o _h@s.dZddlZddlZddlTGdddZdS)z$Id$N)*c@seZdZdZddZddZddZdd Zd d Zd d Z ddZ ddZ ddZ ddZ ddZddZddZddZddZd d!Zd"d#Zd$d%Zd&S)'pubkeyzxAn abstract class for a public key object. :undocumented: __getstate__, __setstate__, __eq__, __ne__, validate cCsdS)NselfrrI/var/www/html/env/lib/python3.10/site-packages/Crypto/PublicKey/pubkey.py__init__&szpubkey.__init__cCs.|j}|jD]}||vrt||||<q|S)zTo 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__keydataintrdkeyrrr __getstate__)s  zpubkey.__getstate__cCs*|jD]}||vrt|||j|<qdS)zOn 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 bignumr r rrr __setstate__3s zpubkey.__setstate__cCsNd}t|tr t|}d}t|trt|}|||}|r%ttt|S|S)ajEncrypt 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) isinstancebytes bytes_to_long_encrypttuplemap long_to_bytes)r plaintextK wasString ciphertextrrrencrypt:s    zpubkey.encryptcCsNd}t|ts |f}t|dtrttt|}d}||}|r%t|S|S)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. rr)rrrrr_decryptr)rrrrrrrdecryptOs   zpubkey.decryptcCs@|stdt|trt|}t|trt|}|||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 TypeErrorrrr_sign)rMrrrrsignas   z pubkey.signcCst|tr t|}|||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. )rrr_verifyrr$ signaturerrrverifyrs z pubkey.verifycCstdtdS)Nz0validate() method name is obsolete; use verify())warningswarnDeprecationWarningr'rrrvalidateszpubkey.validatecCHd}t|tr t|}d}t|trt|}|||}|r"t|S|S)a&Blind a message to prevent certain side-channel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. rr)rrr_blindr)rr$Brblindedmessagerrrblinds    z pubkey.blindcCr.)zUnblind a message after cryptographic processing. :Parameter M: The encoded message to unblind. :Type M: byte string or long :Parameter B: Blinding factor. :Type B: byte string or long rr)rrr_unblindr)rr$r0runblindedmessagerrrunblinds    zpubkey.unblindcCdS)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 rrrrrrcan_sign zpubkey.can_signcCr6)aTell 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_encryptr8zpubkey.can_encryptcCr6)aTell 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 rrrrrr can_blindr8zpubkey.can_blindcCr6)z_Tell the maximum number of bits that can be handled by this key. :Return: int rrrrrrsizez pubkey.sizecCr6)zSTell if the key object contains private components. :Return: bool rrrrrrr!r<zpubkey.has_privatecCs|S)zkConstruct a new key carrying only the public information. :Return: A new `pubkey` object. rrrrr publickeyr<zpubkey.publickeycCs||kS)zF__eq__(other): 0, 1 Compare us to other for equality. )rrotherrrr__eq__sz pubkey.__eq__cCs || S)zH__ne__(other): 0, 1 Compare us to other for inequality. )r@r>rrr__ne__s z pubkey.__ne__N)__name__ __module__ __qualname____doc__rrrrr r%r)r-r2r5r7r9r:r;r!r=r@rArrrrr!s(    r) __revision__typesr*Crypto.Util.numberrrrrrs