| # $OpenBSD: cert-file.sh,v 1.3 2016/12/16 01:01:07 djm Exp $ |
| # Placed in the Public Domain. |
| |
| tid="ssh with certificates" |
| |
| rm -f $OBJ/user_ca_key* $OBJ/user_key* |
| rm -f $OBJ/cert_user_key* |
| |
| # Create a CA key |
| ${SSHKEYGEN} -q -N '' -t ed25519 -f $OBJ/user_ca_key1 ||\ |
| fatal "ssh-keygen failed" |
| ${SSHKEYGEN} -q -N '' -t ed25519 -f $OBJ/user_ca_key2 ||\ |
| fatal "ssh-keygen failed" |
| |
| # Make some keys and certificates. |
| ${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 -N '' -t ed25519 -f $OBJ/user_key3 || \ |
| fatal "ssh-keygen failed" |
| ${SSHKEYGEN} -q -N '' -t ed25519 -f $OBJ/user_key4 || \ |
| fatal "ssh-keygen failed" |
| ${SSHKEYGEN} -q -N '' -t ed25519 -f $OBJ/user_key5 || \ |
| fatal "ssh-keygen failed" |
| |
| # Move the certificate to a different address to better control |
| # when it is offered. |
| ${SSHKEYGEN} -q -s $OBJ/user_ca_key1 -I "regress user key for $USER" \ |
| -z $$ -n ${USER} $OBJ/user_key1 || |
| fatal "couldn't sign user_key1 with user_ca_key1" |
| mv $OBJ/user_key1-cert.pub $OBJ/cert_user_key1_1.pub |
| ${SSHKEYGEN} -q -s $OBJ/user_ca_key2 -I "regress user key for $USER" \ |
| -z $$ -n ${USER} $OBJ/user_key1 || |
| fatal "couldn't sign user_key1 with user_ca_key2" |
| mv $OBJ/user_key1-cert.pub $OBJ/cert_user_key1_2.pub |
| ${SSHKEYGEN} -q -s $OBJ/user_ca_key1 -I "regress user key for $USER" \ |
| -z $$ -n ${USER} $OBJ/user_key3 || |
| fatal "couldn't sign user_key3 with user_ca_key1" |
| rm $OBJ/user_key3.pub # to test use of private key w/o public half. |
| ${SSHKEYGEN} -q -s $OBJ/user_ca_key1 -I "regress user key for $USER" \ |
| -z $$ -n ${USER} $OBJ/user_key4 || |
| fatal "couldn't sign user_key4 with user_ca_key1" |
| rm $OBJ/user_key4 $OBJ/user_key4.pub # to test no matching pub/private key case. |
| |
| trace 'try with identity files' |
| opts="-F $OBJ/ssh_proxy -oIdentitiesOnly=yes" |
| opts2="$opts -i $OBJ/user_key1 -i $OBJ/user_key2" |
| echo "cert-authority $(cat $OBJ/user_ca_key1.pub)" > $OBJ/authorized_keys_$USER |
| |
| # Make a clean config that doesn't have any pre-added identities. |
| cat $OBJ/ssh_proxy | grep -v IdentityFile > $OBJ/no_identity_config |
| |
| # XXX: verify that certificate used was what we expect. Needs exposure of |
| # keys via enviornment variable or similar. |
| |
| for p in ${SSH_PROTOCOLS}; do |
| # Key with no .pub should work - finding the equivalent *-cert.pub. |
| verbose "protocol $p: identity cert with no plain public file" |
| ${SSH} -F $OBJ/no_identity_config -oIdentitiesOnly=yes \ |
| -i $OBJ/user_key3 somehost exit 5$p |
| [ $? -ne 5$p ] && fail "ssh failed" |
| |
| # CertificateFile matching private key with no .pub file should work. |
| verbose "protocol $p: CertificateFile with no plain public file" |
| ${SSH} -F $OBJ/no_identity_config -oIdentitiesOnly=yes \ |
| -oCertificateFile=$OBJ/user_key3-cert.pub \ |
| -i $OBJ/user_key3 somehost exit 5$p |
| [ $? -ne 5$p ] && fail "ssh failed" |
| |
| # Just keys should fail |
| verbose "protocol $p: plain keys" |
| ${SSH} $opts2 somehost exit 5$p |
| r=$? |
| if [ $r -eq 5$p ]; then |
| fail "ssh succeeded with no certs in protocol $p" |
| fi |
| |
| # Keys with untrusted cert should fail. |
| verbose "protocol $p: untrusted cert" |
| opts3="$opts2 -oCertificateFile=$OBJ/cert_user_key1_2.pub" |
| ${SSH} $opts3 somehost exit 5$p |
| r=$? |
| if [ $r -eq 5$p ]; then |
| fail "ssh succeeded with bad cert in protocol $p" |
| fi |
| |
| # Good cert with bad key should fail. |
| verbose "protocol $p: good cert, bad key" |
| opts3="$opts -i $OBJ/user_key2" |
| opts3="$opts3 -oCertificateFile=$OBJ/cert_user_key1_1.pub" |
| ${SSH} $opts3 somehost exit 5$p |
| r=$? |
| if [ $r -eq 5$p ]; then |
| fail "ssh succeeded with no matching key in protocol $p" |
| fi |
| |
| # Keys with one trusted cert, should succeed. |
| verbose "protocol $p: single trusted" |
| opts3="$opts2 -oCertificateFile=$OBJ/cert_user_key1_1.pub" |
| ${SSH} $opts3 somehost exit 5$p |
| r=$? |
| if [ $r -ne 5$p ]; then |
| fail "ssh failed with trusted cert and key in protocol $p" |
| fi |
| |
| # Multiple certs and keys, with one trusted cert, should succeed. |
| verbose "protocol $p: multiple trusted" |
| opts3="$opts2 -oCertificateFile=$OBJ/cert_user_key1_2.pub" |
| opts3="$opts3 -oCertificateFile=$OBJ/cert_user_key1_1.pub" |
| ${SSH} $opts3 somehost exit 5$p |
| r=$? |
| if [ $r -ne 5$p ]; then |
| fail "ssh failed with multiple certs in protocol $p" |
| fi |
| done |
| |
| #next, using an agent in combination with the keys |
| SSH_AUTH_SOCK=/nonexistent ${SSHADD} -l > /dev/null 2>&1 |
| if [ $? -ne 2 ]; then |
| fatal "ssh-add -l did not fail with exit code 2" |
| fi |
| |
| trace "start agent" |
| eval `${SSHAGENT} -s` > /dev/null |
| r=$? |
| if [ $r -ne 0 ]; then |
| fatal "could not start ssh-agent: exit code $r" |
| fi |
| |
| # add private keys to agent |
| ${SSHADD} -k $OBJ/user_key2 > /dev/null 2>&1 |
| if [ $? -ne 0 ]; then |
| fatal "ssh-add did not succeed with exit code 0" |
| fi |
| ${SSHADD} -k $OBJ/user_key1 > /dev/null 2>&1 |
| if [ $? -ne 0 ]; then |
| fatal "ssh-add did not succeed with exit code 0" |
| fi |
| |
| # try ssh with the agent and certificates |
| # note: ssh agent only uses certificates in protocol 2 |
| opts="-F $OBJ/ssh_proxy" |
| # with no certificates, shoud fail |
| ${SSH} -2 $opts somehost exit 52 |
| if [ $? -eq 52 ]; then |
| fail "ssh connect with agent in protocol 2 succeeded with no cert" |
| fi |
| |
| #with an untrusted certificate, should fail |
| opts="$opts -oCertificateFile=$OBJ/cert_user_key1_2.pub" |
| ${SSH} -2 $opts somehost exit 52 |
| if [ $? -eq 52 ]; then |
| fail "ssh connect with agent in protocol 2 succeeded with bad cert" |
| fi |
| |
| #with an additional trusted certificate, should succeed |
| opts="$opts -oCertificateFile=$OBJ/cert_user_key1_1.pub" |
| ${SSH} -2 $opts somehost exit 52 |
| if [ $? -ne 52 ]; then |
| fail "ssh connect with agent in protocol 2 failed with good cert" |
| fi |
| |
| trace "kill agent" |
| ${SSHAGENT} -k > /dev/null |
| |
| #cleanup |
| rm -f $OBJ/user_ca_key* $OBJ/user_key* |
| rm -f $OBJ/cert_user_key* |