mirror of https://github.com/ctz/rustls
31 lines
699 B
Rust
31 lines
699 B
Rust
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/// The single place where we generate random material
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/// for our own use. These functions never fail,
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/// they panic on error.
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use ring::rand::{SystemRandom, SecureRandom};
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use crate::msgs::codec;
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/// Fill the whole slice with random material.
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pub fn fill_random(bytes: &mut [u8]) {
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SystemRandom::new()
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.fill(bytes)
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.unwrap();
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}
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/// Make a Vec<u8> of the given size
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/// containing random material.
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pub fn random_vec(len: usize) -> Vec<u8> {
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let mut v = vec![0; len];
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fill_random(&mut v);
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v
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}
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/// Return a uniformly random u32.
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pub fn random_u32() -> u32 {
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let mut buf = [0u8; 4];
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fill_random(&mut buf);
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codec::decode_u32(&buf)
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.unwrap()
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}
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