rusty_paseto 0.10.0

A type-driven, ergonomic alternative to JWT for secure stateless PASETO tokens.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36

use super::Key;
use crate::core::Local;
use std::convert::{AsRef, From};
use std::marker::PhantomData;
use zeroize::{Zeroize, ZeroizeOnDrop};

/// A wrapper for a symmetric key
///
/// Keys are created from [Key] of size 32
///
/// This type implements [Zeroize] and [`ZeroizeOnDrop`] to ensure the key material
/// is securely cleared from memory when dropped.
#[derive(Zeroize, ZeroizeOnDrop)]
pub struct PasetoSymmetricKey<Version, Purpose> {
  #[zeroize(skip)]
  version: PhantomData<Version>,
  #[zeroize(skip)]
  purpose: PhantomData<Purpose>,
  key: Key<32>,
}

impl<Version> From<Key<32>> for PasetoSymmetricKey<Version, Local> {
  fn from(key: Key<32>) -> Self {
    Self {
      version: PhantomData,
      purpose: PhantomData,
      key,
    }
  }
}

impl<Version, Purpose> AsRef<[u8]> for PasetoSymmetricKey<Version, Purpose> {
  fn as_ref(&self) -> &[u8] {
    self.key.as_ref()
  }
}