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Method for secure single-packet remote authorization

  • US 20070234428A1
  • Filed: 03/22/2007
  • Published: 10/04/2007
  • Est. Priority Date: 03/22/2006
  • Status: Active Grant
First Claim
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1. A method for secure remote authorization using a single packet authorization (SPA) server on a host system, a SPA client on a client system, and a formatted SPA packet sent from the client in order to gain access to services on the host, comprising the steps of:

  • constructing a packet of access code comprising a plurality of bytes of random data and a hash function of the random data;

    sending said packet to a server configured to allow certain predetermined packets;

    allowing access to said server if said packet matches a predetermined packet;

    storing the hash function of every allowed packet at the server and preventing access for any subsequently sent duplicate packets.

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