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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2
votes
1answer
438 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 ...
4
votes
1answer
133 views

How to decrypt hostnames of a crypted .ssh/known_hosts with a list of the hostnames?

I try to find a script to decrypt (unhash) the ssh hostnames in the known_hosts file by passing a list of the hostnamses. So, to do exactly the reverse of: ssh-keygen -H -f known_hosts Or also, to ...
0
votes
3answers
44 views

Setting Up VPN Practice/Service Without Access to Private Internet

I use Lubuntu 14.04. I've gotten concerned about encrypting my internet traffic after reading about the problems with public WiFi and intend to start using VPN. However, all my internet usage is on ...
0
votes
0answers
13 views

Install Lubuntu as 2nd OS on encrypted computer?

I have debian installed on my computer which is installed in a full encrypted disk. Having tried lubuntu in virtual box form and liking it, I want to try lubuntu out on the actual computer instead of ...
21
votes
5answers
29k views

How to create SHA512 password hashes on command line

In Linux I can create a SHA1 password hash using sha1pass mypassword. Is there a similar command line tool which lets me create sha512 hashes? Same question for Bcrypt and PBKDF2.
1
vote
2answers
44 views

How does openssl decrypt a password

I'm learning about encryption and decryption on linux and php. So I have three questions about openssl and how it generates password hashes. 1- So say I generated a password with the linux command ...
0
votes
1answer
38 views

Is my home folder encrypted?

Is there a way to check if my home folder is encrypted? I believe I checked this option during the installation, but now I'm not sure.
1
vote
0answers
6 views

How to avoid session login failure with ecryptfs

After encrypting my /home directory with the migrate-home ecryptfs-utils script I can't log in to an XFCE session on my Manjaro system from the normal login screen. If I try to, the session is ...
3
votes
4answers
2k 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 ...
-2
votes
0answers
20 views

To decrypt encrypted a folder

I encrypted a folder using encfs ~/.encrypted ~/visible. After upgrading Ubuntu OS, I cannot access my files anymore. Is there a way to decrypt encrypted folder if I still have the password, the ...
8
votes
1answer
83 views

Does QEMU/KVM use Intel AES instructions for encrypted qcow2 images if the host CPU has them?

The qcow2 image file format for KVM can use AES encryption. The encryption is applied at the cluster level: Each sector within each cluster is independently encrypted using AES Cipher Block ...
0
votes
1answer
104 views

Cant create encrypted partitions during Debian installation

I am using debian 7.4 cd. When I set a partition as '/' during manual partition.It is fine. However when I then try to use it as 'physical volume for encryption'...everything works fine it erases and ...
0
votes
0answers
135 views

How to make grub mount encrypted LVM partition

I have such boot sequence: system boots from external disk, right after start it asks about password for LVM encrypted partition (which holds /root and /home), I enter it, the partitions are mounted, ...
2
votes
0answers
88 views

lsof: home folder is busy, but I never logged in as that user

I'm trying to run ecryptfs-migrate-home to encrypt my home folder, but the command keeps failing the open files check. Indeed, lsof +D "/home/will" shows the same in-use files as ...
2
votes
1answer
40 views

Formatting LUKS encrypted disk

How do I format LUKS encrypted disk if I don't know the passphrase? I recently switched my HDD for a new SSD disk in my laptop and now when I connect the old HDD externally I can't mount disk event ...
2
votes
1answer
3k views

net.ipv4.conf.all.mc_forwarding: why is my access denied?

On Debian 12.04 LTS I am trying to access the key net.ipv4.conf.all.mc_forwarding by doing : sudo sysctl -w net.ipv4.conf.all.mc_forwarding=1 But every time I am doing this, I get the message ...
1
vote
1answer
13 views

Linux Volume Encryption: Possible to specify your own Encryption Tool?

I want to use Volume Encryption on my Debian machine. Linux does have such a tool for that. But I want to use my own encryption tool to encrypt a partition. Now, is it somehow possible to specify it ...
1
vote
0answers
46 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 ...
2
votes
1answer
61 views

Usage of pinentry with keepass2 for gpg mail encryption

Debian Jessie, XFCE 4.10, KeePass2, IceDove (with Enigmail).. I'm using KeePass2 generated passwords for my gpg private key, to de/encrypt mails. Icedove is my client which uses the enigmail. As ...
2
votes
1answer
50 views

How can I encrypt a file?

I would like to download some files from my server into my laptop, and the thing is that I want this communication to be as stealth and secure as it can be. So, far I came up using VPN, in that way I ...
1
vote
1answer
501 views

How can I resize my encrypted root and home partitions, to give root more space?

I need to enlarge my / (root) partition, I have a lot of space on my /home partition so how can I do this? The drive is encrypted with LUKS. My system is Fedora 20. I have another thread here which ...
4
votes
4answers
302 views

How to identify LVM-over-LUKS or LUKS-over-LVM

I recently installed Fedora 20. I don't recall what exact options I chose for encrypting the disk/LVM during installation. It installed fine and I can log in etc. Here is the situation I have: I ...
3
votes
0answers
44 views

SHA512 salted hash code question

I'm puzzled by the hash (ASCII) code stored under Linux (Ubuntu) /etc/shadow. Taking a hypothetical case, let password be 'test', salt be 'Zem197T4'. By running following command, $ mkpasswd -m ...
0
votes
1answer
20 views

Simple encryption for ubuntu

How can I set an encrypted directory. Once accessed with a password, all files saved into it should be encrypted on the fly. It has to be possible to back-up as it were just a big file. And I don't ...
0
votes
0answers
156 views

Centos 7 - Encrypted installation won't boot

I installed CentOS 7 netinstall (minimal installation) on a VServer with the following partitions: /boot - 200MB - XFS / - 50GB - XFS Encrypted swap - 512MB - swap Encrypted I ...
3
votes
3answers
3k views

RAID5 recovery trying with “mdadm --create … missing”

First how I got in this situation: I had an RAID5 array with disks each 2TB (external USB-disks), I then wanted to create a larger encrypted array. Therefore I got 2 additional disks (also 2 TB each) ...
0
votes
1answer
22 views

Getting filetype of netcat output?

How can I use the file command on an output from netcat? For example: nc 192.168.1.1 1234 dGhpcyBpcyBhIHNhbXBsZSBzdHJpbmc= dGhpcyBpcyBhIHNhbXBsZSBzdHJpbmc= being the output, (sample base64 for ...
0
votes
0answers
18 views

fsix Gold Server with Goldkey smartcard. Need to decrypt volume

I have a client that stopped paying support to WideBand and I have no clue how to get their files off that server and onto something newer. I can logon over the network but when trying to bulk copy ...
2
votes
0answers
73 views

Creating an encrypted file container as a non-root user

Linux kernel 3.2.0-64-generic here (Ubuntu LTS if someone is wondering about kernel options / modules). I have some file space on this Linux server (~ 24 GB). I would like to use this space as an ...
5
votes
1answer
3k views

Linux: LUKS and multiple hard drives

I have a Debian Linux system (amd64) installed on a RAID-1 system encrypted device (LVM on LUKS) and will have a RAID-6 of >=4 disks where I'll put my data (LUKS and maybe LVM). I think the basic ...
7
votes
7answers
2k views

Secure FOSS alternative to Skype on Linux & OpenBSD?

Criteria: Makes audio/video calls Encrypts the whole traffic (using good encryption) Is cross-platform (including Windows 7, etc.) Runs on modern Linux distributions (Fedora, Ubuntu, etc.) Runs on ...
3
votes
5answers
1k views

Encrypt a password the same way mysql does

I've created a user ... but forgotten the password mysql> create user 'blayo'@'%' identified by 'right'; Which Linux command line tool can encrypt the password the same way mysql 5.5 does ? ...
1
vote
1answer
132 views

full disk encryption (including swap, possibly plausible deniability as well)

I'm looking for a method to encrypt my laptop including the swap partition. I also read trough older similar questions but mostly the answer included just a what not much of a how. (Currently I'm ...
2
votes
2answers
44 views

Automount EncFS unit

How can I automount an EncFS unit at login/start my session? I use Fedora 20 and KDE. Please don't mention apps like Cryptkeeper and so. I would rather console solutions.
2
votes
1answer
118 views

Debian Live 3.x with encrypted root filesystem

I'd like to build a Debian Live system based on sid with an encrypted root filesystem. It's quite easy to install a Debian system with a rootfs encrypted with dm-crypt/LUKS, so I suppose it's also ...
0
votes
0answers
100 views

Archlinux dm-crypt setup problem

I'm trying to setup dm-crypt to have complete encrypted volume and flash drive, that contains all the /boot partition.(i.e. in terms of archwiki I want to achieve #Plain dm-crypt(bit.ly/VNLKw0) ...
3
votes
1answer
103 views

How to get correct scan codes for my laptop keyboard without pressing a key?

I have a problem with the keyboard of my laptop which doesn't work properly anymore. However I have full control of the laptop via ssh. The problem is that I use a self encrypting disk (Samsung 840 ...
1
vote
2answers
64 views

Secure the content of a hard disk

I have to prepare a computer to give away, and I do not know who is going to use it. The computer has Debian installed, and the HDD is entirely encrypted. All users have their storage on the server. I ...
3
votes
1answer
985 views

Verify if a hard drive is encrypted on Linux

How can I verify if a hard drive is encrypted in Fedora 20? If not, does it mean I have to re install Fedora to encrypt it?
3
votes
1answer
130 views

md5deep utility giving wrong/different output!

md5deep utility gives different result when calculating hashes. I have used several online tools to calculate hash and they give same result but md5sum or md5deep program on linux gives different ...
3
votes
1answer
80 views

eCryptfs key in kernel image or initramfs

I have an embedded Linux system with unencrypted kernel image and initramfs in NAND flash. My RootFS is in SD card. I want to encrypted some files on SD Card as my SD card is easily accessible ...
3
votes
2answers
437 views

Creating a GnuPG keyring for apache

Here's the scenario, we're using GnuPG to encrypt data between 2 web servers. 1 is on RHEL. GnuPG will be accessed through cgi scripts to encrypt and decrypt. So I need a keyring that the apache user ...
0
votes
1answer
35 views

How to add a progress bar to cryptsetup luksFormat?

Example command. cryptsetup --hash sha512 -c aes-xts-plain64 --key-size 512 luksFormat /dev/loop0 This can take quite a while for big files / on slow disks. How to add a progress bar?
1
vote
0answers
103 views

Encrypt root file system and decrypt using U-Boot with key stored in FPGA

We are using Cyclone V, which essentially is a SOC comprised of FPGA + ARM core. Is it possible to encrypt the root file system and decrypt it by using U-Boot with a key which is located in the FPGA?
2
votes
0answers
211 views

Dual boot Linux partition scheme with encryption

I am trying to figure out how I should encrypt my machine. I am reorganizing and will have two 500GB drives. I am setting up a dual boot system (both linux). My prospective partition scheme: sda: ...
0
votes
2answers
99 views

Encrypting drive which has content

I have 2 hard drives 3TB each. The first of these drives is full with very important content. I have encrypted the second 3TB drive using the following technique: ...
0
votes
1answer
39 views

How to encrypt data in Linux while leaving access for certain app

Is there any way to set up Linux in such a way that a regular user can not view or modify an encrypted file (located on an encrypted partition probably), while he at the same time is allowed to work ...
0
votes
1answer
58 views

Dual Boot and encrypting Linux?

I have Windows and want to install encrypted Ubuntu (Home + Swap + System) - it giving me that option during installation when I'm choosing partitions so my question is will I be able to boot both ...
2
votes
2answers
520 views

Difficulty with EncFS on CentOS

I'm trying to figure out encfs, but am having some difficulty. This is what I have done so far: I created 2 test folders mkdir /home/oshiro/Desktop/encrypted mkdir /home/oshiro/Desktop/decrypted ...
4
votes
3answers
990 views

I want to use a bluetooth keyboard during initram

I use encryption on my hard drive. To boot I need to type a password during initram to decrypt the root partition. I'm running Archlinux on a tablet PC without physical keyboard (only Bluetooth). For ...