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Systems and Methods for Authenticating and Protecting the Integrity of Data Streams and Other Data

  • US 20080222420A1
  • Filed: 02/27/2008
  • Published: 09/11/2008
  • Est. Priority Date: 06/08/1999
  • Status: Active Grant
First Claim
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1. A method for encoding and authenticating a streamed transmission of an electronic file, the method including:

  • generating a progression of check values, each check value in the progression being derived from at least one other check value in the progression and from a hash of a portion of the electronic file;

    encrypting a root check value in the progression of check values;

    transmitting the electronic file and the progression of check values to a user'"'"'s system via a data stream; and

    receiving and authenticating the data stream, including;

    receiving the root check value;

    decrypting the root check value; and

    using the decrypted root check value and one or more received check values in the progression of check values to authenticate portions of the data stream, whereby portions of the data stream are authenticated before the entire electronic file and the entire progression of check values are received by the user'"'"'s system.

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