86 lines
3.3 KiB
C
86 lines
3.3 KiB
C
/* ecc.h */
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/*
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This file is part of the AVR-Crypto-Lib.
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Copyright (C) 2012 Daniel Otte (daniel.otte@rub.de)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program 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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ECC_H_
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#define ECC_H_
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#include <stddef.h>
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typedef struct {
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bigint_t x;
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bigint_t y;
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bigint_t z1;
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bigint_t z2;
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bigint_t z3;
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} ecc_chudnovsky_point_t;
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typedef struct {
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bigint_t x;
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bigint_t y;
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} ecc_affine_point_t;
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typedef union __attribute__((packed)){
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ecc_affine_point_t affine;
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ecc_chudnovsky_point_t chudnovsky;
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} ecc_combi_point_t;
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typedef struct {
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bigint_t *p;
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bigint_t *b;
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int (*reduce_p)(bigint_t*);
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} ecc_curve_sp_t;
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uint8_t ecc_chudnovsky_point_alloc(ecc_chudnovsky_point_t *p, size_t length_B);
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void ecc_chudnovsky_point_free(ecc_chudnovsky_point_t *p);
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void ecc_chudnovsky_point_print(const ecc_chudnovsky_point_t *p);
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uint8_t ecc_affine_to_chudnovsky_point(ecc_chudnovsky_point_t *dest,
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const ecc_affine_point_t *src);
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uint8_t ecc_chudnovsky_to_affine_point(ecc_affine_point_t *dest,
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const ecc_chudnovsky_point_t *src,
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const ecc_curve_sp_t *curve);
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uint8_t ecc_chudnovsky_point_double_sp(ecc_chudnovsky_point_t *dest,
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const ecc_chudnovsky_point_t *a,
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const ecc_curve_sp_t *curve);
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void ecc_chudnovsky_point_copy(ecc_chudnovsky_point_t *dest,
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const ecc_chudnovsky_point_t *src);
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uint8_t ecc_chudnovsky_point_add_sp(ecc_chudnovsky_point_t *dest,
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const ecc_chudnovsky_point_t *a,
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const ecc_chudnovsky_point_t *b,
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const ecc_curve_sp_t *curve);
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uint8_t ecc_chudnovsky_double_and_add(ecc_chudnovsky_point_t *dest,
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const bigint_t *k,
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const ecc_chudnovsky_point_t *p,
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const ecc_curve_sp_t *curve);
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uint8_t bigint_to_naf(uint8_t *dest, uint16_t *length, const bigint_t *src);
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uint8_t ecc_chudnovsky_naf_multiplication(ecc_chudnovsky_point_t *dest,
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const bigint_t *k,
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const ecc_chudnovsky_point_t *p,
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const ecc_curve_sp_t *curve);
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uint8_t ecc_chudnovsky_multiplication(ecc_chudnovsky_point_t *dest,
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const bigint_t *k,
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const ecc_chudnovsky_point_t *p,
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const ecc_curve_sp_t *curve);
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#endif /* ECC_H_ */
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