www.usr.com/support/gpl/USR9107_release.1.4.tar.gz

[bcm963xx.git] / userapps / opensource / sshd / libtommath / bn_mp_init_size.c

diff --git a/userapps/opensource/sshd/libtommath/bn_mp_init_size.c b/userapps/opensource/sshd/libtommath/bn_mp_init_size.c
index 2408c1a..845ce2c 100755 (executable)
--- a/userapps/opensource/sshd/libtommath/bn_mp_init_size.c
+++ b/userapps/opensource/sshd/libtommath/bn_mp_init_size.c
@@ -1,9 +1,11 @@
+#include <tommath.h>
+#ifdef BN_MP_INIT_SIZE_C
 /* LibTomMath, multiple-precision integer library -- Tom St Denis
  *
- * LibTomMath is library that provides for multiple-precision
+ * LibTomMath is a library that provides multiple-precision
  * integer arithmetic as well as number theoretic functionality.
  *
- * The library is designed directly after the MPI library by
+ * The library was designed directly after the MPI library by
  * Michael Fromberger but has been written from scratch with
  * additional optimizations in place.
  *
@@ -12,24 +14,31 @@
  *
  * Tom St Denis, tomstdenis@iahu.ca, http://math.libtomcrypt.org
  */
-#include <tommath.h>
 
-/* init a mp_init and grow it to a given size */
-int
-mp_init_size (mp_int * a, int size)
+/* init an mp_init for a given size */
+int mp_init_size (mp_int * a, int size)
 {
+  int x;
 
   /* pad size so there are always extra digits */
-  size += (MP_PREC * 2) - (size & (MP_PREC - 1));      
+  size += (MP_PREC * 2) - (size % MP_PREC);    
   
   /* alloc mem */
-  a->dp = OPT_CAST calloc (sizeof (mp_digit), size);
+  a->dp = OPT_CAST(mp_digit) XMALLOC (sizeof (mp_digit) * size);
   if (a->dp == NULL) {
     return MP_MEM;
   }
-  a->used = 0;
+
+  /* set the members */
+  a->used  = 0;
   a->alloc = size;
-  a->sign = MP_ZPOS;
+  a->sign  = MP_ZPOS;
+
+  /* zero the digits */
+  for (x = 0; x < size; x++) {
+      a->dp[x] = 0;
+  }
 
   return MP_OKAY;
 }
+#endif