al-Qalqashandī
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Arabic literatureVarieties of adab: compilations, anthologies, and manualsA still later work by al-Qalqashandī, the 15th-century Ṣubḥ al-aʿshā (“The Dawn of the Blind”), approaches Ibn Qutaybah’s in its compendiousness, but its practical bent makes it a kind of comprehensive summary of the secretarial manual genre.
Read MoreA still later work by al-Qalqashandī, the 15th-century Ṣubḥ al-aʿshā (“The Dawn of the Blind”), approaches Ibn Qutaybah’s in its compendiousness, but its practical bent makes it a kind of comprehensive summary of the secretarial manual genre.
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cryptologyEarly cryptographic systems and applications…a result, by about 1412, al-Kalka-shandī could include a respectable, if elementary, treatment of several cryptographic systems in his encyclopedia Ṣubīal-aīshī and give explicit instructions on how to cryptanalyze ciphertext using letter frequency counts complete with lengthy examples to illustrate the technique.
Read More…a result, by about 1412, al-Kalka-shandī could include a respectable, if elementary, treatment of several cryptographic systems in his encyclopedia Ṣubīal-aīshī and give explicit instructions on how to cryptanalyze ciphertext using letter frequency counts complete with lengthy examples to illustrate the technique.
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