diff --git a/.github/workflows/workspace.yml b/.github/workflows/workspace.yml
index 04be31b8..e14f8e2a 100644
--- a/.github/workflows/workspace.yml
+++ b/.github/workflows/workspace.yml
@@ -175,13 +175,17 @@ jobs:
         run: python examples/server_api_simple.py
         working-directory: ferveo-python
 
-      - name: Install pytest
-        run: pip install pytest
+      - name: Install pip dependencies
+        run: pip install pytest mypy
 
       - name: Run pytest
         run: pytest
         working-directory: ferveo-python
 
+      - name: Run mypy.stubtest
+        run: python -m mypy.stubtest ferveo
+        working-directory: ferveo-python
+
   codecov:
     runs-on: ubuntu-latest
     needs: [ test ]
diff --git a/Pipfile b/Pipfile
new file mode 100644
index 00000000..c398b0d5
--- /dev/null
+++ b/Pipfile
@@ -0,0 +1,11 @@
+[[source]]
+url = "https://pypi.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[packages]
+
+[dev-packages]
+
+[requires]
+python_version = "3.10"
diff --git a/ferveo-python/Cargo.toml b/ferveo-python/Cargo.toml
index 7fc78583..eafc050c 100644
--- a/ferveo-python/Cargo.toml
+++ b/ferveo-python/Cargo.toml
@@ -8,7 +8,6 @@ publish = false
 
 [lib]
 crate-type = ["cdylib"]
-name = "ferveo_py"
 
 [features]
 extension-module = ["pyo3/extension-module"]
diff --git a/ferveo-python/Pipfile b/ferveo-python/Pipfile
new file mode 100644
index 00000000..c398b0d5
--- /dev/null
+++ b/ferveo-python/Pipfile
@@ -0,0 +1,11 @@
+[[source]]
+url = "https://pypi.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[packages]
+
+[dev-packages]
+
+[requires]
+python_version = "3.10"
diff --git a/ferveo-python/examples/exception.py b/ferveo-python/examples/exception.py
index a653b43a..4e16aea9 100644
--- a/ferveo-python/examples/exception.py
+++ b/ferveo-python/examples/exception.py
@@ -1,4 +1,4 @@
-from ferveo_py import (
+from ferveo import (
     Keypair,
     Validator,
     Dkg,
diff --git a/ferveo-python/examples/server_api_precomputed.py b/ferveo-python/examples/server_api_precomputed.py
index c0973b66..0916738d 100644
--- a/ferveo-python/examples/server_api_precomputed.py
+++ b/ferveo-python/examples/server_api_precomputed.py
@@ -1,4 +1,4 @@
-from ferveo_py import (
+from ferveo import (
     encrypt,
     combine_decryption_shares_precomputed,
     decrypt_with_shared_secret,
diff --git a/ferveo-python/examples/server_api_simple.py b/ferveo-python/examples/server_api_simple.py
index de26ba38..e41c9f24 100644
--- a/ferveo-python/examples/server_api_simple.py
+++ b/ferveo-python/examples/server_api_simple.py
@@ -1,4 +1,4 @@
-from ferveo_py import (
+from ferveo import (
     encrypt,
     combine_decryption_shares_simple,
     decrypt_with_shared_secret,
diff --git a/ferveo-python/ferveo/__init__.py b/ferveo-python/ferveo/__init__.py
index 43b4bbd6..f89aa778 100644
--- a/ferveo-python/ferveo/__init__.py
+++ b/ferveo-python/ferveo/__init__.py
@@ -1,4 +1,4 @@
-from .ferveo_py import (
+from ._ferveo import (
     encrypt,
     combine_decryption_shares_simple,
     combine_decryption_shares_precomputed,
diff --git a/ferveo-python/ferveo/__init__.pyi b/ferveo-python/ferveo/__init__.pyi
index e16189d1..4d540655 100644
--- a/ferveo-python/ferveo/__init__.pyi
+++ b/ferveo-python/ferveo/__init__.pyi
@@ -1,21 +1,21 @@
-from typing import Sequence
-
+from typing import Sequence, final
 
+@final
 class Keypair:
     @staticmethod
     def random() -> Keypair:
         ...
 
     @staticmethod
-    def from_secure_randomness(data: bytes) -> Keypair:
+    def from_secure_randomness(bytes: bytes) -> Keypair:
         ...
 
     @staticmethod
-    def secure_randomness_size(data: bytes) -> int:
+    def secure_randomness_size() -> int:
         ...
 
     @staticmethod
-    def from_bytes(data: bytes) -> Keypair:
+    def from_bytes(bytes: bytes) -> Keypair:
         ...
 
     def __bytes__(self) -> bytes:
@@ -24,10 +24,10 @@ class Keypair:
     def public_key(self) -> FerveoPublicKey:
         ...
 
-
+@final
 class FerveoPublicKey:
     @staticmethod
-    def from_bytes(data: bytes) -> FerveoPublicKey:
+    def from_bytes(bytes: bytes) -> FerveoPublicKey:
         ...
 
     def __bytes__(self) -> bytes:
@@ -36,10 +36,11 @@ class FerveoPublicKey:
     def __hash__(self) -> int:
         ...
 
-    def __richcmp__(self, other: FerveoPublicKey, op: int) -> bool:
+    @staticmethod
+    def serialized_size() -> int:
         ...
 
-
+@final
 class Validator:
 
     def __init__(self, address: str, public_key: FerveoPublicKey):
@@ -49,25 +50,29 @@ class Validator:
 
     public_key: FerveoPublicKey
 
-
+@final
 class Transcript:
     @staticmethod
-    def from_bytes(data: bytes) -> Transcript:
+    def from_bytes(bytes: bytes) -> Transcript:
         ...
 
     def __bytes__(self) -> bytes:
         ...
 
-
+@final
 class DkgPublicKey:
     @staticmethod
-    def from_bytes(data: bytes) -> DkgPublicKey:
+    def from_bytes(bytes: bytes) -> DkgPublicKey:
         ...
 
     def __bytes__(self) -> bytes:
         ...
 
+    @staticmethod
+    def serialized_size() -> int:
+        ...
 
+@final
 class ValidatorMessage:
 
     def __init__(
@@ -80,7 +85,7 @@ class ValidatorMessage:
     validator: Validator
     transcript: Transcript
 
-
+@final
 class Dkg:
 
     def __init__(
@@ -101,34 +106,33 @@ class Dkg:
     def aggregate_transcripts(self, messages: Sequence[ValidatorMessage]) -> AggregatedTranscript:
         ...
 
-
+@final
 class Ciphertext:
     @staticmethod
-    def from_bytes(data: bytes) -> Ciphertext:
+    def from_bytes(bytes: bytes) -> Ciphertext:
         ...
 
     def __bytes__(self) -> bytes:
         ...
 
-
+@final
 class DecryptionShareSimple:
     @staticmethod
-    def from_bytes(data: bytes) -> DecryptionShareSimple:
+    def from_bytes(bytes: bytes) -> DecryptionShareSimple:
         ...
 
     def __bytes__(self) -> bytes:
         ...
-
-
+@final
 class DecryptionSharePrecomputed:
     @staticmethod
-    def from_bytes(data: bytes) -> DecryptionSharePrecomputed:
+    def from_bytes(bytes: bytes) -> DecryptionSharePrecomputed:
         ...
 
     def __bytes__(self) -> bytes:
         ...
 
-
+@final
 class AggregatedTranscript:
 
     def __init__(self, messages: Sequence[ValidatorMessage]):
@@ -156,23 +160,24 @@ class AggregatedTranscript:
         ...
 
     @staticmethod
-    def from_bytes(data: bytes) -> AggregatedTranscript:
+    def from_bytes(bytes: bytes) -> AggregatedTranscript:
         ...
 
     def __bytes__(self) -> bytes:
         ...
 
-
+@final
 class SharedSecret:
 
     @staticmethod
-    def from_bytes(data: bytes) -> SharedSecret:
+    def from_bytes(bytes: bytes) -> SharedSecret:
         ...
 
     def __bytes__(self) -> bytes:
         ...
 
 
+@final
 class FerveoVariant:
     @staticmethod
     def simple() -> str: ...
@@ -181,18 +186,18 @@ class FerveoVariant:
     def precomputed() -> str: ...
 
 
-def encrypt(message: bytes, add: bytes, dkg_public_key: DkgPublicKey) -> Ciphertext:
+def encrypt(message: bytes, aad: bytes, dkg_public_key: DkgPublicKey) -> Ciphertext:
     ...
 
 
 def combine_decryption_shares_simple(
-        decryption_shares: Sequence[DecryptionShareSimple],
+        shares: Sequence[DecryptionShareSimple],
 ) -> bytes:
     ...
 
 
 def combine_decryption_shares_precomputed(
-        decryption_shares: Sequence[DecryptionSharePrecomputed],
+        shares: Sequence[DecryptionSharePrecomputed],
 ) -> SharedSecret:
     ...
 
@@ -267,7 +272,3 @@ class ValidatorPublicKeyMismatch(Exception):
 
 class SerializationError(Exception):
     pass
-
-
-class InvalidVariant(Exception):
-    pass
diff --git a/ferveo-python/pyproject.toml b/ferveo-python/pyproject.toml
index a0010648..f90a4e13 100644
--- a/ferveo-python/pyproject.toml
+++ b/ferveo-python/pyproject.toml
@@ -1,14 +1,18 @@
-[build-system]
-requires = ["maturin>=0.14,<0.15"]
-build-backend = "maturin"
+#[build-system]
+#requires = ["maturin>=0.14,<0.15"]
+#build-backend = "maturin"
+#
+#[project]
+#name = "ferveo"
+#requires-python = ">=3.7"
+#classifiers = [
+#    "Programming Language :: Rust",
+#    "Programming Language :: Python :: Implementation :: CPython",
+#    "Programming Language :: Python :: Implementation :: PyPy",
+#]
+#
 
-[project]
-name = "ferveo"
-requires-python = ">=3.7"
-classifiers = [
-    "Programming Language :: Rust",
-    "Programming Language :: Python :: Implementation :: CPython",
-    "Programming Language :: Python :: Implementation :: PyPy",
-]
+[build-system]
+requires = ["setuptools", "wheel", "setuptools-rust"]
 
 
diff --git a/ferveo-python/src/lib.rs b/ferveo-python/src/lib.rs
index fff55e96..71e29c9f 100644
--- a/ferveo-python/src/lib.rs
+++ b/ferveo-python/src/lib.rs
@@ -2,6 +2,6 @@ use ferveo::bindings_python::*;
 use pyo3::prelude::*;
 
 #[pymodule]
-fn ferveo_py(py: Python, m: &PyModule) -> PyResult<()> {
+fn _ferveo(py: Python, m: &PyModule) -> PyResult<()> {
     make_ferveo_py_module(py, m)
 }
diff --git a/ferveo-python/test/test_ferveo.py b/ferveo-python/test/test_ferveo.py
index b92f1c01..b045fec3 100644
--- a/ferveo-python/test/test_ferveo.py
+++ b/ferveo-python/test/test_ferveo.py
@@ -1,6 +1,6 @@
 import pytest
 
-from ferveo_py import (
+from ferveo import (
     encrypt,
     combine_decryption_shares_simple,
     combine_decryption_shares_precomputed,
diff --git a/ferveo-python/test/test_serialization.py b/ferveo-python/test/test_serialization.py
index 6b564be2..ee48cd8a 100644
--- a/ferveo-python/test/test_serialization.py
+++ b/ferveo-python/test/test_serialization.py
@@ -1,4 +1,4 @@
-from ferveo_py import (
+from ferveo import (
     Keypair,
     Validator,
     Dkg,
diff --git a/ferveo/src/bindings_python.rs b/ferveo/src/bindings_python.rs
index cf19ebc9..99538e60 100644
--- a/ferveo/src/bindings_python.rs
+++ b/ferveo/src/bindings_python.rs
@@ -193,6 +193,7 @@ macro_rules! generate_boxed_bytes_serialization {
         #[pymethods]
         impl $struct_name {
             #[staticmethod]
+            #[pyo3(signature = (bytes))]
             pub fn from_bytes(bytes: &[u8]) -> PyResult<Self> {
                 Ok($struct_name(
                     $inner_struct_name::from_bytes(bytes).map_err(|err| {