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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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
111 views

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
190 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
2k views

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
71 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
65 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
157 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 ...
0
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1answer
183 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
112 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 ...
0
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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
271 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
789 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 ...
2
votes
3answers
93 views

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 ...
13
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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
540 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
votes
1answer
397 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
votes
1answer
139 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
169 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 ...
3
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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
votes
2answers
14k 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). ...
10
votes
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 ...
2
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3answers
149 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
358 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 ...
11
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2answers
349 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
72 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 ...
12
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3answers
9k views

Free/Libre software to handle TCG OPAL 2.0-compliant Self-Encrypting Drives (SEDs)?

I'm in search of a free/libre software that is able to handle OPAL (2.0)-compliant SEDs (i.e. manage the setting of Pre-Boot Authentification (PBA) environment, encryption keys...). It could be a ...
4
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1answer
126 views

Overwriting disk with random data vs. encrypted zeros

Most disk encryption guides recommend to overwrite the disk with random data before encryption, this is discussed here. However the time this takes with the "standard" source of random data can be ...
0
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1answer
748 views

I want to encrypt my SSD, should I still use TrueCrypt or Is there a better open source alternative? [duplicate]

Before anything I have say that I have no experience with cryptography, at all. Anyway, I have a laptop with Windows 10 and an SSD. I don't want to use BitLocker since I don't trust Microsoft in this ...
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0answers
80 views

2mb of unallocated space on encrypted external HDD

I recently set up my new computer with Truecrypt's system encryption and for storage I added two external 2TB drives. Those are initialized as MBR-drives on which I created one partition hosted ...
3
votes
3answers
455 views

UEFI and security implications for encryption

After my old PC kicked the bucket I now own my first UEFI board and I am already having trust issues. I utilized Truecrypt's system encryption for years now and really got used to it. My new board has ...
6
votes
1answer
163 views

Locking Linux system to work on certain hardware only

Is there a way of locking a Linux system to work with a specific (pre-defined) hardware only? I am developing a commercial product and want to make it a bit harder for someone to clone the whole ...
53
votes
2answers
37k views

How secure is Ubuntu's default full-disk encryption?

How secure is the encryption offered by ubuntu (using the disk utility)? What algorithm is used underneath it? If someone could at least provide a link to some documentation or article regarding that ...
6
votes
4answers
1k views

Can the FBI or government agencies decrypt my hardrive and/or force me to give them the password?

I have seen other TrueCrypt questions as well "Windows encryption with BitLocker" and "Mac OSX encryption with FileVault". Does the FBI/NSA or other government agencies have access to my data or can ...
2
votes
0answers
57 views

Is stacking encryption a good idea for a file system?

Somewhat related to a previous question, is stacking encryption under and via file systems a good idea? For example, dm-crypt for the device, and then eCryptfs or veracrypt for the file system. If ...
8
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2answers
4k views

Secure Boot on Microsoft Surface Pro 3 (or modern PCs)?

Got a Surface Pro 3 today (it's awesome BTW!) and noticed in it's EFI that it's got TPM enabled, "Secure Boot" enabled (unsure what such an umbrella/catch all term actually covers) And then in ...
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4answers
194 views

Can data be forensically retrieved off an encrypted hard drive?

If a hard drive is encrypted, is it still possible to retrieve data off of it? What about if the password to decrypt it is known? If this is the case, given that OSX now encrypts your drive by ...
38
votes
9answers
6k views

Is full disk encryption on a server in a secure data center pointless?

I am having a debate with several people regarding how much protection full disk encryption provides. dm-crypt is being used to encrypt data which is required by my company to be encrypted at rest. ...
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1answer
83 views

How to reset (as it resets when pushed button on computer case) or immediately turn off PC (as if unplugged from power grid) from Windows?

I want to immediately reset (as it resets when I push reset button on computer case) or immediately turn off PC (as if unplugged from power grid) but with some method inside Windows. Maybe I can kill ...
0
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2answers
109 views

What are the advantages in using LUKS + hardware encryption on SSD?

I can't see what the advantages might be, but I think this would slow data transfer down while providing no extra protection. Am I right or am I overlooking something?
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0answers
140 views

A Solution for Block/File Encryption that is Corruption Resilient? [closed]

Question: What encryption features/(configuration options) are implemented that mitigate issues with device/block corruption? For example, if the external hard-drive gets dropped, the damaged ...
1
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4answers
282 views

What options exist for authenticated full-disk encryption?

Title says it all really. I'm toying with the idea of storing some disk images in "the cloud", but am concerned about the possibility of an attacker manipulating cipertext to do evil things once it's ...
7
votes
3answers
3k views

Is AES 256 secure enough for putting Backups to AWS or Dropbox?

How long would it take with current hardware to hack an Disk Image which was encrypted with AES 256? I ask because i want to backup personal files (contracts, tax-things, code, keys, private ...
4
votes
1answer
175 views

Android disk encryption

When is the data on an Android phone encrypted? I am assuming here that the device is configured to have full disk encryption enabled. Is it only encrypted when the device is powered off and ...
4
votes
2answers
262 views

Is storing encrypted data in a database futile?

The way I see it: there are two ways to encrypt data for a web app. 1) Store a single encryption key on the server, and use it to encrypt / decrypt data at runtime. The obvious issue here is that if ...
2
votes
1answer
336 views

Is FileVault 2 HIPAA compliant?

It looks to me like FileVault 2 uses AES 256 bit encryption for the desk. Does that mean that it meets the HIPAA "data at rest" standard? Is there something else I need to check about it?
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1answer
111 views

Attacks on encrypted computer?

I think we all know the fact that boot-harddrives can be encrypted. Windows usually uses Bitlocker (relying on AES-CBC) and Linux / Unix usually uses dm-crypt (relying on AES-CBC) and the rest of the ...
4
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0answers
213 views

Android wear, Tizen Encryption [closed]

Does Android Wear or Tizen for wearables offer hardware encryption? I have the Samsung Galaxy Gear S and I don't see an option, but was curious if it does it without any user intervention. I don't ...
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1answer
221 views

Storing encrypted information in database vs partition encryption

Trying to search for answers like Database encryption or filesystem encryption? but did not found what I need. My database contains confidential information. What is better? To store encrypted ...
3
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4answers
296 views

Securing Data at Rest in Android

Here's a situation. I am the author of an app that allows my customers to stream videos on their local android device. I also allow them to download the video and store it locally on their android ...