multipubkey.sh revision 323134 
1#	$OpenBSD: multipubkey.sh,v 1.1 2014/12/22 08:06:03 djm Exp $
2#	Placed in the Public Domain.
3
4tid="multiple pubkey"
5
6rm -f $OBJ/authorized_keys_$USER $OBJ/user_ca_key* $OBJ/user_key*
7rm -f $OBJ/authorized_principals_$USER $OBJ/cert_user_key*
8
9mv $OBJ/sshd_proxy $OBJ/sshd_proxy.orig
10mv $OBJ/ssh_proxy $OBJ/ssh_proxy.orig
11
12# Create a CA key
13${SSHKEYGEN} -q -N '' -t ed25519  -f $OBJ/user_ca_key ||\
14	fatal "ssh-keygen failed"
15
16# Make some keys and a certificate.
17${SSHKEYGEN} -q -N '' -t ed25519 -f $OBJ/user_key1 || \
18	fatal "ssh-keygen failed"
19${SSHKEYGEN} -q -N '' -t ed25519 -f $OBJ/user_key2 || \
20	fatal "ssh-keygen failed"
21${SSHKEYGEN} -q -s $OBJ/user_ca_key -I "regress user key for $USER" \
22	-z $$ -n ${USER},mekmitasdigoat $OBJ/user_key1 ||
23		fail "couldn't sign user_key1"
24# Copy the private key alongside the cert to allow better control of when
25# it is offered.
26mv $OBJ/user_key1-cert.pub $OBJ/cert_user_key1.pub
27cp -p $OBJ/user_key1 $OBJ/cert_user_key1
28
29grep -v IdentityFile $OBJ/ssh_proxy.orig > $OBJ/ssh_proxy
30
31opts="-oProtocol=2 -F $OBJ/ssh_proxy -oIdentitiesOnly=yes"
32opts="$opts -i $OBJ/cert_user_key1 -i $OBJ/user_key1 -i $OBJ/user_key2"
33
34for privsep in no yes; do
35	(
36		grep -v "Protocol"  $OBJ/sshd_proxy.orig
37		echo "Protocol 2"
38		echo "UsePrivilegeSeparation $privsep"
39		echo "AuthenticationMethods publickey,publickey"
40		echo "TrustedUserCAKeys $OBJ/user_ca_key.pub"
41		echo "AuthorizedPrincipalsFile $OBJ/authorized_principals_%u"
42 	) > $OBJ/sshd_proxy
43
44	# Single key should fail.
45	rm -f $OBJ/authorized_principals_$USER
46	cat $OBJ/user_key1.pub > $OBJ/authorized_keys_$USER
47	${SSH} $opts proxy true && fail "ssh succeeded with key"
48
49	# Single key with same-public cert should fail.
50	echo mekmitasdigoat > $OBJ/authorized_principals_$USER
51	cat $OBJ/user_key1.pub > $OBJ/authorized_keys_$USER
52	${SSH} $opts proxy true && fail "ssh succeeded with key+cert"
53
54	# Multiple plain keys should succeed.
55	rm -f $OBJ/authorized_principals_$USER
56	cat $OBJ/user_key1.pub $OBJ/user_key2.pub > \
57	    $OBJ/authorized_keys_$USER
58	${SSH} $opts proxy true || fail "ssh failed with multiple keys"
59	# Cert and different key should succeed
60
61	# Key and different-public cert should succeed.
62	echo mekmitasdigoat > $OBJ/authorized_principals_$USER
63	cat $OBJ/user_key2.pub > $OBJ/authorized_keys_$USER
64	${SSH} $opts proxy true || fail "ssh failed with key/cert"
65done
66
67