Delete dist directory

dist/ba_data/python-site-packages/cryptography/hazmat/backends/openssl/cmac.py

@@ -1,89 +0,0 @@
-# This file is dual licensed under the terms of the Apache License, Version
-# 2.0, and the BSD License. See the LICENSE file in the root of this repository
-# for complete details.
-
-from __future__ import annotations
-
-import typing
-
-from cryptography.exceptions import (
-    InvalidSignature,
-    UnsupportedAlgorithm,
-    _Reasons,
-)
-from cryptography.hazmat.primitives import constant_time
-from cryptography.hazmat.primitives.ciphers.modes import CBC
-
-if typing.TYPE_CHECKING:
-    from cryptography.hazmat.backends.openssl.backend import Backend
-    from cryptography.hazmat.primitives import ciphers
-
-
-class _CMACContext:
-    def __init__(
-        self,
-        backend: Backend,
-        algorithm: ciphers.BlockCipherAlgorithm,
-        ctx=None,
-    ) -> None:
-        if not backend.cmac_algorithm_supported(algorithm):
-            raise UnsupportedAlgorithm(
-                "This backend does not support CMAC.",
-                _Reasons.UNSUPPORTED_CIPHER,
-            )
-
-        self._backend = backend
-        self._key = algorithm.key
-        self._algorithm = algorithm
-        self._output_length = algorithm.block_size // 8
-
-        if ctx is None:
-            registry = self._backend._cipher_registry
-            adapter = registry[type(algorithm), CBC]
-
-            evp_cipher = adapter(self._backend, algorithm, CBC)
-
-            ctx = self._backend._lib.CMAC_CTX_new()
-
-            self._backend.openssl_assert(ctx != self._backend._ffi.NULL)
-            ctx = self._backend._ffi.gc(ctx, self._backend._lib.CMAC_CTX_free)
-
-            key_ptr = self._backend._ffi.from_buffer(self._key)
-            res = self._backend._lib.CMAC_Init(
-                ctx,
-                key_ptr,
-                len(self._key),
-                evp_cipher,
-                self._backend._ffi.NULL,
-            )
-            self._backend.openssl_assert(res == 1)
-
-        self._ctx = ctx
-
-    def update(self, data: bytes) -> None:
-        res = self._backend._lib.CMAC_Update(self._ctx, data, len(data))
-        self._backend.openssl_assert(res == 1)
-
-    def finalize(self) -> bytes:
-        buf = self._backend._ffi.new("unsigned char[]", self._output_length)
-        length = self._backend._ffi.new("size_t *", self._output_length)
-        res = self._backend._lib.CMAC_Final(self._ctx, buf, length)
-        self._backend.openssl_assert(res == 1)
-
-        self._ctx = None
-
-        return self._backend._ffi.buffer(buf)[:]
-
-    def copy(self) -> _CMACContext:
-        copied_ctx = self._backend._lib.CMAC_CTX_new()
-        copied_ctx = self._backend._ffi.gc(
-            copied_ctx, self._backend._lib.CMAC_CTX_free
-        )
-        res = self._backend._lib.CMAC_CTX_copy(copied_ctx, self._ctx)
-        self._backend.openssl_assert(res == 1)
-        return _CMACContext(self._backend, self._algorithm, ctx=copied_ctx)
-
-    def verify(self, signature: bytes) -> None:
-        digest = self.finalize()
-        if not constant_time.bytes_eq(digest, signature):
-            raise InvalidSignature("Signature did not match digest.")