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Verifiable Anonymous Identities and Access Control in Permissioned Blockchains

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arxiv 1903.04584 v1 pith:3YVZWCPJ submitted 2019-03-11 cs.CR

classification cs.CR
keywords blockchainaccesscontrolpermissionedtransactionsanonymousprovidesblockchains
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In this paper we address the issue of identity and access control within shared permissioned blockchains. We propose the ChainAchor system that provides anonymous but verifiable identities for entities on the blockchain. ChainAchor also provides access control to entities seeking to submit transactions to the blockchain to read/verify transactions on the the permissioned blockchain. Consensus nodes enforce access control to the shared permissioned blockchain by a simple look-up to a (read-only) list of anonymous members' public-keys. ChainAnchor also provides unlinkability of transactions belonging to an entity on the blockchain. This allows for an entity to optionally disclose their identity when a transaction is called into question (e.g. regulatory or compliance requirements), but without affecting the anonymity and unlinkability of their remaining transactions.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. A Taxonomic Approach to Understanding Emerging Blockchain Identity Management Systems

    cs.CR 2019-08 accept novelty 4.0 of 10

    A taxonomy of blockchain identity management systems, built from existing standards and pilots, with a survey of security considerations and use cases.

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