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Filename :
signing.cpython-310.pyc
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o ��a� � @ s� d dl mZ d dlZd dlmZ d dlmZ d dlmZ m Z d dl m Z mZ G dd� de�ZG d d � d eje �ZG d d � d eje �ZdS ) � )�OptionalN)�encoding)� exceptions)� PrivateKey� PublicKey)� StringFixer�randomc @ sd e Zd ZU dZeed< eed< ededededd fdd ��Zedefd d ��Z edefd d ��Z dS )� SignedMessagezc A bytes subclass that holds a messaged that has been signed by a :class:`SigningKey`. � _signature�_message� signature�message�combined�returnc C s | |�}||_ ||_|S �N)r r )�clsr r r �obj� r �./usr/lib/python3/dist-packages/nacl/signing.py� _from_parts# s zSignedMessage._from_partsc C � | j S )zL The signature contained within the :class:`SignedMessage`. )r ��selfr r r r , � zSignedMessage.signaturec C r )zJ The message contained within the :class:`SignedMessage`. )r r r r r r 3 r zSignedMessage.messageN) �__name__� __module__� __qualname__�__doc__�bytes�__annotations__� classmethodr �propertyr r r r r r r s$ ��� �r c @ s� e Zd ZdZejfdedejfdd�Zdefdd�Z de fd d �Z d e de fd d �Zd e de fdd�Zdejfdedee dejdefdd�Zdefdd�ZdS )� VerifyKeyz� The public key counterpart to an Ed25519 SigningKey for producing digital signatures. :param key: [:class:`bytes`] Serialized Ed25519 public key :param encoder: A class that is able to decode the `key` �key�encoderc C sJ |� |�}t|t�st�d��t|�tjjkr t� dtjj ��|| _ d S )Nz'VerifyKey must be created from 32 bytesz%The key must be exactly %s bytes long) �decode� isinstancer �exc� TypeError�len�nacl�bindingsZcrypto_sign_PUBLICKEYBYTES� ValueError�_key)r r# r$ r r r �__init__D s �� zVerifyKey.__init__r c C r r )r- r r r r � __bytes__T � zVerifyKey.__bytes__c C � t t| ��S r ��hashr r r r r �__hash__W � zVerifyKey.__hash__�otherc C �& t || j�sdS tj�t| �t|��S �NF�r& � __class__r* r+ Z sodium_memcmpr �r r6 r r r �__eq__Z � zVerifyKey.__eq__c C � | |k S r r r; r r r �__ne___ � zVerifyKey.__ne__N�smessager c C sp |dur+t |t�st�dtjj ��t|�tjjkr#t�dtjj ��||� |� }n|� |�}tj� || j �S )aS Verifies the signature of a signed message, returning the message if it has not been tampered with else raising :class:`~nacl.signing.BadSignatureError`. :param smessage: [:class:`bytes`] Either the original messaged or a signature and message concated together. :param signature: [:class:`bytes`] If an unsigned message is given for smessage then the detached signature must be provided. :param encoder: A class that is able to decode the secret message and signature. :rtype: :class:`bytes` Nz4Verification signature must be created from %d bytesz+The signature must be exactly %d bytes long) r& r r' r( r* r+ �crypto_sign_BYTESr) r, r% Zcrypto_sign_openr- )r rA r r$ r r r �verifyb s ���� zVerifyKey.verifyc C s t j�| j�}t|�S )z� Converts a :class:`~nacl.signing.VerifyKey` to a :class:`~nacl.public.PublicKey` :rtype: :class:`~nacl.public.PublicKey` )r* r+ Z$crypto_sign_ed25519_pk_to_curve25519r- �_Curve25519_PublicKey)r Zraw_pkr r r �to_curve25519_public_key� s z"VerifyKey.to_curve25519_public_key)r r r r r � RawEncoderr �Encoderr. r/ �intr4 �object�boolr< r? r rC rD rE r r r r r" ; s0 �� ����� �)r" c @ s� e Zd ZdZejfdedejfdd�Zdefdd�Z de fd d �Z d e de fd d �Zd e de fdd�Zeddd��Zejfdedejdefdd�Zdefdd�ZdS )� SigningKeya� Private key for producing digital signatures using the Ed25519 algorithm. Signing keys are produced from a 32-byte (256-bit) random seed value. This value can be passed into the :class:`~nacl.signing.SigningKey` as a :func:`bytes` whose length is 32. .. warning:: This **must** be protected and remain secret. Anyone who knows the value of your :class:`~nacl.signing.SigningKey` or it's seed can masquerade as you. :param seed: [:class:`bytes`] Random 32-byte value (i.e. private key) :param encoder: A class that is able to decode the seed :ivar: verify_key: [:class:`~nacl.signing.VerifyKey`] The verify (i.e. public) key that corresponds with this signing key. �seedr$ c C sj |� |�}t|t�st�d��t|�tjjkr t� dtjj ��tj� |�\}}|| _ || _ t |�| _d S )Nz.SigningKey must be created from a 32 byte seedz&The seed must be exactly %d bytes long)r% r& r r' r( r) r* r+ �crypto_sign_SEEDBYTESr, Zcrypto_sign_seed_keypair�_seed� _signing_keyr" Z verify_key)r rL r$ Z public_keyZ secret_keyr r r r. � s ���zSigningKey.__init__r c C r r )rN r r r r r/ � r0 zSigningKey.__bytes__c C r1 r r2 r r r r r4 � r5 zSigningKey.__hash__r6 c C r7 r8 r9 r; r r r r< � r= zSigningKey.__eq__c C r> r r r; r r r r? � r@ zSigningKey.__ne__c C s | t tjj�tjd�S )z� Generates a random :class:`~nacl.signing.SigningKey` object. :rtype: :class:`~nacl.signing.SigningKey` )r$ )r r* r+ rM r rF )r r r r �generate� s �zSigningKey.generater c C sT t j�|| j�}t jj}|�|d|� �}|�||d� �}|�|�}t�|||�S )z� Sign a message using this key. :param message: [:class:`bytes`] The data to be signed. :param encoder: A class that is used to encode the signed message. :rtype: :class:`~nacl.signing.SignedMessage` N)r* r+ Z crypto_signrO rB �encoder r )r r r$ Z raw_signedrB r Zsignedr r r �sign� s zSigningKey.signc C s | j }tj�|�}t|�S )z� Converts a :class:`~nacl.signing.SigningKey` to a :class:`~nacl.public.PrivateKey` :rtype: :class:`~nacl.public.PrivateKey` )rO r* r+ Z$crypto_sign_ed25519_sk_to_curve25519�_Curve25519_PrivateKey)r �skZ raw_privater r r �to_curve25519_private_key� s z$SigningKey.to_curve25519_private_keyN)r rK )r r r r r rF r rG r. r/ rH r4 rI rJ r< r? r rP r rR rS rU r r r r rK � s. �� � ��� �rK )�typingr Z nacl.bindingsr* r r r' Z nacl.publicr rS r rD Z nacl.utilsr r r r Z Encodabler" rK r r r r �<module> s ![