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#123198 - 2004-07-19 02:47 AM KiXgolf: Vigenere Cipher announcement
Sealeopard Sealeopard KiX Master Registered: 2001-04-25 Posts: 11165 Loc: Boston, MA, USA	It is with great pleasure that I am announcing a new KiXgolf tournament. This round's theme resolves around cryptography, thus get your ASCII tables ready :-) The cipher in question is called Vigenere and is a polyalphabetic substitution cipher. The tournament starts Saturday, July 24, 3pm EST with a private coding phase lasting until Friday, July 30, 8pm EST. The public coding phase will then last until Sunday, August 8, 9pm EST. The usual rules apply and for information on KiXgolf and the previous tournaments, see the KiXtart BBS at http://www.kixtart.org/ubbthreads or search the kiXtart BBS with keyword "KiXgolf". _________________________ There are two types of vessels, submarines and targets.
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#123199 - 2004-07-19 06:33 AM Re: KiXgolf: Vigenere Cipher announcement
Bryce Bryce KiX Supporter Registered: 2000-02-29 Posts: 3167 Loc: Houston TX	DPFY KTQV JB LIY!!!
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#123200 - 2004-07-19 09:32 AM Re: KiXgolf: Vigenere Cipher announcement
Lonkero Lonkero KiX Master Guru Registered: 2001-06-05 Posts: 22346 Loc: OK	do I read wrong or is this one those silly thingies that don't support neither case-sensitivity nor scandinavian letters so, to be able to use this, one would need to first translate to some substition algorithm similar to base 64. _________________________ ! download KiXnet
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#123201 - 2004-07-19 10:42 AM Re: KiXgolf: Vigenere Cipher announcement
MightyR1 MightyR1 MM club member Registered: 1999-09-09 Posts: 1264 Loc: The Netherlands	Jens, Looking forward to the game. Sounds interresting _________________________ Greetz, Patrick Rutten - We'll either find a way or make one... - Knowledge is power; knowing how to find it is more powerful... - Problems don't exist; they are challenges...
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#123202 - 2004-07-19 12:24 PM Re: KiXgolf: Vigenere Cipher announcement
Lonkero Lonkero KiX Master Guru Registered: 2001-06-05 Posts: 22346 Loc: OK	k, studied the cipher (and made an udf out of it) so think that I'm ready for this golf round _________________________ ! download KiXnet
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#123203 - 2004-07-19 01:41 PM Re: KiXgolf: Vigenere Cipher announcement
MightyR1 MightyR1 MM club member Registered: 1999-09-09 Posts: 1264 Loc: The Netherlands	Lonk, did you try it? I get an "Error in expression"... _________________________ Greetz, Patrick Rutten - We'll either find a way or make one... - Knowledge is power; knowing how to find it is more powerful... - Problems don't exist; they are challenges...
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#123204 - 2004-07-19 03:53 PM Re: KiXgolf: Vigenere Cipher announcement
Lonkero Lonkero KiX Master Guru Registered: 2001-06-05 Posts: 22346 Loc: OK	weird. I ran it multiple times over and over... must have messed up something when inserted the header... _________________________ ! download KiXnet
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#123205 - 2004-07-19 03:55 PM Re: KiXgolf: Vigenere Cipher announcement
Lonkero Lonkero KiX Master Guru Registered: 2001-06-05 Posts: 22346 Loc: OK	works now. I made a boo-boo when added some code for board users. btw, this thingie is totally unusable as such. improved version which has special characters and case-sensitivity... say, support for 256 characters, that would be usable. and I think I might even create such. Edited by Lonkero (2004-07-19 03:57 PM) _________________________ ! download KiXnet
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#123206 - 2004-07-19 10:31 PM Re: KiXgolf: Vigenere Cipher announcement
Bryce Bryce KiX Supporter Registered: 2000-02-29 Posts: 3167 Loc: Houston TX	so, lonkero, is try to trump us all!
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#123207 - 2004-07-20 11:21 AM Re: KiXgolf: Vigenere Cipher announcement
Richard H. Richard H. Administrator Registered: 2000-01-24 Posts: 4946 Loc: Leatherhead, Surrey, UK	I've a good solution, but I'll be away in sunny Marbella for that week. Is there anyone not participating who wouldn't mind holding the code for me and tweaking it to fit the golf template?
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#123208 - 2004-07-20 01:36 PM Re: KiXgolf: Vigenere Cipher announcement
Lonkero Lonkero KiX Master Guru Registered: 2001-06-05 Posts: 22346 Loc: OK	I'm sure the task is not to create vigenere cipher itself, but something around it. _________________________ ! download KiXnet
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#123209 - 2004-07-20 01:44 PM Re: KiXgolf: Vigenere Cipher announcement
MightyR1 MightyR1 MM club member Registered: 1999-09-09 Posts: 1264 Loc: The Netherlands	My guess too, think it will be hacking / cracking the code... Or find the "key" _________________________ Greetz, Patrick Rutten - We'll either find a way or make one... - Knowledge is power; knowing how to find it is more powerful... - Problems don't exist; they are challenges...
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#123210 - 2004-07-20 01:47 PM Re: KiXgolf: Vigenere Cipher announcement
Lonkero Lonkero KiX Master Guru Registered: 2001-06-05 Posts: 22346 Loc: OK	I've tested one cracker and it failed. the problem with the cracker is that what more possibilities you have with keyword lenght, that more you have possibilities for failure, and so on. what shorter text, yet again false positives... but something about cracking it might be. _________________________ ! download KiXnet
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#123211 - 2004-07-20 03:44 PM Re: KiXgolf: Vigenere Cipher announcement
Richard H. Richard H. Administrator Registered: 2000-01-24 Posts: 4946 Loc: Leatherhead, Surrey, UK	Ah, that would be more of a challenge. I found a site with a Java based cracker which was very interesting. It required manual intervention to interperet the results and retry but the technique it used was interesting. I don't think that a 100% successful automated cracker is at all possible, although one that can offer a number of likely results should be. Selecting an couple of unlikely characters like "Q","X" and "Z" to use as word punctuation will peturb the letter frequency sufficiently to defeat the letter frequency analysis method of determining key word length and alphabet shift. In that case I'll post my code.
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#123212 - 2004-07-21 05:53 PM Re: KiXgolf: Vigenere Cipher announcement
maciep maciep Korg Regular Registered: 2002-06-14 Posts: 947 Loc: Pittsburgh	So is this a mini tournament going on here vigenere udf? _________________________ Eric
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#123213 - 2004-07-21 08:34 PM Re: KiXgolf: Vigenere Cipher announcement
Lonkero Lonkero KiX Master Guru Registered: 2001-06-05 Posts: 22346 Loc: OK	well, not actually... I wrote mine as a test but then saw bryce's vigen and decided to post mine as it was totally different. then, for some reason hoby took on it and wrote his own... quess he started really competing... and posted when was told that this was not all the next golf would be about... on his part I'm just quessing, m'kay? _________________________ ! download KiXnet
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#123214 - 2004-07-21 08:55 PM Re: KiXgolf: Vigenere Cipher announcement
maciep maciep Korg Regular Registered: 2002-06-14 Posts: 947 Loc: Pittsburgh	I wrote one too when i saw this post and was thinking about posting in the udf forum (in your thread). But i didn't know what the actual golf challenge will be. _________________________ Eric
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#123215 - 2004-07-23 03:17 PM Re: KiXgolf: Vigenere Cipher announcement
Lonkero Lonkero KiX Master Guru Registered: 2001-06-05 Posts: 22346 Loc: OK	only about 31 hours left waiting... _________________________ ! download KiXnet
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#123216 - 2004-07-24 07:11 PM Re: KiXgolf: Vigenere Cipher announcement
Lonkero Lonkero KiX Master Guru Registered: 2001-06-05 Posts: 22346 Loc: OK	still 2 hours.... _________________________ ! download KiXnet
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#123217 - 2004-07-24 07:59 PM Re: KiXgolf: Vigenere Cipher announcement
NTDOC NTDOC Administrator Registered: 2000-07-28 Posts: 11634 Loc: Space	Well don't see you or Jens online right now so don't think you will be on time for Golf.
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