diff --git a/des/src/consts.rs b/des/src/consts.rs
index b6414a8c..90f67f68 100644
--- a/des/src/consts.rs
+++ b/des/src/consts.rs
@@ -58,69 +58,75 @@ pub const SBOXES: [[u8; 64]; 8] = [
     ],
 ];
 
-pub(crate) static WEAK_KEYS: &[u64; 64] = &[
-    u64::from_ne_bytes([0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01]),
-    u64::from_ne_bytes([0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE]),
-    u64::from_ne_bytes([0xE0, 0xE0, 0xE0, 0xE0, 0xF1, 0xF1, 0xF1, 0xF1]),
-    u64::from_ne_bytes([0x1F, 0x1F, 0x1F, 0x1F, 0x0E, 0x0E, 0x0E, 0x0E]),
-    u64::from_ne_bytes([0x01, 0x1F, 0x01, 0x1F, 0x01, 0x0E, 0x01, 0x0E]),
-    u64::from_ne_bytes([0x1F, 0x01, 0x1F, 0x01, 0x0E, 0x01, 0x0E, 0x01]),
-    u64::from_ne_bytes([0x01, 0xE0, 0x01, 0xE0, 0x01, 0xF1, 0x01, 0xF1]),
-    u64::from_ne_bytes([0xE0, 0x01, 0xE0, 0x01, 0xF1, 0x01, 0xF1, 0x01]),
-    u64::from_ne_bytes([0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE]),
-    u64::from_ne_bytes([0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01]),
-    u64::from_ne_bytes([0x1F, 0xE0, 0x1F, 0xE0, 0x0E, 0xF1, 0x0E, 0xF1]),
-    u64::from_ne_bytes([0xE0, 0x1F, 0xE0, 0x1F, 0xF1, 0x0E, 0xF1, 0x0E]),
-    u64::from_ne_bytes([0x1F, 0xFE, 0x1F, 0xFE, 0x0E, 0xFE, 0x0E, 0xFE]),
-    u64::from_ne_bytes([0xFE, 0x1F, 0xFE, 0x1F, 0xFE, 0x0E, 0xFE, 0x0E]),
-    u64::from_ne_bytes([0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1, 0xFE]),
-    u64::from_ne_bytes([0xFE, 0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1]),
-    u64::from_ne_bytes([0x01, 0x01, 0x1F, 0x1F, 0x01, 0x01, 0x0E, 0x0E]),
-    u64::from_ne_bytes([0x1F, 0x1F, 0x01, 0x01, 0x0E, 0x0E, 0x01, 0x01]),
-    u64::from_ne_bytes([0xE0, 0xE0, 0x1F, 0x1F, 0xF1, 0xF1, 0x0E, 0x0E]),
-    u64::from_ne_bytes([0x01, 0x01, 0xE0, 0xE0, 0x01, 0x01, 0xF1, 0xF1]),
-    u64::from_ne_bytes([0x1F, 0x1F, 0xE0, 0xE0, 0x0E, 0x0E, 0xF1, 0xF1]),
-    u64::from_ne_bytes([0xE0, 0xE0, 0xFE, 0xFE, 0xF1, 0xF1, 0xFE, 0xFE]),
-    u64::from_ne_bytes([0x01, 0x01, 0xFE, 0xFE, 0x01, 0x01, 0xFE, 0xFE]),
-    u64::from_ne_bytes([0x1F, 0x1F, 0xFE, 0xFE, 0x0E, 0x0E, 0xFE, 0xFE]),
-    u64::from_ne_bytes([0xE0, 0xFE, 0x01, 0x1F, 0xF1, 0xFE, 0x01, 0x0E]),
-    u64::from_ne_bytes([0x01, 0x1F, 0x1F, 0x01, 0x01, 0x0E, 0x0E, 0x01]),
-    u64::from_ne_bytes([0x1F, 0xE0, 0x01, 0xFE, 0x0E, 0xF1, 0x01, 0xFE]),
-    u64::from_ne_bytes([0xE0, 0xFE, 0x1F, 0x01, 0xF1, 0xFE, 0x0E, 0x01]),
-    u64::from_ne_bytes([0x01, 0x1F, 0xE0, 0xFE, 0x01, 0x0E, 0xF1, 0xFE]),
-    u64::from_ne_bytes([0x1F, 0xE0, 0xE0, 0x1F, 0x0E, 0xF1, 0xF1, 0x0E]),
-    u64::from_ne_bytes([0xE0, 0xFE, 0xFE, 0xE0, 0xF1, 0xFE, 0xFE, 0xF1]),
-    u64::from_ne_bytes([0x01, 0x1F, 0xFE, 0xE0, 0x01, 0x0E, 0xFE, 0xF1]),
-    u64::from_ne_bytes([0x1F, 0xE0, 0xFE, 0x01, 0x0E, 0xF1, 0xFE, 0x01]),
-    u64::from_ne_bytes([0xFE, 0x01, 0x01, 0xFE, 0xFE, 0x01, 0x01, 0xFE]),
-    u64::from_ne_bytes([0x01, 0xE0, 0x1F, 0xFE, 0x01, 0xF1, 0x0E, 0xFE]),
-    u64::from_ne_bytes([0x1F, 0xFE, 0x01, 0xE0, 0x0E, 0xFE, 0x01, 0xF1]),
-    u64::from_ne_bytes([0xFE, 0x01, 0x1F, 0xE0, 0xFE, 0x01, 0x0E, 0xF1]),
-    u64::from_ne_bytes([0xFE, 0x01, 0xE0, 0x1F, 0xFE, 0x01, 0xF1, 0x0E]),
-    u64::from_ne_bytes([0x1F, 0xFE, 0xE0, 0x01, 0x0E, 0xFE, 0xF1, 0x01]),
-    u64::from_ne_bytes([0xFE, 0x1F, 0x01, 0xE0, 0xFE, 0x0E, 0x01, 0xF1]),
-    u64::from_ne_bytes([0x01, 0xE0, 0xE0, 0x01, 0x01, 0xF1, 0xF1, 0x01]),
-    u64::from_ne_bytes([0x1F, 0xFE, 0xFE, 0x1F, 0x0E, 0xFE, 0xFE, 0x0E]),
-    u64::from_ne_bytes([0xFE, 0x1F, 0xE0, 0x01, 0xFE, 0x0E, 0xF1, 0x01]),
-    u64::from_ne_bytes([0x01, 0xE0, 0xFE, 0x1F, 0x01, 0xF1, 0xFE, 0x0E]),
-    u64::from_ne_bytes([0xE0, 0x01, 0x01, 0xE0, 0xF1, 0x01, 0x01, 0xF1]),
-    u64::from_ne_bytes([0xFE, 0x1F, 0x1F, 0xFE, 0xFE, 0x0E, 0x0E, 0xFE]),
-    u64::from_ne_bytes([0x01, 0xFE, 0x1F, 0xE0, 0x01, 0xFE, 0x0E, 0xF1]),
-    u64::from_ne_bytes([0xE0, 0x01, 0x1F, 0xFE, 0xF1, 0x01, 0x0E, 0xFE]),
-    u64::from_ne_bytes([0xFE, 0xE0, 0x01, 0x1F, 0xFE, 0xF1, 0x01, 0x0E]),
-    u64::from_ne_bytes([0x01, 0xFE, 0xE0, 0x1F, 0x01, 0xFE, 0xF1, 0x0E]),
-    u64::from_ne_bytes([0xE0, 0x01, 0xFE, 0x1F, 0xF1, 0x01, 0xFE, 0x0E]),
-    u64::from_ne_bytes([0xFE, 0xE0, 0x1F, 0x01, 0xFE, 0xF1, 0x0E, 0x01]),
-    u64::from_ne_bytes([0x01, 0xFE, 0xFE, 0x01, 0x01, 0xFE, 0xFE, 0x01]),
-    u64::from_ne_bytes([0xE0, 0x1F, 0x01, 0xFE, 0xF1, 0x0E, 0x01, 0xFE]),
-    u64::from_ne_bytes([0xFE, 0xE0, 0xE0, 0xFE, 0xFE, 0xF1, 0xF1, 0xFE]),
-    u64::from_ne_bytes([0x1F, 0x01, 0x01, 0x1F, 0x0E, 0x01, 0x01, 0x0E]),
-    u64::from_ne_bytes([0xE0, 0x1F, 0x1F, 0xE0, 0xF1, 0x0E, 0x0E, 0xF1]),
-    u64::from_ne_bytes([0xFE, 0xFE, 0x01, 0x01, 0xFE, 0xFE, 0x01, 0x01]),
-    u64::from_ne_bytes([0x1F, 0x01, 0xE0, 0xFE, 0x0E, 0x01, 0xF1, 0xFE]),
-    u64::from_ne_bytes([0xE0, 0x1F, 0xFE, 0x01, 0xF1, 0x0E, 0xFE, 0x01]),
-    u64::from_ne_bytes([0xFE, 0xFE, 0x1F, 0x1F, 0xFE, 0xFE, 0x0E, 0x0E]),
-    u64::from_ne_bytes([0x1F, 0x01, 0xFE, 0xE0, 0x0E, 0x01, 0xFE, 0xF1]),
-    u64::from_ne_bytes([0xE0, 0xE0, 0x01, 0x01, 0xF1, 0xF1, 0x01, 0x01]),
-    u64::from_ne_bytes([0xFE, 0xFE, 0xE0, 0xE0, 0xFE, 0xFE, 0xF1, 0xF1]),
+macro_rules! as_ne_u64 {
+    [$($key:expr,)*] => {
+        [$(u64::from_ne_bytes($key),)*]
+    };
+}
+
+pub(crate) static WEAK_KEYS: &[u64; 64] = &as_ne_u64![
+    [0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01],
+    [0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE],
+    [0xE0, 0xE0, 0xE0, 0xE0, 0xF1, 0xF1, 0xF1, 0xF1],
+    [0x1F, 0x1F, 0x1F, 0x1F, 0x0E, 0x0E, 0x0E, 0x0E],
+    [0x01, 0x1F, 0x01, 0x1F, 0x01, 0x0E, 0x01, 0x0E],
+    [0x1F, 0x01, 0x1F, 0x01, 0x0E, 0x01, 0x0E, 0x01],
+    [0x01, 0xE0, 0x01, 0xE0, 0x01, 0xF1, 0x01, 0xF1],
+    [0xE0, 0x01, 0xE0, 0x01, 0xF1, 0x01, 0xF1, 0x01],
+    [0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE],
+    [0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01],
+    [0x1F, 0xE0, 0x1F, 0xE0, 0x0E, 0xF1, 0x0E, 0xF1],
+    [0xE0, 0x1F, 0xE0, 0x1F, 0xF1, 0x0E, 0xF1, 0x0E],
+    [0x1F, 0xFE, 0x1F, 0xFE, 0x0E, 0xFE, 0x0E, 0xFE],
+    [0xFE, 0x1F, 0xFE, 0x1F, 0xFE, 0x0E, 0xFE, 0x0E],
+    [0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1, 0xFE],
+    [0xFE, 0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1],
+    [0x01, 0x01, 0x1F, 0x1F, 0x01, 0x01, 0x0E, 0x0E],
+    [0x1F, 0x1F, 0x01, 0x01, 0x0E, 0x0E, 0x01, 0x01],
+    [0xE0, 0xE0, 0x1F, 0x1F, 0xF1, 0xF1, 0x0E, 0x0E],
+    [0x01, 0x01, 0xE0, 0xE0, 0x01, 0x01, 0xF1, 0xF1],
+    [0x1F, 0x1F, 0xE0, 0xE0, 0x0E, 0x0E, 0xF1, 0xF1],
+    [0xE0, 0xE0, 0xFE, 0xFE, 0xF1, 0xF1, 0xFE, 0xFE],
+    [0x01, 0x01, 0xFE, 0xFE, 0x01, 0x01, 0xFE, 0xFE],
+    [0x1F, 0x1F, 0xFE, 0xFE, 0x0E, 0x0E, 0xFE, 0xFE],
+    [0xE0, 0xFE, 0x01, 0x1F, 0xF1, 0xFE, 0x01, 0x0E],
+    [0x01, 0x1F, 0x1F, 0x01, 0x01, 0x0E, 0x0E, 0x01],
+    [0x1F, 0xE0, 0x01, 0xFE, 0x0E, 0xF1, 0x01, 0xFE],
+    [0xE0, 0xFE, 0x1F, 0x01, 0xF1, 0xFE, 0x0E, 0x01],
+    [0x01, 0x1F, 0xE0, 0xFE, 0x01, 0x0E, 0xF1, 0xFE],
+    [0x1F, 0xE0, 0xE0, 0x1F, 0x0E, 0xF1, 0xF1, 0x0E],
+    [0xE0, 0xFE, 0xFE, 0xE0, 0xF1, 0xFE, 0xFE, 0xF1],
+    [0x01, 0x1F, 0xFE, 0xE0, 0x01, 0x0E, 0xFE, 0xF1],
+    [0x1F, 0xE0, 0xFE, 0x01, 0x0E, 0xF1, 0xFE, 0x01],
+    [0xFE, 0x01, 0x01, 0xFE, 0xFE, 0x01, 0x01, 0xFE],
+    [0x01, 0xE0, 0x1F, 0xFE, 0x01, 0xF1, 0x0E, 0xFE],
+    [0x1F, 0xFE, 0x01, 0xE0, 0x0E, 0xFE, 0x01, 0xF1],
+    [0xFE, 0x01, 0x1F, 0xE0, 0xFE, 0x01, 0x0E, 0xF1],
+    [0xFE, 0x01, 0xE0, 0x1F, 0xFE, 0x01, 0xF1, 0x0E],
+    [0x1F, 0xFE, 0xE0, 0x01, 0x0E, 0xFE, 0xF1, 0x01],
+    [0xFE, 0x1F, 0x01, 0xE0, 0xFE, 0x0E, 0x01, 0xF1],
+    [0x01, 0xE0, 0xE0, 0x01, 0x01, 0xF1, 0xF1, 0x01],
+    [0x1F, 0xFE, 0xFE, 0x1F, 0x0E, 0xFE, 0xFE, 0x0E],
+    [0xFE, 0x1F, 0xE0, 0x01, 0xFE, 0x0E, 0xF1, 0x01],
+    [0x01, 0xE0, 0xFE, 0x1F, 0x01, 0xF1, 0xFE, 0x0E],
+    [0xE0, 0x01, 0x01, 0xE0, 0xF1, 0x01, 0x01, 0xF1],
+    [0xFE, 0x1F, 0x1F, 0xFE, 0xFE, 0x0E, 0x0E, 0xFE],
+    [0x01, 0xFE, 0x1F, 0xE0, 0x01, 0xFE, 0x0E, 0xF1],
+    [0xE0, 0x01, 0x1F, 0xFE, 0xF1, 0x01, 0x0E, 0xFE],
+    [0xFE, 0xE0, 0x01, 0x1F, 0xFE, 0xF1, 0x01, 0x0E],
+    [0x01, 0xFE, 0xE0, 0x1F, 0x01, 0xFE, 0xF1, 0x0E],
+    [0xE0, 0x01, 0xFE, 0x1F, 0xF1, 0x01, 0xFE, 0x0E],
+    [0xFE, 0xE0, 0x1F, 0x01, 0xFE, 0xF1, 0x0E, 0x01],
+    [0x01, 0xFE, 0xFE, 0x01, 0x01, 0xFE, 0xFE, 0x01],
+    [0xE0, 0x1F, 0x01, 0xFE, 0xF1, 0x0E, 0x01, 0xFE],
+    [0xFE, 0xE0, 0xE0, 0xFE, 0xFE, 0xF1, 0xF1, 0xFE],
+    [0x1F, 0x01, 0x01, 0x1F, 0x0E, 0x01, 0x01, 0x0E],
+    [0xE0, 0x1F, 0x1F, 0xE0, 0xF1, 0x0E, 0x0E, 0xF1],
+    [0xFE, 0xFE, 0x01, 0x01, 0xFE, 0xFE, 0x01, 0x01],
+    [0x1F, 0x01, 0xE0, 0xFE, 0x0E, 0x01, 0xF1, 0xFE],
+    [0xE0, 0x1F, 0xFE, 0x01, 0xF1, 0x0E, 0xFE, 0x01],
+    [0xFE, 0xFE, 0x1F, 0x1F, 0xFE, 0xFE, 0x0E, 0x0E],
+    [0x1F, 0x01, 0xFE, 0xE0, 0x0E, 0x01, 0xFE, 0xF1],
+    [0xE0, 0xE0, 0x01, 0x01, 0xF1, 0xF1, 0x01, 0x01],
+    [0xFE, 0xFE, 0xE0, 0xE0, 0xFE, 0xFE, 0xF1, 0xF1],
 ];