Enabling secure communications with a client

Details Enabling secure communications with a client Enabling secure communications with a client

2005-05-17

2005-05-17

Morse, Gregory (Department: 2134)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

Reexamination Certificate

active

06895504

ABSTRACT:
A unique processor serial number may be utilized to augment a device key seed stored in a non-volatile memory. In this way, a relatively secure system may be enabled that facilitates renewing the device key. An integrated circuit may include a transport demultiplexer and key logic. The key logic communicates with the processor using a secure protocol. The key logic can generate random numbers that may be hashed with the processor serial number and the device key seed to generate a device key. The device key may be provided to a head end to facilitate secure communications between the head end and the client.

REFERENCES:
patent: 4529870 (1985-07-01), Chaum
patent: 5784461 (1998-07-01), Shaffer et al.
patent: 5963646 (1999-10-01), Fielder et al.
patent: 6370649 (2002-04-01), Angelo et al.
patent: 6418472 (2002-07-01), Mi et al.
patent: 6523067 (2003-02-01), Mi et al.

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