许可区块链中的可验证匿名身份和访问控制
Verifiable Anonymous Identities and Access Control in Permissioned Blockchains
摘要：
在本文中，我们解决了共享许可区块链中的身份和访问控制问题。我们提出了ChainAchor系统，为区块链上的实体提供匿名但可验证的身份。ChainAchor还为寻求向区块链提交交易的实体提供访问控制，以读取/验证许可区块链上的交易。共识节点通过简单查找匿名成员公钥的（只读）列表来对共享许可区块链实施访问控制。ChainAnchor还提供了属于区块链上实体的交易的不可链接性。这允许实体在交易受到质疑（例如监管或合规要求）时可选地披露其身份，但不会影响其剩余交易的匿名性和不可链接性。
英文摘要：
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.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
