Cryptography – Key management – Key distribution
Reexamination Certificate
2008-04-01
2008-04-01
Moazzami, Nasser (Department: 2136)
Cryptography
Key management
Key distribution
Reexamination Certificate
active
09973301
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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Hawkes Philip
Leung Nikolai K. N.
Rose Gregory G.
Cervetti David García
Godsey Sandra L.
Kim Won Tae C.
Moazzami Nasser
Rouse Thomas R.
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