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54 lines
1.7 KiB
54 lines
1.7 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 UDP.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 "UDP.h"
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using namespace dev;
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using namespace dev::p2p;
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h256 RLPXDatagramFace::sign(Secret const& _k)
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{
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RLPStream rlpstream;
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streamRLP(rlpstream);
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bytes rlpBytes(rlpstream.out());
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bytesConstRef rlp(&rlpBytes);
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h256 hash(dev::sha3(rlp));
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Signature sig = dev::sign(_k, hash);
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data.resize(h256::size + Signature::size + rlp.size());
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bytesConstRef packetHash(&data[0], h256::size);
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bytesConstRef signedPayload(&data[h256::size], Signature::size + rlp.size());
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bytesConstRef payloadSig(&data[h256::size], Signature::size);
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bytesConstRef payload(&data[h256::size + Signature::size], rlp.size());
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sig.ref().copyTo(payloadSig);
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rlp.copyTo(payload);
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dev::sha3(signedPayload).ref().copyTo(packetHash);
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return std::move(hash);
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};
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Public RLPXDatagramFace::authenticate(bytesConstRef _sig, bytesConstRef _rlp)
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{
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Signature const& sig = *(Signature const*)_sig.data();
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return std::move(dev::recover(sig, sha3(_rlp)));
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};
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