Questions tagged [decryption]

The process of converting encrypted content (ciphertext) into its original, readable form (plaintext).

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1 answer
5k views

I turned off BitLocker encryption on my 5TB drive and now it continues to decrypt for days!

I am worried I will lose my data while the drive decrypts. It is now at 23.2% encrypted and continues dropping to 23.1 etc. Do I have to wait until it reaches 0% encryped before I can turn my PC off? ...
2 votes
1 answer
2k views

dm-crypt/LUKS, won't mount encrypted drive. Requested offset is beyond real size of device

I screwed up my partition table the other day but had recovered it with TestDisk. After re-writing the partition table, I'm able to boot up into GRUB and subsequently the interface for entering my ...
1 vote
1 answer
23k views

Decrypt sysprep unattend.xml user password

How do I decrypt user passwords that are encrypted and used in Windows 7 Sysprep unattend.xml file? What Encryption method is used in this file?
0 votes
0 answers
144 views

tshark decryption fails on old OS but succeeds on new OS

I have a pcap tracefile and private RSA key that should allow me to decrypt the HTTPS data in the pcap file. With the exact same pcap file, private key and tshark command, I find that decryption ...
0 votes
1 answer
2k views

How to decrypt Outlook traffic in Wireshark?

I have to follow Comparitech's SSL Decryption Guide: How to Decrypt SSL with Wireshark.  But it is not working for Outlook - Office 365 mail traffic.  I'm seeing traffic on port 443 only and it's SSL-...
1 vote
0 answers
49 views

How to know for sure which keywoard layout is active while entering passphrase for decrypting disk at startup on Ubuntu 18.04?

I have installed a brand new Ubuntu 18.04 distribution on my laptop and i chose to encrypt the disk. During the installation, i used a french layout (AZERTY) as i have a french keyboard. But now that ...
1 vote
0 answers
615 views

aes-192-cbc - Get the password from Salt, Key, IV,

A friend has sent an encrypted file and gave the password to decrypt it. openssl enc -d -aes-192-cbc -in file.tar.gz.enc -p -out file.tar.gz When I use it, I'm getting errors salt=ABC key=DEF iv =...
0 votes
1 answer
560 views

how to solve Kerio Control's Local Authority certificate issue with mobile applications?

I'm using kerio control firewall in our company and as you know it has an option named:"Https decryption". As I want to track all of the data that users browse in the company, I have to turn it on. I ...
0 votes
0 answers
37 views

Encrypted my private folder on a local network and couldn't open it

I have an account on my company local network and tried to encrypt my private folder and saved the key. but i can't open it even though i have the key and it says " access is denied " and i don't have ...
2 votes
1 answer
9k views

DVD Decrypter for linux

I am looking for an alternative to DVD Decrypter that will run under Ubuntu. Can anyone recommend software for this? I do not need encoding/transcoding or anything fance like that, my only ...
0 votes
0 answers
2k views

How to decrypt McAfee EPo drive / partitions manually after broken boot loader?

Windows 8.1 laptop disk was encrypted with McAfee End Point Encryption (EPo) software. Something was done with boot loader and boot of OS was coruppted (I don't know exactly), now data on C and D ...
0 votes
1 answer
2k views

Decrypt PGP message with private keys but forgotten passphrase

I forgot the passphrase of my PGP, but I have the private keys. Is there any "easy" method which doesn't take years to decrypt the PGP message?
0 votes
0 answers
2k views

Restore passwords from Google Chrome login file

I have reinstalled Windows recently and as a result lost all of my login data for Google Chrome with sites' passwords. A little research told me that I have to be under the exact same windows profile ...
0 votes
0 answers
991 views

unknown tag 26 encountered bouncy castle exception

unknown tag 26 encountered at org.bouncycastle.asn1.ASN1InputStream.buildObject(Unknown Source) at org.bouncycastle.asn1.ASN1InputStream.readObject(Unknown Source) at org.bouncycastle.asn1....
0 votes
2 answers
349 views

Windows 10 - Decrypt EFS encrypted [closed]

I encrypted files using EFS tool on my PC and then transferred them to another PC without transfer the certificate used to encrypt data, but then I want to retrieve them. I moved it encrypted from the ...
15 votes
3 answers
28k views

I initiated decryption of my bitlocker drive from Windows 8 recovery prompt. Any indication how long it will take?

Booted into the Windows 8 recovery menu to see if I could decrypt my secondary HDD with the recovery tools. Found that I can do it in the dos prompt there after unlocking the drive. However, after ...
3 votes
1 answer
2k views

Find string packet in decrypted data with wireshark/tshark

I am analysing a capture of encrypted traffic with wireshark. I have decrypted the traffic with the proper passphrase in wireshark and I can see the decrypted data of each frame. The point is that if ...
5 votes
1 answer
500 views

TrueCrypt - ran "decrypt" by accident on wrong disk which was not encrypted - how to "encrypt" it back?

basically I had normal, not encrypted disk, which I thought is my truecrypt drive. I booted from TrueCrypt Rescue Disk.iso and selected "Permanent Decrypt my data". It complained about key data being ...
2 votes
0 answers
398 views

How do I avoid all passphrase prompts for GPG2's asymmetric decryption?

I've made my own program which utilizes gpg for encrypting and decrypting (both symmetric and asymmetric). It works fine with gpg1 on all accounts, and it works fine with gpg2 for both kinds of ...
0 votes
1 answer
369 views

Corrupted text file with Microsoft Enhanced Cryptographic Provider written at top

I have a file containing some important information which I had marked as hidden on my windows PC. I moved this file to a USB and inserted the USB into my phone. The file had changed its extension to ....
0 votes
1 answer
901 views

Is it possible to decrypt a file without knowing password only an encrypted string?

I am stuck at a point, here I have encryptionkeys.db(i don't know the use of a file). The folder name is also encrypted(coded) I know the folder name(decrypted), with this I just want to get the ...
16 votes
1 answer
50k views

PGP file decryption from Linux cmd line

How can I decrypt a .pgp file to .txt file using a key(.asc file) with the Linux command line.
0 votes
0 answers
376 views

Trying to encrypt Hex to base64 via clipboard with AutoHotKey

I got a code that will decode highlighted URL to base64. Now I like to encode a highlighted hexadecimal to base64 but I cannot get it work : / As example, we have hexadecimal: ...
1 vote
0 answers
693 views

How to read/decode/parse HTTP/2.0 capture decrypted by Wireshark?

I thought Wireshark successfully decrypted an encrypted HTTP/2.0 connection once it was pointed to pre-master secrets from Firefox after setting SSLKEYLOGFILE. It shows the header when following the ...
0 votes
1 answer
2k views

Decrypting Application Data with (Pre)-Master-Secret log file in Wireshark

I've read a few articles outlining a process for decrypting SSL/TLS traffic without a private key. Session keys are generated in a log file, which are then read from Wireshark by point to the log file....
1 vote
1 answer
246 views

GnuPG encrypt a file using keys provided as files

I'm using GPG4Win to create a key pair. I'd like to be able to encrypt/decrypt a given file using myself as recipient so that I use exported key pair alone. I want to be able to do this from a batch (...
5 votes
1 answer
12k views

How to decrypt an S/MIME encrypted email using openssl smime?

For some reason, I seem unable to find an answer to this basic question. I have received an encrypted S/MIME email, and I want to decrypt it using openssl smime. However, I assume I am unable to ...
2 votes
1 answer
265 views

Hardware encryption on usb drive / stick

I am wondering whether there is a possibility to encrypt and decrypt an usb drive or stick with some microcontroller or single-board computer (e.g. Raspberry Pi) on the fly. For instance I want to ...
0 votes
1 answer
79 views

Javascript, Coding help requested [closed]

To start I am a noob, so explanation of whats happening or what needs to be done to complete the code would be extremely helpful. I had an issue come up at work, and I found an helpful stack ...
1 vote
1 answer
13k views

Decrypt with GPG, says I need a passphrase when I am inputting passphrase

I have 2 boxes, box A and B. Box A and B both use the same public/private key pair to encrypt and decrypt data. Everything works fine in box A, but in box B I can't decrypt the files i encrypt with ...
1 vote
2 answers
3k views

Configuring 802.1x PEAP credentials wireless Wi-Fi with PowerShell

I am trying to automate the Wi-Fi connection for testing purposes. Using netsh command in PowerShell I can generate the xml file and connect to any Personal Wi-Fi. But getting issue with the ...
14 votes
2 answers
9k views

Print (decrypt) a vim encrypted file

I use the -x option in vim to encrypt a file. I read this files much more times than I write to it, so I always use cat and then remember it is encrypted because of what it shows.. So then I have to ...
0 votes
0 answers
1k views

How decrypt file which was encrypted by windows 7

My User profile was deleted and newly added by me on today. I didn't delete user files and copied to new user profiles. but i can't open many of files. file name is green color. Therefore file should ...
0 votes
1 answer
7k views

Android - recover encrypted images

I have nearly 0 understanding of encryption, I just want to recover my old photos. In my old Android phone I used a certain photo-video locking app to encrypt my images. Images were stored on SD card....
0 votes
2 answers
1k views

How to decrypt files after BTCWare Gryphon?

My PC got affected by BTCWare Gryphon. I have tried different software such as Data Recovery Pro, 360 Document Protector, Kaspersky, and so on, but they couldn't help me. ID Ransomware claims that ...
0 votes
1 answer
190 views

Decrypt files after Petya ransomware attack in 2017 [duplicate]

Does anybody know if the recent flavour of Petya ransomware (active in June 2017) is somewhat different from one that appeared back in 2016? I am only interested in the decrypting approach. This was ...
0 votes
4 answers
768 views

What are my options in recovering data from a drive encrypted with Windows 7 Bitlocker

I used the windows 7 Release Candidate when it came out, which included in it the BitLocker software. I must have set it to encrypt my drive and I've completely forgotten about it when I ended up ...
0 votes
1 answer
286 views

How to get rid of the lock symbols on files which denies access when opened?

I have an external HDD, files within one folder are somehow encrypted due to a virus I assume. Whenever I try to read, copy, delete or even move the files within that folder it says access denied/...
2 votes
2 answers
3k views

How can I tell if Wireshark has sucessfully decrypted a capture

I have used Microsoft Network Monitor 3.4 in Windows 7 to create a capture file from my wireless g network by setting monitor mode. When loaded into Wireshark I can see the four way handshake and I ...
0 votes
1 answer
499 views

Speed up Truecrypt decryption with rescue disk

Is there a possibility to speed up the decryption of a volume while using the rescue disk? My Windows crashed and I am not able to boot Windows. Unfortunately the decryption of my 300GB Hard Disk ...
0 votes
0 answers
670 views

Chkdsk F: /f Aborted after Data Recovered From BitLocker Using repair -bde

A partition on my drive was protected by BitLocker. It stopped opening all of a sudden showing me the error message "The disk structure is corrupted or unreadable". I followed this article to ...
202 votes
1 answer
25k views

I am a victim of the Petya ransomware. Is there a solution to decrypt my disk?

My computer got encrypted by the Petya ransomware. After a long search I could not find a solution other than using file recovery software. This helps a bit, but I am wondering if there is a way to ...
1 vote
2 answers
11k views

Paused BitLocker encryption because no longer want to encrypt the hard drive - how do I get out of encrypting?

I'm hoping someone can help. I'm not a techy and can't seem to find the same question already answered. I went to encrypt (using BitLocker) a Buffalo hard drive but after it took about 1 min to ...
1 vote
1 answer
2k views

How is HTTPS browsing history monitored?

I am researching on how to monitor HTTPS browsing history. I am not a network person, so apologies if I sound ignorant in this issue. I googled the following questions below, but nothing substantial ...
2 votes
4 answers
901 views

How to be able to read encrypted files in the future, when the encryption tool is not available anymore?

I back up a lot of my files encrypted, but what I wonder is how to make sure that I will have access to this data in, let's say, ten years, when the tool that I used to encrypt the files is not ...
1 vote
1 answer
2k views

Bitlocker decryption not starting

I was about to do a fresh install of Windows 7 64bit on a laptop currently running Windows 7 32 bit with a Bitlocker encrypted 232GB hard-drive with 1.54GB free. I have already backed up all the data ...
-1 votes
1 answer
175 views

Decrypt file that was encrypted using a public key created from storagon.com

I recently downloaded a file with BitTorrent application. The file is encrypted. the file name is : AAAAAA.rar.{a key with length of 32}.storagon_encrypted Does anyone know how I can decrypt the ...
3 votes
5 answers
13k views

Cannot remove encryption from files on Windows 2008 R2

I have noticed that all of my web application files turned green color, which means they are encrypted. I have never applied encryption to these files. When I right-click the file, then go to ...
0 votes
1 answer
1k views

Centos 7 auto unlock encrypted hard drive

I have a Centos 7 server, and i have chosen to encrypt the hard drive in case someone breaks into my home and tries to read the files on my hard drives by directly inserting them into his own computer....
-1 votes
1 answer
331 views

Bitlocker on Windows 10

A year and a half ago I successfully encrypted my external Western Digital hard drive using Bitlocker. After a few days I disabled Bitlocker, so the decryption process started. Halfway through this ...