Method and apparatus for security in a data processing system
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United States of America Patent
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Feb 27, 2007
Issued Date -
N/A
app pub date -
Aug 28, 2002
filing date -
Aug 20, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Method and apparatus for secure transmissions. Each user is provided a registration key. A long-time updated broadcast key is encrypted using the registration key and provided periodically to a user. A short-time updated key is encrypted using the broadcast key and provided periodically to a user. Broadcasts are then encrypted using the short-time key, wherein the user decrypts the broadcast message using the short-time key. One embodiment provides link layer content encryption. Another embodiment provides end-to-end encryption.
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