Timeline of computing hardware before 1950: Difference between revisions

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| [[Islamic mathematics|Arab mathematician]], [[Al-Kindi]] (Alkindus), was a pioneer of [[cryptography]]. He gave the first known recorded explanation of [[cryptanalysis]] in ''A Manuscript on Deciphering Cryptographic Messages''. In particular, he is credited with developing the [[Frequency analysis (cryptanalysis)|frequency analysis]] method whereby variations in the frequency of the occurrence of letters could be analyzed and exploited to break [[encryption]] [[cipher]]s (i.e. crypanalysiscryptanalysis by frequency analysis).<ref>[[Simon Singh]]. ''[[The Code Book]]''. pp. 14–20</ref> The text also covers methods of cryptanalysis, [[Cipher|encipherments]], cryptanalysis of certain encipherments, and statistical analysis of letters and letter combinations in Arabic.{{Citation needed|date=May 2010}}
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