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This commit is contained in:
Jan Winkelmann (keks)
2025-02-28 18:26:36 +01:00
parent 30c3de3f87
commit 2dba9205e7
20 changed files with 521 additions and 335 deletions
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13
cipher-traits/src/primitives/keyed_hash.rs
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@@ -1,6 +1,11 @@
use std::marker::PhantomData;
/// Models a keyed hash function using an associated function (i.e. without `&self` receiver).
pub trait KeyedHash<const KEY_LEN: usize, const HASH_LEN: usize> {
/// The error type used to signal what went wrong.
type Error;
/// Performs a keyed hash using `key` and `data` and writes the output to `out`
fn keyed_hash(
key: &[u8; KEY_LEN],
data: &[u8],
@@ -8,9 +13,15 @@ pub trait KeyedHash<const KEY_LEN: usize, const HASH_LEN: usize> {
) -> Result<(), Self::Error>;
}
/// Models a keyed hash function using using a method (i.e. with a `&self` receiver).
///
/// This makes type inference easier, but also requires having a [`KeyedHashInstance`] value,
/// instead of just the [`KeyedHash`] type.
pub trait KeyedHashInstance<const KEY_LEN: usize, const HASH_LEN: usize> {
/// The error type used to signal what went wrong.
type Error;
/// Performs a keyed hash using `key` and `data` and writes the output to `out`
fn keyed_hash(
&self,
key: &[u8; KEY_LEN],
@@ -19,8 +30,6 @@ pub trait KeyedHashInstance<const KEY_LEN: usize, const HASH_LEN: usize> {
) -> Result<(), Self::Error>;
}
use std::marker::PhantomData;
/// This is a helper to allow for type parameter inference when calling functions
/// that need a [KeyedHash].
///