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// //////////////////////////////////////////////////////////
// hash.h
// Copyright (c) 2014,2015 Stephan Brumme. All rights reserved.
// see http://create.stephan-brumme.com/disclaimer.html
//
#pragma once
#include <string>
/// abstract base class
class Hash
{
public:
/// compute hash of a memory block
virtual std::string operator()(const void* data, size_t numBytes) = 0;
/// compute hash of a string, excluding final zero
virtual std::string operator()(const std::string& text) = 0;
/// add arbitrary number of bytes
virtual void add(const void* data, size_t numBytes) = 0;
/// return latest hash as hex characters
virtual std::string getHash() = 0;
/// restart
virtual void reset() = 0;
};
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