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rust-bitcoin-unsafe-fast
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Move from_midstate function 

Move the `sha256::HashEngine::from_midstate` function to be in the same
impl block as `midstate`.

Refactor only, no logic change.
This commit is contained in:
Tobin C. Harding 2024-07-12 13:47:00 +10:00
parent 9efe4cea9d
commit 37b54dd54c
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1 changed files with 16 additions and 16 deletions
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32
hashes/src/sha256.rs
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@ -74,6 +74,22 @@ impl HashEngine {
} }
} }
/// Create a new [`HashEngine`] from a [`Midstate`].
///
/// # Panics
///
/// If `length` is not a multiple of the block size.
pub fn from_midstate(midstate: Midstate, length: usize) -> HashEngine {
assert!(length % BLOCK_SIZE == 0, "length is no multiple of the block size");
let mut ret = [0; 8];
for (ret_val, midstate_bytes) in ret.iter_mut().zip(midstate[..].chunks_exact(4)) {
*ret_val = u32::from_be_bytes(midstate_bytes.try_into().expect("4 byte slice"));
}
HashEngine { buffer: [0; BLOCK_SIZE], h: ret, length }
}
/// Outputs the midstate of the hash engine. This function should not be /// Outputs the midstate of the hash engine. This function should not be
/// used directly unless you really know what you're doing. /// used directly unless you really know what you're doing.
#[cfg(not(hashes_fuzz))] #[cfg(not(hashes_fuzz))]
@ -433,22 +449,6 @@ impl Midstate {
} }
impl HashEngine { impl HashEngine {
/// Create a new [`HashEngine`] from a [`Midstate`].
///
/// # Panics
///
/// If `length` is not a multiple of the block size.
pub fn from_midstate(midstate: Midstate, length: usize) -> HashEngine {
assert!(length % BLOCK_SIZE == 0, "length is no multiple of the block size");
let mut ret = [0; 8];
for (ret_val, midstate_bytes) in ret.iter_mut().zip(midstate[..].chunks_exact(4)) {
*ret_val = u32::from_be_bytes(midstate_bytes.try_into().expect("4 byte slice"));
}
HashEngine { buffer: [0; BLOCK_SIZE], h: ret, length }
}
fn process_block(&mut self) { fn process_block(&mut self) {
#[cfg(all(feature = "std", any(target_arch = "x86", target_arch = "x86_64")))] #[cfg(all(feature = "std", any(target_arch = "x86", target_arch = "x86_64")))]
{ {