U

�_��@s.dZd
dl
Z
d
dlZd
dlTGdd�d�ZdS)z$Id$�N)
�
*c@s�eZ
dZd
Zdd�Zdd�Zdd�Zdd	�Zd
d�Zdd
�Z	dd�Z
dd�Zdd�Zdd�Z
dd�Zdd�Zdd�Zdd�Zdd�Zd d!�Zd"d#�Zd$d%�Zd&S)'�pubkeyzxAn abstract class for a public key object.

    :undocumented: __getstate__, __setstate__, __eq__, __ne__, validate
    c


CsdS)
N��
�selfrr�J/opt/alt/python38/lib64/python3.8/site-packages/Crypto/PublicKey/pubkey.py�__init__&s
zpubkey.__init__c
Cs.|j}
|j
D]}||
krt|
|�
|
|<q|
S)
z�To keep key objects platform-independent, the key data is
        converted to standard Python long integers before being
        written out.  It will then be reconverted as necessary on
        restoration.)�__dict__�keydata�int�r�
d�keyrrr�__getstate__)s




zpubkey.__getstate__cCs*|jD]}||
krt
|
|�
|j|<qd
S)z�On unpickling a key object, the key data is converted to the big
number representation being used, whether that is Python long
integers, MPZ objects, or whatever.N)r
Zbignumr	rrrr�__setstate__3s

zpubkey.__setstate__cCsRd
}t|
t
�rt|
�
}
d}t|t
�r,t|�
}|�|
|�}|rJttt|��
S|SdS)aj
Encrypt a piece of data.

        :Parameter plaintext: The piece of data to encrypt.
        :Type plaintext: byte string or long

        :Parameter K: A random parameter required by some algorithms
        :Type K: byte string or long

        :Return: A tuple with two items. Each item is of the same type as the
         plaintext (string or long).
        r
�
N)�
isinstance�bytes�
bytes_to_longZ_encrypt�tuple�map�
long_to_bytes)r�	plaintext�
K�	wasString�
ciphertextrrr�encrypt:s








zpubkey.encryptcCsRd
}t|
t
�s|
f
}
t|
d
t�r4t
tt|
��
}
d}|�|
�
}|rJt|�
S|SdS)a.
Decrypt a piece of data. 

        :Parameter ciphertext: The piece of data to decrypt.
        :Type ciphertext: byte string, long or a 2-item tuple as returned by `encrypt`

        :Return: A byte string if ciphertext was a byte string or a tuple
         of byte strings. A long otherwise.
        r
rN)rrrrrZ_decryptr)rrrrrrr�decryptOs	








zpubkey.decryptcCs@|��st
d
�
�
t|
t�r"t|
�
}
t|t�r4t|�
}|�|
|�S)a

Sign a piece of data.

        :Parameter M: The piece of data to encrypt.
        :Type M: byte string or long

        :Parameter K: A random parameter required by some algorithms
        :Type K: byte string or long

        :Return: A tuple with two items.
        z(Private key not available in this object)�has_private�	TypeErrorrrrZ_sign)r�
Mrrrr�signas





zpubkey.signcCst|
t
�rt|
�
}
|�|
|�S)
a>
Verify the validity of a signature.

        :Parameter M: The expected message.
        :Type M: byte string or long

        :Parameter signature: The signature to verify.
        :Type signature: tuple with two items, as return by `sign`

        :Return: True if the signature is correct, False otherwise.
        )rrrZ_verify�rr Z	signaturerrr�verifyrs

z
pubkey.verifycCst�
d
t�
dS)Nz0validate() method name is obsolete; use verify())�warnings�warn�DeprecationWarningr"rrr�validate�s

�zpubkey.validatecCsLd
}t|
t
�rt|
�
}
d}t|t
�r,t|�
}|�|
|�}|rDt|�
S|SdS)a&
Blind a message to prevent certain side-channel attacks.
       
        :Parameter M: The message to blind.
        :Type M: byte string or long

        :Parameter B: Blinding factor.
        :Type B: byte string or long

        :Return: A byte string if M was so. A long otherwise.
        r
rN)rrrZ_blindr)rr �
BrZblindedmessagerrr�blind�s







zpubkey.blindcCsLd
}t|
t
�rt|
�
}
d}t|t
�r,t|�
}|�|
|�}|rDt|�
S|SdS)z�Unblind a message after cryptographic processing.
        
        :Parameter M: The encoded message to unblind.
        :Type M: byte string or long

        :Parameter B: Blinding factor.
        :Type B: byte string or long
        r
rN)rrrZ_unblindr)rr r(rZunblindedmessagerrr�unblind�s	







zpubkey.unblindc


Csd
S)a(
Tell if the algorithm can deal with cryptographic signatures.

        This property concerns the *algorithm*, not the key itself.
        It may happen that this particular key object hasn't got
        the private information required to generate a signature.

        :Return: boolean
        rrrrrr�can_sign�s	zpubkey.can_signc


Csd
S)a
Tell if the algorithm can deal with data encryption.
       
        This property concerns the *algorithm*, not the key itself.
        It may happen that this particular key object hasn't got
        the private information required to decrypt data.

        :Return: boolean
        rrrrrr�can_encrypt�s	zpubkey.can_encryptc


Csd
S)a
Tell if the algorithm can deal with data blinding.
       
        This property concerns the *algorithm*, not the key itself.
        It may happen that this particular key object hasn't got
        the private information required carry out blinding.

        :Return: boolean
        r
rrrrr�	can_blind�s	zpubkey.can_blindc


Csd
S)z_Tell the maximum number of bits that can be handled by this key.

        :Return: int
        r
rrrrr�size�szpubkey.sizec


Csd
S)zSTell if the key object contains private components.

        :Return: bool
        r
rrrrrr�szpubkey.has_privatec


Cs|S)
zkConstruct a new key carrying only the public information.

        :Return: A new `pubkey` object.
        rrrrr�	publickey�szpubkey.publickeycCs|��|
��kS)
zF__eq__(other): 0, 1
        Compare us to other for equality.
        )
r�r�otherrrr�__eq__�sz
pubkey.__eq__cCs|�|
�
S)
zH__ne__(other): 0, 1
        Compare us to other for inequality.
        )
r2r0rrr�__ne__�sz
pubkey.__ne__N)�__name__�
__module__�__qualname__�__doc__rrrrrr!r#r'r)r*r+r,r-r.rr/r2r3rrrrr!s&

r)�__revision__�typesr$ZCrypto.Util.numberrrrrr�<module>s