Cryptology ePrint Archive: Report 2017/206

Quantum Resistant Public Key Encryption Scheme RLCE and IND-CCA2 Security for McEliece Schemes

Yongge Wang

Abstract: Recently, Wang (2016) introduced a random linear code based quantum resistant public key encryp- tion scheme RLCE which is a variant of McEliece encryption scheme. In this paper, we introduce a revised version of the RLCE encryption scheme. The revised RLCE schemes are more efficient than the original RLCE scheme. Specifically, it is shown that RLCE schemes have smaller public key sizes com- pared to binary Goppa code based McEliece encryption schemes for corresponding security levels. The paper further proposes message padding schemes for RLCE to achieve IND-CCA2 security. Practical RLCE parameters for the security levels of 128, 192, and 256 bits and for the quantum security levels of 80, 110, and 144 are recommended. The implementation of the RLCE encryption scheme and software packages for analyzing the security strength of RLCE parameters are available at http://quantumca.org/

Category / Keywords: public-key cryptography / code based public key encryption

Date: received 28 Feb 2017, last revised 24 Dec 2017

Contact author: yonwang at uncc edu

Available format(s): PDF | BibTeX Citation

Version: 20171224:155138 (All versions of this report)

Short URL: ia.cr/2017/206