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Server-client PKI for applied key management system and process

  • US 10,560,440 B2
  • Filed: 03/10/2016
  • Issued: 02/11/2020
  • Est. Priority Date: 03/12/2015
  • Status: Active Grant
First Claim
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1. A method for obtaining a public key for an application of a communication device, the method comprising:

  • determining that a first public key corresponding to a first recipient of a communication from the communication device is unavailable in a local key store of the communication device;

    requesting by the communication device the first public key corresponding to the first recipient from an applied key management system;

    receiving the first public key from the applied key management system, wherein the first public key is authorized by at least one policy;

    using the first public key for the application, wherein the first public key is authorized by the applied key management system in response to determining that one or more key attributes of the first public key conforms to the at least one policy;

    determining whether a second public key corresponding to a second recipient is available in the local key store of the communication device; and

    requesting the second public key from the applied key management system in response to determining that the second public key is unavailable.

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