论文标题
威胁和机会：区块链符合量子计算
Threats and Opportunities: Blockchain Meets Quantum Computation
论文作者
论文摘要
本文考虑了量子计算的开发表现出蓬勃发展的区块链技术的缺陷。我们表明，未来的区块链技术将从以下各个方面持续威胁：1）加快Nonces的产生； 2）更快地搜索哈希碰撞； 3）打破经典加密的安全性。我们还证明，将一些量子特性纳入区块链使其更加稳健，更有效。例如，人们可以建立使用量子密钥分布（QKD）的量子安全区块链系统，即使存在许多恶意节点，量子同步和可检测的拜占庭协议（DBA）也可以帮助区块链系统达成更快的共识。
This article considered deficiencies of the flourishing blockchain technology manifested by the development of quantum computation. We show that the future blockchain technology would under constant threats from the following aspects: 1) Speed up the generation of nonces; 2) Faster searching for hash collisions; 3) Break the security of the classical encryption. We also demonstrate that incorporating some quantum properties into blockchain makes it more robust and more efficient. For example people can establish a quantum-security blockchain system that utilizes quantum key distribution (QKD), and quantum synchronization and detectable Byzantine agreement (DBA) can help the blockchain systems achieve faster consensus even if there exist a number of malicious nodes.
