Method and apparatus for security in a data processing system
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United States of America Patent
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Apr 1, 2008
Grant Date -
Apr 10, 2003
app pub date -
Oct 9, 2001
filing date -
Oct 9, 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. The short-time key is available with each broadcast message, wherein sufficient information to calculate the short-time key is provided in an Internet protocol header preceding the broadcast content. Broadcasts are then encrypted using the short-time key, wherein the user decrypts the broadcast message using the short-time key.
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