An Identity-Based Anti-Quantum Privacy-Preserving Blind Authentication in Wireless Sensor Networks

Area of Science:

• Cryptography
• Computer Science
• Information Security

Background:

• Internet of Things (IoT) devices are integral to Smart City development, enabling applications like e-payment and e-voting.
• Existing authentication protocols based on traditional number theory are vulnerable to quantum computer attacks, posing risks to user privacy and data integrity.
• The need for quantum-resistant security solutions is paramount for protecting sensitive information in interconnected systems.

Purpose of the Study:

• To propose a new identity-based blind signature scheme resistant to quantum computer attacks.
• To enhance user privacy and ensure trustworthy big data in smart city applications.
• To develop a secure e-payment protocol utilizing the proposed scheme.

Main Methods:

• Developed a novel identity-based blind signature scheme leveraging number theoretic research unit lattices.
• Employed a rejection sampling theorem, eliminating the need for complex trapdoor construction.
• Designed an e-payment protocol and proved the scheme's security in the random oracle model.

Main Results:

• The proposed scheme is proven secure, offering confidentiality, integrity, and non-repudiation.
• It demonstrates resistance to quantum computer attacks without relying on complex public key infrastructure.
• Outperforms traditional identity-based blind signature schemes in signing and verification speeds.
• Surpasses other lattice-based blind signature schemes in signing speed, verification speed, and signing secret key size.

Conclusions:

• The novel lattice-based blind signature scheme provides a robust and efficient solution for secure authentication in smart city environments.
• This scheme effectively addresses the vulnerabilities of current protocols against quantum computing threats.
• The proposed scheme offers significant performance advantages and enhanced security features for e-payment and e-voting systems.