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pem.cpython-39.pyc
a ���g � @ s� d Z ddlmZmZmZmZ ddlZddlZddlZddl m Z ddl m Z mZmZ ejdk rlddlmZ n dd lmZ d d � Zdd d �Zdd� Zddd�ZdS )zq Encoding DER to PEM and decoding PEM to DER. Exports the following items: - armor() - detect() - unarmor() � )�unicode_literals�division�absolute_import�print_functionN� )�unwrap)� type_name�str_cls�byte_cls)� )�StringIO)�BytesIOc C s8 t | t�s ttdt| ����| �d�dkp6| �d�dkS )z� Detect if a byte string seems to contain a PEM-encoded block :param byte_string: A byte string to look through :return: A boolean, indicating if a PEM-encoded block is contained in the byte string zC byte_string must be a byte string, not %s s -----BEGIN���s ---- BEGIN)� isinstancer � TypeErrorr � _type_name�find)Z byte_string� r �?/opt/nydus/tmp/pip-target-mke_irhy/lib/python/asn1crypto/pem.py�detect s �r c C s, t |t�s ttdt|� ���t | t�s:ttdt| ����| �� �d�} t� }|� d� |� | � |� d� |r�|D ]<}|� |�d�� |� d� |� || �d�� |� d� qt|� d� t � |�}t |�}d}||k �r|� |||d � � |� d� |d 7 }q�|� d � |� | � |� d� |� � S ) a Armors a DER-encoded byte string in PEM :param type_name: A unicode string that will be capitalized and placed in the header and footer of the block. E.g. "CERTIFICATE", "PRIVATE KEY", etc. This will appear as "-----BEGIN CERTIFICATE-----" and "-----END CERTIFICATE-----". :param der_bytes: A byte string to be armored :param headers: An OrderedDict of the header lines to write after the BEGIN line :return: A byte string of the PEM block zA der_bytes must be a byte string, not %s zD type_name must be a unicode string, not %s �asciis -----BEGIN s ----- s : � r �@ s -----END )r r r r r r �upper�encoder �write�base64� b64encode�len�getvalue)r � der_bytes�headers�output�keyZ b64_bytesZb64_len�ir r r �armor2 sD �� � r% c c s0 t | t�s ttdt| ����d}i }d}d}d}d}| �d�D ]�}|dkrLq>|dkr�t�d|�}|sfq>|�d�� d�}d }d }q>|d kr�|� d �d kr�d }n(|� d�} | � dd�\} } | � � || < q>|d kr>|dd� dv �r t �|�} ||| fV d}i }d}d}d }q>||7 }q>|�r |�s,ttd���dS )ax Convert a PEM-encoded byte string into one or more DER-encoded byte strings :param pem_bytes: A byte string of the PEM-encoded data :raises: ValueError - when the pem_bytes do not appear to be PEM-encoded bytes :return: A generator of 3-element tuples in the format: (object_type, headers, der_bytes). The object_type is a unicode string of what is between "-----BEGIN " and "-----". Examples include: "CERTIFICATE", "PUBLIC KEY", "PRIVATE KEY". The headers is a dict containing any lines in the form "Name: Value" that are right after the begin line. zA pem_bytes must be a byte string, not %s Ztrash� NFs1 ^(?:---- |-----)BEGIN ([A-Z0-9 ]+)(?: ----|-----)r r Tr! � :r �body�:r � )s -----s ---- z| pem_bytes does not appear to contain PEM-encoded data - no BEGIN/END combination found )r r r r r � splitlines�re�match�group�decoder �split�stripr � b64decode� ValueError) � pem_bytes�stater! Z base64_dataZ object_typeZ found_startZ found_end�lineZtype_name_matchZ decoded_line�name�valuer r r r �_unarmorp sX � �r9 Fc C s t | �}|st|�S |S )a� Convert a PEM-encoded byte string into a DER-encoded byte string :param pem_bytes: A byte string of the PEM-encoded data :param multiple: If True, function will return a generator :raises: ValueError - when the pem_bytes do not appear to be PEM-encoded bytes :return: A 3-element tuple (object_name, headers, der_bytes). The object_name is a unicode string of what is between "-----BEGIN " and "-----". Examples include: "CERTIFICATE", "PUBLIC KEY", "PRIVATE KEY". The headers is a dict containing any lines in the form "Name: Value" that are right after the begin line. )r9 �next)r4 �multiple� generatorr r r �unarmor� s r= )N)F)�__doc__� __future__r r r r r r, �sys�_errorsr �_typesr r r r � version_info� cStringIOr r �ior r% r9 r= r r r r �<module> s >T