System and method for protecting disk drive password when...

Details System and method for protecting disk drive password when... System and method for protecting disk drive password when...

2007-04-19

2010-10-12

Elamin, Abdelmoniem (Department: 2116)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S155000, C713S159000, C713S161000, C713S169000, C713S170000, C726S019000, C726S021000

Reexamination Certificate

active

07814321

ABSTRACT:
To unlock a HDD when a computer is in the suspend state, at both BIOS and the HDD a secret is combined with a password to render a new one-time password. BIOS sends its new one-time password to the HDD which unlocks itself only if a match is found. The new one-time password is then saved as an “old” password for subsequent combination with the secret when coming out of subsequent suspend states. In this way, if a computer is stolen the thief cannot sniff the bus between BIOS and the HDD to obtain a password that is of any use once the computer ever re-enters the suspend state.

REFERENCES:
patent: 7308250 (2007-12-01), Khare et al.
patent: 7657743 (2010-02-01), Miyazawa et al.
patent: 2003/0212894 (2003-11-01), Buck et al.
patent: 2006/0179293 (2006-08-01), O'Connor et al.
patent: 2006/0227378 (2006-10-01), Mihira
patent: 2008/0028447 (2008-01-01), O'Malley et al.

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