Towards Public Tracing: Collaborative Traceable Secret Sharing
摘要
In a (t, n)-threshold secret sharing scheme, secrecy holds as long as fewer than t servers collude. If $$f < t$$ parties are corrupt and they sell their shares, there is no mechanism to hold them accountable in classical secret sharing schemes. Goyal–Song–Srinivasan [CRYPTO’21] introduced Traceable Secret Sharing ( $$\textsf{TSS}$$ ) and later Boneh–Partap–Rotem [CRYPTO’24] made it practical: $$f