Ubuntu Security :: Right Click - Automatically Get The Encrypt Process To Delete The Un-encrypted File When It Makes The New Encrypted Copy?

Jan 5, 2010

I've just started using ubuntu one. However, some of the files I store on there are sensitive so I encrypt them using seahorse. Right click, encrypt etc etc. My question is, is there a way to automatically get the encrypt process to delete the un-encrypted file when it makes the new encrypted copy?

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Security :: Bash And Python Scripts - Encrypt Them But Still Be Able To Execute Them Encrypted?

Aug 24, 2010

I have some bash and python scripts. Is there any way to encrypt them but still be able to execute them encrypted?

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Ubuntu Security :: Main Encrypted LVM Not Accessible After Deleting A Different Encrypted LVM On USB HD

Mar 7, 2011

I installed Ubuntu 10.10 64 on my laptop with the entire 500gb setup as encrypted LVM. This has worked well for several months with no problems. During this time i have been backing up the data to an external usb drive (1tb) on a regular basis. The usb drive was not encrypted. So, I thought it would be a good idea to encrypt the backup drive too. I wiped out the backup drive and set it up as one large encrypted lvm and mbr. This seemed to work fine but immediately afterwards I decided to erase that and set it up as encrypted lvm guid instead of mbr. I couldn't delete it while logged into my desktop so i decided to do it from a bootable gparted usb stick. In gparted i erased the 1TB backup drive once again and planned on setting it up the way I wanted once I was logged back into my ubuntu desktop. Now I cant boot into my desktop with the following errors:

cryptsetup: evms_activate is not available b0d) does not begin with /dev/mapper/

Then after waiting for a few minutes I get an error followed by (initramfs)

When booting from a live version of ubuntu the 250MB boot patition is recognized and 500 partion is there but it is labeled as empty/unused.

Also, I did choose to use the exact same passphrase as what is used on the main bootable drive when I set up the encrypted partition on the external 1TB drive.

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Ubuntu Security :: Send A PGP Encrypted File - Support?

Jan 1, 2010

I want to send a PGP encrypted file to a friend who (unfortunately) probably doesn't even have any idea what PGP is. He runs Windows XP. I know I can encrypt and decrypt PGP files easily and freely on Ubuntu, but I have no idea about how to handle PGP in XP... I tried downloading a PGP file in an XP virtual machine to find out, and Windows was pretty much unable to identify the file type. What kind of software on Windows (that is completely free and trustworthy) would be able to decrypt my PGP files?

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Debian :: Automatically Delete USB Flash And Copy New File

Aug 26, 2010

How can I automate the following: When I insert a flash drive into any of the available USB ports, some kind of script or software, must automatically mount it, delete everything off the flash drive, copy an audio file back to it and then automatically unmount the USB.Maybe I should setup some kind of Kiosk to use the above functionality - would that be easy?

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Ubuntu :: Automatically Mounting Encrypted Partitions ?

Nov 24, 2010

I've created some encrypted partitions using Disk Utility, and would like them to be automatically mounted when Ubuntu starts up. Is there a guide to this anywhere?

I've gathered that it involves /etc/crypttab and possibly /etc/init.d/cryptdisks, but haven't had much success so far.

Ideally, some of the partitions would mount early in the boot process, while some of them can mount after I've logged in.

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Ubuntu Multimedia :: Copy Of Encrypted DVD Won't Play?

Apr 19, 2010

I attempted to make a copy of Saw V and Saw VI using K3B. In both cases, the copy did not play on a stand-alone DVD player. The menus worked, but the movie would not play. In Kaffeine, I got an error stating that the NAV could not be found. The original DVD plays in Kaffeine, so I know that libdvdcss is is installed. What needs to be done in order to successfully copy a newer DVD? Is there a deeper level of encryption beyond CSS?

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Ubuntu Security :: Encrypt With Right Click Safe?

Jul 13, 2011

I just found a neat way to encrypt a file in Ubuntu 10.04.

I right click on a file and select the Encrypt option. The program prompts me to "Choose Recipient" so I choose myself on the list. Then it prompts me to enter my passphrase.

Once all that's done I hit enter and it adds .pgp to the end of whatever file just encrypted. The same basic method is used to Sign the file.

Does it sound as though what I said is correct and that the file I wanted to encrypt was indeed encrypted?

Can anyone crack my files without the passphrase? I'm sure it depends on the complexity and length of the passphrase.

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Security :: Locating Process Which Delete Some Specific File

Jun 27, 2010

On my RHEL5 system one of my key file in one specific directory gets deleted when I start my application suite (having multiple processes). Is there some way to narrow down which specific process is deleting this file?

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Fedora :: Migrating Encrypted LVM And Decrypting It In The Process?

Aug 3, 2009

I recently bought a bigger drive for my laptop which had an encrypted LVM PV on it that I wanted to get rid of for performance reasons. I hit a few snags with the migration and documented it on my blog.

Fancy reading it? Go to my blog post about upgrading harddrive with encrypted LVM.

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Ubuntu :: Automatically Unmount Encrypted USB Flash Drive When Device Is Unplugged?

Apr 21, 2010

I formatted the USB flash drive using Karmic's Format Disk utility (right-click on a volume, select "Format..."), and selected "Encrypted, compatible with Linux (FAT)" from the "Type" drop-down menu.It mounts correctly when I plug it in, and I can access the files just fine.When I unplug the Flash drive without using the 'Safely Remove Drive' option, the icon on my desktop changes its name to '2.0 GB Encrypted', instead of disappearing and unmounting like my unencrypted Flash drives do.

I would like to have encrypted Flash drive treated in the same way as my unencrypted Flash drives, which disappear and unmount when unplugged, even if the 'Remove Safely' menu option isn't used. What can I do to accomplish this?NOTES:When I plug the encrypted Flash drive in, the following line shows up in the output of 'mount'. 'secure' is the name I gave the disk during the format process:

/dev/mapper/devkit-disks-luks-uuid-302db16c-c6e2-4dd9-a259-436437c76475-uid1005 on /media/secure type vfat


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Ubuntu :: Pam_mount Mounted Encrypted Partition Gets Automatically Unmounted Over Time?

May 15, 2011

/etc/crypttab :
storage /dev/sdb none luks, retry=1
/etc/security/pam_mount.conf.xml :
<volume path="/dev/sdb" mountpoint="/storage" cipher="aes-cbc-essiv:sha256" />


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General :: Send Gpg Encrypted Mail Automatically From The Command Line?

Sep 14, 2010

How can I send gpg encrypted mail automatically from the linux command line?

I'm a little stumped on this one, I've tried using mutt but it doesn't encrypt mail unless it's used interactively.

Does anyone know if you can use the build in mail command to do this some how?

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Software :: Configure Pam_mount To Automatically Mount An Encrypted Partition ?

Apr 3, 2010

I'm trying to configure pam_mount to automatically mount an encrypted partition (luks) and formatted to NTFS. I typed the command in the configuration file:


<volume user="user" fstype="crypt" path="/dev/sda6" mountpoint="~/dane2" options="defaults,umask=000" />

But the partition is mounted read-only. There is some way to mount the partition rw mode?

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Fedora Security :: Encrypt Files Via Right Click Menu?

Sep 3, 2010

Is there any yum package out there that would enable me to encrypt single files/folders via the right click menu (the one with Open, broswer etc etc)

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Security :: Setup Vi To Automatically Encrypt/decrypt .pgp And .asc Files

Dec 17, 2010

I'm trying to setup vi to automatically encrypt/decrypt .pgp and .asc files. The encryption part works. If I "vi testfile.gpg" it will auto encrypt it on save.

However when I try and vi the encrypted file it does not prompt me for my pass phrase. I just get this:


Here's what I have in my ~/.vimrc file.


This is on gentoo linux if it makes any difference.

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Ubuntu Security :: Encrypted Backup With Duplicity?

Feb 20, 2010

I managed to make an encrypted backup of my ubuntu box onto my server and was also able to restore it. I mainly followed this tutorial here. Altough everything worked fine I have two questions:What is that part for ? Quote: export PASSPHRASE=your_passphrase

Just for the fun of it, and to see how it would handle incremental backups I ran the backup command a second time and was, to my surprise, asked to provide my GpG password. Whys that? And how can I "auto-login", since I would like to run this command in a cron job.

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Ubuntu Security :: Encrypted Home On Karmic

Mar 15, 2010

During the installation of Ubuntu Karmic, I picked the option that encrypts my home directory.

A few questions:

(1) Shortly after installation, I was asked to run a command to print a key necessary for data recovery from a rescue CD. I didn't run it at the time and am now looking for the command to run. What is it?

(2) I think I read somewhere that this also encrypts swap. Great. Correct me if that's wrong.

(3) If I suspend the machine, is my home directory encrypted? That is, if I have this on a laptop and travel with the suspended laptop and someone steals it, are my data safe, or not?

(4) I assume the weakest point in the system is my relatively short login password (but I think the install tests it and found it okay). Is there a recommendation how long this should be?

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Ubuntu Security :: Encrypted Swap Misconfiguration - Again

Feb 21, 2011

i started on the "Installation & Upgrades" Forum. So this is basically a repost. I configured an encrypted swap during the installation process of my kubuntu maverick using the manual install CD. I do not use LVM. This worked fine but I made the mistake of assigning a password to the encrypted swap. I would like to change this in favor for a random key. I tried to change /etc/crypttab in the following way:


Now the system still asks for a password for sda7_crypt at startup, but does not recognize the old password. It seems that the swap gets a random key and works fine anyway, so I really want to remove only the question for the PW at boot time. This is not a big issue, but it is annoying. When the system is up I can do swapoff and swapon without problems and no password is needed. Directly after boot swap works:


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Security :: Booting From Encrypted OS Installed In USB

Jan 25, 2011

I want to install Ubuntu 10.04 in my USB flash drive and boot from it because in my working place, only centos is installed in workstations.In advance, I thought of encrypting the installation of Ubuntu in the USB flash drive and In would be very thankfull if some can give me some help regarding this.Basically what I need is, encrypted Ubuntu installation in my usb fashdrive and can boot from it.

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Ubuntu Security :: Aes-xts - Aes-lrw - Aes-cbc - Set Up Encrypted Volumes With Dm_crypt And LUKS?

Jan 3, 2010

I'm just wondering - what is the best way to set up your encrypted volumes with dm_crypt and LUKS?

My understanding was that aes-lrw ws better than aes-cbc - and then I stumble upon [url] which says that LRW has some problems, and XTS is better? I dont know enough about encryption theory to be able to say anything, so i'm hoping some folks more enlightened will be able to say something here.

I was previously using aes-lrw-benbi to set up a volume. If xts is truly better - should i be using '-c aes-xts-benbi' then?

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Ubuntu Security :: SSH Server - Username / Password Encrypted

Jan 31, 2010

There was a recent thread in this forum regarding capturing of SSH passwords via the use of wireshark. The thread subject was closed, which is a decision that I both agree with as well as agree with the reasoning behind. The thread, however, raised a point of curiosity and concern that I would like to ask about. Quoting from a the book, SSH, The definitive guide,

The client authenticates you to the remote computer's SSH server using an encrypted connection, meaning that your username and password are encrypted before they leave the local machine. The SSH server then logs you in, and your entire login session is encrypted as it travels between client and server. Because the encryption is transparent, you won't notice any differences between telnet and the telnet-like SSH client.

I was under the impression that SSH was impervious to this type of eavesdropping, and quite frankly I take great comfort in that idea. I personally, only allow RSA keys for SSH access and (hopefully) avoid this problem (?) as a result. Does SSH really have a vulnerability in that the authentication is sent via plain text? How to ensure the security of SSH and not on anything that could be considered a how to 'crack' it.

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Ubuntu Security :: Decrypting Document Encrypted On Smartphone?

Feb 26, 2010

I'm an absolute beginner at encryption. gpg and keys still have me somewhat mystified, so please forgive me if the following seems like a stupid question. I'm looking at encryption software for my smartphone. I've found a Java program called TinyEncryptor that uses the TwoFish algorithm and claims to be a shell for the "Legion of the Bouncy Castle" libraries. It just uses a passphrase; there are no keys involved as far as I am aware.

Naturally, I would like to be able to decrypt files on my desktop that I've encrypted with this program. So far, I've not had any success with finding one.

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Ubuntu Security :: Encrypted Home Folder And DropBox

Mar 9, 2010

I just installed 9.10 on my laptop and selected the option for home folder encryption. I am running DropBox and placed the DropBox folder on my desktop (meaning it should be encrypted when I am logged out.) So I have two questions:
1) Shouldn't this setup cause my DropBox files on the server to be encrypted? Apparently they are not because they appear as unencrypted text using the DropBox Web interface.
2) If they were encrypted on the server (which doesn't appear to be the case right now), how would it be possible to share them with another client unless the encryption on both clients were set up identically?

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Ubuntu Security :: How To Recover Encrypted Home Partition

Apr 26, 2010

While setting up my laptop on a new hard drive (a bad mobo caused writes which pretty much rendered teh old hdd unusable) I was asked if I wanted to encrypt my home partition.

I've been wanting this for several years - even going as far as trying to get a copy of CheckPoint. That's waht my organization uses on all Wintendo laptops and is required.

In any case, I said "yes" and am happily using my laptop with an encrypted home partition. I'm assuming based on this - [URL] - that it is using EncryptFS as the scheme.

if I were to misplace my laptop, how easy would it be for a forensics team to retrieve my data. Let's assume I have a fairly strong passphrase, such as BisZumBitterenEnd3. [URL]

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Ubuntu Security :: Recover Encrypted Home Partition?

May 3, 2010

I had some major problems after the recent Ubuntu upgrade and had to boot from a live cd. I have a separate /home partition, but it was encrypted using the default install encryption in the 9.10 install cd. How can I get to my files so I can back them up?

I have tried this but it did not work: http://ubuntuforums.org/showthread.php?t=1337693

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Ubuntu Security :: Loop Hole In Encrypted Home?

Jun 11, 2010

I'm using 10.04 with encrypted home dir. I think the behavior below is wrong:

I can log in as root and change user's password. After that the user can log in using new password, which is normal, but it can also decrypt its home dir using the new password, which is dangerous. Assume I lost my computer. This encrypted home dir will not protect my private data because whoever gets the computer can boot it up with a livecd and chroot to change my user's password and then boot up my system and log in using new password.

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Ubuntu Security :: Recovering Encrypted Home Folder?

Jul 19, 2010

Let's begin from the top. I have a relatively new laptop that I've been running Ubuntu on (along with a little-used Windows boot). Picked it up in November or so, installed the current "latest" version of Ubuntu at the time (9.10). I have been doing incremental upgrades, and it's been progressively breaking down more and more. Yes, this includes 10.04.

After GRUB stopped working, I decided it was time to try a reinstall from the top. I told it to leave all the other operating systems alone and do a full reinstall.

Fortunately, I had managed to stuff most of my current work in duplicate locations during this whole debacle, somehow. Don't ask me how I managed to do that when GRUB wasn't working. However, when I installed, I conscientiously said "Oh, yes, Ubuntu, encrypt my home folder! I love privacy!" As a result, about... 30 gigabytes of useful (but ultimately re-downloadable) material is rather inaccessible at the moment. When I try to boot the old system using the newly fixed GRUB, it goes into kernel panic. This seems like a no-go.

I have a saved hojillion-character long passphrase for decryption from my install back in November. Conscientiously saved in the case of just such an emergency.

I read this how-to and followed it to the letter as far as I could tell, trying to mount with ecrytfs to recover my data.

[USERNAME] here is a proxy for my actual username. Yes, the location of my old home folder may seem a little bizarre.

sudo mount -t ecryptfs /media/c82ca9fe-2b15-4aca-a98d-6482b1d80a32/home/[USERNAME]/ /home/[USERNAME]/oldhome
Select cipher:
1) aes: blocksize = 16; min keysize = 16; max keysize = 32 (not loaded)


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Ubuntu Security :: Different PWD For Login And Mounting Encrypted /home

Nov 13, 2010

I've just reinstalled my box with an encrypted home (used the encrypt home option when installing). I have a query in this regard - suppose I lose the box. Won't it be possible for someone to drop into root, reset my passwd and then access my /home. Is there anyway of having a different passwd for accessing /home? My ~ is on a different partition from /.

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Ubuntu Security :: 10.10 And Win7 - Encrypted Partition And Dual OS

Apr 8, 2011

I have to operating systems installed, Ubuntu 10.10 and Windows 7, working perfectly. I also have a partition, currently empty, to be shared between both OS, but I would like that partition to be encrypted.

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