Disk encryption is a special case of data at rest protection when the storage media is a sector-addressable device (e.g., a hard disk).

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How to wipe disks before encryption with dm-crypt if CBC or XTS is used internally?

First, please forgive me if I'm posting this question to the wrong community. Feel free to migrate this post to the right community if I was wrong. I'm quite new to whole disk encryption (but not ...
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2answers
41 views

Creating a secure offsite backup at a friend's house

A friend has kindly allowed me to store a hard drive at his house to use as an offsite backup. I normally use rsync-backup to make backups of my home directory and have always done this (just being ...
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0answers
12 views

Can servers with encrypted root filesystems be made reasonably highly available? [migrated]

I have some servers I'd like to keep on encrypted disks, but I don't want to have to manually type a passphrase at every boot. I also don't want to keep the key on the machine unencrypted. TPM would ...
3
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1answer
100 views

What's the point of encrypting /boot or / partition?

I'm not talking about full disk hardware encryption. I'm talking about software encryption. encrypting /home prevents your data after your laptop is stolen. As far as I understand, encrypting / and ...
0
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1answer
110 views

Online vs offline backups [closed]

Up to this point I was using physical hard drives for backups, typically using dm_crypt as mentioned here. If online storage is used instead, and the provider cannot be trusted how much should the ...
2
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1answer
78 views

How safe is Apple's FileVault full disk encryption?

I have read about this encryption feature for OS X but want to know how secure it is compared to PGP.
3
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1answer
59 views

Is the Windows paging file safe in the encrypted partition?

I came across this setting called ClearPageFileAtShutdown. The setting is described here and says: If you are truly worried about security, boot Windows off a fully-encrypted drive. Then you ...
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1answer
39 views

What does “8.11 Encrypt or sign files into an archive” do?

I am going through the GnuPG manual and I want to encrypt a folder which, if my laptop was taken by anyone else, noone would be able to get access to for any of my information. This man page gives me ...
0
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1answer
62 views

How to secure (encrypt, password protect) external hard drive used with Windows 7 and 10? [closed]

How can I secure (encrypt, password protect) a portable external hard drive (500GB, NTFS) I use on a couple of different computers (not simultaneously): one computer is my work Windows 7 laptop, the ...
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0answers
25 views

Accessible data when hard-drive is encrypted

I recently acquired a new computer so I decided to try a few things, such as disk-encryption (fir the record, I installed Ubuntu 15.10, made only one partition, wiping everything that was here). I ...
3
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0answers
68 views

Method for securely removing files from a solid state drive

I've thought of a method for securely erasing single files on a solid state drive. This method will work only if the drive is encrypted, and it will work even if someone cracks the encryption key for ...
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1answer
47 views

How do I change LUKS backend to OpenSSL?

I know there is a way to do it, but I don't know how to do it: the default backend for LUKS is libgcrypt and I want to test it with the openssl cryptographic library. I was told that there is a ...
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1answer
56 views

How can I extract the encrypted master key from LUKS header?

I know that a LUKS partition has a plain-text header that stores many informations like master key (MK) digest, MK iterations of PBKDF2, information about the 8 key-slots etc. I also know that in the ...
0
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1answer
126 views

Encrypting the System Infrastructure

The requirements are to Encrypt the data in our servers 'at rest' and the 'database' - in short the whole infrastructure. Threat Model - to protect a possible data-breach by an adversary (or from ...
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3answers
115 views

Full Disk Encryption and Network security

I very recently had a job interview in which the interviewer asked me how full disk encryption helped improve network security? Initially I believe they are seperate and not linked, FDE is local to ...
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3answers
230 views

what does LUKS header contain?

What is contained inside the LUKS header ? I know, the header has size of 2MB. Also, cryptsetup supports "detached header", where the header can be stored in a separate file. Thus, for example, I can ...
0
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2answers
46 views

Is there a full-disk-encryption OR file-encryption solution where a trojan can NOT extract the secret key (e.g. from RAM)?

Is there a full-disk-encryption OR single-file-encryption solution like an operating system or a combination of devices or services ... that make sure that the master-decryption-key can NOT be ...
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2answers
78 views

Which is more secure a full disk or file encryption? [duplicate]

There are probably two ways to encrypt your computer full disk encryption which completely locks down the computer between when it is off and when it has booted but after everything loads you computer ...
3
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3answers
127 views

File encryption on a solid state drive

It seems a lot of computers are switching to solid state drives, and one of the downsides of this is that it seems to make encryption of individual files basically useless, because when you encrypt a ...
3
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1answer
61 views

Laptops SSD: Hardware Encryption plus DM-Crypt/Luks - Security and Performance

I just bought a new Thinkpad t450s, and put a Samsung 850 pro in it. My Cpu supports AES-NI and the SSD supports hard-ware based encryption. My question is, is there any reason to do Both ...
3
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3answers
329 views

Samsung SSD 850 EVO. Best way to protect personal data against thiefs

I'm wondering what is the best way to protect my personal data stored on Samsung SSD 850 EVO in Linux? I did some research and found this. To set an ATA password, simply access the BIOS, navigate ...
2
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1answer
115 views

Can I use more than one encryption program to encrypt my computer files or will it cause conflicts?

I encrypted my Ubuntu Linux Operating System in the installation process using the default encryption in Ubuntu if my computer is encrypted with one program can it be encryption with another at the ...
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5answers
158 views

How to make sure nobody has read this!

Is there any computer/server which would allow me to get "guaranteed read access history" for files? For example, suppose I made a file with my plaintext passwords and simply wanted to make sure that ...
3
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1answer
65 views

Securely read encryption key from NVRAM of TPM 1.2

I have configured a disk encryption in linux using LUKS with TPM with secure boot. The encryption key is loaded from TPM from NV memory using command TPM_NV_ReadValueAuth. The problem is that it is ...
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0answers
36 views

Is there a point in cascade encryption? [duplicate]

I was reading the other day about some programs (ex: DiskCryptor), and with my limited knowledge of cryptography.. I started wondering about cascading encryptions (ex: AES-Twofish-Blowfish). Assuming ...
6
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1answer
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Benefits of cloud based full disk encryption

Microsoft announced in May that it supported full disk encryption for VMs. They have recently merged a github branch into the Azure Powershell tools to enable this. The basic theory is that you ...
3
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1answer
115 views

How safe is the encryption offered by Mac OS X's Finder?

If you plug in a USB drive, open it in Finder and right-click the Finder window, you get the option to encrypt the drive. What methods does Finder use to encrypt the drive and how safe is it ...
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4answers
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Is a file shredder/secure erase necessary when you have full disk encryption turned on?

The password manager that I use has instructions to migrate to a new file format: Export existing passwords to a temporary text file Change password manager to new format Import passwords from ...
4
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1answer
63 views

When using FDE, is there any OS/software allowing to get back from hibernation without requiring the disk encryption key?

This question is a spin-off the following one: Are encryption keys wiped from RAM before hibernate, or how to do it (Luks and Truecrypt). In this question, an answer quoted the following message (the ...
3
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1answer
58 views

FileVault and Sleeping mode

I have FileVault activated on 10.10. (Mid 2012 MacBook Pro - MPB) I relaized already that there are different sleep modes. autopoweroff and normal Standby. Whenever the MBP goes into Hypernate mode, I ...
3
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2answers
120 views

Most secure way to deliver web app for offline access [closed]

Having built a web app based on a PHP stack which is deployed on a server, I would like to have a way to provide access to it offline. There's a database of patients and appointments that needs to be ...
1
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1answer
116 views

Is it possible to recover a Diskcryptor volume password?

Must admit to being dumb: I have encrypted one partition from my external hard drive with the AES-Twofish-Serpent algorithm and used a key file with a password. My PC ran into a problem and now the ...
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0answers
76 views

Whole disk encryption on a tablet (that has no pre-boot keyboard) [closed]

I am researching methods to encrypt whole disk on tablet. I would like to encrypt my tablet that comes with Dual Boot OS, with pre-installed Windows 10 Home and Android 5.1. Let's start with what ...
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0answers
16 views

Disk Encryption - Extended Boot Record protection

I posted something like this on SuperUser some months ago, but thought I'd try the security focused site. Anyway, I am working on a Disk Encryption project using OPAL drives. The OS is Linux, and is ...
9
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3answers
241 views

My Samsung SSD password is case insensitive, how does this affect Full Disk Encryption?

I have a Samsung Evo 850 SSD, the 500GB model and it's supposed to benefit from Full Disk Encryption (FDE). Once you set a HDD password in the BIOS the FDE is supposed to kick in. However, I was ...
4
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2answers
738 views

What are the pros and cons of using yubikey with ssd hardware encryption?

I'm considering trying out yubikey and I've recently discovered that the (crucial m500) SSD I recently bought supports hardware encryption. I think it should be possible to use a yubikey to provide ...
3
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3answers
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Encryption while logged in

If I'm using full disk encryption on my home computer, and it's online, are the hard drive contents encrypted when I'm logged in and using the machine (from the perspective of an online attacker - no ...
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3answers
2k views

Breaching security of a notebook with full disc encryption when screen is locked

I am using full disc encryption on my portable computer (running Ubuntu). The setup requires me to enter a password during the boot sequence to access fully encrypted hard drive. There is no ...
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2answers
361 views

What is the most “out-of-the-box” secure OS for a home user? [closed]

This question will encompass several topics and may also include user opinion. Here is the question, and how I want you to qualify it: Question: What is the most "out-of-the-box" secure OS for a ...
6
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1answer
288 views

Are encryption keys wiped from RAM before hibernate, or how to do it (Luks and Truecrypt)

Using Linux, I have system and swap/hibernation partitions encrypted with LUKS, and data partitions encrypted with Truecrypt, and I am wondering when I put my laptop to hibernation if the encryption ...
4
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1answer
98 views

LUKS TPM disk encryption attacks

Is it possible, or are there any known attacks, to get the encryption key for disk encryption tpm-luks? (Linux LUKS using encryption key stored in TPM) I know that there are attacks like cold boot ...
2
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1answer
117 views

Explanation of the XTS Encryption Mode

I've found many information about operation modes such as ECB, CBC, CTR, OFB and CFB. These modes are described precisely, but I'm not able to find information about XTS. The Wiki article is the only ...
2
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2answers
2k views

TrueCrypt VS LUKS Bruteforce Resilience

I have been researching LUKS vs TrueCrypt topics -- my only concern is security, but most of the discussions I see focus around usability / interoperability . I know TrueCrypt has a bunch of nice ...
5
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2answers
12k views

Is Truecrypt still safe? [duplicate]

I want to fully encrypt a disk on Windows 7, but I don't trust Bitlocker and Truecrypt has announced it is not safe (also many rumours about NSA being able to decrypt it and it's better to avoid it). ...
11
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2answers
3k views

How does Android filesystem encryption work?

I'm interested in encrypting my Android devices for security in the (hopefully will-never-happen) event of the phone being recovered by an unknown/unauthorized person. How does Android filesystem ...
3
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3answers
130 views

Are there risks associated with a strong password reuse for disk encryption?

I understand the risks of password reuse when we share the password with 3rd parties as perfectly discussed under this question: Is password reuse a problem if the password is very strong? However I ...
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2answers
306 views

Is automatic login with full disk encryption a risk?

I use full disk encryption on Linux and wonder whether there is any security risk ob having automatic login on the Linux itself. In case somebody breaks the encryption of the drive, they can read all ...
37
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5answers
23k views

Is there a reason to use TrueCrypt over VeraCrypt?

I am looking to encrypt a few drives of mine, and my ONLY interest is security. It is OK if my VeraCrypt volumes are not compatible with TrueCrypt, and vice versa. There is a lot of talk about ...
11
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2answers
318 views

When do shared disks “leak” data to other VMs, and how is that mitigated?

Inspired by this answer, I would like to know what are some common threats and mitigation techniques used to prevent one VM from leaking data to another via the shared storage infrastructure. ...
3
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0answers
61 views

Securely encrypt drive, able to be decrypted independently of the OS [closed]

I need a software to encrypt drives like USB pens, disc drives, ... to securely store the data. But most of the software I've found to encrypt and decrypt drives is OS dependent. For example Windows ...