Cryptography – Particular algorithmic function encoding – Nbs/des algorithm
Patent
1990-08-17
1992-05-05
Swann, Tod R.
Cryptography
Particular algorithmic function encoding
Nbs/des algorithm
380 16, 380 23, 380 25, 380 47, H04L 902
Patent
active
051115042
ABSTRACT:
A field upgradeable security system deciphers signals received from a communication network. An information processor includes a receptacle for receiving a replaceable security element. The replaceable security element generates a working key necessary to the operation of the information processor. The working key is communicated to the information processor encrypted under a secret key. The information processor decrypts the encrypted working key for use in deciphering a received communication signal. Additional layers of encryption can be added to the communications between the information processor and security element to increase the level of security.
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"Proposal for New Part 6 of the EBU Specification for the MAC/Pocket Family", Oct. 24, 1988.
Esserman James N.
Moroney Paul
General Instrument Corporation
Lipsitz Barry R.
Swann Tod R.
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