منابع مشابه
Portable Random Number Generators
Computers are deterministic devices and a computer-generated random number is a contradiction in terms. As a result, computer-generated pseudorandom numbers are fraught with peril for the unwary. We summarize much that is known about the most well-known pseudorandom number generators: congruential generators. We also provide machine-independent programs to implement the generators in any langua...
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R andom numbers have applications in many areas: simulation, game-playing, cryptography, statistical sampling, evaluation of multiple integrals, particletransport calculations, and computations in statistical physics, to name a few. Since each application involves slightly different criteria for judging the “worthiness” of the random numbers generated, a variety of generators have been develope...
متن کاملSome portable very-long-period random number generators
It is found that a proposed random number generator r an2, recently presented in the Numerical Recipes column [W. H. Press and S. A. Teukolsky, Comput. Phys. 6, 521-524 (1992)], is a good one, but a number of generators are presented that are at least as good and are simpler, much faster, and with periods “billions and billions” of times longer. They are presented not necessarily to supplant ra...
متن کاملPseudo-Random Number Generators
The first option here is not easy. Some pieces of data of this kind exist, for example from the decay of radioactive elements, but generally generation is slow and you cannot get the quantity of random numbers you require for modern applications. The second option here is what I’ll talk about today. Algorithms of this type are called “PseudoRandom Number Generators” (PRNGs). Many bad algorithms...
متن کاملBiometric random number generators
Up to now biometric methods have been used in cryptography for authentication purposes. In this paper we propose to use biological data for generating sequences of random bits. We point out that this new approach could be particularly useful to generate seeds for pseudo-random number generators and so-called ‘‘key sessions’’. Our method is very simple and is based on the observation that, for t...
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ژورنال
عنوان ژورنال: Computers in Physics
سال: 1992
ISSN: 0894-1866
DOI: 10.1063/1.4823101