New key size interface. Use secure arena for memory allocation.

diff --git a/rc5.c b/rc5.c
index 5d03be7..a1cae70 100644 (file)
--- a/rc5.c
+++ b/rc5.c
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: rc5.c,v 1.1 1999/09/03 08:41:12 mdw Exp $
+ * $Id: rc5.c,v 1.2 2000/06/17 11:56:00 mdw Exp $
  *
  * The RC5-32/12 block cipher
  *
@@ -30,6 +30,9 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: rc5.c,v $
+ * Revision 1.2  2000/06/17 11:56:00  mdw
+ * New key size interface.  Use secure arena for memory allocation.
+ *
  * Revision 1.1  1999/09/03 08:41:12  mdw
  * Initial import.
  *
@@ -44,12 +47,16 @@
 #include <mLib/alloc.h>
 #include <mLib/bits.h>
 
+#include "arena.h"
 #include "blkc.h"
+#include "gcipher.h"
 #include "rc5.h"
 
-/*----- Internal magical constants ----------------------------------------*/
+/*----- Global variables --------------------------------------------------*/
 
-#define RC5_ROUNDS 12
+const octet rc5_keysz[] = { KSZ_RANGE, RC5_KEYSZ, 1, 255, 1 };
+
+/*----- Internal magical constants ----------------------------------------*/
 
 #define T ((RC5_ROUNDS + 1) * 2)
 #define P 0xb7e15163
@@ -78,7 +85,7 @@ void rc5_init(rc5_ctx *k, const void *sbuf, size_t sz)
    * This is slightly unfortunately defined.
    */
 
-  assert(((void)"RC5 does not support zero-length keys", sz != 0));
+  KSZ_ASSERT(rc5, sz);
 
   {
     int i;
@@ -87,7 +94,7 @@ void rc5_init(rc5_ctx *k, const void *sbuf, size_t sz)
     /* --- Create the buffer --- */
 
     w = (sz + 3) / 4;
-    l = xmalloc(w * sizeof(uint32));
+    l = XS_ALLOC(w * sizeof(uint32));
 
     /* --- Extract the key material --- */
 
@@ -137,7 +144,8 @@ void rc5_init(rc5_ctx *k, const void *sbuf, size_t sz)
     }
   }
 
-  free(l);
+  memset(l, 0, w * sizeof(uint32));
+  XS_FREE(l);
 }
 
 /* --- @EROUND@, @DROUND@ --- */