This master's thesis explores modern approaches to Customer Identity and Access Management (CIAM) in cloud environments. It analyzes the challenges of traditional systems and examines the potential of decentralized technologies. The work first discusses the fundamental concepts of IAM and CIAM, then focuses on security protocols and standards. This is followed by an analysis of CIAM solution implementations in the cloud, emphasizing leading providers. The thesis then investigates decentralized identifiers (DIDs) and verifiable credentials. The central part presents an innovative protocol for biometric authentication using decentralized storage, combining cryptography and blockchain technology.
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