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A Modular Analysis of the Fujisaki-Okamoto Transformation
public-key encryption Fujisaki-Okamoto transformation tight reductions
2017/6/26
The Fujisaki-Okamoto (FO) transformation (CRYPTO 1999 and Journal of Cryptology 2013) turns any weakly secure public-key encryption scheme into a strongly (i.e., IND-CCA) secure one in the random orac...
On the Key Dependent Message Security of the Fujisaki-Okamoto Constructions
public key encryption key dependent message security chosen ciphertext security
2016/3/7
In PKC 1999, Fujisaki and Okamoto showed how to convert any public key encryption
(PKE) scheme secure against chosen plaintext attacks (CPA) to a PKE scheme which is secure against
chosen ciphertext...
Quantum Security of the Fujisaki-Okamoto and OAEP Transforms
Quantum Random oracle Indistinguishability against chosen ciphertext attack
2016/1/27
In this paper, we present a hybrid encryption scheme that is chosen ciphertext secure
in the quantum random oracle model. Our scheme is a combination of an asymmetric and
a symmetric encryption sche...