o tBhf@sdZddlmZddlZddlmZddlmZddlmZddl m Z ddl m Z dd l m Z dd l mZddlZdd lmZdd lmZd ZeZe ZGdddejZGdddejejZdS)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-----c@s8eZdZdZddZeejddZ e ddZ dS) ES256VerifierzVerifies ECDSA cryptographic signatures using public keys. Args: public_key ( cryptography.hazmat.primitives.asymmetric.ec.ECDSAPublicKey): The public key used to verify signatures. cCs ||_dSN)_pubkey)self public_keyrn/var/www/html/riverr-enterprise-integrations-main/venv/lib/python3.10/site-packages/google/auth/crypt/es256.py__init__/s zES256Verifier.__init__c Cst|}t|dkr dStj|dddd}tj|dddd}t||}t|}z|j||t t WdSt t jjfyKYdSw)N@F big) byteorderT)r to_byteslenrint_from_bytesr rverifyrECDSArSHA256 ValueError cryptography exceptionsInvalidSignature)rmessage signature sig_bytesrsasn1_sigrrrr2s    zES256Verifier.verifycCsDt|}t|vrtj|t}|}||St |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_MARKERrx509load_pem_x509_certificate_BACKENDrrload_pem_public_key)clsrpublic_key_datacertpubkeyrrr from_stringCs  zES256Verifier.from_stringN) __name__ __module__ __qualname____doc__rr copy_docstringr Verifierr classmethodr1rrrrr &s  r c@sTeZdZdZd ddZeeej ddZ eej ddZ e d d d Z dS) 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. NcCs||_||_dSr )_key_key_id)r private_keykey_idrrrrls zES256Signer.__init__cCs|jSr )r;)rrrrr=pszES256Signer.key_idcCsFt|}|j|tt}t|\}}t |dt |dS)Nr) r rr:signrrrrrr int_to_bytes)rr"asn1_signaturer%r&rrrr>us  zES256Signer.signcCs&t|}tj|dtd}|||dS)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)r=)r rrload_pem_private_keyr+)r-keyr=r<rrrr1~s  zES256Signer.from_stringr )r2r3r4r5rpropertyr r6r Signerr=r>r8r1rrrrr9`s     r9)r5rrcryptography.exceptionscryptography.hazmatrcryptography.hazmat.primitivesrr)cryptography.hazmat.primitives.asymmetricrr/cryptography.hazmat.primitives.asymmetric.utilsrr cryptography.x509 google.authr google.auth.cryptr r(default_backendr+PKCS1v15_PADDINGr7r rFFromServiceAccountMixinr9rrrrs$          :