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|
#!/bin/bash
CRYPTSETUP=../cryptsetup
# try to validate using loop-AES losetup/kernel if available
LOSETUP_AES=/losetup-aes.old
LOOP_DD_PARAM="bs=1k count=10000"
DEV_NAME=dummy
IMG=loopaes.img
KEYv1=key_v1
KEYv2=key_v2
KEYv3=key_v3
LOOPDEV=$(losetup -f 2>/dev/null)
function dmremove() { # device
udevadm settle >/dev/null 2>&1
dmsetup remove $1 >/dev/null 2>&1
}
function remove_mapping()
{
[ -b /dev/mapper/$DEV_NAME2 ] && dmremove $DEV_NAME2
[ -b /dev/mapper/$DEV_NAME ] && dmremove $DEV_NAME
losetup -d $LOOPDEV >/dev/null 2>&1
rm -f $IMG $KEYv1 $KEYv2 $KEYv3 >/dev/null 2>&1
}
function fail()
{
echo "FAILED at line $(caller)"
remove_mapping
exit 2
}
function skip()
{
[ -n "$1" ] && echo "$1"
exit 77
}
function prepare()
{
remove_mapping
dd if=/dev/zero of=$IMG $LOOP_DD_PARAM >/dev/null 2>&1
sync
losetup $LOOPDEV $IMG
# Prepare raw key: v1 - one key, v2 - 64 keys, v3 - 64 + one IV
if [ ! -e $KEYv3 ]; then
head -c 3705 /dev/urandom | uuencode -m - | head -n 66 | tail -n 65 >$KEYv3
head -n 1 $KEYv3 > $KEYv1
head -n 64 $KEYv3 > $KEYv2
fi
[ -n "$1" ] && echo -n "$1 "
}
function check_exists()
{
[ -b /dev/mapper/$DEV_NAME ] || fail
}
function get_offset_params() # $offset
{
offset=$1
if [ "${offset:0:1}" = "@" ] ; then
echo "-o $((${offset:1} / 512)) -p 0"
else
echo "-o $((offset / 512))"
fi
}
function get_expsum() # $offset
{
case $1 in
0)
echo "31e00e0e4c233c89051cd748122fde2c98db0121ca09ba93a3820817ea037bc5"
;;
@8192 | 8192)
echo "bfd94392d1dd8f5d477251d21b3c736e177a4945cd4937847fc7bace82996aed"
;;
@8388608 | 8388608)
echo "33838fe36928a929bd7971bed7e82bd426c88193fcd692c2e6f1b9c9bfecd4d6"
;;
*) fail
;;
esac
}
function check_sum() # $key $keysize $offset [stdin|keyfile]
{
# Fill device with zeroes and reopen it
dd if=/dev/zero of=/dev/mapper/$DEV_NAME bs=1k $LOOP_DD_PARAM >/dev/null 2>&1
sync
dmremove $DEV_NAME
EXPSUM=$(get_expsum $3)
if [ "$4" == "stdin" ] ; then
cat $1 | $CRYPTSETUP loopaesOpen $LOOPDEV $DEV_NAME -s $2 --key-file - $(get_offset_params $3) >/dev/null 2>&1
else
$CRYPTSETUP loopaesOpen $LOOPDEV $DEV_NAME -s $2 --key-file $1 $(get_offset_params $3) >/dev/null 2>&1
fi
ret=$?
VSUM=$(sha256sum /dev/mapper/$DEV_NAME | cut -d' ' -f 1)
if [ $ret -eq 0 -a "$VSUM" = "$EXPSUM" ] ; then
echo -n "[$4:OK]"
else
echo "[$4:FAIL]"
[ "$VSUM" != "$EXPSUM" ] && echo " Expecting $EXPSUM got $VSUM."
fail
fi
}
function check_sum_losetup() # $key $alg
{
[ ! -x $LOSETUP_AES ] && echo && return
echo -n " Verification using loop-AES: "
losetup -d $LOOPDEV >/dev/null 2>&1
cat $1 | $LOSETUP_AES -p 0 -e $2 -o $3 $LOOPDEV $IMG
ret=$?
VSUM=$(sha256sum $LOOPDEV | cut -d' ' -f 1)
if [ $ret -eq 0 -a "$VSUM" = "$EXPSUM" ] ; then
echo "[OK]"
else
echo "[FAIL]"
[ "$VSUM" != "$EXPSUM" ] && echo " Expecting $EXPSUM got $VSUM (loop-AES)."
fail
fi
losetup -d $LOOPDEV >/dev/null 2>&1
}
function check_version()
{
VER_STR=$(dmsetup version | grep Driver)
VER_MIN=$(echo $VER_STR | cut -f 2 -d.)
VER_PATCH=$(echo $VER_STR | cut -f 3 -d.)
test $VER_MIN -lt 19 && return 1
test $VER_MIN -eq 19 -a $VER_PATCH -ge 6 && return 1 # RHEL
return 0
}
[ $(id -u) != 0 ] && skip "WARNING: You must be root to run this test, test skipped."
[ -z "$LOOPDEV" ] && skip "Cannot find free loop device, test skipped."
which uuencode >/dev/null 2>&1 || skip "WARNING: test require uuencode binary, test skipped."
check_version || skip "Probably old kernel, test skipped."
# loop-AES tests
KEY_SIZES="128 256"
KEY_FILES="$KEYv1 $KEYv2 $KEYv3"
DEV_OFFSET="0 8192 @8192 8388608 @8388608"
for key_size in $KEY_SIZES ; do
for key in $KEY_FILES ; do
for offset in $DEV_OFFSET ; do
prepare "Open loop-AES $key / AES-$key_size / offset $offset"
$CRYPTSETUP loopaesOpen $LOOPDEV $DEV_NAME \
-s $key_size --key-file $key $(get_offset_params $offset) \
2>/dev/null
[ $? -ne 0 ] && echo "[SKIPPED]" && continue
check_exists
check_sum $key $key_size $offset keyfile
$CRYPTSETUP loopaesClose $DEV_NAME || fail
check_sum $key $key_size $offset stdin
$CRYPTSETUP loopaesClose $DEV_NAME || fail
check_sum_losetup $key AES$key_size $offset
done
done
done
remove_mapping
exit 0
|
