crypto/openssh/regress/dhgex.sh

   1 #       $OpenBSD: dhgex.sh,v 1.2 2014/04/21 22:15:37 djm Exp $
   2 #       Placed in the Public Domain.
   3
   4 tid="dhgex"
   5
   6 LOG=${TEST_SSH_LOGFILE}
   7 rm -f ${LOG}
   8 cp $OBJ/sshd_proxy $OBJ/sshd_proxy_bak
   9
  10 kexs=`${SSH} -Q kex | grep diffie-hellman-group-exchange`
  11
  12 ssh_test_dhgex()
  13 {
  14         bits="$1"; shift
  15         cipher="$1"; shift
  16         kex="$1"; shift
  17
  18         cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy
  19         echo "KexAlgorithms=$kex" >> $OBJ/sshd_proxy
  20         echo "Ciphers=$cipher" >> $OBJ/sshd_proxy
  21         rm -f ${LOG}
  22         opts="-oKexAlgorithms=$kex -oCiphers=$cipher"
  23         groupsz="1024<$bits<8192"
  24         verbose "$tid bits $bits $kex $cipher"
  25         ${SSH} ${opts} $@ -vvv -F ${OBJ}/ssh_proxy somehost true
  26         if [ $? -ne 0 ]; then
  27                 fail "ssh failed ($@)"
  28         fi
  29         # check what we request
  30         grep "SSH2_MSG_KEX_DH_GEX_REQUEST($groupsz) sent" ${LOG} >/dev/null
  31         if [ $? != 0 ]; then
  32                 got=`egrep "SSH2_MSG_KEX_DH_GEX_REQUEST(.*) sent" ${LOG}`
  33                 fail "$tid unexpected GEX sizes, expected $groupsz, got $got"
  34         fi
  35         # check what we got (depends on contents of system moduli file)
  36         gotbits="`awk '/bits set:/{print $4}' ${LOG} | head -1 | cut -f2 -d/`"
  37         if [ "$gotbits" -lt "$bits" ]; then
  38                 fatal "$tid expected $bits bit group, got $gotbits"
  39         fi
  40 }
  41
  42 check()
  43 {
  44         bits="$1"; shift
  45
  46         for c in $@; do
  47                 for k in $kexs; do
  48                         ssh_test_dhgex $bits $c $k
  49                 done
  50         done
  51 }
  52
  53 #check 2048 3des-cbc
  54 check 3072 `${SSH} -Q cipher | grep 128`
  55 check 3072 arcfour blowfish-cbc
  56 check 7680 `${SSH} -Q cipher | grep 192`
  57 check 8192 `${SSH} -Q cipher | grep 256`
  58 check 8192 rijndael-cbc@lysator.liu.se chacha20-poly1305@openssh.com