Clean up for release.

.gitignore

@@ -3,9 +3,9 @@
 *.egg-info
 /dist
 /build
-/pyaegis/build
+/src/aeg/build
-/pyaegis/_aegis.*.so
+/src/aeg/_aegis*.so
-/pyaegis/_aegis.*.pyd
+/src/aeg/_aegis*.pyd
 __pycache__
 !.gitignore
 !.gitmodules

BUILD.md

@@ -1,6 +1,6 @@
-# Building pyaegis
+# Building aeg
 
-This document contains instructions for developers who want to build pyaegis from source.
+This document contains instructions for developers who want to build aeg from source.
 
 ## Prerequisites
 
@@ -11,7 +11,7 @@ This document contains instructions for developers who want to build pyaegis fro
 
 ### Installing Zig
 
-pyaegis uses Zig to build the underlying libaegis C library. Install Zig from [ziglang.org/download](https://ziglang.org/download/) or using your package manager:
+aeg uses Zig to build the underlying libaegis C library. Install Zig from [ziglang.org/download](https://ziglang.org/download/) or using your package manager:
 
 - **macOS**: `brew install zig`
 - **Linux**: See [Zig installation guide](https://github.com/ziglang/zig/wiki/Install-Zig-from-a-Package-Manager)
@@ -22,8 +22,8 @@ pyaegis uses Zig to build the underlying libaegis C library. Install Zig from [z
 Clone the repository with submodules:
 
 ```fish
-git clone --recursive https://github.com/LeoVasanko/pyaegis.git
+git clone --recursive https://github.com/LeoVasanko/aeg.git
-cd pyaegis
+cd aeg
 ```
 
 If you already cloned without `--recursive`, initialize submodules:
@@ -74,7 +74,7 @@ This creates files in the `dist/` directory.
 
 ## Code Generation
 
-The Python modules and CFFI definitions are generated from C sources and templates. If you modify the core implementation in `pyaegis/aegis256x4.py` or update libaegis headers, regenerate all files:
+The Python modules and CFFI definitions are generated from C sources and templates. If you modify the core implementation in `src/aeg/aegis256x4.py` or update libaegis headers, regenerate all files:
 
 ```fish
 python tools/generate.py
@@ -100,7 +100,7 @@ If you cannot install Zig, you may manually compile in the libaegis folder (Zig,
 
 ## Project Structure
 
-- `pyaegis/` - Python package source
+- `src/aeg/` - Python package source
 - `libaegis/` - C library source (submodule)
 - `tests/` - Test suite
 - `tools/` - Code generation scripts and `build_backend.py` used to build libaegis

MANIFEST.in

@@ -1,13 +1,11 @@
-include pyaegis/aegis_cdef.h
+include src/aeg/aegis_cdef.h
 include setup.py
 include tools/build_backend.py
 include BUILD.md
 include README.md
 recursive-include libaegis *.c *.h *.zig *.zon
-include libaegis/CMakeLists.txt
 include libaegis/LICENSE
 include libaegis/README.md
-recursive-include libaegis/cmake *.cmake *.cmake.in
 graft libaegis/src
 include libaegis/build.zig
 include libaegis/build.zig.zon

README.md

@@ -1,33 +1,41 @@
-# pyaegis
+# AEGIS Cipher Python Binding
 
-[![PyPI version](https://badge.fury.io/py/pyaegis.svg)](https://badge.fury.io/py/pyaegis)
+[![PyPI version](https://badge.fury.io/py/aeg.svg)](https://badge.fury.io/py/aeg)
 
-Safe Python bindings for the AEGIS family of very fast authenticated encryption algorithms (via libaegis).
+Safe Python bindings for the AEGIS family of very fast authenticated encryption algorithms via libaegis. The module runs without compilation required on Windows, Mac and Linux (has precompiled wheels). For other platforms compilation is performed at install time.
+
+AEGIS enables extremely fast Encryption, MAC and CSPRNG - many times faster than AES, ChaCha20 or traditional random number generators. Authenticated Encryption with Additional Data is supported with the MAC derived from the cipher state at the end, making it different from other AEADs like AES-GCM and ChaCha20-Poly1305. The whole internal state thus depends on the prior data, and it is neither Encrypt-Then-Mac nor Mac-The-Encrypt scheme when both features are used together.
 
 ## Install
 
-Using [uv](https://docs.astral.sh/uv/getting-started/installation/):
+```sh
-```fish
+pip install aeg
-uv pip install git+https://github.com/LeoVasanko/pyaegis.git
 ```
 
-For development builds, see BUILD.md.
+Or add to your project using [UV](https://docs.astral.sh/uv/getting-started/installation/):
+```sh
+uv add aeg
+```
 
 ## Variants
 
-All submodules expose the same API; pick one for your key/nonce size and platform:
+All submodules expose the same API; pick one for your needs. The 256 bit variants offer maximal security and use larger key and nonce, while the 128 bit variants run slightly faster and use smaller key and nonce while still providing strong security. The MAC length does not depend on the variant. Note that the x2 and x4 variants are typically the fastest (depending on CPU) by utilizing SIMD multi-lane processing for the highest throughput.
 
-- aegis128l (16-byte key, 16-byte nonce)
+| Variant        | Key/Nonce Bytes | Notes                   |
-- aegis256 (32-byte key, 32-byte nonce)
+|----------------|----------------:|-------------------------|
-- aegis128x2 / aegis128x4 (multi-lane 128-bit; best throughput on SIMD-capable CPUs)
+| **aegis128l**  | 16              |                         |
-- aegis256x2 / aegis256x4 (multi-lane 256-bit)
+| **aegis128x2** | 16              | Fastest on Intel Core   |
+| **aegis128x4** | 16              | Fastest on AMD and Xeon |
+| **aegis256**   | 32              |                         |
+| **aegis256x2** | 32              | Fast on Intel Core      |
+| **aegis256x4** | 32              | Fast on AMD and Xeon    |
 
 ## Quick start
 
 Normal authenticated encryption using the AEGIS-128X4 algorithm:
 
 ```python
-from pyaegis import aegis128x4 as ciph
+from aeg import aegis128x4 as ciph
 
 key = ciph.random_key()      # Secret key (stored securely)
 nonce = ciph.random_nonce()  # Public nonce (recreated for each message)
@@ -49,7 +57,7 @@ Common parameters and returns (applies to all items below):
 - into: optional output buffer (see below)
 - maclen: MAC tag length 16 or 32 bytes (default 16)
 
-Only the first few can be positional arguments that are always provided in this order. All arguments can be passed as kwargs. The inputs can be any Buffer supporting len() (e.g. `bytes`, `bytearray`, `memoryview`).
+Only the first few can be positional arguments that are always provided in this order. All arguments can be passed as kwargs. The inputs can be any Buffer (e.g. `bytes`, `bytearray`, `memoryview`).
 
 Most functions return a buffer of bytes. By default a `bytearray` of the correct size is returned. An existing buffer can be provided by `into` argument, in which case the bytes of it that were written to are returned as a memoryview.
 
@@ -83,13 +91,13 @@ The object releases its state and becomes unusable after final has been called.
 
 No encryption, but prevents changes to the data without the correct key.
 
-- mac(key, nonce, data, maclen=16, into=None) -> mac
+- mac(key, nonce, data, maclen=16, into=None) -> mac bytes
 - Mac(key, nonce, maclen=16)
     - update(data)
-    - final([into]) -> mac
+    - final([into]) -> mac bytes
     - verify(mac) -> raises ValueError on failure
-    - digest() -> bytes
+    - digest() -> mac bytes
-    - hexdigest() -> str
+    - hexdigest() -> mac str
     - reset()
     - clone() -> Mac
 
@@ -123,7 +131,7 @@ Constants (per module): NAME, KEYBYTES, NONCEBYTES, MACBYTES, MACBYTES_LONG, RAT
 
 A cryptographically secure keyed hash is produced. The example uses all zeroes for the nonce to always produce the same hash for the same key:
 ```python
-from pyaegis import aegis256x4 as ciph
+from aeg import aegis256x4 as ciph
 key, nonce = ciph.random_key(), bytes(ciph.NONCEBYTES)
 
 mac = ciph.mac(key, nonce, b"message", maclen=32)
@@ -146,7 +154,7 @@ b.verify(mac)  # Raises ValueError
 Keeping the ciphertext, mac and ad separate. The ad represents a file header that needs to be tamper proofed.
 
 ```python
-from pyaegis import aegis256x4 as ciph
+from aeg import aegis256x4 as ciph
 key, nonce = ciph.random_key(), ciph.random_nonce()
 
 ct, mac = ciph.encrypt_detached(key, nonce, b"secret", ad=b"header")
@@ -162,7 +170,7 @@ ciph.wipe(pt)
 Class-based interface for incremental updates is an alternative to the one-shot functions. Not to be confused with separately verified ciphertext frames (see the next example).
 
 ```python
-from pyaegis import aegis256x4 as ciph
+from aeg import aegis256x4 as ciph
 key, nonce = ciph.random_key(), ciph.random_nonce()
 
 enc = ciph.Encryptor(key, nonce, ad=b"header", maclen=16)
@@ -181,16 +189,17 @@ dec.final(mac)               # raises ValueError on failure
 It is often practical to split larger messages into frames that can be individually decrypted and verified. Because every frame needs a different key, we employ the `nonce_increment` utility function to produce sequential nonces for each frame. As for the AEGIS algorithm, each frame is a completely independent invocation. The program will each time produce a completely different random-looking encrypted.bin file.
 
 ```python
-from pyaegis import aegis128x4 as ciph
+# Encryption settings
-
+from aeg import aegis128x4 as ciph
-message = bytearray(30 * b"Attack at dawn! ")
 key = b"sixteenbyte key!"  # 16 bytes secret key for aegis128* algorithms
-nonce = ciph.random_nonce()
 framebytes = 80  # In real applications 1 MiB or more is practical
 maclen = ciph.MACBYTES  # 16
 
+message = bytearray(30 * b"Attack at dawn! ")
 with open("encrypted.bin", "wb") as f:
-    f.write(nonce)  # Public initial nonce sent with the ciphertext
+    # Public initial nonce sent with the ciphertext
+    nonce = ciph.random_nonce()
+    f.write(nonce)
     while message:
         chunk = message[:framebytes - maclen]
         del message[:len(chunk)]
@@ -200,9 +209,8 @@ with open("encrypted.bin", "wb") as f:
 ```
 
 ```python
-from pyaegis import aegis128x4 as ciph
-
 # Decryption needs same values as encryption
+from aeg import aegis128x4 as ciph
 key = b"sixteenbyte key!"
 framebytes = 80
 maclen = ciph.MACBYTES
@@ -223,7 +231,7 @@ with open("encrypted.bin", "rb") as f:
 The stream generator is much faster than any traditional random number generator, cryptographically secure and seekable. Use `random_key()` for unpredictable output.
 
 ```python
-from pyaegis import aegis128x4 as ciph
+from aeg import aegis128x4 as ciph
 
 key = b"SeedForReplay001"  # A non-random deterministic seed (16 bytes)
 nonce = bytearray(ciph.NONCEBYTES)  # All-zeroes nonce
@@ -239,7 +247,7 @@ Note: this is seekable by converting the block number to nonce with `idx.to_byte
 
 ### Preallocated output buffers (into=)
 
-For advanced use cases, the output buffer can be supplied with `into` kwarg. Any type of writable buffer with len() >= space required can be used. This includes bytearrays, memoryviews, mmap files, numpy.getbuffer etc.
+For advanced use cases, the output buffer can be supplied with `into` kwarg. Any type of writable buffer with a sufficient number of bytes can be used. This includes bytearrays, memoryviews, mmap files, numpy arrays etc.
 
 A `TypeError` is raised if the buffer is too small. For convenience, the functions return a memoryview showing only the bytes actually written.
 
@@ -247,18 +255,18 @@ Foreign arrays can be used. This example fills a Numpy array with random integer
 
 ```python
 import numpy as np
-from pyaegis import aegis128x4 as ciph
+from aeg import aegis128x4 as ciph
 key, nonce = ciph.random_key(), ciph.random_nonce()
+
 arr = np.empty(10, dtype=np.uint64)  # Uninitialised integer array
 ciph.stream(key, nonce, into=arr)    # Fill with random bytes
 print(arr)
 ```
 
-
 In-place operations are supported when the input and the output point to the same location in memory. When using attached MAC tag, the input buffer needs to be sliced to correct length:
 
 ```python
-from pyaegis import aegis256x4 as ciph
+from aeg import aegis256x4 as ciph
 key, nonce = ciph.random_key(), ciph.random_nonce()
 buf = memoryview(bytearray(1000))  # memoryview[:len] is still in the same buffer (no copy)
 buf[:7] = b"message"
@@ -276,33 +284,27 @@ Detached and unauthenticated modes can use same size input and output (no MAC ad
 
 Runtime CPU feature detection selects optimized code paths (AES-NI, ARM Crypto, AVX2/AVX-512). Multi-lane variants (x2/x4) offer higher throughput on suitable CPUs.
 
-Run the built-in benchmark to see which variant is fastest on your machine:
+Benchmarks using the included benchmark module, run on Intel i7-14700, linux, single core (the software is not multithreaded). Note that the results are in megabits per second, not bytes. The CPU lacks AVX-512 that makes the X4 variants faster on processors supporting it (most AMD, Xeon).
 
-```fish
+```sh
-uv run -m pyaegis.benchmark
+uv run -m aeg.benchmark
-```
+AEGIS-256        103166.24 Mb/s
-
+AEGIS-256X2      184225.50 Mb/s
-Benchmarks of the Python module and the C library run on Intel i7-14700, linux, single core (the software is not multithreaded). Note that the results are in megabits per second, not bytes. The CPU lacks AVX-512 that makes the X4 variants faster on AMD hardware.
+AEGIS-256X4      194018.26 Mb/s
-
+AEGIS-128L       161551.73 Mb/s
-```fish
+AEGIS-128X2      281987.80 Mb/s
-$ python -m pyaegis.benchmark
+AEGIS-128X4      217997.37 Mb/s
-AEGIS-256        107666.56 Mb/s
+AEGIS-128L MAC   188886.40 Mb/s
-AEGIS-256X2      191314.53 Mb/s
+AEGIS-128X2 MAC  306457.97 Mb/s
-AEGIS-256X4      211537.44 Mb/s
+AEGIS-128X4 MAC  299576.59 Mb/s
-AEGIS-128L       159074.08 Mb/s
+AEGIS-256 MAC    100914.04 Mb/s
-AEGIS-128X2      307332.53 Mb/s
+AEGIS-256X2 MAC  190208.20 Mb/s
-AEGIS-128X4      230106.70 Mb/s
+AEGIS-256X4 MAC  315919.87 Mb/s
-AEGIS-128L MAC   206082.24 Mb/s
-AEGIS-128X2 MAC  366401.20 Mb/s
-AEGIS-128X4 MAC  375011.51 Mb/s
-AEGIS-256 MAC    110187.03 Mb/s
-AEGIS-256X2 MAC  210063.51 Mb/s
-AEGIS-256X4 MAC  347406.96 Mb/s
 ```
 
 The Python library performance is similar to that of the C library:
-```fish
+```sh
-$ ./libaegis/zig-out/bin/benchmark
+./libaegis/zig-out/bin/benchmark
 AEGIS-256        107820.86 Mb/s
 AEGIS-256X2      205025.57 Mb/s
 AEGIS-256X4      223361.81 Mb/s
@@ -316,3 +318,7 @@ AEGIS-256 MAC    116776.62 Mb/s
 AEGIS-256X2 MAC  224150.04 Mb/s
 AEGIS-256X4 MAC  392088.05 Mb/s
 ```
+
+## Alternatives
+
+There is also a package named [pyaegis](https://github.com/jedisct1/pyaegis) on PyPI that is unrelated to this module, but that also binds to the libaegis C library. There are also a number of modules named aegis from different packages not at all related to the encryption algorithm.

pyproject.toml

@@ -1,16 +1,14 @@
 [build-system]
-requires = ["setuptools>=61.0", "cffi>=2.0.0"]
+requires = ["setuptools>=61.0", "cffi>=2.0.0", "setuptools-scm>=8.0"]
 build-backend = "build_backend"
 backend-path = ["tools"]
 
 [project]
-name = "pyaegis"
+name = "aeg"
-version = "0.3.0"
+dynamic = ["version"]
-description = "Python bindings for libaegis"
+description = "AEGIS encryption easy to use Python binding. Wheels for major platforms."
 requires-python = ">=3.10"
 classifiers = [
-  "Programming Language :: Python :: 3",
-  "Programming Language :: Python :: 3 :: Only",
   "Programming Language :: Python :: Implementation :: CPython",
   "Operating System :: OS Independent",
   "Topic :: Security :: Cryptography",
@@ -20,16 +18,22 @@ dependencies = [
 ]
 
 [project.urls]
-Homepage = "https://github.com/aegis-aead/libaegis"
+Homepage = "https://git.zi.fi/LeoVasanko/aegis-python"
+Repository = "https://github.com/LeoVasanko/aegis-python"
 
 [dependency-groups]
 dev = [
     "pytest>=8.4.2",
+    "ruff>=0.14.4",
     "setuptools>=80.9.0",
+    "setuptools-scm>=9.2.2",
 ]
 
 [tool.setuptools]
-packages = ["pyaegis"]
+package-dir = {"" = "src"}
+packages = ["aeg"]
 
 [tool.setuptools.package-data]
-pyaegis = ["*.h", "*.so", "*.pyd"]
+aeg = ["*.h", "*.so", "*.pyd"]
+
+[tool.setuptools_scm]

setup.py

@@ -1,49 +1,35 @@
-"""Setup script for pyaegis - builds CFFI extension linking to libaegis.a"""
+"""Setup script for aeg - builds CFFI extension with libaegis C library."""
 
+import sys
 from pathlib import Path
 
 from cffi import FFI
 from setuptools import setup
 
+# Locate the static library (built by build_backend.py before this runs)
+lib_name = "aegis.lib" if sys.platform == "win32" else "libaegis.a"
+libaegis_static = Path("libaegis/zig-out/lib") / lib_name
+if not libaegis_static.exists():
+    raise RuntimeError(f"libaegis static library not found at {libaegis_static}")
+libaegis_static = str(libaegis_static.resolve())
 
-def find_libaegis():
+# Include directory for headers
-    """Locate libaegis.a - check common locations."""
+libaegis_include = Path("libaegis/src/include")
-    libaegis_paths = [
+if not libaegis_include.exists():
-        Path("libaegis/zig-out/lib/libaegis.a"),  # Zig build output (repo build)
+    raise RuntimeError(f"libaegis include directory not found at {libaegis_include}")
-        Path("libaegis/build/libaegis.a"),  # CMake build output (repo build)
+include_dirs = [str(libaegis_include)]
-        Path("/usr/local/lib/libaegis.a"),  # System install
-        Path("/usr/lib/libaegis.a"),  # System install
-    ]
-
-    for path in libaegis_paths:
-        if path.exists():
-            print(f"Found libaegis.a at: {path.resolve()}")
-            return str(path.resolve())
-
-    # Return None instead of raising - will be caught during build
-    return None
-
 
 # Read the CDEF header
-cdef_path = Path(__file__).parent / "pyaegis" / "aegis_cdef.h"
+cdef_path = Path(__file__).parent / "src" / "aeg" / "aegis_cdef.h"
 cdef_content = cdef_path.read_text(encoding="utf-8")
 
 # Create CFFI builder
 ffibuilder = FFI()
 ffibuilder.cdef(cdef_content)
 
-# Include directory for headers
-include_dirs = []
-libaegis_include = Path("libaegis/src/include")
-if libaegis_include.exists():
-    include_dirs.append(str(libaegis_include.resolve()))
-
-# Try to find libaegis.a, but don't fail if not found (build backend will build it)
-libaegis_static = find_libaegis()
-
 # Set the source
 ffibuilder.set_source(
-    "pyaegis._aegis",  # module name
+    "aeg._aegis",  # module name
     """
     #include "aegis.h"
     #include "aegis128l.h"
@@ -54,7 +40,7 @@ ffibuilder.set_source(
     #include "aegis256x4.h"
     """,
     include_dirs=include_dirs,
-    extra_objects=[libaegis_static] if libaegis_static else [],
+    extra_objects=[libaegis_static],
 )
 
 if __name__ == "__main__":

src/aeg/_loader.py

@@ -1,6 +1,6 @@
 """Loader for libaegis CFFI extension module."""
 
-from pyaegis._aegis import ffi, lib
+from aeg._aegis import ffi, lib
 
 __all__ = ["ffi", "lib"]
 

src/aeg/aegis128l.py

@@ -295,9 +295,7 @@ def decrypt(
         out = bytearray(expected_out)
     else:
         if into.nbytes < expected_out:
-            raise TypeError(
+            raise TypeError("into length must be at least ct.nbytes - maclen")
-                "into length must be at least ct.nbytes - maclen"
-            )
         out = into
 
     rc = _lib.aegis128l_decrypt(
@@ -582,7 +580,9 @@ class Mac:
             out = into
 
         clone = self.clone()
-        rc = _lib.aegis128l_mac_final(clone._proxy.ptr, ffi.from_buffer(out), memoryview(out).nbytes)
+        rc = _lib.aegis128l_mac_final(
+            clone._proxy.ptr, ffi.from_buffer(out), memoryview(out).nbytes
+        )
         if rc != 0:
             err_num = ffi.errno
             err_name = errno.errorcode.get(err_num, f"errno_{err_num}")
@@ -851,7 +851,9 @@ class Decryptor:
             err_name = errno.errorcode.get(err_num, f"errno_{err_num}")
             raise RuntimeError(f"state decrypt update failed: {err_name}")
         w = int(written[0])
-        assert w == expected_out, f"got {w}, expected {expected_out}, ct.nbytes={ct.nbytes}"
+        assert w == expected_out, (
+            f"got {w}, expected {expected_out}, ct.nbytes={ct.nbytes}"
+        )
         return out if into is None else memoryview(out)[:w]  # type: ignore
 
     def final(self, mac: Buffer) -> None:

src/aeg/aegis128x2.py

@@ -295,9 +295,7 @@ def decrypt(
         out = bytearray(expected_out)
     else:
         if into.nbytes < expected_out:
-            raise TypeError(
+            raise TypeError("into length must be at least ct.nbytes - maclen")
-                "into length must be at least ct.nbytes - maclen"
-            )
         out = into
 
     rc = _lib.aegis128x2_decrypt(
@@ -582,7 +580,9 @@ class Mac:
             out = into
 
         clone = self.clone()
-        rc = _lib.aegis128x2_mac_final(clone._proxy.ptr, ffi.from_buffer(out), memoryview(out).nbytes)
+        rc = _lib.aegis128x2_mac_final(
+            clone._proxy.ptr, ffi.from_buffer(out), memoryview(out).nbytes
+        )
         if rc != 0:
             err_num = ffi.errno
             err_name = errno.errorcode.get(err_num, f"errno_{err_num}")
@@ -851,7 +851,9 @@ class Decryptor:
             err_name = errno.errorcode.get(err_num, f"errno_{err_num}")
             raise RuntimeError(f"state decrypt update failed: {err_name}")
         w = int(written[0])
-        assert w == expected_out, f"got {w}, expected {expected_out}, ct.nbytes={ct.nbytes}"
+        assert w == expected_out, (
+            f"got {w}, expected {expected_out}, ct.nbytes={ct.nbytes}"
+        )
         return out if into is None else memoryview(out)[:w]  # type: ignore
 
     def final(self, mac: Buffer) -> None:

src/aeg/aegis128x4.py

@@ -295,9 +295,7 @@ def decrypt(
         out = bytearray(expected_out)
     else:
         if into.nbytes < expected_out:
-            raise TypeError(
+            raise TypeError("into length must be at least ct.nbytes - maclen")
-                "into length must be at least ct.nbytes - maclen"
-            )
         out = into
 
     rc = _lib.aegis128x4_decrypt(
@@ -582,7 +580,9 @@ class Mac:
             out = into
 
         clone = self.clone()
-        rc = _lib.aegis128x4_mac_final(clone._proxy.ptr, ffi.from_buffer(out), memoryview(out).nbytes)
+        rc = _lib.aegis128x4_mac_final(
+            clone._proxy.ptr, ffi.from_buffer(out), memoryview(out).nbytes
+        )
         if rc != 0:
             err_num = ffi.errno
             err_name = errno.errorcode.get(err_num, f"errno_{err_num}")
@@ -851,7 +851,9 @@ class Decryptor:
             err_name = errno.errorcode.get(err_num, f"errno_{err_num}")
             raise RuntimeError(f"state decrypt update failed: {err_name}")
         w = int(written[0])
-        assert w == expected_out, f"got {w}, expected {expected_out}, ct.nbytes={ct.nbytes}"
+        assert w == expected_out, (
+            f"got {w}, expected {expected_out}, ct.nbytes={ct.nbytes}"
+        )
         return out if into is None else memoryview(out)[:w]  # type: ignore
 
     def final(self, mac: Buffer) -> None:

src/aeg/aegis256.py

@@ -295,9 +295,7 @@ def decrypt(
         out = bytearray(expected_out)
     else:
         if into.nbytes < expected_out:
-            raise TypeError(
+            raise TypeError("into length must be at least ct.nbytes - maclen")
-                "into length must be at least ct.nbytes - maclen"
-            )
         out = into
 
     rc = _lib.aegis256_decrypt(
@@ -582,7 +580,9 @@ class Mac:
             out = into
 
         clone = self.clone()
-        rc = _lib.aegis256_mac_final(clone._proxy.ptr, ffi.from_buffer(out), memoryview(out).nbytes)
+        rc = _lib.aegis256_mac_final(
+            clone._proxy.ptr, ffi.from_buffer(out), memoryview(out).nbytes
+        )
         if rc != 0:
             err_num = ffi.errno
             err_name = errno.errorcode.get(err_num, f"errno_{err_num}")
@@ -851,7 +851,9 @@ class Decryptor:
             err_name = errno.errorcode.get(err_num, f"errno_{err_num}")
             raise RuntimeError(f"state decrypt update failed: {err_name}")
         w = int(written[0])
-        assert w == expected_out, f"got {w}, expected {expected_out}, ct.nbytes={ct.nbytes}"
+        assert w == expected_out, (
+            f"got {w}, expected {expected_out}, ct.nbytes={ct.nbytes}"
+        )
         return out if into is None else memoryview(out)[:w]  # type: ignore
 
     def final(self, mac: Buffer) -> None:

src/aeg/aegis256x2.py

@@ -295,9 +295,7 @@ def decrypt(
         out = bytearray(expected_out)
     else:
         if into.nbytes < expected_out:
-            raise TypeError(
+            raise TypeError("into length must be at least ct.nbytes - maclen")
-                "into length must be at least ct.nbytes - maclen"
-            )
         out = into
 
     rc = _lib.aegis256x2_decrypt(
@@ -582,7 +580,9 @@ class Mac:
             out = into
 
         clone = self.clone()
-        rc = _lib.aegis256x2_mac_final(clone._proxy.ptr, ffi.from_buffer(out), memoryview(out).nbytes)
+        rc = _lib.aegis256x2_mac_final(
+            clone._proxy.ptr, ffi.from_buffer(out), memoryview(out).nbytes
+        )
         if rc != 0:
             err_num = ffi.errno
             err_name = errno.errorcode.get(err_num, f"errno_{err_num}")
@@ -851,7 +851,9 @@ class Decryptor:
             err_name = errno.errorcode.get(err_num, f"errno_{err_num}")
             raise RuntimeError(f"state decrypt update failed: {err_name}")
         w = int(written[0])
-        assert w == expected_out, f"got {w}, expected {expected_out}, ct.nbytes={ct.nbytes}"
+        assert w == expected_out, (
+            f"got {w}, expected {expected_out}, ct.nbytes={ct.nbytes}"
+        )
         return out if into is None else memoryview(out)[:w]  # type: ignore
 
     def final(self, mac: Buffer) -> None:

src/aeg/aegis256x4.py

@@ -295,9 +295,7 @@ def decrypt(
         out = bytearray(expected_out)
     else:
         if into.nbytes < expected_out:
-            raise TypeError(
+            raise TypeError("into length must be at least ct.nbytes - maclen")
-                "into length must be at least ct.nbytes - maclen"
-            )
         out = into
 
     rc = _lib.aegis256x4_decrypt(
@@ -582,7 +580,9 @@ class Mac:
             out = into
 
         clone = self.clone()
-        rc = _lib.aegis256x4_mac_final(clone._proxy.ptr, ffi.from_buffer(out), memoryview(out).nbytes)
+        rc = _lib.aegis256x4_mac_final(
+            clone._proxy.ptr, ffi.from_buffer(out), memoryview(out).nbytes
+        )
         if rc != 0:
             err_num = ffi.errno
             err_name = errno.errorcode.get(err_num, f"errno_{err_num}")
@@ -851,7 +851,9 @@ class Decryptor:
             err_name = errno.errorcode.get(err_num, f"errno_{err_num}")
             raise RuntimeError(f"state decrypt update failed: {err_name}")
         w = int(written[0])
-        assert w == expected_out, f"got {w}, expected {expected_out}, ct.nbytes={ct.nbytes}"
+        assert w == expected_out, (
+            f"got {w}, expected {expected_out}, ct.nbytes={ct.nbytes}"
+        )
         return out if into is None else memoryview(out)[:w]  # type: ignore
 
     def final(self, mac: Buffer) -> None:

src/aeg/benchmark.py

@@ -12,7 +12,7 @@ Output format and throughput units mirror the Zig benchmark (Mb/s).
 import secrets
 import time
 
-from pyaegis import aegis128l, aegis128x2, aegis128x4, aegis256, aegis256x2, aegis256x4
+from aeg import aegis128l, aegis128x2, aegis128x4, aegis256, aegis256x2, aegis256x4
 
 MSG_LEN = 16384000  # 16 000 KiB
 ITERATIONS = 100

src/aeg/util.py

@@ -1,4 +1,4 @@
-"""Utility helpers for pyaegis.
+"""Utility helpers for aeg.
 
 Currently provides Python-side aligned allocation helpers that avoid relying
 on libc/posix_memalign. Memory is owned by Python; C code only borrows it.
@@ -11,12 +11,9 @@ from ._loader import ffi
 __all__ = ["new_aligned_struct", "aligned_address", "Buffer", "nonce_increment", "wipe"]
 
 try:
-    from collections.abc import Buffer as _Buffer  # type: ignore[misc]
+    from collections.abc import Buffer  # type: ignore
-
-    class Buffer(_Buffer, Protocol):  # type: ignore[misc]
-        pass
 except ImportError:
-
+    # Fallback for Python < 3.12
     class Buffer(Protocol):
         def __buffer__(self, flags: int) -> memoryview: ...
 
@@ -75,13 +72,11 @@ def nonce_increment(nonce: Buffer) -> None:
 
 
 def wipe(buffer: Buffer) -> None:
-    """Set all bytes of the input buffer to zero.
+    """Securely clearing sensitive data from memory. Sets all bytes of the buffer to 0xFF.
-
-    Useful for securely clearing sensitive data from memory.
 
     Args:
         buffer: The buffer to wipe (modified in place).
     """
-    n = memoryview(buffer)
+    # This is the fastest method I have found in Python
-    for i in range(len(n)):
+    n = memoryview(buffer).cast("B")
-        n[i] = 0
+    n[:] = b"\xff" * len(n)

tests/test-vectors/gen.py

@@ -1,89 +0,0 @@
-#! /usr/bin/env python3
-
-import json
-import re
-
-
-def tvdump(topic, tvs):
-    with open(filename(topic), "w") as f:
-        f.write(json.dumps(tvs, indent=2))
-
-    print(json.dumps(tvs, indent=2))
-
-
-def filename(topic):
-    return re.sub(r"[^a-z0-9]+", "-", topic.lower()) + ".json"
-
-
-header = True
-in_tv = False
-tv = {}
-tvs = []
-must_fail = False
-with open("../draft-irtf-cfrg-aegis-aead.md") as f:
-    for line in f:
-        line = line.strip()
-        if line == "":
-            continue
-        if line.startswith("# Test Vectors"):
-            header = False
-            continue
-        if header:
-            continue
-
-        if line.startswith("## "):
-            if len(tvs) > 0:
-                tvdump(topic, tvs)
-            topic = line[3:]
-            tv_name = topic
-            tvs = []
-            continue
-
-        if line.startswith("### "):
-            tv_name = line[4:]
-            tv = {"test": tv_name}
-            in_tv = False
-            continue
-
-        if line == "~~~ test-vectors":
-            in_tv = True
-            tv = {"name": tv_name}
-            if must_fail:
-                tv["error"] = "verification failed"
-                must_fail = False
-            continue
-
-        if line == "~~~":
-            tvs.append(tv)
-            in_tv = False
-            current_key = None
-            continue
-
-        if line.find("verification failed") != -1:
-            must_fail = True
-            continue
-
-        if line == "After initialization:":
-            tv_name = tv_name + " (after initialization)"
-
-        if not in_tv:
-            continue
-
-        parts = line.split(":")
-        if len(parts) == 2:
-            key = parts[0].strip()
-            value = parts[1].strip()
-            if key == "After Update":
-                continue
-            if key in tv:
-                key = key + "_2"
-            tv[key] = value
-            current_key = key
-            continue
-
-        if not current_key:
-            continue
-
-        tv[key] += line.strip()
-
-tvdump(topic, tvs)

tests/test_encrypt.py

@@ -3,7 +3,7 @@ from pathlib import Path
 
 import pytest
 
-from pyaegis import aegis128l, aegis128x2, aegis128x4, aegis256, aegis256x2, aegis256x4
+from aeg import aegis128l, aegis128x2, aegis128x4, aegis256, aegis256x2, aegis256x4
 
 from .util import random_split_bytes
 

tests/test_mac.py

@@ -3,7 +3,7 @@ from pathlib import Path
 
 import pytest
 
-from pyaegis import aegis128l, aegis128x2, aegis128x4, aegis256, aegis256x2, aegis256x4
+from aeg import aegis128l, aegis128x2, aegis128x4, aegis256, aegis256x2, aegis256x4
 
 from .util import random_split_bytes
 

tests/test_raises.py

@@ -6,7 +6,7 @@ after calling final(), preventing accidental misuse.
 
 import pytest
 
-from pyaegis import aegis128l, aegis128x2, aegis128x4, aegis256, aegis256x2, aegis256x4
+from aeg import aegis128l, aegis128x2, aegis128x4, aegis256, aegis256x2, aegis256x4
 
 # All AEGIS algorithm modules
 ALL_ALGORITHMS = [aegis128l, aegis128x2, aegis128x4, aegis256, aegis256x2, aegis256x4]

tools/build_backend.py

@@ -15,7 +15,7 @@ def _check_zig_available():
             "\n" + "=" * 70 + "\n"
             "ERROR: Zig compiler not found!\n"
             "\n"
-            "Building pyaegis requires the Zig compiler to build the libaegis\n"
+            "Building aeg requires the Zig compiler to build the libaegis\n"
             "static library. Please install Zig before building this package.\n"
             "\n"
             "Installation instructions:\n"

tools/generate.py

@@ -267,7 +267,7 @@ def generate_python_modules(
         if dst.exists() and dst.read_text(encoding="utf-8") == new_content:
             unchanged.append(dst)
         else:
-            dst.write_text(new_content, encoding="utf-8")
+            dst.write_bytes(new_content.encode())
             updated.append(dst)
 
     return updated, unchanged
@@ -277,7 +277,7 @@ def main() -> int:
     root = pathlib.Path(__file__).parent.parent
     libaegis_src_dir = root / "libaegis" / "src"
     include_dir = libaegis_src_dir / "include"
-    pyaegis_dir = root / "pyaegis"
+    pyaegis_dir = root / "src" / "aeg"
 
     if not include_dir.exists():
         print(f"Include directory not found: {include_dir}", file=sys.stderr)
@@ -301,7 +301,7 @@ def main() -> int:
     if cdef_path.exists() and cdef_path.read_text(encoding="utf-8") == cdef_content:
         print(f"  - No changes to {cdef_path}", file=sys.stderr)
     else:
-        cdef_path.write_text(cdef_content, encoding="utf-8")
+        cdef_path.write_bytes(cdef_content.encode())
         print(f"  - Updated {cdef_path}", file=sys.stderr)
 
     print("Step 3: Generating Python modules...", file=sys.stderr)

tools/release.py

@@ -0,0 +1,296 @@
+#!/usr/bin/env python3
+"""Build wheels for all supported Python versions using uv."""
+
+import subprocess
+import sys
+import tomllib
+from pathlib import Path
+import shutil
+from packaging.specifiers import SpecifierSet
+from packaging.version import Version
+
+# Import generate module from same directory
+sys.path.insert(0, str(Path(__file__).parent))
+import generate
+
+
+def get_python_versions():
+    """Get supported Python versions."""
+    pyproject_toml = Path(__file__).parent.parent / "pyproject.toml"
+    data = tomllib.loads(pyproject_toml.read_text(encoding="utf-8"))
+    spec = SpecifierSet(data["project"]["requires-python"])
+    # Generate versions that match the specifier (up to Python 3.14)
+    return [f"3.{minor}" for minor in range(10, 15) if f"3.{minor}" in spec]
+
+
+def get_version_from_scm():
+    """Get version from setuptools-scm (git tags)."""
+    try:
+        result = subprocess.run(
+            ["uv", "run", "-m", "setuptools_scm"],
+            capture_output=True,
+            text=True,
+            check=True,
+            cwd=Path(__file__).parent.parent,
+        )
+        return result.stdout.strip()
+    except subprocess.CalledProcessError as e:
+        print(f"✗ Error getting version from setuptools-scm: {e}", file=sys.stderr)
+        return None
+
+
+def is_release_version(version):
+    """Check if version is a clean release (no dev/post/local identifiers)."""
+    # A release version is just x.y.z with optional alpha/beta/rc suffixes
+    # No +local or .devN or .postN
+    if not version:
+        return False
+    return not any(marker in version for marker in ["+", ".dev", ".post"])
+
+
+def get_next_version(current_version):
+    """Get the next release version from a dev version."""
+    # Parse base version (strips dev/local parts)
+    try:
+        v = Version(current_version)
+        return f"{v.major}.{v.minor}.{v.micro}"
+    except Exception:
+        return current_version
+
+
+def is_working_copy_clean():
+    """Check if git working copy is clean."""
+    result = subprocess.run(
+        ["git", "status", "--porcelain"], capture_output=True, text=True
+    )
+    return result.returncode == 0 and not result.stdout.strip()
+
+
+def make_release_message(version):
+    """Generate message for making a release."""
+    next_version = get_next_version(version)
+    is_clean = is_working_copy_clean()
+
+    msg = "\n⚠️  This is not a clean release version; upload to PyPI skipped.\n\n"
+    msg += f"To create a release (e.g. {next_version}) and upload to PyPI:\n"
+
+    if not is_clean:
+        msg += "  1. Add and commit changes on the working copy\n"
+        msg += f"  2. Tag the commit: git tag v{next_version}\n"
+        msg += "  3. Run this script again\n"
+        msg += f"  4. Push the tag: git push origin v{next_version}\n"
+    else:
+        msg += f"  1. Tag the current commit: git tag v{next_version}\n"
+        msg += "  2. Run this script again\n"
+        msg += f"  3. Push the tag: git push origin v{next_version}\n"
+
+    msg += (
+        f"\nIf the build didn't work, delete the tag with git tag -d v{next_version}\n"
+    )
+    return msg
+
+
+PYTHON_VERSIONS = get_python_versions()
+
+
+def run_command(cmd, description):
+    """Run a command and handle errors."""
+    print(f"\n{'=' * 70}")
+    print(f"{description}")
+    print(f"{'=' * 70}")
+    print(f">>> {' '.join(cmd)}")
+    try:
+        subprocess.run(cmd, check=True)
+        print(f"✓ {description} completed successfully")
+        return True
+    except subprocess.CalledProcessError as e:
+        print(f"✗ {description} failed with exit code {e.returncode}", file=sys.stderr)
+        return False
+
+
+def normalize_line_endings(repo_root: Path):
+    """Normalize all text files to LF line endings."""
+    # Patterns for files to normalize
+    patterns = [
+        "src/aeg/**/*.py",
+        "src/aeg/**/*.h",
+        "tests/**/*.py",
+        "tools/**/*.py",
+        "*.py",
+        "*.md",
+        "*.txt",
+        "*.toml",
+        "*.in",
+    ]
+    for pattern in patterns:
+        for file_path in repo_root.glob(pattern):
+            if file_path.is_file():
+                content = file_path.read_bytes()
+                if b"\r\n" in content:
+                    content = content.replace(b"\r\n", b"\n")
+                    file_path.write_bytes(content)
+
+
+def main():
+    """Build wheels for all supported Python versions."""
+    repo_root = Path(__file__).parent.parent
+    dist_dir = repo_root / "dist"
+
+    # Generate CFFI definitions and Python modules
+    print(f"\n{'=' * 70}")
+    print("Code generation from C headers (tools/generate.py)")
+    print(f"{'=' * 70}")
+    if generate.main() != 0:
+        print("✗ Code generation failed", file=sys.stderr)
+        return 1
+
+    # Run ruff to check and fix any issues
+    if not run_command(
+        ["uv", "run", "ruff", "check", "--fix", "."], "Running ruff check --fix"
+    ):
+        print("✗ Ruff check failed", file=sys.stderr)
+        return 1
+
+    # Run ruff format
+    if not run_command(["uv", "run", "ruff", "format", "."], "Running ruff format"):
+        print("✗ Ruff format failed", file=sys.stderr)
+        return 1
+
+    # Normalize all line endings to LF (important for consistent builds)
+    normalize_line_endings(repo_root)
+
+    # Get version from git repo
+    version = get_version_from_scm()
+    if not version:
+        return 1
+    is_release = is_release_version(version)
+
+    # Main header for the packaging process
+    print(f"\n{'=' * 70}")
+    print(
+        f"Packaging aeg-{version}"
+        + (" for release" if is_release else " (not release)")
+    )
+    print(f"Building wheels for Python versions: {', '.join(PYTHON_VERSIONS)}")
+    print(f"Output directory: {dist_dir}", end=" ")
+
+    # Clean dist directory
+    if dist_dir.exists():
+        print("(wiped)")
+        shutil.rmtree(dist_dir)
+    else:
+        print("(created)")
+    print(f"{'=' * 70}")
+
+    # Build source distribution first
+    if not run_command(
+        ["uv", "build", "--sdist", "--quiet"], "Building source distribution"
+    ):
+        print("✗ Source distribution build failed", file=sys.stderr)
+        return 1
+
+    failed_builds = []
+    successful_wheels = []
+
+    for py_version in PYTHON_VERSIONS:
+        # Build wheel
+        description = f"Building wheel for Python {py_version}"
+        cmd = ["uv", "build", "--python", py_version, "--wheel", "--quiet"]
+
+        if not run_command(cmd, description):
+            failed_builds.append(py_version)
+            continue
+
+        # Find the wheel for this version
+        wheel_pattern = f"aeg-*-cp{py_version.replace('.', '')}-*.whl"
+        wheels = list(dist_dir.glob(wheel_pattern))
+        if not wheels:
+            print(f"✗ Could not find wheel for Python {py_version}", file=sys.stderr)
+            failed_builds.append(py_version)
+            continue
+
+        wheel = wheels[0]
+
+        # Test the wheel with pytest (use --isolated to avoid .venv conflicts)
+        test_cmd = [
+            "uv",
+            "run",
+            "--isolated",
+            "--python",
+            py_version,
+            "--with",
+            str(wheel),
+            "--with",
+            "pytest",
+            "pytest",
+        ]
+        if not run_command(
+            test_cmd, f"Testing wheel for Python {py_version} with pytest"
+        ):
+            print(f"✗ Tests failed for Python {py_version}", file=sys.stderr)
+            failed_builds.append(py_version)
+            continue
+
+        # Run benchmark (use --isolated to avoid .venv conflicts)
+        bench_cmd = [
+            "uv",
+            "run",
+            "--isolated",
+            "--python",
+            py_version,
+            "--with",
+            str(wheel),
+            "-m",
+            "aeg.benchmark",
+        ]
+        if not run_command(bench_cmd, f"Running benchmark for Python {py_version}"):
+            print(f"✗ Benchmark failed for Python {py_version}", file=sys.stderr)
+            failed_builds.append(py_version)
+            continue
+
+        successful_wheels.append(wheel)
+
+    # Summary
+    print(f"\n{'=' * 70}")
+    print("BUILD SUMMARY")
+    print(f"{'=' * 70}")
+    print(
+        f"Successful builds: sdist and {len(successful_wheels)}/{len(PYTHON_VERSIONS)} wheels"
+    )
+
+    if failed_builds:
+        print(f"\nFailed builds: {len(failed_builds)}")
+        for version in failed_builds:
+            print(f"  ✗ Python {version}")
+
+    if not successful_wheels:
+        print("\n✗ No successful wheels to upload")
+        return 1
+
+    # List files to upload
+    sdist = list(dist_dir.glob("*.tar.gz"))
+    upload_files = sdist + successful_wheels
+
+    for file in upload_files:
+        print(f"  - {file.name}")
+
+    # Only upload if this is a clean release version
+    if not is_release:
+        print(make_release_message(version))
+        return 0
+
+    # Upload with twine
+    upload_cmd = ["uvx", "twine", "upload"] + [str(f) for f in upload_files]
+    if not run_command(upload_cmd, "Uploading to PyPI with twine"):
+        print("\n✗ Upload failed")
+        return 1
+
+    print(f"\n{'=' * 70}")
+    print("All builds and upload completed successfully!")
+    print(f"{'=' * 70}")
+    print()
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())