FO Transform → IND-CCA (KEM)

The Fujisaki-Okamoto transform applied to an IND-CPA PKE scheme results in an IND-CCA KEM.

Parameters

$\mathsf{PKE}$: Public-key encryption scheme used in the Fujisaki-Okamoto transform (IND-CPA (PKE))

Concept

Specification: Fujisaki-Okamoto Transform

FO Transform.$\mathsf{PKE}$ = $\mathsf{PKE}$

Implication

Indistinguishable KEM under chosen-ciphertext attacks (IND-CCA (KEM))