AES (advanced encryption standard) is an encryption algorithm which is used by organizations like U.S. Department of Defense and standardized by the NIST (National Institute of Standards and Time).

learn more… | top users | synonyms

0
votes
1answer
44 views

Is there an AES 256 LUKS encryption option in Fedora?

it was suggested that my post (http://security.stackexchange.com/questions/73140/is-there-an-aes-256-luks-encryption-option-in-fedora?noredirect=1#comment120019_73140) would be better if I asked it ...
0
votes
0answers
30 views

Is there an AES 256 LUKS encryption option in Fedora? [closed]

I have certain information on my drive that I don't want anyone (not even me ;) ) to gain access to. I read recently that Fedora only offers EAS 256 LUKS encryption. This just isn't secure enough ...
0
votes
0answers
46 views

Enable AES encryption via ATA password on Samsung Evo 840 with data already on the drive?

Does the Evo 840 support changing the AES key (more or less) on the fly (in my case from "no key" to "my key")? I don't mind if it takes an hour to encipher the data as long as I don't have to ...
3
votes
2answers
67 views

gpg2 - no option to select aes block cipher and outdated use agent?

With OpenSSL, I can select a what type of block cipher to use for encrypting a file. For example, if I want to encrypt a file with AES256 CBC block cipher mode: openssl aes-256-cbc -a -salt -pass ...
1
vote
0answers
16 views

Is there a program that offers cascading encrypton? [closed]

I want to encrypt files that I'm going to put on a USB Flash Drive. I would prefer a AES-Twofish-Serpent cascading encryption with a Whirlpool hash. SHA 512 hash would be fine but I prefer Whirlpool. ...
0
votes
0answers
24 views

Question about AES and Cryptsetup

I've read that AES can work with three key sizes: 128 bits, 192 bits and 256 bits. I'm trying to set up a LUKS partition with CryptSetup, using “aes-xts-plain64” cipher. Why can I create keys of any ...
5
votes
2answers
909 views

Is it better to use Bitlocker or the built-in-drive-encryption that my ssd offers?

System: Intel i7 4790 ( has AES-NI function ) ASUS Z97-PRO mobo Samsung 250GB EVO ssd ( with built in encryption option ) Windows 7 x64 If i just want to encypt my boot drive with AES256 or ...
0
votes
1answer
27 views

Does software-based OTFE cripple SSD performance without CPU AES?

Sorry for the alphabet soup. I want to use software-based on-the-fly AES file encryption I will not use full disk encryption (only file and partition). This would be on an older Core 2 system, so ...
1
vote
1answer
546 views

How to get system-wide use of Intel's AES-NI acceleration with OpenSSL 0.9.8?

I found the following instructions to get Intel's contrib OpenSSL 0.9.8 engine code on some Westmere-based systems that we have: $ wget https://www.openssl.org/contrib/intel-accel-1.5.tar.gz $ tar ...
1
vote
1answer
126 views

How do I import a raw AES key to a JCEKS keystore?

I have some test data that is encrypted with 256 bit AES. The customer supplied the key as a 256 bit file. The application uses a java key store for decryption keys. The keytool options I've found ...
1
vote
2answers
179 views

How do you create an AES XTS key?

I am interested in hacking around with Gluster cloud FS whose most recent beta uses AES with XTS only. It also requires openssl >= 1.0.1. The 1.0.1f Jan 2014 openssl (with 64 bit lib) install for my ...
0
votes
0answers
14 views

Do encfs stashes with the same settings produce encrypted files with same encrypted contents and encrypted filenames?

If I create two files with the same content and filenames (and paths) in two separate encfs filesystems that share the same settings and key, will the encrypted versions of those files (as well as ...
1
vote
0answers
25 views

Damn Small Linux: aes module not working

I try to get losetup with aes encryption working on a Damn Small Linux 4.11 rc2, but without success: # modprobe aes $ dd if=/dev/random ibs=512 count=256 of=crypt.img # losetup -e aes /dev/loop0 ...
5
votes
1answer
711 views

Changing encryption settings for Microsoft Office 2010/2013

Although there are Office 2013 settings to change how encryption is performed, when you encrypt Open XML Format files (.docx, .xslx, .pptx, and so on) the default values — AES (Advanced Encryption ...
-1
votes
0answers
215 views

Create an AES encrypted ISO with Linux and open it in Windows [closed]

I need to create an .iso file in a Linux environment. That iso may be created with any CD-burner software. The cd must be supported in a Windows environment, and by people knowing the password, be ...
10
votes
1answer
5k views

How do I fix “WARNING: message was not integrity protected” when using GPG symmetrical encryption?

I've encrypted a file using symmetric encryption like this: gpg --symmetric myfile which results in a file myfile.gpg. Alright. Now let's decrypt the file again: gpg -o myfile --decrypt ...
1
vote
0answers
261 views

Upgrading from loop-aes to cryptsetup

Once upon a time, I had an encrypted external disk that I would mount thus: # losetup -e AES128 /dev/loop1 /dev/sdb1 # fsck /dev/loop1 # mount /dev/loop1 /mnt/wd # ls /wd There are those that say ...
2
votes
3answers
762 views

Disk encryption: advantages and drawbacks of hardware disk encription vs dm-crypt

I'm going to reinstall my system (Ubuntu) on a Samsung 840 pro SSD. This disk can do AES hardware encryption. I wonder what would be the drawbacks and/or advantages of taking this approach versus ...
4
votes
4answers
3k views

OpenSSL hash function for generating AES key

What hash function does OpenSSL use to generate a key for AES-256? I can't find it anywhere in their documentation. $ touch file $ openssl aes-256-cbc -nosalt -P -in file enter aes-256-cbc ...
0
votes
1answer
246 views

data safety in excel

If protecting workbook in ms excel (2010, 2007, 2003) is enough safe for a sensitive data? There is a possibility to choose encryption aes 128 bit in ms excel 2003 and 2007 (as default), from that ...
3
votes
0answers
1k views

How to use an old Kingston DataTraveler Vault Privacy USB flash drive on Linux?

My company provides me a DTVP with hardware AES encryption two years ago and the CDrom image does only contain tools for Windows and MacOS X. Kingston products now have support for Linux. Current ...
5
votes
1answer
483 views

Intel's AES-NI performance: Isn't the hard drive the bottleneck?

Will I see a performance gain with AES-NI using dm-crypt/LUKS for hard drive system encryption? Isn't the hard drive the bottleneck even without hardware acceleration?
3
votes
2answers
89 views

Speed of encrypted flash drive

I've encrypted my Transcend Jetflash flash drive (16 GB, USB2, ext2). Before the operation, the flash drive's speed was: # dd if=/dev/zero of=/media/JetFlash/file bs=1M count=256 Results with: 26,5 ...
0
votes
1answer
1k views

How to determine if zip is encrypted by AES

I have to determine encryption method of ZIP files I'm receiving. Mostly I'm interested to know if AES was used or not... Any idea ?
7
votes
5answers
5k views

Is it safe to store my passwords in an encrypted .7z/.zip by 7-zip?

Here is what I do: Type in all kinds of passwords in an excel file (.xlsx) Zip it with a password by 7-zip AES 256 length > 8 combination of A-Z a-z 0-9 symbols different from ...
2
votes
2answers
1k views

Questions on 'gpg2' security

I have a couple of questions on the security of gpg/gpg2 using symmetric encryption. They are (I imagine) very basic, so apologies if they are documented somewhere. The thing is, I don't know what to ...
0
votes
1answer
174 views

What is the minimum time-period for selecting a new AES?

After how many years submissions are accepted for a new AES? Few months back I heard the news of attacks on AES and it is suggested that AES-128 bit is more secure than AES-256-bit.