Process and apparatus for the protection of secret elements in a

Details Process and apparatus for the protection of secret elements in a Process and apparatus for the protection of secret elements in a

1988-02-04

1990-11-06

Cangialosi, Salvatore

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 24, 380 25, H04L 932

Patent

active

049691880

ABSTRACT:
Each encryption device of a communication network is divided into a base part and a security module in credit card form. The security module contains the functional stages required for the coding/decoding of the keys of lower hierarchical levels under keys of higher hierarchical levels and thus the secret elements of the network. The base parts contain no secret elements. The secret elements are stored in the security module preferably in a cryptologically secured form. A password also provided therein secures it against unauthorized use.

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Federal Information Processing Standards Publication FIPS PUB 46-1, "Data Encryption Standard", Jan. 1977.
"Cryptography: A New Dimension in Computer Data Security", pp. 562-564, John Wiley & Sons, New York.

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