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Setting note commitments, nullifiers and note footers used should revert if they are already set to prevent exploits

Low/InfoSingularity·Three Sigma · Private DeFi access · 26th February, 20243S-SG-L05

Description

Setting note commitments, nullifiers and note footers should never happen after they are already set, in which case the transaction should revert, as it is some clear attempt of an exploit.

Recommendation

Revert if they are already set.

Status

Addressed in #8b300f0.