Patent Document ID: 8014526
Application ID: 11069234

Base Claim:
1. A secure wireless data communications device for transmitting plain text in an encrypted message comprising cipher text and an initialization vector, the secure wireless communications device having associated therewith a media access controller (MAC) layer, the device comprising: a seed generator operable to perform a hashing algorithm to generate a seed using a secret key, a device address, and a changing reference value, the changing reference value comprising a MAC layer sequence number; a random initialization vector (IV) generator for generating a random IV; a key encrypter for generating a key sequence based upon the seed and the random IV; a logic circuit generating cipher text based upon the key sequence and plain text; and a wireless communications device connected to said logic circuit and said random IV generator for wirelessly transmitting the encrypted message comprising the cipher text and random IV.

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Claim 6:
6. The device of claim 1 wherein the secret key comprises a static secret key.