encoding information in a way so that it can only be decoded if a secret is known; used to prevent exposure of data to other parties

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15 views

Encrypt existing disk with LUKS?

I have get informed on how prepare a LUKS system & partitions, giving a key/passphrase, etc. But for a new fresh install of linux. How to encrypt an already installed/configured linux system ? ...
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1answer
22 views

How to deallocate extents of physical volume? lvm, encrypted

I just install Debian 8.1. I allocated almost all disk 300 GiB to encrypted partition and a little bit for boot. I want to make smaller 50GiB encrypted physical volume and install different xen OS to ...
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1answer
28 views

How do I test or verify ZFS encryption is working?

How do I test or verify that the ZFS encryption is working, especially when running as a Samba share? Like if I create a ZFS pool with encryption=on, how can I tell whether a file is being properly ...
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35 views

How can i access encrypted Ubuntu /home folder in Arch Linux?

I just moved to Arch from Ubuntu and i want to have access to the Ubuntu /home folder and it's encryped. There are only two files inside /home/dscript folder. How can i access the /home folder?
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29 views

Auto-mount encrypted USB issues on boot for Raspberry Pi

My previous post about what I am trying to achieve: link Essentially trying to automount and encrypted USB drive at boot. Been slowly chipping away at this and feel I get a good idea of the process ...
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1answer
34 views

luks volume disappears after reboot

I created a separate partition on a CentOS install (VirtualBox), and am attempting to encrypt it using cryptsetup and LUKS. I'm using the following commands to get this set up: cryptsetup luksOpen ...
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1answer
90 views

auto mount encrypted USB

I've actually just started dabbling in the raspeberry pi but no stranger to hacking around these controllers. Having said that, my knowledge is lacking in a few areas. A little about what I want to ...
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0answers
17 views

Strategy about cloning crypted (LUKS) systems

For a while, I ve being discussing here how to manage to clone one encrypted system on others. My plan is to build a Mint system, then to encrypt it, then to clone it. Here is my process for ...
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1answer
47 views

How to decrypt and copy home folder from laptop to external hard drive through live usb GUI?

I am a fairly new user to Linux and have been using Elementary OS for the last 2 weeks. Everything was working alright until just two days ago when I decided to set the default brightness level ...
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1answer
32 views

LUKS encryption full disk, how many RAM?

If I encrypt (dm crypt, LUKS) my whole system, how many RAM should I provide ? I've understood that LUKS volume is mounted RAM, ... If my system is 10 Gb, should I have something like RAM 12 Go ?
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13 views

Linux PGP : load key from pendrive at Boot

A Linux Mint machine owns some** encrypted files (pgp). The machine cannot run if not electrically plugged (a physical theft shuts it down immeditately). **I d like to avoid storing decryption key on ...
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0answers
26 views

Linux counter-theft encryption : PGP or DM-Crypt?

I am brainstorming about the best strategy for my project. I have a machine (Linux Mint) with sensitive files on it. This machine is a prototype and I'll clone the disk on some others. Each machine ...
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2answers
40 views

Linux LUKS encrypt and cloning machines

I'm working a prototype based on Mint. Mint installed + installed and configured packages. This proprotype is built on a rasp-like computer. I plan : to clone disk on several other rasp-like ...
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1answer
22 views

install already built Linux environment

I have configured aMint-based environment : openVpn, hostapd, and a bunch of other configured package. This is done on a rasp-like computer (OEM). I planned to clone my disk on other machines. I dont ...
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0answers
22 views

Encrypt some folder and hide key in Linux

I work on a Debian system (Mint actually). I'd like to encrypt some folders and files, for instance: the one with OpenVPN configuration and keys, and be able to decrypt it on the fly. My problem: ...
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41 views

Encryption Linux system after installation

Is it possible to encrypt a Linux system (Mint, Debian based) after installation? For an "on the fly" usage. My system is both : a client (www, ethernet), a local server (wifi). I am working on a ...
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1answer
44 views

Encrypt Debian-based system

I have a kind-of-raspberries park, all connected via VPN to a single one server. I'd like to encrypt each rasp', in order to avoid intrusions, if one is stolen/thieft. Each rasp' has already a system ...
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1answer
98 views

OS X FileVault 2 duress password

I've been attempting to add a custom script to run after the FileVault password is entered on login that will check whether it a 'special password' that will run a script in the background after ...
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2answers
66 views

Encrypting directories with gpg

I want to use GPG for local encryption only, and after reading the man file, I'm doing the following in order to encrypt a whole directory: I zip the directory with a password "zip -r -e foo foo", ...
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1answer
44 views

OpenVPN client config :: why is needed ca.crt?

I configured a VPN (OpenVPN, mode: multiclients-1server), CentOS Server, multiple Rasp's clients. CA.crt is needed by each client, in addition of the client.crt & client.key . I wonder... why ? ...
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2answers
37 views

OpenVPN : protect your clients key/cert/conf from being stolen?

I have configured an OpenVPN install. Mode: multiclients 1server. Clients are raspberries. I note how easy it is to steal a rasp, and look in HDD to get key+cert+conf. Copy it on your laptop, and ...
0
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1answer
99 views

CentOS 7 - while installing i set disk encrypted with password, but on reboot always it asking password

While installing CentOS 7, i put password for disk encrypt. Now while working remotely on that machine and doing reboot it always ask password to be inserted on-site. Is this normal? or there is a ...
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1answer
125 views

“no matching cipher found” error in `rsync`

I am trying to copy a directory from one system to another with rsync; but it erred. Can you please advise me on what to check? Command: [M root@aMachine ~]# rsync -e "ssh -c blowfish" -v -a ...
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1answer
98 views

cryptsetup: dm-crypt plain mode using keyfile AND passphrase

I feel a keyfile and a passphrase provide different benefits. They can not be obtained in the same way (one you need to physically acquire, the other one you need to know). Thus, I think there is ...
2
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1answer
33 views

Backup on a remote server in an encrypted folder

Is there an easy way to backup your home directory on an online server in an encrypted folder? I heard of obnam which should be able to store encrypted with a GPG key somehow. What would be the ...
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2answers
89 views

Automatically shred LUKS partition upon X failed decryption attempts?

Is it possible to set up a bootloader that automatically begins shredding the header.img file and then the encrypted partition itself upon X failed attempts at decrypting the partition? If this does ...
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1answer
53 views

Encrypt PHP script to a domain (RSA)

I have a php script I want to share with someone but only limit them to be able to use it on one domain. I have found http://phpseclib.sourceforge.net/ - I think I can do this with RSA encryption but ...
2
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1answer
353 views

Debian error message: “Unable to find LVM volume”, but then boots successfully

I was trying to encrypt all the HDD during the installation process of Debian 8 Jessie using full disk encryption + LVM, and I did it, but, there are a little "problem". Before the system asks me the ...
5
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1answer
37 views

Is there an unencrypted but signed filesystems?

I'm curious if there is a filesystem that's unencrypted, making it readable by anyone, but employs a digital signature scheme so as to require that writes be digitally signed. I suspect the answer ...
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0answers
138 views

Mounting SMB3 share with encryption fails: mount error(13): Permission denied (Synology)

Everything works fine until I add encryption on my synology, from that point on I only get mount error(13): Permission denied I've tried this command: mount -t cifs //192.168.178.22/Filme ...
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1answer
115 views

passwd does not work after change CRYPT_DEFAULT

I want to change algorithm for password encryption in Solaris 10 server. When I change CRYPT_DEFAULT option from __unix __ to 6, I can not change my old password with passwd command and I get ...
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49 views

How do I encrypt (password protect) a PDF without encrypting the metadata?

It seems that the encryption provided by pdftk(1) is the level supported by Acrobat 5 (I added a password to a PDF file using pdftk then opened it in Acrobat Pro 9 and examined the security settings; ...
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2answers
44 views

Does secure delete files on an encrypted partition make sense?

I have an encrypted partition that I mount with cryptsetup at every boot. Does secure delete (e.g. with srm) a file into this partition make sense? I know that from an external point of view an ...
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1answer
121 views

crypto kernel module not available on Raspberry pi 2 (linux 3.18.11)

I'm trying to use dm-crypt on my Raspberry Pi 2 with Raspbian (debian) to open a trueCrypt volume, but i get Required kernel crypto interface not available. Ensure you have algif_skcipher kernel ...
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2answers
70 views

Is there a way to edit a password-protected file without having to retype the password all the time?

I want to encrypt a text file using a password and a way to safely edit that file. The problem I am having is that I haven't managed to find a simple way to do that while only requiring the password ...
3
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0answers
89 views

How to use AES hardware encryption of LTO tape drives on Linux?

How to use AES hardware encryption of LTO tape drives on Linux? I expect the LTO AES encryption to be faster than software solutions. A quick benchmark of aespipe on i7 CPU gives an impression on the ...
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0answers
52 views

What could be the output of command `lsblk -f -r | grep ' /' | grep -v ' /boot'` on encrypted drives?

Suppose we have drives which are encrypted, what could be the output of following command in Debian based (specially Ubuntu OS)? lsblk -f -r | grep ' /' | grep -v ' /boot'
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2answers
124 views

Debian Wheezy, ejabberd and forward secrecy

After validating of my public XMPP service on xmpp.net, I've got the error: Warning: Server offers no forward-secret ciphers. Grade capped to A-. Is there an easy way to enable these ciphers? As ...
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0answers
60 views

Gnome encfs Manager not working in linux mint 17

I have installed Gnome encfs Manager in linux mint.It opens fine after first installation.But after that when I want to open it,nothing happens.But in system monitor I can see it running.When I run it ...
2
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1answer
95 views

Cloning a root partition onto a dm-crypt encrypted one

I have Gentoo Linux installed on a 25.93GB/62.43GB partition /dev/sda4. The other partitions on the disk are 150MB /boot on /dev/sda1 and 56,66GB unused space on other two partitions. I am planning ...
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0answers
107 views

Mount encrypted ChromeOS partition in Chrubuntu

I have a Samsung Chromebook 2, and was using crouton to run linux in a chroot next to chomeos and ran out of SDD space. I opened gparted, and it told me that the GPT table was in the wrong place and ...
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5answers
97 views

Prevent encrypted partition from running on other PC

Concise question: Is it possible to somehow bind partition encryption to hardware so it is impossible(very hard) to copy system to another PC and run there? Full story: We have a small embedded PC ...
2
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2answers
98 views

How can I store an encrypted rdesktop password for easier sign-in?

I am using rdesktop on a Fedora laptop to connect to Windows computers at work. To make it easier, I've made an alias in my .bashrc: alias companyremote='rdesktop -u USER -p - -g 1920x1040 -K' So I ...
2
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1answer
63 views

Are encrypted volumes more vulnerable to power loss?

I have some encrypted volumes that I use with my Xubuntu machine. One volume is a container file that is mapped to /dev/loop0 and encrypted using plain dm-crypt; another volume is a USB hard drive ...
2
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2answers
58 views

Encrypted FileSystem in VirtualBox

I'm looking for any information regarding how secure an encrypted Linux file system is when contained in a VirtualBox virtual drive on a Windows host? Specifically I'm looking for answers to the ...
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1answer
189 views

FreeBSD 10: Disable ZFS full disk encryption

I installed FreeBSD 10.1 and chose to encrypt the ZFS root volume and Swap during install. I'm now realizing that on the remote KVM vserver I'm on the encryption makes rebooting harder and probably ...
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2answers
66 views

FreeBSD 10 and ZFS: Methods for encrypting files

I'm in the process of setting up a FreeBSD 10 server on a KVM vserver. I'm really new to FreeBSD in general (coming from Debian Linux). I installed the system choosing ZFS with encrypted root volume ...
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0answers
63 views

How do I decrypt this hard drive?

In 2011 I installed Ubuntu server edition on an old Dell that I had laying around. During the install process I was using the gui installer and opted to set disk encryption on the disk drive. During ...
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2answers
382 views

How to set password for pdf files?

I need to password protect my PDF file(s), because I am going to send them through email and I want anyone who would view my PDF file(s) to be prompted for a password. How can I add a password to a ...
4
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2answers
121 views

Encrypt a single file and read/edit on-the-fly

I have a single text file I want to encrypt. I can easily do so with any common software. But then, I want to be able to click on it, provide a password, and be able to read, edit, and close it. All ...