Added fuzzer

run-c-kzg-4844-fuzz.sh

@@ -0,0 +1,130 @@
+#!/bin/bash
+
+# current checkout hash
+C_KZG_4844_GIT_HASH=624aa60d01da524827123506975431aa5454c80d
+
+set -e
+
+print_msg () {
+  echo "[*]" "$1"
+}
+
+###################### parallel & backend configuration ######################
+
+parallel=false
+use_arkmsm=false
+use_bgmw=false
+backend="unknown"
+
+while [[ -n $# ]]; do
+  case $1 in
+    -p|--parallel)
+      parallel=true
+      ;;
+    --arkmsm)
+      use_arkmsm=true
+      ;;
+    --bgmw)
+      use_bgmw=true
+      ;;
+    blst|arkworks|mcl|zkcrypto|constantine)
+      backend="$1"
+      ;;
+    *)
+      break
+      ;;
+  esac
+  shift
+done
+
+if [ "$backend" == "unknown" ]; then
+  echo "Unknown backend: $backend"
+  exit 1
+fi
+
+features=""
+
+#Check if --arkmsm is specified
+if [ "$use_arkmsm" = true ]; then
+  features+="arkmsm,"
+fi
+
+# Check if --bgmw is specified
+if [ "$use_bgmw" = true ]; then
+  features+="bgmw"
+fi
+
+# Trim the trailing comma, if any
+features=$(echo "$features" | sed 's/,$//')
+
+###################### building static libs ######################
+print_msg "Compiling rust-kzg-$backend"
+cd $backend
+
+if [[ "$parallel" = true ]]; then
+  print_msg "Using parallel version"
+  cargo rustc --release --crate-type=staticlib --features="$features"
+else
+  print_msg "Using non-parallel version"
+  cargo rustc --release --crate-type=staticlib --features="$features"
+fi
+
+mv ../target/release/librust_kzg_$backend.a ../target/release/rust_kzg_$backend.a
+
+###################### cloning c-kzg-4844 ######################
+
+print_msg "Removing existing c-kzg-4844"
+rm -rf c-kzg-4844
+
+print_msg "Cloning c-kzg-4844"
+git clone https://github.com/ethereum/c-kzg-4844.git
+cd c-kzg-4844 || exit
+git -c advice.detachedHead=false checkout "$C_KZG_4844_GIT_HASH"
+git submodule update --init
+
+print_msg "Applying patches and building blst"
+cd src
+export CFLAGS="-Ofast -fno-builtin-memcpy -fPIC -Wall -Wextra -Werror"
+make blst
+unset CFLAGS
+cd ..
+
+###################### detecting os ######################
+
+case $(uname -s) in
+  "Linux")
+    CSHARP_PLATFORM=linux-x64
+    CLANG_PLATFORM=x86_64-linux
+    ;;
+  "Darwin")
+    CSHARP_PLATFORM=osx-x64
+    CLANG_PLATFORM=x86_64-darwin
+    ;;
+  *)
+    echo "FAIL: unsupported OS"
+    exit 1
+    ;;
+esac
+
+###################### fuzzing ######################
+
+pwd
+print_msg "Patching go binding"
+git apply < ../go.patch
+cd bindings/go || exit
+
+git clone https://github.com/jtraglia/kzg-fuzz.git
+cd kzg-fuzz || exit
+
+go clean -modcache
+
+echo 'replace "github.com/ethereum/c-kzg-4844" v0.3.1 => "../../../"' >> go.mod
+
+go install
+
+bash fuzz.sh
+
+# ###################### cleaning up ######################
+
+print_msg "Cleaning up"
+rm -rf c-kzg-4844