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  2. Letter frequency - Wikipedia

    en.wikipedia.org/wiki/Letter_frequency

    The California Job Case was a compartmentalized box for printing in the 19th century, sizes corresponding to the commonality of letters. The frequency of letters in text has been studied for use in cryptanalysis, and frequency analysis in particular, dating back to the Arab mathematician al-Kindi (c. AD 801–873 ), who formally developed the method (the ciphers breakable by this technique go ...

  3. Frequency analysis - Wikipedia

    en.wikipedia.org/wiki/Frequency_analysis

    A typical distribution of letters in English language text. Weak ciphers do not sufficiently mask the distribution, and this might be exploited by a cryptanalyst to read the message. In cryptanalysis, frequency analysis (also known as counting letters) is the study of the frequency of letters or groups of letters in a ciphertext.

  4. Most common words in English - Wikipedia

    en.wikipedia.org/wiki/Most_common_words_in_English

    Basic English; Frequency analysis, the study of the frequency of letters or groups of letters; Letter frequencies; Oxford English Corpus; Swadesh list, a compilation of basic concepts for the purpose of historical-comparative linguistics; Zipf's law, a theory stating that the frequency of any word is inversely proportional to its rank in a ...

  5. Aristocrat Cipher - Wikipedia

    en.wikipedia.org/wiki/Aristocrat_Cipher

    There are many ways to decode these ciphers, the most common being frequency analysis. The process of frequency analysis can be complicated, and it uses educated analysis of the frequency of letters in texts to declassify the key. By calculating the frequency distribution for the K2 Aristocrat and comparing it to the English Distribution, the ...

  6. File:English letter frequency (frequency).svg - Wikipedia

    en.wikipedia.org/wiki/File:English_letter...

    set term svg set key off set style fill solid 1 border-1 set tics out nomirror set border 3 set xrange [.5: 26.5] set output "English letter frequency (alphabetic ...

  7. File:English letter frequency (alphabetic).svg - Wikipedia

    en.wikipedia.org/wiki/File:English_letter...

    The following other wikis use this file: Usage on ar.wikipedia.org تحليل التكرار; Usage on cy.wikipedia.org Seiffr Caesar; Usage on de.wikipedia.org

  8. Contact analysis - Wikipedia

    en.wikipedia.org/wiki/Contact_analysis

    In cryptanalysis, contact analysis is the study of the frequency with which certain symbols precede or follow other symbols. The method is used as an aid to breaking classical ciphers. [1] Contact analysis is based on the fact that, in any sample of any written language, certain symbols appear adjacent to other symbols with varying frequencies. [2]

  9. Scrabble letter distributions - Wikipedia

    en.wikipedia.org/wiki/Scrabble_letter_distributions

    A full English-language set of Scrabble tiles. Editions of the word board game Scrabble in different languages have differing letter distributions of the tiles, because the frequency of each letter of the alphabet is different for every language. As a general rule, the rarer the letter, the more points it is worth.