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Choose your hash function wisely. Some have known collision weaknesses. sha384 and sha512 will be slow on 32 bit platforms. Hash objects have these methods: - update(data): Update the hash object with the bytes in data. Repeated calls are equivalent to a single call with the concatenation of all the arguments. - digest(): Return the digest of the bytes passed to the update() method so far as a bytes object. - hexdigest(): Like digest() except the digest is returned as a string of double length, containing only hexadecimal digits. - copy(): Return a copy (clone) of the hash object. This can be used to efficiently compute the digests of datas that share a common initial substring. For example, to obtain the digest of the byte string 'Nobody inspects the spammish repetition': >>> import hashlib >>> m = hashlib.md5() >>> m.update(b"Nobody inspects") >>> m.update(b" the spammish repetition") >>> m.digest() b'\xbbd\x9c\x83\xdd\x1e\xa5\xc9\xd9\xde\xc9\xa1\x8d\xf0\xff\xe9' More condensed: >>> hashlib.sha224(b"Nobody inspects the spammish repetition").hexdigest() 'a4337bc45a8fc544c03f52dc550cd6e1e87021bc896588bd79e901e2' )�md5�sha1�sha224�sha256�sha384�sha512�blake2b�blake2s�sha3_224�sha3_256�sha3_384�sha3_512� shake_128� shake_256)�new�algorithms_guaranteed�algorithms_available� pbkdf2_hmacr r c C s� t }|�| �}|d ur |S z�| dv r dd l}|j |d< |d< n�| dv r2dd l}|j |d< |d< nx| dv rMdd l}|j |d < |d < |j |d < |d < n]| d v rhdd l }|j |d< |d< |j |d< |d< nB| dv r{dd l }|j |d< |j|d< n/| dv r�dd l}|j|d< |j|d< |j|d< |j|d< n| dv r�dd l}|j|d< |j|d < W n ty� Y nw |�| �}|d ur�|S td | ��) N> �SHA1r � r r > r �MD5r r > �SHA256r �SHA224r r r r r > r r �SHA512�SHA384r r r r > r r r r > r r r r r r r r > r r r r zunsupported hash type )�__builtin_constructor_cache�get�_sha1r �_md5r �_sha256r r �_sha512r r �_blake2r r �_sha3r r r r r r � ImportError� ValueError) �name�cache� constructorr r r r r r! � r' �./opt/alt/python310/lib64/python3.10/hashlib.py�__get_builtin_constructorR sR � � r) c C sN | t v rt| �S zttd| �}|dd� |W S ttfy& t| � Y S w )NZopenssl_F)Zusedforsecurity)�__block_openssl_constructorr) �getattr�_hashlib�AttributeErrorr# )r$ �fr' r' r( �__get_openssl_constructor~ s �r/ � c K s t | �|fi |��S )z�new(name, data=b'', **kwargs) - Return a new hashing object using the named algorithm; optionally initialized with data (which must be a bytes-like object). )r) �r$ �data�kwargsr' r' r( �__py_new� s r4 c K sR | t v rt| �|fi |��S z tj| |fi |��W S ty( t| �|� Y S w )z�new(name, data=b'') - Return a new hashing object using the named algorithm; optionally initialized with data (which must be a bytes-like object). )r* r) r, r r# r1 r' r' r( � __hash_new� s �r5 r N)r )�warnc c � � | ]}|d A V qdS )�\ Nr' ��.0�xr' r' r( � <genexpr>� � � r< � c c r7 )�6 Nr' r9 r' r' r( r< � r= c C s� t dtdd� t| t�st| ��t|ttf�s tt|��}t|ttf�s*tt|��}t| �}t| �}t |dd�}t |�|krEt| |�� � }|d|t |� }|� |� t�� |� |� t�� ||fdd�}|d k rnt|��|d u ru|j}|d k r}t|��d } d } tj} t | �|k r�||| �d d � �} t�| d �} t|d �D ] }|| �} | | | d �N } q�| d 7 } | | �|jd �7 } t | �|k s�| d |� S )z�Password based key derivation function 2 (PKCS #5 v2.0) This Python implementations based on the hmac module about as fast as OpenSSL's PKCS5_PBKDF2_HMAC for short passwords and much faster for long passwords. z5Python implementation of pbkdf2_hmac() is deprecated.� )�category� stacklevelZ block_size�@ � c S s0 |� � }|� � }|�| � |�|�� � |�� S �N)�copy�update�digest)�msg�inner�outerZicpyZocpyr' r' r( �prf� s zpbkdf2_hmac.<locals>.prf� Nr0 � Zbig)�_warn�DeprecationWarning� isinstance�str� TypeError�bytes� bytearray� memoryviewr r+ �lenrH rG � translate� _trans_36� _trans_5Cr# Z digest_size�int� from_bytes�to_bytes�range)Z hash_nameZpasswordZsaltZ iterationsZdklenrJ rK Z blocksizerL ZdkeyZloopr\ �prevZrkey�ir' r' r( r � sN � � r )�scryptz code for hash %s was not found.)r0 rE ) �__doc__Z__always_supported�setr r �__all__r r* r) r/ r4 r5 r, r Z __get_hash�unionZopenssl_md_meth_namesr" r �warningsr6 rO rT r^ rZ rY ra Z __func_name�globalsr# ZloggingZ exceptionr' r' r' r( �<module> s\ 5�, � � �C � �
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