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

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2
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1answer
119 views

What is the command to retrieve the pass phrase of an encrypted home directory?

I remember setting a password to encrypt my directory when I installed Ubuntu, and running a command to retrieve a pass phrase in case I lost the password. Can anyone tell me what is the terminal ...
1
vote
1answer
343 views

GRUB missing after removing drive with Ubuntu

My work laptop is an HP EliteBook with one hard drive in it. On that hard drive is a encryption program that boots up called "safeboot", you enter your username and password and then Windows boots up....
0
votes
1answer
289 views

No private directories found when I do have one?

I have 2 hard drives that are both running Ubuntu 12.10. One of the hard drives doesn't boot correctly but has the files I want to get from it. It also has an encrypted home directory and the ...
1
vote
1answer
723 views

Can I install Windows when a full encrypted Ubuntu disk is installed?

I am running a full-disk encrypted Ubuntu 12.10. Can I install Windows alongside, adding it at the boot menu on this machine? If so, how?
2
votes
0answers
481 views

How to recover encrypted deja-dup backup from new install?

I have a backup of my documents stored in the Ubuntu One cloud. I used the default deja-dup backup application and I have enabled encyption. I was running Ubuntu 13.04 daily build but as the school ...
0
votes
1answer
183 views

Ubuntu and MacOS X full disk encryption easily possible?

I got a Macbook Pro 9,1 (mid 2012) and plan on finally switching from MacOS X as main system and Windows for games, to Ubuntu as main one and MacOS X just for firmware updates. How would I do that, ...
1
vote
1answer
2k views

How to lock and encrypt folder and files

I installed cryptkeeper in my laptop and when I click on the icon, it is not opening up or responding. I'm using Ubuntu 12.10 64-bit version. Please help me on how to use this software or tell me how ...
1
vote
1answer
735 views

Ubuntu 12.10 Encryption Details

Good Morning! Short version of the question below. Please help me understand the encryption features in Ubuntu 12.10. Installing Ubuntu, I opted both for the full disk encryption option as well as ...
2
votes
1answer
1k views

How do i stop Ubuntu from asking for a password to decrypt my drive on start up?

Ubuntu keeps asking for me to decrypt my drive on start up. This is expected, because I had set up full-disk encryption. How do I stop this now?
0
votes
1answer
719 views

Gpg symmetric decryption reduce the passphrase remember time

i used this command to decrypt my file gpg -d myfile.gpg it asked me for passphrase when i entered it showed me the content of the file now when i run the command again it did not ask me the ...
2
votes
0answers
457 views

How to remove encryption from harddrive in ubuntu 12.04?

Greetings I have "inherited" a Ubuntu 12.04 system installed on a Sun server. Judging by the output of the history command the system is broken from all the ./configure --prefix=/usr && make &...
5
votes
1answer
206 views

Is the Ubuntu “Restore Test” program legitimate?

I have an encrypted home directory, and today when I came to my computer, there was a prompt I had never seen before labeled "Restore Test", which asked me to input my home directory decryption key. ...
2
votes
1answer
1k views

How to setup an encrypted voip structure?

What is the simplest way to set up a voip structure in a Linux machine with the following features: 1) Using free software 2) For computer-to-computer calls: end-to-end encryption set by the users, ...
15
votes
1answer
7k views

New encryption feature in Ubuntu 12.10: home encryption or full disk encryption? or both?

How do I correctly encrypt the entire partition when installing Ubuntu 12.10? I ask because the new Ubuntu installer now shows two encryption options. After choosing "Encrypt the new Ubuntu ...
9
votes
3answers
19k views

How to disable cryptswap?

How can I disable cryptswap? I would like an unencrypted swap like before. This is on an ubuntu 9.10 system.
6
votes
1answer
2k views

Auto-mounting an encrypted USB hard drive

How can you configure a headless Ubuntu server to auto-mount an encrypted USB hard drive? I found this similar question, which explains how to mount the drive from the command line, but the author is ...
1
vote
0answers
54 views

.bashrc not run when SSH-ing in as a user who has home dir encryption [duplicate]

If I SSH into an Ubuntu 12.04.1 LTS server as a user with home dir encryption, I get a really plain shell (no default .bashrc run). If I log in via console (of course causing the home directory to be ...
2
votes
1answer
3k views

Is there a way to change my home folder to encrypted after upgrading to 12.04 [duplicate]

I somehow missed the option to encrypt my home folder when upgrading to 12.04. It was not encrypted in 11.10. How might I do so without a re-installation? Or can I? I'm fairly new to Ubuntu so please ...
3
votes
1answer
526 views

USB encrypted VM with Ubuntu

New User here trying to get involved with Linux. Let me first say that I am enthralled with the Linux community, everyone is very knowledgeable and willing to offer input. Question: I would like to ...
3
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2answers
2k views

How do I make space in /boot/?

I have /boot/ on a separate partition from /, and /boot/ is 98% full. How do I make more space on it?
7
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4answers
7k views

How can i move an encrypted home directory to another partition?

How can i move a enrypted home directory to another partition? Are there differences between moving an unencrypted home directory to another partition and an encrypted home directory? Perhaps does ...
5
votes
1answer
2k views

How can I check if my computer has AES-NI support?

I've heard that disk encryption works reasonably faster when CPU supports AES-NI. How can I check if my CPU supports it? Does the Ubuntus default encryption (dm-crypt) use it by default or do I have ...
3
votes
1answer
1k views

Can I encrypt my disk after installing?

I did not chose to encrypt the full disk when I installed Ubuntu. Can I do it now?
1
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2answers
474 views

Firefox banking certificates

I'm using online banking on Firefox that requires me to import my personal certificate into the browser I use. Bank access is via their webpage, using pass and personal certificates. My question is, ...
0
votes
1answer
371 views

My LUKS encrypted device works on one computer but not on another - why?

My LUKS encrypted device works on one computer, the one where I created it on, Ubuntu 12.04. But when I attach it to another fairly fresh 12.04, syslog tells me "unknown partition". Any ideas why ...
2
votes
2answers
2k views

How do I set up Full Disk Encryption on an SSD?

I have a new Lenovo Thinkpad with an Intel SSD. I want to set up full disk encryption with pre-authentication boot. From reading I see there is a Guided Setup with Encryption option on the alternate ...
0
votes
1answer
406 views

How do I get and keep access to encrypted home dir on an external drive?

I have a clean new install of 12.04 on my internal drive. On my external drive I have everything that used to be on this drive. The file I'm concerned with right now is my old home folder from 10.04....
3
votes
1answer
283 views

How do I delete cached password for encrypted volume?

I am novice Ubuntu user. For laughs I encrypted an external USB drive and put a punch of secret stuff on it. It used to be that every-time I would attach the drive I would be challenged for a ...
0
votes
1answer
2k views

Laptop hdd encrypted with LVM full disk encryption

If I have full disk encrypted my laptop which has Ubuntu 12.04, will the thief be able to extract my files from the swap partition? I am assuming s/he will not be able to extract anything from the ...
1
vote
3answers
831 views

deja-dup backup encrypted home

Some days ago i have encrypted my home thanks to ecryptfs-utils. Now i have a big doubt regarding deja-dup and the future backup: can i backup the files that are in my home folder? will they be ...
2
votes
1answer
3k views

Mount encrypted home during boot (dm-crypt, luks)

I just installed Ubuntu 12.04 on my notebook having kept an old luks encrypted partition on my drive. This partition shows up in the file manager an can be mounted from there into /media/[UUID]. Now I ...
0
votes
1answer
242 views

Are there adverse effects from (or a better way than) writing to /run or /dev/shm to protect temporarily unencrypted data?

I am having trouble finding an answer to a question about protecting unencrypted data. I run Ubuntu 12.04. Although I'm not sure that it's relevant, I'll also mention that I use an encrypted home ...
8
votes
1answer
2k views

Does the system suffer in performance because of full-disk encryption?

I have a netbook that uses an SSD (Corsair Force 3 SSD (5.02)). When installing Ubuntu on it I chose an encrypted file system with EXT4. My question is: Does the file system suffer any performance ...
0
votes
1answer
477 views

How do I fix the “no such partition” error from GRUB?

When I boot my computer I get the following error: Welcome to GRUB! error: no such partition. Entering rescue mode... grub rescue> My system has Windows 7 and Ubuntu in dual-boot; Ubuntu is ...
2
votes
0answers
555 views

Automatic incremental backups to an encrypted external hard disk

What is the best way to do automatic incremental backups (and if possible to store more than a single version of the same file) to an external usb hard disk with full hard disk encryption? I don't ...
4
votes
2answers
6k views

Cryptswap boot error - can't mount?

I believe i have my swap set up but am not sure because on start up it says that it is something along the lines of "could not mount /dev/mapper/cryptswap1 M for manual S for skip". But it appears to ...
2
votes
0answers
56 views

Encrypted LVM on multiple drives [duplicate]

Possible Duplicate: Full Disk Encryption with LUKS: auto mount second volume I want to set up encrypted LVM when I install Ubuntu. I have an SSD and an HDD and I would like to put /boot, swap ...
2
votes
1answer
220 views

Install Ubuntu on full encrypted HD?

I have here a windows on a full encrypted hd. I cannot disable this encrypted hd. Everything should be unchanged, I just want to Install Ubuntu on an extra partition. But here I think the problem is: ...
5
votes
2answers
6k views

How to obtain a S/MIME certificate for e-mail encryption?

There are parties, e.g. enterprises, that uses S/MIME certificates for e-mail encryption. To my understanding Thunderbird has support by default for S/MIME. But I have not found a way to obtain a ...
4
votes
2answers
3k views

Is it possible to grow a luks-encrypted external raid5 array?

I'm planing to buy an external raid array (hardware raid5). My intention is to outfit it with 4 disks initially and encrypt it using luks and dm-crypt. My question is: Will I be able to hot swap disks ...
0
votes
1answer
1k views

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 ...
0
votes
1answer
171 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 ...
0
votes
0answers
438 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 off,...
2
votes
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 ...
6
votes
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 ...
1
vote
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 ...
0
votes
1answer
505 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 ...
0
votes
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?
1
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1answer
109 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 ...
1
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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 care ...