| 31. | By itself, using a constant repeating key, a simple XOR cipher can trivially be broken using frequency analysis.
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| 32. | The school's facilities include a Thales Underwater Systems LOFAR ( Low Frequency Analysis & Recording ) training simulator.
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| 33. | The program should use frequency analysis to decode the text ( ie without any clues from the user ).
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| 34. | The most effective way to defeat frequency analysis attacks was the polyalphabetic substitution cipher, invented by Alberti about 1465.
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| 35. | Once he had the proper pairings, he could then use frequency analysis to figure out the actual plaintext letters.
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| 36. | Saskia's code breaking talent leads her to discover that this task requires simple knowledge of frequency analysis ( cryptanalysis ).
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| 37. | In his book, Al-Kindi gave a detailed description of how to use statistics and frequency analysis to decipher encrypted messages.
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| 38. | Common letters and symbols would appear more often on the chain, according to the frequency analysis of the likely input.
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| 39. | One was a very simple ( by modern standards ) letter-group frequency analysis ( which is just a few counters ).
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| 40. | A frequency analysis ought to throw some light on that . talk ) 17 : 47, 9 June 2009 ( UTC)
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