CE25 - Sciences et génie du logiciel - Réseaux de communication multi-usages, infrastructures de hautes performances

Towards Public Blockchain for Self-Sovereign Identities – BC4SSI

Submission summary

Identity is the foundation of trust. Managing digital identities might be complex and it is usually managed in a centralized way. However, centralized approaches are prone to failures may allow censorship. Self-sovereign identities (SSI) refer to digital identities managed in a decentralized way. Users self-manage their identities without relying on third-party providers. At each interaction between a user and a service, a proof is generated and stored so as to be able to verify and reuse the given proof later. Storage of these verifiable claims must be fully decentralized as well to avoid failures and censorship. Public blockchains are a strong candidate to deploy SSI and store verifiable claims. However, current public blockchain design suffer from various limitations preventing the deployment of SSI.The BC4SSI project will focus on the following scientific locks: alternatives to Proof-of-work security proofs, lightweight replication, scalability and energy consumption, so as to allow the use of SSI by anyone with a classical smartphone in everyday services. The project will last 48 months.

Project coordination

Romaric LUDINARD (Institut de Recherche en Informatique et Systèmes Aléatoires)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.


IRISA Institut de Recherche en Informatique et Systèmes Aléatoires

Help of the ANR 259,732 euros
Beginning and duration of the scientific project: December 2022 - 48 Months

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