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Cryptographic authentication for telemetry with an implantable medical device

  • US 20050203582A1
  • Filed: 03/15/2004
  • Published: 09/15/2005
  • Est. Priority Date: 03/15/2004
  • Status: Active Grant
First Claim
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1. An implantable device comprising:

  • a receiver configured to receive data corresponding to a message and a first hash value generated as a function of the message;

    a memory coupled to the receiver and configured to store a key and the message;

    a hash value generator coupled to the memory and configured to generate a second hash value as a function of the key and the message; and

    a comparator coupled to the hash value generator and configured to determine if the first hash value differs from the second hash value.

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