[PATCH aurweb] Allow FIDO/U2F SSH security keys

[Steven Guikal]

These were added in OpenSSH bersion 8.2[1].

Fixes #36

[1]: https://www.openssh.com/txt/release-8.2
---

Just a heads up that I haven't tested this and aren't sure if the keys
are used anywhere else that may be affected (though a grep makes me
think they aren't).

 web/lib/acctfuncs.inc.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/web/lib/acctfuncs.inc.php b/web/lib/acctfuncs.inc.php
index df016c6d..efc08331 100644
--- a/web/lib/acctfuncs.inc.php
+++ b/web/lib/acctfuncs.inc.php
@@ -877,7 +877,8 @@ function valid_pgp_fingerprint($fingerprint) {
 function valid_ssh_pubkey($pubkey) {
 	$valid_prefixes = array(
 		"ssh-rsa", "ssh-dss", "ecdsa-sha2-nistp256",
-		"ecdsa-sha2-nistp384", "ecdsa-sha2-nistp521", "ssh-ed25519"
+		"ecdsa-sha2-nistp384", "ecdsa-sha2-nistp521", "ssh-ed25519",
+		"sk-ssh-ecdsa at openssh.com", "sk-ssh-ed25519 at openssh.com"
 	);
 
 	$has_valid_prefix = false;
-- 
2.32.0