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Questions tagged [encryption]

Questions about encryption such as home folder encryption, partition encryption and file encryption.

2632 questions
226
votes
9 answers

Create encrypted (password protected) zip file

How do I create an encrypted (password protected) zip file?
David Oneill
  • 12,614
168
votes
14 answers

Mount encrypted volumes from command line?

If I have an encrypted external disk (or an internal disk that is not in fstab), I see an entry for it in Nautilus -- with an entry like "X GB Encrypted Volume". I can click on this volume, and am prompted for a password to decrypt and mount the…
cha
  • 2,183
120
votes
10 answers

How to stop using built-in home directory encryption?

I have a new Ubuntu 10.04 installation with encrypted home directory (using the built-in encryption offered by Ubuntu installer). What's the easiest way to stop using encryption? (I.e., to decrypt my home directory permanently.) (It's giving me…
Jonik
  • 7,448
108
votes
5 answers

When installing I'm given the option of encrypting my home folder -- what does this do?

Does encrypting my home folder make my computer more secure? Do I have to enter my password more if my home folder is encrypted? What else should I know about encrypting my home folder?
David Siegel
  • 9,022
104
votes
2 answers

How do I enable Ubuntu (using full disk encryption) to call LUKSsupend before sleeping/suspending to RAM?

This question is related to another one by @Stefan, but it is not a duplicate of it. The questions are slightly different: the author simply wanted to know if this had been implemented, while I'm asking for help specifically on how to do this (in a…
Jonas Malaco
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103
votes
7 answers

How to change the password of an encrypted LVM system (previously alternate Installation, now advanced feature)?

I installed Ubuntu 11.10 with the alternate CD and encrypted the whole system (except boot) with the encrypted LVM. Update 2020: Encrypted LVM can be selected at the Installation type step of the Ubuntu install, click on Advanced features and choose…
Filbuntu
  • 13,891
99
votes
6 answers

Enable disk encryption after installation

I'm running 13.10 Saucy. If I didn't enable disk encryption during installation, is there any way to enable it post facto? I found this, which says that encryption has to happen at install time, but it's also referring to Fedora. I can easily boot…
Isaac Dontje Lindell
  • 3,775
99
votes
8 answers

How to encrypt individual folders?

Let's say that I have a folder, within my Documents folder, that has files I want no one to access without a password. Is there a way to lock down that folder so that it's password protected / encrypted? In fact, is it possible to password-protect…
Gonzoza
  • 2,528
96
votes
7 answers

How do I quickly encrypt a file with AES?

I want to encrypt a file using AES-256. How can I do that quickly and easily, and how can I - or someone else -decrypt it again?
Stefano Palazzo
  • 88,393
89
votes
5 answers

How to use https with apt-get?

Does apt-get use https or any kind of encryption? Is there a way to configure it to use it?
Strapakowsky
  • 12,304
73
votes
7 answers

How to secure my laptop so that hacking by physical access is not possible?

I messed up my system earlier, I was greeted with a black screen, when booting in to Ubuntu. When I started up my laptop, I selected the recovery option from the grub menu, and chose fallback at root terminal. I saw that I was able to use the add…
blade19899
  • 26,994
69
votes
7 answers

Is there a tool to encrypt a file or directory?

What's the most popular way to encrypt individual files or folders?
user8260
67
votes
4 answers

How to Encrypt /home on Ubuntu 18.04?

Disappointed to see that the 18.04 installer no longer offers the option to encrypt the home directory. According to this bug report referenced in the installer, the recommended method for encryption these days is full-disk with LUKS, or fscrypt for…
elight24
  • 671
64
votes
2 answers

How to encrypt external devices?

I've been a Windows power user/administrator and professional tech for years, I just made the decision to go Linux, and wow, what a difference. Is there any decently easy way to encrypt external volumes (i.e. USB keys, external hard drives,…
user307939
  • 641
64
votes
6 answers

Is there a tool that can add a password to a PDF file?

I've found lots of info on decrypting PDF files, but none on encrypting them. What tool can do this for me? Edit: There are two good answers below, but in my specific case the PDF was a scan, not a document that I'd created.
mfisch
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