Lyon Playfair
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1446 x 1809 Pixel (287711 Bytes)
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Lyon Playfair (1818 - 1898)
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Public domain
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Playfairova šifraPlayfairova šifra je polyalfabetická šifra, kterou navrhl v roce 1854 britský vědec Charles Wheatstone. Pojmenovaná je podle největšího propagátora a britského poslance Lyona Playfaira. Byla používána jako vojenská polní šifra v omezené míře i za druhé světové války. .. pokračovat ve čtení