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Questions tagged [decryption]

42 questions
56
votes
4 answers

How do I mount an encrypted /home directory on another Ubuntu machine?

I've done something a bit, well, strange. I installed Ubuntu 12.04 directly onto a USB thumb stick, encrypting the /home directory as given the option during the install. The filesystem is btrfs, I believe. I've now stuck this into my computer…
Naftuli Kay
  • 4,344
8
votes
8 answers

Enigmail not asking for pgp passphrase but saying no key available

decrypting emails with enigmail in thunderbird does not work anymore. It is because I don't get the chance to punch in my passphrase, a form asking me to do so used to pop up, now it's not and I'm getting this message: Error - no matching…
Bronk
  • 81
6
votes
8 answers

PGP Enigmail Problem, can no longer decrypt or sign my own messages

From one day to another my Enigmail Thunderbird Plug-In stopped working and I can no longer decrypt messages send to me encrypted with my public key. Even if I wrote these messages myself. Every time I try to decrypt a message the following error…
SmCaterpillar
  • 436
6
votes
2 answers

Decrypt TrueCrypt containers using dm-crypt

Is it possible to decrypt TrueCrypt containers using dm-crypt? I have some container files created with TrueCrypt and I just wanted to know if it's possible to decrypt them using dm-crypt so I can stop using TrueCrypt and use something more…
oshirowanen
  • 4,047
6
votes
1 answer

How can I batch decrypt a series of PDF files?

I have a bunch of PDF documents I know the password for and would like to decrypt them. How can I achieve this?
Glutanimate
  • 21,763
5
votes
2 answers

I don't have the LUKs password for my HP notebook

I got an HP notebook off someone who is no longer alive. For some reason it's BIOS locked. I managed to solved that problem, then during reboot it asked for "unlock disk sda3_crypt". I can't get any info from friends or family for what the password…
Darren Sutherland
  • 51
4
votes
1 answer

AEAD Decrypt error: bad packet ID on openvpn using UDP

having some sort of Decrypt error when using openvpn as UDP to connect to server, having this : Mon Apr 22 17:46:17 2019 AEAD Decrypt error: bad packet ID (may be a replay): [ #49607 ] -- see the man page entry for --no-replay and --replay-window…
SJang
  • 61
3
votes
2 answers

ecryptfs - decrypt and mount at boot with USB key

I have a system running Ubuntu Server as a testbed for some services that I want to get familiar with. I decided to let the installation procedure set up encryption. I knew all along that I would have to decrypt it with the passphrase in order to…
Josh McGee
  • 131
3
votes
1 answer

Encrypted Ubuntu 13.04 on SSD does not work

I got a fresh Ubuntu 13.04 full os encryption installed to my SSD. On boot I'm not able to type anything at all in the decryption screen. The keyboard works perfectly fine in GRUB, but in decryption screen it's like the keyboard gets disabled. I've…
user2600769
  • 31
3
votes
1 answer

Mount LVM encrypted partition on external HDD - Device /dev/sdc5 is not a valid LUKS device

Recently, my Ubuntu server was unable to boot on my 500Go HDD I removed the HDD from my server case, put it in an external case, and connected it via USB to an Ubuntu laptop. I have SSH access on this Ubuntu laptop. I can see the boot partition of…
SrvfUser
  • 2,085
3
votes
1 answer

Why can't I read encrypted DVDs after installing libdvdread4?

I have already installed libdvdread4 and I still get the message: Could not read DVD. This may be because the DVD is encrypted and a DVD decryption library is not installed.
Anthony
  • 31
3
votes
0 answers

How to read/extract the large files KNOPPIX, KNOPPIX1, KNOPPIX2 etc. from an old Knoppix installation using Ubuntu?

I have an old Knoppix installation on a HDD with encrypted user data for which I have forgotten the password, i.e. I can no longer access my data in knoppix-data.aes. Unfortunately, I also cannot remember enough of the password such that a…
sarahstern
  • 33
3
votes
1 answer

Decrypt ecryptfs files recovered from photorec

I have managed to recover files from a disk with a damaged partition table using photorec. Photorec does not preserve the file name or file structure so all I have are a bunch of randomly named files such as 013892.ecryptfs 02189421.ecryptfs…
jenny92718
  • 31
3
votes
0 answers

Decrypting External Hard Drive

A couple months back I had an old 350 gb Transcend external drive I forgot about and on a whim, installed Ubuntu on it. After using it for a couple months I decided to ditch Windows all together and installed Ubuntu on my laptop permanently, a…
tooHigh
  • 31
2
votes
1 answer

Error importing personal PGP key

I re-imported the PGP key into new system install. Now when I try to decrypt my backup text file, Ubuntu warns me Decryption Failed. You probably do not have the decryption key. Please help, I am new to Ubuntu.
daniel
  • 21
  • 2
1
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