1 on success and 0 if an error occurred
 256  */
 257 int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor,
 258                           BN_CTX *ctx);
 259
 260 /** Gets the cofactor of an EC_GROUP
 261  *  \param  group  EC_GROUP object
 262  *  \return the group cofactor
 263  */
 264
 265 const BIGNUM *EC_GROUP_get0_cofactor(const EC_GROUP *group);
 266
 267 /** Sets the name of a EC_GROUP object
 268  *  \param  group  EC_GROUP object
 269  *  \param  nid    NID of the curve name OID
 270  */
 271 void EC_GROUP_set_curve_name(EC_GROUP *group, int nid);
 272
 273 /** Returns the curve name of a EC_GROUP object
 274  *  \param  group  EC_GROUP object
 275  *  \return NID of the curve name OID or 0 if not set.
 276  */
 277 int EC_GROUP_get_curve_name(const EC_GROUP *group);
 278
 279 void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag);
 280 int EC_GROUP_get_asn1_flag(const EC_GROUP *group);
 281
 282 void EC_GROUP_set_point_conversion_form(EC_GROUP *group,
 283                                         point_conversion_form_t form);
 284 point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *);
 285
 286 unsigned char *EC_GROUP_get0_seed(const EC_GROUP *x);
 287 size_t EC_GROUP_get_seed_len(const EC_GROUP *);
 288 size_t EC_GROUP_set_seed(EC_GROUP *, const unsigned char *, size_t len);
 289
 290 /** Sets the parameter of a ec over GFp defined by y^2 = x^3 + a*x + b
 291  *  \param  group  EC_GROUP object
 292  *  \param  p      BIGNUM with the prime number
 293  *  \param  a      BIGNUM with parameter a of the equation
 294  *  \param  b      BIGNUM with parameter b of the equation
 295  *  \param  ctx    BN_CTX object (optional)
 296  *  \return 1 on success and 0 if an error occurred
 297  */
 298 int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a,
 299                            const BIGNUM *b, BN_CTX *ctx);
 300
 301 /** Gets the parameter of the ec over GFp defined by y^2 = x^3 + a*x + b
 302  *  \param  group  EC_GROUP object
 303  *  \param  p      BIGNUM for the prime number
 304  *  \param  a      BIGNUM for parameter a of the equation
 305  *  \param  b      BIGNUM for parameter b of the equation
 306  *  \param  ctx    BN_CTX object (optional)
 307  *  \return 1 on success and 0 if an error occurred
 308  */
 309 int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, BIGNUM *a,
 310                            BIGNUM *b, BN_CTX *ctx);
 311
 312 # ifndef OPENSSL_NO_EC2M
 313 /** Sets the parameter of a ec over GF2m defined by y^2 + x*y = x^3 + a*x^2 + b
 314  *  \param  group  EC_GROUP object
 315  *  \param  p      BIGNUM with the polynomial defining the underlying field
 316  *  \param  a      BIGNUM with parameter a of the equation
 317  *  \param  b      BIGNUM with parameter b of the equation
 318  *  \param  ctx    BN_CTX object (optional)
 319  *  \return 1 on success and 0 if an error occurred
 320  */
 321 int EC_GROUP_set_curve_GF2m(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a,
 322                             const BIGNUM *b, BN_CTX *ctx);
 323
 324 /** Gets the parameter of the ec over GF2m defined by y^2 + x*y = x^3 + a*x^2 + b
 325  *  \param  group  EC_GROUP object
 326  *  \param  p      BIGNUM for the polynomial defining the underlying field
 327  *  \param  a      BIGNUM for parameter a of the equation
 328  *  \param  b      BIGNUM for parameter b of the equation
 329  *  \param  ctx    BN_CTX object (optional)
 330  *  \return 1 on success and 0 if an error occurred
 331  */
 332 int EC_GROUP_get_curve_GF2m(const EC_GROUP *group, BIGNUM *p, BIGNUM *a,
 333                             BIGNUM *b, BN_CTX *ctx);
 334 # endif
 335 /** Returns the number of bits needed to represent a field element
 336  *  \param  group  EC_GROUP object
 337  *  \return number of bits needed to represent a field element
 338  */
 339 int EC_GROUP_get_degree(const EC_GROUP *group);
 340
 341 /** Checks whether the parameter in the EC_GROUP define a valid ec group
 342  *  \param  group  EC_GROUP object
 343  *  \param  ctx    BN_CTX object (optional)
 344  *  \return 1 if group is a valid ec group and 0 otherwise
 345  */
 346 int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx);
 347
 348 /** Checks whether the discriminant of the elliptic curve is zero or not
 349  *  \param  group  EC_GROUP object
 350  *  \param  ctx    BN_CTX object (optional)
 351  *  \return 1 if the discriminant is not zero and 0 otherwise
 352  */
 353 int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx);
 354
 355 /** Compares two EC_GROUP objects
 356  *  \param  a    first EC_GROUP object
 357  *  \param  b    second EC_GROUP object
 358  *  \param  ctx  BN_CTX object (optional)
 359  *  \return 0 if both groups are equal and 1 otherwise
 360  */
 361 int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ctx);
 362
 363 /*
 364  * EC_GROUP_new_GF*() calls EC_GROUP_new() and EC_GROUP_set_GF*() after
 365  * choosing an appropriate EC_METHOD
 366  */
 367
 368 /** Creates a new EC_GROUP object with the specified parameters defined
 369  *  over GFp (defined by the equation y^2 = x^3 + a*x + b)
 370  *  \param  p    BIGNUM with the prime number
 371  *  \param  a    BIGNUM with the parameter a of the equation
 372  *  \param  b    BIGNUM with the parameter b of the equation
 373  *  \param  ctx  BN_CTX object (optional)
 374  *  \return newly created EC_GROUP object with the specified parameters
 375  */
 376 EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a,
 377                                  const BIGNUM *b, BN_CTX *ctx);
 378 # ifndef OPENSSL_NO_EC2M
 379 /** Creates a new EC_GROUP object with the specified parameters defined
 380  *  over GF2m (defined by the equation y^2 + x*y = x^3 + a*x^2 + b)
 381  *  \param  p    BIGNUM with the polynomial defining the underlying field
 382  *  \param  a    BIGNUM with the parameter a of the equation
 383  *  \param  b    BIGNUM with the parameter b of the equation
 384  *  \param  ctx  BN_CTX object (optional)
 385  *  \return newly created EC_GROUP object with the specified parameters
 386  */
 387 EC_GROUP *EC_GROUP_new_curve_GF2m(const BIGNUM *p, const BIGNUM *a,
 388                                   const BIGNUM *b, BN_CTX *ctx);
 389 # endif
 390
 391 /** Creates a EC_GROUP object with a curve specified by a NID
 392  *  \param  nid  NID of the OID of the curve name
 393  *  \return newly created EC_GROUP object with specified curve or NULL
 394  *          if an error occurred
 395  */
 396 EC_GROUP *EC_GROUP_new_by_curve_name(int nid);
 397
 398 /** Creates a new EC_GROUP object from an ECPARAMETERS object
 399  *  \param  params  pointer to the ECPARAMETERS object
 400  *  \return newly created EC_GROUP object with specified curve or NULL
 401  *          if an error occurred
 402  */
 403 EC_GROUP *EC_GROUP_new_from_ecparameters(const ECPARAMETERS *params);
 404
 405 /** Creates an ECPARAMETERS object for the the given EC_GROUP object.
 406  *  \param  group   pointer to the EC_GROUP object
 407  *  \param  params  pointer to an existing ECPARAMETERS object or NULL
 408  *  \return pointer to the new ECPARAMETERS object or NULL
 409  *          if an error occurred.
 410  */
 411 ECPARAMETERS *EC_GROUP_get_ecparameters(const EC_GROUP *group,
 412                                         ECPARAMETERS *params);
 413
 414 /** Creates a new EC_GROUP object from an ECPKPARAMETERS object
 415  *  \param  params  pointer to an existing ECPKPARAMETERS object, or NULL
 416  *  \return newly created EC_GROUP object with specified curve, or NULL
 417  *          if an error occurred
 418  */
 419 EC_GROUP *EC_GROUP_new_from_ecpkparameters(const ECPKPARAMETERS *params);
 420
 421 /** Creates an ECPKPARAMETERS object for the the given EC_GROUP object.
 422  *  \param  group   pointer to the EC_GROUP object
 423  *  \param  params  pointer to an existing ECPKPARAMETERS object or NULL
 424  *  \return pointer to the new ECPKPARAMETERS object or NULL
 425  *          if an error occurred.
 426  */
 427 ECPKPARAMETERS *EC_GROUP_get_ecpkparameters(const EC_GROUP *group,
 428                                             ECPKPARAMETERS *params);
 429
 430 /********************************************************************/
 431 /*               handling of internal curves                        */
 432 /********************************************************************/
 433
 434 typedef struct {
 435     int nid;
 436     const char *comment;
 437 } EC_builtin_curve;
 438
 439 /*
 440  * EC_builtin_curves(EC_builtin_curve *r, size_t size) returns number of all
 441  * available curves or zero if a error occurred. In case r is not zero,
 442  * nitems EC_builtin_curve structures are filled with the data of the first
 443  * nitems internal groups
 444  */
 445 size_t EC_get_builtin_curves(EC_builtin_curve *r, size_t nitems);
 446
 447 const char *EC_curve_nid2nist(int nid);
 448 int EC_curve_nist2nid(const char *name);
 449
 450 /********************************************************************/
 451 /*                    EC_POINT functions                            */
 452 /********************************************************************/
 453
 454 /** Creates a new EC_POINT object for the specified EC_GROUP
 455  *  \param  group  EC_GROUP the underlying EC_GROUP object
 456  *  \return newly created EC_POINT object or NULL if an error occurred
 457  */
 458 EC_POINT *EC_POINT_new(const EC_GROUP *group);
 459
 460 /** Frees a EC_POINT object
 461  *  \param  point  EC_POINT object to be freed
 462  */
 463 void EC_POINT_free(EC_POINT *point);
 464
 465 /** Clears and frees a EC_POINT object
 466  *  \param  point  EC_POINT object to be cleared and freed
 467  */
 468 void EC_POINT_clear_free(EC_POINT *point);
 469
 470 /** Copies EC_POINT object
 471  *  \param  dst  destination EC_POINT object
 472  *  \param  src  source EC_POINT object
 473  *  \return 1 on success and 0 if an error occurred
 474  */
 475 int EC_POINT_copy(EC_POINT *dst, const EC_POINT *src);
 476
 477 /** Creates a new EC_POINT object and copies the content of the supplied
 478  *  EC_POINT
 479  *  \param  src    source EC_POINT object
 480  *  \param  group  underlying the EC_GROUP object
 481  *  \return newly created EC_POINT object or NULL if an error occurred
 482  */
 483 EC_POINT *EC_POINT_dup(const EC_POINT *src, const EC_GROUP *group);
 484
 485 /** Returns the EC_METHOD used in EC_POINT object
 486  *  \param  point  EC_POINT object
 487  *  \return the EC_METHOD used
 488  */
 489 const EC_METHOD *EC_POINT_method_of(const EC_POINT *point);
 490
 491 /** Sets a point to infinity (neutral element)
 492  *  \param  group  underlying EC_GROUP object
 493  *  \param  point  EC_POINT to set to infinity
 494  *  \return 1 on success and 0 if an error occurred
 495  */
 496 int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point);
 497
 498 /** Sets the jacobian projective coordinates of a EC_POINT over GFp
 499  *  \param  group  underlying EC_GROUP object
 500  *  \param  p      EC_POINT object
 501  *  \param  x      BIGNUM with the x-coordinate
 502  *  \param  y      BIGNUM with the y-coordinate
 503  *  \param  z      BIGNUM with the z-coordinate
 504  *  \param  ctx    BN_CTX object (optional)
 505  *  \return 1 on success and 0 if an error occurred
 506  */
 507 int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group,
 508                                              EC_POINT *p, const BIGNUM *x,
 509                                              const BIGNUM *y, const BIGNUM *z,
 510                                              BN_CTX *ctx);
 511
 512 /** Gets the jacobian projective coordinates of a EC_POINT over GFp
 513  *  \param  group  underlying EC_GROUP object
 514  *  \param  p      EC_POINT object
 515  *  \param  x      BIGNUM for the x-coordinate
 516  *  \param  y      BIGNUM for the y-coordinate
 517  *  \param  z      BIGNUM for the z-coordinate
 518  *  \param  ctx    BN_CTX object (optional)
 519  *  \return 1 on success and 0 if an error occurred
 520  */
 521 int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group,
 522                                              const EC_POINT *p, BIGNUM *x,
 523                                              BIGNUM *y, BIGNUM *z,
 524                                              BN_CTX *ctx);
 525
 526 /** Sets the affine coordinates of a EC_POINT over GFp
 527  *  \param  group  underlying EC_GROUP object
 528  *  \param  p      EC_POINT object
 529  *  \param  x      BIGNUM with the x-coordinate
 530  *  \param  y      BIGNUM with the y-coordinate
 531  *  \param  ctx    BN_CTX object (optional)
 532  *  \return 1 on success and 0 if an error occurred
 533  */
 534 int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, EC_POINT *p,
 535                                         const BIGNUM *x, const BIGNUM *y,
 536                                         BN_CTX *ctx);
 537
 538 /** Gets the affine coordinates of a EC_POINT over GFp
 539  *  \param  group  underlying EC_GROUP object
 540  *  \param  p      EC_POINT object
 541  *  \param  x      BIGNUM for the x-coordinate
 542  *  \param  y      BIGNUM for the y-coordinate
 543  *  \param  ctx    BN_CTX object (optional)
 544  *  \return 1 on success and 0 if an error occurred
 545  */
 546 int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group,
 547                                         const EC_POINT *p, BIGNUM *x,
 548                                         BIGNUM *y, BN_CTX *ctx);
 549
 550 /** Sets the x9.62 compressed coordinates of a EC_POINT over GFp
 551  *  \param  group  underlying EC_GROUP object
 552  *  \param  p      EC_POINT object
 553  *  \param  x      BIGNUM with x-coordinate
 554  *  \param  y_bit  integer with the y-Bit (either 0 or 1)
 555  *  \param  ctx    BN_CTX object (optional)
 556  *  \return 1 on success and 0 if an error occurred
 557  */
 558 int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group,
 559                                             EC_POINT *p, const BIGNUM *x,
 560                                             int y_bit, BN_CTX *ctx);
 561 # ifndef OPENSSL_NO_EC2M
 562 /** Sets the affine coordinates of a EC_POINT over GF2m
 563  *  \param  group  underlying EC_GROUP object
 564  *  \param  p      EC_POINT object
 565  *  \param  x      BIGNUM with the x-coordinate
 566  *  \param  y      BIGNUM with the y-coordinate
 567  *  \param  ctx    BN_CTX object (optional)
 568  *  \return 1 on success and 0 if an error occurred
 569  */
 570 int EC_POINT_set_affine_coordinates_GF2m(const EC_GROUP *group, EC_POINT *p,
 571                                          const BIGNUM *x, const BIGNUM *y,
 572                                          BN_CTX *ctx);
 573
 574 /** Gets the affine coordinates of a EC_POINT over GF2m
 575  *  \param  group  underlying EC_GROUP object
 576  *  \param  p      EC_POINT object
 577  *  \param  x      BIGNUM for the x-coordinate
 578  *  \param  y      BIGNUM for the y-coordinate
 579  *  \param  ctx    BN_CTX object (optional)
 580  *  \return 1 on success and 0 if an error occurred
 581  */
 582 int EC_POINT_get_affine_coordinates_GF2m(const EC_GROUP *group,
 583                                          const EC_POINT *p, BIGNUM *x,
 584                                          BIGNUM *y, BN_CTX *ctx);
 585
 586 /** Sets the x9.62 compressed coordinates of a EC_POINT over GF2m
 587  *  \param  group  underlying EC_GROUP object
 588  *  \param  p      EC_POINT object
 589  *  \param  x      BIGNUM with x-coordinate
 590  *  \param  y_bit  integer with the y-Bit (either 0 or 1)
 591  *  \param  ctx    BN_CTX object (optional)
 592  *  \return 1 on success and 0 if an error occurred
 593  */
 594 int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP *group,
 595                                              EC_POINT *p, const BIGNUM *x,
 596                                              int y_bit, BN_CTX *ctx);
 597 # endif
 598 /** Encodes a EC_POINT object to a octet string
 599  *  \param  group  underlying EC_GROUP object
 600  *  \param  p      EC_POINT object
 601  *  \param  form   point conversion form
 602  *  \param  buf    memory buffer for the result. If NULL the function returns
 603  *                 required buffer size.
 604  *  \param  len    length of the memory buffer
 605  *  \param  ctx    BN_CTX object (optional)
 606  *  \return the length of the encoded octet string or 0 if an error occurred
 607  */
 608 size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *p,
 609                           point_conversion_form_t form,
 610                           unsigned char *buf, size_t len, BN_CTX *ctx);
 611
 612 /** Decodes a EC_POINT from a octet string
 613  *  \param  group  underlying EC_GROUP object
 614  *  \param  p      EC_POINT object
 615  *  \param  buf    memory buffer with the encoded ec point
 616  *  \param  len    length of the encoded ec point
 617  *  \param  ctx    BN_CTX object (optional)
 618  *  \return 1 on success and 0 if an error occurred
 619  */
 620 int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *p,
 621                        const unsigned char *buf, size_t len, BN_CTX *ctx);
 622
 623 /** Encodes an EC_POINT object to an allocated octet string
 624  *  \param  group  underlying EC_GROUP object
 625  *  \param  point  EC_POINT object
 626  *  \param  form   point conversion form
 627  *  \param  pbuf   returns pointer to allocated buffer
 628  *  \param  len    length of the memory buffer
 629  *  \param  ctx    BN_CTX object (optional)
 630  *  \return the length of the encoded octet string or 0 if an error occurred
 631  */
 632
 633 size_t EC_POINT_point2buf(const EC_GROUP *group, const EC_POINT *point,
 634                           point_conversion_form_t form,
 635                           unsigned char **pbuf, BN_CTX *ctx);
 636
 637 /* other interfaces to point2oct/oct2point: */
 638 BIGNUM *EC_POINT_point2bn(const EC_GROUP *, const EC_POINT *,
 639                           point_conversion_form_t form, BIGNUM *, BN_CTX *);
 640 EC_POINT *EC_POINT_bn2point(const EC_GROUP *, const BIGNUM *,
 641                             EC_POINT *, BN_CTX *);
 642 char *EC_POINT_point2hex(const EC_GROUP *, const EC_POINT *,
 643                          point_conversion_form_t form, BN_CTX *);
 644 EC_POINT *EC_POINT_hex2point(const EC_GROUP *, const char *,
 645                              EC_POINT *, BN_CTX *);
 646
 647 /********************************************************************/
 648 /*         functions for doing EC_POINT arithmetic                  */
 649 /********************************************************************/
 650
 651 /** Computes the sum of two EC_POINT
 652  *  \param  group  underlying EC_GROUP object
 653  *  \param  r      EC_POINT object for the result (r = a + b)
 654  *  \param  a      EC_POINT object with the first summand
 655  *  \param  b      EC_POINT object with the second summand
 656  *  \param  ctx    BN_CTX object (optional)
 657  *  \return 1 on success and 0 if an error occurred
 658  */
 659 int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
 660                  const EC_POINT *b, BN_CTX *ctx);
 661
 662 /** Computes the double of a EC_POINT
 663  *  \param  group  underlying EC_GROUP object
 664  *  \param  r      EC_POINT object for the result (r = 2 * a)
 665  *  \param  a      EC_POINT object
 666  *  \param  ctx    BN_CTX object (optional)
 667  *  \return 1 on success and 0 if an error occurred
 668  */
 669 int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a,
 670                  BN_CTX *ctx);
 671
 672 /** Computes the inverse of a EC_POINT
 673  *  \param  group  underlying EC_GROUP object
 674  *  \param  a      EC_POINT object to be inverted (it's used for the result as well)
 675  *  \param  ctx    BN_CTX object (optional)
 676  *  \return 1 on success and 0 if an error occurred
 677  */
 678 int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx);
 679
 680 /** Checks whether the point is the neutral element of the group
 681  *  \param  group  the underlying EC_GROUP object
 682  *  \param  p      EC_POINT object
 683  *  \return 1 if the point is the neutral element and 0 otherwise
 684  */
 685 int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *p);
 686
 687 /** Checks whether the point is on the curve
 688  *  \param  group  underlying EC_GROUP object
 689  *  \param  point  EC_POINT object to check
 690  *  \param  ctx    BN_CTX object (optional)
 691  *  \return 1 if point if on the curve and 0 otherwise
 692  */
 693 int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point,
 694                          BN_CTX *ctx);
 695
 696 /** Compares two EC_POINTs
 697  *  \param  group  underlying EC_GROUP object
 698  *  \param  a      first EC_POINT object
 699  *  \param  b      second EC_POINT object
 700  *  \param  ctx    BN_CTX object (optional)
 701  *  \return 0 if both points are equal and a value != 0 otherwise
 702  */
 703 int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b,
 704                  BN_CTX *ctx);
 705
 706 int EC_POINT_make_affine(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx);
 707 int EC_POINTs_make_affine(const EC_GROUP *group, size_t num,
 708                           EC_POINT *points[], BN_CTX *ctx);
 709
 710 /** Computes r = generator * n sum_{i=0}^{num-1} p[i] * m[i]
 711  *  \param  group  underlying EC_GROUP object
 712  *  \param  r      EC_POINT object for the result
 713  *  \param  n      BIGNUM with the multiplier for the group generator (optional)
 714  *  \param  num    number further summands
 715  *  \param  p      array of size num of EC_POINT objects
 716  *  \param  m      array of size num of BIGNUM objects
 717  *  \param  ctx    BN_CTX object (optional)
 718  *  \return 1 on success and 0 if an error occurred
 719  */
 720 int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n,
 721                   size_t num, const EC_POINT *p[], const BIGNUM *m[],
 722                   BN_CTX *ctx);
 723
 724 /** Computes r = generator * n + q * m
 725  *  \param  group  underlying EC_GROUP object
 726  *  \param  r      EC_POINT object for the result
 727  *  \param  n      BIGNUM with the multiplier for the group generator (optional)
 728  *  \param  q      EC_POINT object with the first factor of the second summand
 729  *  \param  m      BIGNUM with the second factor of the second summand
 730  *  \param  ctx    BN_CTX object (optional)
 731  *  \return 1 on success and 0 if an error occurred
 732  */
 733 int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *n,
 734                  const EC_POINT *q, const BIGNUM *m, BN_CTX *ctx);
 735
 736 /** Stores multiples of generator for faster point multiplication
 737  *  \param  group  EC_GROUP object
 738  *  \param  ctx    BN_CTX object (optional)
 739  *  \return 1 on success and 0 if an error occurred
 740  */
 741 int EC_GROUP_precompute_mult(EC_GROUP *group, BN_CTX *ctx);
 742
 743 /** Reports whether a precomputation has been done
 744  *  \param  group  EC_GROUP object
 745  *  \return 1 if a pre-computation has been done and 0 otherwise
 746  */
 747 int EC_GROUP_have_precompute_mult(const EC_GROUP *group);
 748
 749 /********************************************************************/
 750 /*                       ASN1 stuff                                 */
 751 /********************************************************************/
 752
 753 DECLARE_ASN1_ITEM(ECPKPARAMETERS)
 754 DECLARE_ASN1_ITEM(ECPARAMETERS)
 755
 756 /*
 757  * EC_GROUP_get_basis_type() returns the NID of the basis type used to
 758  * represent the field elements
 759  */
 760 int EC_GROUP_get_basis_type(const EC_GROUP *);
 761 # ifndef OPENSSL_NO_EC2M
 762 int EC_GROUP_get_trinomial_basis(const EC_GROUP *, unsigned int *k);
 763 int EC_GROUP_get_pentanomial_basis(const EC_GROUP *, unsigned int *k1,
 764                                    unsigned int *k2, unsigned int *k3);
 765 # endif
 766
 767 # define OPENSSL_EC_EXPLICIT_CURVE  0x000
 768 # define OPENSSL_EC_NAMED_CURVE     0x001
 769
 770 EC_GROUP *d2i_ECPKParameters(EC_GROUP **, const unsigned char **in, long len);
 771 int i2d_ECPKParameters(const EC_GROUP *, unsigned char **out);
 772
 773 # define d2i_ECPKParameters_bio(bp,x) ASN1_d2i_bio_of(EC_GROUP,NULL,d2i_ECPKParameters,bp,x)
 774 # define i2d_ECPKParameters_bio(bp,x) ASN1_i2d_bio_of_const(EC_GROUP,i2d_ECPKParameters,bp,x)
 775 # define d2i_ECPKParameters_fp(fp,x) (EC_GROUP *)ASN1_d2i_fp(NULL, \
 776                 (char *(*)())d2i_ECPKParameters,(fp),(unsigned char **)(x))
 777 # define i2d_ECPKParameters_fp(fp,x) ASN1_i2d_fp(i2d_ECPKParameters,(fp), \
 778                 (unsigned char *)(x))
 779
 780 int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off);
 781 # ifndef OPENSSL_NO_STDIO
 782 int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off);
 783 # endif
 784
 785 /********************************************************************/
 786 /*                      EC_KEY functions                            */
 787 /********************************************************************/
 788
 789 /* some values for the encoding_flag */
 790 # define EC_PKEY_NO_PARAMETERS   0x001
 791 # define EC_PKEY_NO_PUBKEY       0x002
 792
 793 /* some values for the flags field */
 794 # define EC_FLAG_NON_FIPS_ALLOW  0x1
 795 # define EC_FLAG_FIPS_CHECKED    0x2
 796 # define EC_FLAG_COFACTOR_ECDH   0x1000
 797
 798 /** Creates a new EC_KEY object.
 799  *  \return EC_KEY object or NULL if an error occurred.
 800  */
 801 EC_KEY *EC_KEY_new(void);
 802
 803 int EC_KEY_get_flags(const EC_KEY *key);
 804
 805 void EC_KEY_set_flags(EC_KEY *key, int flags);
 806
 807 void EC_KEY_clear_flags(EC_KEY *key, int flags);
 808
 809 /** Creates a new EC_KEY object using a named curve as underlying
 810  *  EC_GROUP object.
 811  *  \param  nid  NID of the named curve.
 812  *  \return EC_KEY object or NULL if an error occurred.
 813  */
 814 EC_KEY *EC_KEY_new_by_curve_name(int nid);
 815
 816 /** Frees a EC_KEY object.
 817  *  \param  key  EC_KEY object to be freed.
 818  */
 819 void EC_KEY_free(EC_KEY *key);
 820
 821 /** Copies a EC_KEY object.
 822  *  \param  dst  destination EC_KEY object
 823  *  \param  src  src EC_KEY object
 824  *  \return dst or NULL if an error occurred.
 825  */
 826 EC_KEY *EC_KEY_copy(EC_KEY *dst, EC_KEY *src);
 827
 828 /** Creates a new EC_KEY object and copies the content from src to it.
 829  *  \param  src  the source EC_KEY object
 830  *  \return newly created EC_KEY object or NULL if an error occurred.
 831  */
 832 EC_KEY *EC_KEY_dup(EC_KEY *src);
 833
 834 /** Increases the internal reference count of a EC_KEY object.
 835  *  \param  key  EC_KEY object
 836  *  \return 1 on success and 0 if an error occurred.
 837  */
 838 int EC_KEY_up_ref(EC_KEY *key);
 839
 840 /** Returns the EC_GROUP object of a EC_KEY object
 841  *  \param  key  EC_KEY object
 842  *  \return the EC_GROUP object (possibly NULL).
 843  */
 844 const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key);
 845
 846 /** Sets the EC_GROUP of a EC_KEY object.
 847  *  \param  key    EC_KEY object
 848  *  \param  group  EC_GROUP to use in the EC_KEY object (note: the EC_KEY
 849  *                 object will use an own copy of the EC_GROUP).
 850  *  \return 1 on success and 0 if an error occurred.
 851  */
 852 int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group);
 853
 854 /** Returns the private key of a EC_KEY object.
 855  *  \param  key  EC_KEY object
 856  *  \return a BIGNUM with the private key (possibly NULL).
 857  */
 858 const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key);
 859
 860 /** Sets the private key of a EC_KEY object.
 861  *  \param  key  EC_KEY object
 862  *  \param  prv  BIGNUM with the private key (note: the EC_KEY object
 863  *               will use an own copy of the BIGNUM).
 864  *  \return 1 on success and 0 if an error occurred.
 865  */
 866 int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *prv);
 867
 868 /** Returns the public key of a EC_KEY object.
 869  *  \param  key  the EC_KEY object
 870  *  \return a EC_POINT object with the public key (possibly NULL)
 871  */
 872 const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key);
 873
 874 /** Sets the public key of a EC_KEY object.
 875  *  \param  key  EC_KEY object
 876  *  \param  pub  EC_POINT object with the public key (note: the EC_KEY object
 877  *               will use an own copy of the EC_POINT object).
 878  *  \return 1 on success and 0 if an error occurred.
 879  */
 880 int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub);
 881
 882 unsigned EC_KEY_get_enc_flags(const EC_KEY *key);
 883 void EC_KEY_set_enc_flags(EC_KEY *eckey, unsigned int flags);
 884 point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key);
 885 void EC_KEY_set_conv_form(EC_KEY *eckey, point_conversion_form_t cform);
 886
 887 #define EC_KEY_get_ex_new_index(l, p, newf, dupf, freef) \
 888     CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_EC_KEY, l, p, newf, dupf, freef)
 889 int EC_KEY_set_ex_data(EC_KEY *key, int idx, void *arg);
 890 void *EC_KEY_get_ex_data(const EC_KEY *key, int idx);
 891
 892 /* wrapper functions for the underlying EC_GROUP object */
 893 void EC_KEY_set_asn1_flag(EC_KEY *eckey, int asn1_flag);
 894
 895 /** Creates a table of pre-computed multiples of the generator to
 896  *  accelerate further EC_KEY operations.
 897  *  \param  key  EC_KEY object
 898  *  \param  ctx  BN_CTX object (optional)
 899  *  \return 1 on success and 0 if an error occurred.
 900  */
 901 int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx);
 902
 903 /** Creates a new ec private (and optional a new public) key.
 904  *  \param  key  EC_KEY object
 905  *  \return 1 on success and 0 if an error occurred.
 906  */
 907 int EC_KEY_generate_key(EC_KEY *key);
 908
 909 /** Verifies that a private and/or public key is valid.
 910  *  \param  key  the EC_KEY object
 911  *  \return 1 on success and 0 otherwise.
 912  */
 913 int EC_KEY_check_key(const EC_KEY *key);
 914
 915 /** Indicates if an EC_KEY can be used for signing.
 916  *  \param  key  the EC_KEY object
 917  *  \return 1 if can can sign and 0 otherwise.
 918  */
 919 int EC_KEY_can_sign(const EC_KEY *eckey);
 920
 921 /** Sets a public key from affine coordinates performing
 922  *  necessary NIST PKV tests.
 923  *  \param  key  the EC_KEY object
 924  *  \param  x    public key x coordinate
 925  *  \param  y    public key y coordinate
 926  *  \return 1 on success and 0 otherwise.
 927  */
 928 int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x,
 929                                              BIGNUM *y);
 930
 931 /** Encodes an EC_KEY public key to an allocated octet string
 932  *  \param  key    key to encode
 933  *  \param  form   point conversion form
 934  *  \param  pbuf   returns pointer to allocated buffer
 935  *  \param  len    length of the memory buffer
 936  *  \param  ctx    BN_CTX object (optional)
 937  *  \return the length of the encoded octet string or 0 if an error occurred
 938  */
 939
 940 size_t EC_KEY_key2buf(const EC_KEY *key, point_conversion_form_t form,
 941                       unsigned char **pbuf, BN_CTX *ctx);
 942
 943 /** Decodes a EC_KEY public key from a octet string
 944  *  \param  key    key to decode
 945  *  \param  buf    memory buffer with the encoded ec point
 946  *  \param  len    length of the encoded ec point
 947  *  \param  ctx    BN_CTX object (optional)
 948  *  \return 1 on success and 0 if an error occurred
 949  */
 950
 951 int EC_KEY_oct2key(EC_KEY *key, const unsigned char *buf, size_t len,
 952                    BN_CTX *ctx);
 953
 954 /** Decodes an EC_KEY private key from an octet string
 955  *  \param  key    key to decode
 956  *  \param  buf    memory buffer with the encoded private key
 957  *  \param  len    length of the encoded key
 958  *  \return 1 on success and 0 if an error occurred
 959  */
 960
 961 int EC_KEY_oct2priv(EC_KEY *key, unsigned char *buf, size_t len);
 962
 963 /** Encodes a EC_KEY private key to an octet string
 964  *  \param  key    key to encode
 965  *  \param  buf    memory buffer for the result. If NULL the function returns
 966  *                 required buffer size.
 967  *  \param  len    length of the memory buffer
 968  *  \return the length of the encoded octet string or 0 if an error occurred
 969  */
 970
 971 size_t EC_KEY_priv2oct(const EC_KEY *key, unsigned char *buf, size_t len);
 972
 973 /** Encodes an EC_KEY private key to an allocated octet string
 974  *  \param  key    key to encode
 975  *  \param  pbuf   returns pointer to allocated buffer
 976  *  \return the length of the encoded octet string or 0 if an error occurred
 977  */
 978
 979 size_t EC_KEY_priv2buf(const EC_KEY *eckey, unsigned char **pbuf);
 980
 981 /********************************************************************/
 982 /*        de- and encoding functions for SEC1 ECPrivateKey          */
 983 /********************************************************************/
 984
 985 /** Decodes a private key from a memory buffer.
 986  *  \param  key  a pointer to a EC_KEY object which should be used (or NULL)
 987  *  \param  in   pointer to memory with the DER encoded private key
 988  *  \param  len  length of the DER encoded private key
 989  *  \return the decoded private key or NULL if an error occurred.
 990  */
 991 EC_KEY *d2i_ECPrivateKey(EC_KEY **key, const unsigned char **in, long len);
 992
 993 /** Encodes a private key object and stores the result in a buffer.
 994  *  \param  key  the EC_KEY object to encode
 995  *  \param  out  the buffer for the result (if NULL the function returns number
 996  *               of bytes needed).
 997  *  \return 1 on success and 0 if an error occurred.
 998  */
 999 int i2d_ECPrivateKey(EC_KEY *key, unsigned char **out);
1000
1001 /********************************************************************/
1002 /*        de- and encoding functions for EC parameters              */
1003 /********************************************************************/
1004
1005 /** Decodes ec parameter from a memory buffer.
1006  *  \param  key  a pointer to a EC_KEY object which should be used (or NULL)
1007  *  \param  in   pointer to memory with the DER encoded ec parameters
1008  *  \param  len  length of the DER encoded ec parameters
1009  *  \return a EC_KEY object with the decoded parameters or NULL if an error
1010  *          occurred.
1011  */
1012 EC_KEY *d2i_ECParameters(EC_KEY **key, const unsigned char **in, long len);
1013
1014 /** Encodes ec parameter and stores the result in a buffer.
1015  *  \param  key  the EC_KEY object with ec parameters to encode
1016  *  \param  out  the buffer for the result (if NULL the function returns number
1017  *               of bytes needed).
1018  *  \return 1 on success and 0 if an error occurred.
1019  */
1020 int i2d_ECParameters(EC_KEY *key, unsigned char **out);
1021
1022 /********************************************************************/
1023 /*         de- and encoding functions for EC public key             */
1024 /*         (octet string, not DER -- hence 'o2i' and 'i2o')         */
1025 /********************************************************************/
1026
1027 /** Decodes a ec public key from a octet string.
1028  *  \param  key  a pointer to a EC_KEY object which should be used
1029  *  \param  in   memory buffer with the encoded public key
1030  *  \param  len  length of the encoded public key
1031  *  \return EC_KEY object with decoded public key or NULL if an error
1032  *          occurred.
1033  */
1034 EC_KEY *o2i_ECPublicKey(EC_KEY **key, const unsigned char **in, long len);
1035
1036 /** Encodes a ec public key in an octet string.
1037  *  \param  key  the EC_KEY object with the public key
1038  *  \param  out  the buffer for the result (if NULL the function returns number
1039  *               of bytes needed).
1040  *  \return 1 on success and 0 if an error occurred
1041  */
1042 int i2o_ECPublicKey(EC_KEY *key, unsigned char **out);
1043
1044 /** Prints out the ec parameters on human readable form.
1045  *  \param  bp   BIO object to which the information is printed
1046  *  \param  key  EC_KEY object
1047  *  \return 1 on success and 0 if an error occurred
1048  */
1049 int ECParameters_print(BIO *bp, const EC_KEY *key);
1050
1051 /** Prints out the contents of a EC_KEY object
1052  *  \param  bp   BIO object to which the information is printed
1053  *  \param  key  EC_KEY object
1054  *  \param  off  line offset
1055  *  \return 1 on success and 0 if an error occurred
1056  */
1057 int EC_KEY_print(BIO *bp, const EC_KEY *key, int off);
1058
1059 # ifndef OPENSSL_NO_STDIO
1060 /** Prints out the ec parameters on human readable form.
1061  *  \param  fp   file descriptor to which the information is printed
1062  *  \param  key  EC_KEY object
1063  *  \return 1 on success and 0 if an error occurred
1064  */
1065 int ECParameters_print_fp(FILE *fp, const EC_KEY *key);
1066
1067 /** Prints out the contents of a EC_KEY object
1068  *  \param  fp   file descriptor to which the information is printed
1069  *  \param  key  EC_KEY object
1070  *  \param  off  line offset
1071  *  \return 1 on success and 0 if an error occurred
1072  */
1073 int EC_KEY_print_fp(FILE *fp, const EC_KEY *key, int off);
1074
1075 # endif
1076
1077 const EC_KEY_METHOD *EC_KEY_OpenSSL(void);
1078 const EC_KEY_METHOD *EC_KEY_get_default_method(void);
1079 void EC_KEY_set_default_method(const EC_KEY_METHOD *meth);
1080 const EC_KEY_METHOD *EC_KEY_get_method(const EC_KEY *key);
1081 int EC_KEY_set_method(EC_KEY *key, const EC_KEY_METHOD *meth);
1082 EC_KEY *EC_KEY_new_method(ENGINE *engine);
1083
1084 int ECDH_KDF_X9_62(unsigned char *out, size_t outlen,
1085                    const unsigned char *Z, size_t Zlen,
1086                    const unsigned char *sinfo, size_t sinfolen,
1087                    const EVP_MD *md);
1088
1089 int ECDH_compute_key(void *out, size_t outlen, const EC_POINT *pub_key,
1090                      const EC_KEY *ecdh,
1091                      void *(*KDF) (const void *in, size_t inlen,
1092                                    void *out, size_t *outlen));
1093
1094 typedef struct ECDSA_SIG_st ECDSA_SIG;
1095
1096 /** Allocates and initialize a ECDSA_SIG structure
1097  *  \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1098  */
1099 ECDSA_SIG *ECDSA_SIG_new(void);
1100
1101 /** frees a ECDSA_SIG structure
1102  *  \param  sig  pointer to the ECDSA_SIG structure
1103  */
1104 void ECDSA_SIG_free(ECDSA_SIG *sig);
1105
1106 /** DER encode content of ECDSA_SIG object (note: this function modifies *pp
1107  *  (*pp += length of the DER encoded signature)).
1108  *  \param  sig  pointer to the ECDSA_SIG object
1109  *  \param  pp   pointer to a unsigned char pointer for the output or NULL
1110  *  \return the length of the DER encoded ECDSA_SIG object or 0
1111  */
1112 int i2d_ECDSA_SIG(const ECDSA_SIG *sig, unsigned char **pp);
1113
1114 /** Decodes a DER encoded ECDSA signature (note: this function changes *pp
1115  *  (*pp += len)).
1116  *  \param  sig  pointer to ECDSA_SIG pointer (may be NULL)
1117  *  \param  pp   memory buffer with the DER encoded signature
1118  *  \param  len  length of the buffer
1119  *  \return pointer to the decoded ECDSA_SIG structure (or NULL)
1120  */
1121 ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **sig, const unsigned char **pp, long len);
1122
1123 /** Accessor for r and s fields of ECDSA_SIG
1124  *  \param  sig  pointer to ECDSA_SIG pointer
1125  *  \param  pr   pointer to BIGNUM pointer for r (may be NULL)
1126  *  \param  ps   pointer to BIGNUM pointer for s (may be NULL)
1127  */
1128 void ECDSA_SIG_get0(BIGNUM **pr, BIGNUM **ps, const ECDSA_SIG *sig);
1129
1130 /** Computes the ECDSA signature of the given hash value using
1131  *  the supplied private key and returns the created signature.
1132  *  \param  dgst      pointer to the hash value
1133  *  \param  dgst_len  length of the hash value
1134  *  \param  eckey     EC_KEY object containing a private EC key
1135  *  \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1136  */
1137 ECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst, int dgst_len,
1138                          EC_KEY *eckey);
1139
1140 /** Computes ECDSA signature of a given hash value using the supplied
1141  *  private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1142  *  \param  dgst     pointer to the hash value to sign
1143  *  \param  dgstlen  length of the hash value
1144  *  \param  kinv     BIGNUM with a pre-computed inverse k (optional)
1145  *  \param  rp       BIGNUM with a pre-computed rp value (optional),
1146  *                   see ECDSA_sign_setup
1147  *  \param  eckey    EC_KEY object containing a private EC key
1148  *  \return pointer to a ECDSA_SIG structure or NULL if an error occurred
1149  */
1150 ECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *dgst, int dgstlen,
1151                             const BIGNUM *kinv, const BIGNUM *rp,
1152                             EC_KEY *eckey);
1153
1154 /** Verifies that the supplied signature is a valid ECDSA
1155  *  signature of the supplied hash value using the supplied public key.
1156  *  \param  dgst      pointer to the hash value
1157  *  \param  dgst_len  length of the hash value
1158  *  \param  sig       ECDSA_SIG structure
1159  *  \param  eckey     EC_KEY object containing a public EC key
1160  *  \return 1 if the signature is valid, 0 if the signature is invalid
1161  *          and -1 on error
1162  */
1163 int ECDSA_do_verify(const unsigned char *dgst, int dgst_len,
1164                     const ECDSA_SIG *sig, EC_KEY *eckey);
1165
1166 /** Precompute parts of the signing operation
1167  *  \param  eckey  EC_KEY object containing a private EC key
1168  *  \param  ctx    BN_CTX object (optional)
1169  *  \param  kinv   BIGNUM pointer for the inverse of k
1170  *  \param  rp     BIGNUM pointer for x coordinate of k * generator
1171  *  \return 1 on success and 0 otherwise
1172  */
1173 int ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx, BIGNUM **kinv, BIGNUM **rp);
1174
1175 /** Computes ECDSA signature of a given hash value using the supplied
1176  *  private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1177  *  \param  type     this parameter is ignored
1178  *  \param  dgst     pointer to the hash value to sign
1179  *  \param  dgstlen  length of the hash value
1180  *  \param  sig      memory for the DER encoded created signature
1181  *  \param  siglen   pointer to the length of the returned signature
1182  *  \param  eckey    EC_KEY object containing a private EC key
1183  *  \return 1 on success and 0 otherwise
1184  */
1185 int ECDSA_sign(int type, const unsigned char *dgst, int dgstlen,
1186                unsigned char *sig, unsigned int *siglen, EC_KEY *eckey);
1187
1188 /** Computes ECDSA signature of a given hash value using the supplied
1189  *  private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
1190  *  \param  type     this parameter is ignored
1191  *  \param  dgst     pointer to the hash value to sign
1192  *  \param  dgstlen  length of the hash value
1193  *  \param  sig      buffer to hold the DER encoded signature
1194  *  \param  siglen   pointer to the length of the returned signature
1195  *  \param  kinv     BIGNUM with a pre-computed inverse k (optional)
1196  *  \param  rp       BIGNUM with a pre-computed rp value (optional),
1197  *                   see ECDSA_sign_setup
1198  *  \param  eckey    EC_KEY object containing a private EC key
1199  *  \return 1 on success and 0 otherwise
1200  */
1201 int ECDSA_sign_ex(int type, const unsigned char *dgst, int dgstlen,
1202                   unsigned char *sig, unsigned int *siglen,
1203                   const BIGNUM *kinv, const BIGNUM *rp, EC_KEY *eckey);
1204
1205 /** Verifies that the given signature is valid ECDSA signature
1206  *  of the supplied hash value using the specified public key.
1207  *  \param  type     this parameter is ignored
1208  *  \param  dgst     pointer to the hash value
1209  *  \param  dgstlen  length of the hash value
1210  *  \param  sig      pointer to the DER encoded signature
1211  *  \param  siglen   length of the DER encoded signature
1212  *  \param  eckey    EC_KEY object containing a public EC key
1213  *  \return 1 if the signature is valid, 0 if the signature is invalid
1214  *          and -1 on error
1215  */
1216 int ECDSA_verify(int type, const unsigned char *dgst, int dgstlen,
1217                  const unsigned char *sig, int siglen, EC_KEY *eckey);
1218
1219 /** Returns the maximum length of the DER encoded signature
1220  *  \param  eckey  EC_KEY object
1221  *  \return numbers of bytes required for the DER encoded signature
1222  */
1223 int ECDSA_size(const EC_KEY *eckey);
1224
1225 /********************************************************************/
1226 /*  EC_KEY_METHOD constructors, destructors, writers and accessors  */
1227 /********************************************************************/
1228
1229 EC_KEY_METHOD *EC_KEY_METHOD_new(const EC_KEY_METHOD *meth);
1230 void EC_KEY_METHOD_free(EC_KEY_METHOD *meth);
1231 void EC_KEY_METHOD_set_init(EC_KEY_METHOD *meth,
1232                             int (*init)(EC_KEY *key),
1233                             void (*finish)(EC_KEY *key),
1234                             int (*copy)(EC_KEY *dest, const EC_KEY *src),
1235                             int (*set_group)(EC_KEY *key, const EC_GROUP *grp),
1236                             int (*set_private)(EC_KEY *key,
1237                                                const BIGNUM *priv_key),
1238                             int (*set_public)(EC_KEY *key,
1239                                               const EC_POINT *pub_key));
1240
1241 void EC_KEY_METHOD_set_keygen(EC_KEY_METHOD *meth,
1242                               int (*keygen)(EC_KEY *key));
1243
1244 void EC_KEY_METHOD_set_compute_key(EC_KEY_METHOD *meth,
1245                                    int (*ckey)(unsigned char **psec,
1246                                                size_t *pseclen,
1247                                                const EC_POINT *pub_key,
1248                                                const EC_KEY *ecdh));
1249
1250 void EC_KEY_METHOD_set_sign(EC_KEY_METHOD *meth,
1251                             int (*sign)(int type, const unsigned char *dgst,
1252                                         int dlen, unsigned char *sig,
1253                                         unsigned int *siglen,
1254                                         const BIGNUM *kinv, const BIGNUM *r,
1255                                         EC_KEY *eckey),
1256                             int (*sign_setup)(EC_KEY *eckey, BN_CTX *ctx_in,
1257                                               BIGNUM **kinvp, BIGNUM **rp),
1258                             ECDSA_SIG *(*sign_sig)(const unsigned char *dgst,
1259                                                    int dgst_len,
1260                                                    const BIGNUM *in_kinv,
1261                                                    const BIGNUM *in_r,
1262                                                    EC_KEY *eckey));
1263
1264 void EC_KEY_METHOD_set_verify(EC_KEY_METHOD *meth,
1265                               int (*verify)(int type, const unsigned
1266                                             char *dgst, int dgst_len,
1267                                             const unsigned char *sigbuf,
1268                                             int sig_len, EC_KEY *eckey),
1269                               int (*verify_sig)(const unsigned char *dgst,
1270                                                 int dgst_len,
1271                                                 const ECDSA_SIG *sig,
1272                                                 EC_KEY *eckey));
1273
1274 void EC_KEY_METHOD_get_init(EC_KEY_METHOD *meth,
1275                             int (**pinit)(EC_KEY *key),
1276                             void (**pfinish)(EC_KEY *key),
1277                             int (**pcopy)(EC_KEY *dest, const EC_KEY *src),
1278                             int (**pset_group)(EC_KEY *key,
1279                                                const EC_GROUP *grp),
1280                             int (**pset_private)(EC_KEY *key,
1281                                                  const BIGNUM *priv_key),
1282                             int (**pset_public)(EC_KEY *key,
1283                                                 const EC_POINT *pub_key));
1284
1285 void EC_KEY_METHOD_get_keygen(EC_KEY_METHOD *meth,
1286                               int (**pkeygen)(EC_KEY *key));
1287
1288 void EC_KEY_METHOD_get_compute_key(EC_KEY_METHOD *meth,
1289                                    int (**pck)(unsigned char **psec,
1290                                                size_t *pseclen,
1291                                                const EC_POINT *pub_key,
1292                                                const EC_KEY *ecdh));
1293
1294 void EC_KEY_METHOD_get_sign(EC_KEY_METHOD *meth,
1295                             int (**psign)(int type, const unsigned char *dgst,
1296                                           int dlen, unsigned char *sig,
1297                                           unsigned int *siglen,
1298                                           const BIGNUM *kinv, const BIGNUM *r,
1299                                           EC_KEY *eckey),
1300                             int (**psign_setup)(EC_KEY *eckey, BN_CTX *ctx_in,
1301                                                 BIGNUM **kinvp, BIGNUM **rp),
1302                             ECDSA_SIG *(**psign_sig)(const unsigned char *dgst,
1303                                                      int dgst_len,
1304                                                      const BIGNUM *in_kinv,
1305                                                      const BIGNUM *in_r,
1306                                                      EC_KEY *eckey));
1307
1308 void EC_KEY_METHOD_get_verify(EC_KEY_METHOD *meth,
1309                               int (**pverify)(int type, const unsigned
1310                                               char *dgst, int dgst_len,
1311                                               const unsigned char *sigbuf,
1312                                               int sig_len, EC_KEY *eckey),
1313                               int (**pverify_sig)(const unsigned char *dgst,
1314                                                   int dgst_len,
1315                                                   const ECDSA_SIG *sig,
1316                                                   EC_KEY *eckey));
1317
1318 # define ECParameters_dup(x) ASN1_dup_of(EC_KEY,i2d_ECParameters,d2i_ECParameters,x)
1319
1320 # ifndef __cplusplus
1321 #  if defined(__SUNPRO_C)
1322 #   if __SUNPRO_C >= 0x520
1323 #    pragma error_messages (default,E_ARRAY_OF_INCOMPLETE_NONAME,E_ARRAY_OF_INCOMPLETE)
1324 #   endif
1325 #  endif
1326 # endif
1327
1328 # define EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid) \
1329         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1330                                 EVP_PKEY_OP_PARAMGEN|EVP_PKEY_OP_KEYGEN, \
1331                                 EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID, nid, NULL)
1332
1333 # define EVP_PKEY_CTX_set_ec_param_enc(ctx, flag) \
1334         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1335                                 EVP_PKEY_OP_PARAMGEN|EVP_PKEY_OP_KEYGEN, \
1336                                 EVP_PKEY_CTRL_EC_PARAM_ENC, flag, NULL)
1337
1338 # define EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, flag) \
1339         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1340                                 EVP_PKEY_OP_DERIVE, \
1341                                 EVP_PKEY_CTRL_EC_ECDH_COFACTOR, flag, NULL)
1342
1343 # define EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx) \
1344         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1345                                 EVP_PKEY_OP_DERIVE, \
1346                                 EVP_PKEY_CTRL_EC_ECDH_COFACTOR, -2, NULL)
1347
1348 # define EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, kdf) \
1349         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1350                                 EVP_PKEY_OP_DERIVE, \
1351                                 EVP_PKEY_CTRL_EC_KDF_TYPE, kdf, NULL)
1352
1353 # define EVP_PKEY_CTX_get_ecdh_kdf_type(ctx) \
1354         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1355                                 EVP_PKEY_OP_DERIVE, \
1356                                 EVP_PKEY_CTRL_EC_KDF_TYPE, -2, NULL)
1357
1358 # define EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, md) \
1359         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1360                                 EVP_PKEY_OP_DERIVE, \
1361                                 EVP_PKEY_CTRL_EC_KDF_MD, 0, (void *)md)
1362
1363 # define EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, pmd) \
1364         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1365                                 EVP_PKEY_OP_DERIVE, \
1366                                 EVP_PKEY_CTRL_GET_EC_KDF_MD, 0, (void *)pmd)
1367
1368 # define EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, len) \
1369         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1370                                 EVP_PKEY_OP_DERIVE, \
1371                                 EVP_PKEY_CTRL_EC_KDF_OUTLEN, len, NULL)
1372
1373 # define EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, plen) \
1374         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1375                                 EVP_PKEY_OP_DERIVE, \
1376                         EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN, 0, (void *)plen)
1377
1378 # define EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p, plen) \
1379         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1380                                 EVP_PKEY_OP_DERIVE, \
1381                                 EVP_PKEY_CTRL_EC_KDF_UKM, plen, (void *)p)
1382
1383 # define EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p) \
1384         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC, \
1385                                 EVP_PKEY_OP_DERIVE, \
1386                                 EVP_PKEY_CTRL_GET_EC_KDF_UKM, 0, (void *)p)
1387
1388 # define EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID             (EVP_PKEY_ALG_CTRL + 1)
1389 # define EVP_PKEY_CTRL_EC_PARAM_ENC                      (EVP_PKEY_ALG_CTRL + 2)
1390 # define EVP_PKEY_CTRL_EC_ECDH_COFACTOR                  (EVP_PKEY_ALG_CTRL + 3)
1391 # define EVP_PKEY_CTRL_EC_KDF_TYPE                       (EVP_PKEY_ALG_CTRL + 4)
1392 # define EVP_PKEY_CTRL_EC_KDF_MD                         (EVP_PKEY_ALG_CTRL + 5)
1393 # define EVP_PKEY_CTRL_GET_EC_KDF_MD                     (EVP_PKEY_ALG_CTRL + 6)
1394 # define EVP_PKEY_CTRL_EC_KDF_OUTLEN                     (EVP_PKEY_ALG_CTRL + 7)
1395 # define EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN                 (EVP_PKEY_ALG_CTRL + 8)
1396 # define EVP_PKEY_CTRL_EC_KDF_UKM                        (EVP_PKEY_ALG_CTRL + 9)
1397 # define EVP_PKEY_CTRL_GET_EC_KDF_UKM                    (EVP_PKEY_ALG_CTRL + 10)
1398 /* KDF types */
1399 # define EVP_PKEY_ECDH_KDF_NONE                          1
1400 # define EVP_PKEY_ECDH_KDF_X9_62                         2
1401
1402 /* BEGIN ERROR CODES */
1403 /*
1404  * The following lines are auto generated by the script mkerr.pl. Any changes
1405  * made after this point may be overwritten when the script is next run.
1406  */
1407 void ERR_load_EC_strings(void);
1408
1409 /* Error codes for the EC functions. */
1410
1411 /* Function codes. */
1412 # define EC_F_BN_TO_FELEM                                 224
1413 # define EC_F_COMPUTE_WNAF                                143
1414 # define EC_F_D2I_ECPARAMETERS                            144
1415 # define EC_F_D2I_ECPKPARAMETERS                          145
1416 # define EC_F_D2I_ECPRIVATEKEY                            146
1417 # define EC_F_DO_EC_KEY_PRINT                             221
1418 # define EC_F_ECDH_CMS_DECRYPT                            238
1419 # define EC_F_ECDH_CMS_SET_SHARED_INFO                    239
1420 # define EC_F_ECDH_COMPUTE_KEY                            246
1421 # define EC_F_ECDH_SIMPLE_COMPUTE_KEY                     257
1422 # define EC_F_ECDSA_DO_SIGN_EX                            251
1423 # define EC_F_ECDSA_DO_VERIFY                             252
1424 # define EC_F_ECDSA_SIGN_EX                               254
1425 # define EC_F_ECDSA_SIGN_SETUP                            248
1426 # define EC_F_ECDSA_VERIFY                                253
1427 # define EC_F_ECKEY_PARAM2TYPE                            223
1428 # define EC_F_ECKEY_PARAM_DECODE                          212
1429 # define EC_F_ECKEY_PRIV_DECODE                           213
1430 # define EC_F_ECKEY_PRIV_ENCODE                           214
1431 # define EC_F_ECKEY_PUB_DECODE                            215
1432 # define EC_F_ECKEY_PUB_ENCODE                            216
1433 # define EC_F_ECKEY_TYPE2PARAM                            220
1434 # define EC_F_ECPARAMETERS_PRINT                          147
1435 # define EC_F_ECPARAMETERS_PRINT_FP                       148
1436 # define EC_F_ECPKPARAMETERS_PRINT                        149
1437 # define EC_F_ECPKPARAMETERS_PRINT_FP                     150
1438 # define EC_F_ECP_NISTZ256_GET_AFFINE                     240
1439 # define EC_F_ECP_NISTZ256_MULT_PRECOMPUTE                243
1440 # define EC_F_ECP_NISTZ256_POINTS_MUL                     241
1441 # define EC_F_ECP_NISTZ256_PRE_COMP_NEW                   244
1442 # define EC_F_ECP_NISTZ256_WINDOWED_MUL                   242
1443 # define EC_F_ECP_NIST_MOD_192                            203
1444 # define EC_F_ECP_NIST_MOD_224                            204
1445 # define EC_F_ECP_NIST_MOD_256                            205
1446 # define EC_F_ECP_NIST_MOD_521                            206
1447 # define EC_F_EC_ASN1_GROUP2CURVE                         153
1448 # define EC_F_EC_ASN1_GROUP2FIELDID                       154
1449 # define EC_F_EC_ASN1_GROUP2PARAMETERS                    155
1450 # define EC_F_EC_ASN1_GROUP2PKPARAMETERS                  156
1451 # define EC_F_EC_ASN1_PARAMETERS2GROUP                    157
1452 # define EC_F_EC_ASN1_PKPARAMETERS2GROUP                  158
1453 # define EC_F_EC_EX_DATA_SET_DATA                         211
1454 # define EC_F_EC_GF2M_MONTGOMERY_POINT_MULTIPLY           208
1455 # define EC_F_EC_GF2M_SIMPLE_GROUP_CHECK_DISCRIMINANT     159
1456 # define EC_F_EC_GF2M_SIMPLE_GROUP_SET_CURVE              195
1457 # define EC_F_EC_GF2M_SIMPLE_OCT2POINT                    160
1458 # define EC_F_EC_GF2M_SIMPLE_POINT2OCT                    161
1459 # define EC_F_EC_GF2M_SIMPLE_POINT_GET_AFFINE_COORDINATES 162
1460 # define EC_F_EC_GF2M_SIMPLE_POINT_SET_AFFINE_COORDINATES 163
1461 # define EC_F_EC_GF2M_SIMPLE_SET_COMPRESSED_COORDINATES   164
1462 # define EC_F_EC_GFP_MONT_FIELD_DECODE                    133
1463 # define EC_F_EC_GFP_MONT_FIELD_ENCODE                    134
1464 # define EC_F_EC_GFP_MONT_FIELD_MUL                       131
1465 # define EC_F_EC_GFP_MONT_FIELD_SET_TO_ONE                209
1466 # define EC_F_EC_GFP_MONT_FIELD_SQR                       132
1467 # define EC_F_EC_GFP_MONT_GROUP_SET_CURVE                 189
1468 # define EC_F_EC_GFP_MONT_GROUP_SET_CURVE_GFP             135
1469 # define EC_F_EC_GFP_NISTP224_GROUP_SET_CURVE             225
1470 # define EC_F_EC_GFP_NISTP224_POINTS_MUL                  228
1471 # define EC_F_EC_GFP_NISTP224_POINT_GET_AFFINE_COORDINATES 226
1472 # define EC_F_EC_GFP_NISTP256_GROUP_SET_CURVE             230
1473 # define EC_F_EC_GFP_NISTP256_POINTS_MUL                  231
1474 # define EC_F_EC_GFP_NISTP256_POINT_GET_AFFINE_COORDINATES 232
1475 # define EC_F_EC_GFP_NISTP521_GROUP_SET_CURVE             233
1476 # define EC_F_EC_GFP_NISTP521_POINTS_MUL                  234
1477 # define EC_F_EC_GFP_NISTP521_POINT_GET_AFFINE_COORDINATES 235
1478 # define EC_F_EC_GFP_NIST_FIELD_MUL                       200
1479 # define EC_F_EC_GFP_NIST_FIELD_SQR                       201
1480 # define EC_F_EC_GFP_NIST_GROUP_SET_CURVE                 202
1481 # define EC_F_EC_GFP_SIMPLE_GROUP_CHECK_DISCRIMINANT      165
1482 # define EC_F_EC_GFP_SIMPLE_GROUP_SET_CURVE               166
1483 # define EC_F_EC_GFP_SIMPLE_GROUP_SET_CURVE_GFP           100
1484 # define EC_F_EC_GFP_SIMPLE_GROUP_SET_GENERATOR           101
1485 # define EC_F_EC_GFP_SIMPLE_MAKE_AFFINE                   102
1486 # define EC_F_EC_GFP_SIMPLE_OCT2POINT                     103
1487 # define EC_F_EC_GFP_SIMPLE_POINT2OCT                     104
1488 # define EC_F_EC_GFP_SIMPLE_POINTS_MAKE_AFFINE            137
1489 # define EC_F_EC_GFP_SIMPLE_POINT_GET_AFFINE_COORDINATES  167
1490 # define EC_F_EC_GFP_SIMPLE_POINT_GET_AFFINE_COORDINATES_GFP 105
1491 # define EC_F_EC_GFP_SIMPLE_POINT_SET_AFFINE_COORDINATES  168
1492 # define EC_F_EC_GFP_SIMPLE_POINT_SET_AFFINE_COORDINATES_GFP 128
1493 # define EC_F_EC_GFP_SIMPLE_SET_COMPRESSED_COORDINATES    169
1494 # define EC_F_EC_GFP_SIMPLE_SET_COMPRESSED_COORDINATES_GFP 129
1495 # define EC_F_EC_GROUP_CHECK                              170
1496 # define EC_F_EC_GROUP_CHECK_DISCRIMINANT                 171
1497 # define EC_F_EC_GROUP_COPY                               106
1498 # define EC_F_EC_GROUP_GET0_GENERATOR                     139
1499 # define EC_F_EC_GROUP_GET_COFACTOR                       140
1500 # define EC_F_EC_GROUP_GET_CURVE_GF2M                     172
1501 # define EC_F_EC_GROUP_GET_CURVE_GFP                      130
1502 # define EC_F_EC_GROUP_GET_DEGREE                         173
1503 # define EC_F_EC_GROUP_GET_ECPARAMETERS                   261
1504 # define EC_F_EC_GROUP_GET_ECPKPARAMETERS                 262
1505 # define EC_F_EC_GROUP_GET_ORDER                          141
1506 # define EC_F_EC_GROUP_GET_PENTANOMIAL_BASIS              193
1507 # define EC_F_EC_GROUP_GET_TRINOMIAL_BASIS                194
1508 # define EC_F_EC_GROUP_NEW                                108
1509 # define EC_F_EC_GROUP_NEW_BY_CURVE_NAME                  174
1510 # define EC_F_EC_GROUP_NEW_FROM_DATA                      175
1511 # define EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS              263
1512 # define EC_F_EC_GROUP_NEW_FROM_ECPKPARAMETERS            264
1513 # define EC_F_EC_GROUP_PRECOMPUTE_MULT                    142
1514 # define EC_F_EC_GROUP_SET_CURVE_GF2M                     176
1515 # define EC_F_EC_GROUP_SET_CURVE_GFP                      109
1516 # define EC_F_EC_GROUP_SET_EXTRA_DATA                     110
1517 # define EC_F_EC_GROUP_SET_GENERATOR                      111
1518 # define EC_F_EC_KEY_CHECK_KEY                            177
1519 # define EC_F_EC_KEY_COPY                                 178
1520 # define EC_F_EC_KEY_GENERATE_KEY                         179
1521 # define EC_F_EC_KEY_NEW                                  182
1522 # define EC_F_EC_KEY_NEW_METHOD                           245
1523 # define EC_F_EC_KEY_OCT2PRIV                             255
1524 # define EC_F_EC_KEY_PRINT                                180
1525 # define EC_F_EC_KEY_PRINT_FP                             181
1526 # define EC_F_EC_KEY_PRIV2OCT                             256
1527 # define EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES    229
1528 # define EC_F_EC_KEY_SIMPLE_CHECK_KEY                     258
1529 # define EC_F_EC_KEY_SIMPLE_OCT2PRIV                      259
1530 # define EC_F_EC_KEY_SIMPLE_PRIV2OCT                      260
1531 # define EC_F_EC_POINTS_MAKE_AFFINE                       136
1532 # define EC_F_EC_POINT_ADD                                112
1533 # define EC_F_EC_POINT_CMP                                113
1534 # define EC_F_EC_POINT_COPY                               114
1535 # define EC_F_EC_POINT_DBL                                115
1536 # define EC_F_EC_POINT_GET_AFFINE_COORDINATES_GF2M        183
1537 # define EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP         116
1538 # define EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP    117
1539 # define EC_F_EC_POINT_INVERT                             210
1540 # define EC_F_EC_POINT_IS_AT_INFINITY                     118
1541 # define EC_F_EC_POINT_IS_ON_CURVE                        119
1542 # define EC_F_EC_POINT_MAKE_AFFINE                        120
1543 # define EC_F_EC_POINT_MUL                                184
1544 # define EC_F_EC_POINT_NEW                                121
1545 # define EC_F_EC_POINT_OCT2POINT                          122
1546 # define EC_F_EC_POINT_POINT2OCT                          123
1547 # define EC_F_EC_POINT_SET_AFFINE_COORDINATES_GF2M        185
1548 # define EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP         124
1549 # define EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GF2M    186
1550 # define EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP     125
1551 # define EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP    126
1552 # define EC_F_EC_POINT_SET_TO_INFINITY                    127
1553 # define EC_F_EC_PRE_COMP_DUP                             207
1554 # define EC_F_EC_PRE_COMP_NEW                             196
1555 # define EC_F_EC_WNAF_MUL                                 187
1556 # define EC_F_EC_WNAF_PRECOMPUTE_MULT                     188
1557 # define EC_F_I2D_ECPARAMETERS                            190
1558 # define EC_F_I2D_ECPKPARAMETERS                          191
1559 # define EC_F_I2D_ECPRIVATEKEY                            192
1560 # define EC_F_I2O_ECPUBLICKEY                             151
1561 # define EC_F_NISTP224_PRE_COMP_NEW                       227
1562 # define EC_F_NISTP256_PRE_COMP_NEW                       236
1563 # define EC_F_NISTP521_PRE_COMP_NEW                       237
1564 # define EC_F_O2I_ECPUBLICKEY                             152
1565 # define EC_F_OLD_EC_PRIV_DECODE                          222
1566 # define EC_F_OSSL_ECDH_COMPUTE_KEY                       247
1567 # define EC_F_OSSL_ECDSA_SIGN_SIG                         249
1568 # define EC_F_OSSL_ECDSA_VERIFY_SIG                       250
1569 # define EC_F_PKEY_EC_CTRL                                197
1570 # define EC_F_PKEY_EC_CTRL_STR                            198
1571 # define EC_F_PKEY_EC_DERIVE                              217
1572 # define EC_F_PKEY_EC_KEYGEN                              199
1573 # define EC_F_PKEY_EC_PARAMGEN                            219
1574 # define EC_F_PKEY_EC_SIGN                                218
1575
1576 /* Reason codes. */
1577 # define EC_R_ASN1_ERROR                                  115
1578 # define EC_R_ASN1_UNKNOWN_FIELD                          116
1579 # define EC_R_BAD_SIGNATURE                               156
1580 # define EC_R_BIGNUM_OUT_OF_RANGE                         144
1581 # define EC_R_BUFFER_TOO_SMALL                            100
1582 # define EC_R_COORDINATES_OUT_OF_RANGE                    146
1583 # define EC_R_CURVE_DOES_NOT_SUPPORT_ECDH                 160
1584 # define EC_R_CURVE_DOES_NOT_SUPPORT_SIGNING              159
1585 # define EC_R_D2I_ECPKPARAMETERS_FAILURE                  117
1586 # define EC_R_DECODE_ERROR                                142
1587 # define EC_R_DISCRIMINANT_IS_ZERO                        118
1588 # define EC_R_EC_GROUP_NEW_BY_NAME_FAILURE                119
1589 # define EC_R_FIELD_TOO_LARGE                             143
1590 # define EC_R_GF2M_NOT_SUPPORTED                          147
1591 # define EC_R_GROUP2PKPARAMETERS_FAILURE                  120
1592 # define EC_R_I2D_ECPKPARAMETERS_FAILURE                  121
1593 # define EC_R_INCOMPATIBLE_OBJECTS                        101
1594 # define EC_R_INVALID_ARGUMENT                            112
1595 # define EC_R_INVALID_COMPRESSED_POINT                    110
1596 # define EC_R_INVALID_COMPRESSION_BIT                     109
1597 # define EC_R_INVALID_CURVE                               141
1598 # define EC_R_INVALID_DIGEST                              151
1599 # define EC_R_INVALID_DIGEST_TYPE                         138
1600 # define EC_R_INVALID_ENCODING                            102
1601 # define EC_R_INVALID_FIELD                               103
1602 # define EC_R_INVALID_FORM                                104
1603 # define EC_R_INVALID_GROUP_ORDER                         122
1604 # define EC_R_INVALID_OUTPUT_LENGTH                       161
1605 # define EC_R_INVALID_PENTANOMIAL_BASIS                   132
1606 # define EC_R_INVALID_PRIVATE_KEY                         123
1607 # define EC_R_INVALID_TRINOMIAL_BASIS                     137
1608 # define EC_R_KDF_FAILED                                  153
1609 # define EC_R_KDF_PARAMETER_ERROR                         148
1610 # define EC_R_KEYS_NOT_SET                                140
1611 # define EC_R_MISSING_PARAMETERS                          124
1612 # define EC_R_MISSING_PRIVATE_KEY                         125
1613 # define EC_R_NEED_NEW_SETUP_VALUES                       157
1614 # define EC_R_NOT_A_NIST_PRIME                            135
1615 # define EC_R_NOT_A_SUPPORTED_NIST_PRIME                  136
1616 # define EC_R_NOT_IMPLEMENTED                             126
1617 # define EC_R_NOT_INITIALIZED                             111
1618 # define EC_R_NO_FIELD_MOD                                133
1619 # define EC_R_NO_PARAMETERS_SET                           139
1620 # define EC_R_NO_PRIVATE_VALUE                            154
1621 # define EC_R_OPERATION_NOT_SUPPORTED                     152
1622 # define EC_R_PASSED_NULL_PARAMETER                       134
1623 # define EC_R_PEER_KEY_ERROR                              149
1624 # define EC_R_PKPARAMETERS2GROUP_FAILURE                  127
1625 # define EC_R_POINT_ARITHMETIC_FAILURE                    155
1626 # define EC_R_POINT_AT_INFINITY                           106
1627 # define EC_R_POINT_IS_NOT_ON_CURVE                       107
1628 # define EC_R_RANDOM_NUMBER_GENERATION_FAILED             158
1629 # define EC_R_SHARED_INFO_ERROR                           150
1630 # define EC_R_SLOT_FULL                                   108
1631 # define EC_R_UNDEFINED_GENERATOR                         113
1632 # define EC_R_UNDEFINED_ORDER                             128
1633 # define EC_R_UNKNOWN_GROUP                               129
1634 # define EC_R_UNKNOWN_ORDER                               114
1635 # define EC_R_UNSUPPORTED_FIELD                           131
1636 # define EC_R_WRONG_CURVE_PARAMETERS                      145
1637 # define EC_R_WRONG_ORDER                                 130
1638
1639 # ifdef  __cplusplus
1640 }
1641 # endif
1642 # endif
1643
1644 #endif