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python38
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lib64
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python3.8
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nacl
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bindings
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U v��f�' � @ s| U d dl mZ d dlmZ d dlmZmZ d dlm Z ddgZ e� � Z e ed< e�� Ze ed< e�� Ze ed < e�� Ze ed < e�� Ze ed < e�� Ze ed < e�� Ze ed < e�� Z e ed< ee e f d�dd�Z e ee e f d�dd�Z e e e e e d�dd�Z e e e e e d�dd�Z!e e e d�dd�Z"e e e e d �d d �Z#e e e e d �d d!�Z$e e e d"�d#d$�Z%e e e e d%�d&d'�Z&d(S ))� )�Tuple)� exceptions)�ffi�lib)�ensure�crypto_box_keypair� crypto_box�crypto_box_SECRETKEYBYTES�crypto_box_PUBLICKEYBYTES�crypto_box_SEEDBYTES�crypto_box_NONCEBYTES�crypto_box_ZEROBYTES�crypto_box_BOXZEROBYTES�crypto_box_BEFORENMBYTES�crypto_box_SEALBYTES)�returnc C s` t �dt�} t �dt�}t�| |�}t|dkdtjd� t � | t�dd� t � |t�dd� fS )zq Returns a randomly generated public and secret key. :rtype: (bytes(public_key), bytes(secret_key)) �unsigned char[]r �Unexpected library error�ZraisingN) r �newr r r r r �exc� RuntimeError�buffer)�pk�sk�rc� r �K/opt/alt/python38/lib64/python3.8/site-packages/nacl/bindings/crypto_box.pyr " s �)�seedr c C s� t t| t�dtd� t| �tkr*t�d��t� dt �}t� dt �}t � ||| �}t |dkdtjd� t�|t �dd� t�|t �dd� fS )a Returns a (public, secret) keypair deterministically generated from an input ``seed``. .. warning:: The seed **must** be high-entropy; therefore, its generator **must** be a cryptographic quality random function like, for example, :func:`~nacl.utils.random`. .. warning:: The seed **must** be protected and remain secret. Anyone who knows the seed is really in possession of the corresponding PrivateKey. :param seed: bytes :rtype: (bytes(public_key), bytes(secret_key)) zseed must be bytesr z Invalid seedr r r N)r � isinstance�bytes� TypeError�lenr r � ValueErrorr r r r r �crypto_box_seed_keypairr r )r r r r r r r r$ 4 s �r$ )�message�noncer r r c C s� t |�tkrt�d��t |�tkr,t�d��t |�tkrBt�d��dt | }t�dt |��}t � ||t |�|||�}t |dkdtj d� t� |t |��td � S ) z� Encrypts and returns a message ``message`` using the secret key ``sk``, public key ``pk``, and the nonce ``nonce``. :param message: bytes :param nonce: bytes :param pk: bytes :param sk: bytes :rtype: bytes �Invalid nonce size�Invalid public key�Invalid secret key� r r r r N)r" r r r# r r r r r r r r r r r )r% r& r r �padded� ciphertextr r r r r V s )r, r& r r r c C s� t |�tkrt�d��t |�tkr,t�d��t |�tkrBt�d��dt | }t�dt |��}t � ||t |�|||�}t |dkdtj d� t� |t |��td � S ) a Decrypts and returns an encrypted message ``ciphertext``, using the secret key ``sk``, public key ``pk``, and the nonce ``nonce``. :param ciphertext: bytes :param nonce: bytes :param pk: bytes :param sk: bytes :rtype: bytes r' r( r) r* r r �/An error occurred trying to decrypt the messager N)r" r r r# r r r r r r �crypto_box_openr � CryptoErrorr r )r, r& r r r+ � plaintext�resr r r r. s s �r. )r r r c C sn t | �tkrt�d��t |�tkr,t�d��t�dt�}t� || |�}t |dkdtj d� t� |t�dd� S )a Computes and returns the shared key for the public key ``pk`` and the secret key ``sk``. This can be used to speed up operations where the same set of keys is going to be used multiple times. :param pk: bytes :param sk: bytes :rtype: bytes r( r) r r r r N) r" r r r# r r r r r �crypto_box_beforenmr r r )r r �kr r r r r2 � s r2 )r% r& r3 r c C s� t |�tkrt�d��t |�tkr,t�d��dt | }t�dt |��}t� ||t |�||�}t |dkdtj d� t� |t |��t d� S ) z� Encrypts and returns the message ``message`` using the shared key ``k`` and the nonce ``nonce``. :param message: bytes :param nonce: bytes :param k: bytes :rtype: bytes � Invalid nonce�Invalid shared keyr* r r r r N)r" r r r# r r r r r �crypto_box_afternmr r r r )r% r& r3 r+ r, r r r r r6 � s r6 )r, r& r3 r c C s� t |�tkrt�d��t |�tkr,t�d��dt | }t�dt |��}t� ||t |�||�}t |dkdtj d� t� |t |��t d� S ) z� Decrypts and returns the encrypted message ``ciphertext``, using the shared key ``k`` and the nonce ``nonce``. :param ciphertext: bytes :param nonce: bytes :param k: bytes :rtype: bytes r4 r5 r* r r r- r N)r" r r r# r r r r r �crypto_box_open_afternmr r/ r r )r, r& r3 r+ r0 r1 r r r r7 � s �r7 )r% r r c C s� t t| t�dtd� t t|t�dtd� t|�tkr>t�d��t| �}t| }t � d|�}t � || ||�}t |dkdtj d� t �||�dd� S ) a� Encrypts and returns a message ``message`` using an ephemeral secret key and the public key ``pk``. The ephemeral public key, which is embedded in the sealed box, is also used, in combination with ``pk``, to derive the nonce needed for the underlying box construct. :param message: bytes :param pk: bytes :rtype: bytes .. versionadded:: 1.2 zinput message must be bytesr �public key must be bytesr( r r r N)r r r r! r" r r r# r r r r �crypto_box_sealr r )r% r �_mlen�_clenr, r r r r r9 � s$ � � r9 )r, r r r c C s� t t| t�dtd� t t|t�dtd� t t|t�dtd� t|�tkrRt�d��t|�tkrht�d��t| �}t |t kd� t �tjd� |t }t � dt d |��}t�|| |||�}t |d kd tjd� t �||�d d � S ) a� Decrypts and returns an encrypted message ``ciphertext``, using the recipent's secret key ``sk`` and the sender's ephemeral public key embedded in the sealed box. The box contruct nonce is derived from the recipient's public key ``pk`` and the sender's public key. :param ciphertext: bytes :param pk: bytes :param sk: bytes :rtype: bytes .. versionadded:: 1.2 z input ciphertext must be bytesr r8 zsecret key must be bytesr( r) z)Input cyphertext must be at least {} longr � r r- N)r r r r! r" r r r# r r �formatr r �maxr �crypto_box_seal_openr/ r )r, r r r; r: r0 r1 r r r r? sH � � � ���r? N)'�typingr Znaclr r Z nacl._sodiumr r Znacl.exceptionsr �__all__Zcrypto_box_secretkeybytesr �int�__annotations__Zcrypto_box_publickeybytesr Zcrypto_box_seedbytesr Zcrypto_box_noncebytesr Zcrypto_box_zerobytesr Zcrypto_box_boxzerobytesr Zcrypto_box_beforenmbytesr Zcrypto_box_sealbytesr r r r$ r r. r2 r6 r7 r9 r? r r r r �<module> s> " � # � &
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