New module 'multiarch'.

[gnulib.git] / lib / arcfour.c

diff --git a/lib/arcfour.c b/lib/arcfour.c
index 61b8511..95f8204 100644 (file)
--- a/lib/arcfour.c
+++ b/lib/arcfour.c
@@ -1,5 +1,6 @@
 /* arcfour.c --- The arcfour stream cipher
- * Copyright (C) 2000, 2001, 2002, 2003, 2005 Free Software Foundation, Inc.
+ * Copyright (C) 2000, 2001, 2002, 2003, 2005, 2006 Free Software
+ * Foundation, Inc.
  *
  * This file is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published
@@ -26,9 +27,7 @@
  *   ISBN 0-471-11709-9. Pages 397 ff.
  */
 
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
 
 #include "arcfour.h"
 
@@ -36,16 +35,16 @@ void
 arcfour_stream (arcfour_context * context, const char *inbuf, char *outbuf,
                size_t length)
 {
-  size_t i = context->idx_i;
-  size_t j = context->idx_j;
+  uint8_t i = context->idx_i;
+  uint8_t j = context->idx_j;
   char *sbox = context->sbox;
 
   for (; length > 0; length--)
     {
       char t;
 
-      i = (i + 1) % ARCFOUR_SBOX_SIZE;
-      j = (j + sbox[i]) % ARCFOUR_SBOX_SIZE;
+      i++;
+      j += sbox[i];
       t = sbox[i];
       sbox[i] = sbox[j];
       sbox[j] = t;