At the invitation of CAFIU,a delegation of 7 members of the Friedrich Ebert Foundation(FES),headed by Mr.Martin Schulz,Chairman of the Foundation,Former President of SPD,and Former President of European Parliament,vis...At the invitation of CAFIU,a delegation of 7 members of the Friedrich Ebert Foundation(FES),headed by Mr.Martin Schulz,Chairman of the Foundation,Former President of SPD,and Former President of European Parliament,visited China from 2nd to 7th February.During the delegation's visit in Beijing,Mr.Li Hongzhong,Member of the Political Bureau of the CPC Central Committee and Vice-Chairperson of the Standing Committee of the National People's Congress of China,met with the delegation.展开更多
On March 21st,Mr.Ai Ping,Vice-President of CAFIU,met in Bejing with a 6-member delegation from the US Word4Asia led by Dr.Gene Wood,Chief Executive Officer of Word4Asia.Mme.Xiao Ningning,Deputy Secretary-General of Ch...On March 21st,Mr.Ai Ping,Vice-President of CAFIU,met in Bejing with a 6-member delegation from the US Word4Asia led by Dr.Gene Wood,Chief Executive Officer of Word4Asia.Mme.Xiao Ningning,Deputy Secretary-General of China NGO Network for International Exchanges,Mr.Gu Chuanyong,Vice-Chair of Board of the Amity Foundation,and Mme.She Hongyu,Deputy Secretary-General of the Amity Foundation,attended the meeting.The two sides exchanged views on deepening people-to-people exchanges and cooperation between China and the United States and on the preparation of the 5th"Amity Cup"International Table Tennis Charity Competition.展开更多
On March 13th,CAFIU Vice-President Liu Hongcai met the delegation from(JCP)Japan-China Friendship Association.The two sides exchanged views on people-to-people and youth exchanges between the two countries.Vice-Presid...On March 13th,CAFIU Vice-President Liu Hongcai met the delegation from(JCP)Japan-China Friendship Association.The two sides exchanged views on people-to-people and youth exchanges between the two countries.Vice-President Liu Hongcai said that civil society organisations in China and Japan should persist in serving as bridges for official communication and contributing civil society efforts to promote China-Japan friendship.展开更多
In Niger,a country at the southern end of the Sahara Desert,the announcement of the arrival of wushu teachers attracted a large number of people from near and far,despite a tiring journey.Curious and covetous glances ...In Niger,a country at the southern end of the Sahara Desert,the announcement of the arrival of wushu teachers attracted a large number of people from near and far,despite a tiring journey.Curious and covetous glances testify to the attraction of this oriental culture.展开更多
At the invitation of CAFIU,the delegation of 15 renowned sinologists from 15 countries including Iran,Spain,and Mexico visited China from September 4th to 15th.
On November 28,a delegation of Russian scholars led by Victor Larin,Academician of the Russian Academy of Sciences and Director at the Far Eastern Branch,visited the Xi Jinping Thought on Diplomacy Studies Centre.Yu J...On November 28,a delegation of Russian scholars led by Victor Larin,Academician of the Russian Academy of Sciences and Director at the Far Eastern Branch,visited the Xi Jinping Thought on Diplomacy Studies Centre.Yu Jiang,CIIS Vice President and Full-Time Deputy Secretary-General of Xi Jinping Thought on Diplomacy Studies Centre,had in-depth exchanges with Russian scholars on the significance and practice of Xi Jinping Thought on Diplomacy and China-Russia relations.展开更多
Portable communication systems can provide mobile users with global roaming services. Recently, Youn and Lim proposed a delegation-based authentication protocol which achieves unlinkability for secure roaming services...Portable communication systems can provide mobile users with global roaming services. Recently, Youn and Lim proposed a delegation-based authentication protocol which achieves unlinkability for secure roaming services. This paper indicates that there are two drawbacks in Youn and Lim＇s protocol： 1） the synchronization problem will lead to a fail in on-line authentication; and 2） the exhaustive search puts a heavy burden on the off-line authentication process. Moreover, based on Youn and Lim＇s protocol, a remedy is proposed to address these problems. It is worthwhile to note that the proposed remedy not only keeps the original advantages but also enhances the security and performance.展开更多
Grid security infrastructure （GSI） provides the security in grids by using proxy certificates to delegate the work of authentication. At present, revocation proxy certificate has two kinds of methods, one is using c...Grid security infrastructure （GSI） provides the security in grids by using proxy certificates to delegate the work of authentication. At present, revocation proxy certificate has two kinds of methods, one is using certificate revocation list （CRL） and the other is giving the certificate a short period of validity. However, when a lot of certifications are revoked, CRL will be the burden in the system. If the certificate has a short period of validity, entities should be often updating the certificate. In this paper, we propose a scheme for proxy certificate revocation using hash tree. Our scheme only needs hash value comparisons to achieve the purpose of certificate revocation. Previous two methods have to wait the expiration of the certificate. Therefore, our scheme is more flexible than previous methods.展开更多
Mobile agent technology is promising for e-commerce and distributed computing applications due to its properties of mobility and autonomy. One of the most security-sensitive tasks a mobile agent is expected to perform...Mobile agent technology is promising for e-commerce and distributed computing applications due to its properties of mobility and autonomy. One of the most security-sensitive tasks a mobile agent is expected to perform is signing digital signatures on a remote untrustworthy service host that is beyond the control of the agent host. This service host may treat the mobile agents unfairly, i.e. according to its’ own benefit rather than to their time of arrival. In this research, we present a novel protocol, called Collusion-Resistant Distributed Agent-based Signature Delegation (CDASD) protocol, to allow an agent host to delegate its signing power to an anonymous mobile agent in such a way that the mobile agent does not reveal any information about its host’s identity and, at the same time, can be authenticated by the service host, hence, ensuring fairness of service provision. The protocol introduces a verification server to verify the signature generated by the mobile agent in such a way that even if colluding with the service host, both parties will not get more information than what they already have. The protocol incorporates three methods: Agent Signature Key Generation method, Agent Signature Generation method, Agent Signature Verification method. The most notable feature of the protocol is that, in addition to allowing secure and anonymous signature delegation, it enables tracking of malicious mobile agents when a service host is attacked. The security properties of the proposed protocol are analyzed, and the protocol is compared with the most related work.展开更多
At the invitation of CAFIU,a 6-member delegation of Members of European Parliament(MEP)led by Mr.István Ujhelyi,Vice-Chair of the European Parliament Committee on Transport and Tourism(TRAN),and former Deputy Spe...At the invitation of CAFIU,a 6-member delegation of Members of European Parliament(MEP)led by Mr.István Ujhelyi,Vice-Chair of the European Parliament Committee on Transport and Tourism(TRAN),and former Deputy Speaker of the Hungarian National Assembly visited China on June 17-20,2015.In Beijing,Mr.Qi Xuchun,Vice-Chairman of展开更多
At the invitation of CAFIU,a 14-member neighboring NGO delegation composed of representatives from Bangladesh,India,Indonesia and the Philippines visited China’s Beijing and Chengdu from July 7 to 16,2015.CAFIU Deput...At the invitation of CAFIU,a 14-member neighboring NGO delegation composed of representatives from Bangladesh,India,Indonesia and the Philippines visited China’s Beijing and Chengdu from July 7 to 16,2015.CAFIU Deputy Secretary-General Liu Kaiyang accompanied the delegation to Chengdu.As a CAFIU staff member,I had the honor to accompany the展开更多
New challenges are introduced when people try to build a general-purpose mobile agent middleware in Grid envi- ronment. In this paper, an instance-oriented security mechanism is proposed to deal with possible security...New challenges are introduced when people try to build a general-purpose mobile agent middleware in Grid envi- ronment. In this paper, an instance-oriented security mechanism is proposed to deal with possible security threats in such mobile agent systems. The current security support in Grid Security Infrastructure (GSI) requires the users to delegate their privileges to certain hosts. This host-oriented solution is insecure and inflexible towards mobile agent applications because it cannot prevent delegation abuse and control well the diffusion of damage. Our proposed solution introduces security instance, which is an en- capsulation of one set of authorizations and their validity specifications with respect to the agent’s specific code segments, or even the states and requests. Applications can establish and configure their security framework flexibly on the same platform, through defining instances and operations according to their own logic. Mechanisms are provided to allow users delegating their identity to these instances instead of certain hosts. By adopting this instance-oriented security mechanism, a Grid-based general-purpose MA middleware, Everest, is developed to enhance Globus Toolkit’s security support for mobile agent applications.展开更多
The WFO Technical Forum 2009 (WTF),sponsored by World Foundrymen Organization,organized by Czech Foundrymens Society,was held on the 1st,2nd and 3rd June 2009,at the Hotel Voronez in Brno,Czech Republic. The 4 day... The WFO Technical Forum 2009 (WTF),sponsored by World Foundrymen Organization,organized by Czech Foundrymens Society,was held on the 1st,2nd and 3rd June 2009,at the Hotel Voronez in Brno,Czech Republic. The 4 days included technical presentations,social events and the very important Ph.D conference. During the event there were the General Assembly bringing together the organizations members from around the world,and an exhibition,supported by 34 world's leading foundry based companies. In addition the event coincided with the Czech Foundrymens Society Foundry Days now in its 46th year.……展开更多
At the invitation of the Chinese Association for International Understanding(CAFIU),a 6-member delegation of Civic Association "Polish House",headed by the Secretary of its Board Mr.Tadeusz Gajewski,visited ...At the invitation of the Chinese Association for International Understanding(CAFIU),a 6-member delegation of Civic Association "Polish House",headed by the Secretary of its Board Mr.Tadeusz Gajewski,visited Beijing and Hunan Province from December 1 to 6.展开更多
At the invitation of the Chinese Association for International Understanding(CAFIU),a 15-member African NGO delegation composed of representatives from Namibia,Nigeria and Tanzania visited China from July 7 to July 18...At the invitation of the Chinese Association for International Understanding(CAFIU),a 15-member African NGO delegation composed of representatives from Namibia,Nigeria and Tanzania visited China from July 7 to July 18.Coming from nine influential NGOs of the three above-mentioned African countries,members of the delegation are engaged in different展开更多
At the invitation of the Israel Youth Exchange Council,a six-member Chinese youth delegation including the author,led by Jia Tiesong,Assistant Director of China Youth Center for International Exchanges,paid a visit to...At the invitation of the Israel Youth Exchange Council,a six-member Chinese youth delegation including the author,led by Jia Tiesong,Assistant Director of China Youth Center for International Exchanges,paid a visit to Israel from November11th to 15th,2018.Having got a deeper understanding of Israel’s national conditions,history,innovation industry and youth,the delegation exchanged views with the Israeli side on institutionalized exchanges and other issues.展开更多
At the invitation of the Friedrich-Ebert Stiftung of Germany,the World Bridge Foundation of Hungary,and the Austria-China Friendship Association,a delegation of the Chinese Association for International Understanding(...At the invitation of the Friedrich-Ebert Stiftung of Germany,the World Bridge Foundation of Hungary,and the Austria-China Friendship Association,a delegation of the Chinese Association for International Understanding(CAFIU)headed by H.E.Mr.Qi Xuchun,Vice-Chairman of the CPPCC National Committee and Vice-President of CAFIU paid friendly visits to Germany,Hungary and Austria.The展开更多
At the invitation of Indonesia National Council on Social Welfare(DNIKS)and Sri Lanka-China Friendship Association(SLCFA),Mr.Liu Kaiyang,Deputy Secretary-General of CAFIU headed a 6-member delegation to visit Indonesi...At the invitation of Indonesia National Council on Social Welfare(DNIKS)and Sri Lanka-China Friendship Association(SLCFA),Mr.Liu Kaiyang,Deputy Secretary-General of CAFIU headed a 6-member delegation to visit Indonesia and Sri Lanka from December 7 to 14,2014.Through this visit,CAFIU has enhanced mutual understanding展开更多
文摘At the invitation of CAFIU,a delegation of 7 members of the Friedrich Ebert Foundation(FES),headed by Mr.Martin Schulz,Chairman of the Foundation,Former President of SPD,and Former President of European Parliament,visited China from 2nd to 7th February.During the delegation's visit in Beijing,Mr.Li Hongzhong,Member of the Political Bureau of the CPC Central Committee and Vice-Chairperson of the Standing Committee of the National People's Congress of China,met with the delegation.
文摘On March 21st,Mr.Ai Ping,Vice-President of CAFIU,met in Bejing with a 6-member delegation from the US Word4Asia led by Dr.Gene Wood,Chief Executive Officer of Word4Asia.Mme.Xiao Ningning,Deputy Secretary-General of China NGO Network for International Exchanges,Mr.Gu Chuanyong,Vice-Chair of Board of the Amity Foundation,and Mme.She Hongyu,Deputy Secretary-General of the Amity Foundation,attended the meeting.The two sides exchanged views on deepening people-to-people exchanges and cooperation between China and the United States and on the preparation of the 5th"Amity Cup"International Table Tennis Charity Competition.
文摘On March 13th,CAFIU Vice-President Liu Hongcai met the delegation from(JCP)Japan-China Friendship Association.The two sides exchanged views on people-to-people and youth exchanges between the two countries.Vice-President Liu Hongcai said that civil society organisations in China and Japan should persist in serving as bridges for official communication and contributing civil society efforts to promote China-Japan friendship.
文摘In Niger,a country at the southern end of the Sahara Desert,the announcement of the arrival of wushu teachers attracted a large number of people from near and far,despite a tiring journey.Curious and covetous glances testify to the attraction of this oriental culture.
文摘At the invitation of CAFIU,the delegation of 15 renowned sinologists from 15 countries including Iran,Spain,and Mexico visited China from September 4th to 15th.
文摘On November 28,a delegation of Russian scholars led by Victor Larin,Academician of the Russian Academy of Sciences and Director at the Far Eastern Branch,visited the Xi Jinping Thought on Diplomacy Studies Centre.Yu Jiang,CIIS Vice President and Full-Time Deputy Secretary-General of Xi Jinping Thought on Diplomacy Studies Centre,had in-depth exchanges with Russian scholars on the significance and practice of Xi Jinping Thought on Diplomacy and China-Russia relations.
文摘Portable communication systems can provide mobile users with global roaming services. Recently, Youn and Lim proposed a delegation-based authentication protocol which achieves unlinkability for secure roaming services. This paper indicates that there are two drawbacks in Youn and Lim＇s protocol： 1） the synchronization problem will lead to a fail in on-line authentication; and 2） the exhaustive search puts a heavy burden on the off-line authentication process. Moreover, based on Youn and Lim＇s protocol, a remedy is proposed to address these problems. It is worthwhile to note that the proposed remedy not only keeps the original advantages but also enhances the security and performance.
基金supported by the National Science Council under Grant No. NSC100-2410-H-005-046
文摘Grid security infrastructure （GSI） provides the security in grids by using proxy certificates to delegate the work of authentication. At present, revocation proxy certificate has two kinds of methods, one is using certificate revocation list （CRL） and the other is giving the certificate a short period of validity. However, when a lot of certifications are revoked, CRL will be the burden in the system. If the certificate has a short period of validity, entities should be often updating the certificate. In this paper, we propose a scheme for proxy certificate revocation using hash tree. Our scheme only needs hash value comparisons to achieve the purpose of certificate revocation. Previous two methods have to wait the expiration of the certificate. Therefore, our scheme is more flexible than previous methods.
文摘Mobile agent technology is promising for e-commerce and distributed computing applications due to its properties of mobility and autonomy. One of the most security-sensitive tasks a mobile agent is expected to perform is signing digital signatures on a remote untrustworthy service host that is beyond the control of the agent host. This service host may treat the mobile agents unfairly, i.e. according to its’ own benefit rather than to their time of arrival. In this research, we present a novel protocol, called Collusion-Resistant Distributed Agent-based Signature Delegation (CDASD) protocol, to allow an agent host to delegate its signing power to an anonymous mobile agent in such a way that the mobile agent does not reveal any information about its host’s identity and, at the same time, can be authenticated by the service host, hence, ensuring fairness of service provision. The protocol introduces a verification server to verify the signature generated by the mobile agent in such a way that even if colluding with the service host, both parties will not get more information than what they already have. The protocol incorporates three methods: Agent Signature Key Generation method, Agent Signature Generation method, Agent Signature Verification method. The most notable feature of the protocol is that, in addition to allowing secure and anonymous signature delegation, it enables tracking of malicious mobile agents when a service host is attacked. The security properties of the proposed protocol are analyzed, and the protocol is compared with the most related work.
文摘At the invitation of CAFIU,a 6-member delegation of Members of European Parliament(MEP)led by Mr.István Ujhelyi,Vice-Chair of the European Parliament Committee on Transport and Tourism(TRAN),and former Deputy Speaker of the Hungarian National Assembly visited China on June 17-20,2015.In Beijing,Mr.Qi Xuchun,Vice-Chairman of
文摘At the invitation of CAFIU,a 14-member neighboring NGO delegation composed of representatives from Bangladesh,India,Indonesia and the Philippines visited China’s Beijing and Chengdu from July 7 to 16,2015.CAFIU Deputy Secretary-General Liu Kaiyang accompanied the delegation to Chengdu.As a CAFIU staff member,I had the honor to accompany the
基金Project (No. 602032) supported by the Natural Science Foundationof Zhejiang Province, China
文摘New challenges are introduced when people try to build a general-purpose mobile agent middleware in Grid envi- ronment. In this paper, an instance-oriented security mechanism is proposed to deal with possible security threats in such mobile agent systems. The current security support in Grid Security Infrastructure (GSI) requires the users to delegate their privileges to certain hosts. This host-oriented solution is insecure and inflexible towards mobile agent applications because it cannot prevent delegation abuse and control well the diffusion of damage. Our proposed solution introduces security instance, which is an en- capsulation of one set of authorizations and their validity specifications with respect to the agent’s specific code segments, or even the states and requests. Applications can establish and configure their security framework flexibly on the same platform, through defining instances and operations according to their own logic. Mechanisms are provided to allow users delegating their identity to these instances instead of certain hosts. By adopting this instance-oriented security mechanism, a Grid-based general-purpose MA middleware, Everest, is developed to enhance Globus Toolkit’s security support for mobile agent applications.
文摘 The WFO Technical Forum 2009 (WTF),sponsored by World Foundrymen Organization,organized by Czech Foundrymens Society,was held on the 1st,2nd and 3rd June 2009,at the Hotel Voronez in Brno,Czech Republic. The 4 days included technical presentations,social events and the very important Ph.D conference. During the event there were the General Assembly bringing together the organizations members from around the world,and an exhibition,supported by 34 world's leading foundry based companies. In addition the event coincided with the Czech Foundrymens Society Foundry Days now in its 46th year.……
文摘At the invitation of the Chinese Association for International Understanding(CAFIU),a 6-member delegation of Civic Association "Polish House",headed by the Secretary of its Board Mr.Tadeusz Gajewski,visited Beijing and Hunan Province from December 1 to 6.
文摘At the invitation of the Chinese Association for International Understanding(CAFIU),a 15-member African NGO delegation composed of representatives from Namibia,Nigeria and Tanzania visited China from July 7 to July 18.Coming from nine influential NGOs of the three above-mentioned African countries,members of the delegation are engaged in different
文摘At the invitation of the Israel Youth Exchange Council,a six-member Chinese youth delegation including the author,led by Jia Tiesong,Assistant Director of China Youth Center for International Exchanges,paid a visit to Israel from November11th to 15th,2018.Having got a deeper understanding of Israel’s national conditions,history,innovation industry and youth,the delegation exchanged views with the Israeli side on institutionalized exchanges and other issues.
文摘At the invitation of the Friedrich-Ebert Stiftung of Germany,the World Bridge Foundation of Hungary,and the Austria-China Friendship Association,a delegation of the Chinese Association for International Understanding(CAFIU)headed by H.E.Mr.Qi Xuchun,Vice-Chairman of the CPPCC National Committee and Vice-President of CAFIU paid friendly visits to Germany,Hungary and Austria.The
文摘At the invitation of Indonesia National Council on Social Welfare(DNIKS)and Sri Lanka-China Friendship Association(SLCFA),Mr.Liu Kaiyang,Deputy Secretary-General of CAFIU headed a 6-member delegation to visit Indonesia and Sri Lanka from December 7 to 14,2014.Through this visit,CAFIU has enhanced mutual understanding
