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