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JWKeyNotFound)�JWSEHeaderParameter�JWSEHeaderRegistry)�base64url_decode�base64url_encode)� json_decode� json_encode)�JWA)�JWK�JWKSetZ AlgorithmFTNz JWK Set URLz JSON Web KeyzKey IDz X.509 URLzX.509 Certificate Chainz"X.509 Certificate SHA-1 Thumbprintz$X.509 Certificate SHA-256 Thumbprint�Typez Content TypeZCriticalzBase64url-Encode Payload) �algZjkuZjwk�kidZx5uZx5cZx5tzx5t#S256�typZcty�crit�b64)ZHS256ZHS384ZHS512ZRS256ZRS384ZRS512ZES256ZES384ZES512ZPS256ZPS384ZPS512ZEdDSAZES256Kc s" e Zd ZdZd� fdd� Z� ZS )�InvalidJWSSignaturez_Invalid JWS Signature.
This exception is raised when a signature cannot be validated.
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This exception is raised when the JWS Object is invalid and/or
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This exception is raised when a requested operation cannot
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� Zd d � ZdS )�JWSCorez�The inner JWS Core object.
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:param alg: The algorithm used to produce the signature.
See RFC 7518
:param key: A (:class:`jwcrypto.jwk.JWK`) verification or
a (:class:`jwcrypto.jwk.JWKSet`) that contains a key indexed by the
'kid' header. A JWKSet is allowed only for verification operations.
:param header: A JSON string representing the protected header.
:param payload(bytes): An arbitrary value
:param algs: An optional list of allowed algorithms
:raises ValueError: if the key is not a (:class:`jwcrypto.jwk.JWK`)
:raises InvalidJWAAlgorithm: if the algorithm is not valid, is
unknown or otherwise not yet implemented.
:raises InvalidJWSOperation: if the algorithm is not allowed.
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d}~0 0 dS )z�Verifies a signature
:raises InvalidJWSSignature: if the verification fails.
:return: Returns True or an Exception
:rtype: `bool`
r= r* zVerification failedNT) r@ r3 r2 r5 r- �verifyr. � Exceptionr )r r> rB �er r r rC � s � zJWSCore.verify)N) r" r# r$ r% r r, r4 rA rC r r r r r) X s
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This object represent a JWS token.
Nc C s: i | _ || j d< d| _d| _tt�| _|r6| j�|� dS )z�Creates a JWS object.
:param payload(bytes): An arbitrary value (optional).
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c C s | j �dd�S )N�validF)rG r: rM r r r �is_valid� s z JWS.is_validc G s d }g }|d ur|d|v rZ|d }|D ]4}|| j vr@td| ��q$| j | js$td| ��q$|}d|v r|t|d t�s|td��|D ]l}|d u r�q�|d u r�i }t|�� �D ]:}|| j v r�| j | jr�td| ��||v r�td| ��q�|�|� q�|D ]}||vr�td| ��q�|S ) Nr z Unknown critical header: "%s"z!Unsupported critical header: "%s"r z b64 header must be a booleanz"%s" must be protectedzDuplicate header: "%s"z Missing critical header "%s") rK r' Z supportedr/ �boolrO �keysZ mustprotectrL )r r3 Zheadersr1 r �kZhn�hr r r �_merge_check_headers� sD
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Verifies a JWS token.
:param key: A (:class:`jwcrypto.jwk.JWK`) verification or
a (:class:`jwcrypto.jwk.JWKSet`) that contains a key indexed by the
'kid' header.
:param alg: The signing algorithm (optional). Usually the algorithm
is known as it is provided with the JOSE Headers of the token.
:param detached_payload: A detached payload to verify the signature
against. Only valid for tokens that are not carrying a payload.
:raises InvalidJWSSignature: if the verification fails.
:raises InvalidJWSOperation: if a detached_payload is provided but
an object payload exists
:raises JWKeyNotFound: if key is a JWKSet and the key is not found.
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0 0 |�r�| �||� d S )aw Deserialize a JWS token.
NOTE: Destroys any current status and tries to import the raw
JWS provided.
If a key is provided a verification step will be attempted after
the object is successfully deserialized.
:param raw_jws: a 'raw' JWS token (JSON Encoded or Compact
notation) string.
:param key: A (:class:`jwcrypto.jwk.JWK`) verification or
a (:class:`jwcrypto.jwk.JWKSet`) that contains a key indexed by the
'kid' header (optional).
:param alg: The signing algorithm (optional). Usually the algorithm
is known as it is provided with the JOSE Headers of the token.
:raises InvalidJWSObject: if the raw object is an invalid JWS token.
:raises InvalidJWSSignature: if the verification fails.
:raises JWKeyNotFound: if key is a JWKSet and the key is not found.
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< d| jv �r�| j�d�| d< d| jv �r�| j�d�| d< | jd �| � | jd �| � n| j�| � || jd< dS )a Adds a new signature to the object.
:param key: A (:class:`jwcrypto.jwk.JWK`) key of appropriate for
the "alg" provided.
:param alg: An optional algorithm name. If already provided as an
element of the protected or unprotected header it can be safely
omitted.
:param protected: The Protected Header (optional)
:param header: The Unprotected Header (optional)
:raises InvalidJWSObject: if invalid headers are provided.
:raises ValueError: if the key is not a (:class:`jwcrypto.jwk.JWK`)
:raises ValueError: if the algorithm is missing or is not provided
by one of the headers.
:raises InvalidJWAAlgorithm: if the algorithm is not valid, is
unknown or otherwise not yet implemented.
Tr r z"b64 header must always be criticalz Mixed b64 headers on signaturesNr zF"alg" value mismatch, specified "alg" does not match JOSE header valuez"alg" not specifiedr5 r> )r> rQ r3 r1 rd rQ )r/ r0 r r rO rT r: r' rG rW r? r) rN rA r rZ �poprL )
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zJWS.add_signatureFc C sX |�rd| j v rtd��d| j vr*td��| j �dd�s@td��d| j v rxt| j d �}d |vrhtd
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d��r<t|�|d < n||d < d|v �r�|�dd��sdtd��t|d �|d< d|v �r�t|d �|d< d|v �rL|d |d< n�d|v �rDg |d< |d D ]f}|�dd��sq�dt|d �i}d|v �r t|d �|d< d|v �r|d |d< |d �
|� �q�t |d �dk�rLtd��ntd��t |�S dS )a Serializes the object into a JWS token.
:param compact(boolean): if True generates the compact
representation, otherwise generates a standard JSON format.
:raises InvalidJWSOperation: if the object cannot serialized
with the compact representation and `compact` is True.
:raises InvalidJWSSignature: if no signature has been added
to the object, or no valid signature can be found.
:return: A json formatted string or a compact representation string
:rtype: `str`
rd z3Can't use compact encoding with multiple signaturesr> zNo available signaturerQ FzNo valid signature foundr3 r z5Compact encoding must carry 'alg' in protected headerz3Can't use compact encoding without protected headerr5 r Tr* rj zKCan't use compact encoding with unencoded payload that uses the . characterr+ r1 r N)
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JWS.serializec C s | j std��| j�d�S )NzPayload not verifiedr5 )rR r( rG r: rM r r r r5 � s z JWS.payloadc C s | j �dd � d S )Nr5 )rG rr rM r r r �detach_payload� s zJWS.detach_payloadc C s� | j }d|v r<d|v r$t|d �}nd }| �||�di ��S d| j v r�g }|d D ]@}i }d|v rpt|d �}nd }| �||�di ��}|�|� qR|S td��d S )Nr> r3 r1 rd z JOSE Header(s) not available)rG r rW r: rZ r( )r ra r^ Zjhlre Zjhr r r r[ � s"
zJWS.jose_headerc C s | � }|� |� |S )a Creates a JWS object from a serialized JWS token.
:param token: A string with the json or compat representation
of the token.
:raises InvalidJWSObject: if the raw object is an invalid JWS token.
:return: A JWS token
:rtype: JWS
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zJWS.from_jose_tokenc C sD t |t�sdS z| �� |�� kW S ty> | j|jk Y S 0 d S )NF)r/ rF rw rD rG )r �otherr r r �__eq__� s
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