According to the Science and Technology Daily, recently, Professor Han Zhengfu, Key Laboratory of Quantum Information of the Chinese Academy of Sciences, University of Science and Technology of China, said in an interview that today's cryptography technology connects the most popular blockchain and quantum computing. The blockchain is mainly Asymmetric encryption algorithms are used to protect information security, and quantum computers, with their incomparable computing power, attack traditional passwords and make them possible to crack. In the future, digital currencies will inevitably play a game with quantum computing. There may be a battle between the two.