Questions tagged [encryption]
Encryption is the process of transforming information using an algorithm to make it unreadable to anyone except those possessing special knowledge.
925
questions with no upvoted or accepted answers
5
votes
0
answers
3k
views
Can you dual boot 2 installations of Windows 11?
Say there's a case where you want a secure installation of Windows 11 and another normal one for games and less secure stuff.
Could one install Windows 11 on one drive and then encrypt it with ...
- 151
5
votes
1
answer
2k
views
Reading LUKS encrypted devices under FreeBSD
I have currently Debian installed. All my external devices a encrypted LUKS devices.
Now I want to switch to FreeBSD, but my question is, is it possible to read my devices under FreeBSD?
- 171
5
votes
0
answers
2k
views
Is this a ransomware?
I just got this window on my main computer:
Apparently, it's from Windows. I checked, and the process EXE file is the original one (efsui.exe or something like that). However, I don't use EFS (I ...
- 13.2k
5
votes
0
answers
1k
views
GPG agent over SSH (with vagrant)
I'm using vagrant for building and signing my debian/ubuntu packages but I'd prefer to not have have to copy my GPG keys into the virtual machine just to sign packages. It just feels insecure. Is ...
- 1,177
4
votes
0
answers
301
views
Unable to back up / rip an encrypted DVD
I have a home server with a bunch of disks to back up all my data (documents, pictures, etc).
I have a bunch of DVDs that I wish to use with post 2010-technology, eg devices without DVD drives. I don'...
- 606
4
votes
1
answer
3k
views
Open LUKS volume using key stored in kernel keyring
Has anyone managed to have cryptsetup open a LUKS volume using a passphrase stored in the kernel keyring? According to this article (see towards the bottom) it should be possible.
I have a passphrase ...
- 233
4
votes
1
answer
2k
views
How to get Outlook 2013 to encrypt using AES and not 3DES
In my company we are exchanging emails with a government authority once a month and they require us to encrypt those emails with encryption algorithm AES-128, AES-192 or AES-256. For the purpose we ...
- 141
4
votes
0
answers
977
views
How should I know if a motherboard support SEDs?
SED (Self Encrypting Drive) are more and more owned due to the rise of SSD.
Most of the time this functionality is not used because most of the motherboards in the market don't have built-in support ...
4
votes
1
answer
6k
views
How to enable SSD encryption?
I just bought a Samsung EVO 840, which supports AES-256 encryption.
Reading the very little documentation that I could find about SSD encryption, I found that I have to enter my BIOS, go to the ...
Nathan
4
votes
0
answers
1k
views
How to mount encrypted rootfs using uboot without entering password on beaglebone black
I am using Beaglebone Black as my board.
I want to encrypt internal eMMC of BBB.(rootfs)
I am using debian.
there is two partition on eMMC.
1st for boot :vfat 16 (which include MLO and u-boot.img )
...
- 41
4
votes
0
answers
677
views
Is there a tool like dm-crypt/luks using RSA encryption?
Is there a library/tool available for linux, similar to dm-crypt/LUKS using RSA encryption instead of symmetric ciphers? I want the "public side" to only be able to create these volumes, and the ...
- 191
4
votes
1
answer
265
views
Does TrueCrypt work on systems where the user data has been moved to a seperate disk from the OS?
I have a desktop computer with a small SSD and a large hard drive... as a result, I have installed my windows OS on the SSD but have moved all user data and programs to the hard drive except for "...
- 41
4
votes
1
answer
1k
views
Multi Encrypted Operating Systems with TrueCrypt
My laptop has a 250GB hard drive, and I currently use it to do a lot. I have Windows 7, Ubuntu 11.10, and BackTrack 5 on it, but I'd like to switch it up and add more security.
What I aim to do is ...
- 399
4
votes
3
answers
1k
views
3
votes
0
answers
259
views
Thunderbird cannot decrypt messages even though it has the private key and *could* decrypt the same messages just a few days ago
I can't understand this. Using Thunderbird 102.15.1 on Windows 10, and the private key was added to its native OpenPGP key manager more than 1 year ago. I have old emails that were encrypted, and ...
- 189
3
votes
0
answers
1k
views
How to clear PCR7 binding not possible?
I have been unable to find the requirements for PCR7 binding in Windows 11 Home edition. I have looked at various search results such as PCR7 Configuration Binding Not Possible, How do I enable PCR7 ...
- 151
3
votes
1
answer
1k
views
BitLocker can't enable encryption on this hardware encrypting drive volume because the drive bands couldn't be enumerated
I'm using Windows 11 Pro. I'm trying to encrypt an external HDD through BitLocker (Seagate One Touch w/PW SCSI), size: 2TB.
My PC Specs:
Error Message
BitLocker can't enable encryption on this ...
- 31
3
votes
0
answers
271
views
Is it possible to unzip in parallel with AES-256 encryption?
I compressed and encrypted (AES256) a folder with millions of JSONs using (in Ubuntu):
7za a -tzip -p -mem=AES256 json.zip json/
The compression seems to have gone fast, 4 hours or so. Now, I am ...
- 601
3
votes
0
answers
2k
views
Bitlocker on KVM/QEMU/virt-manager Windows guest using TPM passthrough
I have a dual boot installation on my Lenovo T480s: Windows 10 and Fedora 33. As I prefer working on Linux but need to have quick access to some Windows exclusive programs, I've configured QEMU (in ...
- 31
3
votes
0
answers
440
views
Password prompt when accessing a personal certificate in Firefox
When importing a personal certificate (for digital signatures and identification on government websites) into Firefox I get asked for the password to decrypt the private key. However when using this ...
- 31
3
votes
0
answers
80
views
File/Dir/Tar encryption pipeline - what md/cipher/mode?
I'm piping the results of a tar operation into openssl. File size is typically less than 10GiB. I've been doing some reading and come up with what I think would be considered secure and fast enough in ...
- 140
3
votes
0
answers
6k
views
How to decrypt .ts files into separate .ts files with ffmpeg without using a playlist?
I have a number of .ts files, .m3u8 playlist and a key to decrypt them. The key is a file, not a hexadecimal string. My goal is to decrypt some of these .ts files to analyze them individually. I also ...
- 41
3
votes
0
answers
4k
views
Bitlocker not compatible with current version of windows
I have an issue that I can't resolve through googling apparently. The issue seems to be that my external drive that I encrypted with BitLocker no longer works. Let me explain.
It happened after I ...
- 131
3
votes
0
answers
2k
views
BitLocker encrypted drive doesn't work on other PCs
I have a BitLocker encrypted 1TB USB drive which is usually always connected to my work PC, and it works perfectly:
However, if I try to move the drive to another PC, it will always say that the "USB ...
- 389
3
votes
1
answer
2k
views
How to find my LUKS encryption passphrase inside decrypted filesystem?
I have lost my encryption passphrase, however my computer is still on and I would like to know if there's a way to see my passphrase to avoid having to backup my data and reinstall.
The hard drive was ...
- 31
3
votes
0
answers
2k
views
Cannot mount dislocker file via loopback mount
I am trying to un-encrypt Windows 10 Bitlocker encrypted drives using dislocker. I downgraded my desktop to Windows 7 and only then found that Win7 cannot unlock the newer version of Bitlocker that ...
- 678
3
votes
0
answers
1k
views
How to install gpg-zip on Mac OS Mavericks?
I used to use gpg-zip on my Mac. I recently upgraded my system to Mavericks 10.11.6 and had to reinstall gpg and gpg2. I used homebrew to install gpg2, but gpg-zip wasn't installed. I tried ...
- 141
3
votes
0
answers
2k
views
gpg: xxxx: skipped: public key not found
I'm getting this error:
gpg: xxxx: skipped: public key not found gpg: [stdin]: encryption failed: public key not found
I'm using this code:
IEncryptionService encryptionService = new ...
- 31
3
votes
1
answer
2k
views
Why is "GPG -K" not showing all keys listed by "GPG --edit"?
Issue: I get a different list of secret keys when using gpg -K than gpg -edit, and the missing keys can no longer be used to decrypt. How do I fix this?
Example:
C:\...\>gpg --edit 11111111
gpg (...
- 61
3
votes
0
answers
378
views
What is the equivalent of Debian's "keyscript" in Fedora?
I am trying to put together a specific setup in Fedora. On boot, I should be asked for a password to unlock a keyfile located on a USB drive.
Afterwards, the system proceeds to boot normally. The ...
3
votes
0
answers
3k
views
How to mount LUKS/EXT4 disk in Windows 7?
I used the defaults in cryptsetup to create an encrypted disk with EXT4:
$ sudo cryptsetup luksDump /dev/sda # list property luks
LUKS header information for /dev/sda
Version: 1
Cipher name: ...
- 7,341
3
votes
0
answers
439
views
How do I migrate from ecryptfs to a similar setup using ext4 filesystem level encryption?
Currently I'm using ecryptfs - it's a software layer that encrypts my home folder with a key which is in turn encrypted with my password, and it hooks into PAM to unlock it on login.
Unfortunately, ...
- 486
3
votes
0
answers
262
views
How can I safely remove an RSA 4096 ransom-ware virus?
My dad's computer got infected with an RSA 4096 ransom-ware virus. For those who don't know it is a virus that encrypts all the files on your PC using an RSA 4096 encryption key. Then you need to use ...
- 31
3
votes
1
answer
4k
views
Can you mount a VeraCrypt partition to a folder?
I have recently encrypted a drive with multiple partitions using VeraCrypt. This is not the main drive with Windows installed on it, but a drive used to store data. Windows allows me to mount the ...
- 41
3
votes
1
answer
494
views
How to encrypt a live rootfs on Arch Linux
I have a Linux Arch system running on a VPS. The rootfs is installed on a LVM partition. I would like to overlay an encrypted container on this partition, then reinstall the rootfs on it and enable ...
- 153
3
votes
0
answers
441
views
Encrypt disk volume with LUKS, enable access without passphrase
How can I set “no passphrase, and don't prompt for one” on a LUKS volume, leaving it encrypted as is?
Enabling LUKS encryption is a one-way, time-consuming operation. I need to divide the set-up of ...
- 3,137
3
votes
1
answer
2k
views
Hide BitLocker "Unlock Drive" Notifications in Windows 10?
In Windows 10, when you mount an BitLocker encrypted drive (vhd in my case), Windows issues a notification prompting you to unlock the drive. Is there a way to turn off this particular notification? ...
- 31
3
votes
1
answer
2k
views
S/MIME email Public Certificate?
Is there a way to create a public certificate for a S/MIME email certificate?
I would like to share the public key on my website so people can send me encrypted emails. However I can only find "...
3
votes
1
answer
566
views
Recover EFS Certificate from dead Motherboard
I created an encrypted file with Windows 7 32-bit on a NAS (mybooklive) and backed the file (not the certificate) up locally to the computer's hard drive. The original Win7 computer had a motherboard ...
- 31
3
votes
0
answers
3k
views
gpg-agent fails with "command get_passphrase failed: End of file" on pinentry
I'm trying to use Enigmail with Thunderbird on Linux. GPG itself is set up, keys imported and I already can use the key management functions (including signing of keys) from kgpg.
But Mail encryption ...
- 938
3
votes
1
answer
74
views
How are encrypted Word documents stored?
I know that Microsoft Office files are basically just ZIP archives with a different file extension that contain XML files. However, when you select the "Encrypt with a password" option how are they ...
- 481
3
votes
1
answer
620
views
Dual boot and disk encryption
I need to dual boot these:
Unencrypted Windows 7 partition
Encrypted Linux partition (/ and /home)
I was thinking to erase the entire disk then:
Install Windows 7 then install a linux distribution ...
- 31
3
votes
0
answers
4k
views
Speed constraints of encrypted USB drives - Where are the bottlenecks?
I would like to keep my 1.5TB USB 2.0 external drive that I use for backups encrypted. I'm using TrueCrypt and have created a fully encrypted volume. This took 18 hours.
My question is:
Does having ...
- 244
3
votes
1
answer
3k
views
What happens if a crash happens while an encrypted volume is mounted?
I am using an encrypted truecrypt volume, operating out of word files stored on there.
I would like to know what would happen if the computer crashes while the encrypted volume is mounted? Will it be ...
- 41
3
votes
2
answers
650
views
Scramdisk for Linux (SD4L)
I can't find any evidence of people using Scramdisk for Linux anywhere. Is it a dead project, or is it just too new for people to trust its reliability and security? Have any of you used it for any ...
- 1,975
3
votes
0
answers
1k
views
Automatically Encrypt And Forward An E-mail
I'm looking for some mechanism to receive e-mail, automatically encrypt it and forward to another e-mail address.
Essentially, I want to this new e-mail address to be an 'off-site backup' of all my e-...
- 847
3
votes
1
answer
5k
views
Reading Encrypted Files from Android microSD Card
My wife had a Samsung Galaxy S3 which she just traded in for a new phone. I would like to get some of the files off of the micro SD card if possible but it was encrypted.
I have tried using ...
- 131
3
votes
2
answers
2k
views
GPG Symmetric Encryption: No Secret Key
Using gpg 2.0.22 I do the following as user A:
A@~: touch tmp
A@~: gpg -c --cipher-algo AES256 tmp
A@~: chmod 777 tmp.gpg
A@~: su -l root -c 'mv tmp.gpg /'
Then, as user B:
B@~: gpg /tmp.gpg
Now I'...
- 29
2
votes
1
answer
119
views
BIOS damage/change or virus: BIOS password not appearing and bitlocker suddenly asking for encryption phrase
Approximately 2 years ago I set up my PC (Windows) as follows:
I set up a BIOS password.
I encrypted the whole system with a bitlocker
password, so I need to enter a bitlocker password.
Usually when ...
- 21
2
votes
0
answers
562
views
How to copy an encrypted zfs filesystem without preserving the encryption key
I want to copy an encrypted filesystem (z/enc/a) from one computer (source) to another, and have it inherit the encryption key from the parent filesystem of the target system. I also want to compress ...
- 141