A Space & astronomy forum. SpaceBanter.com

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » SpaceBanter.com forum » Astronomy and Astrophysics » FITS
Site Map Home Authors List Search Today's Posts Mark Forums Read Web Partners

[fitsbits] Hash Functions (MD5 is very obsolete)

Thread Tools Display Modes
Old July 21st 08, 05:23 PM posted to sci.astro.fits
Arnold Rots
external usenet poster
Posts: 13
Default [fitsbits] Hash Functions (MD5 is very obsolete)

The RXTE archive contains SHA(-1) (FIPS 180-1) digests for all its
data products. But, to my knowledge, it has not been used by any users
worried about the integrity of the data they received.

- Arnold

Rob Seaman wrote:
Thierry Forveille wrote:

Is anyone on the list aware of uses of the MD5 checksum in FITS
beyond protection against accidental bitflips from bad hardware?

Good question!

If the goal is to protect against data accidents (whatever the cause),
the FITS checksum should be considered as a strong contender instead
of any secure hash.

That said, MD5 is used by default for many astronomical data transport
and archive chores. As the broader computing communities continue to
transition to SHA-2, support for MD5-based utilities will narrow.
Remediating this is certainly not a top priority, however, which is
why I worded it as a "reminder" :-)

When implementing new systems, there are few good arguments for
choosing MD5.


fitsbits mailing list


Arnold H. Rots Chandra X-ray Science Center
Smithsonian Astrophysical Observatory tel: +1 617 496 7701
60 Garden Street, MS 67 fax: +1 617 495 7356
Cambridge, MA 02138

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
[fitsbits] Hash Functions (MD5 is very obsolete) Rob Seaman FITS 0 July 9th 08 03:00 AM
[fitsbits] Hash Functions (MD5 is very obsolete) Thierry Forveille[_3_] FITS 0 July 9th 08 01:54 AM
[fitsbits] Hash Functions (MD5 is very obsolete) Rob Seaman FITS 0 July 8th 08 02:25 PM
Luminosity Functions Steve Willner Research 0 September 1st 07 08:47 AM
Luminosity Functions Steve Willner Research 1 August 24th 07 09:07 AM

All times are GMT +1. The time now is 11:37 PM.

Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.
Copyright 2004-2022 SpaceBanter.com.
The comments are property of their posters.