solidity/libsolutil/IpfsHash.h

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/*
This file is part of solidity.
solidity is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
solidity is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with solidity. If not, see <http://www.gnu.org/licenses/>.
*/
// SPDX-License-Identifier: GPL-3.0
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#pragma once
#include <libsolutil/Common.h>
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#include <string>
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namespace solidity::util
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{
/// Compute the "ipfs hash" of a file with the content @a _data.
/// The output will be the multihash of the UnixFS protobuf encoded data.
/// As hash function it will use sha2-256.
/// The effect is that the hash should be identical to the one produced by
/// the command `ipfs add <filename>`.
bytes ipfsHash(std::string _data);
/// Compute the "ipfs hash" as above, but encoded in base58 as used by ipfs / bitcoin.
std::string ipfsHashBase58(std::string _data);
}