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45 lines
1.5 KiB
45 lines
1.5 KiB
/*
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This file is part of cpp-ethereum.
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cpp-ethereum 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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cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file CryptoPP.cpp
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* @author Alex Leverington <nessence@gmail.com>
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* @date 2014
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*/
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#include "CryptoPP.h"
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using namespace dev;
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using namespace dev::crypto;
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using namespace CryptoPP;
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/// Integer and Point Conversion:
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void pp::exportPublicKey(CryptoPP::DL_PublicKey_EC<CryptoPP::ECP> const& _k, Public& _p)
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{
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bytes prefixedKey(_k.GetGroupParameters().GetEncodedElementSize(true));
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secp256k1Params.GetCurve().EncodePoint(prefixedKey.data(), _k.GetPublicElement(), false);
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assert(Public::size + 1 == _k.GetGroupParameters().GetEncodedElementSize(true));
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memcpy(_p.data(), &prefixedKey[1], Public::size);
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}
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void pp::exponentToPublic(Integer const& _e, Public& _p)
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{
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CryptoPP::DL_PublicKey_EC<CryptoPP::ECP> pk;
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pk.Initialize(secp256k1Params, secp256k1Params.ExponentiateBase(_e));
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pp::exportPublicKey(pk, _p);
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}
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