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- Playfair_cipher abstract "The Playfair cipher or Playfair square or Wheatstone-Playfair cipher or Wheatstone cipher is a manual symmetric encryption technique and was the first literal digram substitution cipher. The scheme was invented in 1854 by Charles Wheatstone, but bears the name of Lord Playfair who promoted the use of the cipher.The technique encrypts pairs of letters (bigrams or digrams), instead of single letters as in the simple substitution cipher and rather more complex Vigenère cipher systems then in use. The Playfair is thus significantly harder to break since the frequency analysis used for simple substitution ciphers does not work with it. The frequency analysis of bigrams is possible, but considerably more difficult. With 600 possible bigrams rather than the 26 possible monograms (single symbols, usually letters in this context), a considerably larger cipher text is required in order to be useful.".
- Playfair_cipher thumbnail Charles_Wheatstone_-_Project_Gutenberg_etext_13103.jpg?width=300.
- Playfair_cipher wikiPageExternalLink playfair.php.
- Playfair_cipher wikiPageExternalLink playfair_cipher.html.
- Playfair_cipher wikiPageExternalLink fm-34-40-2.
- Playfair_cipher wikiPageExternalLink lect3.htm.
- Playfair_cipher wikiPageID "173586".
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- Playfair_cipher wikiPageOutDegree "50".
- Playfair_cipher wikiPageRevisionID "697979825".
- Playfair_cipher wikiPageWikiLink Australia.
- Playfair_cipher wikiPageWikiLink Bigram.
- Playfair_cipher wikiPageWikiLink Bletchley_Park.
- Playfair_cipher wikiPageWikiLink Category:Classical_ciphers.
- Playfair_cipher wikiPageWikiLink Category:English_inventions.
- Playfair_cipher wikiPageWikiLink Charles_Wheatstone.
- Playfair_cipher wikiPageWikiLink Chatham_Islands.
- Playfair_cipher wikiPageWikiLink Coastwatchers.
- Playfair_cipher wikiPageWikiLink Cryptanalysis.
- Playfair_cipher wikiPageWikiLink Cryptic_crossword.
- Playfair_cipher wikiPageWikiLink Dorothy_L._Sayers.
- Playfair_cipher wikiPageWikiLink Encryption.
- Playfair_cipher wikiPageWikiLink Foreign_and_Commonwealth_Office.
- Playfair_cipher wikiPageWikiLink Four-square_cipher.
- Playfair_cipher wikiPageWikiLink Frequency_analysis.
- Playfair_cipher wikiPageWikiLink Government_of_New_Zealand.
- Playfair_cipher wikiPageWikiLink Hammond_Innes.
- Playfair_cipher wikiPageWikiLink Have_His_Carcase.
- Playfair_cipher wikiPageWikiLink Hill_climbing.
- Playfair_cipher wikiPageWikiLink Joseph_Mauborgne.
- Playfair_cipher wikiPageWikiLink Lyon_Playfair,_1st_Baron_Playfair.
- Playfair_cipher wikiPageWikiLink National_Treasure:_Book_of_Secrets.
- Playfair_cipher wikiPageWikiLink New_Zealand.
- Playfair_cipher wikiPageWikiLink Outline_of_cryptography.
- Playfair_cipher wikiPageWikiLink Polygraphic_substitution.
- Playfair_cipher wikiPageWikiLink Pro_forma.
- Playfair_cipher wikiPageWikiLink Rogue_Angel.
- Playfair_cipher wikiPageWikiLink Second_Boer_War.
- Playfair_cipher wikiPageWikiLink Substitution_cipher.
- Playfair_cipher wikiPageWikiLink Symmetric-key_algorithm.
- Playfair_cipher wikiPageWikiLink The_Listener_(magazine).
- Playfair_cipher wikiPageWikiLink The_Times.
- Playfair_cipher wikiPageWikiLink Two-square_cipher.
- Playfair_cipher wikiPageWikiLink United_Kingdom.
- Playfair_cipher wikiPageWikiLink Vigenère_cipher.
- Playfair_cipher wikiPageWikiLink World_War_I.
- Playfair_cipher wikiPageWikiLink World_War_II.
- Playfair_cipher wikiPageWikiLink File:Charles_Wheatstone_-_Project_Gutenberg_etext_13103.jpg.
- Playfair_cipher wikiPageWikiLink File:Lyon_Playfair.jpg.
- Playfair_cipher wikiPageWikiLink File:Playfair_Cipher_01_HI_to_BM.png.
- Playfair_cipher wikiPageWikiLink File:Playfair_Cipher_02_DE_to_OD.png.
- Playfair_cipher wikiPageWikiLink File:Playfair_Cipher_03_TH_to_ZB.png.
- Playfair_cipher wikiPageWikiLink File:Playfair_Cipher_04_EG_to_XD.png.
- Playfair_cipher wikiPageWikiLink File:Playfair_Cipher_05_OL_to_NA.png.
- Playfair_cipher wikiPageWikiLink File:Playfair_Cipher_10_EX_to_XD.png.
- Playfair_cipher wikiPageWikiLink File:Playfair_Cipher_building_grid_omitted_letters.png.
- Playfair_cipher wikiPageWikiLinkText "Playfair cipher".
- Playfair_cipher wikiPageWikiLinkText "Playfair".
- Playfair_cipher wikiPageUsesTemplate Template:Citation.
- Playfair_cipher wikiPageUsesTemplate Template:Cn.
- Playfair_cipher wikiPageUsesTemplate Template:Cryptography_navbox.
- Playfair_cipher wikiPageUsesTemplate Template:Refimprove.
- Playfair_cipher wikiPageUsesTemplate Template:Reflist.
- Playfair_cipher subject Category:Classical_ciphers.
- Playfair_cipher subject Category:English_inventions.
- Playfair_cipher hypernym Technique.
- Playfair_cipher type TopicalConcept.
- Playfair_cipher type Redirect.
- Playfair_cipher comment "The Playfair cipher or Playfair square or Wheatstone-Playfair cipher or Wheatstone cipher is a manual symmetric encryption technique and was the first literal digram substitution cipher. The scheme was invented in 1854 by Charles Wheatstone, but bears the name of Lord Playfair who promoted the use of the cipher.The technique encrypts pairs of letters (bigrams or digrams), instead of single letters as in the simple substitution cipher and rather more complex Vigenère cipher systems then in use.".
- Playfair_cipher label "Playfair cipher".
- Playfair_cipher sameAs Q829915.
- Playfair_cipher sameAs Karrez_Playfair.
- Playfair_cipher sameAs Xifratge_Playfair.
- Playfair_cipher sameAs Playfairova_šifra.
- Playfair_cipher sameAs Playfair.
- Playfair_cipher sameAs Κρυπτοσύστημα_Playfair.
- Playfair_cipher sameAs Cifrado_de_Playfair.
- Playfair_cipher sameAs Playfair.
- Playfair_cipher sameAs Chiffre_de_Playfair.
- Playfair_cipher sameAs צופן_פלייפייר.
- Playfair_cipher sameAs Playfair-rejtjel.
- Playfair_cipher sameAs Sandi_Playfair.
- Playfair_cipher sameAs Cifrario_Playfair.
- Playfair_cipher sameAs Playfaircijfer.
- Playfair_cipher sameAs Playfair-chiffer.
- Playfair_cipher sameAs Szyfr_Playfair.
- Playfair_cipher sameAs Cifra_Playfair.
- Playfair_cipher sameAs m.017dww.
- Playfair_cipher sameAs Шифр_Плейфера.
- Playfair_cipher sameAs Playfair.
- Playfair_cipher sameAs Mật_mã_Playfair.
- Playfair_cipher sameAs Q829915.
- Playfair_cipher sameAs 波雷費密碼.
- Playfair_cipher wasDerivedFrom Playfair_cipher?oldid=697979825.
- Playfair_cipher depiction Charles_Wheatstone_-_Project_Gutenberg_etext_13103.jpg.
- Playfair_cipher isPrimaryTopicOf Playfair_cipher.