Chinese Scientists Develop Quantum-Resistant Blockchain Storage Technology

A team of Chinese researchers has unveiled a new blockchain storage solution designed to withstand the growing threat posed by quantum computers. Blockchain, widely regarded as a breakthrough for secure, decentralized record-keeping in areas like finance and logistics, could face major vulnerabilities as quantum computing advances. 

Typically, blockchains use complex encryption based on mathematical problems such as large-number factorization. However, quantum computers can solve these problems at unprecedented speeds, potentially allowing attackers to forge signatures, insert fraudulent data, or disrupt the integrity of entire ledgers. 

“Even the most advanced methods struggle against quantum attacks,” said Wu Tong, associate professor at the University of Science and Technology Beijing. Wu collaborated with researchers from the Beijing Institute of Technology and Guilin University of Electronic Technology to address this challenge. 

Their solution is called EQAS, or Efficient Quantum-Resistant Authentication Storage. It was detailed in early June in the Journal of Software. Unlike traditional encryption that relies on vulnerable math-based signatures, EQAS uses SPHINCS – a post-quantum cryptographic signature tool introduced in 2015. SPHINCS uses hash functions instead of complex equations, enhancing both security and ease of key management across blockchain networks. 

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