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편집 파일: Salsa20.cpython-311.pyc
� O�Dg� � � � d dl mZ d dlmZmZmZmZmZmZm Z m Z d dl m Z edd� � Z G d� d� � Zd d �Zd Zd ZdS ) � )� _copy_bytes)�load_pycryptodome_raw_lib�create_string_buffer�get_raw_buffer� VoidPointer� SmartPointer�c_size_t� c_uint8_ptr�is_writeable_buffer)�get_random_byteszCrypto.Cipher._Salsa20a� int Salsa20_stream_init(uint8_t *key, size_t keylen, uint8_t *nonce, size_t nonce_len, void **pSalsaState); int Salsa20_stream_destroy(void *salsaState); int Salsa20_stream_encrypt(void *salsaState, const uint8_t in[], uint8_t out[], size_t len); c �( � e Zd ZdZd� Zdd�Zdd�ZdS )� Salsa20Cipherz�Salsa20 cipher object. Do not create it directly. Use :py:func:`new` instead. :var nonce: The nonce with length 8 :vartype nonce: byte string c �� � t |� � t vr t dt |� � z � � �t |� � dk r t dt |� � z � � �t dd|� � | _ t � � | _ t � t |� � t t |� � � � t |� � t t |� � � � | j � � � � � }|rt d� � �t | j � � � t j � � | _ d| _ t |� � | _ dS )zQInitialize a Salsa20 cipher object See also `new()` at the module level.z+Incorrect key length for Salsa20 (%d bytes)� z-Incorrect nonce length for Salsa20 (%d bytes)Nz'Error %d instantiating a Salsa20 cipher� )�len�key_size� ValueErrorr �noncer �_state�_raw_salsa20_lib�Salsa20_stream_initr r � address_ofr �get�Salsa20_stream_destroy� block_size)�self�keyr �results �w/builddir/build/BUILD/imunify360-venv-2.4.0/opt/imunify360/venv/lib64/python3.11/site-packages/Crypto/Cipher/Salsa20.py�__init__zSalsa20Cipher.__init__6 s; � � �s�8�8�8� #� #� � J�S�QT�X�X� U�V�V� V� �u�:�:��?�?� � L� ��Z�Z� (� )� )� )� !��t�U�3�3�� �!�m�m�� �!�5�5�#�C�(�(� ��S���*�*�#�E�*�*� ��U���,�,� � �.�.�0�0� 2� 2�� � H� � F�G�G� G�"�4�;�?�?�#4�#4�#3�#J�L� L�� � ����C���� � � � Nc � � |� t t |� � � � }n_|}t |� � st d� � �t |� � t |� � k r t dt |� � z � � �t � | j � � � t |� � t |� � t t |� � � � � � }|rt d|z � � �|�t |� � S dS )a� Encrypt a piece of data. Args: plaintext(bytes/bytearray/memoryview): The data to encrypt, of any size. Keyword Args: output(bytes/bytearray/memoryview): The location where the ciphertext is written to. If ``None``, the ciphertext is returned. Returns: If ``output`` is ``None``, the ciphertext is returned as ``bytes``. Otherwise, ``None``. Nz4output must be a bytearray or a writeable memoryviewz9output must have the same length as the input (%d bytes)z&Error %d while encrypting with Salsa20) r r r � TypeErrorr r �Salsa20_stream_encryptr r r r r )r � plaintext�output� ciphertextr s r �encryptzSalsa20Cipher.encryptS s � � �>�-�c�)�n�n�=�=�J�J� �J�&�v�.�.� X� � V�W�W�W��9�~�~��V���,�,� � "0�25�i�.�.�"A� B� B� B� "�8�8�)-�� � �):�):�)4�Y�)?�)?�)4�Z�)@�)@�)1�#�i�.�.�)A�)A� C� C�� � P� � E�� N�O�O� O� �>�!�*�-�-� -��4r" c � � | � ||�� � S # t $ r5}t t |� � � dd� � � � �d}~ww xY w)a� Decrypt a piece of data. Args: ciphertext(bytes/bytearray/memoryview): The data to decrypt, of any size. Keyword Args: output(bytes/bytearray/memoryview): The location where the plaintext is written to. If ``None``, the plaintext is returned. Returns: If ``output`` is ``None``, the plaintext is returned as ``bytes``. Otherwise, ``None``. )r' �enc�decN)r) r �str�replace)r r( r' �es r �decryptzSalsa20Cipher.decrypty s^ � � ;��<�<� �6�<�:�:� :��� ;� ;� ;� �S��V�V�^�^�E�5� 9� 9�:�:� :����� ;���s � � A�0A�A�N)�__name__� __module__� __qualname__�__doc__r! r) r0 � r" r r r . sV � � � � � �� �!� !� !�:$� $� $� $�L;� ;� ;� ;� ;� ;r" r Nc �D � |�t d� � }t | |� � S )a% Create a new Salsa20 cipher :keyword key: The secret key to use. It must be 16 or 32 bytes long. :type key: bytes/bytearray/memoryview :keyword nonce: A value that must never be reused for any other encryption done with this key. It must be 8 bytes long. If not provided, a random byte string will be generated (you can read it back via the ``nonce`` attribute of the returned object). :type nonce: bytes/bytearray/memoryview :Return: a :class:`Crypto.Cipher.Salsa20.Salsa20Cipher` object Nr )r r )r r s r �newr8 � s& � �" �}� ��#�#�� ��e� $� $�$r" r )� � r1 )�Crypto.Util.py3compatr �Crypto.Util._raw_apir r r r r r r r � Crypto.Randomr r r r8 r r r6 r" r �<module>r> s ��2 .� -� -� -� -� -�D� D� D� D� D� D� D� D� D� D� D� D� D� D� D� D� D� D� D� D� +� *� *� *� *� *�,�,�-E�� � � �[;� [;� [;� [;� [;� [;� [;� [;�|%� %� %� %�. � � ���r"