added tree funcs

libs/aarch64-apple-darwin/librln.d

@@ -1 +0,0 @@
-/Users/deaneigenmann/go/src/github.com/decanus/go-rln/lib/rln/target/aarch64-apple-darwin/release/librln.dylib: /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

libs/x86_64-apple-darwin/librln.d

@@ -1 +0,0 @@
-/Users/deaneigenmann/go/src/github.com/decanus/go-rln/lib/rln/target/x86_64-apple-darwin/release/librln.dylib: /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

libs/x86_64-unknown-linux-musl/librln.d

@@ -1 +0,0 @@
-/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

rln/librln.h

@@ -14,22 +14,31 @@ 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);
 
+bool get_root(const struct RLN_Bn256 *ctx, struct Buffer *output_buffer);
+
+bool update_next_member(struct RLN_Bn256 *ctx, const struct Buffer *input_buffer);
+
+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,
-            const struct Buffer *proof_buffer,
-            const struct Buffer *public_inputs_buffer,
-            uint32_t *result_ptr);
+bool verify(const struct RLN_Bn256 *ctx, struct Buffer *proof_buffer, uint32_t *result_ptr);
 
 bool hash(const struct RLN_Bn256 *ctx,
           const struct Buffer *inputs_buffer,
-          const uintptr_t *input_len,
+          uintptr_t input_len,
           struct Buffer *output_buffer);
 
 bool key_gen(const struct RLN_Bn256 *ctx, struct Buffer *keypair_buffer);

rln/rln.go

@@ -25,6 +25,8 @@ type KeyPair struct {
 	Commitment [32]byte
 }
 
+// @TODO THINK ABOUT AUTH OBJECT
+
 // New returns a new RLN generated from the passed depth and parameters.
 func New(depth int, parameters []byte) (*RLN, error) {
 	r := &RLN{}
@@ -69,21 +71,27 @@ func (r *RLN) Hash(input []byte) ([]byte, error) {
 	*in = toBuffer(input)
 
 	out := (*C.Buffer)(C.malloc(C.size_t(size)))
-	if !bool(C.hash(r.ptr, in, &in.len, out)) {
+	if !bool(C.hash(r.ptr, in, in.len, out)) {
 		return nil, errors.New("failed to hash")
 	}
 
 	return C.GoBytes(unsafe.Pointer(out.ptr), C.int(out.len)), nil
 }
 
-// GenerateProof generates a proof for the RLN.
-func (r *RLN) GenerateProof(input []byte) ([]byte, error) {
+// GenerateProof generates a proof for the RLN given a KeyPair and the index in a merkle tree.
+func (r *RLN) GenerateProof(input []byte, key *KeyPair, index uint) ([]byte, error) {
 	inputBuf := toBuffer(input)
 
 	var output []byte
 	out := toBuffer(output)
 
-	if !bool(C.generate_proof(r.ptr, &inputBuf, &out)) {
+	keybuf := toBuffer(key.Key[:])
+	auth := &C.Auth{
+		secret_buffer: &keybuf,
+		index:         C.ulong(index),
+	}
+
+	if !bool(C.generate_proof(r.ptr, &inputBuf, auth, &out)) {
 		return nil, errors.New("failed to generate proof")
 	}
 
@@ -91,13 +99,12 @@ func (r *RLN) GenerateProof(input []byte) ([]byte, error) {
 }
 
 // Verify verifies a proof generated for the RLN.
-func (r *RLN) Verify(proof []byte, publicInputs []byte) bool {
+func (r *RLN) Verify(proof []byte) bool {
 	proofBuf := toBuffer(proof)
-	inputs := toBuffer(publicInputs)
 
 	result := uint32(0)
 	res := C.uint(result)
-	if !bool(C.verify(r.ptr, &proofBuf, &inputs, &res)) {
+	if !bool(C.verify(r.ptr, &proofBuf, &res)) {
 		// @TODO THINK ABOUT ERROR?
 		return false
 	}
@@ -105,6 +112,34 @@ func (r *RLN) Verify(proof []byte, publicInputs []byte) bool {
 	return uint32(res) == 0
 }
 
+func (r *RLN) UpdateNextMember(input []byte) error {
+	buf := toBuffer(input)
+	if !bool(C.update_next_member(r.ptr, &buf)) {
+		return errors.New("failed to update next member")
+	}
+
+	return nil
+}
+
+func (r *RLN) DeleteMember(index int) error {
+	if !bool(C.delete_member(r.ptr, C.ulong(index))) {
+		return errors.New("failed to delete member")
+	}
+
+	return nil
+}
+
+func (r *RLN) GetRoot() ([]byte, error) {
+	var output []byte
+	out := toBuffer(output)
+
+	if !bool(C.get_root(r.ptr, &out)) {
+		return nil, errors.New("failed to get root")
+	}
+
+	return C.GoBytes(unsafe.Pointer(out.ptr), C.int(out.len)), nil
+}
+
 func toBuffer(data []byte) C.Buffer {
 	dataPtr, dataLen := sliceToPtr(data)
 	return C.Buffer{