System for storing and distributing keys for cryptographically p

Details System for storing and distributing keys for cryptographically p System for storing and distributing keys for cryptographically p

1986-04-08

1988-09-13

Cangialosi, Salvatore

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 25, 380 28, H04L 904

Patent

active

047714590

ABSTRACT:
In a system for storing and distributing keys for cryptographically protected communication each terminal (T.sub.i) must be provided with keys. If the system comprises many terminals (T.sub.i) each terminal must have a large memory capacity therefor. According to the invention, the terminals are combined in groups (A.sub.1, A.sub.2) optionally groups of such groups (B.sub.1) being formed. By assigning, in each group, keys (g, s) to the terminals belonging to the grop (G, S) the quantity of keys to be stored in each terminal can be significantly reduced.

REFERENCES:
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patent: 4386233 (1983-05-01), Smid et al.
patent: 4386234 (1983-05-01), Ehrsam et al.
patent: 4399531 (1983-08-01), Grande et al.
patent: 4411017 (1983-10-01), Talbot
patent: 4414661 (1983-11-01), Karlstrom
patent: 4531020 (1985-07-01), Wechselberger et al.
patent: 4531021 (1985-07-01), Bluestein et al.
patent: 4549308 (1985-10-01), Lo Pinto
patent: 4578531 (1986-03-01), Everhart et al.
patent: 4607137 (1986-08-01), Jansen et al.

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