3
lį_b ć @ s¤ d dl mZmZmZ d dlZd dlmZ d dlmZ d dl m
Z
d dl m Z d dl
mZ dd Zdd
d Zd d
ZdddZdddZdddZG dd deZdS )é )Śabsolute_importŚdivisionŚprint_functionN)Ś _get_backend)ŚCipher)ŚAES)ŚECB)Śbytes_eqc C s¢ t t| t |j }t|}xttdD ]h}xbt|D ]V}|j||| }tjdtj d|d d
d || | d A }|dd
||< q6W q(W |dj
| S )Né z>Qé r é ó ių’’’) r r r Ś encryptorŚlenŚrangeŚupdateŚstructŚpackŚunpackŚjoin) Ś wrapping_keyŚaŚrŚbackendr ŚnŚjŚiŚb© r ś /usr/lib64/python3.6/keywrap.pyŚ
_wrap_core s ,r c sx t |}t| d kr tdt dk r0tdt d dkrHtdd } fd
d tdt dD }t| |||S )
Né é é z/The wrapping key must be a valid AES key lengthz)The key to wrap must be at least 16 bytesr r z-The key to wrap must be a multiple of 8 bytess ¦¦¦¦¦¦¦¦c s g | ]} ||d
qS )r r )Ś.0r )Ś key_to_wrapr r ś
1 s z aes_key_wrap..)r! r" r# )r r Ś
ValueErrorr r )r r% r r r r )r% r Ś aes_key_wrap% s r( c
C sØ t t| t |j }t|}xttdD ]p}xjtt|D ]Z}tjdtj d|d || | d A || }|j
|} | d d
}| dd
||< q>W q,W ||fS )Nr
z>Qr r r ių’’’) r r r Ś decryptorr Śreversedr r r r r )
r r r r r) r r r Zatrr r r r Ś _unwrap_core5 s "
r+ c s“ t |}t| d kr tddtjdt }dt d d } d| t dkrtt| t |j }|j | }|S fd d
t
d t dD }t | |||S d S )
Nr! r" r# z/The wrapping key must be a valid AES key lengths ¦YY¦z>ir ó c s g | ]} ||d
qS )r r )r$ r )r% r r r& \ s z-aes_key_wrap_with_padding..r )r! r" r# ) r r r' r r r r r r r r r )r r% r ŚaivZpadr r r r )r% r Śaes_key_wrap_with_paddingL s r. c st t |}t dk r tdt| dkr0tdt dkrztt| t |j }|j }|d d
}|dd
}d}nL fdd t d
t dD }|j
d
} t|}t | | ||\}}d j |}t
jd |d
d
\}
d| |
}t|d d
d sNd|d |
k o d| kn sN|d
krTt|| d
d| rTt |d
krb|S |d |
S d S )Nr! zMust be at least 16 bytesr" r# z/The wrapping key must be a valid AES key lengthr r c s g | ]} ||d
qS )r r )r$ r )Ś wrapped_keyr r r& q s z/aes_key_unwrap_with_padding..r r
z>Ié s ¦YY¦r, )r! r" r# )r r Ś
InvalidUnwrapr' r r r r) r r Śpopr+ r r r r ) r r/ r r) r r Śdatar r Z
encrypted_aivZmlir )r/ r Śaes_key_unwrap_with_padding` s2
*&
r4 c s t |}t dk r tdt d dkr4tdt| d
krHtdd } fd
d tdt dD }|jd}t| |||\}}t||st d j|S )Nr" zMust be at least 24 bytesr r z-The wrapped key must be a multiple of 8 bytesr! r# z/The wrapping key must be a valid AES key lengths ¦¦¦¦¦¦¦¦c s g | ]} ||d
qS )r r )r$ r )r/ r r r& s z"aes_key_unwrap..r
)r! r" r# ) r r r1 r' r r2 r+ r r )r r/ r r- r r r )r/ r Śaes_key_unwrap s
r5 c @ s e Zd ZdS )r1 N)Ś__name__Ś
__module__Ś __qualname__r r r r r1 s r1 )N)N)N)N)Z
__future__r r r r Z cryptography.hazmat.backendsr Z&cryptography.hazmat.primitives.ciphersr Z1cryptography.hazmat.primitives.ciphers.algorithmsr Z,cryptography.hazmat.primitives.ciphers.modesr Z,cryptography.hazmat.primitives.constant_timer r r( r+ r. r4 r5 Ś Exceptionr1 r r r r Ś s
+