Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Patent
1998-07-27
2000-11-14
Barron, Jr., Gilberto
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
713156, 713170, 713189, 713191, 380241, H04L 932, H04N 7167
Patent
active
061484008
ABSTRACT:
A hierarchical cryptographic system has distributed authority among different classes of units in the system. The system may comprise a trusted authority, a first unit authorized by the trusted authority to distribute public and private signature and encryption keys. A second unit accepts for use one or more of the keys only after performing a verification program using the public signature key of the trusted authority. The invention also comprises a unit of a cryptographic system having a processor and a read only memory. The read only memory has stored therein a verification program which includes a public signature key of a trusted authority, and the verification program is made a permanent part of the read only memory during the formation process of the read only memory prior to the application of electrical power to the read only memory.
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Barron Jr. Gilberto
The Merdan Group, Inc.
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