Trait RNG 

pub trait RNG: Default {
    // Required methods
    fn add_seed_keymaterial(
        &mut self,
        additional_seed: impl KeyMaterial,
    ) -> Result<(), RNGError>;
    fn next_int(&mut self) -> Result<u32, RNGError>;
    fn next_bytes(&mut self, len: usize) -> Result<Vec<u8>, RNGError>;
    fn next_bytes_out(&mut self, out: &mut [u8]) -> Result<usize, RNGError>;
    fn fill_keymaterial_out(
        &mut self,
        out: &mut impl KeyMaterial,
    ) -> Result<usize, RNGError>;
    fn security_strength(&self) -> SecurityStrength;
}

An interface for random number generation. This interface is meant to be simpler and more ergonomic than the interfaces provided by the rng crate, but that one should be used by applications that intend to submit to FIPS certification as it more closely aligns with the requirements of SP 800-90A. Note: this interface produces bytes. If you want a KeyMaterial, then use KeyMaterialInternal::from_rng.

Required Methods

fn add_seed_keymaterial( &mut self, additional_seed: impl KeyMaterial, ) -> Result<(), RNGError>

fn next_int(&mut self) -> Result<u32, RNGError>

fn next_bytes(&mut self, len: usize) -> Result<Vec<u8>, RNGError>

Returns the number of requested bytes.

fn next_bytes_out(&mut self, out: &mut [u8]) -> Result<usize, RNGError>

Returns the number of bytes written.

fn fill_keymaterial_out( &mut self, out: &mut impl KeyMaterial, ) -> Result<usize, RNGError>

fn security_strength(&self) -> SecurityStrength

Returns the Security Strength of this RNG.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors