관리-도구
편집 파일: pbkdf2.cpython-39.opt-1.pyc
a f�Wc� � @ s� d Z ddlmZ ddlZe�e�ZddlmZ ddl m Z ddl m Z ddl mZmZmZmZmZ g d�Zdd lmZ ed e� e d d ed d�e�Zi adZdd� Zddd�Zddd�ZdS )z�passlib.pbkdf2 - PBKDF2 support this module is getting increasingly poorly named. maybe rename to "kdf" since it's getting more key derivation functions added. � )�divisionN)�ExpectedTypeError)�deprecated_function)�native_string_types)�norm_hash_name� lookup_hash�pbkdf1� pbkdf2_hmac� compile_hmac)r �get_prfr �pbkdf2)�warnz�the module 'passlib.utils.pbkdf2' is deprecated as of Passlib 1.7, and will be removed in Passlib 2.0, please use 'passlib.crypto' insteadz1.7z1.8z$passlib.crypto.digest.norm_hash_name)Z deprecatedZremovedZ func_moduleZ replacement)Zhmac_zhmac-c s� | t v rt | S t| t�r^| �t�s2td| f ��t| dd� �j� � fdd�}||jj f}n,t | �r~t | dd��}| |f}n t | dd ��|t | < |S ) a Lookup pseudo-random family (PRF) by name. :arg name: This must be the name of a recognized prf. Currently this only recognizes names with the format :samp:`hmac-{digest}`, where :samp:`{digest}` is the name of a hash function such as ``md5``, ``sha256``, etc. todo: restore text about callables. :raises ValueError: if the name is not known :raises TypeError: if the name is not a callable or string :returns: a tuple of :samp:`({prf_func}, {digest_size})`, where: * :samp:`{prf_func}` is a function implementing the specified PRF, and has the signature ``prf_func(secret, message) -> digest``. * :samp:`{digest_size}` is an integer indicating the number of bytes the function returns. Usage example:: >>> from passlib.utils.pbkdf2 import get_prf >>> hmac_sha256, dsize = get_prf("hmac-sha256") >>> hmac_sha256 <function hmac_sha256 at 0x1e37c80> >>> dsize 32 >>> digest = hmac_sha256('password', 'message') .. deprecated:: 1.7 This function is deprecated, and will be removed in Passlib 2.0. This only related replacement is :func:`passlib.crypto.digest.compile_hmac`. zunknown prf algorithm: %r� Nc s t � | �|�S )N)r )�key�msg��digest� �8/usr/lib/python3.9/site-packages/passlib/utils/pbkdf2.py�hmach s zget_prf.<locals>.hmac� x� yzstr or callablezprf name) � _prf_cache� isinstancer � startswith�_HMAC_PREFIXES� ValueErrorr �nameZ digest_info� digest_size�callable�lenr )r r �recordr r r r r 9 s ) r �sha1c C s t || |||�S )aL pkcs#5 password-based key derivation v1.5 :arg secret: passphrase to use to generate key :arg salt: salt string to use when generating key :param rounds: number of rounds to use to generate key :arg keylen: number of bytes to generate (if ``None``, uses digest's native size) :param hash: hash function to use. must be name of a hash recognized by hashlib. :returns: raw bytes of generated key .. note:: This algorithm has been deprecated, new code should use PBKDF2. Among other limitations, ``keylen`` cannot be larger than the digest size of the specified hash. .. deprecated:: 1.7 This has been relocated to :func:`passlib.crypto.digest.pbkdf1`, and this version will be removed in Passlib 2.0. *Note the call signature has changed.* )�_pbkdf1)�secret�salt�rounds�keylen�hashr r r r w s r � hmac-sha1c C s@ t |�s t|t�r$|�t�s$td��|dd� }t|| |||�S )aW pkcs#5 password-based key derivation v2.0 :arg secret: passphrase to use to generate key :arg salt: salt string to use when generating key :param rounds: number of rounds to use to generate key :arg keylen: number of bytes to generate. if set to ``None``, will use digest size of selected prf. :param prf: psuedo-random family to use for key strengthening. this must be a string starting with ``"hmac-"``, followed by the name of a known digest. this defaults to ``"hmac-sha1"`` (the only prf explicitly listed in the PBKDF2 specification) .. rst-class:: warning .. versionchanged 1.7: This argument no longer supports arbitrary PRF callables -- These were rarely / never used, and created too many unwanted codepaths. :returns: raw bytes of generated key .. deprecated:: 1.7 This has been deprecated in favor of :func:`passlib.crypto.digest.pbkdf2_hmac`, and will be removed in Passlib 2.0. *Note the call signature has changed.* z1non-HMAC prfs are not supported as of Passlib 1.7r N)r r r r r �NotImplementedErrorr )r$ r% r& r' Zprfr r r r r � s % r )Nr" )Nr) ) �__doc__Z __future__r ZloggingZ getLogger�__name__�logZ passlib.excr Zpasslib.utils.decorr Zpasslib.utils.compatr Zpasslib.crypto.digestr r r r# r r �__all__�warningsr �DeprecationWarningr r r r r r r r �<module> s* ���>