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ZHAI Jiaqi, LIU Jian, CHEN Lusheng, WANG Lingyu. MSK-PK: A Public-Key Encryption Cryptosystem with Multiple Secret-Keys[J]. Chinese Journal of Electronics. doi: 10.1049/cje.2020.00.049
Citation: ZHAI Jiaqi, LIU Jian, CHEN Lusheng, WANG Lingyu. MSK-PK: A Public-Key Encryption Cryptosystem with Multiple Secret-Keys[J]. Chinese Journal of Electronics. doi: 10.1049/cje.2020.00.049

MSK-PK: A Public-Key Encryption Cryptosystem with Multiple Secret-Keys

doi: 10.1049/cje.2020.00.049
Funds:  This work was sponsored by National Key R&D Program of China (2019YFB2101700), National Key Research and Development Program of China (2018YFA0704703), and National Natural Science Foundation of China (61902276)
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  • Author Bio:

    received the B.E. and M.S degrees from Nankai University, China, in 2013 and 2016, respectively. Currently he is pursuing his Ph.D degree in Nankai University, China. His research interests include digital signatures, publickey encryption schemes, and cryptographic protocols. (Email: JQZhai@mail.nankai.edu.cn)

    (corresponding author) received the B.S. and Ph.D. degrees from the School of Mathematical Sciences at Nankai University, Tianjin, China, in 2009, and 2015, respectively. She was a Visiting Ph.D. Student at the Department of Mathematics, University of Paris VIII, Paris, France. She is currently an Associate Professor with the School of Cybersecurity, College of Intelligence and Computing, Tianjin University, Tianjin, China. Her research interests include cryptography and coding theory. (Email: jianliu.nk@gmail.com)

    received the B.S. degree in mathematics from Nankai University, Tianjin, China, in 1984, the M.S. degree in computer science, Shandong University, Jinan, China, in 1987, and the Ph.D. degree in mathematics from Nankai University in 2000. He is currently a Professor of the School of Mathematical Sciences at Nankai University. His research interests include cryptography, coding theory, and information theory. (Email: lschen@nankai.edu.cn)

    is a Professor at the Concordia Institute for Information Systems Engineering (CIISE) at Concordia University, Montreal, Canada. He holds the NSERC/Ericsson Senior Industrial Research Chair in SDN/NFV security. He received the Ph.D. degree in information technology from George Mason University in 2006. He holds the M.E. degree from Shanghai Jiao Tong University and the B.E. degree from Shenyang Aerospace University. His research interests include cloud computing security, SDN/NFV security, security metrics, software security, and privacy. (Email: wang@ciise.concordia.ca)

  • Received Date: 2020-02-14
  • Accepted Date: 2022-01-06
  • Available Online: 2022-02-19
  • By allowing intermediate nodes to combine multiple packets before forwarding them, the concept of network coding in multi-cast networks can provide maximum possible information flow. However, this also means traditional encryption methods are less applicable, since the different public-keys of receivers imply different ciphertexts which cannot be easily combined by network coding. While network coding itself may provide confidentiality, its effectiveness heavily depends on the underlying network topology and ability of the eavesdroppers. Finally, broadcast encryption and group key agreement techniques both allow a sender to broadcast the same ciphertext to all the receivers, although they rely on the assumptions of trusted key servers or secure channels. In this paper, we propose a novel public-key encryption concept with a single public-key for encryption and multiple secret keys for decryption (MSK-PK), which has limited ciphertext expansion and does not require trusted key servers or secure channels. To demonstrate the feasibility of this concept, we construct a concrete scheme based on a class of lattice-based multi-trapdoor functions. We prove that those functions satisfy the one-wayness property and can resist the nearest plane algorithm.
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