WinCAPICryptoKeyDSA.hpp

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/*
 * Copyright 2002-2005 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * XSEC
 *
 * WinCAPICryptoKeyDSA := DSA Keys
 *
 * Author(s): Berin Lautenbach
 *
 * $Id: WinCAPICryptoKeyDSA.hpp,v 1.9 2005/06/04 11:30:26 blautenb Exp $
 *
 */

#ifndef WINCAPICRYPTOKEYDSA_INCLUDE
#define WINCAPICRYPTOKEYDSA_INCLUDE

#include <xsec/enc/XSECCryptoKeyDSA.hpp>

#if !defined(_WIN32_WINNT)
#   define _WIN32_WINNT 0x0400
#endif

#include <wincrypt.h>

class WinCAPICryptoProvider;

class DSIG_EXPORT WinCAPICryptoKeyDSA : public XSECCryptoKeyDSA {

public :

    
    WinCAPICryptoKeyDSA(HCRYPTPROV prov);
    
    virtual ~WinCAPICryptoKeyDSA();

    WinCAPICryptoKeyDSA(HCRYPTPROV prov, HCRYPTKEY k);

    WinCAPICryptoKeyDSA(HCRYPTPROV prov, DWORD keySpec, bool isPrivate);



    virtual XSECCryptoKey::KeyType getKeyType();

    virtual const XMLCh * getProviderName() {return DSIGConstants::s_unicodeStrPROVWinCAPI;}
    
    virtual XSECCryptoKey * clone();



    virtual unsigned int signBase64Signature(unsigned char * hashBuf,
                        unsigned int hashLen,
                        char * base64SignatureBuf,
                        unsigned int base64SignatureBufLen);

    virtual bool verifyBase64Signature(unsigned char * hashBuf, 
                         unsigned int hashLen,
                         char * base64Signature,
                         unsigned int sigLen);



    virtual void loadPBase64BigNums(const char * b64, unsigned int len);

    virtual void loadQBase64BigNums(const char * b64, unsigned int len);

    virtual void loadGBase64BigNums(const char * b64, unsigned int len);
    
    virtual void loadYBase64BigNums(const char * b64, unsigned int len);
    
    virtual void loadJBase64BigNums(const char * b64, unsigned int len);



    unsigned int getPBase64BigNums(char * b64, unsigned int len);

    unsigned int getQBase64BigNums(char * b64, unsigned int len);

    unsigned int getGBase64BigNums(char * b64, unsigned int len);

    unsigned int getYBase64BigNums(char * b64, unsigned int len);


private:

    HCRYPTPROV                  m_p;
    HCRYPTKEY                   m_key;      // For a public key
    DWORD                       m_keySpec;  // For a private key

    BYTE                        * mp_P;
    BYTE                        * mp_Q;
    BYTE                        * mp_G;
    BYTE                        * mp_Y;

    unsigned int                m_PLen;
    unsigned int                m_QLen;
    unsigned int                m_GLen;
    unsigned int                m_YLen;

    // Instruct to import from parameters

    void importKey(void);
    void loadParamsFromKey(void);

    // No default constructor
    WinCAPICryptoKeyDSA();
};

#endif /* WINCAPICRYPTOKEYDSA_INCLUDE */

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