The process of converting encrypted content (ciphertext) into its original, readable form (plaintext).
Questions tagged [decryption]
135 questions
201
votes
1 answer
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 completely restore my disk. I am not going to pay.
leostone
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53
votes
7 answers
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 password from the PDF?
Since I need to print it,…
Brant Bobby
- 2,576
24
votes
6 answers
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 the installation: Windows Startup Repair, chkdsk…
sundiata
- 241
16
votes
3 answers
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 typing this:
X:\>manage-bde -off C:
The output…
16
votes
1 answer
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.
RichMo
- 161
14
votes
1 answer
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?
jdsushi
14
votes
4 answers
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't be able to decrypt the traffic. You can use the…
cYrus
- 22,335
14
votes
2 answers
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 use vim, enter the password and then exit using :q…
11
votes
1 answer
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: 5a04ec902686fb05a6b7a338b6e07760, also have…
eyesima
- 213
8
votes
1 answer
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? What will happen if there is a power failure…
Bob
7
votes
4 answers
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, but now has me worried that I won't be able to…
tjm
- 179
6
votes
1 answer
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?
buhtz
- 349
5
votes
1 answer
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 overriden - fine, i restored it from that same…
avs099
- 277
5
votes
2 answers
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 unpredictable password, is the only way to decrypt it a…
pimvdb
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5
votes
3 answers
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 MD5 Hash then do a dictionary attack on the MD5…
SmartOinker
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