feat(batcher): integrate circom verifier [not compiling yet]

Author: JuArce

crates/Cargo.lock

@@ -4,6 +4,10 @@ const GO_SRC: &str = "./gnark/verifier.go";
 const GO_OUT: &str = "libverifier.a";
 const GO_LIB: &str = "verifier";
 
+const CIRCOM_SRC: &str = "./circom/verifier.go";
+const CIRCOM_OUT: &str = "libcircomverifier.a";
+const CIRCOM_LIB: &str = "circomverifier";
+
 fn main() {
     let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
     let mut go_build = Command::new("go");
@@ -16,7 +20,18 @@ fn main() {
 
     go_build.status().expect("Go build failed");
 
+    let mut circom_build = Command::new("go");
+    circom_build
+        .arg("build")
+        .arg("-buildmode=c-archive")
+        .arg("-o")
+        .arg(out_dir.join(CIRCOM_OUT))
+        .arg(CIRCOM_SRC);
+
+    circom_build.status().expect("Circom build failed");
+
     println!("cargo:rerun-if-changed={}", GO_SRC);
+    println!("cargo:rerun-if-changed={}", CIRCOM_SRC);
     println!(
         "cargo:rustc-link-search=native={}",
         out_dir.to_str().unwrap()
@@ -27,4 +42,5 @@ fn main() {
     }
 
     println!("cargo:rustc-link-lib=static={}", GO_LIB);
+    println!("cargo:rustc-link-lib=static={}", CIRCOM_LIB);
 }

crates/batcher/build.rs

@@ -0,0 +1,5 @@
+module circom
+
+go 1.22.3
+
+require github.com/yetanotherco/go-circom-prover-verifier v0.0.0-20250617213814-1e399d9855d5 // indirect

crates/batcher/circom/go.mod

@@ -0,0 +1,148 @@
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crates/batcher/circom/go.sum

@@ -0,0 +1,52 @@
+package circom
+
+/*
+#include <stdlib.h>
+#include <stdint.h>
+
+typedef struct ListRef {
+  const uint8_t *ptr;
+  uintptr_t len;
+} ListRef;
+
+
+*/
+import "C"
+
+import (
+	"github.com/yetanotherco/go-circom-prover-verifier/parsers"
+	"github.com/yetanotherco/go-circom-prover-verifier/verifier"
+	"unsafe"
+)
+
+func listRefToBytes(listRef C.ListRef) []byte {
+	if listRef.len == 0 {
+		return []byte{}
+	}
+
+	return C.GoBytes(unsafe.Pointer(listRef.ptr), C.int(listRef.len))
+}
+
+func main() {}
+
+//export VerifyCircomGroth16ProofBN128
+func VerifyCircomGroth16ProofBN128(proofBytes C.ListRef, pubInputBytes C.ListRef, verificationKeyBytes C.ListRef) bool {
+	proofBytes = listRefToBytes(proofBytes)
+	pubInputBytes = listRefToBytes(pubInputBytes)
+	verificationKeyBytes = listRefToBytes(verificationKeyBytes)
+
+	proof, err := parsers.ParseProof(proofBytes)
+	if err != nil {
+		return false
+	}
+	public, err := parsers.ParsePublicSignals(pubInputBytes)
+	if err != nil {
+		return false
+	}
+	vk, err := parsers.ParseVk(verificationKeyBytes)
+	if err != nil {
+		return false
+	}
+
+	return verifier.Verify(vk, proof, public)
+}

crates/batcher/circom/verifier.go

@@ -0,0 +1,55 @@
+use aligned_sdk::common::types::ProvingSystemId;
+
+#[derive(Copy, Clone, Debug)]
+#[repr(C)]
+pub struct ListRef {
+    data: *const u8,
+    len: usize,
+}
+
+impl From<Vec<u8>> for ListRef {
+    fn from(v: Vec<u8>) -> Self {
+        Self::from(v.as_slice())
+    }
+}
+
+impl From<&Vec<u8>> for ListRef {
+    fn from(v: &Vec<u8>) -> Self {
+        Self::from(v.as_slice())
+    }
+}
+
+impl From<&[u8]> for ListRef {
+    fn from(v: &[u8]) -> Self {
+        let len = v.len();
+        let data = v.as_ptr().cast();
+        ListRef { data, len }
+    }
+}
+
+pub fn verify_circom(
+    proving_system: &ProvingSystemId,
+    proof: &Vec<u8>,
+    public_input: &Vec<u8>,
+    verification_key: &Vec<u8>,
+) -> bool {
+    let proof = proof.into();
+    let public_input = public_input.into();
+    let verification_key = verification_key.into();
+
+    match proving_system {
+        ProvingSystemId::CircomGroth16Bn128 => unsafe {
+            VerifyCircomGroth16ProofBN128(proof, public_input, verification_key)
+        },
+        _ => false,
+    }
+}
+
+extern "C" {
+    pub fn VerifyCircomGroth16ProofBN128(
+        proof: ListRef,
+        public_input: ListRef,
+        verification_key: ListRef,
+    ) -> bool;
+}
+

crates/batcher/src/circom/circom.rs

@@ -0,0 +1 @@
+pub mod circom;

crates/batcher/src/circom/mod.rs

@@ -57,6 +57,7 @@ use crate::telemetry::sender::TelemetrySender;
 mod config;
 mod connection;
 mod eth;
+pub mod circom;
 pub mod gnark;
 pub mod metrics;
 pub mod retry;