Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1995-05-16
1997-02-25
Cangialosi, Salvatore
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 4, H04L 900
Patent
active
056066155
ABSTRACT:
An improved computer security system including a portable, electronic Key, an Access Device with Touch Pad, a Lock, a Lock Server and Server Device, and a Master Device. The Access Device provides a means to validate the user to the Key. The Lock is physically located with, and connected to the host computer. Improved security is achieved through the use of "throw-away" passwords, which are generated in a random fashion by the Lock Server, and then loaded directly into volatile memory of Keys, but transferred to a Master Device for loading into volatile memory of Locks. These throw-away passwords are used in a process of cross validation between the Lock and Key, a requirement before access to the host computer is granted. A user specific "touch-print" provides a more secure and more user friendly way of preventing the use of Keys by unauthorized persons. Sensors, e.g., photosensors, within the Key, Lock and Master Device guard against physical attacks.
Additional security is obtained by locating the Lock external to the host computer, thereby preventing an unauthorized user from defeating the host computer operating system security.
REFERENCES:
patent: 4016405 (1977-04-01), McCone et al.
patent: 4433207 (1984-02-01), Best
patent: 4465901 (1984-08-01), Best
patent: 4812841 (1989-03-01), Chen
patent: 4942606 (1990-07-01), Kaiser et al.
patent: 4970504 (1990-11-01), Chen
patent: 5058164 (1991-10-01), Elmer et al.
patent: 5097506 (1992-03-01), Kaiser et al.
patent: 5173940 (1992-12-01), Lantz et al.
patent: 5475839 (1995-12-01), Watson et al.
patent: 5537544 (1996-07-01), Morisawa et al.
Lapointe Brian K.
Lapointe James A.
LandOfFree
Computer security system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Computer security system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computer security system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1979736