How to encrypt-decrypt an ext3 partition on Linux
This document (3053870) is provided subject to the disclaimer at the end of this document.
Novell SUSE Linux Enterprise Server 9
This can be used for situations where the partition needs to be encrypted for transport of the drive just incase it gets lost.
1. modprobe loop_fish2
2. Create an ext3 partition
3. losetup -e twofish /dev/loop0 /dev/sda1 (or your partition you created) - At this point you will be prompted for a password that needs to be over 20 characters.
4. mkfs.ext3 /dev/loop0
5. mount -t ext3 /dev/loop0
7. losetup -d /dev/loop0
Mount and decrypt:
1. modprobe loop_fish2 (If it has not been previously loaded)
2. mount -t ext3 /dev/sda1 -oencryption=twofish - You will be prompted for your password you set when you encrypted it.
If the encrypted mount point is required to automount on reboots:
1. On the new system copy the /etc/cryptotab file from the old machine to mount it via /etc/init.d/boot.crypto at startup.
2. Here is an example of what that file entry would look like:
/dev/loop0 /dev/sda1 /encrypt_part ext3 twofish defaultsNOTE: The encryption key is usually not saved anywhere but the user is prompted at startup for the right key.
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- Document ID:3053870
- Creation Date: 21-Jul-2006
- Modified Date:03-Mar-2020
- SUSE Linux Enterprise Desktop
- SUSE Linux Enterprise Server
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