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

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199
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1answer
24k 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 ...
16
votes
6answers
14k views

How do I decrypt a password-protected PDF on OSX?

I have a PDF that requires a password to view. I know what the password is. I frequently open this PDF to print it, and find entering the password each time incredibly annoying. How can I remove the ...
13
votes
4answers
17k views

Wireshark WPA 4-way handshake

From this wiki page: WPA and WPA2 use keys derived from an EAPOL handshake to encrypt traffic. Unless all four handshake packets are present for the session you're trying to decrypt, Wireshark won'...
7
votes
4answers
1k views

Moving from Ubuntu, worried about being able to access my (encrypted) data

I've decided to go back to Fedora after being on Ubuntu for a while. Thankfully I have just done the upgrade to 11.04 so the warning it gave me about it encrypting some things was fresh in my mind, ...
5
votes
2answers
2k views

If I compress a file in a .7z archive with password, is it undecryptable without password?

I'm just curious to know whether or not an encrypted file is really save in terms of decrypting if I compress (or just save) a file into a .7z archive with a password. If I use a strong and ...
5
votes
1answer
9k 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 ...
4
votes
1answer
20k views

Decrypt PGP file using ASC key

I installed the command line version of pgp and I received a .pgp file and its key in a .asc file. How can I decrypt the pgp file using command line and the asc key?
4
votes
3answers
9k views

How to decrypt Windows 7 encrypted files

I have a flash drive and on this flash drive I have a folder. In Windows explorer, I right clicked on the folder and went to properties. I then clicked the advanced button and there is a check box ...
3
votes
4answers
193 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 ...
3
votes
1answer
353 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
3answers
628 views

Keyfile worries

I would like to use key-files for KeePass and/or TrueCrypt; however I have some worries here. How does keyfile decryption work? Does it work by running a file through and getting a hash? Or does the ...
2
votes
2answers
240 views

decryption of files

i formatted my C drive,reinstalled a new version of win xp.i had some encrypted files in my E drive.now i have the user name and certificate thumbprint in my encrypted files.but i cant open them.how ...
2
votes
5answers
5k 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 ...
2
votes
1answer
7k 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 ...
1
vote
2answers
38k views

How to play an encrypted AVI file [duplicate]

Possible Duplicate: Encryption of a movie file. I have downloaded a movie form a torrent, which is in an AVI file (file size 1.3 GB) format. I used VLC to open the file, but it didn't ...
1
vote
1answer
50 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 ...
1
vote
1answer
225 views

Using GnuPG or ccrypt to encrypt files?

When I encrypt some files (e.g. a folder or a tar-archive) whould you prefere gpg or ccrypt?
1
vote
1answer
5k views

How to decrypt files encrypted with Crypto Defense, I have the key(s)

I have a client who is a victim of the Crypto Defense randomware virus. Thankfully I was able to find the keys but the thing is I have no idea HOW to use those keys to decrypt their files. So... How ...
1
vote
1answer
2k 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?
1
vote
0answers
118 views

How to decrypt single file or folder?

In the proces of encrypting the whole drive, an error occured and my drive was broken. I've managed to recover all files. However, some of them were still encrypted. I've tried using TrueCrypt, but ...
1
vote
0answers
39 views

OpenSSL listen and decrypt automatically

I want to design an application to connect my server using OpenSSL and send encrypted data (encrypted with server public key) to specified port on server like 4433. All client using server public key ...
1
vote
1answer
2k views

Retrieve/decrypt Windows 7 product key from Linux

I accidentally disconnected my hard drive while it was still running and corrupted my Windows 7 installation; I am now completely unable to boot into Windows. I have tried everything to try and repair ...
1
vote
0answers
140 views

Auto-Decrypt Windows Boot Drive With Truecrypt

Can I auto-decrypt an encrypted Windows 7 boot drive with Truecrypt? Basically, I want to be able to plug a USB flash drive in and have Truecrypt automatically decrypt and boot the Windows drive with ...
1
vote
1answer
401 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
vote
2answers
1k views

unable to decrypt certain files with secret key pgp 6.5.8, any advice?

Ok so I do some stuff for a client of ours that requires me to decrypt some of their suppliers messages, the thing is, something weird happened the other day and I can only decrypt some files with an ...
0
votes
5answers
10k views

Is it possible to decrypt MD5 Hashing? [closed]

I was seeing a video on how to hash passwords with MD5 Hashing. After googling on it I found out that Facebook also uses MD5 hashing scheme. Now I was curious to know if we can decrypt the password ...
0
votes
1answer
650 views

Why must a machine be decrypted from PGP before it can be reimaged? Or have I been misinformed?

At work we had to re-image several laptops which all had PGP encryption on them. Why is it necessary to decrypt the disk before remaining (using Clonezilla)? Doesn't it just overwrite the entire hard ...
0
votes
3answers
262 views

how to encrypt an entire folder and continue moving plain files to the folder?

We have a folder on our server where daily files comes in from a remote machine. Everyday we check if the files came in and if so - we download them to our local machine. There are around 20 daily ...
0
votes
1answer
1k views

rar & zip password recovery [duplicate]

Possible Duplicate: ZIP password recovery I have rar & zip files that I made a year ago and I don't remember the password. Is there a way to recover it?
0
votes
1answer
2k views

How Do I Install Outguess Steganography Command on OS X?

My daughter is leaving for a risky foreign country next week, and the country has some limited Internet censors there. I want to provide a way for her to send me secret steganography messages in any ...
0
votes
1answer
22 views

OS X Mavericks doesn't start decryption after password entered

I'm having some issues with my MacBook Pro. Last week I found the computer with a gray background with a folder symbol with a question mark in the middle. I couldn't do anything with the computer so I ...
0
votes
1answer
2k 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
2answers
1k 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
1answer
711 views

Decrypt file that was encrypted using a public key created from PuttyGen

I have a file that our customer encrypted using our public key. I know how to decrypt it using our ppk file programmatically, but I am unsure of how to do this from the command line, or using PuTTYGen ...
0
votes
1answer
952 views

Will all the files become corrupted inside TrueCrypt?

If I had 15 files in a TrueCrypt Container/Volume and then suppose if the encrypted volume becomes corrupted at some position in container file. Does it mean the volume cannot be decrypted anymore to ...
0
votes
3answers
624 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
0answers
27 views

How to remove Excel password (I know the password) WITHOUT Excel?

Spent about a few hours scouring the net for an answer, but nothing so far has worked. I've tried DOCRECRYPT with absolutely no success, the certificate side of things are broken and there is no fix ...
0
votes
1answer
46 views

Need help decrypting a Windows 7 system drive with Diskcryptor

I've had my Windows 7 64-bit Professional system drive fully encrypted with Diskcryptor, and now I'm trying to unencrypt it so that I can install several new operating systems. I used DiskCryptor to ...
0
votes
0answers
16 views

How can I decoded Linksys WRP400 configuration file?

I've lost my VoIP provider password, so I want to recover it from my router configuration setting. Now I've done backup configuration file but I don't know encrypted method for this file. Does ...
0
votes
0answers
56 views

How to decrypt an individual file from a BitLocker encrypted usb

I have a USB drive that I recently encrypted using BitLocker On-the-go, I accidentally deleted a file on it that I needed and so I used recuva to restore the files. The files were in perfect condition ...
0
votes
0answers
87 views

Decrypting Diskcryptor partition on another machine

Encrypted my partition containing my windows installation and also made a boot partition. On reboot, the system wasn't able to boot into windows and didn't even display the password prompt even though ...
0
votes
0answers
659 views

I've upgraded to Windows 10 Home, how can I decrypt my drivers from BitLocker?

Since Windows 10 Home doesn't have BitLocker support (you can unlock drives though), I've decided to use different software. That said, I need to decrypt my BitLocker-encrypted drives. How can I do ...
0
votes
1answer
545 views

Bitlocker decryption interruption - this disk has one or more errors

I was busy decrypting a drive when there was a power failure. After the power was restored, I was happy to see that the decryption process continued once I turned on the PC. It was short lived, as the ...
0
votes
0answers
97 views

Truecrypt: Can't decrypt non-system partition after decrypting system partition

I have a very strange problem and couldn't find help anywhere, so here it goes: I have one hard drive with two partitions (C and D) for Windows and everything else, both completely encrypted with ...
0
votes
1answer
125 views

External hard drive making noise; Can I eject drive during CHKDSK operation?

Whenever I connect external HDD to my laptop. It shows decryption error and suggest to run chkdsk /r. So this time I did so as per this suggestion. It's taking a lot of time. What happens if I eject ...
0
votes
1answer
174 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
1answer
455 views

wireshark monitor mode, decrypting capture

I have a network, which has 2 nodes (a phone, a MacBook) both are connected to same wireless network, I know the SSID and password for the wireless network password: mypassword ssid: myssid security: ...
0
votes
3answers
1k views

TrueCrypt Failing to Decrypt External Hard Drive after changing Enclosures

I have a 4TB external hard drive that was previously encrypted using TrueCrypt. The power source on the hard drive enclosure failed, so I had to switch the hard drive itself into a new enclosure. I ...
0
votes
0answers
60 views

Can't view encrypted files in linux

I am working with 2 linus os disks on different drives. I boot from the other and am mounting the LXDE drive that has my encrytped files. I did the command line file recovery and all seems to go well ...
0
votes
0answers
1k views

Word 2013: how to decrypt a password protected docx?

I have a word 2013 docx-file with password protection, but forgot the password. This way I can't open the file. Because the content is important to me I'm asking if there is a way to open the file / ...