On One-Shot Signatures, Quantum Vs Classical Binding, and Obfuscating Permutations

One-shot signatures OSS were defined by Amos, Georgiou, Kiayias, and Zhandry STOC'20. These allow for signing exactly one message, after which the signing key self-destructs, preventing a second message from ever being signed. While such an object is impossible classically, Amos et al observe tha...

From Worst-Case Hardness of NP to Quantum Cryptography Via Quantum Indistinguishability Obfuscation

Whitepaper called From Worst-Case Hardness Of NP To Quantum Cryptography Via Quantum Indistinguishability Obfuscation...