X-Git-Url: https://git.cryptolib.org/?a=blobdiff_plain;f=cast5.c;h=51e9e93823988c42fcaccecfe8e8557ec3834bdd;hb=91bece1f7822ccaae033989525ee08f613de3802;hp=204fe30dcc1d74c593fa9e731f7aa2b3d1c0ec03;hpb=85b05e7b8648750d0077a74898733536e1b0712f;p=avr-crypto-lib.git

diff --git a/cast5.c b/cast5.c
index 204fe30..51e9e93 100644
--- a/cast5.c
+++ b/cast5.c
@@ -1,9 +1,28 @@
+/* cast5.c */
+/*
+    This file is part of the Crypto-avr-lib/microcrypt-lib.
+    Copyright (C) 2008  Daniel Otte (daniel.otte@rub.de)
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
 /* 
  * \file	cast5.c
  * \author	Daniel Otte
- * \date 	26.07.2006
+ * \email       daniel.otte@rub.de
+ * \date 	2006-07-26
  * \par License:
- *  GPL
+ *  GPLv3 or later
  * \brief Implementation of the CAST5 (aka CAST-128) cipher algorithm as described in RFC 2144
  * 
  */
@@ -213,8 +232,10 @@ uint32_t cast5_f2(uint32_t d, uint32_t m, uint8_t r){
 	return (((ia - ib) + ic) ^ id);
 #else
 	
-	return (((pgm_read_dword(&s1[((uint8_t*)&t)[IA]] ) - pgm_read_dword(&s2[((uint8_t*)&t)[IB]] )) 
-		+ pgm_read_dword(&s3[((uint8_t*)&t)[IC]] )) ^ pgm_read_dword(&s4[((uint8_t*)&t)[ID]]));
+	return (((pgm_read_dword(&s1[((uint8_t*)&t)[IA]]) 
+	        - pgm_read_dword(&s2[((uint8_t*)&t)[IB]]) ) 
+		    + pgm_read_dword(&s3[((uint8_t*)&t)[IC]]) ) 
+		    ^ pgm_read_dword(&s4[((uint8_t*)&t)[ID]]) );
 
 #endif
 }