OwlCyberSecurity - MANAGER
Edit File: crypto_sign.cpython-38.pyc
U �֫[�% � @ s� d dl mZmZmZ d dlmZ d dlmZm Z d dl m Z e � � Z e �� d Ze �� Ze �� Ze �� Ze �� Zdd� Zdd � Zd d � Zd d � Zdd� Zdd� Z G dd� de �Z dd� Z dd� Z dd� Z!dS )� )�absolute_import�division�print_function)� exceptions)�ffi�lib)�ensure� c C s` t �dt�} t �dt�}t�| |�}t|dkdtjd� t � | t�dd� t � |t�dd� fS )zu Returns a randomly generated public key and secret key. :rtype: (bytes(public_key), bytes(secret_key)) �unsigned char[]r �Unexpected library error�ZraisingN) r �new�crypto_sign_PUBLICKEYBYTES�crypto_sign_SECRETKEYBYTESr �crypto_sign_keypairr �exc� RuntimeError�buffer)�pk�sk�rc� r �;/usr/lib/python3/dist-packages/nacl/bindings/crypto_sign.pyr ! s ��r c C sx t | �tkrt�d��t�dt�}t�dt�}t� ||| �}t |dkdtj d� t� |t�dd� t� |t�dd� fS )z� Computes and returns the public key and secret key using the seed ``seed``. :param seed: bytes :rtype: (bytes(public_key), bytes(secret_key)) z Invalid seedr r r r N) �len�crypto_sign_SEEDBYTESr � ValueErrorr r r r r �crypto_sign_seed_keypairr r r )Zseedr r r r r r r 5 s ��r c C s` t �dt| �t �}t �d�}t�||| t| �|�}t|dkdtjd� t � ||d �dd� S )z� Signs the message ``message`` using the secret key ``sk`` and returns the signed message. :param message: bytes :param sk: bytes :rtype: bytes r �unsigned long long *r r r N) r r r �crypto_sign_BYTESr � crypto_signr r r r )�messager �signedZ signed_lenr r r r r M s �r c C sV t �dt| ��}t �d�}t�||| t| �|�dkr>t�d��t �||d �dd� S )z� Verifies the signature of the signed message ``signed`` using the public key ``pk`` and returns the unsigned message. :param signed: bytes :param pk: bytes :rtype: bytes r r r � Signature was forged or corruptN)r r r r �crypto_sign_openr �BadSignatureErrorr )r! r r Z message_lenr r r r# a s �� r# c C sZ t | �tkrt�d��t}t�d|�}t�|| �}t |dkdtj d� t� ||�dd� S )a Converts a public Ed25519 key (encoded as bytes ``public_key_bytes``) to a public Curve25519 key as bytes. Raises a ValueError if ``public_key_bytes`` is not of length ``crypto_sign_PUBLICKEYBYTES`` :param public_key_bytes: bytes :rtype: bytes �Invalid curve public keyr r r r N) r r r r � crypto_sign_curve25519_BYTESr r r �$crypto_sign_ed25519_pk_to_curve25519r r r )Zpublic_key_bytesZcurve_public_key_lenZcurve_public_keyr r r r r' t s ��r' c C sZ t | �tkrt�d��t}t�d|�}t�|| �}t |dkdtj d� t� ||�dd� S )a Converts a secret Ed25519 key (encoded as bytes ``secret_key_bytes``) to a secret Curve25519 key as bytes. Raises a ValueError if ``secret_key_bytes``is not of length ``crypto_sign_SECRETKEYBYTES`` :param public_key_bytes: bytes :rtype: bytes r% r r r r N) r r r r r& r r r �$crypto_sign_ed25519_sk_to_curve25519r r r )Zsecret_key_bytesZcurve_secret_key_lenZcurve_secret_keyr r r r r( � s ��r( c @ s e Zd ZdZdgZdd� ZdS )�crypto_sign_ed25519ph_statezO State object wrapping the sha-512 state used in ed25519ph computation �statec C s2 t �dt�| _t�| j�}t|dkdtjd� d S )Nr r r r ) r r � crypto_sign_ed25519ph_STATEBYTESr* r Zcrypto_sign_ed25519ph_initr r r )�selfr r r r �__init__� s � �z$crypto_sign_ed25519ph_state.__init__N)�__name__� __module__� __qualname__�__doc__� __slots__r- r r r r r) � s r) c C sX t t| t�dtjd� t t|t�dtjd� t�| j|t |��}t |dkdtj d� dS )z� Update the hash state wrapped in edph :param edph: the ed25519ph state being updated :type edph: crypto_sign_ed25519ph_state :param pmsg: the partial message :type pmsg: bytes :rtype: None �/edph parameter must be a ed25519ph_state objectr z%pmsg parameter must be a bytes objectr r N) r � isinstancer) r � TypeError�bytesr � crypto_sign_ed25519ph_updater* r r )�edphZpmsgr r r r r7 � s � ���r7 c C s� t t| t�dtjd� t t|t�dtjd� t t|�tkd�t�tjd� t � dt �}t � | j|t j|�}t |dkdtjd� t �|t �dd� S ) aR Create a signature for the data hashed in edph using the secret key sk :param edph: the ed25519ph state for the data being signed :type edph: crypto_sign_ed25519ph_state :param sk: the ed25519 secret part of the signing key :type sk: bytes :return: ed25519ph signature :rtype: bytes r3 r z+secret key parameter must be a bytes objectz!secret key must be {0} bytes longr r r N)r r4 r) r r5 r6 r r �formatr r r r �"crypto_sign_ed25519ph_final_creater* ZNULLr r )r8 r � signaturer r r r r: � s2 � � �� ��r: c C s� t t| t�dtjd� t t|t�dtjd� t t|�tkd�t�tjd� t t|t�dtjd� t t|�t kd�t �tjd� t � | j ||�}|dkr�t� d��d S ) a� Verify a prehashed signature using the public key pk :param edph: the ed25519ph state for the data being verified :type edph: crypto_sign_ed25519ph_state :param signature: the signature being verified :type signature: bytes :param pk: the ed25519 public part of the signing key :type pk: bytes :return: True if the signature is valid :rtype: boolean :raises exc.BadSignatureError: if the signature is not valid r3 r z*signature parameter must be a bytes objectz signature must be {0} bytes longz+public key parameter must be a bytes objectz!public key must be {0} bytes longr r" T)r r4 r) r r5 r6 r r r9 r r �"crypto_sign_ed25519ph_final_verifyr* r$ )r8 r; r r r r r r< � s> � � �� � ��� r< N)"Z __future__r r r Znaclr r Z nacl._sodiumr r Znacl.exceptionsr Zcrypto_sign_bytesr Zcrypto_sign_secretkeybytesr Zcrypto_sign_publickeybytesr r Zcrypto_box_secretkeybytesr& Z crypto_sign_ed25519ph_statebytesr+ r r r r# r' r( �objectr) r7 r: r< r r r r �<module> s& $