36 citations · 73 across the 18 of their papers we have counts for
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quant-ph2022
Functional Encryption with Secure Key Leasing
Fuyuki Kitagawa, Ryo Nishimaki
Secure software leasing is a quantum cryptographic primitive that enables us to lease software to a user by encoding it into a quantum state. Secure software leasing has a mechanis…
cs.CR2022
Certified Everlasting Functional Encryption
Taiga Hiroka, Tomoyuki Morimae, Ryo Nishimaki +1
Computational security in cryptography has a risk that computational assumptions underlying the security are broken in the future. One solution is to construct information-theoreti…
quant-ph2022
Watermarking PRFs against Quantum Adversaries
Fuyuki Kitagawa, Ryo Nishimaki
We initiate the study of software watermarking against quantum adversaries. A quantum adversary generates a quantum state as a pirate software that potentially removes an embedded…