Eh41dZddlZejddk(rejddk(rddlddldZdZdZdZdZ d Z d Z dd Z Gd d Z y)z4Module with definitions common to all block ciphers.N)*cv|j|}t||kDr|rtd|z||}|xs|S)zFFind a parameter in tuple and dictionary arguments a function receivesz!Parameter '%s' is specified twice)getlen ValueError)nameindexargskwargsdefaultparams X/var/www/html/bid_assistant/venv/lib/python3.12/site-packages/Crypto/Cipher/blockalgo.py _getParameterr|sC JJt E 4y @4GH HU   Gc"eZdZdZdZdZdZy) BlockAlgoz)Class modelling an abstract block cipher.c(tdd||t|_|j|_|jtk7r7|j |g|i||_|j j|_yd|_d|_ tdd|||_|js td|j |ttd|jz|jd z }t|j|jk(r]|j|j|jd dztd|jd z zzd|jd z|_nt|j|jd zk(r|j|_|j!|jtd|jd z zzd|jd z|_|jd d|jd d k7r td|jdd |_n'td|j|jd zfz|j |t|j|j d|jd z |_y)Nmoder)rFivrzMODE_OPENPGP requires an IV) segment_sizerz%Failed integrity check for OPENPGP IVz4Length of IV must be %d or %d bytes for MODE_OPENPGP)rMODE_ECBr block_size MODE_OPENPGPnew_cipherIV_done_first_block_done_last_blockrMODE_CFBbr encrypt _encrypted_IVdecrypt)selffactorykeyrr IV_ciphers r__init__zBlockAlgo.__init__sD!&!T68L !,, 99 $&7;;s?? CfIdoo-!%!2$4I 477|t.%.%6%6GGdggbcl*fItq012&)tq(&*"TWW!22%)WW"#++DGGfItq01-2(tq(*7723<4772b>1$%LMM''#2, !W(9:";<<#;;sH""DOO#3#45!__Q.'0DLrc|jtk(r|jt||jzz |jz}|dkDrb|jrt d|jd|_|t d|zz}|jj|dt|}n|jj|}|js|j|z}d|_ |S|jj|S)aXEncrypt data with the key and the parameters set at initialization. The cipher object is stateful; encryption of a long block of data can be broken up in two or more calls to `encrypt()`. That is, the statement: >>> c.encrypt(a) + c.encrypt(b) is always equivalent to: >>> c.encrypt(a+b) That also means that you cannot reuse an object for encrypting or decrypting other data with the same key. This function does not perform any padding. - For `MODE_ECB`, `MODE_CBC`, and `MODE_OFB`, *plaintext* length (in bytes) must be a multiple of *block_size*. - For `MODE_CFB`, *plaintext* length (in bytes) must be a multiple of *segment_size*/8. - For `MODE_CTR`, *plaintext* can be of any length. - For `MODE_OPENPGP`, *plaintext* must be a multiple of *block_size*, unless it is the last chunk of the message. :Parameters: plaintext : byte string The piece of data to encrypt. :Return: the encrypted data, as a byte string. It is as long as *plaintext* with one exception: when encrypting the first message chunk with `MODE_OPENPGP`, the encypted IV is prepended to the returned ciphertext. rFOnly the last chunk is allowed to have length not multiple of %d bytesTrN) rr$r#r r)rr+r&r,r(r-)r/ plaintextpadding_lengthpaddedress rr,zBlockAlgo.encryptsN 99 $"ooI0PPTXTcTccNa(($%m))(,%"QvY~%==ll**62?C NCll**95))((3.)-&J||##I..rc|jtk(r|jt||jzz |jz}|dkDrc|jrt d|jd|_|t d|zz}|jj|dt|}|S|jj|}|S|jj|S)aDecrypt data with the key and the parameters set at initialization. The cipher object is stateful; decryption of a long block of data can be broken up in two or more calls to `decrypt()`. That is, the statement: >>> c.decrypt(a) + c.decrypt(b) is always equivalent to: >>> c.decrypt(a+b) That also means that you cannot reuse an object for encrypting or decrypting other data with the same key. This function does not perform any padding. - For `MODE_ECB`, `MODE_CBC`, and `MODE_OFB`, *ciphertext* length (in bytes) must be a multiple of *block_size*. - For `MODE_CFB`, *ciphertext* length (in bytes) must be a multiple of *segment_size*/8. - For `MODE_CTR`, *ciphertext* can be of any length. - For `MODE_OPENPGP`, *plaintext* must be a multiple of *block_size*, unless it is the last chunk of the message. :Parameters: ciphertext : byte string The piece of data to decrypt. :Return: the decrypted data (byte string, as long as *ciphertext*). rr5TrN) rr$r#r r)rr+r&r.)r/ ciphertextr7r8r9s rr.zBlockAlgo.decryptsD 99 $"ooJ$//0QQUYUdUddNa(($%m))(,%#ai&>>ll**623CC ODJll**:6J||##J//rN)__name__ __module__ __qualname____doc__r3r,r.rrrrs310f9/v10rr)N)r?sys version_infoCrypto.Util.py21compatCrypto.Util.py3compatr"MODE_CBCr*MODE_PGPMODE_OFBMODE_CTRr$rrr@rrrIsz,; A! 0 0 3q 8(#  $   0  b0b0r