Ubuntu Security :: Remove The Whole Disk Encryption Without Reinstalling?

Jul 31, 2010

Is there any way to remove the whole disk encryption without reinstalling? I'm running Ubuntu 10.04.

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Fedora Security :: Remove Encryption From An Hard Disk?

Feb 24, 2009

I was trying to install Fedora 9 on my new laptop that came with Win XP. I have selected the option to wipe out all partition and create a default layout with the Encryption option selected. But that installation got stopped on the middle, therefore I have started the installation again. This time it asked for the encryption password as expected but don't know why, its not accepting my password. I am 100% sure that the password is correct but it is not allowing me to enter into the hard disk partition section.

My question is, how do I remove encryption from my hard disk? I don't need to preserve the data, I just need to use my hard disk again. Is there any boot CD that allow us to format encrypted disks without prompting for a password?

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Ubuntu Security :: Remove Home Folder Encryption?

May 3, 2010

When I installed, I selected the option to encrypt my home folder. I believe this is causing constant crashes now, since error message is user id/password related. Is there a way to remove the encryption?

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Ubuntu Security :: Change The Password For The Whole Disk Encryption?

Aug 8, 2010

Is there a way to change the password for the whole disk encryption?

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Ubuntu Security :: Algorithm Is Used With Full-Disk Encryption?

Oct 20, 2010

For some reason I can't find any documentation re: the algorithm(s) used by Ubuntu to encrypt the filesystem... Anyone know what it is?? AES?

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Ubuntu Security :: Install 10.04 Or 10.10 With Full Disk Encryption?

Apr 13, 2011

Is there a way to install ubuntu 10.04 or 10.10 with full disk encryption? I read how to do it in the 8.0 version, was wondering if it is still possible?

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Security :: 5 Of The Best Free Disk Encryption Tools?

Apr 10, 2011

Quote: The importance of security should never be underestimated. The consequences of losing data can be disastrous for any organisation. For example, the loss of a single unencrypted laptop may have huge repercussions. This could include breaching data protection legislation with the risk of a significant fine, a loss in the confidence of an organisation, as well as the risk that sensitive data may fall into the hands of a competitor or third party with malicious intent.

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Security :: Can Full Disk Encryption Be Removed ?

Nov 14, 2010

I do know about cold boot attacks. But I ran across a couple of posts/websites that had me wonder if it is possible, without the passphrase, to just remove the encryption?

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Ubuntu Security :: Cannot Get To Grub Menu After Full Disk Encryption?

Jan 13, 2010

this isn't really a security question, per se, so feel free to move. It is related to full disk LVM encryption though. Full disk didn't work for me with grub2 after running dd to a remote server, so I downgraded to grub1. No biggie. However, I have neither grub or grub2 as selected in Synaptic.Let's say I forget which I have installed. How would I determine what version of grub is installed at the moment. I'm assuming it's somehow installed on in the mbr but not on the OS. I didn't mean to do anything funky. Is that the normal setup? I'm deploying these systems to users and want to be able to troubleshoot issues in the future (hopefully that will not be needed!) grub --version does not work because it is not installed.

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Ubuntu Security :: Secure Is Encryption Via Disk Utility (palimpsest)?

Jan 18, 2010

I encrypted a harddisk via Disk Utiluty. What alogythm is it encrypted by now? Is it safe? What should I be aware about?

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Fedora Security :: Disk Encryption With Remote Passphrase?

Jul 28, 2009

I have currently a file server that runs on Fedora 9, and all other PCs (mostly running Windows XP) access the file server via SAMBA. Everything works perfectly! However, lately a home invasion in my neighborhood got me thinking. If they take my file server, my data is not protected. So, I would like to implement the LUKS partition encryption (/home) which sits on a separate disk. However, I don't quite like the decryption process at boot time. In other words, I would like to wake up the file server (WOL) remotely, and when it's done booting, I would like to log-in using the other PCs and enter the passphrase remotely to decrypt /home. Is this possible using LUKS encryption (i.e., cryptsetup)? If not, what would be another alternative to what I am trying to do using a secure encryption (so that the data is safe from thieves)?

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Ubuntu Security :: Security, Passwords & Encryption Keys?

Jun 7, 2011

I am not very security minded...I'm aware of it, and always made sure I had up-to-date overall protection in Windows but firewalls, and the blasted passwords are largely a thorn in my side!When I got my iPhone last year I suddenly discovered password managers & "wallets" to keep all that kind of information in and syncable across different devices. My life got so much easier. Of course now I need to figure out encryption keys, and how they work (I'm clueless). I also need to find a program or system that I can move my existing low-tech info (mailnly user name & passwords) that will also accomodate the increased needs of Ubuntu security and still be sync-able. I started a little research weeks ago, but my current "wallet" only exports .csv so I quit since I'm going to have to do a lot of data entry whatever I go with.So here goes:

1) what is the difference (bare bones) between using an encryption key (e.k.) vs. a standard user created password? what situations are better suited for e.k.?

2) I have seahorse (default intall with Ubuntu I guess) but the only thing in it is Login under passwords which leads to a login keyring (?) and a drop-down list of about 6-10 of the gazillon passwords I use daily. The other tabs are for keys which I don't have any concept of.

3) I know FF also "remembers" user id & passwords as you choose to have it do so. Is that information transferable into seahorse or another program?

4)I'm also (today) getting ready to really set up my system for user names & security across my little home network. How can I integrate that into whichever program/app I go with to store my pwds and keys?

5)give me links to fairly current documentation on this stuff?

6) Any program/app recommendations.Pros/cons uses, what they can & can't do or be used for, etc.

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Ubuntu :: Increasing Disk Space For 10.10 Without Reinstalling?

Apr 18, 2011

I have installed ubuntu 10.10 inside windows (windows 7) from the ubuntu home edition CD.I have allocated a disk space of 12GB. How could I increase the disk space to 20 GB without reinstalling ubuntu?

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Ubuntu Installation :: Can't Restore A Root.disk After Reinstalling Wubi

Sep 5, 2010

Since the partition of windows7 (C: ) where wubi was installed was too small, I decided to reinstall wubi into another larger partition (E: ), keeping the old root.disk. Sadly when I replaced the root.disk ubuntu cannot boot, the loader says that there is no root.disk file, although it's there... I guess there is some kind of checksum about the virtual disk toward the loader is poiting... So how can I have my old ubuntu installation back?? I still have the old root.disk.

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Security :: Acceptable Kerberos Encryption - Error "ktutil: AES256/SHA1*: Encryption Type AES256/SHA1* Not Supported"

Dec 23, 2010

I am building an active directory and using BIND9 as my DNS. To allow for secure dynamic updates from the domain, I am enabling GSS-TSIG as detailed here and here. Unfortunately, some of the commands and configurations used here seem to be depreciated, at least in the newer versions that I'm using. My issue is one of keytab encryption. I generated a keytab using ktpass.exe on the Windows Server 2008 domain controller. I have tried DES/MD5, AES128/SHA1 and AES256/SHA1, each have been turned down by ktutil on the kerberos server (FreeBSD). Each time, it outputs the following error: ktutil: AES256/SHA1*: encryption type AES256/SHA1* not supported *Respective to encryption used.

I cannot find a list of suitable encryption schemes that ktutil will accept. The FreeBSD handbook details a means of producing a keytab file, but I'm not sure how to configure the Domain Controller to use the keytab.

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Ubuntu Security :: Encrypt Everything Except Boot Without Reinstalling?

May 1, 2010

I already have Ubuntu 9.10 on my system and don't want to have to reinstall all my programs after a clean install. I want to encrypt my hard drive so it will boot and ask for a password. Does anyone know if this is possible?

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General :: Remove TrueCrypt Whole USB Encryption?

Mar 31, 2011

I've accidentally encrypted my 8GB usb stick instead of my 4GB stick and now I need to revert the encryption on the 8GB one. There doesn't seem to be an option like this in the TrueCrypt interface when I mount the USB.

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General :: Implications Of Bad Blocks When Reinstalling A Disk Image

Mar 17, 2010

Let's say I'm using one of those PCs that uses a SSD flash drive in place of a more regular HDD.

Say I burn my favorite .iso distro and install it on this PC. I install my favorite applications and seek out and install any missing drivers and generally tweak the system like you do. When I am finally happy with it, I make an image of this installation to an external USB drive.

Now, say 9 months later some of those SSD blocks have gone bad because they were erased too often. They're no longer usable. Also, because I'm a sloppy person who can't be bothered to delete redundant stuff and run make-cleans and so forth, the disk is getting pretty cluttered and takes longer and longer to do stuff.

I decide the obvious solution is to remove and save any data I need to keep, then just over-write the disk with the image I made 9 months earlier.

The question is: will the firmware be smart enough to re-map my incoming image to avoid these bad blocks on the SSD? Or am I going to wind up with some parts of the image being located on bad areas of the SSD?

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Ubuntu Security :: Encrypting / Home Partition Without Reinstalling?

Jun 12, 2011

I have Kubuntu 11.04 64-bit installed (software upgrade from 10.10) and I have a separate /home partition. I want to encrypt my /home partition (and perhaps the swap partition as well) but I don't want to have to reinstall Kubuntu. (Mostly because it was a software upgrade and I don't have an 11.04 disc.) I found a tutorial for Encryptfs via one of the stickies that mentions post-install migration, but it says that using Encryptfs on a separate /home partition is more complicated than if it were part of the root partition and that the CDs don't have any software to preserve and configure existing encrypted /home partitions. (Granted this tutorial is made for 9.04, so things may have changed.)

Also, this tutorial makes it sound like if you have your /home directory encrypted that the encrypted data is stored in a folder on the root partition. Is it done the same way if the /home directory is on its own partition? Because I don't think my root partition is large enough to have all of my /home data. (I purposely kept it small because the root partition doesn't seem to get very large.)

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Ubuntu :: Recovery From Harddrive With Full Disk Encryption ?

Jan 10, 2011

I have a bunch of pictures that I thought I had backed up but as it turns out I didn't, the problem is I formatted the drive they were on.

It is a 1TB hard drive, and it was running Ubuntu 10.10 using full disk encryption from the alternate install CD. After formatting, I installed Ubuntu Server 10.10, also using full disk encryption.

I know the encryption key for both installs (and the keys in fact are the same).

I have turned off the machine, and have stopped writing to the disk. I am hoping because it is a 1TB drive, and I have only written over it with 2GB of data, that there is a chance I can recover the data.

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Ubuntu Installation :: Full-disk Encryption On Netbook?

Jan 29, 2011

I managed to get a cheap refurbed netbook recently (Samsung N150) and I'm wanting to put Ubuntu on it. As it's also likely to be used when travelling and have things like chat logs, photos, and other such things I'd like to do full disk encryption. Also I've been pointed towards 10.4 as apparently the 10.10 netbook desktop isn't to everyone's taste.

So I tried using unetbootin to make a bootable 10.4.1 i386 Alternate usb stick, which hit the problem of no cd drive. I found an item to add to the boot (cdrom-detect/try-usb=true) which got it a little further, but at a copying stage it threw an error saying it couldn't copy off the disc.

Finally I tried making a unetbootin of the mini iso (does mini even support full disk encryption?) but that seems to hang after selecting a mirror.

EDIT: Well it seems I was just impatient on the mini ISO and after a few minutes it's gone onto time-zone, though of course this could get rather tiresome without a local mirror, especially given this may go through more than one iteration.

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Server :: Disk Encryption Vs Performance?

Jan 29, 2010

how much of a performance impact full disk encryption (say, AES 256-bit) has on disk-related activities? On one particular project I'm involved in I am trying to weigh out security vs performance issues.

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Red Hat :: Best Whole Hard Disk Encryption In Rhel 4.6?

Oct 21, 2010

Which is the best whole hard disk encryption software for RHEL 4.6. Tried Truecrypt but was not success in making it work. First had issue with fuse version, then with glibc and etc.

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CentOS 5 :: How To Deactivate Disk Encryption

Aug 2, 2009

i want to deactivate disk encryption. How can i do that?

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Hardware :: Create Extra Partition On SATA Disk Without Reinstalling RHEL5

Jan 12, 2011

I have Three disks installed, one SATA and two SCSI disks.

SCSI1: boot + RHEL3
SCSI2: home
SATA: RHEL5

I want to create an extra partition on the SATA disk without re-installing RHEL5. Is this possible?

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Ubuntu Security :: Get Encryption Software With GUI?

Feb 20, 2011

I am looking for some software (not Tryecrypt) where I can just right click a file and it will encrypt it for me. It would be nice to unencrypt on Windows but not essential.

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General :: Disk Encryption - Bitlocker Equivalent?

Jan 25, 2011

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?

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General :: Implement Full Disk Encryption?

Jul 14, 2011

The only reason why I don't use Linux (even though I prefer Linux over Windows, and can do everything faster and more efficiently) is because each time I try to learn about dm-crypt I give up.

Can someone point me in the right direction for full OTFE on Linux (like TrueCrypt)?

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Red Hat / Fedora :: Disk Encryption Key: Can The Kernel Be Recompiled For A 2,048 Bit Key

Jan 10, 2011

1. Fedora 14 has a user friendly disk encryption setup.However, there doesn't seem to be an option to change the encryption parameters during setup. Since I can handle the overhead, I would like to change the encryption algorithm and the key length for the default install.

2. I have created an additional encrypted drive (the entire HD) which claims to have its own encryption functionality (Seagate Constellation 1TB). Does Fedora use the built-in encryption mechanism by default? Is there any way to tell?

3. I can't seem to find any utility to tell me what the actual key size is for different HD's I have encrypted. "cryptsetup --help" seems to print out only the information for the default encrypted O/S which is the default 256 bit.

My problem is whether the -s option work when set to a 2,048 bit key length? Or, does it fall back to a 256 bit key length if it fails to do so? Or, does it automatically use the built-in encryption of the hardware? If the -s option doesn't work with a 2,048 bit key setting, can the kernel be recompiled to do so?

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Ubuntu Security :: Recommendations For Luks Encryption?

Jan 8, 2010

When 10.04 is released I'll encrypt my /home partition using luks. I've read that xts is good for hard drive encryption and aes is good for cipher encryption. I'm looking for something that is fairly secure without sacrificing a lot of speed.

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