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WinCAPICryptoHashHMAC.hpp

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00001 /*
00002  * The Apache Software License, Version 1.1
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00004  *
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00007  *
00008  * Redistribution and use in source and binary forms, with or without
00009  * modification, are permitted provided that the following conditions
00010  * are met:
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00013  *    notice, this list of conditions and the following disclaimer. 
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00019  *
00020  * 3. The end-user documentation included with the redistribution,
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00024  *    Alternately, this acknowledgment may appear in the software itself,
00025  *    if and wherever such third-party acknowledgments normally appear.
00026  *
00027  * 4. The names "<WebSig>" and "Apache Software Foundation" must
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00032  * 5. Products derived from this software may not be called "Apache",
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00059 
00060 /*
00061  * XSEC
00062  *
00063  * WinCAPICryptoHashHMAC := Windows CAPI Implementation of HMAC
00064  *
00065  * Author(s): Berin Lautenbach
00066  *
00067  * $Id: WinCAPICryptoHashHMAC.hpp,v 1.1 2003/04/07 12:13:35 blautenb Exp $
00068  *
00069  */
00070 
00071 #ifndef WINCAPICRYPTOHASHHMAC_INCLUDE
00072 #define WINCAPICRYPTOHASHHMAC_INCLUDE
00073 
00074 #include <xsec/framework/XSECDefs.hpp>
00075 #include <xsec/enc/XSECCryptoHash.hpp>
00076 
00077 #if !defined(_WIN32_WINNT)
00078 #   define _WIN32_WINNT 0x0400
00079 #endif
00080 
00081 #include <wincrypt.h>
00082 
00083 class WinCAPICryptoProvider;
00084 
00085 class DSIG_EXPORT WinCAPICryptoHashHMAC : public XSECCryptoHash {
00086 
00087 
00088 public :
00089 
00090     // Constructors/Destructors
00091     
00092     WinCAPICryptoHashHMAC(WinCAPICryptoProvider * owner, XSECCryptoHash::HashType alg);
00093     virtual ~WinCAPICryptoHashHMAC();
00094 
00095     // Key activities
00096     virtual void        setKey(XSECCryptoKey * key);
00097 
00098     // Hashing Activities
00099     virtual void        reset(void);                    // Reset the hash
00100     virtual void        hash(unsigned char * data, 
00101                              unsigned int length);      // Hash some data
00102     virtual unsigned int finish(unsigned char * hash,
00103                                 unsigned int maxLength);// Finish and get hash
00104 
00105     // Get information
00106     virtual HashType getHashType(void);
00107 
00108 private:
00109 
00110     // Not implemented constructors
00111     WinCAPICryptoHashHMAC();
00112 
00113     WinCAPICryptoProvider       * mp_ownerProvider;
00114 
00115     unsigned char               m_mdValue[XSEC_MAX_HASH_SIZE];      // Final output
00116     unsigned int                m_mdLen;
00117 
00118     ALG_ID                      m_algId;
00119     XSECCryptoHash::HashType    m_hashType;
00120 
00121     HCRYPTHASH                  m_h;
00122 
00123     unsigned char               m_ipadKeyed[XSEC_MAX_HASH_SIZE];
00124     unsigned char               m_opadKeyed[XSEC_MAX_HASH_SIZE];
00125 
00126     unsigned int                m_blockSize;        // Block size (bytes) for used alg.
00127 
00128     // Internal functions
00129     void eraseKeys();
00130 
00131 };
00132 
00133 #endif /* WINCAPICRYPTOHASHHMAC_INCLUDE */

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