Encryption is the process of transforming information using an algorithm to make it unreadable to anyone except those possessing special knowledge.

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Reformatting drive from a GUID partition to an MBR partition

I understand that Truecrypt is not compatible with an GUID partition but that is the limit of my knowledge. I am currently using a system that has a GUID partition but doesn't have bitlocker ...
2
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1answer
347 views

How do I determine what ciphers & cipher modes I can use in dm-crypt/LUKS?

I'm using an Ubuntu-based system, and I'm having difficulty determining what ciphers and cipher modes are available to me. The cryptsetup man page says: "See /proc/crypto for a list of available ...
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2answers
6k views

How can I access volumes encrypted with LUKS/dm-crypt from Windows?

The answer to this question used to be FreeOTFE (https://en.wikipedia.org/wiki/FreeOTFE); sadly, the project has not been updated for three years and its website (http://www.freeotfe.org) is no longer ...
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0answers
24 views

Fast disk encryption on Raspberry Pi

I need to have a trivially encrypted disk on my Raspberry-based server. As far as I know, Raspberry Pi doesn't have any hardware AES encryption. That means, the standard disk encryptions are awfully ...
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0answers
12 views

Boot fully encrypted Windows 8+ with GRUB without password using keyfile

I have a current setup so that my entire linux (including /boot) is encrypted and when I first start grub a password is needed to access /boot from my linux partition. But my entire windows partition ...
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5answers
10k views

How to encrypt a file or directory in Linux?

What's the most popular command to do such things as encrypting a file or directory in terminal in Linux?
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2answers
1k views

Full Disk Encryption with Two-factor Authentication for Ubuntu: How?

Background Information I'm a Linux newbie recently weaned off Windows. I'm currently using Ubuntu 11.04 without full disk encryption. Only my home directory is encrypted, and with eCryptFS. Lately, ...
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0answers
12 views

pgp decryption of file encrypted from named pipe as input does not decrypt to execution directory

if I encrypt data (via gpg) in the form of a flat file, on decryption (via pgp and with out specifying output directory) the decrypted file will write to the execution directory. If I encrypt data ...
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0answers
10 views

How to change from passphrase to encrypted key file in debian using luks?

I have four partitions plus /boot, each one with a different passphrase. I would like to manage unlock of all partitions with a single passphrase that decrypts the gpg.key file on the boot partition. ...
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1answer
27 views

systemd: decrypt luks device on access

I have an external drive with a LUKS-encrypted partition. As the device is an external USB device and I don't always need it, I only want to decrypt and automount on demand. I can easily automount the ...
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1answer
33 views

Fastest way to duplicate encrypted hard drives?

I used hard drive duplicator to do the sector-by-sector duplication of hard drives. I think it took about 5 hours. Pros: easy unattended, computer-free operation Cons: hard drive size ...
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0answers
31 views

Create incremental/complete backups from a fully encrypted disk using using TrueCrypt?

I have a tricky question about whole disk encryption and its respective backups ,particularly TrueCrypt, for which I have never found a great answer: What method do you recommend/use for create ...
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0answers
17 views

How to prevent Internet acees if SwitchVPN is not running

I've got a VPN Client (Switch VPN) that automatically starts on Windows login, but requires administratives elevations. As I am the owner of the computer (I share my PC with 2 other persons), I would ...
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0answers
9 views

Fedora login screen stuttering

I have the followwing problem with Fedora 22 (64bit): It boots fine, it shows the password screen for the encryptions all fine, then it takes a whole lot of time to even display the login screen. ...
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2answers
509 views

How to encrypt an external hard drive so a password is required only on computers other than my own?

I want to encrypt my external hard drive but I only want it to require a password if being accessed by a PC other than mine. This is because I have Backblaze set-up on my own PC and if Backblaze ...
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2answers
3k views

7-zip command line -p switch not working according to help page

I want to be able to automate the encryption of the file type .pcapng in a windows batch script. My current problem is that I get an error when extracting the encrypted file saying something along the ...
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9answers
14k views

How good is PDF password protection?

It appears that Word's password protection is not really good, at least until Office 2003, if I read this SU entry correctly. I'm under the impression that Acrobat's PDF password protection should be ...
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0answers
20 views

How to mount a truecrypt container with noatime?

I'm using the TrueCrypt GUI on Ubuntu and I don't think there's an option for specifying mount options in the interface. I want to use noatime, because it reduces writes to the disc. I have seen the ...
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0answers
9 views

Truecrypt system encryption in legacy mode and UEFI

I just recently got my first UEFI board and installed Windows 7 in legacy mode. This new system is encrypted with Truecrypt's system encryption feature but UEFI kind of startles me anyway. First of ...
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1answer
902 views

Does UEFI potentially leak encryption keys?

I just built my first computer in years and for the first time I now have an UEFI mainboard. I installed Windows 7 in legacy mode and encrypted my system partition with Truecrypt. Recently there was ...
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0answers
20 views

UEFI, encryption and system access

I have some questions regarding UEFI. My new mainboard is my first UEFI board whatsoever. I am running Win7 64-bit in legacy mode from an MBR partition, fully encrypted with Truecrypt. Since this ...
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3answers
47 views

Effective methods to prevent unauthorized access to my windows system

Problem : I have my windows machine where i used to randomly change password for 15 days,i fear that my friends might hack/misuse my pc with windows password reset tools [normally it would be used ...
66
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7answers
20k views

Compress and then encrypt, or vice-versa?

I am writing a VPN system which encrypts (AES256) its traffic across the net (Why write my own when there are 1,000,001 others already out there? Well, mine is a special one for a specific task that ...
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0answers
19 views

regex search compressed password protected files

I have a repository of a few million large text files. I need to regex search them on a regular basis. Because they are large, I use gzip to compress them and zgrep to search them. I have been asked ...
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2answers
3k views

dm-crypt/LUKS passphrase/keyfile length

I have a couple of dm-crypt/LUKS related questions. Setting up dm-crypt/LUKS with these settings: cryptsetup -c aes-xts-plain -h sha256 --key-size=256 -y luksFormat /dev/sda1 (1) Considering the ...
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0answers
34 views

Encrypted Drive. Forgot password. Remember parts of it. Less than 10 characters [closed]

So I forgot my password to an encrypted drive (encrypted via Truecrypt 7.1a) and I remember parts of it (let's say the parts of the password is "12345" at the end and "guan" in between everything)... ...
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0answers
28 views

7zip only asks me for a password once when I open an encrypted file

I archived some files on my laptop and encrypted them using 7zip and the first time I tried to open a file, it asks for the password, but after that it never asks for a password... is there a way to ...
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4answers
1k views

What can I do if I get a movie that is encrypted?

I have a movie and it is not working on KMP. This message appears on the screen: the video is encrypted please download codec How can I handle this?
4
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1answer
462 views

Encrypting a folder

I'm familiar with bitlocker, having been using it for a while, but I am looking at just encrypting a folder instead. But I just don't understand the options it's giving me. When I right-click a ...
0
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0answers
53 views

Windows 7 won't boot (encrypted with Truecrypt 7.1a)

How the problem occured: My laptop randomly shut's down (probably overheated). After the last shutdown it could not boot windows anymore I could choose to use startuprepair or start windows normally ...
2
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0answers
13 views

Anubis as GPG proxy [migrated]

I'm trying to setup GNU Anubis to act as a sort of proxy to sign/encrypt emails coming from a service. The service is currently configured to send email using our SMTP server. The idea would be to ...
0
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0answers
22 views

Encrypting a folder in Windows 7 [duplicate]

Recently, when I tried to encrypt a folder in my external HDD, I was presented with a dialogue box as given below: What' the difference between Apply changes to this folder only and Apply changes to ...
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1answer
18 views

Zipping / Encryption on Solaris 10

I have a dump file which I am zipping it up -> sending it over a network -> and burning it onto DVD. However, now i would require encryption AES 256 on the dump file. I am running Solaris 10. Is ...
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1answer
28 views

Should my OpenPGP key used for storing documents in the cloud expire?

I plan on doing a mass migration of all my local files to various cloud services since space is pretty cheap these days. I figure I should probably encrypt my data before I upload it, which is better ...
0
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1answer
26 views

SSD encryption for storage purposes [closed]

I have a laptop with a HDD (1TB) and a SSD (15GB). On the HDD I have 3 differnt OS installed. So I was thinking to use the SSD as a storage for Music and such so it can be accessed by all of the OS. ...
2
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1answer
26 views

Lets encrypt on a server with multiple websites?

I read the website for let's encrypt, to get it to work you: $ sudo apt-get install lets-encrypt $ lets-encrypt example.com But what if I am on a server hosting example.com, example1.com, ...
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0answers
20 views

Encrypted partition between Ubuntu 14 and Windows 7

I've created a 50 GB partition (NTFS) for sharing data between Ubuntu 14 and Windows 7. I would like to encrypt this partition in a "common" way between the 2 OS. Is there any way to do that?
0
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1answer
43 views

How to mount a encrypted tar file in Linux?

Let us imagine I have encrypted my tar file with gpg as we can see here but I want to mount that with archivemount (e.g.: answer) without holding the unencrypted file on disk. Is it possible? If not, ...
0
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1answer
18 views

Update certificate in Outlook contacts

How can I update an encryption security in Outlook contacts? I got an email signed with an updated certificate by someone who is already in my contacts with an expired certificate. If I REPLY to ...
0
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0answers
8 views

Can i check the Encryption of Data transmision for IIS7.0

I want to check this information : Cipher suites - Encryption: 3DES or AES-128 or higher - HMAC: SHA-1 or higher - Authentication: DSS or RSA Protocal support TLS version :.. is there anyway ...
1
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1answer
24 views

Trying to encrypt entire user folder but getting access errors

In my Windows 7 Pro system, I am trying to encrypt my entire user folder but certain folders or files keep throwing up flags like this: Now, I have granted the process of encrypting Admin rights, ...
1
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0answers
29 views

Encryption and Wake-on-LAN [closed]

What I want: I have a storage server that can be turned on remotely via WoL. Now I want to encrypt the data stored on the server without losing the ability to turn the server on remotely While I do ...
0
votes
0answers
23 views

Automated script to create/access an encrypted file with multiple recipients

My goal is to create an automated way of encrypting/decrypting some files using openssl. What I currently have are the public keys of the recipients (in PEM format) and the actual data I need to ...
0
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2answers
27 views

Can I use Silverlight to send encrypted videos to customers and will they be able to watch it?

I'm new to this whole subject so bear with me please. I want to sell and share videos with customers but I don't want them to be able to share those videos with anyone else. I thought that this was ...
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0answers
21 views

Encrypting and Resetting Surface Pro Tablets

Is it more secure to wipe a Surface Pro Tablet by first applying BitLocker Encryption drive, logging into the device and cleaning the tablet using "Fully Clean The Drive" option as defined under the ...
0
votes
0answers
39 views

How to set up a password to protect bitlocker key with tpm?

My computer is a dell xps12 (2013) laptop running on windows 8.1 pro, uefi and secure boot enabled. I successfully enabled tpm and encrypted system partition with bitlocker. I was a bit surprised it ...
0
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1answer
3k views

How to recover TrueCrypt partition deleted with Windows Disk Manager

I got a whole HDD encrypted with TrueCrypt (one partition, non-system disk). I have deleted this partition by coincidence with windows 7 disk manager. Now, I can't mount the TrueCrypt disk (saying ...
2
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0answers
57 views

How can I recover a partition after luksFormat?

How can I recover an ext4 partition after luksFormat? It was late one night when I decided to try gnome-shell 3.16 without messing up my Ubuntu box. So, I downloaded an Antergos image and booted it. ...
0
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1answer
42 views

How do I fix a cipher mismatch issue with sftp?

I'm running into an issue where a server was upgraded to RHEL 6.5, and we have automated bash scripts on an RHEL 5.9 install that connects through sftp and ssh commands. Now, the new server only ...
0
votes
1answer
17 views

LUKS encrypted volume lost upon reboot

Using this guide I encrypted a volume and am able to open and mount it manually. The problem comes after rebooting. On startup the system does not open the encrypted volume, nor is the decrypted ...