Disk encryption is the process by which every bit of data on a disk is encrypted, protecting it against unauthorized persons.

learn more… | top users | synonyms

47
votes
13answers
68k views

Which TrueCrypt Algorithm is the safest?

If performance is of no concern, which TrueCrypt algorithm is the safest to use? AES Serpent Triple DES Twofish AES-Twofish AES-Twofish-Serpent Serpent-AES Serpent-Twofish-AES Twofish-Serpent
23
votes
5answers
8k views

SSH with authorized_keys to an Ubuntu system with encrypted homedir?

I recently set up a new server with Ubuntu karmic 9.10, and when I created my home directory I chose to make it encrypted. Now, after loading my authorized_keys file into ~/.ssh, it isn't recognized ...
13
votes
4answers
997 views

What software should I use to encrypt my hard drive? [closed]

I am currently running Windows 7 RC x64 on my home system, and am interested in encrypting my hard drive. I've heard good things about TrueCrypt, but am curious what other folks might suggest. I ...
12
votes
5answers
11k views

Is anyone working on an encfs client for windows?

I've been looking into encfs as a solution to encrypt my personal data. However I want to access this data both on Linux and Windows on different machines (synced through Dropbox). So far all Google ...
12
votes
1answer
8k views

How do I resize a FileVault 2 encrypted partition?

Running Mac OS X Lion. My current setup is a 250 GB partition, encrypted by FileVault2, for Lion. Old Snow Leopard install is in second half, another 250 GB partition, unencrypted, of the same disk. ...
11
votes
6answers
2k views

Want an easy to use Linux disk encryption scheme

In the interests of protecting personal info in case a laptop gets stolen, I'm looking for the best way to encrypt a Linux system. Disadvantages of whole disk encryption including swap: Pre-boot ...
10
votes
5answers
4k views

What is the easiest way to encrypt a dir? (on Ubuntu)

What is the easiest way to encrypt a directory on a Ubuntu based system? Let's say I have a laptop that is running Ubuntu 10.04, and on that I have some documents that should be kept safe (if I lose ...
8
votes
1answer
2k views

Is TrueCrypt full disk encryption on windows 8 safe to use? [closed]

Since Windows 8 is currently still not 100% supported, I was wondering if full disk encryption is more or less safe to use in Windows 8. I couldn't find any info on that on the internet, so I used a ...
7
votes
3answers
4k views

Why the results of Truecrypt and cryptsetup (LUKS) benchmarking are so different?

I want to encrypt a part of my HDD. But before that I wanted to benchmark the different algorithm available wondering if I should choose aes-xts-256 or aes-xts-512. Note: I don't have aes hardware ...
7
votes
3answers
4k views

Mac OS X full-disk encryption, with Time Machine

I want to encrypt at least my home partition on my MacBook Pro running OS X 10.5. I know both File Vault and TrueCrypt would do this, but I also want to keep on using Time Machine to back up my ...
7
votes
2answers
656 views

Full Disk Encryption with TPM, not subject to cold boot attack

Here's a passage from Wikipedia on BitLocker Once a BitLocker-protected machine is running, its keys are stored in memory where they may be susceptible to attack by a process that is able to ...
6
votes
3answers
1k views

Linux Bitlocker equivalent

Bitlocker is a harddrive encryption data protection tool which comes with Windows Vista Ultimate and 7. Does anyone know an equivalent for Linux distros like Fedora and Ubuntu?
6
votes
2answers
2k views

Does full Volume encryption put an SSD into a fully used state?

SSDs, particularly of the common MLC variety, have a limited number of writes before the memory cells wear out. Through the use of wear leveling algorithms this is effectively worked around so that ...
6
votes
1answer
453 views

Correct misaligned encrypted partitions

I have encrypted my SSD with dm-crypt/LUKS to install an Archlinux in an LVM container. Here's a graph of the structure (it's in French but should be understandable): Now I realised I should have ...
6
votes
4answers
664 views

encrypted backups for Linux and FreeBSD readable for both

I have a Linux and a FreeBSD computer, both encrypted (LUKS and geli respectively). I am wondering how to make backups that would also be encrypted and would be readable to both (so that if one of the ...
5
votes
2answers
911 views

Encrypting my laptop hard drive

I've considered encrypting my laptop hard drive for a while now, but the only thing holding m back is my Microsoft SQL Server 2008 installation. I use my laptop for development and also have some ...
5
votes
3answers
5k views

How to encrypt data on an external hard drive?

I want to secure my external (1 TB) hard drive that I use as a physical back-up for my home computer so that if the drive is stolen (eg burglary) then the data is not easily accessible by a common or ...
5
votes
3answers
4k views

How do I encrypt a Samsung Evo 840 SSD?

I've purchased a HP Envy 15-j005ea laptop which I have upgraded to Windows 8.1 Pro. I have also removed the HDD and replaced it with a 1TB Samsung Evo 840 SSD. I now wish to encrypt the drive to ...
5
votes
2answers
1k views

How strong is ZFS encryption?

I've been playing with ZFS for quite a while, and was wondering how secure the disk encryption is for ZFS and how long it would hold up under a determined attack (I'm aware some of it has to do with ...
5
votes
2answers
741 views

Linux laptop encryption

What are my options for encrypting the /home directories of my Ubuntu laptops? They are currently setup without any encryption and some have /home as a separate partition whilst others don't. Most ...
5
votes
2answers
536 views

How to encrypt my system partition?

I want to encrypt my main hard drive (where I have my OS, programs, etc.) and I have looked for tutorials online but each one seems to follow different steps, some say that I need another partition to ...
5
votes
3answers
2k views

Is it possible to run TrueCrypt without administrative privileges?

I'm looking at FreeOTFE, I don't know if it's compatible with latest TrueCrypt. Upon starting, it immediately results in an error message: FreeOTFEExplorer.exe has encountered a problem and needs to ...
5
votes
2answers
3k views

Advice on approaches to disk encryption in Ubuntu?

I'm considering encrypting the contents of my laptop, which runs Ubuntu 10.04 and has an ext4 + swap, and I'm wondering what the best options are here. I'm aware of: TrueCrypt: either block-level ...
5
votes
2answers
4k views

is there a way to stop mac osx disk encryption in progress?

I chose a 1T external drive for time machine and checked the "encrypt backups" option. I thought it will only encrypt the backups, but as it seems it is now encrypting the whole drive which has quite ...
5
votes
1answer
2k views

LVM Encrypted Physical Volume versus Encrypted Logical Volume. Am I safe?

I'm somehow new to disk encryption techniques in Linux, but I have the basic notions about encryption. Here my conditions: I need to have "full disk encryption", including "/", not just "/home". I ...
4
votes
3answers
7k views

How to setup disk-encryption with Ubuntu?

I'm interested how you can setup disk-encryption for Ubuntu, with as few hassle as possible.
4
votes
1answer
296 views

Securing a Linux server when there is potential physical access

We want to set up a Linux server (hosting Git or later SVN repositories) which should have all stored data strongly encrypted, so that if one steals the server the data cannot be read. For example, ...
4
votes
1answer
6k views

How can I mount an encrypted LVM under Windows?

I have a virtual machine with Ubuntu server with an encrypted LVM. I set up a virtual drive using imdisk to access its virtual hard drive without running the virtual machine, but I can't find any way ...
4
votes
2answers
1k views

My Intel 320 SSD - is encryption automatic?

So, I have just received an Intel 320 series SSD. They state that once I set my ATA passsword (through the BIOS), that encryption will then be active. I see no sign of this noted in the SSD Toolkit ...
4
votes
2answers
2k views

Smart whole disk imaging backup compatible with TrueCrypt whole disk encryption?

I have used Acronis TrueImage whole-disk backups for a long time, and they've saved me on numerous occasions. The ease of restoring a system when you have a 3 day old full image of C:\ is just ...
4
votes
1answer
473 views

Extracting Data from a WD MyBook External Disk

I have a WD Essentials MyBook, which was working fine as my Time Machine volume on Snow Leopard. I have since upgraded to Lion and now the disk is really slow to access. I tried to take the disk out ...
4
votes
1answer
485 views

SSD Cache with FDE (TrueCrypt, BitLocker, etc) on Windows

I wanted to bring back an old question, but with a twist. It has been answered, how an SSD could be used as a caching drive for a larger, mechanical drive. What I am looking for is to have the same, ...
4
votes
1answer
376 views

Does a Windows 7 system volume encryption tool exist that allows remote unlocking via ssh during boot phase?

Does a tool/method exist which allows encrypting a Windows 7 system volume while providing the possibility to remotely unlock it via ssh during the boot phase? Is it even possible with Windows 7 (I ...
3
votes
4answers
7k views

Detecting a TPM chip?

I have a HP Mini 311-1000CA netbook running Windows 7 Ultimate. I'd really like to encrypt the harddrive using BitLocker but I am unsure as to how to work out if the Mini has a TPM chip or not. Any ...
3
votes
2answers
3k views

How to use ATA security on a hard disk in practice?

My SSD HD supports ATA Security. Does Macbook EFI and linux support it? I know hdparm does. Who will do the unlock at each bootup? Can I still set a password without erasing the disk? Update: removed ...
3
votes
3answers
830 views

Light and efficient file encryption for Ubuntu.

I'm using ubuntu 9.10. The system is installed on one partition, and my /home folder is on another partiton. I'm looking for a way to encrypt both partitions in Ubuntu 9.10, I'm NOT looking for ...
3
votes
2answers
48 views

Once opened, isn't a volume encrypted using cryptsetup readable by all users?

A volume is encrypted using cryptsetup. Once cryptsetup open ... has been executed, isn't the mapped device then readable by all users on the host? If they know the file system, they can trivially ...
3
votes
1answer
4k views

Decrypting a TrueCrypt drive pulled from another machine

I work in a corporate environment and we are now required to encrypt laptops. I have already encrypted about 5 or 6 out of 40. I still have a few questions before we go all out with TrueCrypt. Can ...
3
votes
3answers
825 views

Can drive encryption cause faster drive failure?

For about the past two years I've used TrueCrypt to encrypt my entire hard drive. During this time I've had a complete hard drive failure (data unrecoverable, had to RMA the drive) twice. I've never ...
3
votes
3answers
3k views

Bad performance with Linux software RAID5 and LUKS encryption

I have set up a Linux software RAID5 on three hard drives and want to encrypt it with cryptsetup/LUKS. My tests showed that the encryption leads to a massive performance decrease that I cannot ...
3
votes
1answer
4k views

Trying to delete directory with “rm -rf”, but get message that it's not empty

I've tried deleting a directory using "rm -rf" and I'm getting the message "Directory not empty": Bens-MacBook-Pro:please benjaminhocking$ ls -lart empty_directory/ total 16 drwxr-xr-x 5 ...
3
votes
1answer
566 views

HDD full disk encryption. Is it necessary to secure erase all data before?

I want to create a secure backup. Therefore, I'll encrypt an external HDD using TrueCrypt. I wonder if it is necessary to do a secure erase of all remaining data before? I ask this because I heard ...
3
votes
2answers
2k views

Does FileVault2 on OSX Lion encrypt bootcamp partitions?

When using FileVault2's Whole Disk Encryption, does it encrypt a bootcamp partition? If not, does it still allow access from Windows to the encrypted Mac disk? What about Parallels access of bootcamp ...
3
votes
1answer
2k views

Mount an encrypted volume stored on a remote server over ssh/ssl/vpn/nfs/webdav/samba?

What is the best tools to use to mount an encrypted volume stored on a remote server? The encryption/decryption should be done on the client side. I think about first using NFS to mount a remote ...
3
votes
2answers
704 views

How do I install Ubuntu 10.04 with full disk encryption alongside other operating systems?

I always used the Full Disk Encryption option of the alternate installer, but now I need to keep another OS running in the first partition but that option seems only to be able to use the whole disk. ...
3
votes
0answers
551 views

Does Linux support self-Encrypted Disk API?

In this article it is shown how easy it is to bypass BIOS ATA passphrases, and it ends with that using the disks self-Encryption Disk (SED) API from within the OS would not give a performance hit. On ...
3
votes
1answer
145 views

Win 7 full disk encryption with backup

I have a win 7 laptop that I would like to fully encrypt the hard drive and back up the encrypted hard drive routinely. Should I use TrueCrypt (not running Ultimate)? And how would I access the ...
3
votes
2answers
87 views

Speed of encrypted flash drive

I've encrypted my Transcend Jetflash flash drive (16 GB, USB2, ext2). Before the operation, the flash drive's speed was: # dd if=/dev/zero of=/media/JetFlash/file bs=1M count=256 Results with: 26,5 ...
3
votes
2answers
344 views

Scramdisk for Linux (SD4L)

I can't find any evidence of people using Scramdisk for Linux anywhere. Is it a dead project, or is it just too new for people to trust its reliability and security? Have any of you used it for any ...
2
votes
3answers
5k views

How to change pass phrase of full disk encryption?

I installed Ubuntu 12 with full disk encryption, and now I want to change the pass phrase. How can this be done?