Category
page 1Egyptian cryptographers

Ahmad al-Qalqashandi
'''Shihāb al-Dīn Abū 'l-Abbās Aḥmad ibn ‘Alī ibn Aḥmad ‘Abd Allāh al-Fazārī al-Shāfiʿī better known by the epithet al-Qalqashandī' (; 1355 or 1356 – 1418), was a medieval Arab Egyptian encyclopedist, polymath and mathematician. A native of the Nile Delta, he became a Scribe of the Scroll (Katib al-Darj), or clerk of the Mamluk chancery in Cairo, Egypt. His magnum opus is the voluminous administrative encyclopedia Ṣubḥ al-Aʿshá''.
Martin “John” M. Atalla
electrical engineer and "Father of the PIN" (1924–2009)
Taher Elgamal
American cryptographer