c++/security/Signature.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_SIGNATURE_H
00024 #define _CLASS_SIGNATURE_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/SignatureSpi.h"
00033 using beecrypt::security::SignatureSpi;
00034 #include "beecrypt/c++/security/NoSuchAlgorithmException.h"
00035 using beecrypt::security::NoSuchAlgorithmException;
00036 #include "beecrypt/c++/security/NoSuchProviderException.h"
00037 using beecrypt::security::NoSuchProviderException;
00038 
00039 namespace beecrypt {
00040     namespace security {
00043         class BEECRYPTCXXAPI Signature : public beecrypt::lang::Object
00044         {
00045         protected:
00046             static const int UNINITIALIZED = 0;
00047             static const int VERIFY = 1;
00048             static const int SIGN = 2;
00049 
00050         public:
00060             static Signature* getInstance(const String& algorithm) throw (NoSuchAlgorithmException);
00068             static Signature* getInstance(const String& algorithm, const String& provider) throw (NoSuchAlgorithmException, NoSuchProviderException);
00069             static Signature* getInstance(const String& algorithm, const Provider& provider) throw (NoSuchAlgorithmException);
00070 
00071         protected:
00072             int state;
00073 
00074         private:
00075             SignatureSpi*   _sspi;
00076             const Provider* _prov;
00077             String          _algo;
00078 
00079         protected:
00080             Signature(SignatureSpi* spi, const Provider* provider, const String& algorithm);
00081 
00082         public:
00083             virtual ~Signature();
00084 
00085             AlgorithmParameters* getParameters() const;
00086             void setParameter(const AlgorithmParameterSpec&) throw (InvalidAlgorithmParameterException);
00087 
00088             void initSign(const PrivateKey&) throw (InvalidKeyException);
00089             void initSign(const PrivateKey&, SecureRandom*) throw (InvalidKeyException);
00090 
00091             void initVerify(const PublicKey&) throw (InvalidKeyException);
00092 
00093             bytearray* sign() throw (IllegalStateException, SignatureException);
00094             size_t sign(byte*, size_t, size_t) throw (ShortBufferException, IllegalStateException, SignatureException);
00095             size_t sign(bytearray&) throw (IllegalStateException, SignatureException);
00096             bool verify(const bytearray&) throw (IllegalStateException, SignatureException);
00097             bool verify(const byte*, size_t, size_t) throw (IllegalStateException, SignatureException);
00098 
00099             void update(byte) throw (IllegalStateException);
00100             void update(const byte*, size_t, size_t) throw (IllegalStateException);
00101             void update(const bytearray&) throw (IllegalStateException);
00102 
00103             const String& getAlgorithm() const throw ();
00104             const Provider& getProvider() const throw ();
00105         };
00106     }
00107 }
00108 
00109 #endif
00110 
00111 #endif

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