replace sha2 with blake2 for duplicates

Cargo.toml

@@ -1,13 +1,13 @@
 [package]
 name = "du-rust"
-version = "0.1.0"
+version = "0.1.1"
 edition = "2021"
 authors = ["Sam Hadow"]
 
 [dependencies]
+blake2 = "0.10.6"
 clap = { version = "4.4.6", features = ["derive"] }
 rayon = "1.8.0"
-sha2 = "0.10.8"
 
 [profile.release]
 strip = true

PKGBUILD

@@ -2,7 +2,7 @@
 
 _pkgname=disk-usage
 pkgname=du-rust
-pkgver=0.1.0
+pkgver=0.1.1
 pkgrel=1
 pkgdesc="Disk usage tool in rust."
 arch=('x86_64')

src/duplicates.rs

@@ -8,7 +8,7 @@ use std::fs;
 use std::path::{Path, PathBuf};
 
 // hash
-use sha2::{Digest, Sha256};
+use blake2::{Blake2b512, Digest};
 use std::io::{BufReader, Read};
 
 // parallelism
@@ -18,7 +18,7 @@ use std::sync::{Arc, Mutex};
 impl FileTree {
     /// Find duplicates in a directory (including sub-directories).
     ///
-    /// If path exist in tree, find duplicates using sha256. If 2 (or more) files have the same hash they're duplicates.
+    /// If path exist in tree, find duplicates using Blake2b512. If 2 (or more) files have the same hash they're duplicates.
     ///
     /// returns a `Vec` containing a `Vec<PathBuf>` for each group of duplicates.
     ///
@@ -52,7 +52,7 @@ impl FileTree {
                 // parallelized loop
                 intersection.par_iter().for_each(|item| {
                     if let Ok(file) = fs::File::open(item) {
-                        let mut sha256 = Sha256::new();
+                        let mut hasher = Blake2b512::new();
 
                         // sizable buffer
                         let mut buffer = [0; 8192];
@@ -66,17 +66,18 @@ impl FileTree {
                             if count == 0 {
                                 break;
                             }
-                            sha256.update(&buffer[..count]);
+                            hasher.update(&buffer[..count]);
                         }
 
-                        let hash = sha256.finalize();
+                        let hash = hasher.finalize();
+                        let hash_bytes: [u8; 32] = hash.as_slice()[..32].try_into().unwrap();
 
                         // Use a Mutex to update HashMap in parallel
                         let mut locked_hashes = hashes.lock().unwrap();
                         locked_hashes
-                            .entry(hash.into())
+                            .entry(hash_bytes)
                             .or_default()
-                            .push(item.clone());
+                            .push(PathBuf::from(item));
                     }
                 });
 
@@ -100,7 +101,7 @@ impl FileTree {
         }
     }
 
-    /// Collision shouldn't happen with sha256, but a method to check if there is a collision in duplicates found
+    /// Collision shouldn't happen with blake2, but a method to check if there is a collision in duplicates found
     /// # Examples
     /// ```no_run
     /// let p = Path::new(".");