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X-WR-CALDESC:19 October 1875: Charles Wheatstone\, inventor of the Playfair
Cipher and the Wheatstone Cryptograph\, died. The Playfair Cipher is a ma
nual symmetric encryption technique and was the first literal digraph subs
titution cipher. The Wheatstone Cryptograph was a pre WW I-era cipher devi
ce used extensively by the British during WW I. Learn more about it HERE.
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DESCRIPTION:19 October 1875: Charles Wheatstone\, inventor of the Playfair
Cipher and the Wheatstone Cryptograph\, died. The Playfair Cipher is a man
ual symmetric encryption technique and was the first literal digraph subst
itution cipher. The Wheatstone Cryptograph was a pre WW I-era cipher devic
e used extensively by the British during WW I. Learn more about it HERE.
DTSTART;TZID=America/New_York:20191019T000000
DTEND;TZID=America/New_York:20191019T235900
LOCATION:
SUMMARY:1875: Charles Wheatstone Died.
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