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int blake2b_init(void **state,
const uint8_t *key,
size_t key_size,
size_t digest_size);
int blake2b_destroy(void *state);
int blake2b_update(void *state,
const uint8_t *buf,
size_t len);
int blake2b_digest(const void *state,
uint8_t digest[64]);
int blake2b_copy(const void *src, void *dst);
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) � BLAKE2b_Hasha� A BLAKE2b 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
�@ c � � || _ || _ d| _ |dv r|sdt |� z | _ t � }t j |j � t |� t t |� � t |� � }|rt d|z � �t |j � t j � | _ |r| j# |� y y )NF)� � �0 r z1.3.6.1.4.1.1722.12.2.1.z$Error %d while instantiating BLAKE2b)� digest_size�_update_after_digest� _digest_done�str�oidr �_raw_blake2b_lib� blake2b_init�
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ValueErrorr �get�blake2b_destroy�_state�update)�self�data�key� digest_bytes�update_after_digest�state�results �9/usr/lib/python3/dist-packages/Cryptodome/Hash/BLAKE2b.py�__init__zBLAKE2b_Hash.__init__L s� � � (���$7��!� !��� �+� +�C�1�C� �4E�E�D�H��
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� � C�f� L�M� M�"�5�9�9�;�#3�#C�#C�E�� � � �K�K�� � � c � � | j r| j s t d� �t j | j
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� t |� t t |� � � }|rt d|z � �| S )z�Continue hashing of a message by consuming the next chunk of data.
Args:
data (bytes/bytearray/memoryview): The next chunk of the message being hashed.
z8You can only call 'digest' or 'hexdigest' on this objectz#Error %d while hashing BLAKE2b data) r r � TypeErrorr �blake2b_updater! r r
r r r )r# r$ r) s r* r" zBLAKE2b_Hash.updatef sn � � � � �T�%>�%>�� V�W� W�!�0�0���� � �1B�1<�T�1B�19�#�d�)�1D�F�� � � B�V� K�L� L�� r, c �� � t d� }t j | j j � |� }|rt d|z � �d| _ t |� d| j S )z�Return the **binary** (non-printable) digest of the message that has been hashed so far.
:return: The hash digest, computed over the data processed so far.
Binary form.
:rtype: byte string
r z&Error %d while creating BLAKE2b digestTN) r
r �blake2b_digestr! r r r r r )r# �bfrr) s r* �digestzBLAKE2b_Hash.digestx sc � � #�2�&��!�0�0���� � �1B�14�6�� � � E�� N�O� O� ��� �c�"�#4�D�$4�$4�5�5r, c � � dj t | j � � D �cg c] }dt |� z �� c}� S c c}w )z�Return the **printable** digest of the message that has been hashed so far.
:return: The hash digest, computed over the data processed so far.
Hexadecimal encoded.
:rtype: string
� z%02x)�join�tupler3 r )r# �xs r* � hexdigestzBLAKE2b_Hash.hexdigest� s5 � � �w�w�%�� � �
�2F�G�Q���a��(�G�H�H��Gs �Ac �� � t d� }t d||�� }t d|| j � �� }|j � |j � k7 r t d� �y)a` Verify that a given **binary** MAC (computed by another party)
is valid.
Args:
mac_tag (bytes/bytearray/memoryview): the expected MAC of the message.
Raises:
ValueError: if the MAC does not match. It means that the message
has been tampered with or that the MAC key is incorrect.
� � )� digest_bitsr% r$ zMAC check failedN)r �newr3 r )r# �mac_tag�secret�mac1�mac2s r* �verifyzBLAKE2b_Hash.verify� sU � � "�"�%���s��W�=���s��T�[�[�]�C�� �;�;�=�D�K�K�M� )� � /�0� 0� *r, c �J � | j t t |� � � y)an Verify that a given **printable** MAC (computed by another party)
is valid.
Args:
hex_mac_tag (string): the expected MAC of the message, as a hexadecimal string.
Raises:
ValueError: if the MAC does not match. It means that the message
has been tampered with or that the MAC key is incorrect.
N)rC r r )r# � hex_mac_tags r* � hexverifyzBLAKE2b_Hash.hexverify� s � �
� � �I�g�k� 2�3�4r, c �F � d|vrd|vr| j |d< t di |��S )zQReturn a new instance of a BLAKE2b hash object.
See :func:`new`.
r& r= � )r r> )r# �kwargss r* r> zBLAKE2b_Hash.new� s/ � �
�� '�M��,G�%)�%5�%5�F�>� "��}�V�}� r, N) �__name__�
__module__� __qualname__�__doc__�
block_sizer+ r" r3 r9 rC rF r> rH r, r* r r : s2 � � � �J� �4�$6�&I�1�* 5� r, r c � � | j dd� }| j dd� }| j dd� }| j dd� }d||fvr t d� �d||fk( rd }|�"d
|cxk rd k sDt d � � t d � �d |cxk rd
k rn t d� �|d z r t d� �|d z }| j dd� }t |� d kD r t d� �| rt dt | � z � �t ||||� S )a� Create a new hash object.
Args:
data (bytes/bytearray/memoryview):
Optional. The very first chunk of the message to hash.
It is equivalent to an early call to :meth:`BLAKE2b_Hash.update`.
digest_bytes (integer):
Optional. The size of the digest, in bytes (1 to 64). Default is 64.
digest_bits (integer):
Optional and alternative to ``digest_bytes``.
The size of the digest, in bits (8 to 512, in steps of 8).
Default is 512.
key (bytes/bytearray/memoryview):
Optional. The key to use to compute the MAC (1 to 64 bytes).
If not specified, no key will be used.
update_after_digest (boolean):
Optional. By default, a hash object cannot be updated anymore after
the digest is computed. When this flag is ``True``, such check
is no longer enforced.
Returns:
A :class:`BLAKE2b_Hash` hash object
r$ Nr' Fr& r= z*Only one digest parameter must be provided)NNr � z!'digest_bytes' not in range 1..64� i z2'digest_bits' not in range 8..512, with steps of 8r% r, z"BLAKE2b key cannot exceed 64 byteszUnknown parameters: )�popr. r r r r )rI r$ r' r& r= r% s r* r> r> � s6 � �2 �:�:�f�d� #�D� �*�*�%:�E�B���:�:�n�d�3�L��*�*�]�D�1�K� �L�+�.�.��D�E�E�� �k�2�2�� �� ��\�'�R�'� � @�A� A� (� � @�A� A��[�'�C�'� � /� 0�
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