noise_rust_crypto/
sensitive.rs

1use noise_protocol::U8Array;
2use zeroize::{Zeroize, Zeroizing};
3
4/// Struct holding a value that is safely zeroed on drop.
5pub struct Sensitive<A: U8Array + Zeroize>(Zeroizing<A>);
6
7impl<A: U8Array + Zeroize> Sensitive<A> {
8    pub fn from(a: Zeroizing<A>) -> Self {
9        Sensitive(a)
10    }
11}
12
13impl<A: U8Array + Zeroize> core::ops::Deref for Sensitive<A> {
14    type Target = A;
15    fn deref(&self) -> &Self::Target {
16        &self.0
17    }
18}
19
20impl<A: U8Array + Zeroize> core::ops::DerefMut for Sensitive<A> {
21    fn deref_mut(&mut self) -> &mut Self::Target {
22        &mut self.0
23    }
24}
25
26impl<A> U8Array for Sensitive<A>
27where
28    A: Zeroize + U8Array,
29{
30    fn new() -> Self {
31        Sensitive::from(Zeroizing::new(A::new()))
32    }
33
34    fn new_with(v: u8) -> Self {
35        Sensitive::from(Zeroizing::new(A::new_with(v)))
36    }
37
38    fn from_slice(s: &[u8]) -> Self {
39        Sensitive::from(Zeroizing::new(A::from_slice(s)))
40    }
41
42    fn len() -> usize {
43        A::len()
44    }
45
46    fn as_slice(&self) -> &[u8] {
47        self.0.as_slice()
48    }
49
50    fn as_mut(&mut self) -> &mut [u8] {
51        self.0.as_mut()
52    }
53}
noise_rust_crypto/sensitive.rs

noise_rust_crypto/
sensitive.rs
