Random Number Generator¶

RNG¶

A RNG is an algorithm or device designed to generate a sequence of numbers that lacks any pattern or predictability. Each number in the sequence is supposed to be statistically independent of the others.

TRNG¶

TRNG stands for True Random Number Generator. Unlike RNGs, which are often pseudorandom, TRNGs generate random numbers from a physical process, not a set algorithm.

A TRNG is stateless. That mean we have one weakness. We don't know if the current Entropy output is low or not.

RNG to PRNG¶

RNGs produce true random bits relatively slowly from analog sources, in a nondeterministic way, and with no guarantee of high entropy. In contrast, a Pseudorandom Number Generator (PRNG) (PNRG) produces random-looking bits into a long stream of reliable pseudorandom bits suitable for crypto applications.

links: AC1 TOC - Randomness - Index