Code improved for less memory

[proxmark3-svn] / client / loclass / cipher.c

diff --git a/client/loclass/cipher.c b/client/loclass/cipher.c
index a701da31934164630e4df7f80605149a449c3dbd..3b146b109b520fc05eec44c4d06aaffdfdee2205 100644 (file)
--- a/client/loclass/cipher.c
+++ b/client/loclass/cipher.c
@@ -22,7 +22,7 @@
  *
  * This is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as published
  *
  * This is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as published

- * by the Free Software Foundation.
+ * by the Free Software Foundation, or, at your option, any later version. 

  *
  * This file is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  *
  * This file is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of


@@ -33,7 +33,6 @@
  * along with loclass.  If not, see <http://www.gnu.org/licenses/>.
  * 
  * 
  * along with loclass.  If not, see <http://www.gnu.org/licenses/>.
  * 
  * 

- * 

  ****************************************************************************/
 
 
  ****************************************************************************/
 
 


@@ -114,9 +113,9 @@ uint8_t _select(bool x, bool y, uint8_t r)
        bool r6 = r >> 1 & 0x1;
        bool r7 = r & 0x1;
 
        bool r6 = r >> 1 & 0x1;
        bool r7 = r & 0x1;
 

-       bool z0 = (r0 & r2) ^ (r1 & ~r3) ^ (r2 | r4);
+       bool z0 = (r0 & r2) ^ (r1 & !r3) ^ (r2 | r4);

        bool z1 = (r0 | r2) ^ ( r5 | r7) ^ r1 ^ r6 ^ x ^ y;
        bool z1 = (r0 | r2) ^ ( r5 | r7) ^ r1 ^ r6 ^ x ^ y;

-       bool z2 = (r3 & ~r5) ^ (r4 & r6 ) ^ r7 ^ x;
+       bool z2 = (r3 & !r5) ^ (r4 & r6 ) ^ r7 ^ x;

 
        // The three bitz z0.. z1 are packed into a uint8_t:
        // 00000ZZZ
 
        // The three bitz z0.. z1 are packed into a uint8_t:
        // 00000ZZZ