Cryptanalysis of the ICCS NGCC Round-1 Public-Key Candidates

Zhenyu Xiong; Mingsheng Wang

Paper 2026/2232

Cryptanalysis of the ICCS NGCC Round-1 Public-Key Candidates

Zhenyu Xiong, Institute of Information Engineering, Chinese Academy of Sciences

Mingsheng Wang, Institute of Information Engineering, Chinese Academy of Sciences

Abstract

The ICCS Next-Generation Commercial Cryptography (NGCC) round-1 call received 84 public key candidates: 34 signatures, 41 KEMs and 9 key-exchange schemes. The call invites public evaluation. This report collects sixteen candidates that we broke against their unmodified reference implementations. All packages are collected at https://github.com/acprk/ngcc-round1-cryptanalysis (one subdirectory per scheme).

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Preprint.
Keywords: post-quantum cryptography cryptanalysis independent verification key recovery IND-CCA decryption-failure oracle
Contact author(s): xiongzhenyu @ iie ac cn
wangmingsheng @ iie ac cn
History: 2026-09-28: revised; 2026-09-27: received; See all versions
Short URL: https://ia.cr/2026/2232
License: CC BY

BibTeX

@misc{cryptoeprint:2026/2232,
      author = {Zhenyu Xiong and Mingsheng Wang},
      title = {Cryptanalysis of the {ICCS} {NGCC} Round-1 Public-Key Candidates},
      howpublished = {Cryptology {ePrint} Archive, Paper 2026/2232},
      year = {2026},
      url = {https://eprint.iacr.org/2026/2232}
}