公开(公告)号：US11463880B2

公开(公告)日：2022-10-04

申请号：US16716055

申请日：2019-12-16

Applicant: Korea Advanced institute of Science and Technology

Inventor： Yongdae Kim ,  Hongil Kim ,  Jiho Lee ,  Eunkyu Lee

IPC: H04W12/108 ,  H04L69/22 ,  G06F11/36 ,  H04W12/106 ,  H04W12/122 ,  G06K9/62 ,  H04B1/00 ,  H04L9/32

Abstract: A security analysis method for a control plane and a system therefor are disclosed. The method includes generating a test case for a security property unsuitable for a control plane operation, transmitting the generated test case to target equipment and receiving a response of the control plane for the test case from the target equipment, and diagnosing security for the security property of the target equipment by analyzing the received response. The generating includes generating the test case for the security property by modulating a value of a specific field in a control plane protocol header into a value unsuitable for an operation on standards.

公开(公告)号：US20240223073A1

公开(公告)日：2024-07-04

申请号：US18395263

申请日：2023-12-22

Applicant: SEMES CO., LTD. ,  Korea Advanced Institute Of Science And Technology

Inventor： Aixian Zhang ,  Junghwan Lee ,  Jaehyun Kim ,  Jiho Lee ,  Gyuhyeong Cho

IPC: H02M1/34 ,  H02M3/158 ,  H05H1/46

CPC classification number: H02M1/346 ,  H02M3/158 ,  H05H1/4645

Abstract: Provided is a snubber circuit. The snubber circuit may include a first snubber diode connected to a first node connected to a DC-DC converter, a snubber capacitor connected between the first snubber diode and a second node connected to the DC-DC converter, a snubber voltage source connected to the first node, a snubber inductor connected to a third node between the first snubber diode and the snubber capacitor, and a second snubber diode connected between the snubber inductor and the snubber voltage source.

公开(公告)号：US12010650B2

公开(公告)日：2024-06-11

申请号：US17451123

申请日：2021-10-15

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Yongdae Kim ,  CheolJun Park ,  Hojoon Yang ,  Sangwook Bae ,  Mincheol Son ,  Jiho Lee ,  Hongil Kim

IPC: H04W68/02 ,  H04W56/00

CPC classification number: H04W68/02 ,  H04W56/001

Abstract: A fake base station (FBS) redirection attack method using unicast message injection in a long term evolution (LTE) wireless section and a system thereof are provided. The FBS redirection attack method includes synchronizing with a signal of a commercial base station connected with a target device being an attack target, transmitting an international mobile subscriber identity (IMSI) paging message to the target device using an IMSI of the target deice, and injecting a unicast message including a frequency of an FBS into the target device, before a base station re-access process is completed in the target device which decodes the IMSI paging message.

公开(公告)号：US20220124673A1

公开(公告)日：2022-04-21

申请号：US17451123

申请日：2021-10-15

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Yongdae Kim ,  CheolJun Park ,  Hojoon Yang ,  Sangwook Bae ,  Mincheol Son ,  Jiho Lee ,  Hongil Kim

IPC: H04W68/02 ,  H04W56/00

Abstract: A fake base station (FBS) redirection attack method using unicast message injection in a long term evolution (LTE) wireless section and a system thereof are provided. The FBS redirection attack method includes synchronizing with a signal of a commercial base station connected with a target device being an attack target, transmitting an international mobile subscriber identity (IMSI) paging message to the target device using an IMSI of the target deice, and injecting a unicast message including a frequency of an FBS into the target device, before a base station re-access process is completed in the target device which decodes the IMSI paging message.