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Independent Post-Quantum KEM and Digital Signature Suite in C++ (NSLD Reduction)

0
Medium
Security-newscybersecurityreddit
Published: Sun Jun 07 2026 (06/07/2026, 15:59:52 UTC)
Source: Reddit Cybersecurity

Description

This report covers an independent post-quantum cryptographic suite implemented in C++ that includes a Key Encapsulation Mechanism (KEM) and Digital Signature modules. The security of this suite is based on a novel mathematical reduction to the Non-Symmetric Lattice Distance (NSLD) problem, with formal proofs and benchmarking publicly available. The implementation is currently closed-source but accompanied by transparent theoretical documentation and academic publications. There is no indication of any vulnerabilities, exploits, or security threats associated with this software at this time. The project is intended for academic evaluation and benchmarking, with no known exploits in the wild and no patch or remediation required.

Reddit Discussion

r/cybersecurity·posted by u/Ok-Werewolf9375
00

Hi everyone,

I have been working independently on a lightweight, post-quantum cryptographic suite implemented in clean C++. Today I am sharing the core implementation of the Key Encapsulation Mechanism (KEM) and Digital Signature modules.

The underlying theoretical security of this implementation relies on a mathematical reduction to the Non-Symmetric Lattice Distance (NSLD) problem. The focus of this architecture is balancing cryptographic hardness with execution efficiency and low memory overhead, making it viable for constrained environments.

**Note on the Source Code:** The source code is currently distributed as a closed-source, proprietary compiled suite, though I reserve the right to potentially open-source it in the near future. However, the entire mathematical framework, proofs, and theoretical design have been made fully transparent and public from day one. The papers have been deposited on Zenodo with official DOIs.

On the GitHub repositories, I provide production-ready binaries, detailed documentation, header files for integration, and full benchmarking tools so anyone can test the raw execution speeds, key sizes, and CPU cycle performance on their own hardware.

I would love to get feedback from the community, specifically on:

  1. The efficiency of the KEM and signature generation cycles under heavy concurrent loads.

  2. The performance metrics of the compiled binaries across different architectures.

  3. The structural soundness of the NSLD reduction approach detailed in the pre-prints.

***

### 🔗 Project Links:

* **GitHub - KEM Module:** https://github.com/xdanielex/Structured-Lattice-KEM

* **GitHub - Digital Signature Module:** https://github.com/xdanielex/Structured-Lattice-Sign

* **Scientific Paper (KEM - Zenodo DOI):** https://doi.org/10.5281/zenodo.20282874

* **Scientific Paper (Signature - Zenodo DOI):** https://doi.org/10.5281/zenodo.20303387

Thanks in advance to anyone who takes the time to check out the benchmarks or read the papers!

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 06/07/2026, 16:03:32 UTC

Technical Analysis

An independent post-quantum cryptographic suite in C++ provides a KEM and digital signature implementation based on a security reduction to the NSLD problem. The project includes formal mathematical proofs, benchmarking tools, and production-ready binaries distributed as closed-source. The security reduction ties the scheme's hardness to the Decisional Ring-LWE problem under the Random Oracle Model. The software is intended for academic evaluation and research, with no reported vulnerabilities or exploits. The author invites community feedback on performance and structural soundness but does not report any security issues or incidents.

Potential Impact

No security vulnerabilities or exploits have been reported or identified in this cryptographic suite. The project is presented as a research and benchmarking tool without any known security threats or incidents. There is no impact on confidentiality, integrity, or availability reported.

Mitigation Recommendations

No mitigation or remediation actions are required as there are no known vulnerabilities or exploits associated with this software. The project is currently closed-source and intended for academic evaluation. Users should follow standard security practices when evaluating or integrating new cryptographic software but no specific advisories or patches apply.

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Technical Details

Source Type
reddit
Subreddit
cybersecurity
Reddit Score
0
Discussion Level
minimal
Content Source
reddit_link_post
Post Type
link
Domain
null
Newsworthiness Assessment
{"score":27,"reasons":["external_link","established_author","very_recent"],"isNewsworthy":true,"foundNewsworthy":[],"foundNonNewsworthy":[]}
Has External Source
true
Trusted Domain
false

Threat ID: 6a25964ce29bf47b50ecc119

Added to database: 6/7/2026, 4:03:24 PM

Last enriched: 6/7/2026, 4:03:32 PM

Last updated: 6/8/2026, 4:57:30 AM

Views: 16

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