Data Partition Encryption documentation

On Thu, 2013-04-18 at 15:16 -0500, Adam Vande More wrote:

On this page http://www.postgresql.org/docs/9.2/static/encryption-options.html,
"gbde" is listed as the method for encrypting block devices. While
correct, "geli" is a much more appropriate mention as it's a more
powerful(e.g. aes-ni support) and secure(more ciphers, data
authentication,etc) solution.

Could you provide an updated wording? (E.g., should we just replace
gbde by geli, or list both?)

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On Wed, Jun 19, 2013 at 9:20 PM, Peter Eisentraut <peter_e@gmx.net> wrote:

On Thu, 2013-04-18 at 15:16 -0500, Adam Vande More wrote:

On this page

http://www.postgresql.org/docs/9.2/static/encryption-options.html,

"gbde" is listed as the method for encrypting block devices. While
correct, "geli" is a much more appropriate mention as it's a more
powerful(e.g. aes-ni support) and secure(more ciphers, data
authentication,etc) solution.

Could you provide an updated wording? (E.g., should we just replace
gbde by geli, or list both?)

Sure, here is a change that encompasses more than my original observation.
Take or leave or modify what you wish.

pseudo diff

-"On Linux, encryption can be layered on top of a file system using a "loopback
device". This allows an entire file system partition to be encrypted on
disk, and decrypted by the operating system. On FreeBSD, the equivalent
facility is called GEOM Based Disk Encryption (gbde), and many other
operating systems support this functionality, including Windows."

+"There are at least two methods of encrypting a file system. The first is
to use a tool which implements an encrypted file system. On Linux,
eCryptfs or EncFS
are commonly used for this while FreeBSD uses PEFS. The other and perhaps
more common method is to encrypt the block device a file system or swap
partition resides on. These types of solutions can also provide full disk
encryption. Linux generally uses dm-crypt + LUKS for this functionality
with other options dependent on kernel version/distro. On FreeBSD, there
are two GEOM modules to encrypt block devices: geli & gbde with geli being
the preferred solution for speed, security, and options. Many other
operating system have their own method of block device or full disk
encryption."

--
Adam Vande More

On Wed, Jun 19, 2013 at 09:45:34PM -0500, Adam Vande More wrote:

On Wed, Jun 19, 2013 at 9:20 PM, Peter Eisentraut <peter_e@gmx.net> wrote:

On Thu, 2013-04-18 at 15:16 -0500, Adam Vande More wrote:

On this page http://www.postgresql.org/docs/9.2/static/

encryption-options.html,

"gbde" is listed as the method for encrypting block devices. While
correct, "geli" is a much more appropriate mention as it's a more
powerful(e.g. aes-ni support) and secure(more ciphers, data
authentication,etc) solution.

Could you provide an updated wording? (E.g., should we just replace
gbde by geli, or list both?)

Sure, here is a change that encompasses more than my original observation.
Take or leave or modify what you wish.

pseudo diff

-"On Linux, encryption can be layered on top of a file system using a "loopback
device". This allows an entire file system partition to be encrypted on disk,
and decrypted by the operating system. On FreeBSD, the equivalent facility is
called GEOM Based Disk Encryption (gbde), and many other operating systems
support this functionality, including Windows."

+"There are at least two methods of encrypting a file system. The first is to
use a tool which implements an encrypted file system. On Linux, eCryptfs or
EncFS are commonly used for this while FreeBSD uses PEFS. The other and
perhaps more common method is to encrypt the block device a file system or swap
partition resides on. These types of solutions can also provide full disk
encryption. Linux generally uses dm-crypt + LUKS for this functionality with
other options dependent on kernel version/distro. On FreeBSD, there are two
GEOM modules to encrypt block devices: geli & gbde with geli being the
preferred solution for speed, security, and options. Many other operating
system have their own method of block device or full disk encryption."

I have developed the attached doc patch to improve our details around
storage encryption.

--
Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ Everyone has their own god. +

On Mon, Dec 2, 2013 at 04:15:00PM -0500, Bruce Momjian wrote:

pseudo diff

-"On Linux, encryption can be layered on top of a file system using a "loopback
device". This allows an entire file system partition to be encrypted on disk,
and decrypted by the operating system. On FreeBSD, the equivalent facility is
called GEOM Based Disk Encryption (gbde), and many other operating systems
support this functionality, including Windows."

+"There are at least two methods of encrypting a file system. The first is to
use a tool which implements an encrypted file system. On Linux, eCryptfs or
EncFS are commonly used for this while FreeBSD uses PEFS. The other and
perhaps more common method is to encrypt the block device a file system or swap
partition resides on. These types of solutions can also provide full disk
encryption. Linux generally uses dm-crypt + LUKS for this functionality with
other options dependent on kernel version/distro. On FreeBSD, there are two
GEOM modules to encrypt block devices: geli & gbde with geli being the
preferred solution for speed, security, and options. Many other operating
system have their own method of block device or full disk encryption."

I have developed the attached doc patch to improve our details around
storage encryption.

Patch applied.

--
Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ Everyone has their own god. +

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