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公开(公告)号：US12292828B2
公开(公告)日：2025-05-06
申请号：US18349673
申请日：2023-07-10
Inventor： Hong-Il Ju , Dong-Wook Kang , Gae-Il An
IPC: G06F12/02
Abstract: Disclosed herein are a dynamic memory management apparatus and a method for allocating/deallocating dynamic memory. The apparatus includes actual memory configured to allocate or deallocate a heap, virtual memory configured to set/store heap allocation information at a virtual address mapped to an actual address that is a body start address of a heap area of the actual memory, and a dynamic memory manager configured to process a memory allocation or deallocation request and the virtual memory, wherein the heap allocation information includes access authority information for storing information indicating whether a heap at an actual address is allocated or deallocated, and count information increased whenever a heap is allocated, and the dynamic memory manager is configured to return an address pointer including an actual address of a heap allocated to the actual memory and heap allocation information to the program, and process a heap deallocation or reallocation request.
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公开(公告)号：US12039035B2
公开(公告)日：2024-07-16
申请号：US17518373
申请日：2021-11-03
Inventor： Dong-Wook Kang , Dae-Won Kim , Ik-Kyun Kim , Sang-Su Lee , Jin-Yong Lee , Byeong-Cheol Choi , Yong-Je Choi
CPC classification number: G06F21/54 , G06F9/30058 , G06F9/30101 , G06F21/554 , G06F21/556
Abstract: Disclosed herein are an apparatus and method for detecting violation of control flow integrity. The apparatus includes memory for storing a program and a processor for executing the program, wherein the processor multiple branch identifier registers to which identifiers of branch targets are written, a set branch identifier instruction configured to command an identifier of a branch target to be written to a branch identifier register at a predetermined sequence number, among the multiple branch identifier registers, and a check branch identifier instruction configured to command a signal indicating detection of a control flow hijacking attack to be issued based on whether a value written to the branch identifier register at the predetermined sequence number is identical to a value of an identifier of a branch target at the predetermined sequence number, wherein the program detects whether a control flow is hijacked based on the multiple branch identifier registers.
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3.发明授权公开(公告)号：US11502870B2
公开(公告)日：2022-11-15
申请号：US17077702
申请日：2020-10-22
Inventor： Joong-Yong Choi , Dong-Wook Kang , Dae-Won Kim , Sang-Woo Lee , Jin-Yong Lee , Boo-Sun Jeon , Bo-Heung Chung , Hong-Il Ju , Byeong-Cheol Choi
Abstract: Disclosed herein are a method for managing an access control list based on an automotive Ethernet and an apparatus for the same. The method includes analyzing a new access control rule that is input to a vehicle in which the automotive Ethernet is applied, searching for any one target unit to manage the new access control rule in consideration of at least one of a destination and an application target corresponding to the new access control rule, and storing the new access control rule by transmitting a storage request message corresponding to the new access control rule to the target unit.
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Patent Agency Ranking
4.发明授权公开(公告)号：US12061802B2
公开(公告)日：2024-08-13
申请号：US18048344
申请日：2022-10-20
Inventor： Hong-Il Ju , Dong-Wook Kang , Gae-Il An , Bo-Heung Chung , Byeong-Cheol Choi
CPC classification number: G06F3/0622 , G06F3/0631 , G06F3/0673 , G06F12/1458 , G06F21/78
Abstract: Disclosed herein are a dynamic memory management apparatus and method and a computer-readable storage medium for the same. The dynamic memory management method includes defining a shadow area mapped to a memory area, setting a coloring value in the shadow area, and permitting or denying access to the memory area based on the coloring value when accessing the memory area.
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公开(公告)号：US20230142407A1
公开(公告)日：2023-05-11
申请号：US18049523
申请日：2022-10-25
Inventor： Dae-Won Kim , Sang-Su Lee , Yong-Je Choi , Byeong-Cheol Choi , Dong-Wook Kang , Yang-Seo Choi
CPC classification number: G06F21/572 , G06F9/3005 , G06F9/3836 , G06F9/345
Abstract: Disclosed herein are an apparatus for analyzing non-informative firmware and a method using the apparatus. The method includes detecting a target instruction for firmware analysis in a memory map in non-informative firmware, generating an analysis list based on memory map information corresponding to the target instruction, and generating a visualized analysis result corresponding to the firmware by grouping the entries of the analysis list by preset reference bytes.
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公开(公告)号：US09384007B2
公开(公告)日：2016-07-05
申请号：US14142458
申请日：2013-12-27
Inventor： Dong-Wook Kang
CPC classification number: G06F9/4401 , G06F9/4406 , G06F9/45533 , G06F9/45558 , G06F2009/45575
Abstract: The present invention relates to a memory virtualization-based snapshot boot apparatus and method. The memory virtualization-based snapshot boot apparatus includes hardware unit including a processor, memory, and storage, the storage storing status information corresponding to an operating system, and a Virtual Machine Monitor (VMM) operated by the processor and configured to operate the operating system by loading the status information into the memory. In accordance with the present invention, technology for loading only a part of a snapshot image and booting a system is implemented using virtualization technology, thus shortening the booting time of the system.
Abstract translation: 本发明涉及基于存储器虚拟化的快照启动装置和方法。 基于存储器虚拟化的快照引导装置包括包括处理器，存储器和存储器的硬件单元，与操作系统相对应的存储状态信息，以及由处理器操作的虚拟机监视器（VMM），并被配置为操作操作系统 通过将状态信息加载到存储器中。 根据本发明，使用虚拟化技术实现仅加载一部分快照图像和引导系统的技术，从而缩短系统的启动时间。
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公开(公告)号：US12223050B2
公开(公告)日：2025-02-11
申请号：US18049523
申请日：2022-10-25
Inventor： Dae-Won Kim , Sang-Su Lee , Yong-Je Choi , Byeong-Cheol Choi , Dong-Wook Kang , Yang-Seo Choi
Abstract: Disclosed herein are an apparatus for analyzing non-informative firmware and a method using the apparatus. The method includes detecting a target instruction for firmware analysis in a memory map in non-informative firmware, generating an analysis list based on memory map information corresponding to the target instruction, and generating a visualized analysis result corresponding to the firmware by grouping the entries of the analysis list by preset reference bytes.
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公开(公告)号：US11516194B2
公开(公告)日：2022-11-29
申请号：US16945120
申请日：2020-07-31
Inventor： Dae-Won Kim , Dong-Wook Kang , Sang-Woo Lee , Jin-Yong Lee , Boo-Sun Jeon , Bo-Heung Chung , Hong-Il Ju , Byeong-Cheol Choi , Joong-Yong Choi
Abstract: Disclosed herein are an in-vehicle network apparatus and method. The in-vehicle network apparatus includes one or more processors and executable memory for storing at least one program executed by the one or more processors. The at least one program is configured to verify the integrity of software stored in advance in the executable memory, to generate a key table by sharing authentication information with a communication target, and to exchange an encrypted message with the communication target using the key table.
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