o 5Î hÛMã@sØddlZddlmZddlmZddlmZmZmZmZddl m Z ddl m Z m Z ddlmZmZmZdZd Zd Zd Zd Zd ZdZdZdZdZdZdZdZdZdZ Gdd„de!ƒZ"Gdd„de#ƒZ$Gdd„de#ƒZ%dS)éN)ÚHash)ÚRandom)Ú DerSequenceÚDerOctetStringÚ DerObjectIdÚ DerInteger)ÚAES)ÚpadÚunpad)ÚPBKDF1ÚPBKDF2Úscryptz1.2.840.113549.1.5.3z1.2.840.113549.1.5.6z1.2.840.113549.1.5.10z1.2.840.113549.1.5.11z1.2.840.113549.1.5.13z1.2.840.113549.1.5.12z1.3.6.1.4.1.11591.4.11z1.2.840.113549.2.7z1.2.840.113549.3.7z2.16.840.1.101.3.4.1.2z2.16.840.1.101.3.4.1.22z2.16.840.1.101.3.4.1.42z2.16.840.1.101.3.4.1.6z2.16.840.1.101.3.4.1.26z2.16.840.1.101.3.4.1.46c@s eZdZdS)Ú PbesErrorN)Ú__name__Ú __module__Ú __qualname__©rrúc/var/www/html/construction_image-detection-poc/venv/lib/python3.10/site-packages/Crypto/IO/_PBES.pyrCsrc@seZdZdZedd„ƒZdS)ÚPBES1z¼Deprecated encryption scheme with password-based key derivation (originally defined in PKCS#5 v1.5, but still present in `v2.0`__). .. __: http://www.ietf.org/rfc/rfc2898.txt cCsŠtƒ |¡}tƒ |d¡}tƒ |d¡j}tƒ |d¡j}i}|tkr7ddlm}ddl m }|} |} nK|t krPddlm}ddl m } |} | } d|d<n2|t kreddlm} ddl m }| } |} n|tkr~ddlm} ddl m } | } | } d|d<ntd ƒ‚tƒj|dd d } tƒ | d¡j}| d}t||d || ƒ}|d d…|dd …}}| j|| j|fi|¤Ž}| |¡}t||jƒS)axDecrypt a piece of data using a passphrase and *PBES1*. The algorithm to use is automatically detected. :Parameters: data : byte string The piece of data to decrypt. passphrase : byte string The passphrase to use for decrypting the data. :Returns: The decrypted data, as a binary string. ré)ÚMD5)ÚDES)ÚARC2é@Úeffective_keylen)ÚSHA1zUnknown OID for PBES1é©Ú nr_elementséNé)rÚdecoderÚpayloadrÚvalueÚ_OID_PBE_WITH_MD5_AND_DES_CBCÚ Crypto.HashrÚ Crypto.CipherrÚ_OID_PBE_WITH_MD5_AND_RC2_CBCrÚ_OID_PBE_WITH_SHA1_AND_DES_CBCrÚ_OID_PBE_WITH_SHA1_AND_RC2_CBCrr ÚnewÚMODE_CBCÚdecryptr Ú block_size)ÚdataÚ passphraseÚenc_private_key_infoÚencrypted_algorithmÚencrypted_dataÚpbe_oidÚ cipher_paramsrrÚhashmodÚmodulerrÚ pbe_paramsÚsaltÚ iterationsÚkey_ivÚkeyÚivÚcipherÚptrrrr,„sH             z PBES1.decryptN)rrrÚ__doc__Ú staticmethodr,rrrrr}src@s*eZdZdZeddd„ƒZedd„ƒZdS)ÚPBES2z‡Encryption scheme with password-based key derivation (defined in `PKCS#5 v2.0`__). .. __: http://www.ietf.org/rfc/rfc2898.txt.Nc!Cs‚|duri}|durt ¡j}t d¡}| |¡}|dur#td|ƒ‚| d¡r5d}| d¡}| d¡} nd}| d¡} d } | d krXd d l m } d } | } | j }t }d|dƒi}n„| dkrld} t } t j }t}d|dƒi}np| dkr€d } t } t j }t}d|dƒi}n\| dkr”d} t } t j }t}d|dƒi}nH| dkrªd} t } t j}t}d|dƒi}d} n2| dkrÀd } t } t j}t}d|dƒi}d} n| dkrÖd} t } t j}t}d|dƒi}d} ntd| ƒ‚t| ¡ƒd }|| dd¡ƒ}|dkr?| dd¡}t |¡}t||| ||d}tt|ƒt|ƒgƒ}|d kr6z tjjd!|d"j}Wn ty+td#ƒ‚w|  tt!|ƒgƒ¡tt!t"ƒ|gƒ}n@|dkrv| dd$¡}| d%d¡}| d&d'¡}t#||| |||ƒ}tt!t$ƒtt|ƒt|ƒt|ƒt|ƒgƒgƒ}n td(| d'¡ƒ‚| j||fi|¤Ž}| r˜| %|¡\}}||}n | &t'||j(ƒ¡}tt!|ƒt|ƒgƒ}ttt!t)ƒt||gƒgƒt|ƒgƒ} |  *¡S))a¦ Encrypt a piece of data using a passphrase and *PBES2*. :Parameters: data : byte string The piece of data to encrypt. passphrase : byte string The passphrase to use for encrypting the data. protection : string The identifier of the encryption algorithm to use. The default value is '``PBKDF2WithHMAC-SHA1AndDES-EDE3-CBC``'. prot_params : dictionary Parameters of the protection algorithm. +------------------+-----------------------------------------------+ | Key | Description | +==================+===============================================+ | iteration_count | The KDF algorithm is repeated several times to| | | slow down brute force attacks on passwords | | | (called *N* or CPU/memory cost in scrypt). | | | | | | The default value for PBKDF2 is 1 000. | | | The default value for scrypt is 16 384. | +------------------+-----------------------------------------------+ | salt_size | Salt is used to thwart dictionary and rainbow | | | attacks on passwords. The default value is 8 | | | bytes. | +------------------+-----------------------------------------------+ | block_size | *(scrypt only)* Memory-cost (r). The default | | | value is 8. | +------------------+-----------------------------------------------+ | parallelization | *(scrypt only)* CPU-cost (p). The default | | | value is 1. | +------------------+-----------------------------------------------+ randfunc : callable Random number generation function; it should accept a single integer N and return a string of random data, N bytes long. If not specified, a new RNG will be instantiated from ``Crypto.Random``. :Returns: The encrypted data, as a binary string. 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