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o �)%a� � @ s d dl Z d dlZd dlmZ d dlmZ d dlmZmZ d dl m Z m Z mZ G dd� de j d�ZeZG d d � d e j d�ZeZG d d � d e j d�ZeZG d d� de�ZG dd� de�ZG dd� de�Zd dedefdd�Zd dedefdd�Zdefdd�Zd efd d �Z dS ) � N)�utils)� _get_backend)�_serialization�hashes)�AsymmetricSignatureContext� AsymmetricVerificationContextr c @ s, e Zd Zejd dd��Zejd dd��ZdS ) � DSAParameters�return� DSAPrivateKeyc C � dS )z8 Generates and returns a DSAPrivateKey. N� ��selfr r �O/usr/lib/python3/dist-packages/cryptography/hazmat/primitives/asymmetric/dsa.py�generate_private_key � z"DSAParameters.generate_private_key�DSAParameterNumbersc C r )z0 Returns a DSAParameterNumbers. Nr r r r r �parameter_numbers r z DSAParameters.parameter_numbersN)r r )r r )�__name__� __module__� __qualname__�abc�abstractmethodr r r r r r r s r )� metaclassc @ s� e Zd Zejdefdd��Zejddd��Zejde fdd��Z ejd e j de fd d ��Zejd ed ejeje j f defdd��Zejddd��Zejdejdejdejdefdd��ZdS )r r c C r �z6 The bit length of the prime modulus. Nr r r r r �key_size% r zDSAPrivateKey.key_size� DSAPublicKeyc C r )zD The DSAPublicKey associated with this private key. Nr r r r r � public_key+ r zDSAPrivateKey.public_keyc C r )zL The DSAParameters object associated with this private key. Nr r r r r � parameters1 r zDSAPrivateKey.parameters�signature_algorithmc C r )zN Returns an AsymmetricSignatureContext used for signing data. Nr )r r r r r �signer7 r zDSAPrivateKey.signer�data� algorithmc C r )z Signs the data Nr )r r! r" r r r �sign@ r zDSAPrivateKey.sign�DSAPrivateNumbersc C r )z. Returns a DSAPrivateNumbers. Nr r r r r �private_numbersJ r z DSAPrivateKey.private_numbers�encoding�format�encryption_algorithmc C r �z6 Returns the key serialized as bytes. Nr )r r& r' r( r r r � private_bytesP r zDSAPrivateKey.private_bytesN)r r )r r$ )r r r r �abstractproperty�intr r r r r r � HashAlgorithmr r �bytes�typing�Union� asym_utils� Prehashedr# r% r �Encoding� PrivateFormat�KeySerializationEncryptionr* r r r r r $ sB � ��� � ����r c @ s� e Zd Zejdefdd��Zejdefdd��Z ejde de j de fdd ��Zejdd d ��Zejd ejdejde fdd��Zejde de dejeje j f fdd��ZdS )r r c C r r r r r r r r ` r zDSAPublicKey.key_sizec C r )zK The DSAParameters object associated with this public key. Nr r r r r r f r zDSAPublicKey.parameters� signaturer c C r )zQ Returns an AsymmetricVerificationContext used for signing data. Nr )r r6 r r r r �verifierl r zDSAPublicKey.verifier�DSAPublicNumbersc C r )z- Returns a DSAPublicNumbers. Nr r r r r �public_numbersv r zDSAPublicKey.public_numbersr& r' c C r r) r )r r& r' r r r � public_bytes| r zDSAPublicKey.public_bytesr! r" c C r )z5 Verifies the signature of the data. Nr )r r6 r! r" r r r �verify� r zDSAPublicKey.verifyN)r r8 )r r r r r+ r, r r r r r. r r- r r7 r9 r r3 � PublicFormatr: r/ r0 r1 r2 r; r r r r r _ s> �� � �� � ���r c @ sh e Zd Zdededefdd�Ze�d�Ze�d�Ze�d�Z dd e fd d �Z d d� Z dd� Z dd� Zd S )r �p�q�gc C s< t |t�rt |t�rt |t�std��|| _|| _|| _d S )Nz;DSAParameterNumbers p, q, and g arguments must be integers.)� isinstancer, � TypeError�_p�_q�_g)r r= r> r? r r r �__init__� s ���� z DSAParameterNumbers.__init__rB rC rD Nr c C � t |�}|�| �S �N)r �load_dsa_parameter_numbers�r �backendr r r r � � z DSAParameterNumbers.parametersc C s2 t |t�stS | j|jko| j|jko| j|jkS rG )r@ r �NotImplementedr= r> r? �r �otherr r r �__eq__� s $zDSAParameterNumbers.__eq__c C � | |k S rG r rM r r r �__ne__� � zDSAParameterNumbers.__ne__c C � dj | d�S )Nz9<DSAParameterNumbers(p={self.p}, q={self.q}, g={self.g})>r �r' r r r r �__repr__� � ��z DSAParameterNumbers.__repr__rG )r r r r, rE r �read_only_propertyr= r> r? r r rO rQ rU r r r r r � s r c @ sZ e Zd Zdedefdd�Ze�d�Ze�d�Z dde fd d �Z d d � Z d d� Z dd� ZdS )r8 �yr c C s4 t |t�s td��t |t�std��|| _|| _d S )Nz/DSAPublicNumbers y argument must be an integer.z9parameter_numbers must be a DSAParameterNumbers instance.)r@ r, rA r �_y�_parameter_numbers)r rX r r r r rE � s � zDSAPublicNumbers.__init__rY rZ Nr c C rF rG )r �load_dsa_public_numbersrI r r r r � rK zDSAPublicNumbers.public_keyc C �& t |t�stS | j|jko| j|jkS rG )r@ r8 rL rX r rM r r r rO � s �zDSAPublicNumbers.__eq__c C rP rG r rM r r r rQ � rR zDSAPublicNumbers.__ne__c C rS )NzJ<DSAPublicNumbers(y={self.y}, parameter_numbers={self.parameter_numbers})>r rT r r r r rU � rV zDSAPublicNumbers.__repr__rG )r r r r, r rE r rW rX r r r rO rQ rU r r r r r8 � s r8 c @ sR e Zd Zdedefdd�Ze�d�Ze�d�Z dde fd d �Z d d � Z d d� Z dS )r$ �xr9 c C s4 t |t�s td��t |t�std��|| _|| _d S )Nz0DSAPrivateNumbers x argument must be an integer.z3public_numbers must be a DSAPublicNumbers instance.)r@ r, rA r8 �_public_numbers�_x)r r] r9 r r r rE � s � zDSAPrivateNumbers.__init__r_ r^ Nr c C rF rG )r �load_dsa_private_numbersrI r r r � private_key� rK z DSAPrivateNumbers.private_keyc C r\ rG )r@ r$ rL r] r9 rM r r r rO � s �zDSAPrivateNumbers.__eq__c C rP rG r rM r r r rQ � rR zDSAPrivateNumbers.__ne__rG )r r r r, r8 rE r rW r] r9 r ra rO rQ r r r r r$ � s r$ r r c C rF rG )r �generate_dsa_parameters�r rJ r r r �generate_parameters rK rd c C rF rG )r �'generate_dsa_private_key_and_parametersrc r r r r rK r r c C sX | j �� dvr td��| j�� dvrtd��d| j k r%| j k s*td�� td��d S )N)i i i i z5p must be exactly 1024, 2048, 3072, or 4096 bits long)� �� � z,q must be exactly 160, 224, or 256 bits long� z g, p don't satisfy 1 < g < p.)r= � bit_length� ValueErrorr> r? )r r r r �_check_dsa_parameters s ���rl �numbersc C sT | j j}t|� | jdks| j|jkrtd��| j jt|j| j|j �kr(td��d S )Nr zx must be > 0 and < q.z y must be equal to (g ** x % p).) r9 r rl r] r> rk rX �powr? r= )rm r r r r �_check_dsa_private_numbers s �ro rG ) r r/ � cryptographyr � cryptography.hazmat.backendsr � cryptography.hazmat.primitivesr r �)cryptography.hazmat.primitives.asymmetricr r r1 �ABCMetar �DSAParametersWithNumbersr � DSAPrivateKeyWithSerializationr � DSAPublicKeyWithSerialization�objectr r8 r$ r, rd r rl ro r r r r �<module> s& 83''
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