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Returns the algorithms that are implemented by the library.
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The interface for an algorithm used to sign and verify tokens.
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Performs necessary validation and conversions on the key and returns
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Returns a digital signature for the specified message
using the specified key value.
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Verifies that the specified digital signature is valid
for the specified message and key values.
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Serializes a given RSA key into a JWK
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Deserializes a given RSA key from JWK back into a PublicKey or PrivateKey object
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Placeholder for use when no signing or verification
operations are required.
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Performs signing and verification operations using HMAC
and the specified hash function.
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zHMACAlgorithm.__init__c C s$ t |�}t|�s t|�rtd��|S )NzdThe specified key is an asymmetric key or x509 certificate and should not be used as an HMAC secret.)r r
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Performs signing and verification operations using
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Performs signing and verification operations using
ECDSA and the specified hash function
c C rc rd re rg rC rC rD rh � ri zECAlgorithm.__init__c C sx t |ttf�r |S t |ttf�std��t|�}z|�d�r%t|�}W |S t |�}W |S t
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� ��zECAlgorithm.prepare_keyc C s" |� |t�| �� ��}t||j�S rd )rQ r �ECDSArf r �curve)rK rP rL �der_sigrC rC rD rQ � s zECAlgorithm.signc C sl zt ||j�}W n
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�zECAlgorithm.verifyc C s& zt | t�r t�| �}n
t | t�r| }nt�W n ty" td��w |�d�dkr.td��d|vs6d|vr:td��t|�d��}t|�d��}|�d�}|dkrmt |�t |� kr_d krin td
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�tj|dd�|��� S )Nrp rl �ECzNot an Elliptic curve key�x�y�crvzP-256� z)Coords should be 32 bytes for curve P-256zP-384�0 z)Coords should be 48 bytes for curve P-384zP-521�B z)Coords should be 66 bytes for curve P-521� secp256k1z-Coords should be 32 bytes for curve secp256k1�Invalid curve: �big)� byteorder)r� r� r� r� z!D should be {} bytes for curve {})rq rr rm rs rt ru r rv r �lenr � SECP256R1� SECP384R1� SECP521R1� SECP256K1�EllipticCurvePublicNumbers�int�
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Performs a signature using RSASSA-PSS with MGF1
c C s* |� |tjt�| �� �| jjd�| �� �S )N��mgf� salt_length)rQ r �PSS�MGF1rf � digest_sizerO rC rC rD rQ � s ��zRSAPSSAlgorithm.signc C sH z|� ||tjt�| �� �| jjd�| �� � W dS ty# Y dS w )Nr� TF)rT r r� r� rf r� r rR rC rC rD rT s �� �zRSAPSSAlgorithm.verifyN)rZ r[ r\ r] rQ rT rC rC rC rD r@ � s
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Performs signing and verification operations using EdDSA
This class requires ``cryptography>=2.6`` to be installed.
c K s d S rd rC )rK �kwargsrC rC rD rh rb zOKPAlgorithm.__init__c C s� t |ttf�r6t |t�r|�d�}|�d�}d|v r t|�}nd|v r*t|d d�}n |dd� dkr6t|�}t |tt t
t f�sCt d��|S ) N�utf-8z-----BEGIN PUBLICz-----BEGIN PRIVATEr� r � zssh-zcExpecting a EllipticCurvePrivateKey/EllipticCurvePublicKey. Wrong key provided for EdDSA algorithms)
rq r� rr �encodero r% r$ r& r r r r r )rK rL �str_keyrC rC rD rM s$
��zOKPAlgorithm.prepare_keyc C s$ t |�tur t|d�n|}|�|�S )aR
Sign a message ``msg`` using the EdDSA private key ``key``
:param str|bytes msg: Message to sign
:param Ed25519PrivateKey}Ed448PrivateKey key: A :class:`.Ed25519PrivateKey`
or :class:`.Ed448PrivateKey` iinstance
:return bytes signature: The signature, as bytes
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zOKPAlgorithm.signc C sv z.t |�tur t|d�n|}t |�turt|d�n|}t|ttf�r&|�� }|�||� W dS tjj y: Y dS w )a�
Verify a given ``msg`` against a signature ``sig`` using the EdDSA key ``key``
:param str|bytes sig: EdDSA signature to check ``msg`` against
:param str|bytes msg: Message to sign
:param Ed25519PrivateKey|Ed25519PublicKey|Ed448PrivateKey|Ed448PublicKey key:
A private or public EdDSA key instance
:return bool verified: True if signature is valid, False if not.
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private_bytesr" r! r� r )rL r� r� r� rC rC rD rW V s> ������� zOKPAlgorithm.to_jwkc
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