Function Secret Sharing

Definition ∞ Function Secret Sharing (FSS) is a cryptographic primitive that allows a function to be secretly shared among multiple parties. Each party receives a share of the function such that they cannot determine the function itself individually. However, when all parties combine their shares, they can collectively compute the function’s output without revealing the function or the inputs to each other.
Context ∞ Function Secret Sharing is a developing area in advanced cryptography, often appearing in news about privacy-preserving computations and secure multi-party computation (MPC). Its application in blockchain technology could enable confidential transactions or private smart contract execution where data remains hidden from individual nodes but verifiable collectively. Research continues on optimizing FSS for efficiency and practicality within distributed systems.