Trait crypto_bigint::prelude::RandomMod

pub trait RandomMod: Sized + Zero {
    // Required method
    fn random_mod(
        rng: impl CryptoRng + RngCore,
        modulus: &NonZero<Self>
    ) -> Self;
}

Modular random number generation support.

Required Methods

fn random_mod(rng: impl CryptoRng + RngCore, modulus: &NonZero<Self>) -> Self

Generate a cryptographically secure random number which is less than a given modulus.

This function uses rejection sampling, a method which produces an unbiased distribution of in-range values provided the underlying CryptoRng is unbiased, but runs in variable-time.

The variable-time nature of the algorithm should not pose a security issue so long as the underlying random number generator is truly a CryptoRng, where previous outputs are unrelated to subsequent outputs and do not reveal information about the RNG’s internal state.

Implementors

impl RandomMod for Limb

impl<const LIMBS: usize> RandomMod for UInt<LIMBS>