crypto/openssh/regress/dhgex.sh

   1 #       $OpenBSD: dhgex.sh,v 1.3 2015/10/23 02:22:01 dtucker 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=$cipher"
  23         min=2048
  24         max=8192
  25         groupsz="$min<$bits<$max"
  26         verbose "$tid bits $bits $kex $cipher"
  27         ${SSH} ${opts} $@ -vvv -F ${OBJ}/ssh_proxy somehost true
  28         if [ $? -ne 0 ]; then
  29                 fail "ssh failed ($@)"
  30         fi
  31         # check what we request
  32         grep "SSH2_MSG_KEX_DH_GEX_REQUEST($groupsz) sent" ${LOG} >/dev/null
  33         if [ $? != 0 ]; then
  34                 got=`egrep "SSH2_MSG_KEX_DH_GEX_REQUEST(.*) sent" ${LOG}`
  35                 fail "$tid unexpected GEX sizes, expected $groupsz, got $got"
  36         fi
  37         # check what we got (depends on contents of system moduli file)
  38         gotbits="`awk '/bits set:/{print $4}' ${LOG} | head -1 | cut -f2 -d/`"
  39         if [ "$gotbits" -lt "$bits" ]; then
  40                 fatal "$tid expected $bits bit group, got $gotbits"
  41         fi
  42 }
  43
  44 check()
  45 {
  46         bits="$1"; shift
  47
  48         for c in $@; do
  49                 for k in $kexs; do
  50                         ssh_test_dhgex $bits $c $k
  51                 done
  52         done
  53 }
  54
  55 #check 2048 3des-cbc
  56 check 3072 `${SSH} -Q cipher | grep 128`
  57 check 3072 arcfour blowfish-cbc
  58 check 7680 `${SSH} -Q cipher | grep 192`
  59 check 8192 `${SSH} -Q cipher | grep 256`
  60 check 8192 rijndael-cbc@lysator.liu.se chacha20-poly1305@openssh.com