84 lines
1.9 KiB
C
84 lines
1.9 KiB
C
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/*
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*
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* Copyright (C) 1998-2011, OFFIS e.V.
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* All rights reserved. See COPYRIGHT file for details.
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*
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* This software and supporting documentation were developed by
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*
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* OFFIS e.V.
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* R&D Division Health
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* Escherweg 2
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* D-26121 Oldenburg, Germany
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*
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*
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* Module: dcmsign
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*
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* Author: Norbert Loxen, Marco Eichelberg
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*
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* Purpose:
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* classes: SiMAC
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*
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*/
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#ifndef SIMAC_H
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#define SIMAC_H
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#include "dcmtk/config/osconfig.h"
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#include "dcmtk/dcmsign/sitypes.h"
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#ifdef WITH_OPENSSL
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/**
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* a base class for all classes that implement hash functions.
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*/
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class DCMTK_DCMSIGN_EXPORT SiMAC
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{
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public:
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/// default constructor
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SiMAC() { }
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/// destructor
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virtual ~SiMAC() { }
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/** initializes the MAC algorithm.
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* @return status code
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*/
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virtual OFCondition initialize() = 0;
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/** feeds data into the MAC algorithm
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* @param data pointer to raw data to be fed into the MAC, must not be NULL
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* @param length number of bytes in raw data array
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* @return status code
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*/
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virtual OFCondition digest(const unsigned char *data, unsigned long length) = 0;
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/** finalizes the MAC and writes it to the given output array,
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* which must be at least getSize() bytes large.
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* After a call to finalize, the MAC algorithm must be initialized
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* again, see initialize().
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* @param result pointer to array of getSize() bytes into which the MAC is written
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* @return status code
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*/
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virtual OFCondition finalize(unsigned char *result) = 0;
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/** returns the size of a MAC in bytes.
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* @return block size for this MAC algorithm
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*/
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virtual unsigned long getSize() const = 0;
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/** returns the type of MAC algorithm computed by this object
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* @return type of MAC algorithm
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*/
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virtual E_MACType macType() const = 0;
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/** returns the DICOM identifier for this MAC algorithm
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* @return DICOM defined term for algorithm
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*/
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virtual const char *getDefinedTerm() const = 0;
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};
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#endif
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#endif
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