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-rw-r--r--regress/multipubkey.sh75
1 files changed, 75 insertions, 0 deletions
diff --git a/regress/multipubkey.sh b/regress/multipubkey.sh
new file mode 100644
index 0000000..8cdda1a
--- /dev/null
+++ b/regress/multipubkey.sh
@@ -0,0 +1,75 @@
+# $OpenBSD: multipubkey.sh,v 1.4 2021/06/07 01:16:34 djm Exp $
+# Placed in the Public Domain.
+
+tid="multiple pubkey"
+
+rm -f $OBJ/authorized_keys_$USER $OBJ/user_ca_key* $OBJ/user_key*
+rm -f $OBJ/authorized_principals_$USER $OBJ/cert_user_key*
+
+mv $OBJ/sshd_proxy $OBJ/sshd_proxy.orig
+mv $OBJ/ssh_proxy $OBJ/ssh_proxy.orig
+
+# Create a CA key
+${SSHKEYGEN} -q -N '' -t ed25519 -f $OBJ/user_ca_key ||\
+ fatal "ssh-keygen failed"
+
+# Make some keys and a certificate.
+${SSHKEYGEN} -q -N '' -t ed25519 -f $OBJ/user_key1 || \
+ fatal "ssh-keygen failed"
+${SSHKEYGEN} -q -N '' -t ed25519 -f $OBJ/user_key2 || \
+ fatal "ssh-keygen failed"
+${SSHKEYGEN} -q -s $OBJ/user_ca_key -I "regress user key for $USER" \
+ -z $$ -n ${USER},mekmitasdigoat $OBJ/user_key1 ||
+ fail "couldn't sign user_key1"
+# Copy the private key alongside the cert to allow better control of when
+# it is offered.
+mv $OBJ/user_key1-cert.pub $OBJ/cert_user_key1.pub
+cp -p $OBJ/user_key1 $OBJ/cert_user_key1
+
+grep -v IdentityFile $OBJ/ssh_proxy.orig > $OBJ/ssh_proxy
+
+opts="-oProtocol=2 -F $OBJ/ssh_proxy -oIdentitiesOnly=yes"
+opts="$opts -i $OBJ/cert_user_key1 -i $OBJ/user_key1 -i $OBJ/user_key2"
+
+for match in no yes ; do
+ (
+ cat $OBJ/sshd_proxy.orig
+ echo "Protocol 2"
+ echo "TrustedUserCAKeys $OBJ/user_ca_key.pub"
+ echo "AuthorizedPrincipalsFile $OBJ/authorized_principals_%u"
+ ) > $OBJ/sshd_proxy
+ if test "$match" = "yes" ; then
+ echo "AuthenticationMethods none" >> $OBJ/sshd_proxy
+ echo "PubkeyAuthentication no" >> $OBJ/sshd_proxy
+ echo "Match all" >> $OBJ/sshd_proxy
+ echo "PubkeyAuthentication yes" >> $OBJ/sshd_proxy
+ fi
+ echo "AuthenticationMethods publickey,publickey" >> $OBJ/sshd_proxy
+
+ # Single key should fail.
+ trace "match $match single key"
+ rm -f $OBJ/authorized_principals_$USER
+ cat $OBJ/user_key1.pub > $OBJ/authorized_keys_$USER
+ ${SSH} $opts proxy true && fail "ssh succeeded with key"
+
+ # Single key with same-public cert should fail.
+ trace "match $match pubkey + identical cert"
+ echo mekmitasdigoat > $OBJ/authorized_principals_$USER
+ cat $OBJ/user_key1.pub > $OBJ/authorized_keys_$USER
+ ${SSH} $opts proxy true && fail "ssh succeeded with key+cert"
+
+ # Multiple plain keys should succeed.
+ trace "match $match multiple public"
+ rm -f $OBJ/authorized_principals_$USER
+ cat $OBJ/user_key1.pub $OBJ/user_key2.pub > \
+ $OBJ/authorized_keys_$USER
+ ${SSH} $opts proxy true || fail "ssh failed with multiple keys"
+ # Cert and different key should succeed
+
+ # Key and different-public cert should succeed.
+ trace "match $match pubkey + different cert"
+ echo mekmitasdigoat > $OBJ/authorized_principals_$USER
+ cat $OBJ/user_key2.pub > $OBJ/authorized_keys_$USER
+ ${SSH} $opts proxy true || fail "ssh failed with key/cert"
+done
+