System and method for authenticating the proximity of a wireless token to a computing device

  • US 8,333,317 B2
  • Filed: 09/30/2004
  • Issued: 12/18/2012
  • Est. Priority Date: 09/30/2003
  • Status: Active Grant
First Claim
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1. A communication system, comprising:

  • a proximity reader within a security boundary, configured to receive a radio frequency (RF) signal from a wireless token located within a proximity to the proximity reader and extract a credential from the received RF signal, wherein the wireless token is configured to include a plurality of credentials for accessing different services from one or more service providers;

    a secure processor within the security boundary, configured to receive the credential from the proximity reader, to store the credential within the security boundary, and to cryptographically sign or encrypt the credential to allow a service provider system external to the security boundary to authenticate that the credential is from the wireless token; and

    an external interface within the security boundary configured to interface with components outside of the security boundary to send the cryptographically signed or encrypted credential to the service provider system in response to a challenge from the service provider system,wherein the security boundary is configured to prevent software that is executing external to the security boundary from accessing the credential extracted from the received RF signal by the proximity reader and stored by the secure processor.

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