ed448_goldilocks/sign/
context.rs

1/// Ed448 contexts as used by Ed448ph.
2///
3/// Contexts are domain separator strings that can be used to isolate uses of
4/// the algorithm between different protocols (which is very hard to reliably do
5/// otherwise) and between different uses within the same protocol.
6///
7/// To create a context, call either of the following:
8///
9/// - [`SigningKey::with_context`](crate::SigningKey::with_context)
10/// - [`VerifyingKey::with_context`](crate::VerifyingKey::with_context)
11#[derive(Copy, Clone, Debug)]
12pub struct Context<'k, 'v, K> {
13    pub(crate) key: &'k K,
14    pub(crate) value: &'v [u8],
15}
16
17impl<'k, 'v, K> Context<'k, 'v, K> {
18    /// Maximum length of a context string.
19    pub const MAX_LENGTH: usize = 255;
20
21    /// Borrow the key
22    pub fn key(&self) -> &'k K {
23        self.key
24    }
25
26    /// Borrow the value
27    pub fn value(&self) -> &'v [u8] {
28        self.value
29    }
30}
ed448_goldilocks/sign/context.rs

ed448_goldilocks/sign/
context.rs
