Trying to learn for future reference how to mount an encrypted partition in Knoppix 5.1 so I can rescue encrypted data.

# mount -t ext3 /dev/hdb5 /media/hdb5=
Code:
mount: wrong fs type, bad option, bad superblock on /dev/hdb5,
       missing codepage or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so
# dmesg | tail=
Code:
VFS: Can't find ext3 filesystem on dev hdb5
I know this partition is ext3 file system. Is there an extra step or different procedure for mounting an encrypted partition in Knoppix?