5dbd3efce7
(the same keys can be used for ECC schemes other than ECDSA) and add some new options. Similarly, use string "EC PARAMETERS" instead of "ECDSA PARAMETERS" in 'PEM' format. Fix ec_asn1.c (take into account the desired conversion form). 'make update'. Submitted by: Nils Larsch
394 lines
16 KiB
C
394 lines
16 KiB
C
/* crypto/ec/ec.h */
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/* ====================================================================
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* Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#ifndef HEADER_EC_H
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#define HEADER_EC_H
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#ifdef OPENSSL_NO_EC
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#error EC is disabled.
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#endif
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#include <openssl/bn.h>
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#include <openssl/asn1.h>
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#include <openssl/symhacks.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum {
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/* values as defined in X9.62 (ECDSA) and elsewhere */
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POINT_CONVERSION_COMPRESSED = 2,
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POINT_CONVERSION_UNCOMPRESSED = 4,
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POINT_CONVERSION_HYBRID = 6
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} point_conversion_form_t;
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typedef struct ec_method_st EC_METHOD;
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typedef struct ec_group_st
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/*
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EC_METHOD *meth;
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-- field definition
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-- curve coefficients
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-- optional generator with associated information (order, cofactor)
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-- optional extra data (TODO: precomputed table for fast computation of multiples of generator)
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-- ASN1 stuff
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*/
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EC_GROUP;
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typedef struct ec_point_st EC_POINT;
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/* EC_METHODs for curves over GF(p).
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* EC_GFp_simple_method provides the basis for the optimized methods.
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*/
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const EC_METHOD *EC_GFp_simple_method(void);
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const EC_METHOD *EC_GFp_mont_method(void);
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#if 0
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const EC_METHOD *EC_GFp_recp_method(void); /* TODO */
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const EC_METHOD *EC_GFp_nist_method(void); /* TODO */
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#endif
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EC_GROUP *EC_GROUP_new(const EC_METHOD *);
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void EC_GROUP_free(EC_GROUP *);
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void EC_GROUP_clear_free(EC_GROUP *);
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int EC_GROUP_copy(EC_GROUP *, const EC_GROUP *);
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const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *);
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int EC_METHOD_get_field_type(const EC_METHOD *);
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int EC_GROUP_set_generator(EC_GROUP *, const EC_POINT *generator, const BIGNUM *order, const BIGNUM *cofactor);
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EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *);
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int EC_GROUP_get_order(const EC_GROUP *, BIGNUM *order, BN_CTX *);
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int EC_GROUP_get_cofactor(const EC_GROUP *, BIGNUM *cofactor, BN_CTX *);
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void EC_GROUP_set_nid(EC_GROUP *, int); /* curve name */
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int EC_GROUP_get_nid(const EC_GROUP *);
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void EC_GROUP_set_asn1_flag(EC_GROUP *, int flag);
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int EC_GROUP_get_asn1_flag(const EC_GROUP *);
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void EC_GROUP_set_point_conversion_form(EC_GROUP *, point_conversion_form_t);
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point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *);
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unsigned char *EC_GROUP_get0_seed(const EC_GROUP *);
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size_t EC_GROUP_get_seed_len(const EC_GROUP *);
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size_t EC_GROUP_set_seed(EC_GROUP *, const unsigned char *, size_t len);
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/* We don't have types for field specifications and field elements in general.
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* Otherwise we could declare
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* int EC_GROUP_set_curve(EC_GROUP *, .....);
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*/
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int EC_GROUP_set_curve_GFp(EC_GROUP *, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *);
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int EC_GROUP_get_curve_GFp(const EC_GROUP *, BIGNUM *p, BIGNUM *a, BIGNUM *b, BN_CTX *);
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/* EC_GROUP_check() returns 1 if 'group' defines a valid group, 0 otherwise */
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int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx);
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/* EC_GROUP_check_discriminant() returns 1 if the discriminant of the
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* elliptic curve is not zero, 0 otherwise */
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int EC_GROUP_check_discriminant(const EC_GROUP *, BN_CTX *);
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/* EC_GROUP_new_GFp() calls EC_GROUP_new() and EC_GROUP_set_GFp()
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* after choosing an appropriate EC_METHOD */
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EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *);
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/* EC_GROUP_new_by_nid() and EC_GROUP_new_by_name() also set
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* generator and order */
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EC_GROUP *EC_GROUP_new_by_nid(int nid);
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EC_GROUP *EC_GROUP_new_by_name(int name);
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/* Currently valid arguments to EC_GROUP_new_by_name() */
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#define EC_GROUP_NO_CURVE 0
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#define EC_GROUP_NIST_PRIME_192 NID_X9_62_prime192v1
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#define EC_GROUP_NIST_PRIME_224 NID_secp224r1
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#define EC_GROUP_NIST_PRIME_256 NID_X9_62_prime256v1
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#define EC_GROUP_NIST_PRIME_384 NID_secp384r1
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#define EC_GROUP_NIST_PRIME_521 NID_secp521r1
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#define EC_GROUP_X9_62_PRIME_192V1 NID_X9_62_prime192v1
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#define EC_GROUP_X9_62_PRIME_192V2 NID_X9_62_prime192v2
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#define EC_GROUP_X9_62_PRIME_192V3 NID_X9_62_prime192v3
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#define EC_GROUP_X9_62_PRIME_239V1 NID_X9_62_prime239v1
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#define EC_GROUP_X9_62_PRIME_239V2 NID_X9_62_prime239v2
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#define EC_GROUP_X9_62_PRIME_239V3 NID_X9_62_prime239v3
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#define EC_GROUP_X9_62_PRIME_256V1 NID_X9_62_prime256v1
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#define EC_GROUP_SECG_PRIME_112R1 NID_secp112r1
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#define EC_GROUP_SECG_PRIME_112R2 NID_secp112r2
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#define EC_GROUP_SECG_PRIME_128R1 NID_secp128r1
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#define EC_GROUP_SECG_PRIME_128R2 NID_secp128r2
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#define EC_GROUP_SECG_PRIME_160K1 NID_secp160k1
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#define EC_GROUP_SECG_PRIME_160R1 NID_secp160r1
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#define EC_GROUP_SECG_PRIME_160R2 NID_secp160r2
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#define EC_GROUP_SECG_PRIME_192K1 NID_secp192k1
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#define EC_GROUP_SECG_PRIME_192R1 NID_X9_62_prime192v1
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#define EC_GROUP_SECG_PRIME_224K1 NID_secp224k1
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#define EC_GROUP_SECG_PRIME_224R1 NID_secp224r1
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#define EC_GROUP_SECG_PRIME_256K1 NID_secp256k1
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#define EC_GROUP_SECG_PRIME_256R1 NID_X9_62_prime256v1
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#define EC_GROUP_SECG_PRIME_384R1 NID_secp384r1
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#define EC_GROUP_SECG_PRIME_521R1 NID_secp521r1
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#define EC_GROUP_WTLS_6 NID_wap_wsg_idm_ecid_wtls6
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#define EC_GROUP_WTLS_7 NID_secp160r1
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#define EC_GROUP_WTLS_8 NID_wap_wsg_idm_ecid_wtls8
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#define EC_GROUP_WTLS_9 NID_wap_wsg_idm_ecid_wtls9
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#define EC_GROUP_WTLS_12 NID_secp224r1
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EC_POINT *EC_POINT_new(const EC_GROUP *);
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void EC_POINT_free(EC_POINT *);
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void EC_POINT_clear_free(EC_POINT *);
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int EC_POINT_copy(EC_POINT *, const EC_POINT *);
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const EC_METHOD *EC_POINT_method_of(const EC_POINT *);
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int EC_POINT_set_to_infinity(const EC_GROUP *, EC_POINT *);
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int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *, EC_POINT *,
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const BIGNUM *x, const BIGNUM *y, const BIGNUM *z, BN_CTX *);
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int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *, const EC_POINT *,
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BIGNUM *x, BIGNUM *y, BIGNUM *z, BN_CTX *);
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int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *, EC_POINT *,
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const BIGNUM *x, const BIGNUM *y, BN_CTX *);
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int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *, const EC_POINT *,
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BIGNUM *x, BIGNUM *y, BN_CTX *);
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int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *, EC_POINT *,
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const BIGNUM *x, int y_bit, BN_CTX *);
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size_t EC_POINT_point2oct(const EC_GROUP *, const EC_POINT *, point_conversion_form_t form,
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unsigned char *buf, size_t len, BN_CTX *);
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int EC_POINT_oct2point(const EC_GROUP *, EC_POINT *,
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const unsigned char *buf, size_t len, BN_CTX *);
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/* other interfaces to point2oct/oct2point: */
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BIGNUM *EC_POINT_point2bn(const EC_GROUP *, const EC_POINT *,
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point_conversion_form_t form, BIGNUM *, BN_CTX *);
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EC_POINT *EC_POINT_bn2point(const EC_GROUP *, const BIGNUM *,
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EC_POINT *, BN_CTX *);
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char *EC_POINT_point2hex(const EC_GROUP *, const EC_POINT *,
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point_conversion_form_t form, BN_CTX *);
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EC_POINT *EC_POINT_hex2point(const EC_GROUP *, const char *,
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EC_POINT *, BN_CTX *);
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int EC_POINT_add(const EC_GROUP *, EC_POINT *r, const EC_POINT *a, const EC_POINT *b, BN_CTX *);
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int EC_POINT_dbl(const EC_GROUP *, EC_POINT *r, const EC_POINT *a, BN_CTX *);
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int EC_POINT_invert(const EC_GROUP *, EC_POINT *, BN_CTX *);
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int EC_POINT_is_at_infinity(const EC_GROUP *, const EC_POINT *);
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int EC_POINT_is_on_curve(const EC_GROUP *, const EC_POINT *, BN_CTX *);
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int EC_POINT_cmp(const EC_GROUP *, const EC_POINT *a, const EC_POINT *b, BN_CTX *);
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int EC_POINT_make_affine(const EC_GROUP *, EC_POINT *, BN_CTX *);
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int EC_POINTs_make_affine(const EC_GROUP *, size_t num, EC_POINT *[], BN_CTX *);
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int EC_POINTs_mul(const EC_GROUP *, EC_POINT *r, const BIGNUM *, size_t num, const EC_POINT *[], const BIGNUM *[], BN_CTX *);
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int EC_POINT_mul(const EC_GROUP *, EC_POINT *r, const BIGNUM *, const EC_POINT *, const BIGNUM *, BN_CTX *);
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int EC_GROUP_precompute_mult(EC_GROUP *, BN_CTX *);
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/* ASN1 stuff */
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#define OPENSSL_EC_NAMED_CURVE 0x001
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typedef struct ec_parameters_st ECPARAMETERS;
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typedef struct ecpk_parameters_st ECPKPARAMETERS;
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DECLARE_ASN1_ITEM(ECPARAMETERS)
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DECLARE_ASN1_ITEM(ECPKPARAMETERS)
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DECLARE_ASN1_ENCODE_FUNCTIONS_const(ECPARAMETERS, ECPARAMETERS)
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DECLARE_ASN1_ENCODE_FUNCTIONS_const(ECPKPARAMETERS, ECPKPARAMETERS)
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EC_GROUP *EC_ASN1_pkparameters2group(const ECPKPARAMETERS *);
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ECPKPARAMETERS *EC_ASN1_group2pkparameters(const EC_GROUP *, ECPKPARAMETERS *);
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EC_GROUP *d2i_ECParameters(EC_GROUP **, const unsigned char **in, long len);
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int i2d_ECParameters(const EC_GROUP *, unsigned char **out);
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EC_GROUP *d2i_ECPKParameters(EC_GROUP **, const unsigned char **in, long len);
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int i2d_ECPKParameters(const EC_GROUP *, unsigned char **out);
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#define d2i_ECPKParameters_bio(bp,x) (EC_GROUP *)ASN1_d2i_bio(NULL, \
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(char *(*)())d2i_ECPKParameters,(bp),(unsigned char **)(x))
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#define i2d_ECPKParameters_bio(bp,x) ASN1_i2d_bio(i2d_ECPKParameters,(bp), \
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(unsigned char *)(x))
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#define d2i_ECPKParameters_fp(fp,x) (EC_GROUP *)ASN1_d2i_fp(NULL, \
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(char *(*)())d2i_ECPKParameters,(fp),(unsigned char **)(x))
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#define i2d_ECPKParameters_fp(fp,x) ASN1_i2d_fp(i2d_ECPKParameters,(fp), \
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(unsigned char *)(x))
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#ifndef OPENSSL_NO_BIO
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int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off);
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#endif
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#ifndef OPENSSL_NO_FP_API
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int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off);
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#endif
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/* BEGIN ERROR CODES */
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/* The following lines are auto generated by the script mkerr.pl. Any changes
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* made after this point may be overwritten when the script is next run.
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*/
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void ERR_load_EC_strings(void);
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/* Error codes for the EC functions. */
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/* Function codes. */
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#define EC_F_COMPUTE_WNAF 143
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#define EC_F_D2I_ECDSAPARAMETERS 154
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#define EC_F_D2I_ECPARAMETERS 155
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#define EC_F_D2I_ECPKPARAMETERS 161
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#define EC_F_ECPKPARAMETERS_PRINT 166
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#define EC_F_ECPKPARAMETERS_PRINT_FP 167
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#define EC_F_EC_ASN1_GROUP2CURVE 159
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#define EC_F_EC_ASN1_GROUP2FIELDID 156
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#define EC_F_EC_ASN1_GROUP2PARAMETERS 160
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#define EC_F_EC_ASN1_GROUP2PKPARAMETERS 162
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#define EC_F_EC_ASN1_PARAMETERS2GROUP 157
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#define EC_F_EC_ASN1_PKPARAMETERS2GROUP 163
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#define EC_F_EC_GFP_MONT_FIELD_DECODE 133
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#define EC_F_EC_GFP_MONT_FIELD_ENCODE 134
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#define EC_F_EC_GFP_MONT_FIELD_MUL 131
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#define EC_F_EC_GFP_MONT_FIELD_SQR 132
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#define EC_F_EC_GFP_SIMPLE_GROUP_CHECK_DISCRIMINANT 152
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#define EC_F_EC_GFP_SIMPLE_GROUP_SET_CURVE_GFP 100
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#define EC_F_EC_GFP_SIMPLE_GROUP_SET_GENERATOR 101
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#define EC_F_EC_GFP_SIMPLE_MAKE_AFFINE 102
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#define EC_F_EC_GFP_SIMPLE_OCT2POINT 103
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#define EC_F_EC_GFP_SIMPLE_POINT2OCT 104
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#define EC_F_EC_GFP_SIMPLE_POINTS_MAKE_AFFINE 137
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#define EC_F_EC_GFP_SIMPLE_POINT_GET_AFFINE_COORDINATES_GFP 105
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#define EC_F_EC_GFP_SIMPLE_POINT_SET_AFFINE_COORDINATES_GFP 128
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#define EC_F_EC_GFP_SIMPLE_SET_COMPRESSED_COORDINATES_GFP 129
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#define EC_F_EC_GROUP_CHECK 150
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#define EC_F_EC_GROUP_CHECK_DISCRIMINANT 153
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#define EC_F_EC_GROUP_COPY 106
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#define EC_F_EC_GROUP_GET0_GENERATOR 139
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#define EC_F_EC_GROUP_GET_COFACTOR 140
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#define EC_F_EC_GROUP_GET_CURVE_GFP 130
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#define EC_F_EC_GROUP_GET_EXTRA_DATA 107
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#define EC_F_EC_GROUP_GET_ORDER 141
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#define EC_F_EC_GROUP_GROUP2NID 147
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#define EC_F_EC_GROUP_NEW 108
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#define EC_F_EC_GROUP_NEW_BY_NAME 144
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#define EC_F_EC_GROUP_NEW_BY_NID 146
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#define EC_F_EC_GROUP_NEW_GFP_FROM_HEX 148
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#define EC_F_EC_GROUP_PRECOMPUTE_MULT 142
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#define EC_F_EC_GROUP_SET_CURVE_GFP 109
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#define EC_F_EC_GROUP_SET_EXTRA_DATA 110
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#define EC_F_EC_GROUP_SET_GENERATOR 111
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#define EC_F_EC_POINTS_MAKE_AFFINE 136
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#define EC_F_EC_POINTS_MUL 138
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#define EC_F_EC_POINT_ADD 112
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#define EC_F_EC_POINT_CMP 113
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#define EC_F_EC_POINT_COPY 114
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#define EC_F_EC_POINT_DBL 115
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#define EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP 116
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#define EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP 117
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#define EC_F_EC_POINT_IS_AT_INFINITY 118
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#define EC_F_EC_POINT_IS_ON_CURVE 119
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#define EC_F_EC_POINT_MAKE_AFFINE 120
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#define EC_F_EC_POINT_NEW 121
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#define EC_F_EC_POINT_OCT2POINT 122
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#define EC_F_EC_POINT_POINT2OCT 123
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#define EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP 124
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#define EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP 125
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#define EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP 126
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#define EC_F_EC_POINT_SET_TO_INFINITY 127
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#define EC_F_GFP_MONT_GROUP_SET_CURVE_GFP 135
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#define EC_F_I2D_ECDSAPARAMETERS 158
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#define EC_F_I2D_ECPARAMETERS 164
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#define EC_F_I2D_ECPKPARAMETERS 165
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/* Reason codes. */
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#define EC_R_ASN1_ERROR 130
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#define EC_R_ASN1_UNKNOWN_FIELD 131
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#define EC_R_BUFFER_TOO_SMALL 100
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#define EC_R_D2I_ECPARAMETERS_FAILURE 132
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#define EC_R_D2I_ECPKPARAMETERS_FAILURE 133
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#define EC_R_D2I_EC_PARAMETERS_FAILURE 123
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#define EC_R_DISCRIMINANT_IS_ZERO 118
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#define EC_R_EC_GROUP_NEW_BY_NAME_FAILURE 124
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#define EC_R_GROUP2PARAMETERS_FAILURE 125
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#define EC_R_GROUP2PKPARAMETERS_FAILURE 134
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#define EC_R_I2D_ECPKPARAMETERS_FAILURE 135
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#define EC_R_I2D_EC_PARAMETERS_FAILURE 126
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#define EC_R_INCOMPATIBLE_OBJECTS 101
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#define EC_R_INVALID_ARGUMENT 112
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#define EC_R_INVALID_COMPRESSED_POINT 110
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#define EC_R_INVALID_COMPRESSION_BIT 109
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#define EC_R_INVALID_ENCODING 102
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#define EC_R_INVALID_FIELD 103
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#define EC_R_INVALID_FORM 104
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#define EC_R_INVALID_GROUP_ORDER 119
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#define EC_R_MISSING_PARAMETERS 127
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#define EC_R_NOT_IMPLEMENTED 136
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#define EC_R_NOT_INITIALIZED 111
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#define EC_R_NO_SUCH_EXTRA_DATA 105
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#define EC_R_PARAMETERS2GROUP_FAILURE 128
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#define EC_R_PKPARAMETERS2GROUP_FAILURE 137
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#define EC_R_POINT_AT_INFINITY 106
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#define EC_R_POINT_IS_NOT_ON_CURVE 107
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#define EC_R_SLOT_FULL 108
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#define EC_R_UNDEFINED_GENERATOR 113
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#define EC_R_UNDEFINED_ORDER 122
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#define EC_R_UNKNOWN_GROUP 116
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#define EC_R_UNKNOWN_NID 117
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#define EC_R_UNKNOWN_ORDER 114
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#define EC_R_UNKNOWN_PARAMETERS_TYPE 129
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#ifdef __cplusplus
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}
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#endif
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#endif
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