1 # $OpenBSD: multipubkey.sh,v 1.1 2014/12/22 08:06:03 djm Exp $ 2 # Placed in the Public Domain. 3 4 tid="multiple pubkey" 5 6 rm -f $OBJ/authorized_keys_$USER $OBJ/user_ca_key* $OBJ/user_key* 7 rm -f $OBJ/authorized_principals_$USER $OBJ/cert_user_key* 8 9 mv $OBJ/sshd_proxy $OBJ/sshd_proxy.orig 10 mv $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. 26 mv $OBJ/user_key1-cert.pub $OBJ/cert_user_key1.pub 27 cp -p $OBJ/user_key1 $OBJ/cert_user_key1 28 29 grep -v IdentityFile $OBJ/ssh_proxy.orig > $OBJ/ssh_proxy 30 31 opts="-oProtocol=2 -F $OBJ/ssh_proxy -oIdentitiesOnly=yes" 32 opts="$opts -i $OBJ/cert_user_key1 -i $OBJ/user_key1 -i $OBJ/user_key2" 33 34 for 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" 65 done 66 67
