Current File : //opt/alt/python37/lib64/python3.7/site-packages/Crypto/PublicKey/__pycache__/pubkey.cpython-37.pyc
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dd� Zdd� Zdd� Zd d � Zd d � Zd d!� Zd"d#� Zd$d%� Zd&S )'�pubkeyzxAn abstract class for a public key object.
:undocumented: __getstate__, __setstate__, __eq__, __ne__, validate
c C s d S )N� )�selfr r �J/opt/alt/python37/lib64/python3.7/site-packages/Crypto/PublicKey/pubkey.py�__init__& s zpubkey.__init__c C s2 | j }x&| jD ] }||krt|| �||< qW |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�keyr r r � __getstate__) s
zpubkey.__getstate__c C s. x(| j D ] }||krt|| �| j|< qW dS )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 r r r r r � __setstate__3 s zpubkey.__setstate__c C sR d}t |t�rt|�}d}t |t�r,t|�}| �||�}|rJttt|��S |S dS )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�
ciphertextr r r �encrypt: s
zpubkey.encryptc C sR d}t |t�s|f}t |d t�r4ttt|��}d}| �|�}|rJt|�S |S dS )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 r N)r r r r r Z_decryptr )r r r r r r r �decryptO s
zpubkey.decryptc C s@ | � � std��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� TypeErrorr r r Z_sign)r �Mr r r r �signa s
z pubkey.signc C s t |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.
)r r r Z_verify)r r � signaturer r r �verifyr s
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pubkey.verifyc C s t �dt� d S )Nz0validate() method name is obsolete; use verify())�warnings�warn�DeprecationWarning)r r r r r r �validate� s zpubkey.validatec C sL d}t |t�rt|�}d}t |t�r,t|�}| �||�}|rDt|�S |S dS )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 r N)r r r Z_blindr )r r �Br Zblindedmessager r r �blind� s
z pubkey.blindc C sL d}t |t�rt|�}d}t |t�r,t|�}| �||�}|rDt|�S |S dS )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 r N)r r r Z_unblindr )r r r& r Zunblindedmessager r r �unblind� s
zpubkey.unblindc C s dS )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
r r )r r r r �can_sign� s zpubkey.can_signc C s dS )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
r r )r r r r � can_encrypt� s zpubkey.can_encryptc C s dS )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 r )r r r r � can_blind� s zpubkey.can_blindc C s dS )z_Tell the maximum number of bits that can be handled by this key.
:Return: int
r r )r r r r �size� s z pubkey.sizec C s dS )zSTell if the key object contains private components.
:Return: bool
r r )r r r r r � s zpubkey.has_privatec C s | S )zkConstruct a new key carrying only the public information.
:Return: A new `pubkey` object.
r )r r r r � publickey� s zpubkey.publickeyc C s | � � |� � kS )zF__eq__(other): 0, 1
Compare us to other for equality.
)r
)r �otherr r r �__eq__� s z
pubkey.__eq__c C s | � |� S )zH__ne__(other): 0, 1
Compare us to other for inequality.
)r/ )r r. r r r �__ne__� s z
pubkey.__ne__N)�__name__�
__module__� __qualname__�__doc__r r
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r )� __revision__�typesr" ZCrypto.Util.numberr r r r r �<module> s
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