regress/cert-hostkey.sh

   1 #       $OpenBSD: cert-hostkey.sh,v 1.5 2010/08/31 12:24:09 djm Exp $
   2 #       Placed in the Public Domain.
   3
   4 tid="certified host keys"
   5
   6 # used to disable ECC based tests on platforms without ECC
   7 ecdsa=""
   8 if test "x$TEST_SSH_ECC" = "xyes"; then
   9         ecdsa=ecdsa
  10 fi
  11
  12 rm -f $OBJ/known_hosts-cert $OBJ/host_ca_key* $OBJ/cert_host_key*
  13 cp $OBJ/sshd_proxy $OBJ/sshd_proxy_bak
  14
  15 HOSTS='localhost-with-alias,127.0.0.1,::1'
  16
  17 # Create a CA key and add it to known hosts
  18 ${SSHKEYGEN} -q -N '' -t rsa  -f $OBJ/host_ca_key ||\
  19         fail "ssh-keygen of host_ca_key failed"
  20 (
  21         echon '@cert-authority '
  22         echon "$HOSTS "
  23         cat $OBJ/host_ca_key.pub
  24 ) > $OBJ/known_hosts-cert
  25
  26 # Generate and sign host keys
  27 for ktype in rsa dsa $ecdsa ; do
  28         verbose "$tid: sign host ${ktype} cert"
  29         # Generate and sign a host key
  30         ${SSHKEYGEN} -q -N '' -t ${ktype} \
  31             -f $OBJ/cert_host_key_${ktype} || \
  32                 fail "ssh-keygen of cert_host_key_${ktype} failed"
  33         ${SSHKEYGEN} -h -q -s $OBJ/host_ca_key \
  34             -I "regress host key for $USER" \
  35             -n $HOSTS $OBJ/cert_host_key_${ktype} ||
  36                 fail "couldn't sign cert_host_key_${ktype}"
  37         # v00 ecdsa certs do not exist
  38         test "${ktype}" = "ecdsa" && continue
  39         cp $OBJ/cert_host_key_${ktype} $OBJ/cert_host_key_${ktype}_v00
  40         cp $OBJ/cert_host_key_${ktype}.pub $OBJ/cert_host_key_${ktype}_v00.pub
  41         ${SSHKEYGEN} -t v00 -h -q -s $OBJ/host_ca_key \
  42             -I "regress host key for $USER" \
  43             -n $HOSTS $OBJ/cert_host_key_${ktype}_v00 ||
  44                 fail "couldn't sign cert_host_key_${ktype}_v00"
  45 done
  46
  47 # Basic connect tests
  48 for privsep in yes no ; do
  49         for ktype in rsa dsa $ecdsa rsa_v00 dsa_v00; do
  50                 verbose "$tid: host ${ktype} cert connect privsep $privsep"
  51                 (
  52                         cat $OBJ/sshd_proxy_bak
  53                         echo HostKey $OBJ/cert_host_key_${ktype}
  54                         echo HostCertificate $OBJ/cert_host_key_${ktype}-cert.pub
  55                         echo UsePrivilegeSeparation $privsep
  56                 ) > $OBJ/sshd_proxy
  57
  58                 ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \
  59                     -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \
  60                         -F $OBJ/ssh_proxy somehost true
  61                 if [ $? -ne 0 ]; then
  62                         fail "ssh cert connect failed"
  63                 fi
  64         done
  65 done
  66
  67 # Revoked certificates with key present
  68 (
  69         echon '@cert-authority '
  70         echon "$HOSTS "
  71         cat $OBJ/host_ca_key.pub
  72         echon '@revoked '
  73         echon "* "
  74         cat $OBJ/cert_host_key_rsa.pub
  75         if test "x$TEST_SSH_ECC" = "xyes"; then
  76                 echon '@revoked '
  77                 echon "* "
  78                 cat $OBJ/cert_host_key_ecdsa.pub
  79         fi
  80         echon '@revoked '
  81         echon "* "
  82         cat $OBJ/cert_host_key_dsa.pub
  83         echon '@revoked '
  84         echon "* "
  85         cat $OBJ/cert_host_key_rsa_v00.pub
  86         echon '@revoked '
  87         echon "* "
  88         cat $OBJ/cert_host_key_dsa_v00.pub
  89 ) > $OBJ/known_hosts-cert
  90 for privsep in yes no ; do
  91         for ktype in rsa dsa $ecdsa rsa_v00 dsa_v00; do
  92                 verbose "$tid: host ${ktype} revoked cert privsep $privsep"
  93                 (
  94                         cat $OBJ/sshd_proxy_bak
  95                         echo HostKey $OBJ/cert_host_key_${ktype}
  96                         echo HostCertificate $OBJ/cert_host_key_${ktype}-cert.pub
  97                         echo UsePrivilegeSeparation $privsep
  98                 ) > $OBJ/sshd_proxy
  99
 100                 ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \
 101                     -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \
 102                         -F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
 103                 if [ $? -eq 0 ]; then
 104                         fail "ssh cert connect succeeded unexpectedly"
 105                 fi
 106         done
 107 done
 108
 109 # Revoked CA
 110 (
 111         echon '@cert-authority '
 112         echon "$HOSTS "
 113         cat $OBJ/host_ca_key.pub
 114         echon '@revoked '
 115         echon "* "
 116         cat $OBJ/host_ca_key.pub
 117 ) > $OBJ/known_hosts-cert
 118 for ktype in rsa dsa $ecdsa rsa_v00 dsa_v00 ; do
 119         verbose "$tid: host ${ktype} revoked cert"
 120         (
 121                 cat $OBJ/sshd_proxy_bak
 122                 echo HostKey $OBJ/cert_host_key_${ktype}
 123                 echo HostCertificate $OBJ/cert_host_key_${ktype}-cert.pub
 124         ) > $OBJ/sshd_proxy
 125         ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \
 126             -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \
 127                 -F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
 128         if [ $? -eq 0 ]; then
 129                 fail "ssh cert connect succeeded unexpectedly"
 130         fi
 131 done
 132
 133 # Create a CA key and add it to known hosts
 134 (
 135         echon '@cert-authority '
 136         echon "$HOSTS "
 137         cat $OBJ/host_ca_key.pub
 138 ) > $OBJ/known_hosts-cert
 139
 140 test_one() {
 141         ident=$1
 142         result=$2
 143         sign_opts=$3
 144
 145         for kt in rsa rsa_v00 ; do
 146                 case $kt in
 147                 *_v00) args="-t v00" ;;
 148                 *) args="" ;;
 149                 esac
 150
 151                 verbose "$tid: host cert connect $ident $kt expect $result"
 152                 ${SSHKEYGEN} -q -s $OBJ/host_ca_key \
 153                     -I "regress host key for $USER" \
 154                     $sign_opts $args \
 155                     $OBJ/cert_host_key_${kt} ||
 156                         fail "couldn't sign cert_host_key_${kt}"
 157                 (
 158                         cat $OBJ/sshd_proxy_bak
 159                         echo HostKey $OBJ/cert_host_key_${kt}
 160                         echo HostCertificate $OBJ/cert_host_key_${kt}-cert.pub
 161                 ) > $OBJ/sshd_proxy
 162
 163                 ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \
 164                     -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \
 165                     -F $OBJ/ssh_proxy somehost true >/dev/null 2>&1
 166                 rc=$?
 167                 if [ "x$result" = "xsuccess" ] ; then
 168                         if [ $rc -ne 0 ]; then
 169                                 fail "ssh cert connect $ident failed unexpectedly"
 170                         fi
 171                 else
 172                         if [ $rc -eq 0 ]; then
 173                                 fail "ssh cert connect $ident succeeded unexpectedly"
 174                         fi
 175                 fi
 176         done
 177 }
 178
 179 test_one "user-certificate"     failure "-n $HOSTS"
 180 test_one "empty principals"     success "-h"
 181 test_one "wrong principals"     failure "-h -n foo"
 182 test_one "cert not yet valid"   failure "-h -V20200101:20300101"
 183 test_one "cert expired"         failure "-h -V19800101:19900101"
 184 test_one "cert valid interval"  success "-h -V-1w:+2w"
 185 test_one "cert has constraints" failure "-h -Oforce-command=false"
 186
 187 # Check downgrade of cert to raw key when no CA found
 188 for v in v01 v00 ;  do
 189         for ktype in rsa dsa $ecdsa ; do
 190                 # v00 ecdsa certs do not exist.
 191                 test "${v}${ktype}" = "v00ecdsa" && continue
 192                 rm -f $OBJ/known_hosts-cert $OBJ/cert_host_key*
 193                 verbose "$tid: host ${ktype} ${v} cert downgrade to raw key"
 194                 # Generate and sign a host key
 195                 ${SSHKEYGEN} -q -N '' -t ${ktype} \
 196                     -f $OBJ/cert_host_key_${ktype} || \
 197                         fail "ssh-keygen of cert_host_key_${ktype} failed"
 198                 ${SSHKEYGEN} -t ${v} -h -q -s $OBJ/host_ca_key \
 199                     -I "regress host key for $USER" \
 200                     -n $HOSTS $OBJ/cert_host_key_${ktype} ||
 201                         fail "couldn't sign cert_host_key_${ktype}"
 202                 (
 203                         echon "$HOSTS "
 204                         cat $OBJ/cert_host_key_${ktype}.pub
 205                 ) > $OBJ/known_hosts-cert
 206                 (
 207                         cat $OBJ/sshd_proxy_bak
 208                         echo HostKey $OBJ/cert_host_key_${ktype}
 209                         echo HostCertificate $OBJ/cert_host_key_${ktype}-cert.pub
 210                 ) > $OBJ/sshd_proxy
 211
 212                 ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \
 213                     -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \
 214                         -F $OBJ/ssh_proxy somehost true
 215                 if [ $? -ne 0 ]; then
 216                         fail "ssh cert connect failed"
 217                 fi
 218         done
 219 done
 220
 221 # Wrong certificate
 222 (
 223         echon '@cert-authority '
 224         echon "$HOSTS "
 225         cat $OBJ/host_ca_key.pub
 226 ) > $OBJ/known_hosts-cert
 227 for v in v01 v00 ;  do
 228         for kt in rsa dsa $ecdsa ; do
 229                 # v00 ecdsa certs do not exist.
 230                 test "${v}${ktype}" = "v00ecdsa" && continue
 231                 rm -f $OBJ/cert_host_key*
 232                 # Self-sign key
 233                 ${SSHKEYGEN} -q -N '' -t ${kt} \
 234                     -f $OBJ/cert_host_key_${kt} || \
 235                         fail "ssh-keygen of cert_host_key_${kt} failed"
 236                 ${SSHKEYGEN} -t ${v} -h -q -s $OBJ/cert_host_key_${kt} \
 237                     -I "regress host key for $USER" \
 238                     -n $HOSTS $OBJ/cert_host_key_${kt} ||
 239                         fail "couldn't sign cert_host_key_${kt}"
 240                 verbose "$tid: host ${kt} connect wrong cert"
 241                 (
 242                         cat $OBJ/sshd_proxy_bak
 243                         echo HostKey $OBJ/cert_host_key_${kt}
 244                         echo HostCertificate $OBJ/cert_host_key_${kt}-cert.pub
 245                 ) > $OBJ/sshd_proxy
 246
 247                 ${SSH} -2 -oUserKnownHostsFile=$OBJ/known_hosts-cert \
 248                     -oGlobalKnownHostsFile=$OBJ/known_hosts-cert \
 249                         -F $OBJ/ssh_proxy -q somehost true >/dev/null 2>&1
 250                 if [ $? -eq 0 ]; then
 251                         fail "ssh cert connect $ident succeeded unexpectedly"
 252                 fi
 253         done
 254 done
 255
 256 rm -f $OBJ/known_hosts-cert $OBJ/host_ca_key* $OBJ/cert_host_key*