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- Book_cipher abstract "A book cipher is a cipher in which the key is some aspect of a book or other piece of text; books being common and widely available in modern times, users of book ciphers take the position that the details of the key are sufficiently well hidden from attackers in practice. This is in some ways an example of security by obscurity. It is typically essential that both correspondents not only have the same book, but the same edition.Traditionally book ciphers work by replacing words in the plaintext of a message with the location of words from the book being used. In this mode, book ciphers are more properly called codes. This can have problems; if a word appears in the plaintext but not in the book, it cannot be encoded. An alternative approach which gets around this problem is to replace individual letters rather than words. One such method, used in the second Beale cipher, substitutes the first letter of a word in the book with that word's position. In this case, the book cipher is properly a cipher — specifically, a homophonic substitution cipher. However, if used often, this technique has the side effect of creating a larger ciphertext (typically 4 to 6 digits being required to encipher each letter or syllable) and increases the time and effort required to decode the message.".
- Book_cipher thumbnail Exodus_4_-_reference_to_spiritual_possession_putting_words_in_mouths.jpg?width=300.
- Book_cipher wikiPageID "449363".
- Book_cipher wikiPageLength "11353".
- Book_cipher wikiPageOutDegree "79".
- Book_cipher wikiPageRevisionID "690557240".
- Book_cipher wikiPageWikiLink A_Perfect_Spy.
- Book_cipher wikiPageWikiLink A_Presumption_of_Death.
- Book_cipher wikiPageWikiLink Abwehr.
- Book_cipher wikiPageWikiLink American_Revolution.
- Book_cipher wikiPageWikiLink An_Instance_of_the_Fingerpost.
- Book_cipher wikiPageWikiLink Arnold_Cipher.
- Book_cipher wikiPageWikiLink Arthur_Wellesley,_1st_Duke_of_Wellington.
- Book_cipher wikiPageWikiLink Beale_ciphers.
- Book_cipher wikiPageWikiLink Behavioral_Analysis_Unit.
- Book_cipher wikiPageWikiLink Benedict_Arnold.
- Book_cipher wikiPageWikiLink Bible.
- Book_cipher wikiPageWikiLink Bible_concordance.
- Book_cipher wikiPageWikiLink Burn_Notice.
- Book_cipher wikiPageWikiLink Cairo.
- Book_cipher wikiPageWikiLink Candide.
- Book_cipher wikiPageWikiLink Category:Classical_ciphers.
- Book_cipher wikiPageWikiLink Charles_Lamb.
- Book_cipher wikiPageWikiLink Chinese_Triad.
- Book_cipher wikiPageWikiLink Cicada_3301.
- Book_cipher wikiPageWikiLink Cipher.
- Book_cipher wikiPageWikiLink Code_(cryptography).
- Book_cipher wikiPageWikiLink Codebook.
- Book_cipher wikiPageWikiLink Commentaries_on_the_Laws_of_England.
- Book_cipher wikiPageWikiLink Criminal_Minds.
- Book_cipher wikiPageWikiLink Cryptanalysis.
- Book_cipher wikiPageWikiLink Daphne_du_Maurier.
- Book_cipher wikiPageWikiLink Edition_(book).
- Book_cipher wikiPageWikiLink English_Civil_War.
- Book_cipher wikiPageWikiLink Espionage.
- Book_cipher wikiPageWikiLink George_Scovell.
- Book_cipher wikiPageWikiLink Graham_Greene.
- Book_cipher wikiPageWikiLink Harry_Potter.
- Book_cipher wikiPageWikiLink Historical_fiction.
- Book_cipher wikiPageWikiLink Iain_Pears.
- Book_cipher wikiPageWikiLink Jaroslav_Hašek.
- Book_cipher wikiPageWikiLink Jigsaw_puzzle.
- Book_cipher wikiPageWikiLink John_Donne.
- Book_cipher wikiPageWikiLink John_Fowles.
- Book_cipher wikiPageWikiLink Ken_Follett.
- Book_cipher wikiPageWikiLink List_of_The_Unit_characters.
- Book_cipher wikiPageWikiLink Lord_Peter_Wimsey.
- Book_cipher wikiPageWikiLink Lost_(TV_series).
- Book_cipher wikiPageWikiLink Matthew_Reilly.
- Book_cipher wikiPageWikiLink National_Treasure_(film).
- Book_cipher wikiPageWikiLink Nicholas_Dietrich,_Baron_de_Ottendorf.
- Book_cipher wikiPageWikiLink Our_Man_in_Havana.
- Book_cipher wikiPageWikiLink Oxonian.
- Book_cipher wikiPageWikiLink Paradise_Lost.
- Book_cipher wikiPageWikiLink Peninsular_War.
- Book_cipher wikiPageWikiLink Plaintext.
- Book_cipher wikiPageWikiLink Rebecca_(novel).
- Book_cipher wikiPageWikiLink Running_key_cipher.
- Book_cipher wikiPageWikiLink Security_through_obscurity.
- Book_cipher wikiPageWikiLink Sharpes_Sword_(TV_programme).
- Book_cipher wikiPageWikiLink Sherlock_(TV_series).
- Book_cipher wikiPageWikiLink Sherlock_Holmes.
- Book_cipher wikiPageWikiLink Silence_Dogood.
- Book_cipher wikiPageWikiLink Substitution_cipher.
- Book_cipher wikiPageWikiLink Tales_from_Shakespeare.
- Book_cipher wikiPageWikiLink The_Blind_Banker.
- Book_cipher wikiPageWikiLink The_Collector.
- Book_cipher wikiPageWikiLink The_Good_Soldier_Švejk.
- Book_cipher wikiPageWikiLink The_Human_Factor.
- Book_cipher wikiPageWikiLink The_Key_to_Rebecca.
- Book_cipher wikiPageWikiLink The_Lord_of_the_Rings.
- Book_cipher wikiPageWikiLink The_Six_Sacred_Stones.
- Book_cipher wikiPageWikiLink The_Unit.
- Book_cipher wikiPageWikiLink The_Unit_(season_2).
- Book_cipher wikiPageWikiLink The_Valley_of_Fear.
- Book_cipher wikiPageWikiLink United_States_Declaration_of_Independence.
- Book_cipher wikiPageWikiLink Unknown_(2011_film).
- Book_cipher wikiPageWikiLink William_Blackstone.
- Book_cipher wikiPageWikiLink File:Exodus_4_-_reference_to_spiritual_possession_putting_words_in_mouths.jpg.
- Book_cipher wikiPageWikiLinkText "Book cipher".
- Book_cipher wikiPageWikiLinkText "Ottendorf cipher".
- Book_cipher wikiPageWikiLinkText "book cipher".
- Book_cipher wikiPageUsesTemplate Template:Cryptography_navbox.
- Book_cipher wikiPageUsesTemplate Template:Page_needed.
- Book_cipher wikiPageUsesTemplate Template:Reflist.
- Book_cipher subject Category:Classical_ciphers.
- Book_cipher hypernym Cipher.
- Book_cipher type Noble.
- Book_cipher comment "A book cipher is a cipher in which the key is some aspect of a book or other piece of text; books being common and widely available in modern times, users of book ciphers take the position that the details of the key are sufficiently well hidden from attackers in practice. This is in some ways an example of security by obscurity.".
- Book_cipher label "Book cipher".
- Book_cipher sameAs Q997683.
- Book_cipher sameAs Buch-Verschlüsselung.
- Book_cipher sameAs Szyfr_Ottendorfa.
- Book_cipher sameAs m.029t9c.
- Book_cipher sameAs Книжный_шифр.
- Book_cipher sameAs Mật_mã_sách.
- Book_cipher sameAs Q997683.
- Book_cipher wasDerivedFrom Book_cipher?oldid=690557240.
- Book_cipher depiction Exodus_4_-_reference_to_spiritual_possession_putting_words_in_mouths.jpg.
- Book_cipher isPrimaryTopicOf Book_cipher.