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[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. Rob _______________________________________________ fitsbits mailing list http://listmgr.cv.nrao.edu/mailman/listinfo/fitsbits -------------------------------------------------------------------------- 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 USA http://hea-www.harvard.edu/~arots/ -------------------------------------------------------------------------- |
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