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asymmetric.cpython-39.pyc
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A passphrase of None will result in no encryption. A blank string will result in a ValueError to help ensure that the lack of passphrase is intentional. :param encoding: A unicode string of "pem" or "der" :param target_ms: Use PBKDF2 with the number of iterations that takes about this many milliseconds on the current machine. :raises: ValueError - when a blank string is provided for the passphrase :return: A byte string of the encoded and encrypted public key r4 r5 r6 N�M passphrase must be a unicode string, not %s � �x passphrase may not be a blank string - pass None to disable encryption z� private_key must be an instance of oscrypto.asymmetric.PrivateKey or asn1crypto.keys.PrivateKeyInfo, not %s Z aes256_cbc� �sha256T)� target_ms�quieti' �utf-8Zpbes2r Z specified)�name�value)� algorithm� parameters)ZsaltZiteration_countZprf)Zkey_derivation_funcZencryption_scheme)Zencryption_algorithmZencrypted_dataz PRIVATE KEYzENCRYPTED PRIVATE KEY)r7 r8 r r9 r: r r; r r$ r rA r< r r �encoder r r r r r )� private_key� passphraser= rK rB r> �cipher� key_lengthZkdf_hmacZkdf_saltZ iterations�passphrase_bytes�key�ivZ ciphertext� object_typer? r? r@ r2 � sz � �� � �������� r2 c C sl |dur8t |t�s$ttdt|����|dkr8ttd���t | t�}t | t�sb|sbttdt| ����|rl| j} t | �� � }d}|du�r*t d�}t � }d|d< d t �|��d � |d < d}|�d �}t�||d d� ��� }|t|�k�r|t�|| |d d� ��� 7 }q�|d |� }t|||�\}}| jdk�r<d} n"| jdk�rNd} n| jdk�r^d} t| ||d�S )a Serializes a private key object into a byte string of the PEM formats used by OpenSSL. The format chosen will depend on the type of private key - RSA, DSA or EC. Do not use this method unless you really must interact with a system that does not support PKCS#8 private keys. The encryption provided by PKCS#8 is far superior to the OpenSSL formats. This is due to the fact that the OpenSSL formats don't stretch the passphrase, making it very easy to brute-force. :param private_key: An oscrypto.asymmetric.PrivateKey or asn1crypto.keys.PrivateKeyInfo object :param passphrase: A unicode string of the passphrase to encrypt the private key with. A passphrase of None will result in no encryption. A blank string will result in a ValueError to help ensure that the lack of passphrase is intentional. :raises: ValueError - when a blank string is provided for the passphrase :return: A byte string of the encoded and encrypted public key NrF rG rH z� private_key must be an instance of oscrypto.asymmetric.PrivateKey or asn1crypto.keys.PrivateKeyInfo, not %s � z 4,ENCRYPTEDz Proc-TypezAES-128-CBC,%s�asciizDEK-InforM r � ZeczEC PRIVATE KEY�rsazRSA PRIVATE KEYZdsazDSA PRIVATE KEY)�headers)r: r r; r r r8 r$ r rA r r< r r �binascii�hexlify�decoderR �hashlib�md5�digest�lenr rP r ) rS rT rB r> r_ rY rV rW rX rZ r? r? r@ r1 u sN �� � $ r1 )r4 )r4 )r4 )r4 rE )@� __future__r r r r rc r` rG r Z_asn1r r rD r r r r r r r Z _asymmetricr �_errorsr �_typesr r Zkdfr r Z symmetricr �utilr Z_backendZ_mac.asymmetricr r r r r r r r! r" r# r$ r% r& r' r( r) r* r+ r, r- Z_win.asymmetricZ_openssl.asymmetric�__all__r0 r3 r/ r2 r1 r? r? r? r@ �<module> s, , ^^\ % ) ) v