Descrambler subscriber key production system utilizing key seeds

Details Descrambler subscriber key production system utilizing key seeds Descrambler subscriber key production system utilizing key seeds

1984-03-15

1987-01-06

Cangialosi, Salvatore

Telegraphy

Systems

Printing

178 2217, 178 2215, 178 2209, 358122, H04L 900

Patent

active

046348085

ABSTRACT:
A system for reproducing in a descrambler of a subscriber communication network a subscriber key signal that is unique to the descrambler and was used in encrypting a key signal that must be decrypted for use in descrambling a signal received by the descrambler. The scrambled signal is received by the descrambler together with the encrypted key signal and a key generation number containing an address for accessing a predetermined area in a memory contained in the descrambler. The system includes a circuit for providing a subscriber key generation signal that is unique to the descrambler; a subscriber key generator for reproducing the unique subscriber key signal by processing the subscriber key generation signal in accordance with a predetermined encryption algorithm upon the algorithm being keyed by a prescribed subscriber key seed signal that is unique to the descrambler; a secure memory storing a plurality of different subscriber key seed signals, and for providing the prescribed seed signal to key the algorithm when the area of the memory containing the prescribed seed signal is accessed by the address contained in the received key generation number; and a circuit for accessing the first memory with the address contained in the received key generation number. The subscriber key generation signal is formed by combining the received key generation number with a unique subscriber address signal that is stored in a second memory of the descrambler.

REFERENCES:
patent: 3659046 (1972-04-01), Angeleri et al.
patent: 3911216 (1975-10-01), Bartek et al.
patent: 3914534 (1975-10-01), Forbes
patent: 4058830 (1977-11-01), Guinet et al.
patent: 4168396 (1979-09-01), Best
patent: 4200770 (1980-04-01), Hellman et al.
patent: 4292650 (1981-09-01), Hendrickson
patent: 4323921 (1982-04-01), Guillou
patent: 4337483 (1982-06-01), Guillou
patent: 4354201 (1982-10-01), Sechet et al.
patent: 4365110 (1982-12-01), Lee et al.
patent: 4388643 (1983-06-01), Aminetzah
patent: 4461032 (1984-07-01), Skerlos
patent: 4467139 (1984-08-01), Mollier
patent: 4471164 (1984-09-01), Henry
patent: 4484027 (1984-11-01), Lee et al.
patent: 4531020 (1985-07-01), Wechselberger et al.
patent: 4531021 (1985-07-01), Bluestein et al.

Affiliated with

Also associated with

Rating

Descrambler subscriber key production system utilizing key seeds does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Descrambler subscriber key production system utilizing key seeds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Descrambler subscriber key production system utilizing key seeds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-685104