Can I read CCA-Secure Hybrid Encryption in Correlated Randomness Model and KEM Combiners on EtoBox?

CCA-Secure Hybrid Encryption in Correlated Randomness Model and KEM Combiners by Panja, Somnath; Sharifian, Setareh; Jiang, Shaoquan; Safavi-Naini, Reihaneh is a scholarly article available to read on EtoBox.

What is CCA-Secure Hybrid Encryption in Correlated Randomness Model and KEM Combiners about?

A hybrid encryption (HE) system is an efficient public key encryption system for arbitrarily long messages. An HE system consists of a public key component called key encapsulation mechanism (KEM), and a symmetric key component called data encapsulation mechanism (DEM). The HE encryption algorithm uses a KEM generated key k to encapsulate the message using DEM, and send the ciphertext together with the encapsulaton of k, to the decryptor who decapsulates k and uses it to decapsulate the message using the corresponding KEM and DEM components. The KEM/DEM composition theorem proves that if KEM and DEM satisfy well-defined security notions, then HE will be secure with well defined security. We introduce HE in correlated randomness model where the encryption and decryption algorithms have samples of correlated random variables that are partially leaked to the adversary. Security of the new KEM/DEM paradigm is defined against computationally unbounded or polynomially bounded adversaries. We define iKEM and cKEM with respective information theoretic computational security, and prove a composition theorem for them and a computationally secure DEM, resulting in secure HEs with proved compu

Author

Panja, Somnath; Sharifian, Setareh; Jiang, Shaoquan; Safavi-Naini, Reihaneh

Published

2024

Language

EN