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The 1st Chinese Conference on Trusted Computing and information Security

作者： zhang ya-juan. zhu yue-fei, huang qiu-sheng network engineering department, information engineering university, zhengzhou 450002, henan, china

＜正＞ An identity-based key-exchange protocol using a bilinear map is proposed and it is proved SK-secure （session key secure） in the AM （authenticated links adversarial model） provided the BDDH （bilinear Diffie-Hellmen） assumption is correct. Then we apply the signature-based authenticator to our protocol and obtain an identity-based key-exchange protocol that is SK-secure in the UM （unauthenticated links adversarial model） provided the BDDH assumption is correct.

关键词： AM UM KE protocol authenticator BDDHassumption

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Paired quasi-periodic pulsations of hard X-ray emission in a solar flare

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Science china(Physics,Mechanics & Astronomy) 2023年第5期66卷 195-206页

作者： Hai-sheng Zhao Dong Li Shao-Lin Xiong yan-qiu zhang yang Su Wei Chen Yi Zhao Xiao-Bo Li Jia-Cong Liu Wen-Xi Peng Rui Qiao Xin-Qiao Li Xiang-yang Wen Li-Ming Song Shi-Jie Zheng Xin-Ying Song Xiao-Yun Zhao yue huang Shuang-Nan zhang Shuo Xiao Ce Cai Zheng-Hua An Can Chen Gang Chen Wei Chen yan-Qi Du Min Gao Ke Gong Dong-ya Guo Zhi-Wei Guo Jian-Jian He Bin Li Chao Li Chao-yang Li Gang Li Jian-Hui Li Lu Li Qing-Xin Li yan-Guo Li Jing Liang Xiao-Hua Liang Jin-Yuan Liao Xiao-Jing Liu ya-Qing Liu Qi Luo Xiang Ma Bin Meng Ge Ou Dong-Li Shi Jing-yan Shi Gong-Xing Sun Xi-Lei Sun You-Li Tuo Chen-Wei Wang Hui Wang Jin Wang Jin-Zhou Wang Ping Wang Wen-Shuai Wang Hong Wu sheng-Lun Xie yan-Bing Xu Yu-Peng Xu Wang-Chen Xue sheng yang Min yao Jian-Ying Ye Qi-Bin Yi Chao-yue zhang Da-Li zhang Fan zhang fei zhang Hong-Mei zhang Kai zhang Peng zhang Xiao-Lu zhang Zhen zhang Guo-Ying Zhao Shi-Yi Zhao Chao Zheng Xing Zhou yue zhu Key Laboratory for Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China university of Chinese Academy of Sciences Beijing 100049China department of Astronomy Beijing Normal UniversityBeijing 100875China School of Computing and Artificial Intelligence Southwest Jiaotong UniversityChengdu 611756China Physics and Space Science College China West Normal UniversityNanchong 637002China Key Laboratory of Stellar and Interstellar Physics and department of Physics Xiangtan UniversityXiangtan 411105China Institute of Astrophysics Central China Normal UniversityWuhan 430079China School of Physics Changchun University of Science and TechnologyChangchun 130022China College of Physics and engineering Qufu Normal UniversityQufu 273165China College of Physics Sciences&Technology Hebei UniversityBaoding 071002China

We investigate high time resolution data obtained by the Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor(GECAM)during the flare event on 2022 April 21 at 01:52 *** subpeaks with durations of 4-6 s have been detected in the hard X-ray precursor phase,and the key feature is that they appear in pairs and seem like double-peak *** subpeaks are rarely observed in hard X-ray band and confirmed by the microwave obtained by Nobeyama Radio Polarimeters(NoRP)and Radio Solar Telescope network(RSTN).While an exponential function can describe the continuum component of the time profile from the precursor to part of the impulsive *** periods of quasi-periodic pulsations(QPPs)are detected to be about 7.3 and 12.8 s for the precursor and impulsive phase,respectively,with at least 95%confidence *** paired QPPs are assumed to be double-peak QPPs and then the scenario of current loop coalescence model is found to be in good agreement with our *** precursor phase can be interpreted as the oscillating coalescence of two islands,while the impulsive phase can be interpreted as more islands to coalesce one by one to form larger islands.

关键词： solar flare QPPs loop coalescence circular-ribbon flare

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