Method for data security in a digital telecommunication system

Details Method for data security in a digital telecommunication system Method for data security in a digital telecommunication system

1994-05-02

1997-01-07

Barron, Jr., Gilberto

Cryptography

Key management

Having particular key generator

380 21, 380 30, H04L 912, H04L 930

Patent

active

055925545

ABSTRACT:
For data security in a digital telecommunication system having a plurality of subscriber equipment, a public key is respectively calculated from a secret key prescribed in a first subscriber equipment. This public key is communicated to a second subscriber equipment that it participates with in a connection with the subscriber equipment being used in this second subscriber equipment for encoding secondary key information for matching the first subscriber equipment to transmission modalities that are repeatedly modified and that are provided in the second subscriber equipment for the first subscriber equipment. The subscriber equipment can calculate new keys from time to time. The initial settings of scramblers can be modified as transmission modalities.

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patent: 5365225 (1994-11-01), Bachhuber
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"A Method for Obtaining Digital Signatures and Public-Key Cryptosystems", R. L. Rivest et al, Communications of the ACM, vol. 21, No. 2, Feb. 1978, pp. 120-126.
"A Broadband Subscriber Network Using Optical Star Couplers", Tokura et al, IEEE/IEICE Global Telecommunications Conf. (1987), pp. 1439-1443).
"Implementation of a TDM Passive Optical Network for Subscriber Loop Applications", IEEE Journal of Lightwave Technology, vol. 7, No. 11, Nov. 1989, pp. 1752-1785.

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