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Peripheral authentication

  • US 8,667,303 B2
  • Filed: 11/22/2010
  • Issued: 03/04/2014
  • Est. Priority Date: 11/22/2010
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • determining, based on information read or received from a peripheral in communication with a host device, that the peripheral is capable of authentication;

    configuring data lines for non-differential signaling;

    performing an authentication protocol using the non-differential signaling data lines effective to authenticate the peripheral; and

    responsive to the peripheral being authenticated, re-configuring the non-differential signaling, data lines back to differential signaling for full use, orresponsive to the peripheral not being authenticated, configuring the non-differential signaling, data lines for limited use or no use.

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