diff libtommath/bn_mp_fwrite.c @ 284:eed26cff980b

propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 6c790cad5a7fa866ad062cb3a0c279f7ba788583) to branch 'au.asn.ucc.matt.dropbear' (head fff0894a0399405a9410ea1c6d118f342cf2aa64)
author Matt Johnston <matt@ucc.asn.au>
date Wed, 08 Mar 2006 13:23:49 +0000
parents
children 5ff8218bcee9
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libtommath/bn_mp_fwrite.c	Wed Mar 08 13:23:49 2006 +0000
@@ -0,0 +1,48 @@
+#include <tommath.h>
+#ifdef BN_MP_FWRITE_C
+/* LibTomMath, multiple-precision integer library -- Tom St Denis
+ *
+ * LibTomMath is a library that provides multiple-precision
+ * integer arithmetic as well as number theoretic functionality.
+ *
+ * The library was designed directly after the MPI library by
+ * Michael Fromberger but has been written from scratch with
+ * additional optimizations in place.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ *
+ * Tom St Denis, [email protected], http://math.libtomcrypt.org
+ */
+
+int mp_fwrite(mp_int *a, int radix, FILE *stream)
+{
+   char *buf;
+   int err, len, x;
+   
+   if ((err = mp_radix_size(a, radix, &len)) != MP_OKAY) {
+      return err;
+   }
+
+   buf = OPT_CAST(char) XMALLOC (len);
+   if (buf == NULL) {
+      return MP_MEM;
+   }
+   
+   if ((err = mp_toradix(a, buf, radix)) != MP_OKAY) {
+      XFREE (buf);
+      return err;
+   }
+   
+   for (x = 0; x < len; x++) {
+       if (fputc(buf[x], stream) == EOF) {
+          XFREE (buf);
+          return MP_VAL;
+       }
+   }
+   
+   XFREE (buf);
+   return MP_OKAY;
+}
+
+#endif