feat: expose MD5 compression function

Author: TomAFrench

md5/CHANGELOG.md

@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## 0.11.0 (UNRELEASED)
 ### Added
 - `alloc` crate feature ([#678])
+- Expose compression function from the `block_api` module ([#735])
 
 ### Changed
 - Edition changed to 2024 and MSRV bumped to 1.85 ([#652])

md5/src/block_api.rs

@@ -10,7 +10,8 @@ use digest::{
     typenum::{U16, U24, U64, Unsigned},
 };
 
-use crate::{compress::compress, consts};
+pub use crate::compress::compress;
+use crate::consts;
 
 const STATE_LEN: usize = 4;
 

md5/src/compress/soft.rs

@@ -143,6 +143,7 @@ pub fn compress_block(state: &mut [u32; 4], input: &[u8; 64]) {
 }
 
 #[inline]
+/// MD5 compression function
 pub fn compress(state: &mut [u32; 4], blocks: &[[u8; 64]]) {
     for block in blocks {
         compress_block(state, block)