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/*
* kbiffcrypt.h
* Copyright (C) 2005 Michael Hendricks <michael@palmcluster.org>
*
* $Id$
*
*/
#ifndef KBIFFCRYPT_H
#define KBIFFCRYPT_H
#include <ntqstring.h>
/**
* @brief Useful cryptographic functions for secure authentication
*
* Until TQCA
* (<a href='http://delta.affinix.com/qca/'>TQt Cryptographic Architecture</a>)
* becomes more widely available,
* this will be the place for our custom-written, cryptography functions.
* These are mostly needed to implement various forms of secure authentication
* against POP3 or IMAP mail servers.
*/
namespace KBiffCrypt
{
/**
* @brief Calculate HMAC-MD5 of the given text
*
* Calculates the HMAC-MD5 as specified in RFC 2104. The code
* is originally based on the example code provided in the RFC,
* but it has been modified to remove the dependency on the
* OpenSSL libraries. It, instead, depends on KMD5 provided by
* KDE.
*
* The emphasis in writing this function was readability not speed.
* Since the client will authenticate itself against the server
* every couple minutes (at the most), the speed of the function
* is essentially unimportant. The maintainability of the code
* seemed more important. That's not to say that the function is
* slow, it simply hasn't been optimized for speed. If you want
* to call this function several times per second, look elsewhere.
*
* @param text calculate the HMAC-MD5 of this text
* @param key the key used when calculating the HMAC
* @return the HMAC-MD5 value as a string of lower-case, hexadecimal digits
*/
TQString hmac_md5(const TQString& text, const TQString& key);
}
#endif // KBIFFCRYPT_H
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