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https://github.com/trezor/trezor-firmware.git
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43 lines
1.7 KiB
C
43 lines
1.7 KiB
C
/**
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* Copyright (c) 2019 Anatolii Kurotych
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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 __SCHNORR_H__
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#define __SCHNORR_H__
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#include "ecdsa.h"
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// result of sign operation
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typedef struct {
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bignum256 r, s;
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} schnorr_sign_pair;
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// sign/verify returns 0 if operation succeeded
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// k is a random from [1, ..., order-1]
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int schnorr_sign(const ecdsa_curve *curve, const uint8_t *priv_key,
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const bignum256 *k, const uint8_t *msg, const uint32_t msg_len,
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schnorr_sign_pair *result);
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int schnorr_verify(const ecdsa_curve *curve, const uint8_t *pub_key,
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const uint8_t *msg, const uint32_t msg_len,
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const schnorr_sign_pair *sign);
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#endif
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