Questions tagged [decryption]

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2 Questions about GPG signing and decryption

Is it true that every time you sign a document, file, repository, package, email, etc. it becomes encrypted so that you need to verify it AND decrypt it? If so, how come you don't have to decrypt ...
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is it possible for decryption remotely to unlock disk sda5_crypt

I would like to know if its possible for remote decryption. i did setup a encryption password to my workstation for which i would like have it decryption remotely from my laptop. Any suggestions as in ...
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Can't open luks encrypted drive with bash

I try to mount an encrypted hdd. This works fine with this command in the terminal: sudo cryptsetup luksOpen /dev/sda1 myDisk --key-file /root/keyfile The hdd is decrypted and mounted after this ...
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5 votes
2 answers
601 views

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 ...
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I cant enter decrypt key to get into ubuntu, the characters are typing in upper left corner of screen instead of decript box in center

I have a fresh Ubuntu 16.04 Installation. This was a tricky setup to get an Encrypted Ubuntu install as Dual Boot with Win10 Pro. I mostly followed the recommendations as per this article (except did ...
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TLS handshake decryption

I have an offline Pcap file with a lot of data from many different protocols. I would like to decrypt the Transmission Control Protocol data from the 3-way handshake. Transmission Control Protocol ...
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3 votes
1 answer
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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 ...
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Decrypt external hard drive

How can I decrypt an external (USB) hard drive in Ubuntu 18.04? Unfortunately I can't remember how I encrypted it. I want to remove the encryption because currently I can only access the files on it ...
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1 vote
1 answer
1k views

How do I decrypt a home folder from another machine using fscrypt?

I have 2 machines (machine1 & machine2) both running Ubuntu 18.04. Both machines use fscrypt to encrypt the home folder (using login passphrase). If I remove the hard disk (hd1) from machine1 and ...
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3 votes
1 answer
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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 ...
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Update made me unable to decrypt my disk?

I installed an update via the Ubuntu updater, then I entered "reboot" in the console. Now when I enter my password to decrypt my disk it says that the password is wrong. When I start in Recovery Mode ...
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Using cores on multiple servers for bruteforce-luks

BACKGROUND: I have already created a passphrase list to use with bruteforce-luks. Unfortunately, that list was not enough to find the correct passphrase. I am assuming I missed out a word or 2. I ...
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How to make Ubuntu decrypt the specific directory?

From the nautilus context menu, I have right clicked on /home/myaccount/www/somefolder, then I have clicked on Encrypt Folder. Now I would like to decrypt the folder. How can I do this? "Decrypt" ...
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2 votes
1 answer
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Decrypt LUKS partition without losing data

I have a LUKS encrypted hard drive consisting of one single partition for the whole hard drive and it's encrypted with LUKS, I was wondering if I wanted to decrypt the disk completely(remove the ...
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3 votes
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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 ...
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1 vote
1 answer
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How to manually copy home files on hdd from live-usb [duplicate]

For reasons I won't go into on this thread, I would like to simply backup the home files on my machine using live cd. I have downloaded a live usb, and am currently running on it now. I cannot boot ...
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Full disk enryption while installing Ubuntu 16.04

While installing Ubuntu 16.04 LTS, I accidently checked the Full disk encryption box and entered the passphrase(known to me now) and then, didnt install the Ubuntu as partition system was not known to ...
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Auto-decrypt disk on startup? (retrieving password remotely?) [duplicate]

I installed Ubuntu 16.04 LTS and chose to do full disk encryption as well as home dir encryption. At startup, I'm asked Please unlock disk sda3_crypt and I have to manually enter the disk decryption ...
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Strange screen on boot

Yesterday I noticed that I have a strange screen when I enter a password. I mean the password to decrypt hdd. The same screen and logo is present when I shutdown computer. I use Ubuntu 16.04 with ...
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1 answer
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How do I specify a private key for decrypting in gpg

I use gpg on ubuntu and I have two keyrings I want to decrypt a message with my second private key but gpg uses the first key for decryption. How I specify private key for decryption? Thanks!
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1 answer
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Can't recover Passphrase after encrypting home folder after Ubuntu installation

I'm quite new in Ubuntu. I've tried encrypting my home folder after installation following this link: http://www.howtogeek.com/116032/how-to-encrypt-your-home-folder-after-installing-ubuntu/ However,...
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1 answer
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Encrypted home folder is only partially decrypted by ecryptfs

I'll make this as brief as possible: -Following an upgrade, lubuntu no longer boots -I installed ubuntu gnome on a separate partition -Within the new partition, I mounted the other (lubuntu) ...
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1 answer
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How to get wifi password from gnome keyring file with a C program?

My system is Ubuntu 14.04. I know all passwords on my system. I just want to write a C program, and to analysis the gnome keyring file in /.local/share/keyrings/ for getting wifi password. I found "...
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1 vote
0 answers
812 views

Decrypt home directory using mount pasphrase - files still encrypted

I am trying to recover data from an Ubuntu installation with an encrypted home directory mounted on a separate partition /dev/sda1. I don't have the login passphrase, but I do have the original mount ...
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1 answer
2k views

How can I delete encrypted files to recover HDD space?

I tried to re-install Ubuntu 14.04 LTS and I unknowingly checked on the option of Encrypt the new Ubuntu installation for security. Unfortunately I stopped the installation at midway, and then began ...
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2 answers
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Open a PDF which is password protected [closed]

One day ago, I downloaded a PDF that requires a password. Then I searched for software to decrypt the password that's called pdfcrack. Then I installed pdfcrack and ran a command in the Terminal: ...
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8 votes
8 answers
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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 ...
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Cannot decrypt on boot, keyboard not detected

I just freshly installed Ubuntu Gnome 14.10 but I can't decrypt my hard drive because my keyboard does nothing at the decrypt screen after Grub. Keyboard works fine on Grub though. Despite having it ...
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6 votes
8 answers
10k views

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 ...
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3 votes
2 answers
2k views

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 ...
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6 votes
2 answers
8k views

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 ...
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1 answer
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tar.gz file encrypted with truecrypt, how to decode it?

I have installed truecrypt and try it with tar.gz file, where I had some important data. Now when I mount this file I just see empty folder, and was not able to find some solution, how to decode ...
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Decryption of Windows HDD

Is it possible to decrypt a windows HDD (encrypted using BitLocker and Windows 7) using Ubuntu? I could not found any information on this? The problem is I know just the administrator password of my ...
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2 answers
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How to play DVDs which are encrypted (The Lord Of the Rings) [duplicate]

I'm a totally newbie within linux (programs - how to navigate through folders and so on - and commands as well - ...) - but I think linux is very interesting as well. I have now made a virtually ...
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3 votes
1 answer
396 views

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 ...
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2 votes
1 answer
21k views

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 ...
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2 votes
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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 ...
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3 votes
1 answer
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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.
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48 votes
4 answers
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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 ...
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7 votes
1 answer
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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?
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