Your browser doesn't support the features required by impress.js, so you are presented with a simplified version of this presentation.
For the best experience please use the latest Chrome, Safari or Firefox browser.
CIS 115
Lecture 17: Cryptography
Cryptography
Message to the Class
TSTEPHAAXLISLAESCEMQIYQ
Message to the Class
TSTEPHAAXLISLAESCEMQIYQ
T H I S I
S A S C Y
T A L E Q
E X A M
P L E Q
Early Ciphers
Image Source: Wikipedia
Image Source: Wikipedia
Enigma Key
Enigma Operation
Enigma Stengths
Enigma Weaknesses
Cracking Enigma
Impact
“My own conclusion is that it shortened the war by not less than two years and probably by four years … we wouldn't in fact have been able to do the Normandy Landings, even if we had left the Mediterranean aside, until at the earliest 1946, probably a bit later.”
-Sir Harry Hinsley
British Intelligence Historian
RSA Encryption
RSA Example
RSA Example
RSA Keys
Assignments
Blog 8: TBD
TBD
RSA Activity