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Securing a computing device accessory

  • US 9,948,636 B2
  • Filed: 04/24/2017
  • Issued: 04/17/2018
  • Est. Priority Date: 02/01/2013
  • Status: Active Grant
First Claim
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1. At an accessory device, a method of authenticating pairing between a host device and the accessory device, the method comprising:

  • establishing a connection with the host device;

    sending information including a security chip certificate to the host device;

    receiving a pairing certificate from the host device, the pairing certificate encrypted via a private key of a remote pairing service, wherein the pairing certificate includes a pairing public key and a digest of the security chip certificate, signed via the private key of the remote pairing service;

    decrypting the pairing certificate using a public key of the remote pairing service;

    verifying the information in the pairing certificate; and

    if the host device is verified, then completing pairing between the host device and the accessory device.

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