--- a/default_options.h.in	Sat Jun 24 22:37:14 2017 +0800
+++ b/default_options.h.in	Sat Jun 24 23:32:25 2017 +0800
@@ -10,7 +10,7 @@
 used if it exists. Options defined there will override any options in this
 file (#ifndef guards added by ifndef_wrapper.sh).
 
-Options can also be defined with -DDROPBEAR_XXX Makefile CFLAGS
+Options can also be defined with -DDROPBEAR_XXX in Makefile CFLAGS
 
 IMPORTANT: Many options will require "make clean" after changes */
 
@@ -130,6 +130,11 @@
  * on x86-64 */
 #define DROPBEAR_ECDSA 1
 
+/* RSA must be >=1024 */
+#define DROPBEAR_DEFAULT_RSA_SIZE 2048
+/* DSS is always 1024 */
+/* ECDSA defaults to largest size configured, usually 521 */
+
 /* Add runtime flag "-R" to generate hostkeys as-needed when the first 
    connection using that key type occurs.
    This avoids the need to otherwise run "dropbearkey" and avoids some problems