Full Disclosure mailing list archives
Re: erase with magnet
From: Tomasz Konefal <twkonefal () compt com>
Date: Mon, 05 Apr 2004 12:10:35 -0400
Valdis.Kletnieks () vt edu wrote:
1) Gutmann's 35 passes were devised to stress the recording methodologies of the day. Many of them are for encoding schemes not used anymore. 2) Canadian RCMP TSSIT OPS-II says: "Must first be checked for correct functioning and then have all storage areas overwritten once with the binary digit ONE, once with the binary digit ZERO and once with a single numeric, alphabetic or special character, " (http://jya.com/rcmp2.htm) American DoD 5220-22.M says: "Overwriting all addressable locations with a character, its complement, then a random character and verify." This is permitted for classifications up to SECRET. It is not acceptable for TOP SECRET and higher. I have to conclude that *our* spooks are of the opinion that even 3 passes are sufficient to wipe out data thoroughly enough so that it's not worth it for the *other* spooks to try recovering 'Secret'...
here is a more recent paper from the RCMP along similar lines: http://www.rcmp-grc.gc.ca/tsb/pubs/it_sec/g2-003_e.pdf cheers, twkonefal -- Tomasz Konefal Systems Administrator Command Post and Transfer Corp. 416-585-9995 x.349 _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
Current thread:
- Re: erase with magnet, (continued)
- Re: erase with magnet Michal Zalewski (Apr 03)
- Re: erase with magnet Kurt Seifried (Apr 03)
- RE: erase with magnet Jeff Schreiner (Apr 03)
- Re: erase with magnet Maarten (Apr 04)
- RE: [inbox] Re: erase with magnet Exibar (Apr 04)
- Re: [inbox] Re: erase with magnet Maarten (Apr 04)
- RE: [inbox] Re: erase with magnet Exibar (Apr 04)
- Re[2]: [inbox] Re: erase with magnet phased (Apr 04)
- Re: erase with magnet Phaze 7 (Apr 05)
- Re: erase with magnet Valdis . Kletnieks (Apr 05)
- Re: erase with magnet Tomasz Konefal (Apr 05)
- Re: erase with magnet Seth Fogie (Apr 05)
- Re: erase with magnet Cedric Blancher (Apr 04)
- Re: erase with magnet Riad S. Wahby (Apr 03)
- Re: erase with magnet Riad S. Wahby (Apr 03)