Privacy-preserving user identity in Identity-as-a-Service

@article{Vo2018PrivacypreservingUI,
  title={Privacy-preserving user identity in Identity-as-a-Service},
  author={Tri Hoang Vo and Woldemar F. Fuhrmann and Klaus Peter Fischer-Hellmann},
  journal={2018 21st Conference on Innovation in Clouds, Internet and Networks and Workshops (ICIN)},
  year={2018},
  pages={1-8}
}
In Federated Identity Management, providers from different security domains exchange messages containing authentication and authorisation credentials of users. As a result, a user can use his Personal Identifiable Information (PII) from one or more Identity Providers to gain access to other sites. Disseminating PII over intermediaries also requires protecting PII from being misused and unauthorised access. Identity-as-a- Service (IDaaS) provides a federated identity for users to access multiple… 

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