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WinCAPICryptoHashHMAC.hpp

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00001 /*
00002  * Copyright 2002-2005 The Apache Software Foundation.
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00017 /*
00018  * XSEC
00019  *
00020  * WinCAPICryptoHashHMAC := Windows CAPI Implementation of HMAC
00021  *
00022  * Author(s): Berin Lautenbach
00023  *
00024  * $Id: WinCAPICryptoHashHMAC.hpp,v 1.8 2005/06/04 11:30:26 blautenb Exp $
00025  *
00026  */
00027 
00028 #ifndef WINCAPICRYPTOHASHHMAC_INCLUDE
00029 #define WINCAPICRYPTOHASHHMAC_INCLUDE
00030 
00031 #include <xsec/framework/XSECDefs.hpp>
00032 #include <xsec/enc/XSECCryptoHash.hpp>
00033 
00034 #if !defined(_WIN32_WINNT)
00035 #   define _WIN32_WINNT 0x0400
00036 #endif
00037 
00038 #include <wincrypt.h>
00039 
00040 class WinCAPICryptoProvider;
00041 
00065 class DSIG_EXPORT WinCAPICryptoHashHMAC : public XSECCryptoHash {
00066 
00067 
00068 public :
00069 
00072 
00085     WinCAPICryptoHashHMAC(HCRYPTPROV prov, XSECCryptoHash::HashType alg);
00086     virtual ~WinCAPICryptoHashHMAC();
00087 
00089 
00092     
00102     virtual void        setKey(XSECCryptoKey * key);
00103 
00105 
00108 
00115     virtual void        reset(void);
00116 
00128     virtual void        hash(unsigned char * data, 
00129                              unsigned int length);
00130 
00144     virtual unsigned int finish(unsigned char * hash,
00145                                 unsigned int maxLength);
00146 
00148 
00151 
00160     virtual HashType getHashType(void);
00161 
00163 
00164 private:
00165 
00166     // Not implemented constructors
00167     WinCAPICryptoHashHMAC();
00168 
00169     unsigned char               m_mdValue[XSEC_MAX_HASH_SIZE];      // Final output
00170     unsigned int                m_mdLen;
00171 
00172     ALG_ID                      m_algId;
00173     XSECCryptoHash::HashType    m_hashType;
00174 
00175     HCRYPTPROV                  m_p;
00176     HCRYPTHASH                  m_h;
00177 
00178     unsigned char               m_ipadKeyed[XSEC_MAX_HASH_SIZE];
00179     unsigned char               m_opadKeyed[XSEC_MAX_HASH_SIZE];
00180 
00181     unsigned int                m_blockSize;        // Block size (bytes) for used alg.
00182 
00183     // Internal functions
00184     void eraseKeys();
00185 
00186 };
00187 
00188 #endif /* WINCAPICRYPTOHASHHMAC_INCLUDE */

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