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ACKNOWLEDGEMENT

FreeOICQ developers reverse-engineered Tencent's Win32 client binaries and
published their discovery on http://sourceforge.net/projects/foicq/.  Among
their codes are segments of assembly code for the OICQ cipher and login key
generation.

I identified the algorithm for login key generation to be MD5.

Chen Peng reverse-engineered the rest of assembly codes created by FreeOICQ and
identified the core cipher used by OICQ to be a weakened version of TEA, Tiny
Encryption Algorithm.

TEA was invented by David Wheeler and Roger Needham at Cambridge University.
They recommend using 32 rounds.  OICQ only uses 16 rounds.

COPYRIGHT AND LICENCE

Copyright (c) 2003 Shufeng Tan.  All rights reserved.

This package is free software and is provided "as is" without express