regress/cert-hostkey.sh

   1 #       $OpenBSD: cert-hostkey.sh,v 1.4 2010/04/16 01:58:45 djm Exp $
   2 #       Placed in the Public Domain.
   3
   4 tid="certified host keys"
   5
   6 rm -f $OBJ/known_hosts-cert $OBJ/host_ca_key* $OBJ/cert_host_key*
   7 cp $OBJ/sshd_proxy $OBJ/sshd_proxy_bak
   8
   9 HOSTS='localhost-with-alias,127.0.0.1,::1'
  10
  11 # Create a CA key and add it to known hosts
  12 ${SSHKEYGEN} -q -N '' -t rsa  -f $OBJ/host_ca_key ||\
  13         fail "ssh-keygen of host_ca_key failed"
  14 (
  15         echon '@cert-authority '
  16         echon "$HOSTS "
  17         cat $OBJ/host_ca_key.pub
  18 ) > $OBJ/known_hosts-cert
  19
  20 # Generate and sign host keys
  21 for ktype in rsa dsa ; do
  22         verbose "$tid: sign host ${ktype} cert"
  23         # Generate and sign a host key
  24         ${SSHKEYGEN} -q -N '' -t ${ktype} \
  25             -f $OBJ/cert_host_key_${ktype} || \
  26                 fail "ssh-keygen of cert_host_key_${ktype} failed"
  27         ${SSHKEYGEN} -h -q -s $OBJ/host_ca_key \
  28             -I "regress host key for $USER" \
  29             -n $HOSTS $OBJ/cert_host_key_${ktype} ||
  30                 fail "couldn't sign cert_host_key_${ktype}"
  31         cp $OBJ/cert_host_key_${ktype} $OBJ/cert_host_key_${ktype}_v00
  32         cp $OBJ/cert_host_key_${ktype}.pub $OBJ/cert_host_key_${ktype}_v00.pub
  33         ${SSHKEYGEN} -t v00 -h -q -s $OBJ/host_ca_key \
  34             -I "regress host key for $USER" \
  35             -n $HOSTS $OBJ/cert_host_key_${ktype}_v00 ||
  36                 fail "couldn't sign cert_host_key_${ktype}_v00"
  37 done
  38
  39 # Basic connect tests
  40 for privsep in yes no ; do
  41         for ktype in rsa dsa rsa_v00 dsa_v00; do
  42                 verbose "$tid: host ${ktype} cert connect privsep $privsep"
  43                 (
  44                         cat $OBJ/sshd_proxy_bak
  45                         echo HostKey $OBJ/cert_host_key_${ktype}
  46                         echo HostCertificate $OBJ/cert_host_key_${ktype}-cert.pub
  47                         echo UsePrivilegeSeparation $privsep
  48                 ) > $OBJ/sshd_proxy
  49
  50                 ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \
  51                     -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \
  52                         -F $OBJ/ssh_proxy somehost true
  53                 if [ $? -ne 0 ]; then
  54                         fail "ssh cert connect failed"
  55                 fi
  56         done
  57 done
  58
  59 # Revoked certificates with key present
  60 (
  61         echon '@cert-authority '
  62         echon "$HOSTS "
  63         cat $OBJ/host_ca_key.pub
  64         echon '@revoked '
  65         echon "* "
  66         cat $OBJ/cert_host_key_rsa.pub
  67         echon '@revoked '
  68         echon "* "
  69         cat $OBJ/cert_host_key_dsa.pub
  70         echon '@revoked '
  71         echon "* "
  72         cat $OBJ/cert_host_key_rsa_v00.pub
  73         echon '@revoked '
  74         echon "* "
  75         cat $OBJ/cert_host_key_dsa_v00.pub
  76 ) > $OBJ/known_hosts-cert
  77 for privsep in yes no ; do
  78         for ktype in rsa dsa rsa_v00 dsa_v00; do
  79                 verbose "$tid: host ${ktype} revoked cert privsep $privsep"
  80                 (
  81                         cat $OBJ/sshd_proxy_bak
  82                         echo HostKey $OBJ/cert_host_key_${ktype}
  83                         echo HostCertificate $OBJ/cert_host_key_${ktype}-cert.pub
  84                         echo UsePrivilegeSeparation $privsep
  85                 ) > $OBJ/sshd_proxy
  86
  87                 ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \
  88                     -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \
  89                         -F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
  90                 if [ $? -eq 0 ]; then
  91                         fail "ssh cert connect succeeded unexpectedly"
  92                 fi
  93         done
  94 done
  95
  96 # Revoked CA
  97 (
  98         echon '@cert-authority '
  99         echon "$HOSTS "
 100         cat $OBJ/host_ca_key.pub
 101         echon '@revoked '
 102         echon "* "
 103         cat $OBJ/host_ca_key.pub
 104 ) > $OBJ/known_hosts-cert
 105 for ktype in rsa dsa rsa_v00 dsa_v00 ; do
 106         verbose "$tid: host ${ktype} revoked cert"
 107         (
 108                 cat $OBJ/sshd_proxy_bak
 109                 echo HostKey $OBJ/cert_host_key_${ktype}
 110                 echo HostCertificate $OBJ/cert_host_key_${ktype}-cert.pub
 111         ) > $OBJ/sshd_proxy
 112         ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \
 113             -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \
 114                 -F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
 115         if [ $? -eq 0 ]; then
 116                 fail "ssh cert connect succeeded unexpectedly"
 117         fi
 118 done
 119
 120 # Create a CA key and add it to known hosts
 121 (
 122         echon '@cert-authority '
 123         echon "$HOSTS "
 124         cat $OBJ/host_ca_key.pub
 125 ) > $OBJ/known_hosts-cert
 126
 127 test_one() {
 128         ident=$1
 129         result=$2
 130         sign_opts=$3
 131
 132         for kt in rsa rsa_v00 ; do
 133                 case $kt in
 134                 *_v00) args="-t v00" ;;
 135                 *) args="" ;;
 136                 esac
 137
 138                 verbose "$tid: host cert connect $ident $kt expect $result"
 139                 ${SSHKEYGEN} -q -s $OBJ/host_ca_key \
 140                     -I "regress host key for $USER" \
 141                     $sign_opts $args \
 142                     $OBJ/cert_host_key_${kt} ||
 143                         fail "couldn't sign cert_host_key_${kt}"
 144                 (
 145                         cat $OBJ/sshd_proxy_bak
 146                         echo HostKey $OBJ/cert_host_key_${kt}
 147                         echo HostCertificate $OBJ/cert_host_key_${kt}-cert.pub
 148                 ) > $OBJ/sshd_proxy
 149
 150                 ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \
 151                     -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \
 152                     -F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
 153                 rc=$?
 154                 if [ "x$result" = "xsuccess" ] ; then
 155                         if [ $rc -ne 0 ]; then
 156                                 fail "ssh cert connect $ident failed unexpectedly"
 157                         fi
 158                 else
 159                         if [ $rc -eq 0 ]; then
 160                                 fail "ssh cert connect $ident succeeded unexpectedly"
 161                         fi
 162                 fi
 163         done
 164 }
 165
 166 test_one "user-certificate"     failure "-n $HOSTS"
 167 test_one "empty principals"     success "-h"
 168 test_one "wrong principals"     failure "-h -n foo"
 169 test_one "cert not yet valid"   failure "-h -V20200101:20300101"
 170 test_one "cert expired"         failure "-h -V19800101:19900101"
 171 test_one "cert valid interval"  success "-h -V-1w:+2w"
 172 test_one "cert has constraints" failure "-h -Oforce-command=false"
 173
 174 # Check downgrade of cert to raw key when no CA found
 175 for v in v01 v00 ;  do
 176         for ktype in rsa dsa ; do
 177                 rm -f $OBJ/known_hosts-cert $OBJ/cert_host_key*
 178                 verbose "$tid: host ${ktype} ${v} cert downgrade to raw key"
 179                 # Generate and sign a host key
 180                 ${SSHKEYGEN} -q -N '' -t ${ktype} \
 181                     -f $OBJ/cert_host_key_${ktype} || \
 182                         fail "ssh-keygen of cert_host_key_${ktype} failed"
 183                 ${SSHKEYGEN} -t ${v} -h -q -s $OBJ/host_ca_key \
 184                     -I "regress host key for $USER" \
 185                     -n $HOSTS $OBJ/cert_host_key_${ktype} ||
 186                         fail "couldn't sign cert_host_key_${ktype}"
 187                 (
 188                         echon "$HOSTS "
 189                         cat $OBJ/cert_host_key_${ktype}.pub
 190                 ) > $OBJ/known_hosts-cert
 191                 (
 192                         cat $OBJ/sshd_proxy_bak
 193                         echo HostKey $OBJ/cert_host_key_${ktype}
 194                         echo HostCertificate $OBJ/cert_host_key_${ktype}-cert.pub
 195                 ) > $OBJ/sshd_proxy
 196
 197                 ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \
 198                     -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \
 199                         -F $OBJ/ssh_proxy somehost true
 200                 if [ $? -ne 0 ]; then
 201                         fail "ssh cert connect failed"
 202                 fi
 203         done
 204 done
 205
 206 # Wrong certificate
 207 (
 208         echon '@cert-authority '
 209         echon "$HOSTS "
 210         cat $OBJ/host_ca_key.pub
 211 ) > $OBJ/known_hosts-cert
 212 for v in v01 v00 ;  do
 213         for kt in rsa dsa ; do
 214                 rm -f $OBJ/cert_host_key*
 215                 # Self-sign key
 216                 ${SSHKEYGEN} -q -N '' -t ${kt} \
 217                     -f $OBJ/cert_host_key_${kt} || \
 218                         fail "ssh-keygen of cert_host_key_${kt} failed"
 219                 ${SSHKEYGEN} -t ${v} -h -q -s $OBJ/cert_host_key_${kt} \
 220                     -I "regress host key for $USER" \
 221                     -n $HOSTS $OBJ/cert_host_key_${kt} ||
 222                         fail "couldn't sign cert_host_key_${kt}"
 223                 verbose "$tid: host ${kt} connect wrong cert"
 224                 (
 225                         cat $OBJ/sshd_proxy_bak
 226                         echo HostKey $OBJ/cert_host_key_${kt}
 227                         echo HostCertificate $OBJ/cert_host_key_${kt}-cert.pub
 228                 ) > $OBJ/sshd_proxy
 229
 230                 ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \
 231                     -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \
 232                         -F $OBJ/ssh_proxy -q somehost true >/dev/null 2>&1
 233                 if [ $? -eq 0 ]; then
 234                         fail "ssh cert connect $ident succeeded unexpectedly"
 235                 fi
 236         done
 237 done
 238
 239 rm -f $OBJ/known_hosts-cert $OBJ/host_ca_key* $OBJ/cert_host_key*