Disk encryption is a special case of data at rest protection when the storage media is a sector-addressable device (e.g., a hard disk).

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Is it possible to share BitLocker decryption keys between multiple TPMs?

The TPM specification mentions that some keys are migratable, i.e. transferable to another TPM. Does this mean that it would be possible to share (transfer) a BitLocker decryption key between several ...
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2answers
3k 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 ...
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2answers
1k views

How to encrypt data on the server?

I have some data on the server (running Linux) which needs to be encrypted (company policy). This data is being served by an application running on this machine. Now I consider a few possibilities: ...
3
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1answer
533 views

Recognizing PGP-encrypted disks

I am studying various disk encryption schemes (such as PGP, MS Bit Locker, BestCrypt and TrueCrypt) on my Windows OS. I am interested to know how an encrypted partition/disk/file with a particular ...
6
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2answers
322 views

Full-disk encryption and theft mitigation?

Is it possible to combine the security of full-disk encryption (e.g. Truecrypt) with the honeypot-like performance of anti-theft tools (e.g. Prey)? In other words, is it feasible to have both strong ...
3
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1answer
225 views

Remote System Administration of an Encryption-Switch-Encrypted Infrastructure

I can't seem to find a decent explanation anywhere of the practicalities of remote system administration (e.g. SSH) of an encryption-switch-encrypted SAN-stored infrastructure. The environment will ...
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1answer
654 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 ...
4
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1answer
225 views

Accessing hidden partitons

I have two disks. They're both bootable and run Linux. When I physically mount the disks, I can see scsi devices get added. /dev/sdb and /dev/sdc. However the partitions are not detected. I can't see ...
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5answers
485 views

Should a full disk encrypted hard drive on a live system be considered encryption at rest?

If you are specifying requirements that a certain classification of data be encrypted while at rest (on storage), should the requirement be considered met if the data is stored on an live (turned on) ...
3
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2answers
303 views

Is it safe to suspend my computer if I'm using encrypted hard drive?

I'm using disk encryption to protect my data and sensitive information - but only one partition. I used to suspend my computer instead of shutting it down because of very fast resume and very low ...
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1answer
214 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) ...
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1answer
746 views

SSD enrcyption with ATA password - AHCI mode?

I have seen articles advising that in order to make the most of an SSD, it should be connected in AHCI mode. Some SSDs allow the ATA password to encrypt the encryption key so my question is this - ...
3
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2answers
220 views

Remedy for not having filled the disk with random data?

Filling a large HDD with /dev/urandom prior to encryption can be extremely slow (even with netcat, multiple instances in parallel, etc) and for this reason I'm sure a lot of users skip this advice ...
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1answer
181 views

Is this a security risk for us to lost TPM or others to access to reset BIOS ?

In the previous post Physically secure the system case it is recommended to physically protect the system. But in case stolen laptops where intruder have physical access to TPMs. What are the security ...
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2answers
2k views

SSD Encryption - Difference between models

I understand that most SSDs which support encryption usually encrypt all data, but that only some actually encrypt the encryption key with a user BIOS password. This means that the models which don't ...
3
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1answer
2k views

Full Disk Encryption within a VM, how secure is it?

Just a quick query on basically how to secure a VM for a home computer for a number of uses (such as securing work related data in a good enough fashion whilst in its native environment). I'm not ...
3
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3answers
2k views

Securing my USB flash drive with Truecrypt and FreeOTFE

I want to know if I encrypt my flash with Truecrypt "Encrypt a non-system partition/drive" option and then mount it and then make a container with FreeOTFE on the Truecrypt encrypted drive and then ...
2
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1answer
457 views

Is Dual Factor possible during boot with whole disk encryption on Mac FileVault 2

Mac FileVault 2 is the default disk encryption for newer Macs that occurs in the EFI pre-boot phase. The challenge here is that most smartcard drivers are loaded after the OS loads. Is anyone aware ...
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1answer
1k views

Another method to erase hard drives securely? [duplicate]

Possible Duplicate: Use truecrypt to make data unrecoverable The other day I was thinking, and I looked up this question because I was pretty sure a question similar to this had been asked. ...
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1answer
103 views

Determing and deciphering an encrypted drive (knowing the password)

I have a Western Digital external drive (my passport essential 500GB), which comes with a little software that allows you to encrypt your data (which I did sometime ago). Unfortunately, this software ...
3
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2answers
693 views

Possible implementations of networked+encrypted filesystem

Is it possible to implement scheme where remote server just share its filesystem (or resizable container file in it) and it's locally encrypted and mounted? And what is best practical method? (On ...
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7answers
1k views

Encrypt Virtual Machine in the cloud

I am no expert when it comes to security in virtualized environments. However a problem I always saw is: What happens if the host OS gets hacked and an attacker gains administrative privileges? How ...
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1answer
794 views

Can a Bitlocker To Go user pin be brute forced?

I have a external hard disk and protected a partition on it with Bitlocker To Go. I printed the recovery code but I lost it. I can't remember the user PIN either. If I could only know the first ...
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1answer
439 views

Does setting a firmware password add security if FileVault 2 is enabled?

On an up-to-date OS X computer with FileVault 2 (whole-disk encryption, minus the recovery partition), is any security gained by setting a firmware password, as well?
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2answers
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What does HP DriveLock do to your password?

While looking at various hard drive encryption methods, I discovered that HP's "DriveLock" is not quite the standard ATA security system. While I did get confirmation from HP that it does indeed use ...
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6answers
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How secure is FileVault 2 while the computer is in sleep mode?

How secure is Apples disk encryption FileVault 2 when someone has physical or network access while the computer in sleep mode or is running a screen saver? Are there ways to circumvent FileVault 2 ...
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2answers
543 views

Detect changes in /boot when using full disk encryption

When running a fully encrypted linux system using dm-crypt, the /boot partition has to be unencrypted to boot, as far as I know. I've setup a server that can be unlocked remotely by connecting to a ...
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1answer
308 views

How does disk encryption mounting work with large disk and low RAM?

For example with Truecrypt or bitlocker, when my hard disk contains 500 GB encrypted data and 256 MB Free RAM, how is the data decrypted/disk mounted when I turn on my computer? If the entire disk is ...
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1answer
416 views

Is using decrypt_derived more secure than a keyfile?

Say I have two partitions on a Linux system, a root partition (/) and a /home partition. Both of them are encrypted with LUKS. The /home partition needs only to be decrypted if / is unlocked and ...
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1answer
602 views

Reasonable (BruteForce) Attempts/Second Estimate?

I've read various articles on password strength and passwords vs pass phrases (including the one from XKCD and its thread here), but most of those articles seem to be focused on online passwords, and ...
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4answers
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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. ...
6
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2answers
3k 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 ...
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7answers
5k views

Physical computer security, how to disable USB ports when the computer is 'locked'?

Lets say my PC & server is in an environment where a theoretical attacker has physical access to the machine while I'm not there. Now the data is encrypted on the hard drive with TrueCrypt. ...
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2answers
447 views

In TrueCrypt Hidden / Normal overriding?

If I have a normal TrueCrypt volume, and I want to create a Hidden volume inside of it, how do I stop the 2 from overriding each other? Or do I just have to manually make sure the inner volume does ...
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3answers
415 views

Erasing a hard-disk, encrypting it as alternative?

I was pondering about this, sometimes people ask me to erase data on their drive. So I use a shredding program, which takes a long time. However what if instead of shredding all the files, I'd just ...
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4answers
3k 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 ...
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2answers
268 views

Securing data on laptop's hdd

I was wondering which is the best way to secure/encrypt data in the hard disk on a laptop that runs Ubuntu Oneiric? Setting LVM encryption? I am mostly concerned about having my laptop lost or what ...
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1answer
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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 ...
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2answers
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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 _). ...
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2answers
247 views

Advice on buying an encrypted disk

How do I find an encrypted disk to buy? What factors should I be aware of in selecting one? Is there any proof that buying one likely to draw any attention? How do I know there's not a backdoor? ...
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4answers
352 views

How do you guarantee that you don't lose a keyfile?

I am toying with the idea of adding keyfiles to various things that I encrypt. However what's been keeping me from adopting them is guaranteeing that I don't lose the keyfile while still keeping ...
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4answers
840 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
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2answers
807 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 ...
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2answers
307 views

What does “if the Crypto Officer performs this operation” mean in this BitLocker security policy?

In the document Windows Server 2008 R2 BitLockerâ„¢ 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: BitLockerâ„¢ will ...
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2answers
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Is BitLocker on a virtual machine still FIPS 140-2 compliant?

BitLocker can be used as a cryptographic module to fulfill FIPS 140-2 security level 1 compliance. In a common setup, USB thumb drives can be used to unlock drives encrypted by BitLocker on startup. ...
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7answers
61k views

Are there actually any advantages to Android full-disk encryption?

So, since Android 3, devices can perform boot-time, on-the-fly encryption/decryption of the application storage area (NOT the SDcard/removable storage) - essentially full-disk encryption. This ...
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3answers
1k 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 ...
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1answer
4k views

Is it possible to auto mount entire truecrypt drive

Truecrypt can easily automount if your drive is not entirely encrypted and your data is a standard file. However I have my entire removable storage encrypted and so to the OS, it is seen as an ...
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3answers
426 views

Encrypting an email server's local drives or filesystems

Planning to deploy a remote hosted mailer (Zimbra based) I need to make sure the local data on the machine is encrypted. Currently, the plan is to use the built in LUKS to encrypt /opt/zimbra and ...
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1answer
3k views

loop-aes or dm-crypt for linux hard encryption?

loop-aes and dm-crypt are both used by partman-crypto for linux hard encryption, but dm-crypt needs no patch to kernel and is more supported. dm-crypt keeps it's key on first hard block, is it a ...