Crate rand_jitter

Non-physical true random number generator based on timing jitter.

Note that this RNG is not suited for use cases where cryptographic security is required (also see this discussion).

This is a true random number generator, as opposed to pseudo-random generators. Random numbers generated by JitterRng can be seen as fresh entropy. A consequence is that it is orders of magnitude slower than OsRng and PRNGs (about 10³..10⁶ slower).

There are very few situations where using this RNG is appropriate. Only very few applications require true entropy. A normal PRNG can be statistically indistinguishable, and a cryptographic PRNG should also be as impossible to predict.

JitterRng can be used without the standard library, but not conveniently, you must provide a high-precision timer and carefully have to follow the instructions of JitterRng::new_with_timer.

This implementation is based on Jitterentropy version 2.1.0.

Note: There is no accurate timer available on WASM platforms, to help prevent fingerprinting or timing side-channel attacks. Therefore [JitterRng::new()] is not available on WASM. It is also unavailable with disabled std feature.

Re-exports

pub use rand_core;

Structs

JitterRng

A true random number generator based on jitter in the CPU execution time, and jitter in memory access time.

Enums

TimerError

An error that can occur when JitterRng::test_timer fails.