RLN circuits in Circom
Home Page: https://rate-limiting-nullifier.github.io/rln-docs/
License: Apache License 2.0
The project was audited by Veridise, yAcademy fellows and internally.
RLN is a zero-knowledge gadget that enables spam prevention in anonymous environments.
The core parts of RLN are:
To learn more on RLN and how it works - check out documentation.
iden3/snarkjs#358 suggested a vulnerability of the groth16 verifier in the latest snarkjs (v0.6.11). A fix iden3/snarkjs#359 was proposed but has yet to be merged. The issue is not related to circom so it's safe to stay as is, as discussed with @curryrasul offline.
Upgrade snarkjs to the latest version as long as the fix is released.
Hi, I am researching the circuit in RLN and trying to understand how Shamir Secret Sharing works in RLN. However, I found that in the circuit, if the input x (hashed message) keeps the same, and we could using the same x to attack using the same messageId. To be more specifically, although we can detect that nullfier repeated in the sent shares, yet we could not reveal the spammer's identitySecret since the revealed (x, y) are all the same.
I am just curious if there's a solution of this or maybe it is my misunderstanding with the protocol.
Thanks
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