tlsnotary/label_decoding
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themighty1
2022-10-12 18:07:23 +03:00
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AuthDecode with the halo2 backend has been merged upstream into
https://github.com/tlsnotary/tlsn. This repo contains a snarkjs backend
which we may want to use in the future. So, leaving this repo here for now.
//! This module implements the protocol for authenticated decoding (aka AuthDecode)
//! of output labels from a garbled circuit (GC) evaluation.
//! The purpose of AuthDecode is to allow the GC evaluator to produce a zk-friendly
//! hash commitment to the GC output. Computing a zk-friendly hash directly inside
//! the GC is too expensive, hence the need for this protocol.
//!
//! Authdecode assumes a privacy-free setting for the garbler, i.e. the protocol
//! MUST ONLY start AFTER the garbler reveals all his secret GC inputs.
//! Specifically, in the context of the TLSNotary protocol, AuthDecode MUST ONLY
//! start AFTER the Notary (who is the garbler) has revealed all of his TLS session
//! keys' shares.