Questions tagged [encryption]

encoding information in a way so that it can only be decoded if a secret is known; used to prevent exposure of data to other parties

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Encrypted external hard disk not recognized

I'm using a dual boot system with Windows 8 and Fedora 31 KDE on my PC. I've encrypted my external hard disk with VeraCrypt in Windows. Windows recognizes this external hard drive and I can unlock ...
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PureOSL Luks no longer accepts password

I need help with luks not recognizing my password all of a sudden. I'm using pureos on a librem and I was having trouble getting wine32 installed so one of the things I did was add the debain main ...
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luks recovery of key safety hole

i found out that if you forget one of your 1-8 passwords for luks it can still be possible to recover it as a keyfile and then set a new password with that keyfile without remembering your old ...
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luks impact cryptsetup benchmark

i have a laptop with i5-8250U CPU @ 1.60GHz × 4, SSD and 8gb ram and am considering FDE. how do i know if the results i got from running cryptsetup benchmark are good or not? Algorithm | Key | ...
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Full disk encryption on Debian servers?

I installed debian 10 on my old pc (i386) using the full disk encryption option from installer. When I boot it nothing starts until i give the decryption password at the screen. Thus i cannot ssh to ...
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GRUB encrypted /boot fails to open after migration

I have a system that still boots legacy but has root on a NVMe drive, so it requires a USB drive to boot from and mount root. This USB drive is encrypted. Recently, the USB drive has started giving ...
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25 views

Luks encryption of root partition and UEFI

I have UEFI enabled in my BIOS and a Ubuntu installed in the single hard disk available in the machine. There are two Linux partitions in this hard disk: /boot/efi and /. I have recently booted via ...
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How to transfer files to an encrypted container from Mac to Ubuntu?

I have run a backup from my Mac to Ubuntu machine with rsync. rsync -av —delete ~/ me@ubuntu:/mnt/Backup/date However, I would like to make at the Backup folder a compressed and encrypted file. The ...
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How to compile keyslot_checker?

I want to compile keyslot_checker , but I get error gcc -lm -lcryptsetup chk_luks_keyslots.c -o chk_luks_keyslots chk_luks_keyslots.c:39:27: fatal error: libcryptsetup.h: No such file or directory #...
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ccrypt on Linux

How secure/private are files encrypted with 'ccrypt', from a command line under Linux. One uses ccencrypt file to generate the encrypted ouput. Is it comparable to the quality (security/privacy wise)...
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92 views

Openssl Relocation error

I'm trying to encrypt some files using openssl , it showing me following error openssl: relocation error: openssl: symbol EVP_mdc2 version OPENSSL_1_1_0 not defined in file libcrypto.so.1.1 with ...
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Echo cmd overwrites gpg file [closed]

I use gpg -e file to encrypt file, which leaves me with a file.gpg file. I cat the contents and its encrypted. (cat file.gpg). Then to test it, I do this: echo 'this is a test' > file.gpg This ...
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My disk doesn't want to unlock encryption

I use Debian default encryption disk encryption. When I boot I need to type my password, and then I will be logged in. However today I can't login. It always says that I typed the wrong password, but ...
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Create certificate with subject alternative names

Creating CA certificate that should contain subject alternative names (SAN). openssl genrsa -des3 -out ca.key 2048 openssl req -new -x509 -days 3650 -key ca.key -out ca.crt -config ca_server.cnf ...
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1answer
64 views

GPG encryption in Nautilus right click menu

I often use gpg command to encrypt files like so gpg -c file which produces a file.gpg. I would like to get rid of the command line aspect and have a right click button in my Nautilus. I tried ...
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Cloning ecryptfs drives

I have the task of installing Ubuntu on 1600 laptops that need s few folders encrypted using ecryptfs. I want to configured and encrypt 1 laptop then clone the rest. Will the clones also be encrypted?...
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Encrypting an hiding files on a vps

Recently me and a friend bought a vps. We use it mainly to mess around with but also as a remote workstation. Now we sometimes let other people use it. My goal is to hide and encrypt sensitive ...
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Opening a FiST Cryptfs dir from 2002

I have a dir from 2002 encrypted with CryptFS which uses FiST. In theory I can probably install a virtual machine running a GNU/Linux distribution from 2002, compile FiST and CryptFS - if I can find ...
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1answer
276 views

Encrypting whole disk with Luks (instead of one big encrypted partition)

Context Encrypting whole new external hard drive with Luks. I.e. it is not a system drive (will be used only to store data, not to boot the OS), and it is completely blank. Observation All ...
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Cryptography and the kernel, System calls

Is cryptography implemented in user space or kernel space? Are public/private key pairs generated in the kernel space? What about encryption or decryption using a given public key or a given private ...
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fstrim does not trim swap

I have set up an encrypted swap partition following this guide. My /etc/crypttab is set up like this (note the discard option on swap): rootfs UUID=<UUID_root> none luks,discard swap UUID=<...
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Is it possible to regenerate /boot partition of a LUKS drive?

I use Debian. For learning purposes I want to encrypt the whole hard drive. But let's say I am afraid of evil maid attacks so I want to bring my /boot partition with me always, and I put a boot ...
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Shell Script - Alphabet in code

I want to create an alphabet where each letter and character has a specific value. Example: A="99_banana" a="@_melon" B="22_GRAPE" b="orange" C="Strawberry" c="life" @="12399" !="tv_12" and so on ...
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Peer-to-peer encrypted L2TP

I'm trying to configure an encrypted L2TP link with the following additional requirements: There is a pre-shared key known to both peers. Ideally, the PSK would not be used as the encryption key (ie ...
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RHEL 7.5 unable to establish a ssh session, unable to exchange encryption keys

I am integrating Apache web server to siem. i am using SCP to pull the logs via ssh. when I am trying to connect on GUI of siem not able to connect giving the error unable to establish a ssh session,...
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Locked out on disk encryption

I bought a Darter Pro laptop from System76 2.5 months ago. Today all of a sudden I got the "please unlock disk cryptdata" prompt. I rebooted the box many times before and never had this prompt. At ...
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mount crypto_LUKS partition without decrypting (locally)

I have an encrypted external disk on a linux server. On the server, I can do this locally to decrypt cryptsetup -d keyfile luksOpen /dev/sdx1 /mnt/decrypted but I prefer to avoid doing that on the ...
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mount fail unknown filesystem type crypto_LUKS

I am facing a problem where I cannot mount a filesystem following decryption. All online searches for advice I have seen basically lead me to do what I have already - Anyone got any ideas? My initial ...
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libcrypto version not found, despite version being on my system

I'm trying to run some software, but I am getting this error message: ImportError: /usr/lib/libcrypto.so.10: version `libcrypto.so.10' not found (required by /home/jessica/project/lib/libgdal.so.20) ...
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Encrypting Passwords In Linux For Later Use

This is an interesting read that I found regarding encrypting passwords for later use, https://4sysops.com/archives/scheduling-powershell-scripts-with-usernames-and-encrypted-passwords/ Essentially, ...
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Can I mount and local repartition / encryption to the nbd?

I am looking for a way to mount a network disk and encrypt it on my local PC, in the way that the server won't be able to know the content of my files. After searching I found nbd, a way to mount a ...
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Will this firewall configuration prevent unencrypted traffic?

All incoming and outgoing traffic denied. Allowed outgoing ports: 53,67,68,443 Since I have not allowed port 80 and since programs use port 443 for https traffic by default, will this configuration ...
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174 views

Safe way to automount VeraCrypt container without showing password?

I have a Raspberry Pi 4 (4GB) running Nextcloud on it. Because all my data and backups are saved on external USB drives I will encrypt them with a VeraCrypt container. Mounting and dismounting the ...
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ZFS encrypted pool on Linux?

I'm currently playing around and testing ZFS and I really like it. Now I am looking for the best way to use it as a replacement for my standard setup with luks-based full disk encryption. How is the ...
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1answer
502 views

What is in this directory $HOME/.gnupg/private-keys-v1.d ? And where are the private keys stored?

In the .gnupg directory there are these files, (alpha numeric)*.key e.g. 1EFA02EFP.key What are they? Are these v1 gpg key files? And how do i import these? And where are the private keys held? I ...
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Which Debian-based distros gives clear easy dual boot setup w/Windows10?

Which Debian-based distros gives clear easy dual boot setup w/Windows10? My Windows10 is currently encrypted with BitLocker using TPM module and I'd like to also encrypt Linux with password or ...
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Being 100% sure whether or not there are any encrypted files on the system just by accessing grub during boot

Is there a way to know whether there are ANY encrypted files or directories on an Ubuntu 14 machine running in VirtualBox? The password for the account is lost, therefore I would reset it by booting ...
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1answer
971 views

Debian Full Disk Encryption: Does Debian Installer use LUKS 1 or 2?

During installation, whenever I put /boot inside an LVM on top of LUKS along with swap, / and /home, afterwards when I try to boot into it, it only gives me the minimal bash-like grub terminal. This ...
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1answer
69 views

Snapshottable encrypted folder

I'm trying to create an encrypted data folder which could periodically take snapshots of the current state of it. The snapshot should be an encrypted one, and I should be able to take snapshots ...
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1answer
294 views

LUKS: Wrong Password or Corrupt Headers?

I'm trying to gain access to my LUKS partitions after suddenly discovering that my password stopped working on all 4 LUKS partitions. 7 days ago when I tried booting and logging into my linux OS, my ...
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1answer
174 views

Problem with booting a newly LUKS encrypted root partition

I didn't encrypt my root partition when I was installing my Ubuntu 18.04 when 18.04 first came out (first few months of it's release) So for reasons I decided to encrypt it now. I know this question ...
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1answer
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Can shell-scripting help secure a client-side email address? [closed]

I have a website with a client-side HTML contact form created manually (not as output of an HTML constructor like PHP): <form action="mailto:someone@example.com"> Email Adress:<br> ...
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Logging shell sessions encrypted?

I log all my shell activity using script, but am worried that there are quite a few passwords and other secret stuff in these log files. Does anybody know of any way of logging the shell sessions in ...
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1answer
16 views

Encrypt folder with WebStorm projects

I have folder with projects in WebStorm. folder/ project1/ project2/ I need to encrypt folder to read & write unavailable. Everytime I open the WebStorm it'd need to enter the user ...
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Is there a way to encrypt my folder and my files from editing in Ubuntu?

Is there a way to encrypt my folder and my files from editing in Ubuntu? I want a way to protect my folder and content from editing, but I want to allow access to the files without giving authority ...
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1answer
63 views

concatenating aespipe files: wrong byte every 512 bytes after first file

I am working on encrypting a stream with aespipe to a logfile, and it makes sense to append to the same file every time I run it, so I wanted to do something like my_stream | aespipe -K my_key >&...
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Is there any way to get algorithm of any Encrypted String?

File command shows that the file is of any type of ELF, Text, Ascii, source code. Is any there any command or tool to identify the possible encryption algorithm for a given String? or to find possible ...
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1answer
472 views

Encrypting PDF with qpdf and only user password

Does anyone know how to set only the user password for qpdf encryption? I'm using Debian 10 (buster) and qpdf version 8.4.2-1 from unstable backported to buster. If I set just the user password (for ...
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Different files are being viewed using different ways to login (ecryptfs) [duplicate]

The issue: When logging in using a local access(typing password near server) and then using SSH, correct files exist in home directory of a user. When logging in using SSH and then locally both see ...
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Is encrypting HOME folder enough in linux?

I've been using Windows and Bitlocker for years. I recently decided to give linux a try because of the beautiful Deepin OS distro. Encrypting my device is a must for me and most of the tutorials I ...

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