3312af6e07
We currently use an old version of libgcrypt which results in us having fewer ciphers and missing on many other improvements. Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
144 lines
6.2 KiB
C
144 lines
6.2 KiB
C
/* ecc-common.h - Declarations of common ECC code
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* Copyright (C) 2013 g10 Code GmbH
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*
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* This file is part of Libgcrypt.
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*
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* Libgcrypt is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* Libgcrypt is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GCRY_ECC_COMMON_H
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#define GCRY_ECC_COMMON_H
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/* Definition of a curve. */
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typedef struct
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{
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enum gcry_mpi_ec_models model;/* The model descrinbing this curve. */
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enum ecc_dialects dialect; /* The dialect used with the curve. */
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gcry_mpi_t p; /* Prime specifying the field GF(p). */
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gcry_mpi_t a; /* First coefficient of the Weierstrass equation. */
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gcry_mpi_t b; /* Second coefficient of the Weierstrass equation.
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or d as used by Twisted Edwards curves. */
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mpi_point_struct G; /* Base point (generator). */
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gcry_mpi_t n; /* Order of G. */
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unsigned int h; /* Cofactor. */
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const char *name; /* Name of the curve or NULL. */
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} elliptic_curve_t;
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/* Set the value from S into D. */
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static inline void
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point_set (mpi_point_t d, mpi_point_t s)
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{
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mpi_set (d->x, s->x);
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mpi_set (d->y, s->y);
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mpi_set (d->z, s->z);
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}
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#define point_init(a) _gcry_mpi_point_init ((a))
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#define point_free(a) _gcry_mpi_point_free_parts ((a))
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/*-- ecc-curves.c --*/
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gpg_err_code_t _gcry_ecc_fill_in_curve (unsigned int nbits,
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const char *name,
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elliptic_curve_t *curve,
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unsigned int *r_nbits);
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gpg_err_code_t _gcry_ecc_update_curve_param (const char *name,
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enum gcry_mpi_ec_models *model,
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enum ecc_dialects *dialect,
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gcry_mpi_t *p, gcry_mpi_t *a,
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gcry_mpi_t *b, gcry_mpi_t *g,
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gcry_mpi_t *n);
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const char *_gcry_ecc_get_curve (gcry_sexp_t keyparms,
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int iterator,
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unsigned int *r_nbits);
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gcry_sexp_t _gcry_ecc_get_param_sexp (const char *name);
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/*-- ecc-misc.c --*/
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void _gcry_ecc_curve_free (elliptic_curve_t *E);
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elliptic_curve_t _gcry_ecc_curve_copy (elliptic_curve_t E);
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const char *_gcry_ecc_model2str (enum gcry_mpi_ec_models model);
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const char *_gcry_ecc_dialect2str (enum ecc_dialects dialect);
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unsigned char *_gcry_ecc_ec2os_buf (gcry_mpi_t x, gcry_mpi_t y, gcry_mpi_t p,
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unsigned int *r_length);
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gcry_mpi_t _gcry_ecc_ec2os (gcry_mpi_t x, gcry_mpi_t y, gcry_mpi_t p);
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mpi_point_t _gcry_ecc_compute_public (mpi_point_t Q, mpi_ec_t ec);
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gpg_err_code_t _gcry_ecc_mont_encodepoint (gcry_mpi_t x, unsigned int nbits,
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int with_prefix,
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unsigned char **r_buffer,
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unsigned int *r_buflen);
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/*-- ecc.c --*/
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/*-- ecc-ecdsa.c --*/
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gpg_err_code_t _gcry_ecc_ecdsa_sign (gcry_mpi_t input, gcry_mpi_t k, mpi_ec_t ec,
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gcry_mpi_t r, gcry_mpi_t s,
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int flags, int hashalgo);
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gpg_err_code_t _gcry_ecc_ecdsa_verify (gcry_mpi_t input, mpi_ec_t ec,
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gcry_mpi_t r, gcry_mpi_t s,
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int flags, int hashalgo);
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/*-- ecc-eddsa.c --*/
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gpg_err_code_t _gcry_ecc_eddsa_recover_x (gcry_mpi_t x, gcry_mpi_t y, int sign,
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mpi_ec_t ec);
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gpg_err_code_t _gcry_ecc_eddsa_encodepoint (mpi_point_t point, mpi_ec_t ctx,
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gcry_mpi_t x, gcry_mpi_t y,
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int with_prefix,
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unsigned char **r_buffer,
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unsigned int *r_buflen);
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gpg_err_code_t _gcry_ecc_eddsa_ensure_compact (gcry_mpi_t value,
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unsigned int nbits);
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gpg_err_code_t _gcry_ecc_eddsa_compute_h_d (unsigned char **r_digest,
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mpi_ec_t ec);
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gpg_err_code_t _gcry_ecc_eddsa_genkey (mpi_ec_t ec, int flags);
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gpg_err_code_t _gcry_ecc_eddsa_sign (gcry_mpi_t input,
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mpi_ec_t ec,
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gcry_mpi_t r_r, gcry_mpi_t s,
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struct pk_encoding_ctx *ctx);
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gpg_err_code_t _gcry_ecc_eddsa_verify (gcry_mpi_t input,
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mpi_ec_t ec,
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gcry_mpi_t r, gcry_mpi_t s,
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struct pk_encoding_ctx *ctx);
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void reverse_buffer (unsigned char *buffer, unsigned int length);
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/*-- ecc-gost.c --*/
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gpg_err_code_t _gcry_ecc_gost_sign (gcry_mpi_t input, mpi_ec_t ec,
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gcry_mpi_t r, gcry_mpi_t s);
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gpg_err_code_t _gcry_ecc_gost_verify (gcry_mpi_t input, mpi_ec_t ec,
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gcry_mpi_t r, gcry_mpi_t s);
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/*-- ecc-sm2.c --*/
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gpg_err_code_t _gcry_ecc_sm2_encrypt (gcry_sexp_t *r_ciph,
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gcry_mpi_t input, mpi_ec_t ec);
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gpg_err_code_t _gcry_ecc_sm2_decrypt (gcry_sexp_t *r_plain,
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gcry_sexp_t data_list, mpi_ec_t ec);
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gpg_err_code_t _gcry_ecc_sm2_sign (gcry_mpi_t input, mpi_ec_t ec,
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gcry_mpi_t r, gcry_mpi_t s,
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int flags, int hashalgo);
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gpg_err_code_t _gcry_ecc_sm2_verify (gcry_mpi_t input, mpi_ec_t ec,
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gcry_mpi_t r, gcry_mpi_t s);
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#endif /*GCRY_ECC_COMMON_H*/
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