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o �)%a�. � @ s� d dl Z d dlZd dlmZ d dlmZ d dlmZmZ d dl m Z d dl m Z d dl mZmZ d dlmZ d d lmZmZmZ G d d � d e jd �ZeZG d d� de jd �ZeZ d4dededefdd�Z dededdfdd�Z dededededededed eddfd d �Z d ed eddfd!d"�Z d ed#edefd$d%�Z dededefd&d'�Z!dededefd(d)�Z"dededefd*d+�Z#d,Z$d ed ed-edej%eef fd.d/�Z&G d0d1� d1e'�Z(G d2d3� d3e'�Z)dS )5� N)�gcd)�utils)�UnsupportedAlgorithm�_Reasons)� _get_backend)� RSABackend)�_serialization�hashes)�AsymmetricPadding)�AsymmetricSignatureContext� AsymmetricVerificationContextr c @ s� e Zd Zejdedejdefdd��Z ejde dede fdd��Z ej de fd d ��Zejdd d ��Zejde dedejejejf de fdd��Zejddd��Zejdejdejdejde fdd��ZdS ) � RSAPrivateKey�padding� algorithm�returnc C � dS )zN Returns an AsymmetricSignatureContext used for signing data. N� )�selfr r r r �O/usr/lib/python3/dist-packages/cryptography/hazmat/primitives/asymmetric/rsa.py�signer � zRSAPrivateKey.signer� ciphertextc C r )z3 Decrypts the provided ciphertext. Nr )r r r r r r �decrypt r zRSAPrivateKey.decryptc C r �z7 The bit length of the public modulus. Nr �r r r r �key_size& r zRSAPrivateKey.key_size� RSAPublicKeyc C r )zD The RSAPublicKey associated with this private key. Nr r r r r � public_key, r zRSAPrivateKey.public_key�datac C r )z! Signs the data. Nr )r r r r r r r �sign2 r zRSAPrivateKey.sign�RSAPrivateNumbersc C r )z/ Returns an RSAPrivateNumbers. Nr r r r r �private_numbers= r z RSAPrivateKey.private_numbers�encoding�format�encryption_algorithmc C r �z6 Returns the key serialized as bytes. Nr )r r" r# r$ r r r � private_bytesC r zRSAPrivateKey.private_bytesN)r r )r r )�__name__� __module__� __qualname__�abc�abstractmethodr r � HashAlgorithmr r �bytesr �abstractproperty�intr r �typing�Union� asym_utils� Prehashedr r! r �Encoding� PrivateFormat�KeySerializationEncryptionr& r r r r r sJ �� � ��� � ����r )� metaclassc @ s� e Zd Zejdededejde fdd��Z ejdededefdd ��Z ej de fd d ��Zejdd d��Zejdejdejdefdd��Zejdedededejejejf ddf dd��Zejdededejej defdd��ZdS )r � signaturer r r c C r )zY Returns an AsymmetricVerificationContext used for verifying signatures. Nr �r r8 r r r r r �verifierS r zRSAPublicKey.verifier� plaintextc C r )z/ Encrypts the given plaintext. Nr )r r; r r r r �encrypt^ r zRSAPublicKey.encryptc C r r r r r r r r d r zRSAPublicKey.key_size�RSAPublicNumbersc C r )z- Returns an RSAPublicNumbers Nr r r r r �public_numbersj r zRSAPublicKey.public_numbersr" r# c C r r% r )r r" r# r r r � public_bytesp r zRSAPublicKey.public_bytesr Nc C r )z5 Verifies the signature of the data. Nr )r r8 r r r r r r �verifyz r zRSAPublicKey.verifyc C r )z@ Recovers the original data from the signature. Nr r9 r r r �recover_data_from_signature� r z(RSAPublicKey.recover_data_from_signature)r r= )r' r( r) r* r+ r- r r r, r r: r< r. r/ r r> r r4 � PublicFormatr? r0 r1 r2 r3 r@ �OptionalrA r r r r r R s^ ��� � �� � ���� � �� ��r �public_exponentr r c C s4 t |�}t|t�stdtj��t| |� |�| |�S )Nz-Backend object does not implement RSABackend.)r � isinstancer r r �BACKEND_MISSING_INTERFACE�_verify_rsa_parameters�generate_rsa_private_key)rD r �backendr r r �generate_private_key� s � rJ c C s$ | dvrt d��|dk rt d��d S )N)� i zopublic_exponent must be either 3 (for legacy compatibility) or 65537. Almost everyone should choose 65537 here!i z#key_size must be at least 512-bits.�� ValueError)rD r r r r rG � s ��rG �p�q�private_exponent�dmp1�dmq1�iqmp�modulusc C s� |dk rt d��| |krt d��||krt d��||kr t d��||kr(t d��||kr0t d��||kr8t d��|dk s@||krDt d ��|d @ d krNt d ��|d @ d krXt d ��|d @ d krbt d��| | |krlt d��d S )NrK zmodulus must be >= 3.zp must be < modulus.zq must be < modulus.zdmp1 must be < modulus.zdmq1 must be < modulus.ziqmp must be < modulus.z#private_exponent must be < modulus.z+public_exponent must be >= 3 and < modulus.� r z public_exponent must be odd.zdmp1 must be odd.zdmq1 must be odd.zp*q must equal modulus.rL )rN rO rP rQ rR rS rD rT r r r � _check_private_key_components� s2 �rV �e�nc C s@ |dk rt d��| dk s| |krt d��| d@ dkr t d��d S )NrK zn must be >= 3.ze must be >= 3 and < n.rU r ze must be odd.rL )rW rX r r r � _check_public_key_components� s �rY �mc C sX d\}}| |}}|dkr(t ||�\}}||| }||||f\}}}}|dks || S )zO Modular Multiplicative Inverse. Returns x such that: (x*e) mod m == 1 )rU r r )�divmod) rW rZ �x1�x2�a�brO �r�xnr r r �_modinv� s �rb c C s t || �S )zF Compute the CRT (q ** -1) % p value from RSA primes p and q. )rb )rN rO r r r � rsa_crt_iqmp� s rc c C � | |d S )zg Compute the CRT private_exponent % (p - 1) value from the RSA private_exponent (d) and p. rU r )rP rN r r r � rsa_crt_dmp1� � re c C rd )zg Compute the CRT private_exponent % (q - 1) value from the RSA private_exponent (d) and q. rU r )rP rO r r r � rsa_crt_dmq1 rf rg i� �dc C s� || d }|}|d dkr|d }|d dksd}d}|s\|t k r\|}||k rRt||| �}|dkrJ|| d krJt|d| �dkrJt|d | �} d}n|d9 }||k s(|d7 }|s\|t k s"|sbtd��t| | �\} } | dksoJ �t| | fdd�\} } | | fS )z� Compute factors p and q from the private exponent d. We assume that n has no more than two factors. This function is adapted from code in PyCrypto. rU � r FTz2Unable to compute factors p and q from exponent d.)�reverse)�_MAX_RECOVERY_ATTEMPTS�powr rM r[ �sorted) rX rW rh �ktot�t�spottedr^ �k�candrN rO r` r r r �rsa_recover_prime_factors s2 � $� � rs c @ s� e Zd Zdededededededdfd d �Ze�d �Ze�d �Ze�d �Z e�d�Z e�d�Z e�d�Z e�d�Z d defdd�Zdd� Zdd� Zdd� ZdS ) r rN rO rh rQ rR rS r> r= c C s� t |t�r t |t�r t |t�r t |t�r t |t�r t |t�s"td��t |t�s+td��|| _|| _|| _|| _|| _|| _ || _ d S )NzNRSAPrivateNumbers p, q, d, dmp1, dmq1, iqmp arguments must all be an integers.zFRSAPrivateNumbers public_numbers must be an RSAPublicNumbers instance.) rE r/ � TypeErrorr= �_p�_q�_d�_dmp1�_dmq1�_iqmp�_public_numbers)r rN rO rh rQ rR rS r> r r r �__init__@ s4 ������� � zRSAPrivateNumbers.__init__ru rv rw rx ry rz r{ Nr c C � t |�}|�| �S �N)r �load_rsa_private_numbers�r rI r r r � private_keym � z RSAPrivateNumbers.private_keyc C sb t |t�stS | j|jko0| j|jko0| j|jko0| j|jko0| j|jko0| j|jko0| j |j kS r~ ) rE r �NotImplementedrN rO rh rQ rR rS r> �r �otherr r r �__eq__q s � � � � � �zRSAPrivateNumbers.__eq__c C � | |k S r~ r r� r r r �__ne__ � zRSAPrivateNumbers.__ne__c C s$ t | j| j| j| j| j| j| jf�S r~ )�hashrN rO rh rQ rR rS r> r r r r �__hash__� s ��zRSAPrivateNumbers.__hash__r~ )r' r( r) r/ r| r �read_only_propertyrN rO rh rQ rR rS r> r r� r� r� r� r r r r r ? s6 ������ � % r c @ sb e Zd Zdedefdd�Ze�d�Ze�d�Zdde fd d �Z d d � Z d d� Z dd� Z dd� ZdS )r= rW rX c C s, t |t�r t |t�std��|| _|| _d S )Nz,RSAPublicNumbers arguments must be integers.)rE r/ rt �_e�_n)r rW rX r r r r| � s zRSAPublicNumbers.__init__r� r� Nr c C r} r~ )r �load_rsa_public_numbersr� r r r r � r� zRSAPublicNumbers.public_keyc C s d� | �S )Nz$<RSAPublicNumbers(e={0.e}, n={0.n})>)r# r r r r �__repr__� r� zRSAPublicNumbers.__repr__c C s& t |t�stS | j|jko| j|jkS r~ )rE r= r� rW rX r� r r r r� � s zRSAPublicNumbers.__eq__c C r� r~ r r� r r r r� � r� zRSAPublicNumbers.__ne__c C s t | j| jf�S r~ )r� rW rX r r r r r� � s zRSAPublicNumbers.__hash__r~ )r' r( r) r/ r| r r� rW rX r r r� r� r� r� r r r r r= � s r= r~ )*r* r0 �mathr � cryptographyr �cryptography.exceptionsr r � cryptography.hazmat.backendsr �'cryptography.hazmat.backends.interfacesr � cryptography.hazmat.primitivesr r �*cryptography.hazmat.primitives._asymmetricr �)cryptography.hazmat.primitives.asymmetricr r r2 �ABCMetar � RSAPrivateKeyWithSerializationr � RSAPublicKeyWithSerializationr/ rJ rG rV rY rb rc re rg rk �Tuplers �objectr r= r r r r �<module> sv 8@��� � �������� �/ ��� �-Q
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