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An Efficient broadcast encryption Supporting Designation and Revocation Mechanisms

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Chinese Journal of Electronics 2019年第3期28卷 445-456页

作者： ZHU Yan YU Ruyun CHEN E HUANG Dijiang School of Computer and Communication Engineering University of Science and Technology Beijing School of Computing Informatics and Decision System Engineering Arizona State University

In this paper our objective is to explore approaches of secure group-oriented communication with designation and revocation mechanisms *** present a new scheme of Revocation-based broadcast encryption(RBBE) which is designed on Dan Boneh et al.’s scheme with the designation mechanism proposed in 2005. We combine two above-mentioned schemes into a new cryptosystem, called Dual-mode broadcast encryption(DMBE). Based on these work, we reach the following conclusions. We use the DMBE scheme as an example to show that it is feasible to construct a broadcast encryption scheme that supports designation and revocation mechanisms simultaneously. The cryptosystem with dual modes is more efficient than that with single mode over computational costs, and the performance is improved to at most O(「N/2」), where N is the total number of users in the system. We prove completely that both the RBBE scheme and the DMBE scheme are semantically secure against chosen plaintext attack with full collusion under the decisional bilinear Diffie-Hellman exponent assumption.

关键词： Cryptography broadcast encryption Provable security Revocation Designation Dual modes

Revocable broadcast encryption with Constant Ciphertext and Private Key Size

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Chinese Journal of Electronics 2019年第4期28卷 690-697页

作者： JIA Hongyong CHEN Yue YANG Kuiwu GUO Yuanbo WANG Zhiwei Zhengzhou University State Key Laboratory of Mathematical Engineering and Advanced Computing Nanjing University of Post and Communications

In a revocable broadcast encryption scheme, the group manager can flexibly set revoked users who cannot decrypt the ciphertext. Many applications of the revocable broadcast encryption have been found in the secure cloud data sharing. An adaptively secure revocable broadcast encryption system with constant ciphertext and private key size under standard assumptions is more suitable for use in the cloud environment. Few existing revocable broadcast encryption schemes meet such a requirement. We propose a revocable broadcast encryption scheme with constant size ciphertext and private key by combining the RSA cryptographic accumulator with an efficient identity based encryption system. We prove it to be adaptively secure under standard assumptions using dual system encryption techniques.

关键词： Cryptographic accumulator broadcast encryption Revocable Dual system encryption Cloud data sharing

Identity-based broadcast encryption with Shorter Transmissions

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Journal of Shanghai Jiaotong university(Science) 2008年第6期13卷 641-645页

作者：张乐友胡予濮牟宁波 Department of Mathematical Science Xidian University Xi'an 710071China Key Laboratory of Computer Networks and Information Security Ministry of EducationXidian UniversityXi'an 710071China

This paper describes two identity-based broadcast encryption （IBBE） schemes for mobile ad hoc networks. The first scheme proposed achieves sub-linear size cipertexts and the second scheme achieves O（1）- size ciphertexts. Furthermore, when the public keys are transmitted, the two schemes have short transmissions and achieve O（1） user storage cost, which are important for a mobile ad hoc network. Finally, the proposed schemes are provable security under the decision generalized bilinear Diffi-Hellman （GBDH） assumption in the random oracles model.

关键词： broadcast encryption identity-based encryption short transmissions provable security

Pirate decoder for the broadcast encryption schemes from Crypto 2005

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Science in China(Series F) 2007年第3期50卷 318-323页

作者： WENG Jian LIU ShengLi CHEN KeFei Department of Computer Science and Engineering Shanghai Jiao Tong University Shanghai 200240China

In Crypto＇05, Boneh et al. presented two broadcast encryption schemes. Their work has exciting achievements： the header （also called ciphertexts） and the private keys are of constant size. In their paper, they give an open question to construct a traitor tracing algorithm for their broadcast encryption schemes, and combine the two systems to obtain an efficient trace-and-revoke system. In this paper, we give a negative answer to their open question. More precisely, we show that three or more insider users are able to collude to forge a valid private key for pirate decoding against their schemes. Moreover, we prove that there exists no traitor tracing algorithm to identify the colluders. Our pirate decoding can also similarly be applied to Lee et al.＇s broadcast encryption schemes in ISPEC＇06.

关键词： broadcast encryption pirate decoder traitor tracing

Chosen Ciphertext Secure Identity-Based broadcast encryption in the Standard Model

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Journal of Shanghai Jiaotong university(Science) 2011年第6期16卷 672-676页

作者：孙瑾胡予濮张乐友 Key Laboratory of Computer Network and Information Security Xidian University Department of Application Mathematics Xi'an University of Technology

To give concurrent consideration both the efficiency and the security(intensity of intractable problem) in the standard model,a chosen ciphertext secure identity-based broadcast encryption is *** the chosen ciphertext security model,by using identity(ID) sequence and adding additional information in ciphertext,the self-adaptive chosen identity security(the full security) and the chosen ciphertext security are gained *** reduction of scheme's security is the decisional bilinear Diffie-Hellman(BDH) intractable assumption,and the proof of security shows that the proposed scheme is indistinguishable against adaptive chosen ciphertext attacks in the standard model under the decisional BDH intractable *** the security level is improved,and it is suitable for higher security environment.

关键词： the standard model provably secure broadcast encryption the chosen ciphertext security the self-adaptive chosen identity security

Implementing broadcast encryption Scheme Using Bilinear Map and Group Characteristic

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Wuhan University Journal of Natural Sciences 2006年第6期11卷 1554-1558页

作者： ZHANG Yichun LIU Jianbo JIN Libiao LI Jianzeng School of Information Engineering Communication University of China Beijing 100024 China

This paper introduced a novel method for implementing broadcast encryption. Our scheme takes advantages of bilinear map and group characteristic, and shifts most of the storage overhead to the public device instead of storing in the tamper-proof device which is a major problem on current implementation. Furthermore, the broadcast keys in our scheme could be reused periodically resulting in more operational efficiency.

关键词： broadcast encryption bilinear map access control

Efficient broadcast encryption Scheme Based on Number Theory Research Unit

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Wuhan University Journal of Natural Sciences 2010年第3期15卷 247-250页

作者： ZHANG Weidong LU Xixiang LI Hui State Key Laboratory of Integrated Service Networks Xidian University Xi'an 710071 Shaanxi China

In this paper, a new broadcast encryption scheme is proposed by using the efficient and computationally inexpensive public key cryptosystem NTRU （number theory research unit）. In our scheme, we use the idea of RSA and develop this idea from two-party to multi-party, and combine this multi-party public key idea with the multiplication in ring R of NTRU. What we get from this design is extremely efficient encryption and decryption, fast and easy key creation, low memory requirements and revocation property, etc. Moreover, this novel work contains other desirable features, such as traitor tracing. With its complexity only O（log2n）, the tracing algorithm of this system is more efficient than that of the previous ones.

关键词： broadcast encryption traitor tracing software protection information security

Research on RSA-based broadcast encryption Scheme in Web Multimedia

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Research on RSA-based Broadcast Encryption Scheme in Web Mul...

A Multi-Key Pirate Decoder Against Traitor Tracing Schemes

2012 National Conference on Information Technology and Computer Science

作者： Liang Xue College of Computer Science Sichuan University Chengdu,China Du Zhongjun College of Computer Science Sichuan University Chengdu,Sichuan

With the development of web multimedia technology,broadcast encryption schemes play an important role in multimedia services copyright *** this paper,we propose a new broadcast encryption scheme based on RSA,besides,we give out two algorithms-smallest power exponent algorithm and improved modular exponential algorithm,to simplify the repeated squaring in *** scheme could reduce the encryption and decryption calculated amount greatly,improve the communication bandwidth and deter the forcible attack *** the course of KGC（Key Generation Center） distributing keys,we adopt the different module remainder strategy,thus realizing that when new members jion in,keys needn’t be updated,and this could enhance the practicality and security of broadcast encryption scheme.

关键词： web multimedia RSA broadcast encryption

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Journal of Computer Science & Technology 2010年第2期25卷 362-374页

作者：吴永东 Member, IEEE 邓慧杰 Institute for Infocomm Research A STAR 138632 Singapore School of Information Systems Singapore Management University 178902 Singapore

In this paper we introduce an architecture for a multi-key pirate decoder which employs decryption keys from multiple traitors. The decoder has built-in monitoring and self protection functionalities and is capable of defeating most multiple-round based traitor tracing schemes such as the schemes based on the black-box confirmation method. In particular, the proposed pirate decoder is customized to defeat the private key and the public key fully collusion resistant traitor tracing （FTT） schemes, respectively. We show how the decoder prolongs a trace process so that the tracer has to give up his effort. FTT schemes are designed to identify all the traitors. We show that decoder enables the FTT schemes to identify at most 1 traitors. Finally, assuming the decoder is embedded with several bytes of memory, we demonstrate how the decoder is able to frame innocent users at will.

关键词： broadcast encryption multi-key pirate decoder traitor tracing