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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2answers
131 views

How strong is the encryption of a zip file in Linux Mint

Zip encryption has had often a bad reputation of being weak, but some would argue that a zip file encrypted using certain algorithms (such as by using AES), together with strong password, is really ...
3
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1answer
97 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 ...
1
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1answer
63 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

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 ...
1
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1answer
24 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 ...
0
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0answers
12 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 ...
1
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1answer
36 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 ...
0
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1answer
28 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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0answers
8 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 ...
0
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0answers
20 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 ...
0
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0answers
9 views

Linux LUSK encrypt and cloning machines

I'm working a prototype based on Mint. Mint installed + installed and configured packages (openVpn, hostApd, etc). This proprotype is built on a rasp-like computer. I plan : 1. to clone disk on ...
1
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1answer
21 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 ...
14
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3answers
7k views

How should one set up full-disk encryption on OpenBSD?

Is there a preferred method to set up full-disk encryption under OpenBSD, similar to dm-crypt under Linux? I'm looking for full-disk encryption, as if someone were to steal my notebook they could ...
1
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1answer
40 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 ...
0
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0answers
19 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: ...
0
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0answers
35 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 ...
1
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2answers
58 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", ...
3
votes
2answers
374 views

ecryptfs mounted via command line, what do I need to backup?

I asked this question on the ecryptfs launchpad, but it expired there without answer. https://answers.launchpad.net/ubuntu/+source/ecryptfs-utils/+question/235226 It might be trivial, but I really ...
0
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1answer
32 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 ? ...
3
votes
1answer
639 views

Grub2 keyboard layout when decrypting partition

According to the OpenSUSE 12.3 documentation the only keyboard layout which can be used during a Grub2 boot is the "US keyboard layout". Is there really no way to change the keyboard layout used when ...
1
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2answers
30 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
81 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 ...
0
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1answer
62 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 ...
3
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1answer
59 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
31 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 ...
0
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2answers
90 views

Execute scripts without decrypting them

I have a set of scripts (bash, ruby, python) and want to put everything into a container like file so I can deploy this container on a lot of servers. This scripts need to protect from accessing other ...
3
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2answers
62 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 ...
2
votes
1answer
213 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 ...
1
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2answers
458 views

cannot change my login screen background

I cannot change my login screen background to the desktop background in my elementary os which is based on ubuntu. I have decrypted my home folder according to this link: ...
14
votes
3answers
10k views

Encrypting file only with SSH -priv-key?

Suppose I want to encrypt a file so that only I can read it, by knowing my SSH private key password. I am sharing a repo where I want to encrypt or obfuscate sensitive information. By that, I mean ...
1
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2answers
81 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 ...
-1
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1answer
45 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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2answers
110 views

Does the debian setup with lvm also encrypt the swap partition?

I'm planning a fresh debian install on my notebook and want to have full disk encryption. But I mainly hibernate, which is why I want my swap to be encrypted as well. During the graphical expert ...
0
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0answers
110 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 ...
5
votes
1answer
34 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 ...
1
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1answer
106 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 ...
1
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0answers
41 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; ...
2
votes
2answers
76 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 ...
3
votes
2answers
36 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 ...
9
votes
2answers
2k views

How do I set up an encrypted swap file in Linux?

How do I set up an encrypted swap file (not partition) in Linux? Is it even possible? All the guides I've found talk about encrypted swap partitions, but I don't have a swap partition, and I'd ...
0
votes
1answer
101 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 ...
1
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2answers
56 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
votes
0answers
66 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 ...
0
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0answers
41 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'
0
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0answers
42 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 ...
10
votes
3answers
28k views

How to encrypt messages/text with RSA? (using openssl?)

I have Alice's public key. I want to send Alice an RSA encrypted message. How can I do it using the openssl command? The message is: Hi Alice! Please bring malacpörkölt for dinner!
2
votes
1answer
78 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 ...
4
votes
5answers
4k views

Fast Way to Randomize HD?

I've read about how to make hard drives secure for encryption, and one of the steps is to write random bits to the drive, in order to make the encrypted data indistinguishable from the rest of the ...
0
votes
2answers
56 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 ...
1
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5answers
96 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 ...