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Questions tagged [decryption]

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

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53 views

Unable to decrypt from stdin: “public key decryption failed: Inappropriate ioctl for device”

If I execute gpg foo.gpg I'm given a dialog that looks like: ┌────────────────────────────────────────────────────────────────┐ │ Please enter the passphrase to unlock the OpenPGP secret key: │ ...
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1answer
55 views

Decrypting plain text. PEM certificate

I have a text that is supposedly base64 encoded. But when I try to decipher it, an incomprehensible text comes out. But in principle, Latin letters are read. Perhaps this is a public certificate. How ...
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1answer
33 views

Cant we use md5 like hash algorithms to store big data?

i've read a paper about how hash algorithms word in general and i saw one strange thing. MD5 input length is unlimited and the output length are always the same so isn't that mean you can turn any ...
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1answer
21 views

Is the fastest open determined by preceeding key slots?

After installing LUKS (v1) devices with openSUSE LEap 15.2, it turned out that the iteration count was set so high that it takes more than 10 seconds for a successful decryption of the master key (bug ...
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196 views

How to Decrypt an Encrypted MPEG CENC OMA DCF with Bento4 sdk of FFmpeg

I have a file that was encrypted in CENC I believe, and I'm trying to decrypt it for over a few months now using mp4decrypt from the bento4 mp4decrypt tools but trust me I just don't know-how. This is ...
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34 views

Get HLS decryption key from browser

How can I get decryption key for AES-128 encrypted HLS stream. In the m3u8 file, the URI for key leads to a file which is of 48 bytes which is encrypted. The stream is played by browser so it must ...
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0answers
142 views

Decrypt AES-256 encrypted enc file with key

How can decrypt a "example.jpg.enc" file from telegram messenger that encrypted with AES-256 CBC with a key like this: i tried openssl for decryption but i had this error "error ...
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0answers
86 views

Decrypt AES 128 encrypted file with a key file

I have a file which is encrypted using AES 128 and I have a key file. How can I decrypt the file using the key file? The key file has no extension, I opened it in notepad and it has bizarre text.
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99 views

How to export Whatsapp chats to pc - without having an unencrypted chat being moved online at any point in time?

It does not matter to me whether a chat is end-to-end encrypted when at the moment of saving or exporting that chat, the whole chat gets exposed in its plain text. The question: How to export Whatsapp ...
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57 views

Decrypting EFS files on a non-bootable former windows drive

There are many questions like this one but this one is mine. Here is the situation: I had some valuable files on my Windows 10 system that I encrypted with windows built-in EFS. Now that drive has ...
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2answers
222 views

Is it possible to remove a disk encryption?

I have a question about disk encryption. I've read that the best tool to encrypt a whole disk on an existing Windows installation is VeraCrypt. I'm doing it for security and privacy reasons. But ...
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0answers
28 views

Decrypt .bso file with magic number EENZ

So I don't know if this question is relevant for this form, but I want to translate a game. I am not sure, but this game is probably made with Brune engine. I have a Scene folder with .bso files, They ...
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0answers
27 views

Cannot install window or delete partition in Bit locker encrypted drive

I am stuck in this very strange issue, I have surface pro 5 with 128Gb of disk space. When i try to install window it says "Your device is bitlocker encrypted" , it does not allow me to ...
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0answers
130 views

I have an incomplete physical encrypted iPhone backup that quit halfway through. Can I rebuild it with pieces from a complete backup?

I have an iPhone 6s running iOS 13.5.x, it was in the middle of a physical backup to my MacBook Pro when the iPhone started to bootloop (shortage of memory, Error 14). I have half of a complete backup....
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32 views

How can I decrypt EFS-encrypted files with a known password and existing encryption keys?

Recently, I've reset my computer due to a graphics card failure. My old user was placed in windows.old during the reset process, but I can't access my encrypted files with the new user I have created. ...
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1answer
287 views

GPG - invalid marker packet

can anyone help with the following gpg issue? Trying to decrypt an very old gpg-encrypted file (i assume it's a zip archive) fails with a simple "invalid marker packet". Trying --list-...
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1answer
40 views

Can I decrypt and encrypt again my OS drive and will I loose data in this process?

I need to decrypt my OS drive (turn off bitlocker) to be able to install Ubuntu alongside Win10, and I would like to encrypt again Windows side after the installation for safety issues. Can I loose ...
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0answers
935 views

Decrypt an ENC file using key

I am trying to replicate a decrypt process from a failing SOLARIS 10 box onto an AWS-linux environment: SOLARIS 10 command decrypt -a aes -i $PN/$FN -o $WDO/$K.$E -k $WDK/$K.key I have the key for ...
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1answer
8k views

“Login Data” file in Chrome - retrieve logins/passwords/URL's

I accidentally cleaned my Chrome passwords with some 3rd party software (yes I know - Im a genius!). I've never synced the passwords online. Still it seems that the data exists in "Login Data&...
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3answers
712 views

BitLocker Drive Encryption Recovery Error: Error Recovering Disk

I have this external HD which holds Photos of my whole life, Video Tutorials and Ebooks. It has two partitions (H: and I:) and both partitions were Bit Locker Encrypted. I have recently moved to Mac (...
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1answer
64 views

What does 'Unk:' mean in 'Stored' column of `unzip -v` output?

Running unzip -v archive1.zip, where archive1.zip is an encrypted archive, I get the following output: Archive: archive1.zip Length Method Size Cmpr Date Time CRC-32 Name -------- --...
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68 views

downloading encrypted m3u8 file time limit

I wanted download videos from an app. So I used Charles to get a page which provide video url. https://film.izdax.cn/api/v2/tv/46/url/1 this page was encoded with extra windows backslash like this. ...
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2answers
5k views

I need to view my windows credentials password

I lost a password ,but it is saved under windows credentials. It will log me in to certain apps but if it's something I haven't logged into yet it won't. I have a .crd file ,which I got by backing up ...
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388 views

How can I read the contents of a crd file as plain text (i.e., recover my passwords)?

I lost all my passwords due to a dumb mistake I did yesterday. These passwords are really important. My computer has them saved under Windows credentials. However, I can't view passwords stored under ...
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1answer
925 views

Decrypting file in openssl 1.1.1c from encryption in openssl 1.0.2k

We have to find a way to decrypt files produced in an older server using openssl version 1.0.2k in a upgraded server using openssl version 1.1.1c. We have several operational servers still using ...
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0answers
48 views

Passing the paraphrase as an option to encrypt/decrypt command in solaris

Can we pass the paraphrase as an option to the encrypt/decrypt command without being prompted for stdin? encrypt -a aes [-i input-file] [-o output-file]
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2answers
2k views

How do I crack a double encrypted Hash

I created a hash which is encrypted like this: $What_i_made=BCrypt(MD5(Plain Text Password)) and I wonder if it can be cracked. Currently, I thought of two ways: Brute force $What_i_made to get the ...
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2answers
2k views

decrypting EFS encrypted files on windows 10

I have encrypted a folder in my external hard disk consisting sub folders and my personal images and videos on my windows 10, i have no knowledge of taking a backup of key or certificate and formatted ...
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1answer
8k views

How to decrypt video using FFmpeg?

I've managed to encrypt my video files using the ffmpeg command below; however, I can't find a way to save the decrypted output. ffmpeg -i {file} -encryption_scheme cenc-aes-ctr -encryption_key {key} ...
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0answers
103 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 ...
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1answer
875 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-...
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27 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 ...
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0answers
247 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 =...
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1answer
251 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 ...
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0answers
32 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 ...
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1answer
3k 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? ...
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1answer
699 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?
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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 ...
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0answers
334 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....
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2answers
252 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 ...
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1answer
1k 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 ...
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0answers
292 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 ...
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1answer
176 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 ....
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1answer
678 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 ...
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0answers
249 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: ...
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0answers
472 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 ...
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1answer
29k views

How can I encrypt / decrypt AES-256 CBC with OpenSSL?

I just installed Linux (Ubuntu) for the first time and downloaded package OpenSSL as well. Opened command line too and tried some commands but none of them worked. So what I have is initial vector: ...
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1answer
1k 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....
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1answer
153 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 (...
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1answer
212 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 ...