Use of marker packets for synchronization of encryption/decrypti

Details Use of marker packets for synchronization of encryption/decrypti Use of marker packets for synchronization of encryption/decrypti

1996-01-29

1998-01-06

Gregory, Bernarr E.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 9, 380 48, 380 49, H04L 908, H04L 900

Patent

active

057063486

ABSTRACT:
To enhance the security provided by data encryption in a data communication network, encryption/decryption keys are changed periodically at the source and destination nodes for an established connection. A destination node must know not only the value of any new key but also when to begin using that key to decrypt received data packets. Synchronization (making sure a data packet is decrypted using a decryption key correlated with the encryption key used to encrypt the same packet) is achieved through the use of marker cells, which are special purpose cells. When a source node decides to activate a new key, previously sent to and stored at the destination node, a marker cell is transmitted by the source node to the destination node. When the destination node recognizes the marker packet, it discards it and activates the previously received key for use in decrypting subsequently received packets.

REFERENCES:
patent: 5197097 (1993-03-01), Takahashi et al.
patent: 5303302 (1994-04-01), Burrows
patent: 5321750 (1994-06-01), Nadan
patent: 5442702 (1995-08-01), Van Ooijen et al.
patent: 5473696 (1995-12-01), Van Breemen et al.
patent: 5555256 (1996-09-01), Calamvokis

Affiliated with

Also associated with

Rating

Use of marker packets for synchronization of encryption/decrypti does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Use of marker packets for synchronization of encryption/decrypti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Use of marker packets for synchronization of encryption/decrypti will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2336225