# $OpenBSD: cert-hostkey.sh,v 1.1 2010/02/26 20:33:21 djm Exp $ # Placed in the Public Domain. tid="certified host keys" rm -f $OBJ/known_hosts-cert $OBJ/host_ca_key* $OBJ/cert_host_key* cp $OBJ/sshd_proxy $OBJ/sshd_proxy_bak HOSTS='localhost-with-alias,127.0.0.1,::1' # Create a CA key and add it to known hosts ${SSHKEYGEN} -q -N '' -t rsa -f $OBJ/host_ca_key ||\ fail "ssh-keygen of host_ca_key failed" ( echon '@cert-authority ' echon "$HOSTS " cat $OBJ/host_ca_key.pub ) > $OBJ/known_hosts-cert # Generate and sign host keys for ktype in rsa dsa ; do verbose "$tid: sign host ${ktype} cert" # Generate and sign a host key ${SSHKEYGEN} -q -N '' -t ${ktype} \ -f $OBJ/cert_host_key_${ktype} || \ fail "ssh-keygen of cert_host_key_${ktype} failed" ${SSHKEYGEN} -h -q -s $OBJ/host_ca_key \ -I "regress host key for $USER" \ -n $HOSTS $OBJ/cert_host_key_${ktype} || fail "couldn't sign cert_host_key_${ktype}" done # Basic connect tests for privsep in yes no ; do for ktype in rsa dsa ; do verbose "$tid: host ${ktype} cert connect privsep $privsep" ( cat $OBJ/sshd_proxy_bak echo HostKey $OBJ/cert_host_key_${ktype} echo HostCertificate $OBJ/cert_host_key_${ktype}-cert.pub echo UsePrivilegeSeparation $privsep ) > $OBJ/sshd_proxy ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \ -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \ -F $OBJ/ssh_proxy somehost true if [ $? -ne 0 ]; then fail "ssh cert connect failed" fi done done test_one() { ident=$1 result=$2 sign_opts=$3 verbose "$tid: test host cert connect $ident expect $result" ${SSHKEYGEN} -q -s $OBJ/host_ca_key -I "regress host key for $USER" \ $sign_opts \ $OBJ/cert_host_key_rsa || fail "couldn't sign cert_host_key_rsa" ( cat $OBJ/sshd_proxy_bak echo HostKey $OBJ/cert_host_key_rsa echo HostCertificate $OBJ/cert_host_key_rsa-cert.pub ) > $OBJ/sshd_proxy ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \ -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \ -F $OBJ/ssh_proxy somehost true >/dev/null 2>&1 rc=$? if [ "x$result" = "xsuccess" ] ; then if [ $rc -ne 0 ]; then fail "ssh cert connect $ident failed unexpectedly" fi else if [ $rc -eq 0 ]; then fail "ssh cert connect $ident succeeded unexpectedly" fi fi } test_one "user-certificate" failure "-n $HOSTS" test_one "empty principals" success "-h" test_one "wrong principals" failure "-h -n foo" test_one "cert not yet valid" failure "-h -V20200101:20300101" test_one "cert expired" failure "-h -V19800101:19900101" test_one "cert valid interval" success "-h -V-1w:+2w" test_one "cert has constraints" failure "-h -Oforce-command=false" # Check downgrade of cert to raw key when no CA found rm -f $OBJ/known_hosts-cert $OBJ/cert_host_key* for ktype in rsa dsa ; do verbose "$tid: host ${ktype} cert downgrade to raw key" # Generate and sign a host key ${SSHKEYGEN} -q -N '' -t ${ktype} \ -f $OBJ/cert_host_key_${ktype} || \ fail "ssh-keygen of cert_host_key_${ktype} failed" ${SSHKEYGEN} -h -q -s $OBJ/host_ca_key -I "regress host key for $USER" \ -n $HOSTS $OBJ/cert_host_key_${ktype} || fail "couldn't sign cert_host_key_${ktype}" ( echon "$HOSTS " cat $OBJ/cert_host_key_${ktype}.pub ) > $OBJ/known_hosts-cert ( cat $OBJ/sshd_proxy_bak echo HostKey $OBJ/cert_host_key_${ktype} echo HostCertificate $OBJ/cert_host_key_${ktype}-cert.pub ) > $OBJ/sshd_proxy ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \ -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \ -F $OBJ/ssh_proxy somehost true if [ $? -ne 0 ]; then fail "ssh cert connect failed" fi done rm -f $OBJ/known_hosts-cert $OBJ/host_ca_key* $OBJ/cert_host_key*