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Poem Code: Poem Code, Cryptography, Poetry, Key (Cryptography), Cipher, Plaintext, Transposition Cipher, Cryptanalysis, Special Operations Executive -

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2026-03-22
146,96 € 244,94 €

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High Quality Content by WIKIPEDIA articles! The poem code is a simple, and insecure, cryptographic method. The method works by the sender and receiver pre-arranging a poem to use. The sender chooses a set number of words at random from the poem and gives each letter in the chosen words a number. The numbers are then used as a key for some cipher to conceal the plaintext of the message. The cipher used was o ... Pilns apraksts

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High Quality Content by WIKIPEDIA articles! The poem code is a simple, and insecure, cryptographic method. The method works by the sender and receiver pre-arranging a poem to use. The sender chooses a set number of words at random from the poem and gives each letter in the chosen words a number. The numbers are then used as a key for some cipher to conceal the plaintext of the message. The cipher used was often double transposition. To indicate to the receiver which words had been chosen an indicator group is sent at the start of the message. The method is insecure for, if one message is broken by any means (including threat, torture, or even cryptanalysis), future messages will be readable if the source poem has been identified. Since the poems used must be memorable for ease of use by an agent, there is a temptation to use well known poems or poems from well known poets. (e.g. SOE agents often used verses by Shakespeare, Racine, Tennyson, Molière, Keats).

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Izdevējs OmniScriptum
Izlaides gads 2026
Vāka tips Mīkstais vāks
EAN 9786130360979
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146,96 € 244,94 €