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cryptography
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hazmat
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primitives
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asymmetric
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3 l�_�6 � & @ s� d dl mZmZmZ d dlZd dlZd dlZd dlmZ d dl m Z d dl m Z G dd� de �Zejej�G dd � d e ��Zejej�G d d � d e ��Zejej�G d d � d e ��Zejej�G dd� de��Zejej�G dd� de ��ZeZeje�G dd� de ��Zeje�G dd� de ��Zeje�G dd� de ��Zeje�G dd� de ��Zeje�G dd� de ��Z eje�G d d � d e ��Z eje�G d d � d e ��Z eje�G d d!� d!e ��Z eje�G d"d#� d#e ��Z eje�G d$d%� d%e ��Z!eje�G d&d'� d'e ��Z"eje�G d(d)� d)e ��Z#eje�G d*d+� d+e ��Z$eje�G d,d-� d-e ��Z%eje�G d.d/� d/e ��Z&eje�G d0d1� d1e ��Z'eje�G d2d3� d3e ��Z(eje�G d4d5� d5e ��Z)eje�G d6d7� d7e ��Z*e'e$e'e&e$e#e"e%e!e e e e e eeeee(e)e*d8�Z+eje�G d9d:� d:e ��Z,dGd;d<�Z-dHd=d>�Z.G d?d@� d@e �Z/G dAdB� dBe �Z0G dCdD� dDe �Z1ej'e'ej&e&ej%e%ej$e$ej#e#ej"e"ej2e(ej3e)ej4e*ej!e!ej e ej e ejeej e ejeej e ejeej e ejeiZ5dEdF� Z6dS )I� )�absolute_import�division�print_functionN)�utils)�ObjectIdentifier)� _get_backendc @ s� e Zd Zed�Zed�Zed�Zed�Zed�Zed�Z ed�Z ed�Z ed �Z ed �Z ed �Zed �Zed �Zed�Zed�Zed�Zed�Zed�Zed�ZdS )�EllipticCurveOIDz1.2.840.10045.3.1.1z 1.3.132.0.33z 1.3.132.0.10z1.2.840.10045.3.1.7z 1.3.132.0.34z 1.3.132.0.35z1.3.36.3.3.2.8.1.1.7z1.3.36.3.3.2.8.1.1.11z1.3.36.3.3.2.8.1.1.13z 1.3.132.0.1z 1.3.132.0.15z 1.3.132.0.26z 1.3.132.0.27z 1.3.132.0.16z 1.3.132.0.17z 1.3.132.0.36z 1.3.132.0.37z 1.3.132.0.38z 1.3.132.0.39N)�__name__� __module__� __qualname__r � SECP192R1� SECP224R1� SECP256K1� SECP256R1� SECP384R1� SECP521R1�BRAINPOOLP256R1�BRAINPOOLP384R1�BRAINPOOLP512R1� SECT163K1� SECT163R2� SECT233K1� SECT233R1� SECT283K1� SECT283R1� SECT409K1� SECT409R1� SECT571K1� SECT571R1� r r �/usr/lib64/python3.6/ec.pyr s& r c @ s( e Zd Zejdd� �Zejdd� �ZdS )� EllipticCurvec C s dS )z8 The name of the curve. e.g. secp256r1. Nr )�selfr r r �name) s zEllipticCurve.namec C s dS )z< Bit size of a secret scalar for the curve. Nr )r" r r r �key_size/ s zEllipticCurve.key_sizeN)r r r �abc�abstractpropertyr# r$ r r r r r! ' s r! c @ s e Zd Zejdd� �ZdS )� EllipticCurveSignatureAlgorithmc C s dS )z@ The digest algorithm used with this signature. Nr )r" r r r � algorithm8 s z)EllipticCurveSignatureAlgorithm.algorithmN)r r r r% r& r( r r r r r' 6 s r' c @ s` e Zd Zejdd� �Zejdd� �Zejdd� �Zejdd� �Z ejd d � �Z ejd d � �Z d S )�EllipticCurvePrivateKeyc C s dS )zN Returns an AsymmetricSignatureContext used for signing data. Nr )r" �signature_algorithmr r r �signerA s z EllipticCurvePrivateKey.signerc C s dS )z} Performs a key exchange operation using the provided algorithm with the provided peer's public key. Nr )r" r( Zpeer_public_keyr r r �exchangeG s z EllipticCurvePrivateKey.exchangec C s dS )zB The EllipticCurvePublicKey for this private key. Nr )r" r r r � public_keyN s z"EllipticCurvePrivateKey.public_keyc C s dS )z8 The EllipticCurve that this key is on. Nr )r" r r r �curveT s z EllipticCurvePrivateKey.curvec C s dS )z< Bit size of a secret scalar for the curve. Nr )r" r r r r$ Z s z EllipticCurvePrivateKey.key_sizec C s dS )z Signs the data Nr )r" �datar* r r r �sign` s z EllipticCurvePrivateKey.signN) r r r r% �abstractmethodr+ r, r- r& r. r$ r0 r r r r r) ? s r) c @ s( e Zd Zejdd� �Zejdd� �ZdS )�(EllipticCurvePrivateKeyWithSerializationc C s dS )z9 Returns an EllipticCurvePrivateNumbers. Nr )r" r r r �private_numbersi s z8EllipticCurvePrivateKeyWithSerialization.private_numbersc C s dS )z6 Returns the key serialized as bytes. Nr )r" �encoding�formatZencryption_algorithmr r r � private_byteso s z6EllipticCurvePrivateKeyWithSerialization.private_bytesN)r r r r% r1 r3 r6 r r r r r2 g s r2 c @ sl e Zd Zejdd� �Zejdd� �Zejdd� �Zejdd� �Z ejd d � �Z ejd d � �Z e d d� �Z dS )�EllipticCurvePublicKeyc C s dS )zQ Returns an AsymmetricVerificationContext used for signing data. Nr )r" � signaturer* r r r �verifierx s z EllipticCurvePublicKey.verifierc C s dS )z8 The EllipticCurve that this key is on. Nr )r" r r r r. ~ s z EllipticCurvePublicKey.curvec C s dS )z< Bit size of a secret scalar for the curve. Nr )r" r r r r$ � s z EllipticCurvePublicKey.key_sizec C s dS )z8 Returns an EllipticCurvePublicNumbers. Nr )r" r r r �public_numbers� s z%EllipticCurvePublicKey.public_numbersc C s dS )z6 Returns the key serialized as bytes. Nr )r" r4 r5 r r r � public_bytes� s z#EllipticCurvePublicKey.public_bytesc C s dS )z5 Verifies the signature of the data. Nr )r" r8 r/ r* r r r �verify� s z EllipticCurvePublicKey.verifyc C sb t jd|� t|t�s td��t|�dkr2td��tj|d�d krJtd��dd l m } |j ||�S ) Nr/ z'curve must be an EllipticCurve instancer z%data must not be an empty byte string� � � z%Unsupported elliptic curve point type)�backend)r= r> r? ) r � _check_bytes� isinstancer! � TypeError�len� ValueError�sixZ indexbytesZ,cryptography.hazmat.backends.openssl.backendr@ Z load_elliptic_curve_public_bytes)�clsr. r/ r@ r r r �from_encoded_point� s z)EllipticCurvePublicKey.from_encoded_pointN)r r r r% r1 r9 r& r. r$ r: r; r< � classmethodrH r r r r r7 v s r7 c @ s e Zd ZdZdZdS )r � sect571r1i: N)r r r r# r$ r r r r r � s r c @ s e Zd ZdZdZdS )r � sect409r1i� N)r r r r# r$ r r r r r � s r c @ s e Zd ZdZdZdS )r � sect283r1i N)r r r r# r$ r r r r r � s r c @ s e Zd ZdZdZdS )r � sect233r1�� N)r r r r# r$ r r r r r � s r c @ s e Zd ZdZdZdS )r � sect163r2� N)r r r r# r$ r r r r r � s r c @ s e Zd ZdZdZdS )r � sect571k1i; N)r r r r# r$ r r r r r � s r c @ s e Zd ZdZdZdS )r � sect409k1i� N)r r r r# r$ r r r r r � s r c @ s e Zd ZdZdZdS )r � sect283k1i N)r r r r# r$ r r r r r � s r c @ s e Zd ZdZdZdS )r � sect233k1rN N)r r r r# r$ r r r r r � s r c @ s e Zd ZdZdZdS )r � sect163k1rP N)r r r r# r$ r r r r r � s r c @ s e Zd ZdZdZdS )r � secp521r1i N)r r r r# r$ r r r r r � s r c @ s e Zd ZdZdZdS )r � secp384r1i� N)r r r r# r$ r r r r r � s r c @ s e Zd ZdZdZdS )r � secp256r1� N)r r r r# r$ r r r r r � s r c @ s e Zd ZdZdZdS )r � secp256k1rY N)r r r r# r$ r r r r r � s r c @ s e Zd ZdZdZdS )r � secp224r1�� N)r r r r# r$ r r r r r s r c @ s e Zd ZdZdZdS )r � secp192r1� N)r r r r# r$ r r r r r s r c @ s e Zd ZdZdZdS )�BrainpoolP256R1�brainpoolP256r1rY N)r r r r# r$ r r r r r_ s r_ c @ s e Zd ZdZdZdS )�BrainpoolP384R1�brainpoolP384r1i� N)r r r r# r$ r r r r ra s ra c @ s e Zd ZdZdZdS )�BrainpoolP512R1�brainpoolP512r1i N)r r r r# r$ r r r r rc s rc )Z prime192v1Z prime256v1r] r[ rX rW rV rZ rU rT rS rR rQ rO rM rL rK rJ r` rb rd c @ s e Zd Zdd� Zejd�ZdS )�ECDSAc C s || _ d S )N)� _algorithm)r" r( r r r �__init__> s zECDSA.__init__rf N)r r r rg r �read_only_propertyr( r r r r re < s re c C s t |�}|j| �S )N)r Z#generate_elliptic_curve_private_key)r. r@ r r r �generate_private_keyD s ri c C sJ t |�}t| tj�s td��| dkr,td��t|t�s>td��|j| |�S )Nz&private_value must be an integer type.r z)private_value must be a positive integer.z/curve must provide the EllipticCurve interface.)r rB rF � integer_typesrC rE r! Z!derive_elliptic_curve_private_key)� private_valuer. r@ r r r �derive_private_keyI s rl c @ sp e Zd Zdd� Zddd�Zdd� Zedd � �Zej d �Z ej d �Z ej d �Z d d� Z dd� Zdd� Zdd� ZdS )�EllipticCurvePublicNumbersc C sL t |tj� s t |tj� r$td��t |t�s6td��|| _|| _|| _d S )Nzx and y must be integers.z/curve must provide the EllipticCurve interface.)rB rF rj rC r! �_y�_x�_curve)r" �x�yr. r r r rg X s z#EllipticCurvePublicNumbers.__init__Nc C s t |�}|j| �S )N)r Z"load_elliptic_curve_public_numbers)r" r@ r r r r- e s z%EllipticCurvePublicNumbers.public_keyc C sB t jdtjdd� | jjd d }dtj| j|� tj| j|� S )Nz�encode_point has been deprecated on EllipticCurvePublicNumbers and will be removed in a future version. Please use EllipticCurvePublicKey.public_bytes to obtain both compressed and uncompressed point encoding.r= )� stacklevel� � � ) �warnings�warnr �PersistentlyDeprecated2019r. r$ Z int_to_bytesrq rr )r" � byte_lengthr r r � encode_pointi s z'EllipticCurvePublicNumbers.encode_pointc C s� t |t�std��tjdtjdd� |jd�r�|jd d }t |�d| d kr�tj |d|d � d �}tj ||d d � d �}| |||�S t d ��nt d ��d S ) Nz'curve must be an EllipticCurve instancez�Support for unsafe construction of public numbers from encoded data will be removed in a future version. Please use EllipticCurvePublicKey.from_encoded_pointr= )rs rv rt ru � Zbigz(Invalid elliptic curve point data lengthz%Unsupported elliptic curve point type) rB r! rC rw rx r ry � startswithr$ rD Zint_from_bytesrE )rG r. r/ rz rq rr r r r rH z s z-EllipticCurvePublicNumbers.from_encoded_pointrp ro rn c C sF t |t�stS | j|jkoD| j|jkoD| jj|jjkoD| jj|jjkS )N)rB rm �NotImplementedrq rr r. r# r$ )r" �otherr r r �__eq__� s z!EllipticCurvePublicNumbers.__eq__c C s | |k S )Nr )r" r r r r �__ne__� s z!EllipticCurvePublicNumbers.__ne__c C s t | j| j| jj| jjf�S )N)�hashrq rr r. r# r$ )r" r r r �__hash__� s z#EllipticCurvePublicNumbers.__hash__c C s dj | �S )NzC<EllipticCurvePublicNumbers(curve={0.curve.name}, x={0.x}, y={0.y}>)r5 )r" r r r �__repr__� s z#EllipticCurvePublicNumbers.__repr__)N)r r r rg r- r{ rI rH r rh r. rq rr r� r� r� r� r r r r rm W s rm c @ sJ e Zd Zdd� Zddd�Zejd�Zejd�Zdd � Z d d � Z d d � Z dS )�EllipticCurvePrivateNumbersc C s6 t |tj�std��t |t�s&td��|| _|| _d S )Nz!private_value must be an integer.z>public_numbers must be an EllipticCurvePublicNumbers instance.)rB rF rj rC rm �_private_value�_public_numbers)r" rk r: r r r rg � s z$EllipticCurvePrivateNumbers.__init__Nc C s t |�}|j| �S )N)r Z#load_elliptic_curve_private_numbers)r" r@ r r r � private_key� s z'EllipticCurvePrivateNumbers.private_keyr� r� c C s& t |t�stS | j|jko$| j|jkS )N)rB r� r~ rk r: )r" r r r r r� � s z"EllipticCurvePrivateNumbers.__eq__c C s | |k S )Nr )r" r r r r r� � s z"EllipticCurvePrivateNumbers.__ne__c C s t | j| jf�S )N)r� rk r: )r" r r r r� � s z$EllipticCurvePrivateNumbers.__hash__)N) r r r rg r� r rh rk r: r� r� r� r r r r r� � s r� c @ s e Zd ZdS )�ECDHN)r r r r r r r r� � s r� c C s* yt | S tk r$ td��Y nX d S )NzCThe provided object identifier has no matching elliptic curve class)� _OID_TO_CURVE�KeyError� LookupError)Zoidr r r �get_curve_for_oid� s r� )N)N)7Z __future__r r r r% rw rF Z cryptographyr Zcryptography.hazmat._oidr Z cryptography.hazmat.backendsr �objectr Z add_metaclass�ABCMetar! r' r) r2 r7 Z'EllipticCurvePublicKeyWithSerializationZregister_interfacer r r r r r r r r r r r r r r r r_ ra rc Z _CURVE_TYPESre ri rl rm r� r� r r r r� r� r r r r �<module> s� '7 X%
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