diff libtomcrypt/src/pk/ecc/ecc_get_size.c @ 478:d4f32c3443ac dbclient-netcat-alike

propagate from branch 'au.asn.ucc.matt.dropbear' (head f21045c791002d81fc6b8dde6537ea481e513eb2) to branch 'au.asn.ucc.matt.dropbear.dbclient-netcat-alike' (head d1f69334581dc4c35f9ca16aa5355074c9dd315d)
author Matt Johnston <matt@ucc.asn.au>
date Sun, 14 Sep 2008 06:47:51 +0000
parents 0cbe8f6dbf9e
children f849a5ca2efc
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libtomcrypt/src/pk/ecc/ecc_get_size.c	Sun Sep 14 06:47:51 2008 +0000
@@ -0,0 +1,44 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ *
+ * Tom St Denis, [email protected], http://libtomcrypt.com
+ */
+
+/* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b
+ *
+ * All curves taken from NIST recommendation paper of July 1999
+ * Available at http://csrc.nist.gov/cryptval/dss.htm
+ */
+#include "tomcrypt.h"
+
+/**
+  @file ecc_get_size.c
+  ECC Crypto, Tom St Denis
+*/  
+
+#ifdef MECC
+
+/**
+  Get the size of an ECC key
+  @param key    The key to get the size of 
+  @return The size (octets) of the key or INT_MAX on error
+*/
+int ecc_get_size(ecc_key *key)
+{
+   LTC_ARGCHK(key != NULL);
+   if (ltc_ecc_is_valid_idx(key->idx))
+      return key->dp->size;
+   else
+      return INT_MAX; /* large value known to cause it to fail when passed to ecc_make_key() */
+}
+
+#endif
+/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_get_size.c,v $ */
+/* $Revision: 1.4 $ */
+/* $Date: 2006/11/21 00:10:18 $ */
+