کنفرانس مهندسی برق ایران

صفحه اصلی / سی و چهارمین کنفرانس بین المللی مهندسی برق

A Hybrid Chaos-Assisted Key Derivation Framework for Secure IoT Data Encryption Using AES-256-GCM

نویسندگان :

Reza Sedagheh Maskan Sadigh¹ Shadi Janbabaei² Peyman Ayubi³

1- دانشگاه آزاد شبستر 2- دانشگاه شاهد تهران 3- دانشگاه آزاد ارومیه

کلمات کلیدی :

Internet of Things،Smart Cities،Key Generation،Chaotic Maps،SHA-256،AES-GCM،Data Security

چکیده :

The Internet of Things (IoT) is a fundamental enabling technology for smart city infrastructures, where a large number of heterogeneous devices continuously exchange sensitive data over insecure networks. Ensuring confidentiality, integrity, and authenticity of transmitted data remains a major challenge, especially under resource constraints. In this paper, a secure and standard-compliant encryption framework for IoT applications is proposed by combining a generalized three-dimensional (3D) sine chaotic map with conventional cryptographic primitives. Unlike chaos-based schemes that directly employ chaotic sequences as ciphers, the proposed approach utilizes the chaotic map solely as a high-entropy source for symmetric key generation. After quantization of the chaotic outputs, a 256-bit secret key is derived using the SHA-256 hash function. The actual data encryption is then performed using the AES-256-GCM algorithm, which provides authenticated encryption with associated data (AEAD). This separation between entropy generation and cryptographic encryption significantly improves security robustness while maintaining computational efficiency. Experimental evaluations demonstrate that the proposed scheme satisfies randomness requirements and is suitable for secure IoT data transmission in smart city environments.