Cryptography/Basic Design Principles
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This page may need to be Good ciphers often attempt to have the following traits.
[edit] Diffusion
Having good diffusion means that making a small change in the plain text should ideally cause as much as possible of cipher text to have a fifty percent possibility of change.
For example a Caesar cipher has almost no diffusion while a block cypher may contain lots of it.
[edit] Confusion
For good confusion the relationship between the cypher text and the plain text should be as complex as possible.
