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Diffstat (limited to '')
| -rw-r--r-- | regress/dhgex.sh | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/regress/dhgex.sh b/regress/dhgex.sh new file mode 100644 index 0000000..6dd4cfe --- /dev/null +++ b/regress/dhgex.sh @@ -0,0 +1,61 @@ +# $OpenBSD: dhgex.sh,v 1.7 2020/12/21 22:48:41 dtucker Exp $ +# Placed in the Public Domain. + +tid="dhgex" + +LOG=${TEST_SSH_LOGFILE} +rm -f ${LOG} +cp $OBJ/sshd_proxy $OBJ/sshd_proxy_bak + +kexs=`${SSH} -Q kex | grep diffie-hellman-group-exchange` + +ssh_test_dhgex() +{ + bits="$1"; shift + cipher="$1"; shift + kex="$1"; shift + + cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy + echo "KexAlgorithms=$kex" >> $OBJ/sshd_proxy + echo "Ciphers=$cipher" >> $OBJ/sshd_proxy + rm -f ${LOG} + opts="-oKexAlgorithms=$kex -oCiphers=$cipher" + min=2048 + max=8192 + groupsz="$min<$bits<$max" + verbose "$tid bits $bits $kex $cipher" + ${SSH} ${opts} $@ -vvv -F ${OBJ}/ssh_proxy somehost true + if [ $? -ne 0 ]; then + fail "ssh failed ($@)" + fi + # check what we request + grep "SSH2_MSG_KEX_DH_GEX_REQUEST($groupsz) sent" ${LOG} >/dev/null + if [ $? != 0 ]; then + got=`egrep "SSH2_MSG_KEX_DH_GEX_REQUEST(.*) sent" ${LOG}` + fail "$tid unexpected GEX sizes, expected $groupsz, got $got" + fi + # check what we got. + gotbits="`awk 'BEGIN{FS="/"}/bits set:/{print $2}' ${LOG} | + head -1 | tr -d '\r\n'`" + trace "expected '$bits' got '$gotbits'" + if [ -z "$gotbits" ] || [ "$gotbits" -lt "$bits" ]; then + fatal "$tid expected $bits bit group, got $gotbits" + fi +} + +check() +{ + bits="$1"; shift + + for c in $@; do + for k in $kexs; do + ssh_test_dhgex $bits $c $k + done + done +} + +check 3072 3des-cbc # 112 bits. +check 3072 `${SSH} -Q cipher | grep 128` +check 7680 `${SSH} -Q cipher | grep 192` +check 8192 `${SSH} -Q cipher | grep 256` +check 8192 chacha20-poly1305@openssh.com |