Questions tagged [encryption]

Encryption is the process of transforming information using an algorithm to make it unreadable to anyone except those possessing special knowledge.

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Security of an encrypted partition in a flash drive

I have a flash drive that I carry with me everywhere in a keyring for convenient access to personal files on other people's computers. In the past, these flash drives tend to get lost as they break ...
9a3eedi's user avatar
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Get owner password of pdf from qpdf decryption?

I have a pdf file which I removed the owner password using qpdf --decrypt encrypted_document.pdf decrypted_document.pdf However, I need to know what the owner password is. Did qpdf find the onwer ...
JobHunter69's user avatar
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NAS as storage save against encryption virus?

I want to buy a NAS storage so that I can RAID the HDD's to prevent lost data if a HDD fails and use it as long term storage that I can access anytime. The only non user error way to lose my data I ...
sirzento's user avatar
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Using python-gnupg library in AWS lambda function

I'm using Python 3.12 in an AWS Lambda function to decrypt PGP encrypted files. I'm using the python-gnupg version 0.6.0 library to do this. It decrypts files fine on my development Mac but fails when ...
writes_on's user avatar
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When I do a fresh install of win11 from usb stick, why is bitlocker enabled?

asking for a friend, doing clean install of win11, & logging in with MS account, it setups bitlocker, without being asked, and it doesn't save the key to the MS account, nor does it prompt you to ...
Xenek Stoehr's user avatar
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Encrypted .dmg file password no longer working - even older versions

I have an encrypted 10mb .dmg file on my Mac. The password is the same as the password I use to login to the very laptop I am typing this is on. The .dmg won't open and tells me the password is ...
Matt's user avatar
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Can I dd from one opened luks container to another?

I want to migrate my encrypted data from one drive to another. Both source and target should be encrypted. I've read in some other question, that I should create a new container, so that the superkey ...
Armin's user avatar
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Should one really disable AEAD for recent GnuPG created PGP keys?

Apparently, there are some problems with the new defaults that are set when one creates a PGP key using a recent version of GnuPG (2.4). I ran into this after generating a new ECC/ED25519 key to ...
Tobias Leupold's user avatar
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How secure is VirtualBox's VM encryption?

I'm using VirtualBox 7 on Windows 11. How secure is their disk image encryption? Where is the encryption key stored? If a third party gets access to the computer when the VM is turned off, what are ...
paranoidrunner's user avatar
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Is it possible to find password of a rar file when I have a file of its content? [duplicate]

Assume that I've an encrypted rar file and a file which is encrypted in the rar file (decrypted). Can it help me find the password to extract other files in the rar file?
hamidi's user avatar
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How to encrypt folder files using zip.exe [closed]

Example -path1 - desktop/file_source Path2 - desktop/e_data_source. How can we encrypt files from desktop/file_source to desktope_data_source path using zip.exe in cmd. Could you please help me.? Is ...
Siri chandana's user avatar
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How to decrypt a file that was encrypted on a different computer?

Some years ago, I have a RAR file that I encrypted on my computer. However, that computer died because of a power surge. When I got a new PC, I still have a copy of the RAR file. But, I no longer can ...
Diggz's user avatar
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How to get minimal vendor information about the TPM chip installed in my laptop

How do I get some minimal information about the TPM chip in my Linux laptop? Information such as the manufacturer, manufacturer id, manufacturer version. So far I have tried the tpm2_getcap command to ...
a001's user avatar
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Encrypting with generic GPG key in gpg4win

One of our business partners has a PGP domain key where the key is valid for encryption to any email address of the business. The user id of the key is like [email protected] - and for the life of ...
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How can I publish an RTSP stream to a MediaMTX instance with TLS encryption configured?

I have an instance of (MediaMTX) running on my laptop. I have an Amcrest IP camera. I can publish the camera's RTSP stream to the server so that the stream can be accessed from the MediaMTX instance. ...
cmd's user avatar
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Does Bitlocker ever automatically suspend protection for non-OS drives / partitions? Or would a user ever need to manually do this?

I know that Bitlocker can automatically suspend protection on an OS drive / partition to, for example, install certain system updates. And that sometimes the user might need to manually suspend ...
TechHorse's user avatar
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can anyone explain how user keys are verified (post host key/KEX, and not authorized_keys)? issue with ssh user key verify

Nutshell: Looking for a bit of an ELI5 explaining the protocol and/or implementation (openssh) of [post-KEX] user key verification (who does what) without being in code I don't understand or a too-...
zenfridge's user avatar
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Result is different between Phoronix test suite and openssl speed

I have the result from phoronix test suite openssl 3.1.0 and openssl 3.1.0 from phoronix folder. The result is different between phoronix and openssl. I don't understand how the value is calculated. ...
Oleg's user avatar
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Able to unlock BitLocker drive, but unable to obtain the 48-digit recovery key

I'm trying to obtain the 48-digit BitLocker recovery key from a failed drive. Here's what happened: Windows 10 Professional was installed on a Samsung 980 Pro 2TB drive. The login was a local user ...
My other car is a cadr's user avatar
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1 answer
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Decrypting .PFILE files

Long story short, while trying to convert my external SSD from exFAT to NTFS, I messed something up and ended up corrupting a folder full of EFS-encrypted files. I can see the files, but accessing ...
Andrei Iosifescu's user avatar
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2 answers
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I have recovered data from my broken SSD, but Chrome doesn't decrypt my passwords anymore

I'm running Debian Linux and long story short I had an SSD failure. I have successfully recovered parts of my user folder, like the .config and .local directory. I installed a new system on a fresh ...
MalackaPower's user avatar
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Bitlocker Encryption will not complete, completely locks up

I am trying to encrypt an external HDD with BitLocker, but for some reason the process crashed at 89.2%. I rebooted & removed and re-attached the disk (since bitlocker was completely locked up; ...
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When a folder is encrypted in Windows, where is the encryption data/keys stored?

I have an encrypted folder in Windows. Presumably there must be a key stored somewhere to access the data. Where exactly is the key stored? If in the registry, where in the registry? I have an ...
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How to use the `ssh-add` session on `openssl pkeyutl -decrypt`

I converted my id_rsa private key to the RSA format using ssh-keygen -p -m PEM -f ~/.ssh/id_rsa explained in this answer. I then added some handy aliases that will allow me to encrypt and decrypt ...
Martin Braun's user avatar
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Can someone help with deleted 7zip archive restore

As the title says, I recently deleted an archive in 7z on windows 11, I went into the 7zip recycle bin and can see it but i cannot restore it.. Any time I right click and hit "Restore" ...
IronDonkey's user avatar
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VeraCrypt - Permanently decrypt... - Error: VeraCrypt can in-place encrypt only a partition, a dynamic volume, or an entire system drive

I have a WD Red Plus NAS WD140EFFX - 14 TB - 3,5" drive that is encrypted with VeraCrypt AES(Twofish). It is not the system drive. I can mount the drive without a problem and the drive shows no ...
Ogglas's user avatar
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2 votes
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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 ...
PSt's user avatar
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Does AES 256 GCM have any restricted byte sequences imposed on its cypher text?

Specifically I am inquiring, if the cypher text can include a byte sequence such as 170303, which is one possible TLS record header. Normally the application that parses the TCP byte stream delimits ...
miran80's user avatar
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How to make S/MIME certificates available to mail recipients

I would like to use S/MIME encryption with our emails. I think that I understand how things are working and I am able to send encrypted mails between people when they have all the necessary ...
TomS's user avatar
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Bitlocker suddenly activated on my machine, prompting for recovery key that I don't have

I've run into a very strange problem with my Lenovo laptop (Windows 10 Home) and although people say it's not possible, it still happened. I have been using my laptop for over two years and have not ...
dushibida's user avatar
2 votes
1 answer
385 views

Command Line decryption of aes-256-gcm no-longer working after OpenSSL updated

Late last year (2022) I encrypted a file using OpenSSL using terminal on my Mac with a very simple openssl enc command and was able to decrypt using this command: openssl enc -d -aes-256-gcm -in ...
bakslaash's user avatar
-2 votes
1 answer
127 views

I encrypted files and folders on my USB drive and now I can't open them anymore

I used Windows encryption to encrypt files and I exported the .pfx file to that exact same drive, so I had to use a password to open files every time and it was all fine until one day when I ...
Lau's user avatar
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Operation failed with status 2: No such file or directory. How to recover?

I have an external backup disk for my Macbook. The disk has two partitions and both are encrypted. One partition has a copy of the systemdisk of my Macbook, the second keeps a Time Machine backup. ...
SPRBRN's user avatar
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In RSA or Assymetric Encryption, What EXACTLY is the purpose of the Private key? Do both hosts send their private key to each other?

First, let me know if i got anything wrong. The whole private and public key concept confuses me to no end. From what I know, basically RSA uses both public and private key. Public keys are PUBLICLY ...
lgrps's user avatar
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Does dm-crypt compatible with btrfs on dm-smr drives?

I want to setup a encrypted drive using btrfs on a DM-SMR hard drive. and I am concerning about dm-crypt don't expose ZNS interface to btrfs. I tried search but only get these: https://news....
hanyuwei70's user avatar
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1 answer
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Data Recovery from Veracrypt-Encrypted External Drive After Power Fluctuation [duplicate]

I find myself in a bit of a predicament and am reaching out for guidance on recovering data from a specific partition on a 1TB external hard drive, where all partitions are encrypted with Veracrypt. ...
Moldevort's user avatar
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0 answers
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Why was Bitlocker Recovery triggered on new working Ideapad laptop?

Starting today, my Ideapad 5 laptop that I bought in May and have been taking care of, only shows the Bitlocker Recovery screen upon boot, preventing me from proceeding into Windows. I do not know my ...
Rashid's user avatar
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1 vote
0 answers
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In OpenSSL, if I decrypt using a wrong password it just tells "bad decrypt" without showing the output. Is there a way to show it anyway? [closed]

I encrypted a sample test file using: openssl enc -aes-128-cbc -in test -nosalt -out encprova.aes128 Then, to decrypt: openssl enc -aes-128-cbc -d -in encprova.aes128 -nosalt and if I write the ...
Allexj's user avatar
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0 answers
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"Backup your file encryption key" message even if no files are encrypted

Since a few days, I get this message at boot: I probably opened files, from a ZIP, appearing in "green" (encrypted?) in the explorer, but I deleted them. Doing cipher /u /n /h shows that no ...
Basj's user avatar
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Wpa PTK and GTK in detail

I have been checking Pairwise and Group Transient keys in a network for security. I understand PTK is derived from = PMK, AP nonce (ANonce), STA nonce (SNonce), AP MAC address, and STA MAC address ...
C.Unbay's user avatar
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0 answers
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Can't access Samba drive from android devices as encryption is required

I am unable to access my samba drive from any android device. The connection fails even though the password is correct. Looking at the logs, I can see that the connection fails due to the lack of ...
Codrut's user avatar
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1 answer
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How to ensure authenticity of sync target in WiFi network (do not run sync outside of home WiFi)

This is my first question and I hope to explain the situation well. Short explanation: I have a home network with various clients and a TrueNAS NAS. The NAS is target for backup and sync services e.g. ...
Sikey's user avatar
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3 votes
0 answers
219 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 ...
Normadize's user avatar
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1 vote
1 answer
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Boxcryptor stopped working, how do I access the encrypted files on OnDrive, Dropbox, Google Drive?

I have been using Boxcryptor for client side encryption of files stored in the cloud for a few years now. They have been bought up by dropbox and the software stopped working today. How do I access my ...
bjelli's user avatar
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How to encrypt with LUKS a live Ubuntu usb stick that has been customized with Cubic?

I'm using Cubic (https://github.com/PJ-Singh-001/Cubic) to create a custom Ubuntu. So far so good, everything is going smoothly. However, I would like to encrypt the USB stick that contains my custom ...
Light Flow's user avatar
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0 answers
139 views

My Sandisk Ultra USB 3.0 32GB flash drive won't decrypt

I am running Windows 10 Pro 64. For some reason my Sandisk Ultra USB 3.0 32GB flash drive will not decrypt. It’s the whole drive that was encrypted I think. Its stopped working in VeraCrypt 1.26.7 it ...
Mr A 2016's user avatar
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1 answer
199 views

How to restore a backup from an bitlocker encrypted disk

I use the native Windows 11 backup app to make a full backup of my machine onto an external disk which is bitlocker secured. The backup tool i use is called "Backup and Restore (Windows 7)" (...
Jens Kisters's user avatar
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1 answer
67 views

Luks encryption not removing from Pendrive

error enter image description here When I try to install qubes Os to pWhen I try to install qubes Os to pendrive (SanDisk 64gb 3.2 gen 1) for live format while installing suddenly stopped and pendrive ...
PUGAZHARASAN's user avatar
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62 views

Windows boot loader corrupt on encrypted Windows 10

Good evening. I am looking for assistance in decrypting a HDD encrypted with Drivecrypt Plus Pack (or DCPP). In preparation for formatting, I uninstalled Drivecrypt from Windows without first removing ...
Matthew's user avatar
0 votes
2 answers
75 views

2-of-3 USB Data Backup

I have 3 usb sticks and have data that needs to be backed up securely. The 3 USB-Sticks will all be stored in different places and I want NO files to be recoverable from just one stick - I want it to ...
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