Skip to search.

Breaking News Visit Yahoo! News for the latest.

×Close this window

Dagapeyeff_Cipher · D'Agapeyeff Unsolved Cipher

The Yahoo! Groups Product Blog

Check it out!

Group Information

  • Members: 39
  • Category: Cryptology
  • Founded: Jun 2, 2009
  • Language: English
? Already a member? Sign in to Yahoo!

Yahoo! Groups Tips

Did you know...
Message search is now enhanced, find messages faster. Take it for a spin.

Home

 

Activity within 7 days:

(No Activity)

Description

The D'Agapeyeff cipher is an as-yet unbroken cipher that appears in the first edition of Codes and Ciphers, an elementary book on cryptography published by the Russian-born English cartographer Alexander D'Agapeyeff in 1939.

Offered as a "challenge cipher" at the end of the book, it was not included in later editions, and D'Agapeyeff is said to have admitted later to having forgotten how he had encrypted it. It has been argued that the failure of all attempts at decryption is due to D'Agapeyeff incorrectly encrypting the original text.

--Compiled From Wikipedia (http://en.wikipedia.org/wiki/D%27Agapeyeff_cipher)



The ciphertext is:


75628 28591 62916 48164 91748 58464 74748 28483 81638 18174
74826 26475 83828 49175 74658 37575 75936 36565 81638 17585
75756 46282 92857 46382 75748 38165 81848 56485 64858 56382
72628 36281 81728 16463 75828 16483 63828 58163 63630 47481
91918 46385 84656 48565 62946 26285 91859 17491 72756 46575
71658 36264 74818 28462 82649 18193 65626 48484 91838 57491
81657 27483 83858 28364 62726 26562 83759 27263 82827 27283
82858 47582 81837 28462 82837 58164 75748 58162 92000

Most Recent Messages

  (View All)
Re: Maps
The problem with it is that in subsequent editions of "Codes and Ciphers" the pages are completely different, so B in the 1st edition is completely different
Posted - Tue Jan 15, 2013 1:12 pm
prodigyfeel
Send Email Send Email
Maps
Hello all, Recently Jew-Lee mentioned certain letters found at the bottom of the pages in 'Codes and Ciphers' that were corresponded to the page numbers. I
Posted - Tue Jan 15, 2013 3:09 am
Dave
davemort5
Send Email Send Email
Re: Solved...but...
Hello, What do you think of this site : http://stuartrutter.com/ all the best, Russell
Posted - Mon Jan 14, 2013 7:29 am
rugil69
Send Email Send Email
Re: Solved...but...
Thomas, I'm sold on your interpretation, although I would love to know how you (specifically) arrived at your particular version of the Polybius Square. I
Posted - Mon Jan 14, 2013 6:39 am
Dave
davemort5
Send Email Send Email
Back to basics
2 + years i have worked at this, it has been a fun "hobby" when i need a break from the world. I have been using a spreadsheet for my workings, four columns of
Posted - Sun Jan 13, 2013 5:45 pm
s1t0e2a6l7t0h
Send Email Send Email
Add Dagapeyeff_Cipher to your personalized My Yahoo! page Add to My Yahoo! XML What's This?

Message History

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2013 5
2012 21 1
2011 2 1 2 1 4 4 1
2010 1 2 4 3 4 6 6
2009 17

Copyright © 2010 Yahoo! Inc. All rights reserved.
Privacy Policy - Terms of Service - Guidelines NEW - Help