1264377Sdes# $OpenBSD: cert-hostkey.sh,v 1.9 2014/01/26 10:22:10 djm Exp $ 2204861Sdes# Placed in the Public Domain. 3204861Sdes 4204861Sdestid="certified host keys" 5204861Sdes 6204861Sdesrm -f $OBJ/known_hosts-cert $OBJ/host_ca_key* $OBJ/cert_host_key* 7204861Sdescp $OBJ/sshd_proxy $OBJ/sshd_proxy_bak 8204861Sdes 9204861SdesHOSTS='localhost-with-alias,127.0.0.1,::1' 10204861Sdes 11204861Sdes# Create a CA key and add it to known hosts 12204861Sdes${SSHKEYGEN} -q -N '' -t rsa -f $OBJ/host_ca_key ||\ 13204861Sdes fail "ssh-keygen of host_ca_key failed" 14204861Sdes( 15255670Sdes printf '@cert-authority ' 16255670Sdes printf "$HOSTS " 17204861Sdes cat $OBJ/host_ca_key.pub 18204861Sdes) > $OBJ/known_hosts-cert 19204861Sdes 20262566SdesPLAIN_TYPES=`$SSH -Q key-plain | sed 's/^ssh-dss/ssh-dsa/g;s/^ssh-//'` 21262566Sdes 22262566Sdestype_has_legacy() { 23262566Sdes case $1 in 24262566Sdes ed25519*|ecdsa*) return 1 ;; 25262566Sdes esac 26262566Sdes return 0 27262566Sdes} 28262566Sdes 29204861Sdes# Generate and sign host keys 30262566Sdesfor ktype in $PLAIN_TYPES ; do 31204861Sdes verbose "$tid: sign host ${ktype} cert" 32204861Sdes # Generate and sign a host key 33204861Sdes ${SSHKEYGEN} -q -N '' -t ${ktype} \ 34204861Sdes -f $OBJ/cert_host_key_${ktype} || \ 35204861Sdes fail "ssh-keygen of cert_host_key_${ktype} failed" 36204861Sdes ${SSHKEYGEN} -h -q -s $OBJ/host_ca_key \ 37204861Sdes -I "regress host key for $USER" \ 38204861Sdes -n $HOSTS $OBJ/cert_host_key_${ktype} || 39204861Sdes fail "couldn't sign cert_host_key_${ktype}" 40262566Sdes type_has_legacy $ktype || continue 41214979Sdes cp $OBJ/cert_host_key_${ktype} $OBJ/cert_host_key_${ktype}_v00 42214979Sdes cp $OBJ/cert_host_key_${ktype}.pub $OBJ/cert_host_key_${ktype}_v00.pub 43262566Sdes verbose "$tid: sign host ${ktype}_v00 cert" 44214979Sdes ${SSHKEYGEN} -t v00 -h -q -s $OBJ/host_ca_key \ 45214979Sdes -I "regress host key for $USER" \ 46214979Sdes -n $HOSTS $OBJ/cert_host_key_${ktype}_v00 || 47214979Sdes fail "couldn't sign cert_host_key_${ktype}_v00" 48204861Sdesdone 49204861Sdes 50204861Sdes# Basic connect tests 51204861Sdesfor privsep in yes no ; do 52262566Sdes for ktype in $PLAIN_TYPES rsa_v00 dsa_v00; do 53204861Sdes verbose "$tid: host ${ktype} cert connect privsep $privsep" 54204861Sdes ( 55204861Sdes cat $OBJ/sshd_proxy_bak 56204861Sdes echo HostKey $OBJ/cert_host_key_${ktype} 57204861Sdes echo HostCertificate $OBJ/cert_host_key_${ktype}-cert.pub 58204861Sdes echo UsePrivilegeSeparation $privsep 59204861Sdes ) > $OBJ/sshd_proxy 60204861Sdes 61204861Sdes ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \ 62204861Sdes -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \ 63204861Sdes -F $OBJ/ssh_proxy somehost true 64204861Sdes if [ $? -ne 0 ]; then 65204861Sdes fail "ssh cert connect failed" 66204861Sdes fi 67204861Sdes done 68204861Sdesdone 69204861Sdes 70204861Sdes# Revoked certificates with key present 71204861Sdes( 72255670Sdes printf '@cert-authority ' 73255670Sdes printf "$HOSTS " 74204861Sdes cat $OBJ/host_ca_key.pub 75262566Sdes for ktype in $PLAIN_TYPES rsa_v00 dsa_v00; do 76262566Sdes test -f "$OBJ/cert_host_key_${ktype}.pub" || fatal "no pubkey" 77262566Sdes printf "@revoked * `cat $OBJ/cert_host_key_${ktype}.pub`\n" 78262566Sdes done 79204861Sdes) > $OBJ/known_hosts-cert 80204861Sdesfor privsep in yes no ; do 81262566Sdes for ktype in $PLAIN_TYPES rsa_v00 dsa_v00; do 82204861Sdes verbose "$tid: host ${ktype} revoked cert privsep $privsep" 83204861Sdes ( 84204861Sdes cat $OBJ/sshd_proxy_bak 85204861Sdes echo HostKey $OBJ/cert_host_key_${ktype} 86204861Sdes echo HostCertificate $OBJ/cert_host_key_${ktype}-cert.pub 87204861Sdes echo UsePrivilegeSeparation $privsep 88204861Sdes ) > $OBJ/sshd_proxy 89204861Sdes 90204861Sdes ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \ 91204861Sdes -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \ 92204861Sdes -F $OBJ/ssh_proxy somehost true >/dev/null 2>&1 93204861Sdes if [ $? -eq 0 ]; then 94204861Sdes fail "ssh cert connect succeeded unexpectedly" 95204861Sdes fi 96204861Sdes done 97204861Sdesdone 98204861Sdes 99204861Sdes# Revoked CA 100204861Sdes( 101255670Sdes printf '@cert-authority ' 102255670Sdes printf "$HOSTS " 103204861Sdes cat $OBJ/host_ca_key.pub 104255670Sdes printf '@revoked ' 105255670Sdes printf "* " 106204861Sdes cat $OBJ/host_ca_key.pub 107204861Sdes) > $OBJ/known_hosts-cert 108262566Sdesfor ktype in $PLAIN_TYPES rsa_v00 dsa_v00 ; do 109204861Sdes verbose "$tid: host ${ktype} revoked cert" 110204861Sdes ( 111204861Sdes cat $OBJ/sshd_proxy_bak 112204861Sdes echo HostKey $OBJ/cert_host_key_${ktype} 113204861Sdes echo HostCertificate $OBJ/cert_host_key_${ktype}-cert.pub 114204861Sdes ) > $OBJ/sshd_proxy 115204861Sdes ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \ 116204861Sdes -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \ 117204861Sdes -F $OBJ/ssh_proxy somehost true >/dev/null 2>&1 118204861Sdes if [ $? -eq 0 ]; then 119204861Sdes fail "ssh cert connect succeeded unexpectedly" 120204861Sdes fi 121204861Sdesdone 122204861Sdes 123204861Sdes# Create a CA key and add it to known hosts 124204861Sdes( 125255670Sdes printf '@cert-authority ' 126255670Sdes printf "$HOSTS " 127204861Sdes cat $OBJ/host_ca_key.pub 128204861Sdes) > $OBJ/known_hosts-cert 129204861Sdes 130204861Sdestest_one() { 131204861Sdes ident=$1 132204861Sdes result=$2 133204861Sdes sign_opts=$3 134204861Sdes 135214979Sdes for kt in rsa rsa_v00 ; do 136214979Sdes case $kt in 137214979Sdes *_v00) args="-t v00" ;; 138214979Sdes *) args="" ;; 139214979Sdes esac 140204861Sdes 141214979Sdes verbose "$tid: host cert connect $ident $kt expect $result" 142214979Sdes ${SSHKEYGEN} -q -s $OBJ/host_ca_key \ 143214979Sdes -I "regress host key for $USER" \ 144214979Sdes $sign_opts $args \ 145214979Sdes $OBJ/cert_host_key_${kt} || 146214979Sdes fail "couldn't sign cert_host_key_${kt}" 147214979Sdes ( 148214979Sdes cat $OBJ/sshd_proxy_bak 149214979Sdes echo HostKey $OBJ/cert_host_key_${kt} 150214979Sdes echo HostCertificate $OBJ/cert_host_key_${kt}-cert.pub 151214979Sdes ) > $OBJ/sshd_proxy 152214979Sdes 153214979Sdes ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \ 154214979Sdes -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \ 155214979Sdes -F $OBJ/ssh_proxy somehost true >/dev/null 2>&1 156214979Sdes rc=$? 157214979Sdes if [ "x$result" = "xsuccess" ] ; then 158214979Sdes if [ $rc -ne 0 ]; then 159214979Sdes fail "ssh cert connect $ident failed unexpectedly" 160214979Sdes fi 161214979Sdes else 162214979Sdes if [ $rc -eq 0 ]; then 163214979Sdes fail "ssh cert connect $ident succeeded unexpectedly" 164214979Sdes fi 165204861Sdes fi 166214979Sdes done 167204861Sdes} 168204861Sdes 169204861Sdestest_one "user-certificate" failure "-n $HOSTS" 170204861Sdestest_one "empty principals" success "-h" 171204861Sdestest_one "wrong principals" failure "-h -n foo" 172204861Sdestest_one "cert not yet valid" failure "-h -V20200101:20300101" 173204861Sdestest_one "cert expired" failure "-h -V19800101:19900101" 174204861Sdestest_one "cert valid interval" success "-h -V-1w:+2w" 175204861Sdestest_one "cert has constraints" failure "-h -Oforce-command=false" 176204861Sdes 177204861Sdes# Check downgrade of cert to raw key when no CA found 178214979Sdesfor v in v01 v00 ; do 179262566Sdes for ktype in $PLAIN_TYPES ; do 180262566Sdes type_has_legacy $ktype || continue 181214979Sdes rm -f $OBJ/known_hosts-cert $OBJ/cert_host_key* 182214979Sdes verbose "$tid: host ${ktype} ${v} cert downgrade to raw key" 183214979Sdes # Generate and sign a host key 184214979Sdes ${SSHKEYGEN} -q -N '' -t ${ktype} \ 185214979Sdes -f $OBJ/cert_host_key_${ktype} || \ 186214979Sdes fail "ssh-keygen of cert_host_key_${ktype} failed" 187214979Sdes ${SSHKEYGEN} -t ${v} -h -q -s $OBJ/host_ca_key \ 188214979Sdes -I "regress host key for $USER" \ 189214979Sdes -n $HOSTS $OBJ/cert_host_key_${ktype} || 190214979Sdes fail "couldn't sign cert_host_key_${ktype}" 191214979Sdes ( 192255670Sdes printf "$HOSTS " 193214979Sdes cat $OBJ/cert_host_key_${ktype}.pub 194214979Sdes ) > $OBJ/known_hosts-cert 195214979Sdes ( 196214979Sdes cat $OBJ/sshd_proxy_bak 197214979Sdes echo HostKey $OBJ/cert_host_key_${ktype} 198214979Sdes echo HostCertificate $OBJ/cert_host_key_${ktype}-cert.pub 199214979Sdes ) > $OBJ/sshd_proxy 200214979Sdes 201214979Sdes ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \ 202214979Sdes -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \ 203214979Sdes -F $OBJ/ssh_proxy somehost true 204214979Sdes if [ $? -ne 0 ]; then 205214979Sdes fail "ssh cert connect failed" 206214979Sdes fi 207214979Sdes done 208204861Sdesdone 209204861Sdes 210204861Sdes# Wrong certificate 211204861Sdes( 212255670Sdes printf '@cert-authority ' 213255670Sdes printf "$HOSTS " 214204861Sdes cat $OBJ/host_ca_key.pub 215204861Sdes) > $OBJ/known_hosts-cert 216214979Sdesfor v in v01 v00 ; do 217262566Sdes for kt in $PLAIN_TYPES ; do 218262566Sdes type_has_legacy $kt || continue 219214979Sdes rm -f $OBJ/cert_host_key* 220214979Sdes # Self-sign key 221214979Sdes ${SSHKEYGEN} -q -N '' -t ${kt} \ 222214979Sdes -f $OBJ/cert_host_key_${kt} || \ 223214979Sdes fail "ssh-keygen of cert_host_key_${kt} failed" 224214979Sdes ${SSHKEYGEN} -t ${v} -h -q -s $OBJ/cert_host_key_${kt} \ 225214979Sdes -I "regress host key for $USER" \ 226214979Sdes -n $HOSTS $OBJ/cert_host_key_${kt} || 227214979Sdes fail "couldn't sign cert_host_key_${kt}" 228214979Sdes verbose "$tid: host ${kt} connect wrong cert" 229214979Sdes ( 230214979Sdes cat $OBJ/sshd_proxy_bak 231214979Sdes echo HostKey $OBJ/cert_host_key_${kt} 232214979Sdes echo HostCertificate $OBJ/cert_host_key_${kt}-cert.pub 233214979Sdes ) > $OBJ/sshd_proxy 234214979Sdes 235214979Sdes ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \ 236214979Sdes -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \ 237214979Sdes -F $OBJ/ssh_proxy -q somehost true >/dev/null 2>&1 238214979Sdes if [ $? -eq 0 ]; then 239214979Sdes fail "ssh cert connect $ident succeeded unexpectedly" 240214979Sdes fi 241214979Sdes done 242204861Sdesdone 243204861Sdes 244204861Sdesrm -f $OBJ/known_hosts-cert $OBJ/host_ca_key* $OBJ/cert_host_key* 245