Struct Rng

pub struct Rng { /* private fields */ }

Random Generator.

If the rand_trait feature is enabled, it implements the rand_core::RngCore and rand_core::CryptoRng traits.

Sample usage

use linux_kcapi::{RngType, Rng};

let rng = Rng::new(RngType::DrbgPrHmacSha256, &seed)?;
rng.get_bytes(&mut data)?;
assert_ne!(zero, data);
rng.get_bytes(&mut data2)?;
assert_ne!(data, data2);

Implementations

impl Rng

pub fn new<T>(rng: RngType, seed: &T) -> Result<Self, Error>

where T: AsRef<[u8]> + Clone,

Create a new random generator.

Errors

• Error::Sys(Errno) in case of low level error

pub fn name(&self) -> RngType

Get Rng type

pub fn get_bytes(&self, dest: &mut [u8]) -> Result<(), Error>

fill destination with random bytes

Errors

• Error::Incomplete if destination was not totally filled
• Error::Sys(Errno) in case of low level error

Trait Implementations

impl RngCore for Rng

Only available with "rand_trait" feature

Panic

next_u32, next_u64 and fill_bytes will panic in case of error

fn next_u32(&mut self) -> u32

Return the next random u32.

fn next_u64(&mut self) -> u64

Return the next random u64.

fn fill_bytes(&mut self, dest: &mut [u8])

Fill dest with random data.

fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), Error>

Fill dest entirely with random data.

impl CryptoRng for Rng

Only available with "rand_trait" feature