Encryption cipher used in Red Hat Fedora?

[Welly Wu]

I installed Red Hat Fedora 16 64 bit GNU/Linux and I set it up to use LVM and to encrypt my Intel 2nd Generation X25-M 160 gigabyte Solid State Drive. I have an ASUS N61JV-X2 notebook PC with Crucial 8 gigabytes dual-channel PC-8500 DDR3 SDRAM. What is the encryption cipher used? I am guessing that it is Advanced Encryption Standard in Cipher Block Chain mode at 256 bits key strength and SHA-512 hash algorithm because it is the industry standard. However, I would like information to confirm this hunch of mine or to tell me precisely what encryption system is used. Please reply if you can tell me my answer. Thank you.

[nonamedotc]

I know that, as of, Fedora 14 it was AES-128 with SHA 256 hashing. But, I am not sure if that has been changed in Fedora 16 to AES 256/SHA512. I will have to check. Will get back!

---------- Post added at 09:18 AM ---------- Previous post was at 09:16 AM ----------

This is what I found from Fedora 14 Documentation.

Fedora's default implementation of LUKS is AES 128 with a SHA256 hashing. Ciphers that are available are:

AES - Advanced Encryption Standard - FIPS PUB 197
Twofish (A 128-bit Block Cipher)
Serpent
cast5 - RFC 2144
cast6 - RFC 2612

It does not seems to have changed in Fedora 15/16. Here is F16 documentation.

[Welly Wu]

Is there any way for me to check for myself?

When I was using Microsoft Windows 7 Ultimate 64 bit, I enabled BitLocker and BitLocker to Go. I set it to AES-256 with the Elephant Diffuser and I could open up the MS-DOS terminal and type in a command to find out if Bitlocker was turned on and it is enabled and the strength of the cipher.

Can I do the same thing in Red Hat Fedora 16 64 bit GNU/Linux?

---------- Post added at 10:23 AM ---------- Previous post was at 10:19 AM ----------

Damn!

AES 128 bits is still incredibly strong cryptography though.

I used to run Ubuntu 11.10 64 bit GNU/Linux. I downloaded the Alternative Install .ISO and burned it onto a blank CD-R. It allowed me to pick a few ciphers including AES, Blowfish, Serpent and set the cipher strength.

Is there an alternative install .ISO file available for Red Hat Fedora 16 64 bit GNU/Linux?

In other words, is there any way that I can re-install Red Hat Fedora 16 64 bit GNU/Linux and specify the cipher and its strength with the help of a GUI?

Please reply if you can answer my questions.

[nonamedotc]

During my installations using Fedora DVD, I have not seen any options to specify the cipher and number of bits. I could have missed it, but I do not think so. You can look at the man pages for cryptsetup. But, honestly, I do not know as I have never changed the defaults yet.

Cheers.