Method to use secure passwords in an unsecure program...

Details Method to use secure passwords in an unsecure program... Method to use secure passwords in an unsecure program...

2007-04-03

2007-04-03

Sheikh, Ayaz (Department: 2131)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

C713S001000, C713S002000, C713S100000, C713S164000, C713S167000, C713S152000, C713S152000, C709S223000, C709S224000, C709S225000, C709S226000, C709S229000

Reexamination Certificate

active

09711028

ABSTRACT:
During power up initialization, security data such as passwords and other sensitive data which are stored in a lockable memory device are read and copied to protected system management interrupt (SMI) memory space, subject to verification by code running in the SMI memory space that the call to write the security data originates with a trusted entity. Once copied to SMI memory space, the security data is erased from regular system memory and the lockable storage device is hard locked (requiring a reset to unlock) against direct access prior to starting the operating system. The copy of the security data within the SMI memory space is invisible to the operating system. However, the operating system may initiate a call to code running in the SMI memory space to check a password entered by the user, with the SMI code returning a “match” or “no match” indication. The security data may thus be employed after the lockable memory device is hard locked and the operating system is started.

REFERENCES:
patent: 5537544 (1996-07-01), Morisawa et al.
patent: 5850559 (1998-12-01), Angelo et al.
patent: 5887131 (1999-03-01), Angelo
patent: 5944821 (1999-08-01), Angelo
patent: 5953422 (1999-09-01), Angelo et al.
patent: 5964877 (1999-10-01), Victor et al.
patent: 5974500 (1999-10-01), Maletsky et al.
patent: 6009495 (1999-12-01), DeRoo et al.
patent: 6128732 (2000-10-01), Chaiken
patent: 6178550 (2001-01-01), Pearce
patent: 6223284 (2001-04-01), Novoa et al.
patent: 6336185 (2002-01-01), Sargenti et al.
patent: 6343338 (2002-01-01), Reneris
patent: 6446213 (2002-09-01), Yamaki
patent: 6532510 (2003-03-01), Klein
Yokote et al., 1995, Department of Computer Science, Keio University, p. 385-398, “SCONE: Using Concurrent Objects for Low Level Operating System Programming” OOPSLA '95 Austin, TX, USA © 1995 ACM 0-89791-703-0/95/2010.

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