Author: Daniel Baumann <daniel.baumann@progress-linux.org>
Description: Setting default ECDSA size in ssh-keygen to 521.

diff -Naurp openssh.orig/ssh-keygen.1 openssh/ssh-keygen.1
--- openssh.orig/ssh-keygen.1
+++ openssh/ssh-keygen.1
@@ -277,7 +277,7 @@ For ECDSA keys, the
 flag determines the key length by selecting from one of three elliptic
 curve sizes: 256, 384 or 521 bits.
 Attempting to use bit lengths other than these three values for ECDSA keys
-will fail.
+will fail and the default is 521 bits.
 ECDSA-SK, Ed25519 and Ed25519-SK keys have a fixed length and the
 .Fl b
 flag will be ignored.
diff -Naurp openssh.orig/ssh-keygen.c openssh/ssh-keygen.c
--- openssh.orig/ssh-keygen.c
+++ openssh/ssh-keygen.c
@@ -81,7 +81,7 @@
  */
 #define DEFAULT_BITS		4096
 #define DEFAULT_BITS_DSA	1024
-#define DEFAULT_BITS_ECDSA	256
+#define DEFAULT_BITS_ECDSA	521
 
 static int quiet = 0;