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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How to recover Windows 7's encrytion certificate (EFS) from formatted partitions?

I am a home user of Windows 7 ultimate. I am just a local admin for my computer. A standalone system. I am quite noob about computers. I formatted, Windows 7 installed(size 200gb) partition of 1tb ...
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1answer
14 views

Show the encryption method used on a Zip file in Linux?

I’d like to see what encryption method was used on a Zip file on Linux. How can I do this? See the following posts for reference: This question which shows the need to verify the encryption: 7-zip ...
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3answers
182 views

How to encrypt all—or part—of a USB hard drive that can be accessed by both Linux and Mac OS X?

I bought a new USB Hard Drive that I want to use as a back up for my Linux (Ubuntu 14.04 LTS at the moment) and my Mac Mini (running Mac OS X 10.9). I can do this perfectly at the moment, but I want ...
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2answers
27 views

Is it possible to re-install an operating system over an encrypted system?

Scenario: I buy old PC/laptops, fix it and then resell them. I recently got a laptop at an auction with the whole system password encrypted McAfee Endpoint Encryption. Windows does not even load. I ...
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0answers
8 views

How do I decrypt seczip AES256-encrypted files using 7-Zip?

Using 7za on SLES 11, how do I decrypt AES256 files? I have created these files on a mainframe using “seczip” with password protection and AES256 encryption. I want to decrypt them on an SLES 11 ...
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0answers
19 views

Why does KeePassX auto-type not work for Enigmail passphrase prompts?

Whenever encrypting/decrypting an email using the Enigmail extension for Thunderbird, the "Enter Passphase" popup doesn't allow switching windows or workspaces. Because my password is in KeePassX, I ...
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1answer
5k views

Windows Bitlocker and automatic unlock password storage safety

I've encrypted my external HDD with a Bitlocker and after rebooting computer I tried to open that drive and got this message: Say, if I pick to "Automatically unlock on this computer from now on", ...
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1answer
45 views

How do you crack an encrypted fat file system [on hold]

I wiped a disk and then created an encrypted fat files system. How do I use open source tools to recover the passphrase to decrypt the filesystem?
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0answers
15 views

Encrypt single files easily [duplicate]

Right now I am using truecrypt to share files over dropbox but having the set container size is very annoying because dropbox has a limit to storage. I am looking for a way to encrypt individual files ...
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2answers
31 views

Is it possible to decrypt files which were encrypted by gpg with a very strong password?

I have encrypted my important files by gpg with a 32-length password, includeing upper-case characters, numbers and some special characters. I have stored them online so they can be download by ...
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0answers
43 views
+50

Thunderbird GnuPG + Enigmail: encryption command failed

Yesterday Thunderbird complained that I used GnuPG 1.x and the next update of TB would not work with this version. So I upgraded my Mac (OSX 10.10 Yosemite) to GnuPG 2. Now I see that TB has a new ...
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2answers
20k views

How secure are password-protected zip files?

In modern zip utilities like 7zip, you can specify a password when creating a .ZIP file. But, how secure is this? What encryption algorithm(s) are used to secure password-protected zip files?
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0answers
10 views

Truecrypt - cannot resume encryption?

I started encrypting a 'non-system partition' and deferred it. I later initiated "create volume" a second time and encrypted a different drive. But now I am forced to format the previous drive and ...
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2answers
2k views

Is there an rsync alternative, that stores compressed and encrypted?

I'm looking for a suitable off-site backup / file synchronization solution. Both local client and remote server run linux. Storage space on the server is limited, bandwidth between client and server ...
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2answers
195 views

Encrypting %userprofile% using EFS?

Is it safe to encrypt my Windows 7 %userprofile% folder using EFS ? i.e. are applications or system logon going to be affected?
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4answers
46 views

GPG public key created with GnuPG is rejected by MS Outlook 2010, why?

I created a GPG keypair with GnuPG on the CentOS 7 command line and I have exported the public key into a .asc file and successfully used that public key to encrypt emails sent from another email ...
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1answer
402 views

I/O Device Error while trying to Turn On BitLocker

I'm trying to turn on BitLocker on a 1TB drive in an MSI GS70 laptop running Windows 8 Pro. As soon as I click "Turn On BitLocker", the first step of the wizard shows the following error: The ...
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19answers
18k views

How can clients easily and securely send me passwords?

I often need to get passwords from clients for FTP, SSH, MySQL, Authorize.net, etc. What's an easy way for them to send me passwords securely? Maybe even without them needing a login/password? ...
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2answers
1k views

SSH-client on windows that supports ECDSA

I'm looking for a ssh-client on windows that supports ecdsa. There is a whish for putty, but no support yet. Winscp is waiting for putty to implement it. It seems to me that there is no client that ...
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0answers
11 views

GRUB2 + encrypt. /boot: Load cryptkey from usb

Grub2 allows to encrypt the boot device with LUKS. Booting the system, it shows a prompt for entering the passphrase. In my case, the passphrase should be secure, so it is very long. Is it possible - ...
8
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2answers
9k views

Is Gtalk communication encrypted?

What is the level of security offered by gtalk against eaves-dropping?
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0answers
16 views

Is it possible to encrypt full volumes post-boot?

I have a triple boot system with Windows 7 Ultimate, Kali Linux, and Ubuntu Linux. My bootloader is Grub2. Initially, I wanted full disk encryption covering all three installations but I've found that ...
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2answers
2k views

7-zip command line -p switch not working according to help page

I want to be able to automate the encryption of the file type .pcapng in a windows batch script. My current problem is that I get an error when extracting the encrypted file saying something along the ...
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0answers
6 views

Properly setting up gpg4win to use Comod Email Certificate

I am looking to properly setup and import an email certificate from Comodo to use with GPG on Windows (gpg4win). I obtained my email certificate from Comodo, and successfully imported it into ...
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0answers
17 views

What kind of router specs do I need to run OpenVPN at full throttle?

I just updated my router firmware to the latest version of DD-WRT and configured OpenVPN for Private Internet Access. My download speeds dropped from 50 Mbps to about 6.5. I get pretty close to max ...
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1answer
36 views

Bitlocker and Dropbox

Im looking to enable bitlocker on my laptop. I Use my laptop for work and I have it connected to a company shared dropbox folder. As there is sensitive data in this dropbox older, Id like to enable ...
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1answer
304 views

Can Windows damage a mounted TrueCrypt drive on shutdown?

I have Windows 7, and I have one encrypted TrueCrypt drive which is auto mounted on Windows logon with a script. But on Windows shutdown I don't use a script to dismount the drive before shutting ...
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1answer
26 views

is there a gzip like tool with password protection for windows? [closed]

I want to encrypt some text files on a server that could be unencrypted on the fly when needed for searches (I would use it with cygwin). I was thinking of something like gzip and gunzip type of a a ...
0
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1answer
17 views

Apple Time Capsule as encrypted cross-plattform NAS

I would like to use my Apple Time Capsule as an encrypted NAS and the encryption system has to be supported on Linux, MacOsX and optionally Windows. It is important, that the encrypted file system can ...
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1answer
28 views

Seagate Expansion Drive problems

i was encrypting a 3.5TB Seagate Expansion Drive with diskcryptor, it didnt crash or anything and i confirmed many times the data is still there even tho the encryption is paused at 65% . Now the ...
4
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1answer
46 views

What exactly happens when you use SSH without generating a key pair?

This seems far too simple and I feel like I might have missed something glaringly obvious, but what is actually happening when you use SSH without generating a key pair? A variant on this question ...
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1answer
25 views

BitLocker protected VHD volume corrupted

Due to all the security hype about TrueCrypt I decided to try out VHD + BitLocker to create encrypted containers. This test went OK for a few days. I used this drive just yesterday with no issues. ...
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31 views

Sync with remote encrypted storage

I'm trying to keep a folder tree in sync between several computers. Currently, I'm using unison in a star topology, with a central remote server. I want the data on the server to be encrypted, so on ...
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9 views

Can Enigmail automatically not encrypt email for multiple recipients?

I have Enigmail/Thunderbird set up to automatically encrypt email when I send it to a particular recipient. I have it choosing my keys "By Per-Recipient Rules" and "By Email Addresses according to the ...
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1answer
38 views

Set up gpg to decrypt own local files without supplying passphrase

This is a question about gpg. When I log into a linux system as a particular user ("opsacc"), I can encrypt a file using gpg. I can then decrypt the file without supplying a passphrase. The gpg ...
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0answers
13 views

Does boxcryptor keep unencrypted copies of files on the hard drive?

I encrypted some of my OneDrive folders with boxcryptor. Now when I open boxcryptor virtual drive I can see those files without the .bc extension, apparently unencrypted, and when I look at those same ...
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0answers
15 views

Why does the http/2 specification not compress payload?

I have been recently reading up about the http/2 specification and the changes this specification is focused on? While I am trying under this my self from available material. I have 2 question that ...
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3answers
2k views

Thunderbird: SSL/TLS vs. STARTTLS

Following up this question on serverfault "Is STARTTLS more safe than TLS/SSL?" it came up that the question is rather a question about Thunderbird and not about the actual protocols. Also, if you ...
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0answers
28 views

Remove SSD encryption from Windows 8.1

I have a Lenovo ThinkPad Edge E530 laptop with a Samsung Evo 840 SSD encrypted using the ata password (aka Class 0 in Samsung Magician). The laptop's screen is dead and connecting an external ...
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1answer
22 views

S/MIME with GMail in Browser

So I have a S/MIME Certificate at StartSSL now. I can now use it in my Thunderbird on Ubuntu and Windows 7. But how can I configure my Browser(Chrome) to use my certificate(which is already imported ...
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1answer
60 views

How to encrypt Google Drive on local machine

I'm a Google Apps customer and one of the things I'm using is the Google drive service to sync my files from my work PC to my home. This works fantastic but I have a concern about theft of the machine ...
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4answers
10k views

How to do rsync-like encrypted backup?

I want to save a backup of my data on a remote server, but never want the backup server to see the data unencrypted. Editing a single file and backing up should not result in everything being ...
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0answers
36 views

Why is password incorrect after some time? Encrypted 3TB drive with GPT partition,

A few months ago I purchased 3TB drive by Seagate and then decided to encrypt with TC. I did not want to have 2 partitions so I made on GPT partition. Encryption went smoothly since the drive was ...
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1answer
20 views

GPG 2 decrypt from STDIN via pasting inconsistency

Does anyone know why in some cases you can do this: gpg2 -d And paste your GPG message into the terminal, type ctrl+D, get prompted for your passphrase and get the results to STDOUT? But in other ...
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0answers
51 views

How do I decrypt a file with Symantec Endpoint Encryption with an XML extension?

I've created a C# Winforms app and published it as an EXE file. I copied it to my DVD-RW drive, which requires setting a Symantec Endpoint Encryption password. OK. Password set. On the DVD drive, it ...
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0answers
20 views

Encrypt file with password from Gpg4Win Context Menu?

I have a list of usernames and passwords sitting on my desktop for work related stuff. I'd like to encrypt it under a master password. I believe this is called the String-to-Key (S2K) Specifiers (but ...
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0answers
16 views

3DES_CMAC encryption using online tools or OpenSSL

I have a smart card that claims that its mutual authentication is based on 3DES_CMAC algorithm. In the first step, the user sends a random number to the card and the card calculate the encrypted ...
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1answer
2k views

How to recover TrueCrypt partition deleted with Windows Disk Manager

I got a whole HDD encrypted with TrueCrypt (one partition, non-system disk). I have deleted this partition by coincidence with windows 7 disk manager. Now, I can't mount the TrueCrypt disk (saying ...
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0answers
117 views

Macbook filevault paused

So during the setup of my mac I have checked the FileVault box, and now it isn't finishing. When the macbook is not connected to the chargers it asks me to do so. When I connect the mac the Filevault ...
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0answers
12 views

How do I import a pfk file into MS Outlook 2010?

What specific steps can I take to successfully import a .pfk file into MS Outlook 2010 and then use it to successfully send encrypted/signed messages/attachments to the email address associated with ...