Interception of touch pad events for handling in a secure environment

US10037518B2 · kind B2 · utility

Assignee

• INC SQUARE, CO., LTD · JP

Inventors

• Dino Dai Zovi · Brooklyn, US
• Eric Monti · San Francisco, US

Key dates

• Filing date: Feb 28, 2017
• Grant date: Jul 31, 2018
• Expiry date: Feb 28, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L63/145
• WIPO field: IT methods for management
• WIPO sector: Electrical engineering

Abstract

Some examples include sending, to a secure environment, coordinates for certain touch events made to a touchscreen of an electronic device. As one example, an import address table that is accessed by an event loop of the electronic device may be modified. For instance, only those touch events that are performed within the bounds of a user interface area may be diverted to the secure environment, and all touch events outside that area may continue to be identified, such as by using operating system libraries of the electronic device. In some cases, a checksum may be generated for the import address table using a cryptographic hash function. The checksum may allow a payment application and/or a payment processing system to determine whether an unauthorized modification of the import address table is present.