Patent ID: 9729318
Date: 2017-08-08
CPC Classifications: H04L

Claim:
1. A method to enable a user to obtain authenticated access to a resource, comprising: sensing a physical object associated with the user at a first time; using one or more sensed physical object parameters to produce a first digital seed, the one or more sensed physical object parameters being a same set of data generated from at least two or more iterations of sensing the physical object, the same set of data having a given entropy; augmenting the first digital seed with context-specific information to generate a second seed; providing at least one of the first and second seeds to a key generator and, in response, receiving a key that is derived at least in part using the provided seed; sensing the physical object at a second time to obtain the one or more sensed physical object parameters; validating that a component of the key can be derived from the one or more sensed physical object parameters that are obtained when the physical object is sensed at the second time; and upon successful validation, completing an authentication to access the resource.