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Tokens/keys for wireless communications

  • US 7,532,723 B2
  • Filed: 11/23/2004
  • Issued: 05/12/2009
  • Est. Priority Date: 11/24/2003
  • Status: Expired due to Fees
First Claim
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1. A method comprising:

  • producing wireless transmit/receive unit (WTRU) specific information based on information specific to a user of the WTRU and context information relating to the user, wherein the context information relating to the user includes at least one of the following;

    rules and modes of user controlled WTRU operation, Internet preferences of the user, or web favorites of the user;

    converting the WTRU specific information into an N-bit vector of fixed length;

    producing a user specific token/key using the N-bit vector based on a specific application for the tokens/keys;

    using the produced token/key to produce a watermark, signature or encryption code; and

    inserting the watermark, signature or encryption code into a signal to be transmitted wirelessly.

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