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Encrypted and other keys in public and private battery memories

  • US 7,613,924 B2
  • Filed: 03/08/2005
  • Issued: 11/03/2009
  • Est. Priority Date: 03/08/2005
  • Status: Active Grant
First Claim
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1. A battery module, comprising:

  • a public non-volatile memory containing an encrypted identity key to be decrypted by a root key in a host;

    a tamper resistant processing environment including private non-volatile memory containing another identity key;

    a challenge receiver operable within said battery module and configured to receive a challenge from said host; and

    a response generator operable within said battery module and configured to generate a response to the challenge based on the other identity key stored within the tamper resistant processing environment of said battery module.

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