--- a/ecdsa.h	Sun Apr 14 00:50:03 2013 +0800
+++ b/ecdsa.h	Sun Apr 28 23:17:43 2013 +0800
@@ -4,6 +4,16 @@
 #include "includes.h"
 #include "buffer.h"
 
+#ifdef DROPBEAR_ECC_256
+#define ECDSA_DEFAULT_SIZE 256
+#elif DROPBEAR_ECC_384
+#define ECDSA_DEFAULT_SIZE 384
+#elif DROPBEAR_ECC_521
+#define ECDSA_DEFAULT_SIZE 521
+#else
+#define ECDSA_DEFAULT_SIZE 0
+#endif
+
 ecc_key *gen_ecdsa_priv_key(unsigned int bit_size);
 ecc_key *buf_get_ecdsa_pub_key(buffer* buf);
 ecc_key *buf_get_ecdsa_priv_key(buffer *buf);