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58 lines
1.8 KiB
58 lines
1.8 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 ECIES.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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* ECIES Encrypt/Decrypt
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*/
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#include "EC.h"
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#include "ECIES.h"
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using namespace std;
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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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ECIESEncryptor::ECIESEncryptor(ECKeyPair* _k)
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{
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m_encryptor.AccessKey().AccessGroupParameters().Initialize(secp256k1());
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m_encryptor.AccessKey().SetPublicElement(_k->pub().GetPublicElement());
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}
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void ECIESEncryptor::encrypt(bytes& _message)
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{
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std::string c;
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StringSource ss(_message.data(), _message.size(), true, new PK_EncryptorFilter(PRNG(), m_encryptor, new StringSink(c)));
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bzero(_message.data(), _message.size() * sizeof(byte));
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_message = std::move(bytesConstRef(c).toBytes());
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}
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ECIESDecryptor::ECIESDecryptor(ECKeyPair* _k)
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{
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m_decryptor.AccessKey().AccessGroupParameters().Initialize(secp256k1());
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m_decryptor.AccessKey().SetPrivateExponent(_k->sec().GetPrivateExponent());
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}
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bytes ECIESDecryptor::decrypt(bytesConstRef& _c)
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{
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std::string p;
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StringSource ss(_c.data(), _c.size(), true, new PK_DecryptorFilter(PRNG(), m_decryptor, new StringSink(p)));
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return std::move(bytesConstRef(p).toBytes());
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}
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