From 9c9ffe70a75d6f5a165a397bc1e4c2918a3ab9d1 Mon Sep 17 00:00:00 2001
From: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
Date: Wed, 15 Nov 2017 23:16:37 +0000
Subject: [PATCH] caps: Do the same fixes, unbreak blake2 and simplify code.

---
 src/caps.rs | 29 +++++++----------------------
 1 file changed, 7 insertions(+), 22 deletions(-)

diff --git a/src/caps.rs b/src/caps.rs
index 27d511ca..05f84e1e 100644
--- a/src/caps.rs
+++ b/src/caps.rs
@@ -15,12 +15,11 @@ use error::Error;
 use ns;
 use base64;
 
-use digest::Digest;
 use sha1::Sha1;
 use sha2::{Sha256, Sha512};
 use sha3::{Sha3_256, Sha3_512};
-//use blake2::Blake2b;
-//use digest::{Digest, VariableOutput};
+use blake2::Blake2b;
+use digest::{Digest, VariableOutput};
 
 #[derive(Debug, Clone)]
 pub struct Caps {
@@ -141,38 +140,25 @@ pub fn hash_caps(data: &[u8], algo: Algo) -> Result<Hash, String> {
     Ok(Hash {
         hash: match algo {
             Algo::Sha_1 => {
-                let mut hasher = Sha1::default();
-                hasher.input(data);
-                let hash = hasher.result();
+                let hash = Sha1::digest(data);
                 get_hash_vec(hash.as_slice())
             },
             Algo::Sha_256 => {
-                let mut hasher = Sha256::default();
-                hasher.input(data);
-                let hash = hasher.result();
+                let hash = Sha256::digest(data);
                 get_hash_vec(hash.as_slice())
             },
             Algo::Sha_512 => {
-                let mut hasher = Sha512::default();
-                hasher.input(data);
-                let hash = hasher.result();
+                let hash = Sha512::digest(data);
                 get_hash_vec(hash.as_slice())
             },
             Algo::Sha3_256 => {
-                let mut hasher = Sha3_256::default();
-                hasher.input(data);
-                let hash = hasher.result();
+                let hash = Sha3_256::digest(data);
                 get_hash_vec(hash.as_slice())
             },
             Algo::Sha3_512 => {
-                let mut hasher = Sha3_512::default();
-                hasher.input(data);
-                let hash = hasher.result();
+                let hash = Sha3_512::digest(data);
                 get_hash_vec(hash.as_slice())
             },
-            Algo::Blake2b_256
-          | Algo::Blake2b_512 => panic!("See https://github.com/RustCrypto/hashes/issues/34"),
-            /*
             Algo::Blake2b_256 => {
                 let mut hasher = Blake2b::default();
                 hasher.input(data);
@@ -187,7 +173,6 @@ pub fn hash_caps(data: &[u8], algo: Algo) -> Result<Hash, String> {
                 let hash = hasher.variable_result(&mut buf).unwrap();
                 get_hash_vec(hash)
             },
-            */
             Algo::Unknown(algo) => return Err(format!("Unknown algorithm: {}.", algo)),
         },
         algo: algo,