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
收藏
页码：13 / 21
页数：9
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