Function random_bytes 

pub fn random_bytes(len: usize) -> Result<Vec<u8>>

Available on crate feature tier3 only.

Return a Vec<u8> of cryptographically secure random bytes.

Convenience for callers who don’t already have a buffer.

Example

use mod_rand::tier3;

let bytes = tier3::random_bytes(32).unwrap();
assert_eq!(bytes.len(), 32);