Tagged Questions
-5
votes
2answers
73 views
Is it possible to encrypt a virtual machine using virtualbox? [closed]
Is it possible to encrypt a virtual machine using virtualbox, and not leave accessible to the users of the machine where it hosted, and not allow any file to be extracted it with some program ?
The ...
1
vote
1answer
103 views
Is there a way to encrypt an existing ext4 filesystem with already data on it? [duplicate]
I have a big drive with already data on it, that I would like to encrypt (ext4).
Is there a way to encrypt that disk without having to move the data to another drive first?
Or maybe, this would be ...
1
vote
1answer
129 views
Dual Linux System with Whole Disk Encryption
(This is a continuation of my question on Ask Ubuntu.)
My goal is I want to have a Xubuntu/Ubuntu dual boot, with a catch - I want the disk to be fully encrypted with the dm-crypt (native supplied) ...
11
votes
2answers
5k views
Multi-boot with full hard drive encryption and pre-boot authentication
How would I set up a multiboot system which supports full hard drive encryption and pre-boot authentication.
I have a system with Ubuntu, Windows 7, Windows XP, and I would like to install Red Hat. ...
4
votes
2answers
2k views
Full disk encryption and multi-factor authentication
All serious full disk encryption schemes I have looked into use a static password for authentication. For example, TrueCrypt supports two-factor authentication with keyfiles, but not for system ...
3
votes
3answers
1k views
TrueCrypt -vs- MacOS encrypted sparse image - equally secure? Other alternatives?
I'm currently trying to find my personal best solution for storing passwords and other sensible data. Recently I've used 1Password on iPhone and Mac but I'm not really satisfied with its predefined ...
5
votes
1answer
852 views
Device versus file based encryption in TrueCrypt for a flash drive?
Are there security tradeoffs to be considered in deciding between encrypting an entire flashdrive with TrueCrypt versus storing a file encrypted container? The security goal is to be immune to the ...
4
votes
2answers
2k views
How expensive is it to guess a 15 character password, and should I be worried?
I'm currently using AES encryption (at home) on GNU/Linux (one of LUKS AES-256 variants with xts) and on Windows 7 (Truecrypt) with a 15 characters password (alphanumeric lowercase only plus _).
...
4
votes
4answers
443 views
Are backups of truecrypt volumes with different pass phrases a security risk?
Lets say that I periodically change the pass-phrase on a truecrypt volume. The volume is regularly backed up, so my backup system has many copies of that volume, many of which have a different volume ...
4
votes
2answers
501 views
What cryptographic module does Sql Server 2008 use to run in Fips 140-2 compliant mode by default?
One can configure Sql Server 2008 to run in FIPS 140-2 compliant mode, in the same manner as running Bitlocker in FIPS 140-2 compliant mode. Which is to activate FIPS 140-2 compliant mode in the ...
2
votes
2answers
168 views
What does “if the Crypto Officer performs this operation” mean in this BitLocker security policy?
In the document Windows Server 2008 R2 BitLocker™ Drive Encryption Security Policy For FIPS 140-2 Validation, in the section 6.1.2 FIPS 140-2 Security Rules bullet point 2 it says:
BitLocker™ will ...
0
votes
3answers
694 views
Why do some LUKS tutorials mention overwriting the partition with random data?
On a lot of tutorials on luks encryption, people say to override the partition with random data, so that data is not recoverable after encryption. I don't understand that. Will the random data be ...
5
votes
3answers
910 views
Is it possible to infer that a hidden truecrypt partition is likely to be present
Truecrypt contains a feature that let's you create a hidden volume. It's said that it can't be proven if a hidden volume exists. However, is it possible to infer from the state of the data on the ...
4
votes
2answers
627 views
Have anyone tried to extract the encryption key from a SSD?
After reading this forum thread it does not sound like encrypted SSDs provide much protection at all - specifically encryption only occurs between the controller chipset and the NAND storage.
Why is ...
8
votes
5answers
5k views
How secure is NTFS encryption?
How secure is the data in a encrypted NTFS folder on Windows (XP, 7)?
(The encryption option under file|folder -> properties -> advanced -> encrypt.)
If the user uses a decent password, can this ...
4
votes
6answers
672 views
Is there any asymmetrically encrypted file system?
Is there a file system providing a directory where everybody can write, but only the directory owner can read the files? In theory it could be done by encrypting using the public key while writing, ...
6
votes
2answers
563 views
Do Flash memory (SSD) architecture impacts encryption techniques?
I'm working on encryption techniques on SSD's and my question is: does the erase before write architecture of SSD's has anything to do with the encryption technique?
What are the problems I might ...
7
votes
2answers
1k views
For LUKS: The most preferable and safest cipher?
I'm about to encrypt two of my hard drives using LUKS, since I can't really do it myself I use the guide on the Arch Linux wiki (which can be found here). In an example in the guide the cipher ...
18
votes
6answers
893 views
What are the good use cases for disk encryption?
I've been researching disk/file system encryption, and on the surface it seems like a good idea for a lot of things. But as I dig further, the security it offers seems more mirage like than real.
...
6
votes
4answers
2k views
How effective is iPhone 3GS and 4 encryption?
My primary goal is to protect Activesync-based communication from being copied or stolen from an offline device.
In that context how effective is iPhone 3GS and 4 encryption?
4
votes
5answers
350 views
Encrypting a disk that has stuff on it?
Ok, so a pretty big disk ~1-2TB (90% full, multiple partitions + 2 operating systems on it), needs to be encrypted and zeroed-out, and it's a bit too much data for backing it all up before encryption. ...
