Post-Quantum Variants of ISO/IEC Standards: Compact Chosen Ciphertext Secure Key Encapsulation Mechanism from Isogeny

被引：9

作者：

Yoneyama, Kazuki ^{[1
]}

机构：

[1] Ibaraki Univ, Hitachi, Ibaraki, Japan

来源：

PROCEEDINGS OF THE 5TH ACM WORKSHOP ON SECURITY STANDARDISATION RESEARCH WORKSHOP (SSR '19) | 2019年

关键词：

Post-quantum cryptosystems; Isogeny-based cryptosystems; CSIDH;

D O I：

10.1145/3338500.3360336

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

ISO/IEC standardizes several chosen ciphertext-secure key encapsulation mechanism (KEM) schemes in ISO/IEC 18033-2. However, all ISO/IEC KEM schemes are not quantum resilient. In this paper, we introduce new isogeny-based KEM schemes (i.e., CSIDH-ECIES-KEM and CSIDH-PSEC-KEM) by modifying Diffie-Hellman-based KEM schemes in ISO/IEC standards. The main advantage of our schemes are compactness. The key size and the ciphertext overhead of our schemes are about five times smaller than these of SIKE-KEM which is submitted to NIST's post-quantum cryptosystems standardization.

引用

页码：13 / 21

页数：9