A User-Centric System for Verified Identities on the Bitcoin Blockchain

Augot, Daniel; Chabanne, Hervé; Chenevier, Thomas; George, William R.; Lambert, Laurent A.

doi:10.1007/978-3-319-67816-0_22

Cited by 42 publications

(22 citation statements)

References 8 publications

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“…Presentations can take the form of credentials to benefit from the properties that credentials have. Such presentations can also be used to derive a limited number of presentations, like in the scheme described in [67].…”

Section: Benefits Of Credential Propertiesmentioning

confidence: 99%

A Taxonomic Approach to Understanding Emerging Blockchain Identity Management Systems

Lesavre

Varin²,

Mell³

et al. 2020

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Identity management systems (IDMSs) are widely used to provision user identities while managing authentication, authorization, and data sharing within organizations and on the web. Traditional identity systems typically suffer from single points of failure, lack of interoperability, and privacy issues, such as enabling mass data collection and user tracking. Blockchain technology has the potential to alleviate these concerns: it can support the ability for users to control the custody of their own identifiers and credentials, enabling novel data ownership and governance models with built-in control and consent mechanisms. Hence, blockchain-based IDMSs, which could benefit both users and businesses, are beginning to proliferate. This work categorizes these systems into a taxonomy based on differences in blockchain architectures, governance models, and other salient features. Context is provided for the taxonomy through the description of related terms, emerging standards, and use cases while highlighting relevant security and privacy considerations. Keywords blockchain; data custody; data ownership; decentralized identifier; distributed ledger; identity management; public key infrastructure; self-sovereign identity; smart contract; user-controlled identity wallet; verifiable credential; zero-knowledge proof Disclaimer Any mention of commercial products or reference to commercial organizations is for information only; it does not imply recommendation or endorsement by the National Institute of Standards and Technology (NIST), nor does it imply that the products mentioned are necessarily the best available for the purpose.

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Section: Benefits Of Credential Propertiesmentioning

confidence: 99%

A Taxonomic Approach to Understanding Emerging Blockchain Identity Management Systems

Lesavre

Varin²,

Mell³

et al. 2020

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“…Another recent trend in IdM is the application of blockchain [25]. Hence, publications have appeared in recent years e.g., conceptualizing essential components of selfsovereign identity [26], user-centric identity built on blockchain [27] and, counter arguments refuting some of widely-held misconceptions on blockchain as a new trust mechanism [28].…”

Section: Related Literaturementioning

confidence: 99%

The Review of Non-Technical Assumptions in Digital Identity Architectures

Bazarhanova¹,

Smolander²

2020

Proceedings of the Annual Hawaii International Conference on System Sciences

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The literature on digital identity management systems (IdM) is abundant and solutions vary by technology components and non-technical requirements. In the long run, however, there is a need for exchanging identities across domains or even borders, which requires interoperable solutions and flexible architectures. This article aims to give an overview of the current research on digital identity management. We conduct a systematic literature review of digital identity solution architectures and extract their inherent non-technical assumptions. The findings show that solution designs can be based on organizational, business and trust assumptions as well as human-user assumptions. Namely, establishing the trust relationships and collaborations among participating organizations; human-users capability for maintaining private cryptographic material or the assumptions that win-win business models could be easily identified. By reviewing the key findings of solutions proposed and looking at the differences and commonalities of their technical, organizational and social requirements, we discuss their potential real-life inhibitors and identify opportunities for future research in IdM.

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“…For instance, a presentation may have the ability to be accessed conditionally (see Entitlement to a User-mintable Non-fungible Token in Section 4.4.2.1) and to be transferable (see Non-fungible Token Registry in Section 4.4.2.1). Such presentations can also be used to derive a limited number of presentations, like in the scheme described in [62].…”

Section: Benefits Of Credential Propertiesmentioning

confidence: 99%

A Taxonomic Approach to Understanding Emerging Blockchain Identity Management Systems

2019

Preprint

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Identity management systems (IDMSs) are widely used to provision user identities while managing authentication, authorization, and data sharing both within organizations as well as on the Internet more broadly. Traditional identity systems typically suffer from single points of failure, lack of interoperability, and privacy issues such as encouraging mass data collection and user tracking. Blockchain technology has the potential to support novel data ownership and governance models with built-in control and consent mechanisms, which may benefit both users and businesses by alleviating these concerns; as a result, blockchain-based IDMSs are beginning to proliferate. This work categorizes these systems into a taxonomy based on differences in architecture, governance models, and other salient features. We provide context for the taxonomy by describing related terms, emerging standards, and use cases, while highlighting relevant security and privacy considerations. AudienceThis publication is designed for readers with some knowledge of blockchain technology who wish to understand at a high level how blockchain identity management systems work. It is not intended to be a technical guide; the discussion of the technology provides a conceptual understanding. Note that some examples, figures, and tables are simplified to fit the audience. Executive SummaryIdentity management systems allow one to provision identities to users, while managing authentication, authorization, and data sharing both within organizations as well as on the Internet. With traditional identity management, organizations usually store the credentials (e.g., a password) of each user they interact with, or with federated models, they use a third party to store this information. This creates interoperability, security, and privacy concerns due to the privileged position of the entity that controls the identity information.A possible solution to these issues is found in the use of blockchain technologies for identity management: they can reduce, or even remove, the need for a third party. At a high-level, they can transform data governance and ownership models, and benefit both individual users and businesses. More specifically, it can enable users to control their data and share select personal information to relying parties. It can also enable businesses to streamline their operations by relying on verified user information without having to maintain the infrastructure themselves.A large number of blockchain-based identity management approaches are currently being explored, implemented, and commercialized. Many of them use, or plan to use, smart contracts, the privacy capabilities gained from zero-knowledge protocols, and other scalability solutions atop the underlying blockchain. This is an emerging field and the features, capabilities, security, and privacy of these proposed systems are often unclear.Identity is a far-reaching topic, and the systems being designed to support it can take architectural forms that are both on-chain and off-chain, and fo...

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A User-Centric System for Verified Identities on the Bitcoin Blockchain

Cited by 42 publications

References 8 publications

A Taxonomic Approach to Understanding Emerging Blockchain Identity Management Systems

A Taxonomic Approach to Understanding Emerging Blockchain Identity Management Systems

The Review of Non-Technical Assumptions in Digital Identity Architectures

A Taxonomic Approach to Understanding Emerging Blockchain Identity Management Systems

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