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Institute of Information Science, Academia Sinica

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SPHINCS+ Digital Signature Algorithm Becomes Post-Quantum Cryptography Standard, NIST Releases FIPS 205 to Address Quantum-Era Security Challenges

Project team member from IIS: Ruben Niederhagen, Associate Research Fellow

SPHINCS+ is a post-quantum digital signature algorithm designed to address the potential threats posed by quantum computers. It is renowned for its unique ability to resist quantum attacks by using a hash-based signature structure, ensuring long-term security without relying on traditional number-theoretic assumptions. SPHINCS+ prioritizes security over speed or signature size, making it suitable for applications requiring high stability and long-term guarantees. Recently, it became part of the NIST standard FIPS-205 and is set to be adopted globally.

Ruben Niederhagen, an associate research fellow at the Institute of Information Science, was one of the original authors of SPHINCS+. He worked with the team in developing the algorithm and played an integral role in the NIST postquantum cryptography standardization process, balancing both efficiency and security during its implementation and optimization.

An illustration of the algorithm

 View Full Paper    Academia Sinica