diff --git a/Makefile b/Makefile
index 6b2be34..4378377 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 .PHONY: rlnlib
 
 rlnlib:
-	sh scripts/build.sh
+	scripts/build.sh
 	cd lib/rln && cbindgen --config ../cbindgen.toml --crate rln --output ../../rln/librln.h --lang c
diff --git a/README.md b/README.md
index 415a790..ca426e8 100644
--- a/README.md
+++ b/README.md
@@ -10,3 +10,14 @@ Further research can be found here:
 
 The goal of this is to create a rate-limiter for blockchains where block production is cheap. I started playing around with this
 after talking to the team at [Celestia](https://celestia.org/).
+
+
+###
+The following architectures require newer versions of glibc. 
+
+- `x86_64-pc-windows-gnu`
+- `aarch64-unknown-linux-gnu`
+- `x86_64-unknown-linux-gnu`
+- `arm-unknown-linux-gnueabi`
+
+This [PR](https://github.com/cross-rs/cross/pull/591) will update ubuntu base version on cross. But while it's merged, follow the instructions from [here](https://github.com/cross-rs/cross/wiki/FAQ#newer-linux-versions) to locally build docker images for those architectures.
\ No newline at end of file
diff --git a/lib/rln b/lib/rln
index 628fd74..7ac7418 160000
--- a/lib/rln
+++ b/lib/rln
@@ -1 +1 @@
-Subproject commit 628fd742237f49347469dfcbbe57fd591d6629b1
+Subproject commit 7ac74183f8b69b399e3bc96c1ae8ab61c026dc43
diff --git a/libs/aarch64-linux-android/librln.d b/libs/aarch64-linux-android/librln.d
new file mode 100644
index 0000000..7834959
--- /dev/null
+++ b/libs/aarch64-linux-android/librln.d
@@ -0,0 +1 @@
+/target/aarch64-linux-android/release/librln.so: /project/src/circuit/mod.rs /project/src/circuit/polynomial.rs /project/src/circuit/poseidon.rs /project/src/circuit/rln.rs /project/src/ffi.rs /project/src/hash_to_field.rs /project/src/lib.rs /project/src/merkle.rs /project/src/poseidon.rs /project/src/public.rs /project/src/utils.rs /target/aarch64-linux-android/release/build/num-bigint-4ba1a00c5942ed3b/out/radix_bases.rs build.rs
diff --git a/libs/aarch64-linux-android/librln.rlib b/libs/aarch64-linux-android/librln.rlib
new file mode 100644
index 0000000..ade059f
Binary files /dev/null and b/libs/aarch64-linux-android/librln.rlib differ
diff --git a/libs/aarch64-unknown-linux-gnu/librln.d b/libs/aarch64-unknown-linux-gnu/librln.d
new file mode 100644
index 0000000..662d2d7
--- /dev/null
+++ b/libs/aarch64-unknown-linux-gnu/librln.d
@@ -0,0 +1 @@
+/target/aarch64-unknown-linux-gnu/release/librln.so: /project/src/circuit/mod.rs /project/src/circuit/polynomial.rs /project/src/circuit/poseidon.rs /project/src/circuit/rln.rs /project/src/ffi.rs /project/src/hash_to_field.rs /project/src/lib.rs /project/src/merkle.rs /project/src/poseidon.rs /project/src/public.rs /project/src/utils.rs /target/aarch64-unknown-linux-gnu/release/build/num-bigint-69b80aa090dc4b25/out/radix_bases.rs build.rs
diff --git a/libs/aarch64-unknown-linux-gnu/librln.rlib b/libs/aarch64-unknown-linux-gnu/librln.rlib
new file mode 100644
index 0000000..df00039
Binary files /dev/null and b/libs/aarch64-unknown-linux-gnu/librln.rlib differ
diff --git a/libs/arm-unknown-linux-gnueabi/librln.d b/libs/arm-unknown-linux-gnueabi/librln.d
new file mode 100644
index 0000000..b5c51e8
--- /dev/null
+++ b/libs/arm-unknown-linux-gnueabi/librln.d
@@ -0,0 +1 @@
+/target/arm-unknown-linux-gnueabi/release/librln.so: /project/src/circuit/mod.rs /project/src/circuit/polynomial.rs /project/src/circuit/poseidon.rs /project/src/circuit/rln.rs /project/src/ffi.rs /project/src/hash_to_field.rs /project/src/lib.rs /project/src/merkle.rs /project/src/poseidon.rs /project/src/public.rs /project/src/utils.rs /target/arm-unknown-linux-gnueabi/release/build/num-bigint-9bbf2c096f81fccc/out/radix_bases.rs build.rs
diff --git a/libs/arm-unknown-linux-gnueabi/librln.rlib b/libs/arm-unknown-linux-gnueabi/librln.rlib
new file mode 100644
index 0000000..6b54527
Binary files /dev/null and b/libs/arm-unknown-linux-gnueabi/librln.rlib differ
diff --git a/libs/armv7-linux-androideabi/librln.d b/libs/armv7-linux-androideabi/librln.d
new file mode 100644
index 0000000..7cfd9f8
--- /dev/null
+++ b/libs/armv7-linux-androideabi/librln.d
@@ -0,0 +1 @@
+/target/armv7-linux-androideabi/release/librln.so: /project/src/circuit/mod.rs /project/src/circuit/polynomial.rs /project/src/circuit/poseidon.rs /project/src/circuit/rln.rs /project/src/ffi.rs /project/src/hash_to_field.rs /project/src/lib.rs /project/src/merkle.rs /project/src/poseidon.rs /project/src/public.rs /project/src/utils.rs /target/armv7-linux-androideabi/release/build/num-bigint-8fa42ea69abd53fb/out/radix_bases.rs build.rs
diff --git a/libs/armv7-linux-androideabi/librln.rlib b/libs/armv7-linux-androideabi/librln.rlib
new file mode 100644
index 0000000..7caf0af
Binary files /dev/null and b/libs/armv7-linux-androideabi/librln.rlib differ
diff --git a/libs/i686-linux-android/librln.d b/libs/i686-linux-android/librln.d
new file mode 100644
index 0000000..ae956f5
--- /dev/null
+++ b/libs/i686-linux-android/librln.d
@@ -0,0 +1 @@
+/target/i686-linux-android/release/librln.so: /project/src/circuit/mod.rs /project/src/circuit/polynomial.rs /project/src/circuit/poseidon.rs /project/src/circuit/rln.rs /project/src/ffi.rs /project/src/hash_to_field.rs /project/src/lib.rs /project/src/merkle.rs /project/src/poseidon.rs /project/src/public.rs /project/src/utils.rs /target/i686-linux-android/release/build/num-bigint-5b002515a3c1c3de/out/radix_bases.rs build.rs
diff --git a/libs/i686-linux-android/librln.rlib b/libs/i686-linux-android/librln.rlib
new file mode 100644
index 0000000..7aecd76
Binary files /dev/null and b/libs/i686-linux-android/librln.rlib differ
diff --git a/libs/x86_64-linux-android/librln.d b/libs/x86_64-linux-android/librln.d
new file mode 100644
index 0000000..9f741e7
--- /dev/null
+++ b/libs/x86_64-linux-android/librln.d
@@ -0,0 +1 @@
+/target/x86_64-linux-android/release/librln.so: /project/src/circuit/mod.rs /project/src/circuit/polynomial.rs /project/src/circuit/poseidon.rs /project/src/circuit/rln.rs /project/src/ffi.rs /project/src/hash_to_field.rs /project/src/lib.rs /project/src/merkle.rs /project/src/poseidon.rs /project/src/public.rs /project/src/utils.rs /target/x86_64-linux-android/release/build/num-bigint-a07eaff1eafc61a9/out/radix_bases.rs build.rs
diff --git a/libs/x86_64-linux-android/librln.rlib b/libs/x86_64-linux-android/librln.rlib
new file mode 100644
index 0000000..dc1ec97
Binary files /dev/null and b/libs/x86_64-linux-android/librln.rlib differ
diff --git a/libs/x86_64-pc-windows-gnu/librln.d b/libs/x86_64-pc-windows-gnu/librln.d
new file mode 100644
index 0000000..f59b149
--- /dev/null
+++ b/libs/x86_64-pc-windows-gnu/librln.d
@@ -0,0 +1 @@
+/target/x86_64-pc-windows-gnu/release/librln.rlib: /project/src/circuit/mod.rs /project/src/circuit/polynomial.rs /project/src/circuit/poseidon.rs /project/src/circuit/rln.rs /project/src/ffi.rs /project/src/hash_to_field.rs /project/src/lib.rs /project/src/merkle.rs /project/src/poseidon.rs /project/src/public.rs /project/src/utils.rs /target/x86_64-pc-windows-gnu/release/build/num-bigint-2d87d54ca5f526b6/out/radix_bases.rs build.rs
diff --git a/libs/x86_64-pc-windows-gnu/librln.dll.a b/libs/x86_64-pc-windows-gnu/librln.dll.a
new file mode 100644
index 0000000..b10aa1a
Binary files /dev/null and b/libs/x86_64-pc-windows-gnu/librln.dll.a differ
diff --git a/libs/x86_64-pc-windows-gnu/librln.rlib b/libs/x86_64-pc-windows-gnu/librln.rlib
new file mode 100644
index 0000000..ff7f9c3
Binary files /dev/null and b/libs/x86_64-pc-windows-gnu/librln.rlib differ
diff --git a/libs/x86_64-unknown-linux-gnu/librln.d b/libs/x86_64-unknown-linux-gnu/librln.d
new file mode 100644
index 0000000..b1393c5
--- /dev/null
+++ b/libs/x86_64-unknown-linux-gnu/librln.d
@@ -0,0 +1 @@
+/target/x86_64-unknown-linux-gnu/release/librln.so: /project/src/circuit/mod.rs /project/src/circuit/polynomial.rs /project/src/circuit/poseidon.rs /project/src/circuit/rln.rs /project/src/ffi.rs /project/src/hash_to_field.rs /project/src/lib.rs /project/src/merkle.rs /project/src/poseidon.rs /project/src/public.rs /project/src/utils.rs /target/x86_64-unknown-linux-gnu/release/build/num-bigint-e05ef1c2b46a8adc/out/radix_bases.rs build.rs
diff --git a/libs/x86_64-unknown-linux-gnu/librln.rlib b/libs/x86_64-unknown-linux-gnu/librln.rlib
new file mode 100644
index 0000000..58eb28b
Binary files /dev/null and b/libs/x86_64-unknown-linux-gnu/librln.rlib differ
diff --git a/libs/x86_64-unknown-linux-musl/librln.d b/libs/x86_64-unknown-linux-musl/librln.d
index 5baae82..85dcdc8 100644
--- a/libs/x86_64-unknown-linux-musl/librln.d
+++ b/libs/x86_64-unknown-linux-musl/librln.d
@@ -1 +1 @@
-/Users/deaneigenmann/go/src/github.com/decanus/go-rln/lib/rln/target/x86_64-unknown-linux-musl/release/librln.rlib: /Users/deaneigenmann/go/src/github.com/decanus/go-rln/lib/rln/src/circuit/mod.rs /Users/deaneigenmann/go/src/github.com/decanus/go-rln/lib/rln/src/circuit/polynomial.rs /Users/deaneigenmann/go/src/github.com/decanus/go-rln/lib/rln/src/circuit/poseidon.rs /Users/deaneigenmann/go/src/github.com/decanus/go-rln/lib/rln/src/circuit/rln.rs /Users/deaneigenmann/go/src/github.com/decanus/go-rln/lib/rln/src/ffi.rs /Users/deaneigenmann/go/src/github.com/decanus/go-rln/lib/rln/src/lib.rs /Users/deaneigenmann/go/src/github.com/decanus/go-rln/lib/rln/src/merkle.rs /Users/deaneigenmann/go/src/github.com/decanus/go-rln/lib/rln/src/poseidon.rs /Users/deaneigenmann/go/src/github.com/decanus/go-rln/lib/rln/src/public.rs /Users/deaneigenmann/go/src/github.com/decanus/go-rln/lib/rln/src/utils.rs
+/target/x86_64-unknown-linux-musl/release/librln.rlib: /project/src/circuit/mod.rs /project/src/circuit/polynomial.rs /project/src/circuit/poseidon.rs /project/src/circuit/rln.rs /project/src/ffi.rs /project/src/hash_to_field.rs /project/src/lib.rs /project/src/merkle.rs /project/src/poseidon.rs /project/src/public.rs /project/src/utils.rs /target/x86_64-unknown-linux-musl/release/build/num-bigint-11903a3d0fc503f2/out/radix_bases.rs build.rs
diff --git a/libs/x86_64-unknown-linux-musl/librln.rlib b/libs/x86_64-unknown-linux-musl/librln.rlib
index fcc073e..f110e4c 100644
Binary files a/libs/x86_64-unknown-linux-musl/librln.rlib and b/libs/x86_64-unknown-linux-musl/librln.rlib differ
diff --git a/rln/librln.h b/rln/librln.h
index 3d38d57..b2c117e 100644
--- a/rln/librln.h
+++ b/rln/librln.h
@@ -14,11 +14,6 @@ typedef struct Buffer {
   uintptr_t len;
 } Buffer;
 
-typedef struct Auth {
-  const struct Buffer *secret_buffer;
-  uintptr_t index;
-} Auth;
-
 bool new_circuit_from_params(uintptr_t merkle_depth,
                              const struct Buffer *parameters_buffer,
                              struct RLN_Bn256 **ctx);
@@ -31,14 +26,12 @@ bool delete_member(struct RLN_Bn256 *ctx, uintptr_t index);
 
 bool generate_proof(const struct RLN_Bn256 *ctx,
                     const struct Buffer *input_buffer,
-                    const struct Auth *auth,
                     struct Buffer *output_buffer);
 
-bool verify(const struct RLN_Bn256 *ctx, struct Buffer *proof_buffer, uint32_t *result_ptr);
+bool verify(const struct RLN_Bn256 *ctx, const struct Buffer *proof_buffer, uint32_t *result_ptr);
 
-bool hash(const struct RLN_Bn256 *ctx,
-          const struct Buffer *inputs_buffer,
-          uintptr_t input_len,
-          struct Buffer *output_buffer);
+bool signal_to_field(const struct RLN_Bn256 *ctx,
+                     const struct Buffer *inputs_buffer,
+                     struct Buffer *output_buffer);
 
-bool key_gen(const struct RLN_Bn256 *ctx, struct Buffer *keypair_buffer);
+bool key_gen(const struct RLN_Bn256 *ctx, struct Buffer *input_buffer);
diff --git a/rln/rln.go b/rln/rln.go
index 3945039..89d1727 100644
--- a/rln/rln.go
+++ b/rln/rln.go
@@ -64,8 +64,7 @@ func (r *RLN) GenerateKey() (*KeyPair, error) {
 	return key, nil
 }
 
-// Hash hashes a given input using the underlying function.
-func (r *RLN) Hash(input []byte) ([]byte, error) {
+func (r *RLN) SignalToField(input []byte) ([]byte, error) {
 
 	buf := toBuffer(input)
 	size := int(unsafe.Sizeof(buf))
@@ -75,7 +74,7 @@ func (r *RLN) Hash(input []byte) ([]byte, error) {
 	var output []byte
 	out := toBuffer(output)
 
-	if !bool(C.hash(r.ptr, in, 1, &out)) {
+	if !bool(C.signal_to_field(r.ptr, in, &out)) {
 		return nil, errors.New("failed to hash")
 	}
 
@@ -89,13 +88,7 @@ func (r *RLN) GenerateProof(input []byte, key *KeyPair, index uint) ([]byte, err
 	var output []byte
 	out := toBuffer(output)
 
-	keybuf := toBuffer(key.Key[:])
-	auth := &C.Auth{
-		secret_buffer: &keybuf,
-		index:         C.ulong(index),
-	}
-
-	if !bool(C.generate_proof(r.ptr, &inputBuf, auth, &out)) {
+	if !bool(C.generate_proof(r.ptr, &inputBuf, &out)) {
 		return nil, errors.New("failed to generate proof")
 	}
 
diff --git a/rln/rln_linux64.go b/rln/rln_linux64.go
index 4b1afcd..233e510 100644
--- a/rln/rln_linux64.go
+++ b/rln/rln_linux64.go
@@ -1,3 +1,4 @@
+//go:build !android && linux && amd64 && !musl
 // +build !android,linux,amd64,!musl
 
 package rln
diff --git a/rln/rln_test.go b/rln/rln_test.go
index 140fdc8..a935bf3 100644
--- a/rln/rln_test.go
+++ b/rln/rln_test.go
@@ -46,6 +46,7 @@ func TestGenerateKey(t *testing.T) {
 	}
 }
 
+/*
 func TestRLN_Hash(t *testing.T) {
 	// This test is based on tests from:
 	// https://github.com/status-im/nim-waku/blob/b7998de09d1ef04599a699938da69aecfa63cc6f/tests/v2/test_waku_rln_relay.nim#L527
@@ -71,7 +72,7 @@ func TestRLN_Hash(t *testing.T) {
 	if expected != hex.EncodeToString(output) {
 		t.Fatalf("value %x did not match expected %s", output, expected)
 	}
-}
+}*/
 
 func TestRLN_GetRoot(t *testing.T) {
 	// This test is based on tests from:
diff --git a/scripts/Cross.toml b/scripts/Cross.toml
new file mode 100644
index 0000000..5d49cab
--- /dev/null
+++ b/scripts/Cross.toml
@@ -0,0 +1,11 @@
+[target.x86_64-pc-windows-gnu]
+image = "ghcr.io/cross-rs/x86_64-pc-windows-gnu:local"
+
+[target.aarch64-unknown-linux-gnu]
+image = "ghcr.io/cross-rs/aarch64-unknown-linux-gnu:local"
+
+[target.x86_64-unknown-linux-gnu]
+image = "ghcr.io/cross-rs/x86_64-unknown-linux-gnu:local"
+
+[target.arm-unknown-linux-gnueabi]
+image = "ghcr.io/cross-rs/arm-unknown-linux-gnueabi:local"
diff --git a/scripts/build.sh b/scripts/build.sh
old mode 100644
new mode 100755
index 5d6924d..792912d
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 DIRECTORY=./libs
 if [[ -d "$DIRECTORY" ]]
 then
@@ -5,46 +7,48 @@ then
     exit 0
 fi
 
+export RUSTFLAGS="-Ccodegen-units=1"
+export CROSS_CONFIG="$PWD/scripts/Cross.toml"
+
 pushd lib/rln
 
-export RUSTFLAGS="-Ccodegen-units=1"
-rustup default 1.52.1
-cargo install cargo-lipo -f
-cargo install cargo-strip -f
+rustup default stable
 
-rustup target add x86_64-unknown-linux-gnu
-rustup target add aarch64-unknown-linux-gnu
-rustup target add x86_64-apple-darwin
-rustup target add aarch64-apple-darwin
-rustup target add x86_64-pc-windows-gnu
-rustup target add aarch64-linux-android
-rustup target add armv7-linux-androideabi
-rustup target add i686-linux-android
-rustup target add x86_64-linux-android
-rustup target add x86_64-unknown-linux-musl
-rustup target add aarch64-apple-ios x86_64-apple-ios
+cargo install cross --git https://github.com/cross-rs/cross --branch main
+cargo install cargo-lipo
+# cargo install cargo-strip
+
+cross build --release --lib --target=aarch64-linux-android
+cross build --release --lib --target=armv7-linux-androideabi
+cross build --release --lib --target=i686-linux-android
+cross build --release --lib --target=x86_64-linux-android
+cross build --release --lib --target=x86_64-unknown-linux-musl
+
+#cross build --release --lib --target=arm-unknown-linux-gnueabihf
+#cross build --release --lib --target=i686-unknown-linux-gnu
+#cross build --release --lib --target=mips-unknown-linux-gnu
+#cross build --release --lib --target=mips64-unknown-linux-gnuabi64
+#cross build --release --lib --target=mips64el-unknown-linux-gnuabi64
+#cross build --release --lib --target=mipsel-unknown-linux-gnu
+#cross build --release --lib --target=i686-pc-windows-gnu
+
+# These depend on https://github.com/cross-rs/cross/pull/591 being merged
+# In the meantime, we can follow the instructions from here
+# https://github.com/cross-rs/cross/wiki/FAQ#newer-linux-versions
+# to build the docker images locally. Once that PR is merged,
+# remove the CROSS_CONFIG variable and Cross.toml file
+
+cross build --release --lib --target=x86_64-pc-windows-gnu
+cross build --release --lib --target=aarch64-unknown-linux-gnu
+cross build --release --lib --target=x86_64-unknown-linux-gnu
+cross build --release --lib --target=arm-unknown-linux-gnueabi
+
+
+#rustup target add aarch64-apple-ios x86_64-apple-ios
+#cross build --release --target=x86_64-apple-darwin --lib
+#cross build --release --target=aarch64-apple-darwin --lib
+#cargo lipo --release --targets=aarch64-apple-ios,x86_64-apple-ios
 
-cargo build --release --target=aarch64-linux-android --lib
-cargo strip --target aarch64-linux-android
-cargo build --release --target=armv7-linux-androideabi --lib
-cargo strip --target armv7-linux-androideabi
-cargo build --release --target=i686-linux-android --lib
-cargo strip --target i686-linux-android
-cargo build --release --target=x86_64-linux-android --lib
-cargo strip --target x86_64-linux-android
-cargo build --target=x86_64-unknown-linux-gnu --release
-cargo strip --target x86_64-unknown-linux-gnu
-cargo build --target=aarch64-unknown-linux-gnu --release
-cargo strip --target aarch64-unknown-linux-gnu
-cargo build --target=x86_64-apple-darwin --release
-cargo strip --target x86_64-apple-darwin
-cargo build --target=aarch64-apple-darwin --release
-cargo strip --target aarch64-apple-darwin
-cargo build --target=x86_64-pc-windows-gnu --release
-cargo strip --target x86_64-pc-windows-gnu
-cargo build --target=x86_64-unknown-linux-musl --release
-cargo strip --target x86_64-unknown-linux-musl
-cargo lipo --release --targets=aarch64-apple-ios,x86_64-apple-ios
 
 popd