from typing import Union, Tuple, overload, Optional
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Buffer = bytes|bytearray|memoryview
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class ChaCha20Poly1305Cipher:
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nonce: bytes
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def __init__(self, key: Buffer, nonce: Buffer) -> None: ...
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def update(self, data: Buffer) -> None: ...
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@overload
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def encrypt(self, plaintext: Buffer) -> bytes: ...
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@overload
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def encrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
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@overload
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def decrypt(self, plaintext: Buffer) -> bytes: ...
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@overload
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def decrypt(self, plaintext: Buffer, output: Union[bytearray, memoryview]) -> None: ...
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def digest(self) -> bytes: ...
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def hexdigest(self) -> str: ...
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def verify(self, received_mac_tag: Buffer) -> None: ...
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def hexverify(self, received_mac_tag: str) -> None: ...
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def encrypt_and_digest(self, plaintext: Buffer) -> Tuple[bytes, bytes]: ...
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def decrypt_and_verify(self, ciphertext: Buffer, received_mac_tag: Buffer) -> bytes: ...
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def new(key: Buffer, nonce: Optional[Buffer] = ...) -> ChaCha20Poly1305Cipher: ...
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block_size: int
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key_size: int
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