Blockchain-Enabled Distributed Identity-Based Ring Signature With Identity Abort for Consumer Electronics

The rise in popularity of consumer electronics has led to concerns regarding security and privacy issues in the Consumer Internet of Things (IoT). Blockchain is an ideal technological method to solve the above issues. When implementing consumer IoT with blockchain, the privacy protection in consumer electronics is a core issue that needs to be addressed. The threshold identity-based ring signature (TIBRS) not only prevents the data stored on the blockchain from being altered but also offers privacy protection for consumer electronics. However, most existing TIBRS protocols rely on key generation center (KGC), which makes these protocols vulnerable to system intrusion. Furthermore, only a handful of protocols succeed in achieving identity abort. To deal with these problems, we propose a blockchain-enabled distributed identity-based ring signature with identity abort for consumer electronics (DIBRS-CE). By leveraging the benefits of both MuSig and threshold identity-based ring signature, we construct an efficient threshold identity-based ring signature protocol that eliminates the need for KGC. Meanwhile, by introducing a commitment mechanism, we have successfully achieved the feature of identity abort. Moreover, the communication complexity of DIBRS-CE reaches O(nlogn). The security analysis and simulation experimental results demonstrate that our protocol is more efficient while maintaining security.