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int SHA256_init(void **shaState);
int SHA256_destroy(void *shaState);
int SHA256_update(void *hs,
const uint8_t *buf,
size_t len);
int SHA256_digest(const void *shaState,
uint8_t *digest,
size_t digest_size);
int SHA256_copy(const void *src, void *dst);
int SHA256_pbkdf2_hmac_assist(const void *inner,
const void *outer,
const uint8_t *first_digest,
uint8_t *final_digest,
size_t iterations,
size_t digest_size);
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SHA256Hasha� A SHA-256 hash object.
Do not instantiate directly. Use the :func:`new` function.
:ivar oid: ASN.1 Object ID
:vartype oid: string
:ivar block_size: the size in bytes of the internal message block,
input to the compression function
:vartype block_size: integer
:ivar digest_size: the size in bytes of the resulting hash
:vartype digest_size: integer
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|� � � � � � }|rt d|z � � �dS )z�Continue hashing of a message by consuming the next chunk of data.
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�lenr )r r r s r r zSHA256Hash.updateR sv � � !�.�.�t�{���/@�/@�/:�4�/@�/@�/7��D� � �/B�/B�D� D�� � '� � F� %� &� '� '�
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| j � � � � }|rt d|z � � �t |� � S )z�Return the **binary** (non-printable) digest of the message that has been hashed so far.
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:rtype: byte string
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'� �c�"�"�"r c �d � d� d� | � � � D � � � � S )z�Return the **printable** digest of the message that has been hashed so far.
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:rtype: string
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<listcomp>z(SHA256Hash.hexdigest.<locals>.<listcomp>z s# � �@�@�@�Q���a���(�@�@�@r )�joinr' )r s r � hexdigestzSHA256Hash.hexdigestr s- � � �w�w�@�@�$�+�+�-�-�@�@�@�A�A�Ar c �� � t � � }t � | j � � � |j � � � � � }|rt d|z � � �|S )a4 Return a copy ("clone") of the hash object.
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object.
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share a common initial substring.
:return: A hash object of the same type
z Error %d while copying SHA256)r
r � SHA256_copyr r r )r �cloner s r �copyzSHA256Hash.copy| se � � � � �� �,�,�T�[�_�_�->�->�-2�\�-=�-=�-?�-?�A� A�� � G� � <�v� E�F�F� F�� r c � � t |� � S )z#Create a fresh SHA-256 hash object.)r
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Nc �D � t � � � | � � S )a Create a new hash object.
:parameter data:
Optional. The very first chunk of the message to hash.
It is equivalent to an early call to :meth:`SHA256Hash.update`.
:type data: byte string/byte array/memoryview
:Return: A :class:`SHA256Hash` hash object
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