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이종관 보안공학연구지원센터 2018 보안공학연구논문지 Vol.15 No.5
In this paper, I propose a cryptography system to conceal photograph data captured by an unmanned aerial vehicles (UAV), even though the enemy takes the UAV that fallen in an accident or the data communications between the UAV and the ground control system (GCS) are exposed to the enemy. The photograph data should be concealed because it could expose the reconnaissance and operational intentions if leaked to the enemy. The proposed system encrypts each photograph data with the hash value of the photograph data. The hash value is encrypted with public key of the GCS and added to the header part of the photograph data. It is impossible to decrypt the encrypted photograph data without private key of the GCS. I analyze the security of the proposed system under two cases; 1) the enemy takes the UAV and 2) the signal between UAV and GCS is exposed to the enemy. I verified that the proposed system efficiently conceals the photograph data. 본 논문은 무인항공기가 불의의 사고로 추락하여 적에게 수거되거나 지상통제소와의 통신과정에서 신호가 도·감청되더라도 무인항공기가 촬영했던 정보가 적에게 노출되지 않는 암호 시스템을 제안한다. 무인항공기가 촬영했던 정보가 적에게 유출되면 아군의 정찰 및 작전의도가 노출될 수 있기 때문에 무인항공기의 영상 정보는 은닉되어야 한다. 제안하는 시스템은 촬영 영상별 해쉬값을 암호키로 사용하여 영상정보를 암호화한다. 암호키는 공개키 방식으로 암호화되어 각 영상의 헤더에 저장된다. 따라서 지상통제소에 저장되어 있는 개인키가 없다면 영상 정보를 복호화할 수 없다. 제안하는 시스템을 무인항공기가 적에게 수거되었을 경우와 무인항공기와 지상통제소간의 정보교환이 도·감청된 경우에 대해 분석한 결과 영상 정보를 효과적으로 은닉할 수 있음을 확인하였다.
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전술 군집 드론 네트워크를 위한 중앙집권식 그룹키 관리 기법
이종관,신규용,김경민 한국군사과학기술학회 2018 한국군사과학기술학회지 Vol.21 No.6
Recently, drones have been used in various field to overcome time and space limitations. However, single drone still has a lot of restriction on transportation wight and travel time. Therefore many studies have been conducted to increase the utilization by swarm of drones. Many things should be additionally considered in order to operate swarming drones securely. Especially the group key management is a challenging research topic in tactical domain due to existence of adversary that has anti-drone skill. In this paper, we proposed an efficient group key management scheme for tactical swarming drone networks where an adversary equipped with anti-drone skills exists. The group key can be updated with a small number of message exchange compared to other convenience schemes. The numerical and simulation results demonstrate that the proposed scheme manages the group key efficiently and securely.
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Association of Bovine CSRP3 and ACOX1 Genes with Carcass and Meat Quality Traits
이종관,조용민,이준헌,Lee, Jong-Kwan,Cho, Yong-Min,Lee, Jun-Heon Institute of Agricultural Science 2010 Korean Journal of Agricultural Science Vol.37 No.2
There is no investigation has yet been conducted for ACOX1 and CSRP3 gene polymorphisms in Korean cattle (Hanwoo), and their associations with carcass and meat quality traits. In this study, SNPs in ACOX1 and CSRP3 genes were identified and their associations with carcass and meat quality traits were investigated in 227 Hanwoo animals. Two SNPs (g.224G> A and g.19491G>A) in ACOX1 gene and one SNP (g.14859C>T) in CSRP3 gene were identified in Hanwoo and sequence analysis indicated that these SNPs were located in the coding regions. The allele frequencies of ACOX1 g.224G>A and g.19491G>A SNPs were 0.57, 0.43, and 0.56 and 0.44, respectively, For CSRP3 g.14859C>T polymorphism, the C and T allele frequencies were 0.64 and 0.36, respectively. The Hanwoo cattle were used to detect PCR-RFLP patterns for estimating the allele frequencies. Single marker association analyses were performed between genotype of each SNP, and carcass and meat quality association traits to evaluate the relationships in Hanwoo. The g.224G>A SNP genotypes of ACOX1 gene, which was significantly associated with meat quantity grade at slaughter (P<0.03) and backfat thickness tended to be greater (P=0.06) in Hanwoo. The previously identified g.14859C>T SNP was used in this study and the obtained genotype and allele frequencies are almost similar with the previous results reported by Bhuiyan et al. (2007). However, no significant association was found between g.19491G>A SNP in the ACOX1 and g.14859C>T SNP genotypes of CSRP3 gene and considered carcass and meat quality traits. In conclusion, the information on the identified SNPs in CSRP3 and ACOX1 genes could be useful for further association study and haplotype analysis for the development of carcass and meat quality traits in Hanwoo.
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군집 드론 네트워크에서 네트워크 결합을 위한 동적 슬롯 재할당 기법
이종관,이민우,Lee, Jong-Kwan,Lee, Minwoo 한국정보통신학회 2019 한국정보통신학회논문지 Vol.23 No.2
본 논문에서는 네트워크가 수시로 결합, 분리되는 군집 드론 네트워크를 위한 효과적인 동적 슬롯 재할당 기법을 제안한다. 네트워크별 리더 노드는 드론들간의 주기적인 정보교환을 통해 이웃 네트워크의 슬롯할당정보를 파악한다. 해당 정보를 이용하여 리더 노드는 네트워크가 결합되는 경우, 경쟁방식을 적용했을 때의 슬롯할당 성공확률을 기준으로 경쟁 또는 비경쟁방식으로 슬롯을 재할당한다. 제안하는 기법에서 비경쟁방식으로 슬롯을 재할당하면 충돌없이 슬롯을 재할당하며 네트워크 규모와 무관하게 항상 동일한 성능을 보장할 수 있다. 그리고 경쟁방식을 적용하면 네트워크 결합에 의해 재할당해야하는 슬롯의 개수를 최소화할 수 있다. 실험을 통해 제안하는 기법이 동적인 군집 드론 네트워크에서 경쟁 방식에 비해 항상 우수하거나 최소한 동일한 성능을 보임을 확인한다. In this paper, we propose an efficient dynamic slot re-assignment scheme for swarming drone networks in which networks members merged and split frequently. The leader drone of each network recognizes the slot allocation information of neighbor networks by periodic information exchange among between the drones. Using the information, the leader drone makes a decision how to reallocate the slots between members in case of network merge. The non-competitive method in the proposed scheme can re-assign the slots without any slot collision and shows always superior performance than competitive scheme. The competitive method in the proposed scheme reduces the number of slots that should be re-assigned in case of network merge. The experimental performance analysis shows that the proposed scheme performs better or at least equal to the performance of the competitive scheme in a swarming drone network.
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