Dear all,
Support for using Ed25519 for server and user authentication was
introduced in OpenSSH 6.5. I like the compactness of Ed25519 public
keys.
Perhaps now is a good time to make Ed25519 the default when invoking
ssh-keygen(1) without arguments?
Kind regards,
Job
Index: ssh-keygen.1
===================================================================
RCS file: /cvs/src/usr.bin/ssh/ssh-keygen.1,v
retrieving revision 1.226
diff -u -p -r1.226 ssh-keygen.1
--- ssh-keygen.1 10 Sep 2022 08:50:53 -0000 1.226
+++ ssh-keygen.1 6 Nov 2022 13:31:19 -0000
@@ -185,7 +185,7 @@ The type of key to be generated is speci
option.
If invoked without any arguments,
.Nm
-will generate an RSA key.
+will generate an ed25519 key.
.Pp
.Nm
is also used to generate groups for use in Diffie-Hellman group
Index: ssh-keygen.c
===================================================================
RCS file: /cvs/src/usr.bin/ssh/ssh-keygen.c,v
retrieving revision 1.459
diff -u -p -r1.459 ssh-keygen.c
--- ssh-keygen.c 11 Aug 2022 01:56:51 -0000 1.459
+++ ssh-keygen.c 6 Nov 2022 13:31:21 -0000
@@ -61,12 +61,6 @@
#include "ssh-pkcs11.h"
#endif
-#ifdef WITH_OPENSSL
-# define DEFAULT_KEY_TYPE_NAME "rsa"
-#else
-# define DEFAULT_KEY_TYPE_NAME "ed25519"
-#endif
-
/*
* Default number of bits in the RSA, DSA and ECDSA keys. These value can be
* overridden on the command line.
@@ -252,7 +246,7 @@ ask_filename(struct passwd *pw, const ch
char *name = NULL;
if (key_type_name == NULL)
- name = _PATH_SSH_CLIENT_ID_RSA;
+ name = _PATH_SSH_CLIENT_ID_ED25519;
else {
switch (sshkey_type_from_name(key_type_name)) {
case KEY_DSA_CERT:
@@ -3748,7 +3742,7 @@ main(int argc, char **argv)
}
if (key_type_name == NULL)
- key_type_name = DEFAULT_KEY_TYPE_NAME;
+ key_type_name = "ed25519";
type = sshkey_type_from_name(key_type_name);
type_bits_valid(type, key_type_name, &bits);
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