It is of critical importance to design digital identity systems that ensure the privacy of citizens as well as protecting them from issuer corruption. We aim to solve this issue and propose a method for selective disclosure and privacy preserving revocation of digital credentials, using the unique homomorphic characteristics of second order Elliptic Curves and Boneh-Lynn-Shacham (BLS) signatures. Our approach ensures that users can selectively reveal credentials signed by a certain issuer, which can be interactively revoked by a quorum of other agreeing issuers without revealing the identity of users. Our goal is to protect users from issuer corruption by requiring collective agreement among multiple revocation issuers.

翻译：设计既能确保公民隐私又能保护其免受发行方腐败影响的数字身份系统至关重要。我们旨在解决这一问题，并提出一种利用二阶椭圆曲线和Boneh-Lynn-Shacham（BLS）签名的独特同态特性，实现数字凭证选择性披露与隐私保护撤销的方法。该方法确保用户能够选择性披露特定发行方签名的凭证，这些凭证可由其他达成共识的发行方通过法定数量机制交互式撤销，同时不泄露用户身份。我们的目标是通过要求多个撤销发行方达成集体共识，保护用户免受发行方腐败的影响。