Quantum Security of TNT

ePrint Report: Quantum Security of TNT

Shuping Mao, Zhiyu Zhang, Lei Hu, Luying Li, Peng Wang

With the development of quantum attacks, many classical-secure structures are not secure in quantum. How to evaluate the quantum security of structure and give a tight security bound becomes a challenging research topic. As a tweakable block cipher structure based on block ciphers, $\mathsf{TNT}$ was proven to be of classical beyond-birthday-bound $O(2^{3n/4})$ security. We prove that $\mathsf{TNT}$ is a quantum-secure tweakable block cipher with …

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