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A Note on the Post-Quantum Security of (Ring) Signatures [article]

Rohit Chatterjee, Kai-Min Chung, Xiao Liang, Giulio Malavolta
2021 arXiv   pre-print
(Crypto'21) proposes a definition trying to capture adversaries with quantum access to the signer.  ...  We present two short signature schemes achieving this notion: one is in the quantum random oracle model, assuming quantum hardness of SIS; and the other is in the plain model, assuming quantum hardness  ...  Computer Science, pages 602–631, Santa Barbara, CA, USA, August 1721, 2020.  ... 
arXiv:2112.06078v1 fatcat:potybhcv7nfqbaw4ek5ggiklmu

An Efficient and Robust Committee Structure for Sharding Blockchain [article]

Mengqian Zhang, Jichen Li, Zhaohua Chen, Hongyin Chen, Xiaotie Deng
2021 arXiv   pre-print
In addition, we introduce a referee committee and partial sets in each committee, and design a recovery procedure in case the leader is malicious.  ...  In order to break the performance bottlenecks, we propose a reputation mechanism for selecting leaders. The term of reputation in our design reflects each node's honest computation resources.  ...  SSChain [26] introduces a root chain in Cryptology - CRYPTO 2017 - 37th Annual International Cryptology Conference, Santa  ... 
arXiv:2112.15322v1 fatcat:uaqrt57nt5hhxm6lxl5zua4jmq

A Comprehensive Survey on Sharding in Blockchains

Jinwen Xi, Shihong Zou, Guoai Xu, Yanhui Guo, Yueming Lu, Jiuyun Xu, Xuanwen Zhang, Francesco Gringoli
2021 Mobile Information Systems  
Blockchain technology has been widely used in many fields, such as smart cities, smart health care, and smart manufacturing, due to its anonymity, decentralization, and tamper resistance in peer-to-peer  ...  However, poor scalability has severely affected the widespread adoption of traditional blockchain technology in high-throughput and low-latency applications.  ...  CA, USA, August 2018.  ... 
doi:10.1155/2021/5483243 fatcat:x67pir24enadjaauwvbh76dpre