impl KZG based multilinear pcs (#22)

poly-iop/src/errors.rs

@@ -6,17 +6,17 @@ use displaydoc::Display;
 /// A `enum` specifying the possible failure modes of the PolyIOP.
 #[derive(Display, Debug)]
 pub enum PolyIOPErrors {
-    /// Invalid Prover
+    /// Invalid Prover: {0}
     InvalidProver(String),
-    /// Invalid Verifier
+    /// Invalid Verifier: {0}
     InvalidVerifier(String),
-    /// Invalid Proof
+    /// Invalid Proof: {0}
     InvalidProof(String),
-    /// Invalid parameters
+    /// Invalid parameters: {0}
     InvalidParameters(String),
-    /// Invalid Transcript
+    /// Invalid Transcript: {0}
     InvalidTranscript(String),
-    /// An error during (de)serialization
+    /// An error during (de)serialization: {0}
     SerializationError(ark_serialize::SerializationError),
 }
 

poly-iop/src/lib.rs

@@ -12,7 +12,7 @@ mod zero_check;
 pub use errors::PolyIOPErrors;
 pub use sum_check::SumCheck;
 pub use virtual_poly::VirtualPolynomial;
-pub use zero_check::ZeroCheck;
+pub use zero_check::{build_eq_x_r, ZeroCheck};
 
 /// Struct for PolyIOP protocol.
 /// It is instantiated with

poly-iop/src/zero_check/mod.rs

@@ -137,7 +137,9 @@ fn build_f_hat<F: PrimeField>(
 //      eq(x,y) = \prod_i=1^num_var (x_i * y_i + (1-x_i)*(1-y_i))
 // over r, which is
 //      eq(x,y) = \prod_i=1^num_var (x_i * r_i + (1-x_i)*(1-r_i))
-fn build_eq_x_r<F: PrimeField>(r: &[F]) -> Result<Rc<DenseMultilinearExtension<F>>, PolyIOPErrors> {
+pub fn build_eq_x_r<F: PrimeField>(
+    r: &[F],
+) -> Result<Rc<DenseMultilinearExtension<F>>, PolyIOPErrors> {
     let start = start_timer!(|| "zero check build eq_x_r");
 
     // we build eq(x,r) from its evaluations