(Tightly) QCCA-Secure Key-Encapsulation Mechanism in the Quantum Random Oracle Model

You are looking at a specific version 20181019:043456 of this paper. See the latest version.

Paper 2018/838

(Tightly) QCCA-Secure Key-Encapsulation Mechanism in the Quantum Random Oracle Model

Keita Xagawa and Takashi Yamakawa

Abstract

This paper shows the security against quantum chosen-ciphertext attacks (QCCA security) of the KEM in Saito, Yamakawa, and Xagawa (EUROCRYPT 2018) in the QROM. The proof is very similar to that for the CCA security in the QROM, easy to understand, and as tight as the original proof.

Note: Correct errors on inaccurate keys and references.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Preprint. MINOR revision.
Keywords: Tight security quantum chosen-ciphertext security post-quantum cryptography KEM
Contact author(s): xagawa keita @ lab ntt co jp
History: 2021-08-25: last of 4 revisions; 2018-09-06: received; See all versions
Short URL: https://ia.cr/2018/838
License: CC BY