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    GARBAGE COLLECTION METHOD AND APPARATUS
    1.
    发明公开
    GARBAGE COLLECTION METHOD AND APPARATUS 审中-公开

    公开(公告)号：US20240232073A9

    公开(公告)日：2024-07-11

    申请号：US18363285

    申请日：2023-08-01

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Dong-Wook KANG ,  Gae-Il AN ,  Hong-Il JU

    IPC: G06F12/02

    CPC classification number: G06F12/0253 ,  G06F2212/7205

    Abstract: Disclosed herein are a garbage collection method and apparatus. The garbage collection method includes when an area dynamically allocated through a malloc( ) function or a new operator of a standard C library is deallocated through a free( ) function or a delete operator, inserting the deallocated area into a quarantine list, recording a base address and an end address of each of areas inserted into the quarantine list in a CSR_quarantined_chunks register, finding a physical address of a memory page used by a processor and searching data in the memory page for a value included in a quarantined area of the CSR_quarantined_chunks register, when a value included in the quarantined area is not present, setting a state flag bit of the register to 0, and deleting an area which the state flag bit is 0 from the quarantine list, and inserting the area into a free list.

    APPARATUS AND METHOD FOR VERIFYING INTEGRITY OF HARDWARE BOARD
    2.
    发明申请
    APPARATUS AND METHOD FOR VERIFYING INTEGRITY OF HARDWARE BOARD 有权

    公开(公告)号：US20230004680A1

    公开(公告)日：2023-01-05

    申请号：US17738524

    申请日：2022-05-06

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Yong-Je CHOI ,  Dae-Won KIM ,  Sang-Su LEE ,  Byeong-Cheol CHOI ,  Dong-Wook KANG ,  Ik-Kyun KIM ,  Yang-Seo CHOI

    IPC: G06F21/70 ,  G06F21/57

    Abstract: Disclosed herein are an apparatus and method for verifying the integrity of a hardware board. The apparatus includes one or more processors and execution memory for storing at least one program that is executed by the processors, wherein the program is configured to compare images of components arranged on a verification target board and a source board in a first image, obtained by photographing the verification target board, and in a second image prestored for the source board, as to whether images of the components are identical to each other, and compare first firmware extracted from the verification target board with second firmware of the source board, as to whether first firmware is identical to second firmware and verify integrity of the verification target board based on whether the images are identical to each other and on whether the pieces of firmware are identical to each other.

    GARBAGE COLLECTION METHOD AND APPARATUS
    5.
    发明公开
    GARBAGE COLLECTION METHOD AND APPARATUS 审中-公开

    公开(公告)号：US20240134790A1

    公开(公告)日：2024-04-25

    申请号：US18363285

    申请日：2023-07-31

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Dong-Wook KANG ,  Gae-Il AN ,  Hong-Il JU

    IPC: G06F12/02

    CPC classification number: G06F12/0253 ,  G06F2212/7205

    Abstract: Disclosed herein are a garbage collection method and apparatus. The garbage collection method includes when an area dynamically allocated through a malloc( ) function or a new operator of a standard C library is deallocated through a free( ) function or a delete operator, inserting the deallocated area into a quarantine list, recording a base address and an end address of each of areas inserted into the quarantine list in a CSR_quarantined_chunks register, finding a physical address of a memory page used by a processor and searching data in the memory page for a value included in a quarantined area of the CSR_quarantined_chunks register, when a value included in the quarantined area is not present, setting a state flag bit of the register to 0, and deleting an area which the state flag bit is 0 from the quarantine list, and inserting the area into a free list.

    APPARATUS AND METHOD FOR DETECTING VIOLATION OF CONTROL FLOW INTEGRITY
    6.
    发明申请
    APPARATUS AND METHOD FOR DETECTING VIOLATION OF CONTROL FLOW INTEGRITY 有权

    公开(公告)号：US20220269777A1

    公开(公告)日：2022-08-25

    申请号：US17518373

    申请日：2021-11-03

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Dong-Wook KANG ,  Dae-Won KIM ,  Ik-Kyun KIM ,  Sang-Su LEE ,  Jin-Yong LEE ,  Byeong-Cheol CHOI ,  Yong-Je CHOI

    IPC: G06F21/54 ,  G06F21/55 ,  G06F9/30

    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.

    DYNAMIC MEMORY MANAGEMENT APPARATUS AND METHOD FOR ALLOCATING/DEALLOCATING DYNAMIC MEMORY USING THE SAME
    8.
    发明公开
    DYNAMIC MEMORY MANAGEMENT APPARATUS AND METHOD FOR ALLOCATING/DEALLOCATING DYNAMIC MEMORY USING THE SAME 审中-公开

    公开(公告)号：US20240160565A1

    公开(公告)日：2024-05-16

    申请号：US18349673

    申请日：2023-07-10

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Hong-Il JU ,  Dong-Wook KANG ,  Gae-Il AN

    IPC: G06F12/02

    CPC classification number: G06F12/0292 ,  G06F2212/1052

    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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