1//! This module defines structs that are shared by all sub protocols.
 2
 3use arithmetic::VirtualPolynomial;
 4use ark_ff::PrimeField;
 5use ark_serialize::{CanonicalSerialize, SerializationError, Write};
 6
 7/// An IOP proof is a collections of
 8/// - messages from prover to verifier at each round through the interactive
 9///   protocol.
10/// - a point that is generated by the transcript for evaluation
11#[derive(Clone, Debug, Default, PartialEq)]
12pub struct IOPProof<F: PrimeField> {
13    pub point: Vec<F>,
14    pub proofs: Vec<IOPProverMessage<F>>,
15}
16
17/// A message from the prover to the verifier at a given round
18/// is a list of evaluations.
19#[derive(Clone, Debug, Default, PartialEq, Eq, CanonicalSerialize)]
20pub struct IOPProverMessage<F: PrimeField> {
21    pub(crate) evaluations: Vec<F>,
22}
23
24/// Prover State of a PolyIOP.
25pub struct IOPProverState<F: PrimeField> {
26    /// sampled randomness given by the verifier
27    pub challenges: Vec<F>,
28    /// the current round number
29    pub(crate) round: usize,
30    /// pointer to the virtual polynomial
31    pub(crate) poly: VirtualPolynomial<F>,
32}
33
34/// Prover State of a PolyIOP
35pub struct IOPVerifierState<F: PrimeField> {
36    pub(crate) round: usize,
37    pub(crate) num_vars: usize,
38    pub(crate) max_degree: usize,
39    pub(crate) finished: bool,
40    /// a list storing the univariate polynomial in evaluation form sent by the
41    /// prover at each round
42    pub(crate) polynomials_received: Vec<Vec<F>>,
43    /// a list storing the randomness sampled by the verifier at each round
44    pub(crate) challenges: Vec<F>,
45}