--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libtomcrypt/src/pk/rsa/rsa_get_size.c	Fri Feb 09 21:44:05 2018 +0800
@@ -0,0 +1,40 @@
+/* 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.
+ */
+#include "tomcrypt.h"
+
+/**
+  @file rsa_get_size.c
+  Retrieve the size of an RSA key, Steffen Jaeckel.
+*/
+
+#ifdef LTC_MRSA
+
+/**
+  Retrieve the size in bytes of an RSA key.
+  @param key      The RSA key
+  @return The size in bytes of the RSA key or INT_MAX on error.
+*/
+int rsa_get_size(rsa_key *key)
+{
+  int ret = INT_MAX;
+  LTC_ARGCHK(key != NULL);
+
+  if (key)
+  {
+    ret = mp_unsigned_bin_size(key->N);
+  } /* if */
+
+  return ret;
+}
+
+#endif
+
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */