MessageImprint.h

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#ifndef __MESSAGEIMPRINT_H__
#define __MESSAGEIMPRINT_H__

#include "PKIFdll.h"
#include "PKIFTSPDLL.h"
#include "PKIFCryptoConstants.h"

// forward definitions
struct CPKIFMessageImprintImpl;
FD_MC_PTR();

FD_SMART_PTR(CPKIFAlgorithmIdentifier);
FD_SMART_PTR(CPKIFBuffer);

class PKIFTSP_API CPKIFMessageImprint
{
public:
    CPKIFMessageImprint();
    CPKIFMessageImprint(const CPKIFBufferPtr& miBuf);
    ~CPKIFMessageImprint();

    //set/get algorithm used to produce hash passed to SetHashedMessage
    void SetHashAlgorithm(CPKIFAlgorithmIdentifierPtr& hashAlgorithm);
    CPKIFAlgorithmIdentifierPtr GetHashAlgorithm() const;

    //set/get hash value produces by hashing external message with hash alg passed
    //to SetHashAlgorithm
    void SetHashedMessage(CPKIFBufferPtr& hashedMessage);
    CPKIFBufferPtr GetHashedMessage() const;

    //convenience function that takes a message and an alg id and produces
    //a hash value (for hashing large blocks of data produce hash independent
    //of this class and use the Set/Get methods above).  If m is NULL or m does not 
    //contain the necessary interface then the CPKIFCAPIRaw class will be used to 
    //produce hash.  Pass a mediator containing the IPKIFCryptoMisc interface to 
    //control the hash implementation used.  The hashed value is returned.
    CPKIFBufferPtr HashAndSet(PKIFCRYPTO::HASH_ALG hashAlgorithm, CPKIFBufferPtr& dataToHash, IPKIFMediator* m = NULL);

private:
    CPKIFMessageImprint(const CPKIFMessageImprint& copy);
    CPKIFMessageImprint& operator=(const CPKIFMessageImprint& rhs); //added 4/6/2004

    struct CPKIFMessageImprintImpl *m_impl;
};
DECLARE_SMART_POINTERS(CPKIFMessageImprint);

#endif //__MESSAGEIMPRINT_H__