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o �hJ � @ s< d dl mZ d dlZd dlZd dlmZ d dlmZ ej j Z ej j Z ej jZej jZej jZej jZe d Zej jZej jZej jZ ej j Z ej j Z ej j!Z"ej j#Z$ej j%Z&ej j'Z(ej j)Z*de$ Z+de& Z,e(e*ej-j.fde/de0d e0d e/d e/d ej-j1d e0fdd�Z2e$e&fde0d e/d e/d e0fdd�Z3de0de0d e4fdd�Z5dS )� )�castN)� exceptions)�ensure� � �size�password�salt�opslimit�memlimit�encoder�returnc C sz t tdtjd� t t|�tkdtt|�f tjd� tj� ||�\}}}|d } |� tjj ||t t d| �||| | d��S )al Derive a ``size`` bytes long key from a caller-supplied ``password`` and ``salt`` pair using the scryptsalsa208sha256 memory-hard construct. the enclosing module provides the constants - :py:const:`.OPSLIMIT_INTERACTIVE` - :py:const:`.MEMLIMIT_INTERACTIVE` - :py:const:`.OPSLIMIT_SENSITIVE` - :py:const:`.MEMLIMIT_SENSITIVE` - :py:const:`.OPSLIMIT_MODERATE` - :py:const:`.MEMLIMIT_MODERATE` as a guidance for correct settings respectively for the interactive login and the long term key protecting sensitive data use cases. :param size: derived key size, must be between :py:const:`.BYTES_MIN` and :py:const:`.BYTES_MAX` :type size: int :param password: password used to seed the key derivation procedure; it length must be between :py:const:`.PASSWD_MIN` and :py:const:`.PASSWD_MAX` :type password: bytes :param salt: **RANDOM** salt used in the key derivation procedure; its length must be exactly :py:const:`.SALTBYTES` :type salt: bytes :param opslimit: the time component (operation count) of the key derivation procedure's computational cost; it must be between :py:const:`.OPSLIMIT_MIN` and :py:const:`.OPSLIMIT_MAX` :type opslimit: int :param memlimit: the memory occupation component of the key derivation procedure's computational cost; it must be between :py:const:`.MEMLIMIT_MIN` and :py:const:`.MEMLIMIT_MAX` :type memlimit: int :rtype: bytes :raises nacl.exceptions.UnavailableError: If called when using a minimal build of libsodium. .. versionadded:: 1.2 � Not available in minimal build��raisingz.The salt must be exactly %s, not %s bytes longi � )�maxmem�dklen)r � AVAILABLE�exc�UnavailableError�len� SALTBYTES� ValueError�nacl�bindings� nacl_bindings_pick_scrypt_params�encode�%crypto_pwhash_scryptsalsa208sha256_llr �int) r r r r r r �n_log2�r�pr � r# �E/usr/local/CyberCP/lib/python3.10/site-packages/nacl/pwhash/scrypt.py�kdf; s6 9� �� � ��r% c C s t tdtjd� tj�| ||�S )a$ Hashes a password with a random salt, using the memory-hard scryptsalsa208sha256 construct and returning an ascii string that has all the needed info to check against a future password The default settings for opslimit and memlimit are those deemed correct for the interactive user login case. :param bytes password: :param int opslimit: :param int memlimit: :rtype: bytes :raises nacl.exceptions.UnavailableError: If called when using a minimal build of libsodium. .. versionadded:: 1.2 r r )r r r r r r �&crypto_pwhash_scryptsalsa208sha256_str)r r r r# r# r$ �str� s ��r' � password_hashc C s> t tdtjd� t t| �tkdtjj tj d� tj� | |�S )aW Takes the output of scryptsalsa208sha256 and compares it against a user provided password to see if they are the same :param password_hash: bytes :param password: bytes :rtype: boolean :raises nacl.exceptions.UnavailableError: If called when using a minimal build of libsodium. .. versionadded:: 1.2 r r z/The password hash must be exactly %s bytes long) r r r r r � PWHASH_SIZEr r �+crypto_pwhash_scryptsalsa208sha256_STRBYTESr �-crypto_pwhash_scryptsalsa208sha256_str_verify)r( r r# r# r$ �verify� s � ���r, )6�typingr � nacl.bindingsr � nacl.encodingr r �nacl.exceptionsr r r* �_strbytes_plus_one�&has_crypto_pwhash_scryptsalsa208sha256r �,crypto_pwhash_scryptsalsa208sha256_STRPREFIX� STRPREFIX�,crypto_pwhash_scryptsalsa208sha256_SALTBYTESr �-crypto_pwhash_scryptsalsa208sha256_PASSWD_MIN� PASSWD_MIN�-crypto_pwhash_scryptsalsa208sha256_PASSWD_MAX� PASSWD_MAXr) �,crypto_pwhash_scryptsalsa208sha256_BYTES_MIN� BYTES_MIN�,crypto_pwhash_scryptsalsa208sha256_BYTES_MAX� BYTES_MAX�/crypto_pwhash_scryptsalsa208sha256_MEMLIMIT_MIN� MEMLIMIT_MIN�/crypto_pwhash_scryptsalsa208sha256_MEMLIMIT_MAX� MEMLIMIT_MAX�/crypto_pwhash_scryptsalsa208sha256_OPSLIMIT_MIN� OPSLIMIT_MIN�/crypto_pwhash_scryptsalsa208sha256_OPSLIMIT_MAX� OPSLIMIT_MAX�7crypto_pwhash_scryptsalsa208sha256_OPSLIMIT_INTERACTIVE�OPSLIMIT_INTERACTIVE�7crypto_pwhash_scryptsalsa208sha256_MEMLIMIT_INTERACTIVE�MEMLIMIT_INTERACTIVE�5crypto_pwhash_scryptsalsa208sha256_OPSLIMIT_SENSITIVE�OPSLIMIT_SENSITIVE�5crypto_pwhash_scryptsalsa208sha256_MEMLIMIT_SENSITIVE�MEMLIMIT_SENSITIVE�OPSLIMIT_MODERATE�MEMLIMIT_MODERATE�encoding� RawEncoderr �bytes�Encoderr% r' �boolr, r# r# r# r$ �<module> st ����������� �]���� �!
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