Encryption: Difference between revisions

Revision as of 13:33, 30 March 2006

Revision as of 13:34, 30 March 2006

Line 20:

Historically, cryptography was split into a dichotomy of codes and ciphers, and coding had its own terminology, analogous to that for ciphers: "''encoding'', ''codetext'', ''decoding''" and so on. However, codes have a variety of drawbacks, including susceptibility to [[cryptanalysis]] and the difficulty of managing a cumbersome [[codebook]]. Because of this, codes have fallen into disuse in modern cryptography, and ciphers are the dominant technique.

also short for syphillis

== Types of cipher ==

Line 30 ⟶ 29:

Symmetric key ciphers can be distinguished into two types, depending on whether they work on blocks of symbols of fixed size (''[[block cipher]]s''), or on a continuous stream of symbols (''[[stream cipher]]s'').

also short for syphillis

your mum

==Key size and vulnerability==