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In classical cryptography, the running key cipher is a type of polyalphabetic substitution cipher in which a text, typically from a book, is used to provide a very long keystream.
Variants, Security and cryptanalysis & Example
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key running cipher message used text book ciphertext plaintext recovered cryptanalysis several block characters running-key texts solution ciphers polyalphabetic substitution
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Running key cipher | is a | type of polyalphabetic substitution cipher in which a text | 0.90 | text |
| Running key cipher | is a | polyalphabetic substitution | 0.90 | text |
| that of Trithemius | instance of | David Kahn's term for systems | 0.80 | text |
| which cycle through every alphabet in a fixed order before repeating | instance of | David Kahn's term for systems | 0.80 | text |
| Running key cipher | related to Confusion | Because | 0.60 | section |
| Running key cipher | related to Confusion | They | 0.60 | section |
| Running key cipher | related to Confusion | The | 0.60 | section |
| Running key cipher | related to Confusion | Perhaps | 0.60 | section |
| Running key cipher | related to Further reading | Lock-green | 0.60 | section |
| Running key cipher | related to Further reading | Lock-gray-alt-2 | 0.60 | section |
| Running key cipher | related to Further reading | Lock-red-alt-2 | 0.60 | section |
| Running key cipher | related to Further reading | Wikisource-logo | 0.60 | section |
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