update bandersnatch

Utils/Sources/bandersnatch/Cargo.toml

@@ -10,7 +10,7 @@ crate-type = ["staticlib"]
 cbindgen = "0.24.0"
 
 [dependencies]
-ark-ec-vrfs = { git = "https://github.com/davxy/ark-ec-vrfs", default-features = false, features = [
+ark-ec-vrfs = { git = "https://github.com/davxy/ark-ec-vrfs", rev = "8cef209", features = [
 	"bandersnatch",
 	"ring",
 	"parallel",

Utils/Sources/bandersnatch/src/bandersnatch_vrfs.rs

@@ -139,9 +139,7 @@ impl Verifier {
         aux_data: &[u8],
         signature: &[u8],
     ) -> Result<[u8; 32], ()> {
-        use ark_ec_vrfs::ring::prelude::fflonk::pcs::PcsParams;
         use ark_ec_vrfs::ring::Verifier as _;
-        use bandersnatch::VerifierKey;
 
         let signature = RingVrfSignature::deserialize_compressed(signature).unwrap();
 
@@ -155,10 +153,7 @@ impl Verifier {
         // As an alternative we can construct the verifier key using the
         // RingContext::verifier_key() method, but is more expensive.
         // In other words, we prefer computing the commitment once, when the keyset changes.
-        let verifier_key = VerifierKey::from_commitment_and_kzg_vk(
-            self.commitment.clone(),
-            ring_ctx.pcs_params.raw_vk(),
-        );
+        let verifier_key = ring_ctx.verifier_key_from_commitment(self.commitment.clone());
         let verifier = ring_ctx.verifier(verifier_key);
         if Public::verify(input, output, aux_data, &signature.proof, &verifier).is_err() {
             println!("Ring signature verification failure");