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70 lines
3.2 KiB
70 lines
3.2 KiB
// Copyright (c) 2017-2022, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#pragma once
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#include "crypto/crypto.h"
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#include "cryptonote_basic/cryptonote_format_utils.h"
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#include "ringct/rctTypes.h"
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#include <unordered_map>
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#include <unordered_set>
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#include <vector>
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namespace cryptonote { struct account_keys; }
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namespace multisig
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{
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/**
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* @brief get_multisig_blinded_secret_key - converts an input private key into a blinded multisig private key
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* Use 1a: converts account private spend key into multisig private key, which is used for key exchange and message signing
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* Use 1b: converts account private view key into ancillary private key share, for the composite multisig private view key
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* Use 2: converts DH shared secrets (curve points) into private keys, which are intermediate private keys in multisig key exchange
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* @param key - private key to transform
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* @return transformed private key
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*/
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crypto::secret_key get_multisig_blinded_secret_key(const crypto::secret_key &key);
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bool generate_multisig_key_image(const cryptonote::account_keys &keys,
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std::size_t multisig_key_index,
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const crypto::public_key& out_key,
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crypto::key_image& ki);
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void generate_multisig_LR(const crypto::public_key pkey,
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const crypto::secret_key &k,
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crypto::public_key &L,
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crypto::public_key &R);
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bool generate_multisig_composite_key_image(const cryptonote::account_keys &keys,
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const std::unordered_map<crypto::public_key, cryptonote::subaddress_index> &subaddresses,
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const crypto::public_key &out_key,
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const crypto::public_key &tx_public_key,
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const std::vector<crypto::public_key> &additional_tx_public_keys,
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std::size_t real_output_index,
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const std::vector<crypto::key_image> &pkis,
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crypto::key_image &ki);
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} //namespace multisig
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