Interception of touch pad events for handling in a secure environment
US9619802B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2015 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Dec 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/145
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
Disclosed is a technique for identifying touch events performed on a mobile device within a secure environment. The technique can involve diverting coordinates for certain touch events to a secure environment in a payment application, for example, by modifying an import address table (e.g., implementing a “hook”) that is accessed by an event loop of the mobile device. Generally, only those touch events that are performed within the bounds of a user interface area are diverted to the secure environment, and all touch events outside that area continue to be identified using the operating system libraries of the mobile device. A checksum may be generated for the import address table using a cryptographic hash function. The checksum allows the payment application or a payment processing system to determine whether an unauthorized modification of the import address table is present.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.