# Homework Help, Textbook Solutions & Study Documents for Cryptography: A Very Short Introduction (Very Short...

##### Cryptography: A Very Short Introduction (Very Short Introductions)

Author: Fred Piper, Sean Murphy

ISBN: 9780192803153

Documents: 2

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• Symmetric-key cryptography
4 Pages
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###### Symmetric-key cryptography
Course: CS 194
School: Berkeley

CS 161 Fall 2005 Joseph/Tygar/Vazirani/Wagner Computer Security Notes 8 1 Brief History of Cryptography The word "cryptography" comes from the latin root crypt meaning secret, and graphia, meaning writing. So cryptography is literally the stud

• slides4
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###### slides4
Course: CSCI 531
School: USC

CS 531, Fall 2007 Involutions Involutions are their own inverses let S be a finite and let f be a bijection from S to S -1 (i.e., p: S S ), then f is an involution if f=f if j is the image of i, then i is the image of j ex: f 1 2 1 2 3 4 5 S 3 4

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