Electronics and Telecommunications Research Institute

Gae-Il An

Hong-Il Ju

Dong-Wook Kang

Hyeok-Chan Kwon

Sok-Joon Lee

Sin-Hyo Kim

Yang-Seo Choi

Do-Young Chung

Jong-Sik Moon

Ki-Young Kim

Bo-Heung Chung

Byeong-Cheol Choi

Byung-Ho Chung

Sungwon Yi

Jong-Hyun Kim

Dae-Hee Seo

Dong-Il Seo

Sun-Hee Lim

Won-Jun Song

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.

Garbage collection method and apparatus

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.

Dynamic memory management apparatus and method for allocating/deallocating dynamic memory using the same

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.

Dynamic memory management apparatus and method and computer-readable storage medium for the same

Disclosed herein are an apparatus and method for transmitting fuzzing data. The apparatus may include 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 may collect context information pertaining to a one-way fuzzing target device that uses a one-way protocol, may determine the execution state of the one-way fuzzing target device by analyzing the context information, and may transmit fuzzing data to the one-way fuzzing target device based on the result of determination of the execution state.

Apparatus and method for transmitting fuzzing data for one-way protocol software fuzzing

Disclosed herein are a method for automated fuzzing for an IoT device based on automated reset and an apparatus using the same. The method includes loading, by the apparatus, a fuzzing agent into an IoT device based on firmware; monitoring, by the apparatus, the status of processing of fuzzing input by the IoT device based on the fuzzing agent; collecting, by the apparatus, fuzzing data corresponding to occurrence of a crash based on hooking using the fuzzing agent when the crash occurs in the IoT device; and resetting, by the apparatus, the IoT device based on the fuzzing agent.

Method for automated fuzzing for IoT device based on automated reset and apparatus using the same

An apparatus and method for collecting the radio frequency (RF) feature of a wireless device in a wireless communication apparatus are disclosed herein. The RF feature extraction unit adds a tag having a unique value to a received radio signal, and extracts RF feature information from the radio signal. The MAC information extraction unit extracts the source MAC address and tag information of a MAC protocol frame from the received radio signal, and then removes the added tag. The tag comparison unit selects an source MAC address and RF feature information, when the tags have the same value, from the RF feature information and tag information from the RF feature extraction unit and the source MAC address and tag information from the MAC information extraction unit. The RF feature storage unit stores the selected source MAC address and RF feature information.

Apparatus and method for collecting radio frequency feature of wireless device in wireless communication apparatus

An apparatus and a method for identifying a rogue device having a media access control (MAC) address counterfeited/forged when a wireless intrusion prevention system controls an access to an access point (AP) and a wireless terminal which are not applied are disclosed. The apparatus includes: a sensor unit configured to collect MAC addresses, RSSI values, and RF feature values based on RF signals of wireless terminals; an RF feature database configured to store the collected MAC addresses, RSSI values, and RF feature values; and a terminal identification unit configured to identify whether a MAC of any one of the wireless terminals is forged by comparing information of the RF feature database with the RSSI value and the RF feature value of any one of the wireless terminals according to a MAC verification request of any one of the wireless terminals from the sensor unit.

Apparatus and method for identifying rogue device

Disclosed herein is an apparatus for analyzing the vulnerability of a wireless local area network (LAN). The apparatus includes a collection unit, an analysis unit, and an attack unit. The collection unit collects packets transmitted and received in a wireless LAN service. The analysis unit analyzes the state of a network using the collected packets. The attack unit makes a wireless attack against an attack target using the state of the network, and controls the mode switching of a device driver based on an operating mode.

Apparatus for analyzing vulnerability of wireless local area network

The present invention relates to an agent apparatus and method for sharing anonymous identifier-based security information among security management domains. A plurality of security information sharing agent apparatuses respectively located in a plurality of security management domains and configured to collect security information and transmit collected security information to outside of the security management domains. Each security information sharing agent apparatus includes an identifier conversion unit for converting real name identifier-based security information into anonymous identifier-based security information by converting a real name identifier included in the security information into an anonymous identifier, and a security information communication unit for transmitting the anonymous identifier-based security information obtained by the identifier conversion unit to outside of a corresponding security management domain so that security information is shared among the plurality of security management domains.

Growing community of inventors

Daejeon, South Korea

Gae-Il An