Acronis Drive Cleanser 6.0 - User Guide Benutzerhandbuch
Seite 30
Inhaltsverzeichnis
Benutzerhandbuch Acronis DriveCleanser
30 Copyright © Acronis, 2000-2007
Algorithmus
(writing method) Passes
Record
American: NAVSO
P-5239-26 (RLL)
4 1
st
pass – 0x01 to all sectors, 2 -
0x27FFFFFF, 3 – random symbol
sequences, 4 – verification.
American: NAVSO
P-5239-26 (MFM)
4 1
st
pass – 0x01 to all sectors, 2 -
0x7FFFFFFF, 3 – random symbol
sequences, 4 – verification.
German: VSITR
7
1
st
– 6
th
– alternate sequences of: 0x00
and 0xFF; 7
th
- 0xAA; i.e. 0x00, 0xFF,
0x00, 0xFF, 0x00, 0xFF, 0xAA.
Russian: GOST
P50739-95
1
Logical zeros (0x00 numbers) to each
byte of each sector for 6
th
to 4
th
security
level systems.
Randomly selected symbols (numbers)
to each byte of each sector for 3
rd
to 1
st
security level systems.
P. Gutmann’s
Algorithmus
35
Peter Gutmann’s Algorithmus is very
sophisticated. It’s based on his theory
of hard disk information wiping (see
).
B. Schneier’s
Algorithmus
7
Bruce Schneier offers seven pass
overwriting Algorithmus in his Applied
Cryptography book. 1
st
pass – 0xFF, 2
st
pass – 0x00, and then five times with a
cryptographically secure pseudo-
random sequence.
Schnell
1
Logical zeros (0x00 numbers) to all
sectors to wipe.