σ
θbXc @` sΰ d d l m Z m Z m Z d d l m Z d d l m Z m Z m Z d d l
m Z d d l m
Z
e j e j e j e j e j e j d e f d Y Z e j e j d e f d Y Z d
S( i ( t absolute_importt divisiont print_function( t utils( t
InvalidTagt UnsupportedAlgorithmt _Reasons( t ciphers( t modest _CipherContextc B` sG e Z d Z d Z d Z d Z d Z d Z e j d Z
RS( i i c C` sf | | _ | | _ | | _ | | _ d | _ t | j t j rX | j j d | _
n d | _
| j j j } | j j
j | | j j j } | j j } y | t | t | f } WnA t k
rt d j | j | rξ | j n | t j n X| | j | | } | | j j
j k rat d j | j | rL| j n | t j n t | t j r| j } n- t | t j r| j } n | j j
j } | j j j | | | j j
j | j j
j | j j
j | }
| j j |
d k | j j j | t! | j" }
| j j |
d k t | t j# rτ| j j j$ | | j j j% t! | | j j
j }
| j j |
d k | | j& k rτ| j j j$ | | j j j' t! | j( | j( }
| j j |
d k qτn | j j j | | j j
j | j j
j | j" | | }
| j j |
d k | j j j) | d | | _* d S( Ni i s8 cipher {0} in {1} mode is not supported by this backend.i (+ t _backendt _ciphert _modet
_operationt Nonet _tagt
isinstanceR t BlockCipherAlgorithmt
block_sizet _block_size_bytest _libt EVP_CIPHER_CTX_newt _ffit gct EVP_CIPHER_CTX_freet _cipher_registryt typet KeyErrorR t formatt nameR t UNSUPPORTED_CIPHERt NULLR t ModeWithInitializationVectort initialization_vectort
ModeWithNoncet noncet EVP_CipherInit_ext openssl_assertt EVP_CIPHER_CTX_set_key_lengtht lent keyt GCMt EVP_CIPHER_CTX_ctrlt EVP_CTRL_GCM_SET_IVLENt _DECRYPTt EVP_CTRL_GCM_SET_TAGt tagt EVP_CIPHER_CTX_set_paddingt _ctx( t selft backendt ciphert modet operationt ctxt registryt adaptert
evp_ciphert iv_noncet res( ( sR /usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/openssl/ciphers.pyt __init__ sv
c C` s | j j j d t | | j d } | j j j d } | j j j | j | | | t | } | j j | d k | j j j | | d S( Ns unsigned char[]i s int *i (
R
R t newR' R R t EVP_CipherUpdateR0 R% t buffer( R1 t datat buft outlenR; ( ( sR /usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/openssl/ciphers.pyt updateg s c C` s& t | j t j r% | j d n | j j j d | j } | j j j d } | j j j
| j | | } | d k r<| j j } | r³ t | j t j r³ t
n | j j | d d | j j j | j j j | j j j f k p)| d d | j j j | j j j | j j j f k t d n t | j t j rέ| j | j k rέ| j j j d | j } | j j j | j | j j j | j | } | j j | d k | j j j | | _ n | j j j | j } | j j | d k | j j j | | d S( Nt s unsigned char[]s int *i i sF The length of the provided data is not a multiple of the block length.( R R R R) RC R
R R= R R t EVP_CipherFinal_exR0 t _consume_errorsR R% t ERR_LIB_EVPt EVP_F_EVP_ENCRYPTFINAL_EXt' EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTHt EVP_F_EVP_DECRYPTFINAL_EXt
ValueErrorR
t _ENCRYPTR* t EVP_CTRL_GCM_GET_TAGR? R t EVP_CIPHER_CTX_cleanup( R1 RA RB R; t errorst tag_buf( ( sR /usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/openssl/ciphers.pyt finalizep s@ c C` sb | j j j d } | j j j | j | j j j | | t | } | j j | d k d S( Ns int *i ( R
R R= R R> R0 R R' R% ( R1 R@ RB R; ( ( sR /usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/openssl/ciphers.pyt authenticate_additional_data’ s 'R ( t __name__t
__module__RL R, R< RC RQ RR R t read_only_propertyR. ( ( ( sR /usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/openssl/ciphers.pyR
s S 2 t _AESCTRCipherContextc B` s) e Z d Z d Z d Z d Z RS( s―
This is needed to provide support for AES CTR mode in OpenSSL 1.0.0. It can
be removed when we drop 1.0.0 support (RHEL 6.4 is the only thing that
ships it).
c C` s½ | | _ | j j j d | _ | j j j | j t | j d | j } | j j | d k | j j j d d | _ | j j j d | j
| _ | j j j d d | _ d S( Ns AES_KEY *i i s unsigned char[]i s unsigned char[16]s unsigned int *(
R
R R= t _keyR t AES_set_encrypt_keyR( R' R% t _ecountR# t _noncet _num( R1 R2 R3 R4 R; ( ( sR /usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/openssl/ciphers.pyR< ³ s " c C` si | j j j d t | } | j j j | | t | | j | j | j | j | j j j
| S( Ns unsigned char[]( R
R R= R' R t AES_ctr128_encryptRW RZ RY R[ R? ( R1 R@ RA ( ( sR /usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/openssl/ciphers.pyRC Ώ s
c C` s( d | _ d | _ d | _ d | _ d S( NRD ( R RW RY RZ R[ ( R1 ( ( sR /usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/openssl/ciphers.pyRQ Η s
( RS RT t __doc__R< RC RQ ( ( ( sR /usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/openssl/ciphers.pyRV ¬ s N( t
__future__R R R t cryptographyR t cryptography.exceptionsR R R t cryptography.hazmat.primitivesR t& cryptography.hazmat.primitives.ciphersR t register_interfacet
CipherContextt AEADCipherContextt AEADEncryptionContextt objectR RV ( ( ( sR /usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/openssl/ciphers.pyt <module> s