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

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:

The efficiency of the KEM and signature generation cycles under heavy concurrent loads.
The performance metrics of the compiled binaries across different architectures.
The structural soundness of the NSLD reduction approach detailed in the pre-prints.

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### 🔗 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!

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.

Defensive guidance

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.

Summary

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.

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

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AI analysisMachine-generated, updated 7 Jun 2026, 16:03 UTC

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