CCA-Secure Hybrid Encryption in Correlated Randomness Model and KEM Combiners

arXiv:2401.00983v2 Announce Type: replace
Abstract: 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 …

algorithm arxiv called cca cs.cr data encryption hybrid key mechanism messages public public key public key encryption randomness symmetric system