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Related Experiment Video

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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

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Post-Quantum Secure Identity-Based Proxy Blind Signature Scheme on a Lattice.

Fengyin Li¹, Mengjiao Yang¹, Zhihao Song¹

¹School of Computer Science, Qufu Normal University, Rizhao 276800, China.

Entropy (Basel, Switzerland)

|August 26, 2023

Summary

This study introduces a new quantum-resistant identity-based proxy blind signature (ID-Proxy-BS) scheme. It enhances privacy and simplifies key management for digital signatures, offering improved security against future quantum computing threats.

Keywords:

blind signature e-voting identity proxy blind signature quantum attack

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Area of Science:

Cryptography
Information Security
Quantum Computing

Background:

Blind signatures are crucial for privacy-preserving applications.
Existing proxy blind signature (Proxy-BS) schemes lack quantum resistance and rely on Public Key Infrastructure (PKI), causing management overhead.
Delegation of signature rights is necessary when the original signer is unavailable.

Purpose of the Study:

To propose a post-quantum secure identity-based proxy blind signature (ID-Proxy-BS) scheme.
To simplify key management by moving away from traditional PKI.
To develop a quantum-resistant proxy e-voting system.

Main Methods:

Developed a novel ID-Proxy-BS scheme utilizing lattice-based cryptography and a matrix cascade technique.
Proved the security of the scheme under the random oracle model (ROM).
Applied the ID-Proxy-BS scheme to an e-voting system.

Main Results:

The proposed ID-Proxy-BS scheme is secure against quantum attacks.
The scheme guarantees correctness, blindness, and unforgeability.
The developed e-voting system is quantum-resistant and efficient.

Conclusions:

The novel lattice-based ID-Proxy-BS scheme offers a quantum-secure and efficient alternative for privacy-preserving digital signatures.
The proposed e-voting system provides a robust solution for secure and private electronic voting in the quantum era.
This research addresses the limitations of current Proxy-BS schemes concerning quantum threats and PKI dependencies.