Comments on: Vigenère http://www.murky.org/blg/vigenre/ Tending to Geekiness Mon, 15 Mar 2010 05:45:52 -0600 hourly 1 By: Murk http://www.murky.org/blg/vigenre/#comment-65021 Murk Tue, 26 Aug 2008 15:44:04 +0000 http://www.murky.org/blg/?p=91#comment-65021 Here is <a href="http://www.murky.org/blg/index-of-coincidences-a-worked-example/" rel="nofollow">an example of a breaking method</a>. <a href="http://www.murky.org/blg/kasiskikerckhoff-attack-a-worked-example/" rel="nofollow">Here is another</a>. Here is an example of a breaking method.

Here is another.

]]> By: Raymond http://www.murky.org/blg/vigenre/#comment-12 Raymond Mon, 12 Sep 2005 19:23:38 +0000 http://www.murky.org/blg/?p=91#comment-12 Great explanation! I need a "light" pure-text (no control codes) cipher... by any chance do you have any source for Pascal/Delphi or VB lying around??? Thanks! (Edit: Sorry, no. However it isn't that tricky. Convert to ascii. Check if it is in range of A to Z or a to z. Add the number represented by the key letter (e.g. add 13 for m), subtract 26 if the result is too high. Convert back to character - Murk). Great explanation!

I need a “light” pure-text (no control codes) cipher… by any chance do you have any source for Pascal/Delphi or VB lying around???

Thanks!

(Edit: Sorry, no. However it isn’t that tricky. Convert to ascii. Check if it is in range of A to Z or a to z. Add the number represented by the key letter (e.g. add 13 for m), subtract 26 if the result is too high. Convert back to character – Murk).

]]> By: NoEvidenZ http://www.murky.org/blg/vigenre/#comment-11 NoEvidenZ Fri, 08 Apr 2005 22:28:27 +0000 http://www.murky.org/blg/?p=91#comment-11 Good articles so far, but i too can't understand the part after "How can it be broken?" (Edit: I really don't know how to put it another way, Have a look at the article on the Kasiski attack, at its heart, the index of coincidence is just a variation on this - Murk) Good articles so far, but i too can’t understand the part after “How can it be broken?”

(Edit: I really don’t know how to put it another way, Have a look at the article on the Kasiski attack, at its heart, the index of coincidence is just a variation on this – Murk)

]]> By: Frosh http://www.murky.org/blg/vigenre/#comment-10 Frosh Thu, 14 Oct 2004 06:53:41 +0000 http://www.murky.org/blg/?p=91#comment-10 I just started reading from the beginning...woot...pretty nice...Mark I don't understand the part after "How can it be broken?" Could you give me some examples? Thanks... (Edit: That's for another day... what I've put is enough for someone to work it out. I'm not going to give all the game away in one fell swoop! I plan to do some worked examples later on - however these take a deal of time to prepare, in the meantime, do sub to the RSS feed for articles on this, and other topics of interest to me - Murk) I just started reading from the beginning…woot…pretty nice…Mark
I don’t understand the part after “How can it be broken?”
Could you give me some examples?
Thanks…

(Edit: That’s for another day… what I’ve put is enough for someone to work it out. I’m not going to give all the game away in one fell swoop! I plan to do some worked examples later on – however these take a deal of time to prepare, in the meantime, do sub to the RSS feed for articles on this, and other topics of interest to me – Murk)

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