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Pseudorandom generator. In theoretical computer science and cryptography, a pseudorandom generator (PRG) for a class of statistical tests is a deterministic procedure that maps a random seed to a longer pseudorandom string such that no statistical test in the class can distinguish between the output of the generator and the uniform distribution.
The following is a list of adjectival forms of cities in English and their demonymic equivalents, which denote the people or the inhabitants of these cities. Demonyms ending in -ese are the same in the singular and plural forms. The ending -man has feminine equivalent -woman (e.g. an Irishman and a Scotswoman ).
The following is a list of adjectival and demonymic forms of countries and nations in English and their demonymic equivalents. A country adjective describes something as being from that country, for example, "Italian cuisine" is "cuisine of Italy". A country demonym denotes the people or the inhabitants of or from there; for example, "Germans ...
Random number generation is a process by which, often by means of a random number generator ( RNG ), a sequence of numbers or symbols that cannot be reasonably predicted better than by random chance is generated. This means that the particular outcome sequence will contain some patterns detectable in hindsight but impossible to foresee.
A pseudorandom number generator ( PRNG ), also known as a deterministic random bit generator ( DRBG ), [1] is an algorithm for generating a sequence of numbers whose properties approximate the properties of sequences of random numbers. The PRNG-generated sequence is not truly random, because it is completely determined by an initial value ...
However, generally they are considerably slower (typically by a factor 2–10) than fast, non-cryptographic random number generators. These include: Stream ciphers. Popular choices are Salsa20 or ChaCha (often with the number of rounds reduced to 8 for speed), ISAAC, HC-128 and RC4. Block ciphers in counter mode.
WP:RAN. On Wikipedia and other sites running on MediaWiki, Special:Randomcan be used to access a random article in the main namespace; this feature is useful as a tool to generate a random article. Depending on your browser, it's also possible to load a random page using a keyboard shortcut(in Firefox, Edge, and Chrome Alt-Shift+X).
A pseudorandom generator can be constructed from one-way permutation ƒ as follows: G l: {0,1} l →{0,1} l+1 = ƒ(x).B(x), where B is hard-core predicate of ƒ and "." is a concatenation operator. Note, that by the theorem proven above, it is only needed to show the existence of a generator that adds just one pseudorandom bit.