a ł!fć@sddZddlmZddlmZddlmZddlmZddl m Z Gdd„de ƒZ Gd d „d e ƒZ d S) z2pyCrypto Crypto-related routines for oauth2client.é)ŚSHA256)ŚRSA)Ś PKCS1_v1_5)Ś DerSequence)Ś_helpersc@s,eZdZdZdd„Zdd„Zedd„ƒZdS) ŚPyCryptoVerifierz$Verifies the signature on a message.cCs ||_dS)zƒConstructor. Args: pubkey: OpenSSL.crypto.PKey (or equiv), The public key to verify with. N)Ś_pubkey)ŚselfŚpubkey©r ś]/var/www/html/python-backend/venv/lib/python3.9/site-packages/oauth2client/_pycrypto_crypt.pyŚ__init__szPyCryptoVerifier.__init__cCs(tj|dd}t |j” t |”|”S)a£Verifies a message against a signature. Args: message: string or bytes, The message to verify. If string, will be encoded to bytes as utf-8. signature: string or bytes, The signature on the message. Returns: True if message was signed by the private key associated with the public key that this object was constructed with. śutf-8©Śencoding)rŚ _to_bytesrŚnewrŚverifyr)r ŚmessageŚ signaturer r r r$s   ’zPyCryptoVerifier.verifycCs||rjt |”}| dd” ”}t d |dd…””}tƒ}| |”tƒ}| |d”t  |d”}n t  |”}t |ƒS)a@Construct a Verified instance from a string. Args: key_pem: string, public key in PEM format. is_x509_cert: bool, True if key_pem is an X509 cert, otherwise it is expected to be an RSA key in PEM format. Returns: Verifier instance. ó óéé’’’’ré) rrŚreplaceŚsplitZ_urlsafe_b64decodeŚjoinrŚdecoderŚ importKeyr)Zkey_pemZ is_x509_certZpemLinesZcertDerZcertSeqZtbsSeqr r r r Ś from_string4s    zPyCryptoVerifier.from_stringN)Ś__name__Ś __module__Ś __qualname__Ś__doc__r rŚ staticmethodr r r r r rs  rc@s.eZdZdZdd„Zdd„Zed dd„ƒZd S) ŚPyCryptoSignerz"Signs messages with a private key.cCs ||_dS)ztConstructor. Args: pkey, OpenSSL.crypto.PKey (or equiv), The private key to sign with. N)Ś_key)r Śpkeyr r r r QszPyCryptoSigner.__init__cCs&tj|dd}t |j” t |””S)z±Signs a message. Args: message: string, Message to be signed. Returns: string, The signature of the message for the given key. rr)rrrrr'Śsignr)r rr r r r)Ys zPyCryptoSigner.signŚ notasecretcCs0t t |””}|r t |”}ntdƒ‚t|ƒS)a_Construct a Signer instance from a string. Args: key: string, private key in PEM format. password: string, password for private key file. Unused for PEM files. Returns: Signer instance. Raises: NotImplementedError if the key isn't in PEM format. zpNo key in PEM format was detected. This implementation can only use the PyCrypto library for keys in PEM format.)rZ_parse_pem_keyrrrŚNotImplementedErrorr&)ŚkeyŚpasswordZparsed_pem_keyr(r r r r es ’zPyCryptoSigner.from_stringN)r*)r!r"r#r$r r)r%r r r r r r&Ns  r&N)r$Z Crypto.HashrZCrypto.PublicKeyrZCrypto.SignaturerZCrypto.Util.asn1rZ oauth2clientrŚobjectrr&r r r r Śs     6