Crypto U2, Crypto design principles

jjanesko
Mind Map by jjanesko, updated more than 1 year ago
jjanesko
Created by jjanesko almost 8 years ago
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IYM002 (Unit 2 - Basics of Crypto Design) Mind Map on Crypto U2, Crypto design principles, created by jjanesko on 03/31/2013.

Resource summary

Crypto U2, Crypto design principles
1 large keyspace is necessary
2 possible to break cryptosystem without first determining the key
2.1 cryptosystem designers must worry about more than the key
3 effective techniques for disguising plaintext
3.1 increase alphabet sizes
3.2 ensure that each plaintext letter encrypts to a variety of different ciphertext "letters"
3.3 introduce positional dependency
4 always a tradeoff between efficiency and security
5 can design for attacks that we know already, but keep watch for new attacks and adapt as needed
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