Crate rand_core

Random number generation traits

This crate is mainly of interest to crates publishing implementations of RngCore. Other users are encouraged to use the rand crate instead which re-exports the main traits and error types.

RngCore is the core trait implemented by algorithmic pseudo-random number generators and external random-number sources.

SeedableRng is an extension trait for construction from fixed seeds and other random number generators.

The impls and le sub-modules include a few small functions to assist implementation of RngCore.

Re-exports

• pub use getrandom;

Modules

• block
  The BlockRngCore trait and implementation helpers
• impls
  Helper functions for implementing RngCore functions.
• le
  Little-Endian utilities

Macros

• impl_try_crypto_rng_from_crypto_rng
  Implement TryCryptoRng and TryRngCore for a type implementing CryptoRng.
• impl_try_rng_from_rng_core
  Implement TryRngCore for a type implementing RngCore.

Structs

• OsRng
  A random number generator that retrieves randomness from the operating system.
• RngReadAdapter
  Adapter that enables reading through a io::Read from a RngCore.
• UnwrapErr
  Wrapper around TryRngCore implementation which implements RngCore by panicking on potential errors.

Traits

• CryptoRng
  A marker trait used to indicate that an RngCore implementation is supposed to be cryptographically secure.
• RngCore
  The core of a random number generator.
• SeedableRng
  A random number generator that can be explicitly seeded.
• TryCryptoRng
  A marker trait used to indicate that a TryRngCore implementation is supposed to be cryptographically secure.
• TryRngCore
  A potentially fallible version of RngCore.