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hashes: Remove Clone trait bound from Tag 

Implementors of the Tag trait had to use the #[derive(Clone)] attribute.
This change eliminates this need by removing the Clone trait
bound from the Tag trait.
This commit is contained in:
ndungudedan 2025-02-26 02:21:50 +03:00
parent e80ce4a89c
commit 25707da14a
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1 changed files with 8 additions and 2 deletions
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10
hashes/src/sha256t/mod.rs
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@ -10,7 +10,7 @@ use crate::sha256::Midstate;
use crate::{sha256, HashEngine as _}; use crate::{sha256, HashEngine as _};
/// Trait representing a tag that can be used as a context for SHA256t hashes. /// Trait representing a tag that can be used as a context for SHA256t hashes.
pub trait Tag: Clone { pub trait Tag {
/// The [`Midstate`] after pre-tagging the hash engine. /// The [`Midstate`] after pre-tagging the hash engine.
const MIDSTATE: sha256::Midstate; const MIDSTATE: sha256::Midstate;
} }
@ -118,7 +118,7 @@ impl<T: Tag> core::hash::Hash for Hash<T> {
crate::internal_macros::hash_trait_impls!(256, false, T: Tag); crate::internal_macros::hash_trait_impls!(256, false, T: Tag);
/// Engine to compute SHA256t hash function. /// Engine to compute SHA256t hash function.
#[derive(Debug, Clone)] #[derive(Debug)]
pub struct HashEngine<T>(sha256::HashEngine, PhantomData<T>); pub struct HashEngine<T>(sha256::HashEngine, PhantomData<T>);
impl<T: Tag> Default for HashEngine<T> { impl<T: Tag> Default for HashEngine<T> {
@ -128,6 +128,12 @@ impl<T: Tag> Default for HashEngine<T> {
} }
} }
impl<T: Tag> Clone for HashEngine<T> {
fn clone(&self) -> Self {
Self(self.0.clone(), PhantomData)
}
}
impl<T: Tag> crate::HashEngine for HashEngine<T> { impl<T: Tag> crate::HashEngine for HashEngine<T> {
const BLOCK_SIZE: usize = 64; // Same as sha256::HashEngine::BLOCK_SIZE; const BLOCK_SIZE: usize = 64; // Same as sha256::HashEngine::BLOCK_SIZE;
fn input(&mut self, data: &[u8]) { self.0.input(data) } fn input(&mut self, data: &[u8]) { self.0.input(data) }