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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Unlock encrypted partition via web interface

I want to encrypt my Jellyfin Database. Due to the lack of an encryption feature on Jellyfin itself I consider just encrypting the whole db partition via the OS. But I want to be able to unlock the ...
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Can different tox clients communicate with each other?

More specifically, if I run qtox on my linux desktop, and TOK on my iOS, can I log in to both with the same credentials? Can I communicate with other people using the tox protocol, regardless of which ...
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Should DNS queries for the time servers be encrypted?

When it comes to encrypting DNS queries using dnscrypt-proxy, people also tend to use dnsmasq on their linux machines. The main goal of this setup in the past was to provide cache for DNS queries, but ...
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grub password protection necessary or overkill in an encrypted system?

I run debian with full encryption and wonder why I would also need a password protection for the bootloader...
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How do I encrypt the system disk with VeraCrypt on the command line on Linux?

I've installed Raspberry Pi OS and VeraCrypt on my RPI. I have used VeraCrypt (and, previously, TrueCrypt) for many years, but always on Windows and with the GUI. Now I try to use it on Linux on the ...
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Set Up encrypted Debian on my Thinkpad 7th - few questions re devices etc

I posted yesterday but could not access my guest account anymore. I have registered this one now. I managed to install Debian on my 7th gen Thinkpad according to the following guide: https://wiki....
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Same gpg command applied on the same string but got different result

I'm new to GPG and I've learned some basic GPG commands recently. I just found that using the same GPG command to encrypt the same data always generates different result. Below is an example. Is is ...
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Does *BSD have the ability to encrypt a system partition with full disk encryption?

Does FreeBSD, NetBSD, or OpenBSD have an encryption feature like Linux's dm-crypt? And will it work for a system partition?
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How to verify a public(facebook's) key ? and then sign and trust them

Recently I enabled gpp emails option in facebook. Then they sent me a test mail to check whether I'm able to decrypt that or not. So first I downloaded there public key from Here and imported in my ...
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What does it mean by gpg encrypting a file with multiple recipients?

To encrypt a file using a person's public key, I can use the following command. gpg --recipient anonymous@anonymous.io --encrypt --armor file_name I don't quite understand when this command has ...
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Cannot decrypt files on a Mac using openssl

This is the command I used to encrypt the files on my Mac around 2017. I don't know if my Mac was running High Sierra at the time or not, because I am usually late to the party when it comes to ...
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How can I increase the size of an encrypted swap partition when the root partition already takes up all free space?

My laptop is getting kinda slow, especially when having Firefox opened with multiple tabs, which is why I'm trying different ways to make it a little snappier. It has an Intel Core 2 Duo T5600, 2 GB ...
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Is there a way to have nano to pipe output to another program's input?

I have a program A that pipes its input to nano this way: program_a | nano -. I want to make edits with nano and pipe it again to another program B, without having nano to write anything on the disk (...
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Backup a LUKS encrypted device on the cloud

I am going to use LUKS for encryption, however I cannot find a thoughtful manual and best practices how to do so. Here I will list my questions, sorry for naivety. Apparently I don't need to encrypt ...
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Does Raspberry Pi OS support encryption on the RPI 1 WITHOUT extra hardware?

I have a RPI 1. The original. It is crucial for me, for basic bottom-line security, that all my machines are encrypted and cannot be booted/read once powered off without somebody entering the right ...
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Elementary OS Luks passphrase not working

the past days I installed a lot of software, some of them from KXStudio Repositories, after that a reboot was required, now as the computer boots up and cryptsetup appears, my passphrase is not ...
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Files lost by encfs

I would like to ask you for a help. I recently used the software encfs in my ubuntu 18.04 laptop. I created a new stash using the same software in my desktop. I would like to list the steps.... I ...
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How to automatically encrypt and forward mails from root account?

I have a debian 10 server and I want to forward all mails from root to an ordinary email-address but encrypt them with gpg beforehand. Here on Stackexchange I found a solution with procmail, but after ...
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How to close/remove volume/file created by bdemount (Bitlocker)

After I use bdemount to decrypt a Bitlocker encrypted volume on my Linux system, how do I close the volume? First I decrypt the volume like this sudo bdemount -p MYPASSWORD /dev/sda1 /mnt/bdem1 This ...
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Remove luks encryption from single partition of disk

I've been trying to figure out dualbooting windows 10 on my ubuntu laptop for a few says now - my 1tb hdd is encrypted with LUKS and after battling finding a way to partition it, I was finally able to ...
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vsftpd with “encrypted private key”

I have created a FTPS server using vsftpd. When I use an unencrypted private key, vsftpd works fine. rsa_cert_file=/etc/vsftpd/unenc_cert.pem If I have to use a certificate that contains an encrypted ...
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rsync end-to-end encryption when using a VPN?

I have a need to securely transmit data between two endpoints via rsync. This is illustrated in the diagram. My client wants me to use a VPN connection, as the VPN server already exists and is used ...
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Unset encryption flag after removing encrypted folder (using fscrypt)

I have two versions of a product that need the possibility to upgrade/downgrade between them. The newer version has an encrypted folder using fscrypt. This folder is inside a folder that already ...
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How do I access my password GPG files after having moved files onto another computer?

I have been using 'Pass' to store passwords in gpg files, however I have now moved to new pc and have no clue how to access. When I try to access them through pass I get the message 'no secret key'. I ...
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Backup tool for pulling files out of encrypted disks?

Are there any backup/cloning/recovery tools that can pull files from LUKS-encrypted disks while dropping free blocks? Something that runs from within the unlocked system and hot-transfers the files, ...
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Luks encryption with no passphrase

I have successfully installed Arch Linux with full disk encryption, however I omitted a passphrase in the hope that when starting up I won't be asked for a password. However it still asks me for a ...
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Encrypt home folder after installation

I installed manjaro more than 2 years ago. I did not choose to encrypt my home folder during installation. Now, I think I want this. Can I do this now?
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cryptsetup failed with code 22 invalid argument

I have read `cryptsetup luksOpen <device> <name>` fails to set up the specified name mapping https://www.saout.de/pipermail/dm-crypt/2014-August/004272.html And tried cryptsetup open --...
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Fully encrypted Linux Mint install over multiple drives

I want to fully encrypt a fresh install of Linux Mint Cinnamon 19.X, including the boot-loader. I need a fully secure system. My current setup is as follows, which is pretty much how I'd like the ...
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Using GPG keys on multiple devices?

Say I encrypt a file using my private GPG key on my desktop. I then transfer the file to my laptop, and intend to decrypt it. What do I do? I heard something about "exporting a public key", ...
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Re-Enable Full Disk Encryption

I recently installed Ubuntu 20.04 and selected full disk encryption. The first few times I booted up I had to enter the password to decrypt the device. However, I had to fix the boot loader after ...
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Protecting (encrypting) system from even root access

I plan to provide a Linux appliance to several users. These users are tech savvy and can easily reset the root password on a standard linux system. How can I create a running Linux system that keeps ...
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take in and return ordinary text with gpg in the terminal

I made a text file: $ cat sheep.txt mary had a little lamb ..then encrypted it in the terminal: gpg --encrypt --recipient 49673952 sheep.txt Now there are two sheep files: $ ls -la sheep.* -rw-r--r--...
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ConnMan: how to store password as hash?

We are looking for a way to get ConnMan to hash passwords (hashed on disk, i.e. not in plain text). We are wondering if it is possible to enable such feature by compile-time definition or runtime ...
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Encrypting swap partition

So I've recently struggled with encrypting both / and /home partitions with LUKS, without using LVM while installing Arch Linux. The goal was simple - unlock with only one passphrase, without the need ...
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descript synology folder from backup

Last week my Synology diskstation had a crash of its volume. I was able to recover all files from a backup and my VMs by offloading the VDMK files, but one of the directories I only have in encrypted ...
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Remote unencryption start-up hdd ubuntu 18.04

So ideally I would have posted a comment to this thread SSH to decrypt encrypted LVM during headless server boot?, but apparently I am not allowed to do that until I have 50 reputation.. Anyway I ...
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Does ecryptfs offer integrity protection?

I would like to understand if ecryptfs offers integrity protection. This means that if decryption is successful, I can guarantee that an attacker without my key was not able to modify the files, and ...
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How to encrypt nfs which is mounted on AWS ec2

We have netapp volumes attached to EC2 instance. these are nfs , which are sync with on premise and make sure data in on premise and that of NFS which is mounted on EC2 are in sync. even though ...
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Security considerations for encrypted home dir in case of an untrustworthy root

Heiho, although I have done some manual encrypting using various tools I consider myself a noob. Recently I worked on a tiny project utilizing PAM. Thereby it occurred to me that root can get hold of ...
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pictures encrypted using seahorse-nautilus do not open after decryption (but thumbnails are visible)

Ok, so here's what happened. As long as I've been using Linux (~2014) you could compress folders and individual files from right-click context menu, while also adding password at the same time. Then ...
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unable to cache luks passphrase in seahorse

i'm running searhose 3.30.1.1, gpg 2.2.12 on debian buster / xfce and using thunar volume management. i'd like to cache the passphrase for an luks encrypted ext hdd so i don't have to enter it each ...
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Installing Kubuntu with Manual Partitioning & Encryption

I'm trying to install Kubuntu 20.04 with LVM encryption on a dual-boot machine. Previously, I'd done this on Mint per these simple steps. In brief, all you have to do setup your partitions manually ...
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Initialization Vector reuse in ext4 filename encryption

The fscrypt document says: Because of the requirements to retain support for efficient directory lookups and filenames of up to 255 bytes, the same IV is used for every filename in a directory. ...
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Can one clear “encrypt” feature on an ext4 filesystem?

One can set the "encrypt" feature on an ext4 filesystem with: tune2fs -O encrypt /dev/device How much overhead is with ext4 encryption? If the user no longer needs encryption on this filesystem, is ...
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gpg asks for password when supplying it in a file?

Trying to run this: gpg -c --passphrase-file secret somefiletoencrypt But it still asks for a password. How do we make gpg use the password in the secret to do symmetric encryption?
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Is there a way to encrypt a Hard Disk such that, it is impossible to prove that it is encrypted?

Is there a way to encrypt a Hard Disk such that, it is impossible to prove that it is encrypted? Say I have an HDD that is encrypted. When fell into the wrong hands or a hacker, is there a way to ...
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How to use TCPREPLAY to decrypt a PCAPNG file?

I have a pcapng (wireshark) file encrypted with cryptcat. I also have the password. Just not sure how to decipher the packet. The following pcapng: Source IP - 172.16.0.37 Port Source - 40986 ...
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Encrypting home folder without filename encryption using `ecryptfs`

ecryptfs encrypts home folders with filename encryption by default. However, because of this, filenames with more than 143 characters can not exist in the home folder (while an unencrypted ext4 home ...
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How to decrypt Cryptcat with key?

I have a Pcapng (Wireshark) encrypted file with Cryptcat and I also have the Password, how can I decrypt the file? Can't find anything relevant. Only things like: "Is it Really Secure? Not if your ...

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