Communication system for portable appliances

Details Communication system for portable appliances Communication system for portable appliances

1996-07-29

1999-03-23

Cain, David

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

H04K 100

Patent

active

058870636

ABSTRACT:
A portable device 12 is capable of communicating with a host device 10 remotely, via a communications network 22 which may be prone to interception, and directly (e.g. via an I.R. Link 24, 40), when the devices are in close physical proximity and when the risk of interception is minimal. The host device 10 and the portable device 12 update a shared security key or the like when they communicate directly and this key is used to authenticate the portable device 12 and/or encrypt the communication when the portable device 12 attempts to communicate remotely.

REFERENCES:
patent: 4575621 (1986-03-01), Dreifus
patent: 5131038 (1992-07-01), Puhl et al.
patent: 5202922 (1993-04-01), Iijima
patent: 5375140 (1994-12-01), Bustamante et al.
patent: 5623546 (1997-04-01), Hardy et al.
patent: 5661802 (1997-08-01), Nilssen
patent: 5715390 (1998-02-01), Hoffman et al.
IBM Technical Disclosure Bulletin, vol. 29, No. 9, Feb. 1987 New York US, pp. 3949-3950.
Machine Design, vol. 61 No. 2, Jan. 26, 1989 Clevland Us, pp. 42 XP 000052605 "Proximity Tags Converse with Nearby Computer".

Affiliated with

Also associated with

Rating

Communication system for portable appliances does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Communication system for portable appliances, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Communication system for portable appliances will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2134022