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

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3answers
200 views

Is there a way to test if I will be able to login again?

I messed up with my files... Again... Now I am concerned if I will be able to login again once I logout. Is there a way to test if the essentials files are all there? My home was encrypted during ...
7
votes
1answer
449 views

Sharing an encrypted home directory between Ubuntu installs

I am trying to "share" a home directory between two separate Ubuntu installations. On my HDD I have an Ubuntu 11.04 installation with a separate /home partition that uses encryption. My data currently ...
6
votes
3answers
4k views

14.04 with FDE and swap is missing

Helo I have a fresh install of 14.04 on a laptop with an SSD hard drive. When installing I turned on Full Disk Encryption as well as encryption of home folder. Partitioning was left to the ...
6
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2answers
4k views

How do I access an encrypted home folder from a dual-boot machine?

(This might not be an Ubuntu-specific question?) When I installed 9.10, I opted to encrypt my home folder using ecryptfs, but then I discovered this locked me out of my ext3 partition when I tried to ...
6
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4answers
1k views

Filesystem that gives an encrypted view of a directory—the inverse of EncFS

Currently I'm using EncFS to encrypt my directory "confidential" to ".encconfidential" and sync that encrypted directory using an online service (e.g. Dropbox, UbuntuOne etc). However my entire disk ...
6
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2answers
1k views

Does ecryptfs-setup-private use real time encryption?

I'm trying to encrypt some sensitive files on my computer, and I'm trying to figure out what the best option is. I'm considering using ecryptfs-setup-private or a True Crypt file container. I like ...
6
votes
3answers
1k views

Connecting to WPA2 network from console

How can I connect to a WPA2 Encrypted Network from the Terminal/Console? I've wanted to remove the whole x-window system and use a Terminal based system only to free up any available memory and ...
6
votes
1answer
3k views

Using word list to brute force encrypted partition

I used the Disk Utility to encrypt an external HDD about a month ago. Now it seems that I have forgotten the password. I have formed it according to a set of rules, so I have generated a word list (...
6
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4answers
3k views

How to encrypt external devices using a cross-platform solution?

How can I encrypt an external device (i.e. USB keys, external hard-drives, memory sticks, etc.) so that it would subsequently be readable/writable on any computer that I plug it in? For instance, it ...
6
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1answer
8k views

What is “/dev/mapper/ubuntu--vg--root”?

I installed Ubuntu 14.04 recently. During the installation I did not create a separate partition for my home folder. I also accidentally encrypted my home folder. When i did sudo df I got the ...
6
votes
1answer
6k views

How will 12.10 disk encryption affect performance?

As the title suggests. Massive performance degradation? And what technology does it use?
6
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3answers
3k views

How do I encrypt my /tmp directory?

After reading this question about how often tmp is cleared, it would be best for our setup if tmp is encrypted. How do I encrypt it? My fstab looks like this: proc /proc proc ...
6
votes
1answer
1k views

SSH remote user need to be logged in?

I'm trying to set up an SSH server. I put my public key in the authorized_keys file, made sure the permissions were correct, etc. When I restart the server (really just Ubuntu 12.04 desktop) and I ...
6
votes
1answer
4k views

How do I encrypt a dual boot system?

I have a dual-boot laptop with four partitions - Windows, swap, Ubuntu (OS) andUbuntu /home. I need to do full disk encryption on it. Ubuntu is running 12.04, Windows is Windows 7 Home Premium.
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 ...
6
votes
1answer
5k views

how to mount / with encrypted lvm root during installation?

In order to understand Linux better, I'm trying to manually configure an encrypted root lvm partition . I have already tried this with the Ubuntu server installer by choosing the lvm encrypted option ...
6
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4answers
221 views

How do I add myself back in sudo group in Encrypted HDD of 16.04 with Strict Security Policies?

I know the threads How do I add myself back as a sudo user?, Mounting encrypted LUKS partition from Live CD, ... This thread is about how to add a sudo user back without root and other strict security ...
6
votes
1answer
3k views

Kubuntu 11.04 + Windows 7 dual boot laptop drive encryption

I already know how to create a Kubuntu/Win7 dual boot. What I would like to do is to encrypt both operating systems. I use Kubuntu as my main OS, and Windows 7 for casual gaming or prolonged Visual ...
6
votes
1answer
943 views

Does encrypting the hard drive affect file sync with programs like Dropbox, Ubuntu One, Spider Oak, Insync, and others?

For the last few months I've been having a lot of problems syncing with two computers that I reinstalled and encrypted the drives. It is happening with all the programs I mention in the subject. Can ...
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 ...
6
votes
2answers
1k views

Full disk encryption - separate home partition

How to create separate /home partition when using full disk encryption feature in the Ubuntu 12.10 installer?
6
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1answer
2k views

Please enter passphrase for disk .How to fix it?

I'm using Ubuntu 15.04. I don't know what has happened: when I start and enter the passphrase, this message appears: Please enter passphrase for disk ubuntu--vg-swap_1 (cryptswap1) on none! Please ...
5
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4answers
2k views

How to encrypt a single folder on my external hard drive? [duplicate]

I'd like to encrypt a single folder in my external hard drive. Which GUI software should I use?
5
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2answers
2k views

Does hibernate work with an encrypted home dir in maverick?

My machine no longer resumes properly after hibernation. However, it used to until recently. When trying to figure this out, I've seen lots of people say that hibernate doesn't work with encrypted ...
5
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2answers
1k views

Is there a FileVault alternative for Ubuntu

Is there a FileVault alternative for Ubuntu that I can download from the software centre?
5
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2answers
21k views

How large should I make root, home, usr, var, and tmp partitions?

i install ubuntu server 10.04, have 64 Gb VHD. And want to separate partitions in this mode: /dev/xvda0 p on swap (2 Gb) /dev/xvda1a0 e on /boot (128 Mb) /dev/xvda1a1 e on / type ffs (local) /dev/...
5
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2answers
2k views

How to truly secure a hard-drive?

When I boot from an USB stick into my laptop I am able to mount and connect through chroot to the my hard drive and browse my files without a problem, while this has been something very very useful in ...
5
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3answers
3k views

unable to unmount encfs encryped folder in cryptkeeper

I have encfs encrypted directory mounted with cryptkeeper. If I try to unmount that directory from Nautilus by pressing "eject" button it will show the following error: "unmount: /home/xxxxx/Encrypted ...
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 ...
5
votes
4answers
2k views

How to encrypt /var/www?

I want encrypt my /var/www folder so I and apache had access. How can I done this? I tried use ecryptfs, but my sites does not work. Please write example, or link for manual.
5
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2answers
293 views

ecryptfs and login passphrase vs mount passphrase

I installed ecryptfs-utils and used it to create a Private encrypted folder in my home directory. During creation of Private encrypted folder I was asked for a login passphrase and a mount passphrase....
5
votes
1answer
1k views

Ubuntu 15.04 USB devices powered off at encrypted root password prompt

Since my update from Ubuntu 14.04 -> 14.10 -> 15.04 it sems that i cannot boot my system anymore as i am stuck at the password prompt when ubuntu appempts to mount my encrypted root partition. The ...
5
votes
1answer
1k views

Mount on filesystem of type eCryptfs explicitly disallowed due to known incompatibilities

I get this error when I'm trying to do sudo mount -t ecryptfs folder1 folder2 in my home folder (encrypted by ubuntu) I tried the same command but folders at /tmp, it worked as expected. The error ...
5
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1answer
2k views

MD + LUKS + LVM will not cleanly shutdown

My setup is currently raid1 + luks on each md partition and lvm on top to stripe between the arrays. There is only one volume group with one logical volume currently. sdc ...
5
votes
3answers
5k views

How to encrypt files using a cross-platform solution?

What programs can be used to encrypt files that could subsequently be decrypted on any OS? For instance, it should then be possible to easily decrypt the encrypted files under Linux, Windows, OS X, ...
5
votes
3answers
1k views

Passwords in the Password/Encryption Keys program

I noticed that I have passwords in the Password/Encryption Keys program . It appears that anybody who walked up to my computer could go look at all my passwords without needing a master password. Did ...
5
votes
2answers
44 views

Where do I store my private keys?

I have one GPG Personal key, two SSH RSA keys, and one Machine Owner Key. What would be the best way to keep them safe if I don't want to take them off my hard drive?
5
votes
1answer
257 views

Can we make a folder and its contents remain locked for certain times of the day and unlocked for the rest of the time?

Suppose I have a Games folder. I don't want to waste my time on games. So is there someway that the folder remains inaccessible for most of the day, and only becomes accessible for say 3 hours after ...
5
votes
2answers
331 views

Is full-disk encryption making my system unstable?

About six months ago I installed Ubuntu 14.04 on my laptop with full disk encryption (FDE). Now I am considering turning off FDE because I think the feature is making my system unstable. The risk of ...
5
votes
2answers
5k views

Decrypt TrueCrypt containers using dm-crypt

Is it possible to decrypt TrueCrypt containers using dm-crypt? I have some container files created with TrueCrypt and I just wanted to know if it's possible to decrypt them using dm-crypt so I can ...
5
votes
4answers
7k views

Swap partition not recognized (The disk drive with UUID=… is not ready yet or not present)

I think I had an encrypted swap partition, because I chose to encrypt my home directory during the installation. I believe that's what the line with /dev/mapper/cryptswap1 ... in my /etc/fstab is all ...
5
votes
1answer
495 views

Is my swap encrypted or not?

I chose to encrypt the home folder while installing Lubuntu 12.10 (64-bit), but after that, sometimes I get error that the system "cannot find /dev/mapper/cryptswap1 wait for mount or cancel at splash ...
5
votes
1answer
1k views

why is it a risk to clone a LUKS container?

I recently installed Ubuntu onto an encrypted partition using the LUKS+LVM combination that the 'alternate' installer offers. Now I want to create backups of my HD. From the LUKS FAQ: 6.15 Can I ...
5
votes
2answers
2k views

Can ecryptfs-setup-private be made to use a 256 bit AES key (instead of the default 128 bit key length)?

ecryptfs-setup-private will by default use an AES 128 bit key. Can I make it use a 256 bit key (32 bytes key length)? Of course, I could do the whole process manually as described here: https://wiki....
5
votes
2answers
1k views

How to backup a system with whole disk-encryption?

What's the way to backup a system encrypted with whole disk-encryption? I mean, The total system is encrypted, not only the home folder.
5
votes
1answer
124 views

How can I increase Ubuntu's 143-byte file name limit for encrypted directories?

In encrypted directories, Ubuntu (at least 15.10) seems to have a file name byte limit of 143 B--much smaller than the ext4 file system's limit of 255 B. Where is this special limit set, why is it set ...
5
votes
3answers
4k views

How do I create an encrypted growable disk image?

I don't want to encrypt my whole home directory, just my work folder. So I figured that having my work stuff in an encrypted ISO would be a good idea. How do I create an ISO? How do I encrypt that ...
5
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1answer
2k views

Is there a way to decrypt EPM files using Ubuntu?

The government agency I work with sends me files encrypted with epm. I have the passwords. Is there a way to decrypt these files using Linux?
5
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1answer
1k views

Clone encrypted HDD to smaller drive

For my work Laptop I use full HDD encryption and I need to upgrade my 500GB HDD to a 250 SSD drive, my HDD has only around 100GB of data and is created via encrypted LVM. GParted does not support ...
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 ...