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zkSNARKs and Programmable Group Signatures - HackMD

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In most cases, credibility and anonymity seem directly at odds. On the one hand, anonymity allows “anons” and “throwaway accounts” on platforms like 4chan and Reddit to speak their minds in ways that they might not otherwise be comfortable with, and enables whistleblowers to publicly disclose corporate or government wrongdoing while mitigating the risk of real-world reprecussions. On the other hand, it is difficult to verify the credibility of statements that are not attached to known or trusted identities, and anonymity can help bad actors who wish to spread misinformation or harrass other community members. In this post, we present a few techniques for implementing efficient and practical “group signatures.” In combination with blockchain identity systems, which Note that slightly modified versions of this protocol can be used such that revealSigner and/or denySignature operations are not possible without revealing your secret. For example, to disable denySignature, add a salt. To di

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