Blar i Institutt for matematiske fag på forfatter "Zeng, Runzhi"
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Compact and Tightly Selective-Opening Secure Public-key Encryption Schemes
Pan, Jiaxin; Zeng, Runzhi (Peer reviewed; Journal article, 2022)We propose four public-key encryption schemes with tight simulation-based selective-opening security against chosen-ciphertext attacks (SIM-SO-CCA) in the random oracle model. Our schemes only consist of small constant ... -
A Generic Construction of Tightly Secure Password-Based Authenticated Key Exchange
Pan, Jiaxin; Zeng, Runzhi (Peer reviewed; Journal article, 2023)We propose a generic construction of password-based authenticated key exchange (PAKE) from key encapsulation mechanisms (KEM). Assuming that the KEM is oneway secure against plaintext-checkable attacks (OW-PCA), we prove ... -
Lattice-Based Authenticated Key Exchange with Tight Security
Pan, Jiaxin; Wagner, Benedikt; Zeng, Runzhi (Peer reviewed; Journal article, 2023)We construct the first tightly secure authenticated key exchange (AKE) protocol from lattices. Known tight constructions are all based on Diffie-Hellman-like assumptions. Thus, our protocol is the first construction with ... -
Tighter Security for Generic Authenticated Key Exchange in the QROM
Pan, Jiaxin; Wagner, Benedikt; Zeng, Runzhi (Peer reviewed; Journal article, 2023)Home Advances in Cryptology – ASIACRYPT 2023 Conference paper Tighter Security for Generic Authenticated Key Exchange in the QROM Download book PDF Download book EPUB Tighter Security for Generic Authenticated Key ...