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MessageDigest.h

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00001 /*
00002  * Copyright (c) 2004 Beeyond Software Holding BV
00003  *
00004  * This library is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU Lesser General Public
00006  * License as published by the Free Software Foundation; either
00007  * version 2.1 of the License, or (at your option) any later version.
00008  *
00009  * This library is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * Lesser General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU Lesser General Public
00015  * License along with this library; if not, write to the Free Software
00016  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00017  */
00018 
00023 #ifndef _CLASS_MESSAGEDIGEST_H
00024 #define _CLASS_MESSAGEDIGEST_H
00025 
00026 #include "beecrypt/api.h"
00027 
00028 #ifdef __cplusplus
00029 
00030 #include "beecrypt/c++/lang/Object.h"
00031 using beecrypt::lang::Object;
00032 #include "beecrypt/c++/security/MessageDigestSpi.h"
00033 using beecrypt::security::MessageDigestSpi;
00034 #include "beecrypt/c++/security/Provider.h"
00035 using beecrypt::security::Provider;
00036 #include "beecrypt/c++/security/NoSuchAlgorithmException.h"
00037 using beecrypt::security::NoSuchAlgorithmException;
00038 #include "beecrypt/c++/security/NoSuchProviderException.h"
00039 using beecrypt::security::NoSuchProviderException;
00040 
00041 namespace beecrypt {
00042     namespace security {
00045         class BEECRYPTCXXAPI MessageDigest : public beecrypt::lang::Object
00046         {
00047         public:
00048             static MessageDigest* getInstance(const String& algorithm) throw (NoSuchAlgorithmException);
00049             static MessageDigest* getInstance(const String& algorithm, const String& provider) throw (NoSuchAlgorithmException, NoSuchProviderException);
00050             static MessageDigest* getInstance(const String& algorithm, const Provider& provider) throw (NoSuchAlgorithmException);
00051 
00052         private:
00053             MessageDigestSpi* _mspi;
00054             const Provider*   _prov;
00055             String            _algo;
00056 
00057         protected:
00058             MessageDigest(MessageDigestSpi* spi, const Provider* provider, const String& algorithm);
00059 
00060         public:
00061             virtual ~MessageDigest();
00062 
00063             virtual MessageDigest* clone() const throw (CloneNotSupportedException);
00064 
00065             const bytearray& digest();
00066             const bytearray& digest(const bytearray& b);
00067             size_t digest(byte* data, size_t offset, size_t length) throw (ShortBufferException);
00068             size_t getDigestLength();
00069             void reset();
00070             void update(byte b);
00071             void update(const byte* data, size_t offset, size_t length);
00072             void update(const bytearray& b);
00073 
00074             const String& getAlgorithm() const throw ();
00075             const Provider& getProvider() const throw ();
00076         };
00077     }
00078 }
00079 
00080 #endif
00081 
00082 #endif

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