Everyday Cryptography by Martin Keith M

Author:Martin, Keith M.
Language: eng
Format: epub
Publisher: OUP Oxford
Published: 2012-03-25T16:00:00+00:00

8.1.3 Non-deterministic generators

There are two general approaches to generating randomness. First we will look at non-deterministic generation, which relies on unpredictable sources in the physical world. This is a compelling, but often expensive, approach to producing randomness. On the other hand, there are many situations where we are willing to compromise and use a ‘cheaper’ source of randomness. In this case, deterministic generation techniques, which we examine in Section 8.1.4, can be adopted.

A non-deterministic generator is based on the randomness produced by physical phenomena and therefore provides a source of ‘true randomness’ in the sense that the source is very hard to control and replicate. Non-deterministic generators can be based on hardware or software.

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