- # 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
-
- $CRYPTSETUP loopaesOpen $LOOPDEV $DEV_NAME -s $2 --key-file $1 >/dev/null 2>&1
- ret=$?
- VSUM=$(sha256sum /dev/mapper/$DEV_NAME | cut -d' ' -f 1)
- if [ $ret -eq 0 -a "$VSUM" = "$EXPSUM" ] ; then
- echo -n "[OK]"
- else
- echo "[FAIL]"
- echo " Expecting $EXPSUM got $VSUM."
- fail
- fi
+ 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 $offset
+{
+ # Fill device with zeroes and reopen it
+ dd if=/dev/zero of=/dev/mapper/$DEV_NAME bs=1k $LOOP_DD_PARAM >/dev/null 2>&1
+ sync
+ dmremove $DEV_NAME
+
+ EXPSUM=$(get_expsum $3)
+ $CRYPTSETUP loopaesOpen $LOOPDEV $DEV_NAME -s $2 --key-file $1 $(get_offset_params $3) >/dev/null 2>&1
+ ret=$?
+ VSUM=$(sha256sum /dev/mapper/$DEV_NAME | cut -d' ' -f 1)
+ if [ $ret -eq 0 -a "$VSUM" = "$EXPSUM" ] ; then
+ echo -n "[OK]"
+ else
+ echo "[FAIL]"
+ echo " Expecting $EXPSUM got $VSUM."
+ fail
+ fi