Secure and Scalable Identity Management for Iot Devices in Cloud Environments

Abstract

The rapid proliferation of Internet of Things (IoT) devices has revolutionized industries but also introduced significant security concerns, particularly in identity management. Traditional identity management systems are not equipped to handle the scale, heterogeneity, and constrained nature of IoT devices. This paper proposes a secure and scalable identity management framework leveraging cloud-native technologies such as blockchain, public key infrastructure (PKI), and Identity-as-a-Service (IDaaS). By integrating lightweight cryptographic techniques and decentralized trust mechanisms, the framework aims to authenticate billions of devices while ensuring minimal latency, high throughput, and resilience against cyber threats. The paper also explores federated identity models and their adaptability for IoT-cloud ecosystems. Evaluation metrics such as latency, scalability, and security effectiveness are discussed along with comparative analyses.

Keywords: Blockchain, decentralized authentication, PKI, identity as a service (IDaaS), IoT security, federated identity, cloud-native architecture