36 citations · 73 across the 18 of their papers we have counts for
3 papers · 1 filter
PKE and ABE with Collusion-Resistant Secure Key Leasing
Fuyuki Kitagawa, Ryo Nishimaki, Nikhil Pappu
Secure key leasing (SKL) is an advanced encryption functionality that allows a secret key holder to generate a quantum decryption key and securely lease it to a user. Once the user…
Publicly Verifiable Deletion from Minimal Assumptions
Fuyuki Kitagawa, Ryo Nishimaki, Takashi Yamakawa
We present a general compiler to add the publicly verifiable deletion property for various cryptographic primitives including public key encryption, attribute-based encryption, and…
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…