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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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 ...
7
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1answer
931 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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3answers
51 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 ...
67
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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
23 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
39 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
33 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
472 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
67 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 ...
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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
23 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 ...
3
votes
1answer
32 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
28 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
28 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
23 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
49 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
21 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
25 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
32 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
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0answers
29 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
28 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
26 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
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0answers
56 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 ...
2
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0answers
67 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
85 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
21 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 ...
2
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2answers
224 views

LUKS encryption with non-interactive login on RHEL6

I need to have LUKS encryption on this system but during lab development I don't want to have to enter the password at the console each reboot. I'd like a way to set a simple password that can be ...
0
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0answers
19 views

Sophos “Enterprise Console” Full Disk Encryption adding a user

We have rolled out the "Full Disk Encryption" from the Enterprise console suite. Recently new users are not being added after the machine was running - new users who login when past the on boot ...
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2answers
38 views

Is it possible to encrypt only certain data when a laptop hibernates?

I would like to achieve protection from both ends of the spectrum: On the one end you have the need to protect the sensitive data on the laptop. Encryption of the system disk means the data will be ...
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0answers
18 views

GPG agent over SSH (with vagrant)

I'm using vagrant for building and signing my debian/ubuntu packages but I'd prefer to not have have to copy my GPG keys into the virtual machine just to sign packages. It just feels insecure. Is ...
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3answers
3k views

Vulnerability of EFS (Encrypting File System) on Windows 7

I am looking into using EFS (Encrypting File System) at file/folder level on Windows 7. I read Wikipedia article on EFS and it does mention several vulnerabilities related to Windows 2000 and XP. ...
0
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1answer
62 views

root encryption with LUKS: root partition not found

The layout of my only disk is the following: /dev/sda1 for the plaintext boot partition /dev/sda2 for the encrypted root partition My system is ArchLinux and I followed this guide to set up root ...
1
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1answer
112 views

How to specify private key when decrypting a file using GnuPG?

I am trying to decrypt a file with GnuPG, but when using the command below: gpg --decrypt filename.gpg I get the following message: gpg: encrypted with RSA key, ID 3662FD5E gpg: decryption failed: ...
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4answers
39 views

Why isn't it possible to Encrypt and Compress a Folder on Windows?

I read this blog which explains why this isn't possible but I can't seem to figure out the reason. I find the blog a little difficult to understand. Can someone please explain why it's not possible ...
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1answer
48 views

How to remove the gpg signature from a signed file without creating a new file on disk?

If I have a 100 MB signed binary file that I download over the internet, I need 200 MB of disk space to open it. The file is just signed, not encrypted. When disk space is low, It is not possible to ...
1
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1answer
50 views

RC4 encryption of torrents safety

Torrent clients offer encryption of traffic using RC4, and people consider this, like, very safe to hide traffic information from ISP. Now since I have a website with SSL encryption, I know that RC4 ...
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votes
5answers
9k views

How to remove Encrypted flag when copying a file from a HDD to a USB drive?

Environment: Windows 7, but applies to other EFS-compatible Windows versions I have a file that is encrypted using standard Windows EFS encryption. When I copy that file to a USB drive using Total ...
0
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0answers
123 views

How to revert a LUKS encryption over ecryptfs

I had an encrypted /home folder under Ubuntu. As far as I can tell, it was encrypted using ecryptfs. It was using ~890 Gb of a 904 Gb partition. But then I tried Antergos, an Arch derivative, and made ...
7
votes
4answers
11k views

Bootable USB stick with Truecrypt

I want to boot the TrueCrypt rescue disk from a USB flash drive. I have Windows 7 64bit so I cannot use Grub4Dos to do this (it only works on 32bit system), and 99% of all documentations on how to ...
11
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5answers
12k views

Is it possible to encrypt home folder on windows 7?

Ubuntu and MaxOS has an ability to encrypt home folder in case laptop is stolen. Is it possible to do same thing on Windows 7? I need to encrypt home folder so it will be encrypted and decrypted ...
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0answers
31 views

What techniques can I use for audio and/or video chat that don't use SIP and complex layered architectures?

Point A few years ago a friend and I were messing around and we created a super-simple video chat link by running VLC twice on both our computers: one "watched" the local webcam and cloned the video ...
1
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1answer
56 views

Ubuntu 14.04 LTS on a ASUS Laptop

I have an ASUS laptop which I am trying to re-purpose as a Linux machine, to which I purchased a new 750GB hard drive. Yesterday I installed Ubuntu 14.04 LTS and followed general guidelines for ...
3
votes
1answer
150 views

Thunderbird GnuPG + Enigmail: encryption command failed

Yesterday Thunderbird complained that I used GnuPG 1.x and the next update of TB would not work with this version. So I upgraded my Mac (OSX 10.10 Yosemite) to GnuPG 2. Now I see that TB has a new ...
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1answer
604 views

BitLocker missing in Windows 8.1 Pro

This is a TPM-free laptop dual booting to Windows 8.1 Pro and Windows 7 Pro. BitLocker was turned on in Windows 8 Pro (before upgrading to 8.1) via group policy. Everything was fine initially, but ...
0
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3answers
2k views

Decrypt RC4 in Linux

I'm looking to decrypt RC4 encrypted data. I've tried openssl but it doesn't support my key length of 64 bits (my version only has rc4 and rc4-40). Encrypted data: ...
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0answers
14 views

Will reinstalling Windows break the encryption on other drives on whole encrypted hard disk?

My hard disk is divided on three partitions. I want to encrypt the whole hard disk with Truecrypt but when i have to reinstall windows i have to format C drive which means that it will remove the ...
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1answer
1k views

BitLocker vs. Encrypting File System (EFS) on Windows 7

So BitLocker encrypts the entire hard drive, while EFS encrypts individual files. Is there any difference in the way that they implement the encryption? Do they both use your user account password as ...