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Explore a groundbreaking paper on quantum cryptography presented at EUROCRYPT 2019. Delve into the concept of "Quantum Lightning" and its implications for blockchain technology. Examine the limits of quantum money, potential Bitcoin alternatives, and the intriguing idea that "lightning never strikes the same place twice" in quantum systems. Investigate constructions, bit commitment schemes, and the limitations of quantum rewinding. Gain insights into program obfuscation and the potential for quantum lightning based on Learning With Errors (LWE). Analyze the construction of quantum lightning and its applications in public key obfuscation mechanisms (PKOM).
Syllabus
Quantum No-Cloning
Limits of (Plain) Quantum Money
Bitcoin sans Blockchain?
Lightning Never Strikes Same Place Twice?
Constructions?
(Bit) Commitment Schemes
Limitation: Quantum Rewinding
Is this really a problem?
Intuition
Takeaways
Program Obfuscation
Quantum Lightning from LWE?
Gap LWE
Constructing Quantum Lightning
PKOM from Obfuscation
Taught by
TheIACR