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60 lines
2.3 KiB
60 lines
2.3 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 SHA3.h
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* @author Gav Wood <i@gavwood.com>
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* @date 2014
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*
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* The FixedHash fixed-size "hash" container type.
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*/
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#pragma once
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#include <string>
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#include <libdevcore/FixedHash.h>
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#include <libdevcore/vector_ref.h>
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namespace dev
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{
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// SHA-3 convenience routines.
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/// Calculate SHA3-256 hash of the given input, returning as a 256-bit hash.
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h256 sha3(bytesConstRef _input);
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/// Calculate SHA3-256 hash of the given input and load it into the given output.
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inline void sha3(bytesConstRef _input, bytesRef _output) { sha3(_input).ref().populate(_output); }
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/// Calculate SHA3-256 hash of the given input, returning as a 256-bit hash.
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inline h256 sha3(bytes const& _input) { return sha3(bytesConstRef(&_input)); }
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/// Calculate SHA3-256 hash of the given input (presented as a binary-filled string), returning as a 256-bit hash.
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inline h256 sha3(std::string const& _input) { return sha3(bytesConstRef(_input)); }
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/// Calculate SHA3-256 hash of the given input (presented as a FixedHash), returns a 256-bit hash.
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template<unsigned N> inline h256 sha3(FixedHash<N> const& _input) { return sha3(_input.ref()); }
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/// Calculate SHA3-256 hash of the given input, possibly interpreting it as nibbles, and return the hash as a string filled with binary data.
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inline std::string sha3(std::string const& _input, bool _isNibbles) { return asString((_isNibbles ? sha3(fromHex(_input)) : sha3(bytesConstRef(&_input))).asBytes()); }
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/// Calculate SHA3-256 MAC
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inline void sha3mac(bytesConstRef _secret, bytesConstRef _plain, bytesRef _output) { sha3(_secret.toBytes() + _plain.toBytes()).ref().populate(_output); }
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extern h256 EmptySHA3;
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extern h256 EmptyListSHA3;
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}
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