cic-contracts/solidity/MultiHash.sol

pragma solidity >=0.6.12;

// Author:	Louis Holbrook <dev@holbrook.no> 0826EDA1702D1E87C6E2875121D2E7BB88C2A746
// SPDX-License-Identifier:	AGPL-3.0-or-later
// File-version: 2

interface IMultiHash {
	// Represents a multicodec item.
	struct MultiHash {
		uint8 l;
		uint8 codecRLength;
		uint8 prefixRLength;
		bytes16 prefix;
		bytes8 codec;
	}

	// All registered multicodecs
	function digestCodec(uint256 _codec) external view returns(MultiHash memory);

	function haveDigestEncoding(uint256 _codec) external view returns(bool);

	// Generate a multihash from the given digest and current selected multicodec
	function encodeDigest(uint256 _codec, bytes memory _digest) external view returns(bytes memory);
}