Questions tagged [disk-encryption]

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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Bitlocker/Filevault and VeraCrypt together?

I'm researching ways to make the best encryption setup? What are thoughts on using TPM/Bitlocker or T2/Bitlocker native encryptions to fully encrypt a secondary drive, and then utilize Veracrypt to ...
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Is a password or passphrase needed with a keyfile backup to decrypt

In my search for an encrypted NAS i have come across a few products that talk about backing up the encryption key and storing it in a safe location. My question is if this backed up keyfile is enough ...
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Is plausible deniability actually feasible for encrypted volumes/disks?

Based on Is it possible to tell if hard drive is encrypted?, is it actually possible to hide a volume in practice? According to this answer TrueCrypt is the only well-known disk encryption software ...
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System Encryption With Veracrypt/Truecrypt- What is the difference between Wipe Mode “None” and 3 pass, 1 pass etc?

First I wanted to make sure we're talking about using a Non-SSD Hard drive. I know SSD drives work differently. Here would be a good reference/guide on system encryption: https://www.howtogeek.com/...
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Are Self-Encrypting Drives (SEDs) used in cloud environments?

I was wondering if SEDs are used in cloud environments, for example in data centers of CSPs like Azure or AWS? And if so, what additional protection do they offer beside from physical theft of the ...
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Why does LUKS use CBC?

I read that LUKS uses 256-bit AES with CBC by default. CBC, of course, has the disadvantages that if you change something in the plain text, you have to change everything that comes after it. In the ...
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How sufficient are these steps to prevent deleted SSD files from being recovered?

I'm selling a 4-year-old Dell PC with Windows 10 and two SSDs and I want to be sure that nobody can recover anything from my personal deleted files. So far I've done the following. Completely ...
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Non-obvious Mitigations for This DMA-Attack Demonstrated by F-Secure

Are there any non-obvious mitigations for the big DMA-attack revealed last year and demonstrated in this video by F-Secure? We know that Microsoft has published some material pertaining to DMA-...
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Are there any risks from cloning a LUKS encrypted partition?

I'm using an installation of Ubuntu server on disk, with some extra packages installed and configuration carried out, on disk as a kind of base image for repeatedly creating other systems. I clone ...
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Rotating Tang Keys - change Clevis bind without passphrase

Using standard RedHat documentation... https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Security_Guide/sec-Using_Network-Bound_Disk_Encryption.html Created enrypted ...
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Is it possible to boot an encrypted server remotely and securely?

Imagine you have a server that is at a location which is not trustworthy. People might have physical access to the machine who are not supposed to look at the data stored on it. In this scenario I ...
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How does Windows use the TPM for BitLocker encryption without an attacker being able to do the same?

How does Windows use the TPM for BitLocker encryption without an attacker being able to do the same? From this FAQ, I understand that BitLocker uses the following keys to encrypt the hard-drive: ...
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VeraCrypt - Windows boots Automated Repair on UEFI/GPT

OK. So I used VeraCrypt to encrypt the system partition and now Windows boots its automated repair only. After the repair in what I think is Windows Recovery Environment I can choose to boot off USB ...
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Decrypting possibly compromised Veracrypt hard drive

I have a Veracrypt encrypted hard drive, a system drive encryption with the operating system. The laptop is possibly compromised, which is why I can't decrypt it directly on the laptop I don't know ...
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Should i upgrade old volumes to new cryptsetup encyption mode?

old cryptsetup default is es-cbc-essiv:sha256. the new one is aes-xts-plain64:sha256. i don't know that much about cryptography but i assume the standard was changed for a reason. also there can be ...
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Best luks setup disk [duplicate]

I want to encrypt my disk but I want to know what is the best configuration, I currently use ths: cryptsetup -v --cipher serpent-xts-plain64 --key-size 512 --key-file=- --hash whirlpool --iter-time ...
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How secure is full-disk encryption technology on LineageOS, or Android phones in general?

We're attempting to assess the information security on our mobile devices, and information seems rather varied on the question of encryption. Is the encryption technology employed by Android-based ...
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How is it possible that hardware-encrypted flash devices are safe?

I start with the fact that I understand how flash devices (pendrives) can be encrypted with software, for example Bitlocker. Simply, the encryption key is the password given during encryption and ...
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Is suspend-to-ram really a meaningful risk for Full Disk Encryption?

Ubuntu offers full disk encryption relying on luks. An often recurring area of criticism is the fact that Ubuntu disables hibernation by default while suspend-to-ram stores the private keys in the ram ...
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Encrypting the /boot partition in a Linux system can protect from an Evil Maid Attack?

If the boot partition is encrypted (and the passphrase to unlock the device must be entered in GRUB before the boot sequence starts) is the system considerable safe from an Evil Maid Attack?
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What exactly is encrypted by “full disk encryption” on Android 5?

This page says "user data" gets encrypted. But that implies it's only a certain part of the full disk? Like "/data" or something? Can I copy a file from a PC to the internal storage to any place and ...
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Disk Encryption VS SQL TDE Encryption

I am trying to understand what would be the benefit of using SQL TDE on top of underlying disk encryption. My understanding is that disk encryption will prevent malicious users pulling out the disk ...
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LUKS partition encryption vs. .vmdk level encryption

Because of data classification that is stored on one of our servers we need to make sure that it is protected while in transit and at rest. While the first can be addressed with proper TLS ...
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How to decide whether to password protect key files in addition to full disk encryption

It is customary to protect certain critical files with a password. For example: PGP keys, VPN keys, password managers, etc. The practice dates back to before full disk encryption being common. These ...
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Windows BitLocker- Is the drive Password the same as the Key used by AES to encrypt the drive?

I am using BitLocker on my Win10. I encryted my usb drive using my Windows BitLocker with a strong password. I know that Bitlocker uses AES-~256 bit key for encryption. My question what is the key ...
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Protect LUKS encrypted HDD against boot sector key stealing attack

I have HDD with GPT, 1 MiB BIOS boot partition and LUKS encrypted volume group with data. When I boot the computer, GRUB asks for passphrase. However, I want to run some untrusted application which ...
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Two factor authentication and plausible deniability for disk encryption

Can you prove, for the most common disk encryption programs like Veracrypt or LUKS/dmcrypt, that a second factor like a yubikey or a keyfile on a USB disk is required? If this is not the case is there ...
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Is it too late to encrypt my already used USB drive?

I've had my USB for quite a while now. It contains quite a lot of personal information on it. (I know, I'm stupid for not encrypting it before hand). Is it too late to encrypt my drive even if files ...
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1answer
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EncFS vs EFS advantages for Dropbox-seamless encryption

I am considering a solution for securing my private data in Dropbox. In spite of OneDrive, MEGA and AmazonCloud are also being considered but now I put my focus on Dropbox as the most feature-rich of ...
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On a mobile, does using a password instead of a PIN make encryption stronger?

On a mobile, does using a password instead of a PIN make encryption stronger? What key does the phone use for its encryption? Would it use the PIN itself?
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Data deleted after encryption - recoverable?

My device (Android 8.0) is encrypted with the default encryption (no startup password). As far as I know, when I have data on my phone and factory-reset the phone, the data is unrecoverable, since a ...
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How can a user defeat anti-live forensics software?

Let's say I have a computer with full disk encryption which is logged and running, but I suspect it has anti-forensics software (eg. usbkill), which means that I risk compromising the integrity of the ...
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How is it possible for user's password to be changed after storage was encrypted? (on OS X, Android)

There are built-in functionalities to encrypt a storage on OS X (FileVault) and Android. On OS X: to enable encryption current user must have a password protected account. After enabling the ...
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Linux Plausibly Deniable File System

Is there any way to encrypt a Linux filesystem in such a way to maintain plausible deniability? E.g. "Hidden OS support," the way TrueCrypt and Veracrypt work, they only support Windows OS due to low ...
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Is there a file system allowing read-only access enforced by cryptography

Is there a file system standard (like LUKS) that allows anyone who can plug in the hard drive to read files, but requires a passphrase to modify or write? For example, I can do something similar by ...
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security of cryptsetup(8) luksRemoveKey, feasibility of extracting MasterSecretKey and using it later

I looked at https://crypto.stackexchange.com/a/24024 and it seems to me cryptsetup(8) luksRemoveKey is weak. The situation: I create new LUKS volume, copy stuff into it. I add a new pass phrase, and ...
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Wiping a smartphone/laptop for travel purposes

What is the best way to prepare your laptop and smartphone for travel? I envision having an encrypted back up stored at home; then factory resetting the smartphones/laptops for travel and installing ...
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I use full-disk encryption. Should I passphrase-encrypt my private key(s) anyway?

Suppose I want to use GnuPG on a GNU/Linux laptop where I've encrypted all filesystems (except /boot) with LUKS/dm-crypt. Backups are encrypted client-side and stored on a physically secure server. ...
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How is the DEK in a SED drive encrypted?

I am using a Samsung Evo 960 NVME SSD. I have encrypted the SSD using its built in hardware encryption features, which follow the tcg opal standard. If I understood correctly, the disk encrypts all ...
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Unattended Disk Encryption

I have been asked to implement disk encryption on a machine that needs to be able to run unattended. The machine has two disks. The first disk has a boot partition and an OS partition, while the ...
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BitLocker To Go password strength

When using BitLocker To Go, given that removable drives are inherently offline and may have to resist such attacks, what are the best practices / recommendations for password strength?
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Is there any downside to having a VeraCrypt file container that is almost as big as the drive it's on?

I am setting up an external hard drive to backup several computers to, and I want to keep its contents private by using VeraCrypt. I don't want to encrypt the entire drive because then when it's ...
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For LUKS: The most preferable and safest cipher?

I'm about to encrypt two of my hard drives using LUKS, since I can't really do it myself I use the guide on the Arch Linux wiki (which can be found here). In an example in the guide the cipher ...
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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 ...
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Is it possible to LUKS require both password and key file?

My goal is to be able easily destroy medium with key file in emergency situation and make system unbootable, even is potential advisor knows right password for the system. I'd store this key file in ...
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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 ...
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Can encrypted data be safely dispose off by quick formatting?

I have a Windows laptop machine with a traditional hard disk drive and I used it for a year and then I turn on the full disk encryption (Including system and non system partitions) using veracrypt fde....
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Enclosed FDE, Bridge & chipset FDE. what is the difference to SED

I was reading hardware based encryption, and found out that they are basically of 3 types. 1) SED - Encryption/Decryption done by the drive circuitry. Unlocked via Pre boot authentication. Can use ...
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Protecting/Crypting an external storage

We have an camera with sd card in which it records. AFAIK its software, recording parts etc., cannot be stepped in. We wish a mechanism/methodology that whenever it is plugged into usb socket of a ...
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When is Veracrypt an acceptable solution?

To manage security risks effectively, a non-profit organization has the following high level requirements; Limit access to authorized staff. Sensitive data is only accessible to authorized staff. ...