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SYSTEM AND METHOD FOR SHARING KEYS ACROSS AUTHENTICATORS

  • US 20180191501A1
  • Filed: 12/31/2016
  • Published: 07/05/2018
  • Est. Priority Date: 12/31/2016
  • Status: Active Grant
First Claim
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1. A system comprising:

  • first logic and/or circuitry to generate and store a persistent group identification code (Group-ID) for a group of authenticators sharing a common set of authentication (Uauth) keys, an initial Group-ID to be generated on a first use of a first authenticator and/or following a factory reset of the first authenticatorsecond logic and/or circuitry of the first authenticator to generate and store an individual asymmetric wrapping key encryption key (WKEK) on a first use of the first authenticator and/or following each factory reset of the first authenticator;

    third logic and/or circuitry to generate and store a symmetric wrapping key (WK), the wrapping key to be generated on a first use of the first authenticator and/or following each factory reset of the first authenticator;

    fourth logic and/or circuitry of the first authenticator to generate a join-block using an authenticator identification code for the first authenticator and the WKEK, the join-block usable to join an existing authenticator group, the join block to be sent to a second authenticator;

    fifth logic and/or circuitry of a second authenticator to verify the join-block and generate a join response block responsive to user approval, the join response block generated by encrypting the WK and Group-ID using the WKEK, the join response block to be transmitted to the first authenticator; and

    sixth logic on the first authenticator to decrypt the join response block and store the WK and Group-ID.

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