Process and apparatus for the protection of secret elements in a network of encrypting devices with open key management
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United States of America Patent
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-
Nov 6, 1990
Grant Date -
N/A
app pub date -
Feb 4, 1988
filing date -
Feb 17, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
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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