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| Medium Vigenère; Time required: apx. half an hour | |
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| Tweet Topic Started: Oct 11 2005, 07:14 PM (688 Views) | |
| Revelation | Oct 11 2005, 07:14 PM Post #1 |
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Administrator
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Well, Vigenère is truly loved here, so I made a challenge too.
Have fun cracking it
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RRRREJMEEEEEPVKLWENFNVJKEEEEEAOLKAFKLXCFZAASDJXZTTTTTTTLSIOWJXMOKLAFJNNKFNXN RAGRBAQEMHIGDJVDSEOXVIYCELFHWLELJFIENXLRATALSJFSLCYTKLASJDKMHGOVOKAJDNMNUITN RRRRLJVEEEEECLYVYHNVPFTAEEEEEMWLMEIRNGLARWJAKJDFLWNTIERJMIPQWOTZEOCXKNUBNXCN RJIRPOWEANFUSNCZVDVZNMSFEKLOEPZLDKDJWSAAAAAAAOERHJCTNCKFRIMVKSOFOMKMANREWNBN RZUDRGXEEEEENFQIDVLQNCKNEEEEEDGLLLLLLAWIOSNCDARLODMTOEJXMILDFJROTKJSDNLVCZNN | |
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| rot13 | Oct 11 2005, 07:20 PM Post #2 |
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Elite member
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*crack* |
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| Donald | Oct 11 2005, 07:28 PM Post #3 |
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NSA worthy
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Hah! Dang you are fast! 6 minutes from post to crack, and you couldn't have gotten it IMMEDIATLY upon post... Incredible! I'm certain it will take me longer than 6 minutes! Donald |
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| insecure | Oct 11 2005, 07:34 PM Post #4 |
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NSA worthy
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I looked at it on the screen long enough to convince myself that I had found N * the key length for low N. After that, it's basically housekeeping, which was fun the first couple of times but would pall a third time. I really should write a program to do this! I still remember the look on - was it Revelation's? - face when I cracked Donald's first Vigenere by hand. All those astonished little 0s and 1s, glowing orange in his Jawa hood... priceless. |
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| rot13 | Oct 11 2005, 07:42 PM Post #5 |
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Elite member
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Yeah, Vigenere is so much easier to crack than even a monoalphabetic substitution if you have sufficient text. I just use a program to get the key length, and another one to score the possible key values based on how many SENORITA letters they yield. Even if I do them by hand, it is mostly just tedium, it doesn't really require any analysis or guess work. I was thinking about posting a playfair challenge. I have a good bit of trouble with those. |
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| Revelation | Oct 11 2005, 08:09 PM Post #6 |
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Administrator
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Well, I thought this wouldn't last long. I use my own application to crack Vigenère. I still think it's handy
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RRRREJMEEEEEPVKLWENFNVJKEEEEEAOLKAFKLXCFZAASDJXZTTTTTTTLSIOWJXMOKLAFJNNKFNXN RAGRBAQEMHIGDJVDSEOXVIYCELFHWLELJFIENXLRATALSJFSLCYTKLASJDKMHGOVOKAJDNMNUITN RRRRLJVEEEEECLYVYHNVPFTAEEEEEMWLMEIRNGLARWJAKJDFLWNTIERJMIPQWOTZEOCXKNUBNXCN RJIRPOWEANFUSNCZVDVZNMSFEKLOEPZLDKDJWSAAAAAAAOERHJCTNCKFRIMVKSOFOMKMANREWNBN RZUDRGXEEEEENFQIDVLQNCKNEEEEEDGLLLLLLAWIOSNCDARLODMTOEJXMILDFJROTKJSDNLVCZNN | |
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12:26 AM Jul 11