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Secure remote password

  • US 9,531,542 B2
  • Filed: 09/19/2014
  • Issued: 12/27/2016
  • Est. Priority Date: 09/19/2014
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving, by a server processor, from a computing device, a request for access to an application provided via a computer network by the server processor;

    receiving, by the server processor, a first security key fragment from the computing device, the first security key fragment being paired with a predetermined verifier key fragment unknown to the computing device;

    generating, by the server processor, a conditional seed key fragment associated with the predetermined verifier key fragment;

    transmitting, by the server processor, to the computing device, the conditional seed key fragment while maintaining the predetermined verifier key fragment at the server processor;

    receiving, by the server processor, a first hash parameter generated based on a hash function of the conditional seed key fragment and the first security key fragment, wherein the first security key fragment is associated with a username, the conditional seed key fragment is associated with a plurality of computing devices comprising the computing device, and the predetermined verifier key fragment is associated with the application, and wherein the username comprises multiple cascaded components for authorizations to the computer network per computing device of a user and per application for access by an associated computing device with separate authorization sessions per computing device and application;

    comparing, by the server processor, the first hash parameter to a second hash parameter, the second hash parameter being generated by the server processor based on the predetermined verifier key fragment and the conditional seed key fragment;

    determining, by the server processor, whether the first hash parameter and the second hash parameter match; and

    if the first hash parameter and the second hash parameter match, transmitting, by the server processor, a session security key configured to enable access to the application provided via the computer network by the server processor.

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