Apparatus for and method of controlling propagation of...

Details Apparatus for and method of controlling propagation of... Apparatus for and method of controlling propagation of...

2006-07-20

2008-12-30

Nalven, Andrew L (Department: 2134)

Cryptography

Key management

Key distribution

C380S284000, C726S027000

Reexamination Certificate

active

07471796

ABSTRACT:
A security system for controlling access to encrypted information, comprising: a memory for storing at least one decryption key for use in decrypting an encrypted item of information, the decryption key being associated with a security code which can be used to determine whether the security system is authorized to send encrypted copies of the decryption key to others. If the security system is authorized to send an encrypted copy of the decryption key, it encrypts the decryption key and propagates the encrypted copy of the decryption key. Each time the security system propagates a decryption key, it includes as part of the decryption key an identifier indicating the identity of a sender's key. A user can append a control word against their identity in the decryption key to instruct the security system to initiate a message to them or an agent informing them of the propagation of the key and giving information concerning that propagation.

REFERENCES:
patent: 5534857 (1996-07-01), Laing et al.
patent: 5825876 (1998-10-01), Peterson, Jr.
patent: 6246771 (2001-06-01), Stanton et al.
patent: 6847719 (2005-01-01), Ballard
patent: 2040117 (1995-07-01), None
patent: 1306360 (1995-12-01), None
patent: 2145437 (2000-02-01), None
patent: 0141353 (2001-06-01), None
patent: 0152017 (2001-07-01), None
English version of Russian Examination Report No. 2004107577/09.

Affiliated with

Also associated with

Rating

Apparatus for and method of controlling propagation of... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for and method of controlling propagation of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for and method of controlling propagation of... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4042576