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mod listener;
mod transport;
use derive_more::{Display, Error};
pub use listener::{AcceptFuture, Listener, TransportListener};
use rand::{rngs::OsRng, RngCore};
use std::fmt;
pub use transport::*;
#[derive(Debug, Display, Error)]
pub struct SecretKeyError;
pub type SecretKey32 = SecretKey<32>;
#[derive(Clone, PartialEq, Eq)]
pub struct SecretKey<const N: usize>([u8; N]);
impl<const N: usize> fmt::Debug for SecretKey<N> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_tuple("SecretKey")
.field(&"**OMITTED**".to_string())
.finish()
}
}
impl<const N: usize> Default for SecretKey<N> {
fn default() -> Self {
Self::generate().unwrap()
}
}
impl<const N: usize> SecretKey<N> {
pub fn unprotected_as_bytes(&self) -> &[u8] {
&self.0
}
pub fn unprotected_as_byte_array(&self) -> &[u8; N] {
&self.0
}
#[allow(clippy::len_without_is_empty)]
pub fn len(&self) -> usize {
N
}
pub fn generate() -> Result<Self, SecretKeyError> {
if N < 1 || N > (isize::MAX as usize) {
return Err(SecretKeyError);
}
let mut key = [0; N];
OsRng.fill_bytes(&mut key);
Ok(Self(key))
}
pub fn from_slice(slice: &[u8]) -> Result<Self, SecretKeyError> {
if slice.len() != N {
return Err(SecretKeyError);
}
let mut value = [0u8; N];
value[..N].copy_from_slice(slice);
Ok(Self(value))
}
}
pub trait UnprotectedToHexKey {
fn unprotected_to_hex_key(&self) -> String;
}
impl<const N: usize> UnprotectedToHexKey for SecretKey<N> {
fn unprotected_to_hex_key(&self) -> String {
hex::encode(self.unprotected_as_bytes())
}
}