Revocable Quantum Digital Signatures

Watch a technical conference presentation from TQC 2024 exploring two significant advances in quantum digital signatures with revocation capabilities. Learn about the construction of digital signatures with revocable signing keys using the LWE assumption, where quantum state signing keys can be collapsed into verifiable classical certificates, and discover how digital signatures with quantum revocation can be built from group actions. Delve into the development of digital signatures with revocable signatures from OWFs, featuring a new two-tier variant of tokenized signatures and an adaptive hardcore bit property. Presented by researchers Tomoyuki Morimae, Alexander Poremba, and Takashi Yamakawa at the 19th Conference on the Theory of Quantum Computation, Communication and Cryptography, this talk advances theoretical frameworks in quantum information science and cryptography.