New patents are issued by the USPTO on Tuesdays. Both of today's Spotlight Patents address aspects of digital fingerprinting. Assigned to Wallrust, the first patent concerns techniques for identifying peers by their interpersonal relationships. Assigned to Amazon, the second patent concerns techniques for analyzing the security of applications.
9,654,471, "Identifying peers by their interpersonal relationships," assigned to Wallrust, Inc.
According to this disclosure, a user is identified (and selectively granted access to protected resources) by using information that describes the user's interpersonal relationships. This information typically is stored in a datastore, such as a digital address book, an online profile page, or the like. The user's digital address book carries an "acquaintance pattern" that changes dynamically in time. This pattern comprises the information in the user's contact list entries. In this approach, the entropy inherent in this information is distilled into a unique acquaintance digest (or "fingerprint") by normalizing the contact list data, and then applying a cryptographic function to the result.
9,652,617, "Analyzing security of applications," assigned to Amazon.
In various embodiments, static, dynamic, and behavioral analyses may be performed on an application. A set of code fragments employed by the application may be determined. A set of device resources employed by the application may be determined. An application fingerprint is generated for the application and potentially malicious component and/or behaviors are identified. The application fingerprint encodes identifiers for the set of code fragments and identifiers for the set of device resources.