Operation Manual

NN
Algorithm
(writing
method)
Passes Record
5.
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.
6.
P. Gutmann’s
algorithm
35 Peter Gutmann’s algorithm is very
sophisticated. It’s based on his
theory of hard disk information
wiping (see
http://www.cs.auckland.ac.nz/
~pgut001/pubs/secure_del.html).
7.
B. Schneier’s
algorithm
7 Bruce Schneier offers seven pass
overwriting algorithm in his Applied
Cryptography book. 1
st
pass – 0xFF,
2
st
pass – 0x00, and then five times
with a cryptographically secure
pseudo-random sequence.
8.
Fast 1 Logical zeros (0x00 numbers) to all
sectors to wipe.
Acronis PowerUtilities
59