CascadeMD5.h

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//
// CascadeMD5.h - header file for class CascadeMD5
//
// Copyright (c) 2004, Roku, LLC.  All rights reserved.
//

#ifndef _ROKU_INCLUDE_CASCADE_UTIL_CASCADEMD5_H
#define _ROKU_INCLUDE_CASCADE_UTIL_CASCADEMD5_H

#include <cascade/CascadeObject.h>
#include <cascade/util/CascadeString.h>

class CascadeMD5 : public CascadeObject
{
public:
        CascadeMD5();
        virtual ~CascadeMD5();

public:
    void Begin();
        // starts a new MD5 checksum calculation
    void Calculate(const void * pData, u32 nDataLen);
        // Calculates the MD5 checksum of nDataLen bytes from *pData
        // Calculate() may be called consecutively.
    void End();
        // End() ends the MD5 checksum calculation.

    void GetResult(u8 * pDigestToSet);
        // GetResult sets *pDigestToSet with the 16 byte result of the md5
        // calculation (called the digest).  pDigestToSet must point to
        // 16 consecutive bytes.  The digest result is valid only after
        // a successful Begin, Calculate, End sequence and is valid until
        // the next call to Begin().
        
    void GetResult(CascadeString & digestStringToSet, bool bUpperCase = false);
        // This version of GetResult() sets digestStringToSet with
        // an ascii representation of the digest result suitable
        // for printing or comparing with existing md5 strings.
        // if bUpperCase is set to true the hex digits 'A' - 'F' will
        // be placed as upper case ascii characters in the string.
        // The default is to put lower case characters in the string.

private:
    u32 m_opaque[22];
    u8  m_digest[16];
};

#endif // #ifndef _ROKU_INCLUDE_CASCADE_UTIL_CASCADEMD5_H

//  LOG
//  27-Apr-04   dwoodward       created

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