USfkBdZddlmZddlZddlmZddlmZddlmZddl m Z ddl m Z dd l m Z dd l mZddlZdd lmZdd lmZd Zej*Ze j.ZGddej2ZGddej6ej8Zy)zIECDSA (ES256) verifier and signer that use the ``cryptography`` library. )utilsN)backends)hashes) serialization)ec)padding)decode_dss_signature)encode_dss_signature)_helpers)bases-----BEGIN CERTIFICATE-----cjeZdZdZdZej ejdZ e dZ y) ES256VerifierzVerifies ECDSA cryptographic signatures using public keys. Args: public_key ( cryptography.hazmat.primitives.asymmetric.ec.ECDSAPublicKey): The public key used to verify signatures. c||_yN)_pubkey)self public_keys VC:\Users\user\Documents\project_loop\venv\Lib\site-packages\google/auth/crypt/es256.py__init__zES256Verifier.__init__/s ! ctj|}t|dk7rytjrtj |dddnt j|ddd}tjrtj |dddnt j|ddd}t||}tj|} |jj||tjtjy#tt j"j$f$rYywxYw)N@F big byteorderT)r to_byteslen is_python_3int from_bytesrint_from_bytesr rverifyrECDSArSHA256 ValueError cryptography exceptionsInvalidSignature)rmessage signature sig_bytesrsasn1_sigs rr#zES256Verifier.verify2s%%i0 y>R ##% NN9Sb>UN ;%%inF ##% NN9RS>UN ;%%inF (1-##G,  LL  '288FMMO3L ML33DDE  sAD#E?Ectj|}t|vr5tjj |t }|j}ntj|t }||S)ayConstruct an Verifier instance from a public key or public certificate string. Args: public_key (Union[str, bytes]): The public key in PEM format or the x509 public key certificate. Returns: Verifier: The constructed verifier. Raises: ValueError: If the public key can't be parsed. ) r r_CERTIFICATE_MARKERr'x509load_pem_x509_certificate_BACKENDrrload_pem_public_key)clsrpublic_key_datacertpubkeys r from_stringzES256Verifier.from_stringKsc#++J7 / 1$$>>D__&F#66QF6{rN) __name__ __module__ __qualname____doc__rr copy_docstringr Verifierr# classmethodr:rrrr&sE"XT]]+,0rrceZdZdZd dZeejejdZ ejejdZ e d dZ dZdZy) ES256SigneraSigns messages with an ECDSA private key. Args: private_key ( cryptography.hazmat.primitives.asymmetric.ec.ECDSAPrivateKey): The private key to sign with. key_id (str): Optional key ID used to identify this private key. This can be useful to associate the private key with its associated public key or certificate. Nc ||_||_yr)_key_key_id)r private_keykey_ids rrzES256Signer.__init__ts  rc|jSr)rG)rs rrIzES256Signer.key_idxs||rctj|}|jj|t j t j}t|\}}tjr'|jdd|jddzStj|dtj|dzS)Nrrr) r rrFsignrr$rr%r rr int_to_bytes)rr*asn1_signaturer-r.s rrLzES256Signer.sign}s##G,&--/1JK&n5A##%ZZeZ ,qzz"z/N N $$Q+e.@.@B.GG rcxtj|}tj|dt}|||S)alConstruct a RSASigner from a private key in PEM format. Args: key (Union[bytes, str]): Private key in PEM format. key_id (str): An optional key id used to identify the private key. Returns: google.auth.crypt._cryptography_rsa.RSASigner: The constructed signer. Raises: ValueError: If ``key`` is not ``bytes`` or ``str`` (unicode). UnicodeDecodeError: If ``key`` is ``bytes`` but cannot be decoded into a UTF-8 ``str``. ValueError: If ``cryptography`` "Could not deserialize key data." N)passwordbackend)rI)r rrload_pem_private_keyr4)r6keyrIrHs rr:zES256Signer.from_strings:$$#88 $ ;v..rc|jj}|jjtj j tjjt j|d<|S)z1Pickle helper that serializes the _key attribute.)encodingformatencryption_algorithmrF) __dict__copyrF private_bytesrEncodingPEM PrivateFormatPKCS8 NoEncryptionrstates r __getstate__zES256Signer.__getstate__sb ""$ //"++// ..44!.!;!;!=0 f  rcrtj|dd|d<|jj|y)z3Pickle helper that deserializes the _key attribute.rFN)rrRrXupdater`s r __setstate__zES256Signer.__setstate__s.%::5=$Of  U#rr)r;r<r=r>rpropertyr r?r SignerrIrLrAr:rbrerBrrrDrDhs| XT[[)*XT[[)  *  //.$rrD)r>r'rcryptography.exceptionscryptography.hazmatrcryptography.hazmat.primitivesrr)cryptography.hazmat.primitives.asymmetricrr/cryptography.hazmat.primitives.asymmetric.utilsr r cryptography.x509 google.authr google.auth.cryptr r1default_backendr4PKCS1v15_PADDINGr@rrgFromServiceAccountMixinrDrBrrrts(188=PP "5 #8 # # % 7   ?DMM?DG$$++t;;G$r