Z has been granted a patent for a file protection method involving extracting and classifying classes from an executable file, adding loading and integrity codes to ensure secure loading and verification, and regenerating the file. This innovative method aims to enhance computer apparatus security. GlobalData’s report on Z gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Z, was a key innovation area identified from patents. Z's grant share as of February 2024 was 46%. Grant share is based on the ratio of number of grants to total number of patents.

File protection method for executable files using loading and integrity codes

Source: United States Patent and Trademark Office (USPTO). Credit: Z Holdings Corp

A recently granted patent (Publication Number: US11921874B2) discloses a file protection method for a computer apparatus that involves extracting classes from an executable file, classifying them into groups, adding loading and integrity codes to specific class groups, and regenerating the package file. The method includes designating protected and non-protected classes, encrypting protected classes, adding loading code to a static initialization function, and adding integrity verification code to detect modifications in the classes. Additionally, the method involves controlling another computer apparatus to access integrity information and add protection code to prevent disassembly, decompilation, or debugging.

Furthermore, the patent describes a process where a first class group is loaded into memory, encrypted class groups are restored using loading codes, and executable file information is designated for recognition by a class loader. The method also includes verifying the integrity of class groups using integrity codes and terminating execution if any compromise is detected. The patent also covers a computer apparatus with processing circuitry to execute the file protection method, including loading, restoring, verifying integrity, and terminating execution based on the verification results, ensuring secure file execution and protection against unauthorized modifications.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.