encoding information in a way so that it can only be decoded if a secret is known; used to prevent exposure of data to other parties

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2
votes
1answer
1k views

Encrypt files using gpg (and them symetric encrypting the key) - is it a normal thing to do in the *nix world?

I read a lot of articles about using gpg to encrypt email, but I would like to use it to encrypt some files - mainly a bunch of *.isos. I'm going to describe what I thought I would do, so you can ...
0
votes
2answers
1k views

Grub MD5 Crypt algorithm

How does Grub's MD5 algorithm work? When you run grub-md5-crypt and enter the same password each time you get different results. Generally md5 is supposed to always return the same hash, so why does ...
1
vote
0answers
159 views

Implementation of eSTREAM ciphers available?

Is there a usable implementation of the eSTREAM stream cyphers available for Linux? I was thinking to use that for encrypting data stored on tape drives, using it with tar. Now, there are some basic ...
4
votes
2answers
235 views

LUKS encryption for tape media?

I was wondering, if it was possible to use LUKS encryption with tape drives, QIC for instance. I'm using LUKS for USB drives and internal disks, even DVDs and CDROMs. But I was thinking of maybe ...
0
votes
2answers
622 views

Is MSN chat encrypted or not? If not how can I make it encrypted?

How can I force pidgin to use only encrypted connections when using MSN chat? I'm on Ubuntu 10.04
7
votes
4answers
2k views

Receive Pop/IMAP email and then forward as encrypted to gmail

Basically, I have an email account I can access as POP3 or IMAP. I want to take all incoming emails, encrypt them, and then forward the encrypted version to my gmail account (so I can see the ...
5
votes
1answer
659 views

How to use keyfiles,for ZFS whole disk encryption?

Does anyone have a working implementation using keyfiles, preferably on SD Card, instead of a prompt for ZFS? I know how to do this with linux LVM/LUKS. In my opinion the FreeBSD full disk ...
3
votes
1answer
3k views

How to check if my wireless connection uses AES or TKIP from a terminal?

I have a wireless router that has settings to use AES, TKIP or AES+TKIP encryption for wireless connections. My Linux-based device does not like AES (it drops out from time to time), my girlfriend's ...
4
votes
1answer
574 views

AES-NI not passed to guest in Virtualbox

I'm trying to use encryption inside a virtual machine. The problem is that the AES-NI doesn't seem to be passed to the guest virtual machine. I have Vt-x enabled. This is my host cpuinfo: processor ...
2
votes
1answer
430 views

How can I encrypt a device with loop-aes under Linux?

Using Fedora/Ubuntu, how can I do it?
1
vote
1answer
318 views

What encryption to use for good performance?

I will install Ubuntu 11.04 to an encrypted VolumeGroup with the installer: http://i.stack.imgur.com/Skil9.png AES Blowfish Serpent Which one is the fastest from these 3? Or Using AES with only a ...
0
votes
0answers
183 views

Is it possible to login via ssh to unlock LUKS drives? [duplicate]

Possible Duplicate: SSH to decrypt encrypted LVM during headless server boot? I have a large number of Ubuntu servers in co-location that I would like to use LUKS encrypted drives on. ...
0
votes
2answers
388 views

Is the VG encrypted with dm_crypt OR luks? How to find out?

A system is installed with an encrypted VG. How can I find out if they used dm_crypt or luks? It's running Fedora 14, so I think it's one of those. Or are they the same thing?
-1
votes
3answers
105 views

Does PGPDesktop supports OpenBSD or e.g. Fedora?

Does PGPDesktop support OpenBSD or e.g. Fedora, or can I only encrypt my whole hard drive when I use Windows?
4
votes
1answer
942 views

Use aes-ni in Debian

I am considering building a small home server. I'd like to encrypt some folders on this server, therefore using the instruction set aes-ni which is supported by newer (mostly Intel) chips would be ...
3
votes
3answers
757 views

slow media - disk cache tuning?

Is there any way to make the system more consistent when using LUKS? (or slow storage in general) as it is everything is snappy until the write buffer is full, then everything grinds to a halt as the ...
3
votes
1answer
1k views

Full disc encryption with GRUB2

Does anyone know of a good Howto on how to fully encrypt a HDD (even the /boot!) with GRUB2? Is it possible using fedora 14 or ubuntu 10.04?
4
votes
2answers
870 views

Migration from loop-aes to cryptsetup

I've upgraded my linux installation to kernel 2.6.38-2 (Debian testing). With the new kernel, loop-aes does not compile, so I cannot mount my encrypted volumes. I heared that it is possible to use ...
8
votes
1answer
328 views

Encrypted Booting

I want to boot the Linux from the /boot partition, and also want to encrypt this /boot partition. [ AFAIK, Grub is unable to find the kernel and initrd from an truecrypted partition or cryptsetup ...
1
vote
4answers
1k views

How to install Fedora&Ubuntu with encrypted VG's on one disk?

I installed Fedora 14 first, then Ubuntu 10.04. I installed them using dm_crypt/aes256/lvm, so I used encrypted VolumeGroups. At the end of the Ubuntu install it said it cannot install GRUB, so I had ...
2
votes
1answer
109 views

Is it safe to leave a enc folder mounted?

I was looking at this and ecryptfs seems cool. I'd like to use it on my server to encrypt git pushes. I dont want to ssh in everytime to mount/unmount the encrypted folder. However once in a while ...
2
votes
1answer
751 views

Does OpenBSD use bcrypt by default?

http://codahale.com/how-to-safely-store-a-password/ with what does OpenBSD store the password by default? They say bcrypt is way more secure then hashing. I googled' it and obsd supports bcrypt, but ...
11
votes
4answers
6k views

How should one set up full-disk encryption on OpenBSD?

Is there a preferred method to set up full-disk encryption under OpenBSD, similar to dm-crypt under Linux? I'm looking for full-disk encryption, as if someone were to steal my notebook they could ...
2
votes
1answer
532 views

How to make system automatically mount encrypted device in Linux

When I plug my external storage in , I need to automatically mount it as an encrypted device. How do I make this happen ?
3
votes
2answers
701 views

How to automatically encrypt, sign, and forward root's email?

I've recently been teaching myself about the BSDs and decided to pick up a NetBSD VPS. I don't always log in to this box every day (it's not actually doing anything that important), but I'd still like ...
3
votes
1answer
2k views

Automatically mount encrypted home folder on login

I'm looking into encrypting my home folder with Truecrypt, and mounting it after I've logged in, which should be pretty straightforward. However, it occurred to me that it should be theoretically ...
3
votes
2answers
2k views

Encode directory with GnuPG

Is there any way to encrypt the whole directory using gpg? It accepts only file as input argument. But I need to encrypt a lot of files on external HDD.
1
vote
1answer
924 views

USB Ubuntu with whole-disk encryption

Is it possible to create a single-user USB installation (with persistence) of Ubuntu Linux such that the entire USB stick is encrypted and requires a passphrase at boot time? Is there an online ...
19
votes
5answers
10k views

SSH to decrypt encrypted LVM during headless server boot?

When I installed Ubuntu 10.04 and, now, 10.10, I was offered the option of enabling "encrypted LVM" for my hard drive. After choosing that option, I am prompted for my password during boot to decrypt ...
14
votes
7answers
9k views

Linux boot loaders supporting full disk encryption?

Are there any Linux boot loaders supporting full disk encryption (a la TrueCrypt). I know there was work towards adding encryption support to GRUB2, but this does not seem to be ready yet. Any other ...
5
votes
4answers
3k views

How can I get a base64 encoded shaX on the cli?

sha1sum outputs a hex encoded format of the actual sha. I would like to see a base64 encoded variant. possibly some command that outputs the binary version that I can pipe, like so: echo -n "message" ...
7
votes
2answers
851 views

What encryption does vim -x use?

I read man vim, :h -x and :h encryption none of this actually says what algorithm it's encrypted with.
6
votes
2answers
702 views

I/O-overhead of dm-encrypted device?

What would be the Read-/Write-overhead when using dm-crypt (LUKS) as full disk-encryption (including root partition) on a Linux-Desktop (Ubuntu)? I plan to stack it like so: LUKS > LVM > ext4 The CPU ...
2
votes
1answer
656 views

How to restore GnuPG key after reinstall?

I know that GnuPG is all about security, thus it's not giving many chance of retrieve private keys (otherwise anyone could do it) but I've got a private key, and my own rev.asc file. I had to ...
9
votes
3answers
673 views

Portable encrypted container

I want to store some data encrypted to carry around with me (this includes some scans of relevant paperwork, my TAN List for online banking, my gnupg and ssh keys and stuff like that). So not really a ...
4
votes
1answer
859 views

Tunnel traffic through another machine over ssh

I want to be able to route a portion of my traffic through another machine over SSH. For example, is it possible to browse the web through the ssh tunnel and also browse the web through your LAN ...
4
votes
2answers
380 views

Is a journaling filesystem a good idea with a dm-crypt encrypted drive?

I was looking at dm-crypt and have seen that you can use whatever filesystem you like on top of the encrypted drive. So I was wondering if a journaled filesystem is a good idea as opposed to a ...
13
votes
3answers
4k views

Full disk encryption with password-less authentication in Linux

I have a fairly standard disk encryption setup in Debian 5.0.5: unencrypted /boot partition, and encrypted sdaX_crypt that contains all other partitions. Now, this is a headless server installation ...