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Questions tagged [disk-encryption]

Disk encryption is the process by which every bit of data on a disk is encrypted, protecting it against unauthorized persons.

524 questions
86
votes
13 answers

Which TrueCrypt Algorithm is the safest?

If performance is of no concern, which TrueCrypt algorithm is the safest to use? AES Serpent Triple DES Twofish AES-Twofish AES-Twofish-Serpent Serpent-AES Serpent-Twofish-AES Twofish-Serpent
Amir Rezaei
  • 1,493
67
votes
14 answers

Trying to delete directory with "rm -rf", but get message that it's not empty

I've tried deleting a directory using "rm -rf" and I'm getting the message "Directory not empty": Bens-MacBook-Pro:please benjaminhocking$ ls -lart empty_directory/ total 16 drwxr-xr-x 5 benjaminhocking staff 170 Aug 27 14:46 . drwxr-xr-x 3…
Ben Hocking
  • 816
51
votes
2 answers

Does changing the encryption password imply rewriting all the data?

Let's say I have 1 TB of data on a partition encrypted with BitLocker, TrueCrypt or VeraCrypt. Does changing the encryption password imply rewriting all the data (i.e., will it take hours/days)?
Basj
  • 2,143
50
votes
3 answers

Why does my SSD internally encrypt data, even without a password set?

Recently I had an SSD fail and am attempting to do a data recovery. The data recovery company tells us that it is complicated because the build-in drive controller uses encryption. I presume this to mean that when it writes data to the memory chips…
Tyler Durden
  • 6,333
49
votes
8 answers

How to mitigate any privacy-related risks associated with taking your laptop for repair?

Either my fan or my battery on my refurbished laptop is malfunctioning and it frequently overheats and shuts itself down. I wasn't able to determine the culprit and thought it best to show my laptop to an expert. I also have an active warranty that…
user51309
  • 583
44
votes
2 answers

is there a way to stop mac osx disk encryption in progress?

I chose a 1T external drive for time machine and checked the "encrypt backups" option. I thought it will only encrypt the backups, but as it seems it is now encrypting the whole drive which has quite some data on it and is not SSD ;). Is there a way…
Vitaly Kushner
  • 1,550
40
votes
6 answers

SSH with authorized_keys to an Ubuntu system with encrypted homedir?

I recently set up a new server with Ubuntu karmic 9.10, and when I created my home directory I chose to make it encrypted. Now, after loading my authorized_keys file into ~/.ssh, it isn't recognized because my home directory isn't decrypted until…
Josh
  • 9,947
38
votes
3 answers

Is a volume with BitLocker "Waiting for Activation" encrypted or not?

In Disk Management, the partition says "NTFS (BitLocker Encrypted)": In the BitLocker Drive Encryption control panel applet, it says "BitLocker waiting for activation" and it has an option to "Turn on BitLocker": If I go to Settings > Device…
Jason
  • 8,203
31
votes
10 answers

How do I wipe an encrypted USB flash drive?

My company has issued an encrypted USB flash drive which I stored my personal data in it. I am resigning from the company and I wanted to wipe the data in the usb drive but I have forgotten the password. I tried using dban and nuke to wipe the data…
ilovetolearn
  • 477
26
votes
5 answers

How to change pass phrase of full disk encryption?

I installed Ubuntu 12 with full disk encryption, and now I want to change the pass phrase. How can this be done?
HappyDeveloper
  • 1,713
23
votes
4 answers

Is it better to use Bitlocker or the built-in-drive-encryption that my SSD offers?

My system: Intel Core i7-4790, which supports AES-NI ASUS Z97-PRO mobo Samsung 250GB EVO SSD (with built-in encryption option) 64-bit Windows 7 If I just want to encrypt my boot drive with AES256 or similar, what would be the difference / faster…
Eddie
  • 331
21
votes
2 answers

How to securely erase an NVMe SSD

It's generally accepted that SSDs cannot be securely wiped by writing patterns to the drive, due to features such as wear leveling and over-provisioning, and that the most secure way to wipe a modern SSD is using the ATA Secure Erase firmware…
Hashim Aziz
  • 13,835
20
votes
7 answers

Reading an encfs volume from Windows?

I've been looking into encfs as a solution to encrypt my personal data. However I want to access this data both on Linux and Windows on different machines (synced through Dropbox). So far all Google searches have brought up pages which specify that…
snth
  • 442
17
votes
1 answer

How do I resize a FileVault 2 encrypted partition?

Running Mac OS X Lion. My current setup is a 250 GB partition, encrypted by FileVault2, for Lion. Old Snow Leopard install is in second half, another 250 GB partition, unencrypted, of the same disk. The Disk Utility GUI doesn't allow me to delete…
Héctor Ramos
  • 273
16
votes
4 answers

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 options. You might need to load additional kernel…
Emma
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