Questions about encryption such as home folder encryption, partition encryption and file encryption.

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Is it possible to encrypt ubuntu 12.04 filesytem without erasing Data

I'm using Acer notebook with windows7 and ubuntu 12.04 LTS Desktop installed in separate drive. I want to encrypt my ubuntu file system. I was trying with truecrypt. In windows 7 I'm not getting any ...
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1answer
168 views

How to modify partitions after install?

I wanted to have Ubuntu with full disk encryption on one big partition, and Windows on a small one. In 12.04, only the Server Edition installer has full disk encryption, so I used that and then ...
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0answers
436 views

How do I delete the boot passphrase?

I'm using ubuntu 12.10 and I set it up to have a password to login, and apparently, I also selected to have a password on boot-up. I went into my BIOS and made sure start-up/HDD password is turned ...
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1answer
3k views

Problems importing own CA Certificate

So, I have created my own little CA for my own purposes (inside my network, etc) and I know that the setup works (I can directly import the key into applications, and they connect to the server using ...
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1answer
3k views

Full Disk Encryption with LUKS: auto mount second volume

TrueCrypt on Windows can auto mount volumes that use the same passphrase as the boot volume. You enter the passphrase only once. Is there a way to do this with LUKS? Background: I'm currently ...
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1answer
1k views

How to benchmark a software's performance

How can I benchmark the performance of a particular software not complete system? I know various tools are available for system benchmarking. But I want to benchmark the performance of a particular ...
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1answer
504 views

Cant mount cryptswap1 ?

From the reading I've done, it seems it's having issues mounting the encrypted files. The guys here: could not mount /dev/mapper/cryptswap1 Seem to be suggesting how to fix it, but I am new to Linux ...
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1answer
53 views

Will simple encryption be coming to 12.04

Will the simple encryption check box (on Ubuntu 12.10 live cd) be coming to the Ubuntu 12.04.x release?
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1answer
107 views

Finding out what takes up so much space (encryption related)

so I just followed this guide to remove my home encryption: http://pastebin.com/ntnLBfcr But apparently there is something on my partition that takes up about 22GB of space (which is the same amount ...
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0answers
60 views

Security aspects of home dir encryption [duplicate]

Possible Duplicate: Is there a security risk if a password can be reset easily? Changing the login password will automatically make an encrypted home directory re-accessible, as PAM takes ...
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1answer
417 views

Use encrypted home or a ATA password on a Intel 330 SSD?

I plan to buy a Intel 330 SSD (encrypts all data whit AES 128) and use it in a Asus EeePC 1215N (supports ATA password) whit the latest *ubuntu and Windows 7. I'm a fair paranoid user and security ...
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1answer
128 views

Does home directory encryption depend on gnome keyring?

My gnome-keyring has somehow gotten messed up. It prompts for a password (that I know I never provided - yes I chose 'unsafe storage'). None of the possible passwords that I use (including empty) are ...
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1answer
306 views

How can I set up a triple boot with encrypted system partitions and shared /home?

I wanted to run 12.04 (32 bit), 12.10 (64 bit) and Windows 7 with full system encryption on either one of the Ubuntu installations and preferably a shared /home partition (at least the data with ...
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2answers
339 views

Cannot access deja-dup backup

My laptop is being repaired and I need to access the files on my encrypted HDD (which I regularly back up with Deja-Dup). Is there a way of accessing these backed-up files through WIndows or mac?
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1answer
2k views

Disk '______' doesn't contain a valid partition table

Having recently run through EnableHibernateWithEncryptedSwap, I now get 3 separate 'Disk doesn't contain a valid partition table' when I run sudo fdisk -l: Disk /dev/mapper/ubuntu--t10194-root ...
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1answer
587 views

grub2 - Finding an encrypted Debian

I have a Triple-Boot-System, with Windows 7, Ubuntu 12.10 and Crunchbang (a Debian derivative - unstable Debian at that). I am trying to get all encrypted: Windows with TrueCrypt FDE, chaining grub ...
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1answer
929 views

Should I use Logical Volume Management and Encrypt the installation on SSD?

Should I enable Logical Volume Management on my SSD? What i want to know is if enabling either encrypt the "encrypt the new ubuntu installation for security" option or the "Use LVM with the new Ubuntu ...
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1answer
233 views

How to enable home directory encryption for a particular user?

I prefer to have a dedicated "administrator" user for technical purposes and that was one I've set up during installation. I've also refused to encrypt the home folder of the user. Now, as I've added ...
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1answer
292 views

how to resize an encrypted logical volume?

I installed Ubuntu with encryption and LVM on my entire haddisk... Now I want to resize it. How do I do This... Following this link gave me errors on step 2 - How to resize a LVM partition? error ...
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1answer
335 views

New lvm install to pick up existing home drive and reinstate swap partition

I've read so many variables on what I'm trying to do, I thought it better to ask outright. I've been through a few installs and upgrades of Ubuntu but never had my system (root) drive encrypted. Just ...
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2answers
218 views

How to find out more about encrypted partitions?

I just installed Ubuntu 10.04 with the alternate CD. I'm using a encrypte LVM. So all my partitions should be encrypted. But how do I find out, if they are encrypted and how (AES?, bit?,...) Thanks ...
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0answers
1k views

Decrypting ~/.Private/ folder

Okay, so I just realised that my ~/.Private/ folder is huge (22GB) and that my ~/Private folder is empty. I tried decrypting the folder with sudo ecryptfs-mount-private, I entered my passphrase ...
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9answers
770 views

What's the best way to store a passphrase?

I've recently enabled Ubuntu's encrypted /home/ directory features and I was asked to remember a passphrase in case I would need to recover the data manually. What is the best way to store this ...
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0answers
354 views

Auto-mount filesystems on boot fails (12.10)

I have a Compaq HP 8200 slim desktop running 12.10 with encrypted partitions (set up with the text-based installer). Everything's working fine, except... When I boot the computer, my /boot and ...
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1answer
271 views

How to make dm-crypt ask for password only once?

I have several raw volumes with cryptsetup-luks containers filled with my data and ubuntu asks me for password for every encrypted volume even when passwords are the same. How to make it to try the ...
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3answers
246 views

How do I encrypt the / partition but not the whole disk?

I'm aware of encrypting home folders, but I want to use LUKS encryption to encrypt my root partition, but LEAVE room for a /backup partition that is not encrypted. The alternate cd requires encrypting ...
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1answer
3k views

Store the passphrase of encrypted disk in /etc/crypttab encrypted

I'm wondering, if I can store the passphrase of an encrypted disk in /etc/crypttab encrypted - and only possible to decrypt that by that OS, where I created. Is it possible? (because, I want auto ...
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1answer
4k views

swapon --all --verbose : 'read swap header failed: Invalid argument'

Recently ran through EnableHibernateWithEncryptedSwap and ran the following command: swapon --all --verbose and received: 'read swap header failed: Invalid argument' How do I fix this? Here's some ...
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1answer
2k views

After Installation Whole Disk Encryption? 12.04

I know some fragments of this question have been asked in previous posts and I have reviewed them - however I have a more thorough question... I did not choose to do whole disk encryption when I used ...
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3answers
61 views

Possibility to encrypt files to only be used on the current PC

Is it possible to do the following: Allow user to access anything on PC Encrypt information in a way that it can only be accessed from that particular PC. If user tries to clone/dd/gpart copy the ...
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2answers
400 views

How to open encrypted partition, knowing the passphrase?

I just installed Ubuntu 12.04 with the encrypting option. Soon after I found that I have lost my Windows Vista and all my previous partitions as the in the new Ubuntu only one hard drive with ...
0
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1answer
643 views

blkid encrypted partition to get UUID

Partition is created with: cryptsetup -y create tmp1 /dev/sdc3 sudo blkid /dev/sdc3 gives nothing and partition sdc3 cannot be mounted. Am i rigth that partition created with cryptsetup create ...
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1answer
310 views

Mounting an encrypted partion Error

Using the disk utilities in ubuntu 11.04, i had encrypted a partition with a passphrase. Each time i used to click on the partition to mount, it used to ask me the passphrase and get mounted. All was ...
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2answers
2k views

How do I install Ubuntu with encrypted root, home, and swap partitions?

I would like to install Ubuntu 12.10 with two features: partitioning of my disks (/ and /home should be separated, plus eventually a swap partition) encryption of those partitions How should I do ...
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1answer
482 views

Black screen on login, can get thru decrypt disk and access command line but no GUI

Running 12.04 64 bit fresh alternative install, with disk crypto on a new Lenovo laptop Install didn't connect and install modules, even though I had the network cable plugged in and don't have any ...
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3answers
856 views

Can I encrypt whole hard drive when dual boot Ubuntu/Win 7 installed on same drive? If so what program?

I am seeking a program that can encrypt a whole hard drive when Ubuntu 12.04/ Windows 7 installed on the same drive (different partitions) using a grub loader. I cannot seem to get TrueCrypt to accept ...
4
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1answer
3k views

Swap encryption and hibernating

I run Ubuntu 12.04 on my laptop, with an encrypted home folder + swap partition. Before I had this encrypted setup, I used to have my hibernation enabled. I found this documentation on how to enable ...
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2answers
4k views

Using portable Mode for true crypt for crypting Portable HDD , USB etc

I was wondering how to encrypt my external HDD so that my data would be safe AND accessible from any OS platform (Windows and Linux). So I went through many posts and forums and found out the best ...
2
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2answers
520 views

Order in which passphrase is asked for encrypted volumes

I have installed 12.10 on a machine with two disks. The root partition is on one disk, the swap partition on the other. Both disks are encrypted and I have added the corresponding entries to ...
3
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0answers
662 views

How to create dm-crypt device in LXC?

On one LXC container I need to put sensitive data, preferrably stored in dm-crypt encrypted filesystem. When I write sudo cryptsetup luksFormat --cipher aes-xts-plain --size 512 ...
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1answer
497 views

Problem with hard drive space

I have a problem, my .private is using the 100% of my free hard drive space, i have no idea of how to solve this... Why is file is using every bit on my hd, how can i fix it? This is the menssage of ...
6
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1answer
6k views

How will 12.10 disk encryption affect performance?

As the title suggests. Massive performance degradation? And what technology does it use?
2
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1answer
2k views

How to encrypt php folder under /var/www?

I need to encrypt the folder /var/www/test. The folder contains PHP files. The goal it to prevent any user to read the php content AND if the HD is mounted on another computer, the /var/www/test ...
21
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2answers
12k views

How to use https with apt-get?

Does apt-get use https or any kind of encryption? Is there a way to configure it to use it?
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2answers
3k views

Encrypted LVM not accepting my passphrase anymore

I have Ubuntu 11.04 on Thinkpad X41 and have been using it for a couple of months. From time to time System Update used to run and show me a list of recommended updates. Finaly, yesterday I accepted ...
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1answer
265 views

Accessing Windows Encrypted partition in Ubuntu

I have a windows partition which has been encrypted by Credant Mobile Guardian. The windows AD credentials are used to encrypt the files. And they are encrypted using an AES 256 encryption algo. ...
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1answer
619 views

Encryption And Decryption during Login and Logoff

Can you tell me that how encryption and decryption of files and folders work in linux or Ubuntu 12.04 LTS ? And also tell me how i can implement encryption and Decryption of files and folders in ...
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3answers
1k views

How to enlarge encrypted swap partition?

I have added some RAM to my netbook. I'd like to save an option to hibernate my computer, so I have to increase my SWAP from 2GiB to 4GiB. My /etc/fstab looks like this: ...
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2answers
12k views

/etc/crypttab not working

I used the Disk Utility to create an encrypted volume on an external drive. When I click the Unlock Volume button in that program, it mounts the drive for me. Now, I want to automate this process so ...
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0answers
1k views

The disk drive for / is not ready yet or not present

Unfortunately I experienced a power failure during an update from Ubuntu Server 10.04 LTS to 12.04 LTS (it was a power failure of more then 40 minutes so batteries charge of the UPS weren't enough). ...