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a b�h�$ � @ sr d dl mZ d dlmZmZ d dlmZ d dlmZm Z m Z m Z m Z m Z mZ edd�ZG dd� de�Zd d � Zd S ) � )� unhexlify)�bord�tobytes)�get_random_bytes)�load_pycryptodome_raw_lib� VoidPointer� SmartPointer�create_string_buffer�get_raw_buffer�c_size_t� c_uint8_ptrzCryptodome.Hash._BLAKE2ba� 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); c @ sL e Zd ZdZdZdd� Zdd� Zdd� Zd d � Zd d � Z d d� Z dd� Z dS )� 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 C s� || _ || _d| _|dv r,|s,dt|� | _t� }t�|�� t |�t t |��t |��}|rft d| ��t |�� tj�| _|r�| �|� d S )NF)� � �0 r z1.3.6.1.4.1.1722.12.2.1.z$Error %d while instantiating BLAKE2b)� digest_size�_update_after_digest� _digest_done�str�oidr �_raw_blake2b_libZ blake2b_initZ address_ofr r �len� ValueErrorr �getZblake2b_destroy�_state�update)�self�data�key� digest_bytes�update_after_digest�state�result� r$ ��/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/Cryptodome/Hash/BLAKE2b.py�__init__L s$ � �zBLAKE2b_Hash.__init__c C sH | j r| jstd��t�| j�� t|�tt |���}|rDt d| ��| 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 Zblake2b_updater r r r r r )r r r# r$ r$ r% r f s � zBLAKE2b_Hash.updatec C sB t d�}t�| j�� |�}|r*td| ��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 Zblake2b_digestr r r r r r )r Zbfrr# r$ r$ r% �digestx s � zBLAKE2b_Hash.digestc C s d� dd� t| �� �D ��S )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 � c S s g | ]}d t |� �qS )z%02x)r )�.0�xr$ r$ r% � <listcomp>� � z*BLAKE2b_Hash.hexdigest.<locals>.<listcomp>)�join�tupler( )r r$ r$ r% � hexdigest� s zBLAKE2b_Hash.hexdigestc C sD t d�}td||d�}td|| �� d�}|�� |�� kr@td��dS )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 �newr( r )r Zmac_tag�secretZmac1Zmac2r$ r$ r% �verify� s zBLAKE2b_Hash.verifyc C s | � tt|��� dS )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)r6 r r )r Z hex_mac_tagr$ r$ r% � hexverify� s zBLAKE2b_Hash.hexverifyc K s( d|vrd|vr| j |d< tf i |��S )zQReturn a new instance of a BLAKE2b hash object. See :func:`new`. r r3 )r r4 )r �kwargsr$ r$ r% r4 � s zBLAKE2b_Hash.newN) �__name__� __module__� __qualname__�__doc__� block_sizer& r r( r0 r6 r7 r4 r$ r$ r$ r% r : s r c K s� | � dd�}| � dd�}| � dd�}| � dd�}d||fvrDtd��d||fkrTd }|dur|d | krpd ks�n td ��n0d | kr�d kr�n n|d r�td��|d }| � dd�}t|�d kr�td��| r�tdt| � ��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 r3 z*Only one digest parameter must be provided)NNr � z!'digest_bytes' not in range 1..64� i z3'digest_bytes' not in range 8..512, with steps of 8r r- z"BLAKE2s key cannot exceed 64 byteszUnknown parameters: )�popr' r r r r )r8 r r! r r3 r r$ r$ r% r4 � s( r4 N)�binasciir ZCryptodome.Util.py3compatr r ZCryptodome.Randomr ZCryptodome.Util._raw_apir r r r r r r r �objectr r4 r$ r$ r$ r% �<module> s $�
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