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/*
* Hash Function Base Class
* (C) 1999-2008 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_HASH_FUNCTION_BASE_CLASS_H__
#define BOTAN_HASH_FUNCTION_BASE_CLASS_H__
#include <botan/buf_comp.h>
#include <string>
namespace Botan {
/**
* This class represents hash function (message digest) objects
*/
class BOTAN_DLL HashFunction : public Buffered_Computation
{
public:
/**
* @return new object representing the same algorithm as *this
*/
virtual HashFunction* clone() const = 0;
virtual void clear() = 0;
virtual std::string name() const = 0;
/**
* @return hash block size as defined for this algorithm
*/
virtual size_t hash_block_size() const { return 0; }
};
}
#endif
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