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o ;jW@ � @ s� d dl Z d dlmZmZ d dlmZmZmZmZm Z m Z d dl m Z d dl mZ G dd� de�ZG dd � d e�Ze� ZG d d � d e�ZG d d � d e�ZdS )� N)� bytes_to_long� long_to_bytes)� VoidPointer� null_pointer� SmartPointer�c_size_t� c_uint8_ptr� c_ulonglong)�Integer)� getrandbitsc @ s0 e Zd ZdZdZdZdZdZdZdZ dZ d Z d S ) �CurveID� � � � � � � � � N) �__name__� __module__� __qualname__�P192�P224�P256�P384�P521�ED25519�ED448� CURVE25519�CURVE448� r" r" �O/opt/saltstack/salt/lib/python3.10/site-packages/Cryptodome/PublicKey/_point.pyr s r c @ s� e Zd Zi Ze�� Zg d�Zg d�Zg d�Z g d�Z g d�Z ddgZ dd gZ g d �Zg d �Zee e e e e e e e Zd d � Zdd� Zdd� Zdd� Zdd� ZdS )�_Curves)�p192z NIST P-192zP-192Z prime192v1Z secp192r1Znistp192)�p224z NIST P-224zP-224Z prime224v1Z secp224r1Znistp224)�p256z NIST P-256zP-256Z prime256v1Z secp256r1Znistp256)�p384z NIST P-384zP-384Z prime384v1Z secp384r1Znistp384)�p521z NIST P-521zP-521Z prime521v1Z secp521r1Znistp521�ed25519ZEd25519�ed448ZEd448)� curve25519Z Curve25519ZX25519)�curve448ZCurve448ZX448c C s || j v S �N�� all_names)�self�itemr" r" r# � __contains__1 � z_Curves.__contains__c C s | j S r. r/ �r1 r" r" r# �__dir__4 s z_Curves.__dir__c C sF || j v r ddlm} |�� }tj|_| j�t � | j |�� n�|| j v r>ddlm} |� � }tj |_| j�t � | j |�� n�|| jv r]ddlm} |�� }tj|_| j�t � | j|�� n�|| jv r|ddlm} |�� }tj|_| j�t � | j|�� n�|| jv r�ddlm} |�� }tj|_| j�t � | j|�� n�|| jv r�ddlm} |�� } tj| _| j�t � | j| �� nd|| jv r�ddlm} |� � } tj | _| j�t � | j| �� nE|| j v r�ddlm } | � � } tj!| _| j�t � | j | �� n&|| j"v �rddlm } | �#� } tj$| _| j�t � | j"| �� nt%d| ��| j| S )Nr )� _nist_ecc)�_edwards)� _montgomeryzUnsupported curve '%s')&� p192_names� r7 Z p192_curver r �id�curves�update�dict�fromkeys� p224_namesZ p224_curver � p256_namesZ p256_curver � p384_namesZ p384_curver � p521_namesZ p521_curver � ed25519_namesr8 Z ed25519_curver � ed448_namesZ ed448_curver �curve25519_namesr9 Zcurve25519_curver �curve448_namesZcurve448_curver! � ValueError)r1 �namer7 r% r& r' r( r) r8 r* r+ r9 r, r- r" r" r# �load7 s^ z _Curves.loadc C s� | j �W | j�|�}|d u rR| �|�}|| jv s || jv r%t|j|�|_n t |j|j |�|_|j t j t jfv |_|j t jt jfv |_|jpG|j |_W d � |S W d � |S 1 s]w Y |S r. )� curves_lockr= �getrK rG rH � EccXPointZGx�G�EccPointZGyr< r r r � is_edwardsr r! Z is_montgomeryZis_weierstrass)r1 rJ �curver" r" r# � __getitem__i s* �� � � � � z_Curves.__getitem__c C s | j D ]}| | }q| j�� S r. )r0 r= �items)r1 rJ �_r" r" r# rT y s z _Curves.itemsN)r r r r= � threading�RLockrL r: rA rB rC rD rE rF rG rH r0 r3 r6 rK rS rT r" r" r" r# r$ s4 ����2 r$ c @ s� e Zd ZdZd*dd�Zdd� Zdd� Zd d � Zd d � Zd d� Z dd� Z dd� Z e dd� �Z e dd� �Ze dd� �Zdd� Zdd � Zd d � Zd d � Zd!d"� Zd#d$� Zd%d&� Zd'd(� Zd)S )+rP a� A class to model a point on an Elliptic Curve. The class supports operators for: * Adding two points: ``R = S + T`` * In-place addition: ``S += T`` * Negating a point: ``R = -T`` * Comparing two points: ``if S == T: ...`` or ``if S != T: ...`` * Multiplying a point by a scalar: ``R = S*k`` * In-place multiplication by a scalar: ``T *= k`` :ivar curve: The **canonical** name of the curve as defined in the `ECC table`_. :vartype curve: string :ivar x: The affine X-coordinate of the ECC point :vartype x: integer :ivar y: The affine Y-coordinate of the ECC point :vartype y: integer :ivar xy: The tuple with affine X- and Y- coordinates r' c C s& zt | | _W n ty tdt|� ��w | jj| _| jjtj kr'td��| � � }t ||�}t ||�}t |�|ksAt |�|krEtd��| jj j}| jj j}t� | _z| jj�� } W n tyf t} Y nw || j�� t|�t|�t|�| �} | r�| dkr�td��td| ��t| j�� |�| _d S )N�Unknown curve name %sz)EccPoint cannot be created for Curve25519�Incorrect coordinate length� �)The EC point does not belong to the curve�(Error %d while instantiating an EC point)�_curves�_curve�KeyErrorrI �str� canonicalrR r< r r � size_in_bytesr �len�rawlib� new_point� free_pointr �_point�contextrM �AttributeErrorr � address_ofr r r ) r1 �x�yrR � modulus_bytes�xb�ybre � free_funcrh �resultr" r" r# �__init__� s@ � � � zEccPoint.__init__c C �X | j jj}| j jj}t� | _|| j�� |j�� �}|r!td| ��t | j�� |�| _| S �Nz"Error %d while cloning an EC point� r^ rd �clonerf r rg rj rM rI r �r1 �pointrv rp rq r" r" r# �set� s � z EccPoint.setc C s2 t |t�sdS | jjj}d|| j�� |j�� �kS �NFr )� isinstancerP r^ rd �cmprg rM )r1 rx �cmp_funcr" r" r# �__eq__� s zEccPoint.__eq__c C s | |k S r. r" )r1 rx r" r" r# �__ne__� r4 zEccPoint.__ne__c C s4 | j jj}| �� }||j�� �}|rtd| ��|S )Nz$Error %d while inverting an EC point)r^ rd �neg�copyrg rM rI )r1 Zneg_func�nprq r" r" r# �__neg__� s zEccPoint.__neg__c C s | j \}}t||| j�}|S �z Return a copy of this point.)�xyrP rR )r1 rk rl r� r" r" r# r� � s z EccPoint.copyc C s | j jr | jdkS | jdkS )�,``True`` if this is the *point-at-infinity*.r )r r )r^ rQ rk r� r5 r" r" r# �is_point_at_infinity� s z EccPoint.is_point_at_infinityc C s$ | j jr tdd| j�S tdd| j�S )�-Return the *point-at-infinity* for the curve.r r )r^ rQ rP rR r5 r" r" r# �point_at_infinity� s zEccPoint.point_at_infinityc C � | j d S )Nr �r� r5 r" r" r# rk � � z EccPoint.xc C r� )Nr r� r5 r" r" r# rl � r� z EccPoint.yc C sj | � � }t|�}t|�}| jjj}|t|�t|�t|�| j�� �}|r)t d| ��t t |��t t |��fS )Nz#Error %d while encoding an EC point) rb � bytearrayr^ rd �get_xyr r rg rM rI r r )r1 rm rn ro r� rq r" r" r# r� s � z EccPoint.xyc C � | � � d d S �z"Size of each coordinate, in bytes.r r �� size_in_bitsr5 r" r" r# rb � zEccPoint.size_in_bytesc C � | j jS �z!Size of each coordinate, in bits.�r^ Z modulus_bitsr5 r" r" r# r� � zEccPoint.size_in_bitsc C s, | j jj}|| j�� �}|rtd| ��| S )zuDouble this point (in-place operation). Returns: This same object (to enable chaining). z#Error %d while doubling an EC point)r^ rd �doublerg rM rI )r1 Z double_funcrq r" r" r# r� s zEccPoint.doublec C sD | j jj}|| j�� |j�� �}|r |dkrtd��td| ��| S )z Add a second point to this one� z#EC points are not on the same curvez#Error %d while adding two EC points)r^ rd �addrg rM rI )r1 rx Zadd_funcrq r" r" r# �__iadd__' s zEccPoint.__iadd__c C s | � � }||7 }|S )z8Return a new point, the addition of this one and another�r� )r1 rx r� r" r" r# �__add__2 � zEccPoint.__add__c C �^ | j jj}|dk r td��t|�}|| j�� t|�tt |��t t d���}|r-td| ��| S �z Multiply this point by a scalarr z?Scalar multiplication is only defined for non-negative integers�@ z%Error %d during scalar multiplication� r^ rd �scalarrI r rg rM r r rc r r �r1 r� Z scalar_funcZsbrq r" r" r# �__imul__9 � � zEccPoint.__imul__c C � | � � }||9 }|S �z2Return a new point, the scalar product of this oner� �r1 r� r� r" r" r# �__mul__H r� zEccPoint.__mul__c C � | � |�S r. �r� �r1 Z left_handr" r" r# �__rmul__O r4 zEccPoint.__rmul__N)r' )r r r �__doc__rr ry r~ r r� r� r� r� �propertyrk rl r� rb r� r� r� r� r� r� r� r" r" r" r# rP � s0 ) rP c @ st e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z e dd� �Z dd� Z dd� Z dd� Zdd� Zdd� ZdS )rN a� A class to model a point on an Elliptic Curve, where only the X-coordinate is exposed. The class supports operators for: * Multiplying a point by a scalar: ``R = S*k`` * In-place multiplication by a scalar: ``T *= k`` :ivar curve: The **canonical** name of the curve as defined in the `ECC table`_. :vartype curve: string :ivar x: The affine X-coordinate of the ECC point :vartype x: integer c C s& zt | | _W n ty tdt|� ��w | jj| _| jjtj tj fvr*td��| jj j }| jj j }t� | _z| jj�� }W n tyK t}Y nw | �� }|d u rWt}ntt||��}t|�|krhtd��t� | _|| j�� |t|�|�}|dkr�td��|r�td| ��t| j�� |�| _d S )NrX z5EccXPoint can only be created for Curve25519/Curve448rY rZ r[ r\ )r] r^ r_ rI r` ra rR r< r r r! rd re rf r rg rh rM ri r rb r r rc rj r r ) r1 rk rR re rp rh rm rn rq r" r" r# rr c sB � � � zEccXPoint.__init__c C rs rt ru rw r" r" r# ry � s � z EccXPoint.setc C s> t |t�sdS | jjj}| j�� }|j�� }|||�}d|kS rz )r{ rN r^ rd r| rg rM )r1 rx r} Zp1Zp2�resr" r" r# r~ � s zEccXPoint.__eq__c C s2 z| j }W n ty | �� Y S w t|| j�S r� )rk rI r� rN rR )r1 rk r" r" r# r� � s � zEccXPoint.copyc C s" z| j }W dS ty Y dS w )r� TF)rk rI )r1 rU r" r" r# r� � s ��z EccXPoint.is_point_at_infinityc C s t d| j�S )r� N)rN rR r5 r" r" r# r� � s zEccXPoint.point_at_infinityc C s` | � � }t|�}| jjj}|t|�t|�| j�� �}|dkr"t d��|r*t d| ��t t |��S )N� z)No X coordinate for the point at infinityz'Error %d while getting X of an EC point) rb r� r^ rd �get_xr r rg rM rI r r )r1 rm rn r� rq r" r" r# rk � s � z EccXPoint.xc C r� r� r� r5 r" r" r# rb � r� zEccXPoint.size_in_bytesc C r� r� r� r5 r" r" r# r� � r� zEccXPoint.size_in_bitsc C r� r� r� r� r" r" r# r� � r� zEccXPoint.__imul__c C r� r� r� r� r" r" r# r� � r� zEccXPoint.__mul__c C r� r. r� r� r" r" r# r� � r4 zEccXPoint.__rmul__N)r r r r� rr ry r~ r� r� r� r� rk rb r� r� r� r� r" r" r" r# rN S s / rN )rV ZCryptodome.Util.numberr r ZCryptodome.Util._raw_apir r r r r r ZCryptodome.Math.Numbersr ZCryptodome.Random.randomr �objectr r$ r] rP rN r" r" r" r# �<module> s f Q
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