6 papers
Public-Key Quantum Fire and Key-Fire From Classical Oracles
Alper Ãakan, Vipul Goyal, Omri Shmueli
Quantum fire is a distribution of quantum states that can be efficiently cloned, but cannot be efficiently converted into a classical string. First considered by Nehoran and Zhandr…
Multi-Copy Security in Unclonable Cryptography
Alper Ãakan, Vipul Goyal, Fuyuki Kitagawa +2
Unclonable cryptography leverages the quantum no-cloning principle to copy-protect cryptographic functionalities. While most existing works address the basic single-copy security,…
On the Cryptographic Futility of Non-Collapsing Measurements
Alper Cakan, Dakshita Khurana, Tomoyuki Morimae +3
We investigate quantum analogues of collision resistance and obtain separations between quantum ``one-way'' and ``collision-resistant'' primitives. 1. Our first result studies one-…
How to Copy-Protect Malleable-Puncturable Cryptographic Functionalities Under Arbitrary Challenge Distributions
Alper Ãakan, Vipul Goyal
A quantum copy-protection scheme (Aaronson, CCC 2009) encodes a functionality into a quantum state such that given this state, no efficient adversary can create two (possibly entan…
How to Delete Without a Trace: Certified Deniability in a Quantum World
Alper Ãakan, Vipul Goyal, Justin Raizes
Is it possible to comprehensively destroy a piece of quantum information, so that nothing is left behind except the memory of whether one had it at one point? For example, various…
Anonymous Public-Key Quantum Money and Quantum Voting
Alper Cakan, Vipul Goyal, Takashi Yamakawa
Quantum information allows us to build quantum money schemes, where a bank can issue banknotes in the form of authenticatable quantum states that cannot be cloned or counterfeited.…