Anonymous communication system provides a secure environment without leaking metadata, which has many application scenarios in IoT
This work addresses data security and privacy issues in distributed IoT systems by enabling anonymous communication with traceability, though it appears incremental as it builds upon existing AIBET schemes.
The paper tackles the problem of secure anonymous communication in IoT by constructing a quantum-safe hierarchical identity-based encryption scheme with traceable identities (AHIBET), which provides fully anonymous ciphertexts and is proven secure under the Learning with Errors (LWE) problem in the standard model.
Anonymous Identity Based Encryption (AIBET) scheme allows a tracer to use the tracing key to reveal the recipient's identity from the ciphertext while keeping other data anonymous. This special feature makes AIBET a promising solution to distributed IoT data security. In this paper, we construct an efficient quantum-safe Hierarchical Identity-Based cryptosystem with Traceable Identities (AHIBET) with fully anonymous ciphertexts. We prove the security of the AHIBET scheme under the Learning with Errors (LWE) problem in the standard model.