C_(60)[RuHCl(CO)(PPh_3)]_3配合物的合成和表征

国家自然科学基金;教育部博士点基

Mathematics and Computer Science :Proceedings of Annual Workshop on Mathematics and Computer Science, March 25, 2014, JOSAI UNIVERSITY

In cryptographic applications, there is often a need for protecting privacy of users besides integrity of message transmitted in a public channel. In information-theoretic (or unconditional) security setting, a model of GA-codes (Group Authentication codes) which can ensure both the integrity of the message and the anonymity for senders was proposed. In this model, there are multiple senders and a single receiver. And, one of the senders can generate an authenticated message anonymously. That is, the receiver can verify the validity of the authenticated message, but he cannot specify the sender of it. In GA-codes, it is assumed that both the sender and receiver are honest. However, it may be unnatural and an ideal assumption in several situations. In this paper, we remove the assumption and newly propose a formal definition (i.e., the model and security definitions) of GA2-codes (Group Authentication codes with Arbitration). In GA2-codes, it is assumed that the sender or the receiver can be dishonest and thus a dispute between them may occur. To resolve such a dispute, we introduce an honest arbiter in GA2-codes. This model can be considered as natural extension of that of both the GAcodes and the traditional A2-codes (Authentication codes with Arbitration). In addition, we propose a construction which meets our security definition of GA2-codes by using polynomials over finite fields. We also consider the case that the arbiter is not always honest and call this model GA3-codes (GA2-codes with protection against arbiter’s attack), which is further extension of GA2-codes and be naturally considered from a similar setting of the traditional A3-codes (A2-code with protection against arbiter’s attack).Mathematics and Computer Science : Proceedings of Annual Workshop on Mathematics and Computer Science, held at Josai University on March 25 in 2014 / edited by Masatoshi IIDA, Manabu INUMA, Kiyoko NISHIZAW

Synthesis and Characterization of Multiple Metal Complexes of Fullerene C_(60) [CoCl(PPh_3)]_n

合成了富勒烯多金属配合物C60 [CoCl(PPh3 ) ]n(n =2 ,4 ,6 ,8) ,采用元素分析、IR、XPS进行表征 ,该系列配合物为首次被合成Multiple metal complexes of fullerene C 60 [CoCl(PPh 3)] n are prepared and characterized by elemental analysis, UV Vis, FT IR and XPS.高等学校博士学科点专项基金 (980 384 10 ) ;; 福建省自然科学基金 (E0 110 0 0 2 );; 厦门大学 校级自选课题基金 (0 0 4 2 Y0 70 16 )资助项

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Youji Kawaguchi, Oral History (1st, 2): The Pioneering Magazine of Consumer Games

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