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https://github.com/trezor/trezor-firmware.git
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60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/**
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* Copyright (c) 2013 Tomas Dzetkulic
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* Copyright (c) 2013 Pavol Rusnak
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES
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* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __SECP256K1_H__
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#define __SECP256K1_H__
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#include <stdint.h>
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#include "bignum.h"
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// curve point x and y
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typedef struct {
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bignum256 x, y;
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} curve_point;
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// secp256k1 prime
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extern const bignum256 prime256k1;
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// secp256k1 initial curve point
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extern const curve_point G256k1;
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// secp256k1 order of G
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extern const bignum256 order256k1;
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// secp256k1 order of G / 2
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extern const bignum256 order256k1_half;
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// 3/2 in G_p
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extern const bignum256 three_over_two256k1;
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#if USE_PRECOMPUTED_IV
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extern const bignum256 secp256k1_iv[256];
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#endif
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#if USE_PRECOMPUTED_CP
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extern const curve_point secp256k1_cp[256];
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#endif
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#endif
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