Fix issue #230

Author: recmo

src/aliases.rs

@@ -50,7 +50,7 @@ macro_rules! alias {
 
 alias! {
     U160 B160 (160, 3);
-    U192 B192 (256, 3);
+    U192 B192 (192, 3);
     U256 B256 (256, 4);
     U320 B320 (320, 5);
     U384 B384 (384, 6);