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o ;j� � @ s` d dl T d dlmZmZmZmZ d dlmZmZm Z ddgZ ddde� dfdd�Z d dd�Z dS ) � )�*)�DerNull� DerSequence� DerObjectId�DerOctetString)�PBES1�PBES2� PbesError�wrap�unwrapNc C s� |du r t t|�g�}nt t|�|g�}t d|t| �g�}|�� } |du r'| S |s-td��t|�}|du r7d}t�| ||||�S )a6 Wrap a private key into a PKCS#8 blob (clear or encrypted). Args: private_key (bytes): The private key encoded in binary form. The actual encoding is algorithm specific. In most cases, it is DER. key_oid (string): The object identifier (OID) of the private key to wrap. It is a dotted string, like ``'1.2.840.113549.1.1.1'`` (for RSA keys) or ``'1.2.840.10045.2.1'`` (for ECC keys). Keyword Args: passphrase (bytes or string): The secret passphrase from which the wrapping key is derived. Set it only if encryption is required. protection (string): The identifier of the algorithm to use for securely wrapping the key. Refer to :ref:`the encryption parameters<enc_params>` . The default value is ``'PBKDF2WithHMAC-SHA1AndDES-EDE3-CBC'``. prot_params (dictionary): Parameters for the key derivation function (KDF). Refer to :ref:`the encryption parameters<enc_params>` . key_params (DER object or None): The ``parameters`` field to use in the ``AlgorithmIdentifier`` SEQUENCE. If ``None``, no ``parameters`` field will be added. By default, the ASN.1 type ``NULL`` is used. randfunc (callable): Random number generation function; it should accept a single integer N and return a string of random data, N bytes long. If not specified, a new RNG will be instantiated from :mod:`Cryptodome.Random`. Returns: bytes: The PKCS#8-wrapped private key (possibly encrypted). Nr zEmpty passphrasez"PBKDF2WithHMAC-SHA1AndDES-EDE3-CBC)r r r �encode� ValueError�tobytesr Zencrypt) � private_keyZkey_oid� passphraseZ protectionZ prot_paramsZ key_paramsZrandfunc� algorithm�pk_infoZ pk_info_der� r �G/opt/saltstack/salt/lib/python3.10/site-packages/Cryptodome/IO/PKCS8.pyr 2 s& 5��c C s� |durrt |�}d}z t�| |�} d}W n" ty, } z dt|� }W Y d}~nd}~w ty6 d}Y nw |sjz t�| |�} d}W n& ty] } z|dt|� 7 }W Y d}~nd}~w tyi |d7 }Y nw |srtd| ��t� j| d d �}t |�d kr�|s�td ��|d d kr�t |�dvr�td��n|d dkr�t |�dvr�td��ntd��t� j|d dd �}t � �|d �j }t |�dkr�d}nz t � �|d � d}W n |d }Y t � �|d �j} || |fS )aN Unwrap a private key from a PKCS#8 blob (clear or encrypted). Args: p8_private_key (bytes): The private key wrapped into a PKCS#8 container, DER encoded. Keyword Args: passphrase (byte string or string): The passphrase to use to decrypt the blob (if it is encrypted). Return: A tuple containing #. the algorithm identifier of the wrapped key (OID, dotted string) #. the private key (bytes, DER encoded) #. the associated parameters (bytes, DER encoded) or ``None`` Raises: ValueError : if decoding fails NFTz PBES1[%s]zPBES1[Invalid]z ,PBES2[%s]z,PBES2[Invalid]zError decoding PKCS#8 (%s))� � � � )Z nr_elementsr z;Not a valid clear PKCS#8 structure (maybe it is encrypted?)r )r r z#Not a valid PrivateKeyInfo SEQUENCE� )r r r )r r )r r Zdecryptr �strr r r �decode�lenr �valuer r �payload) Zp8_private_keyr �found�eZ error_strr ZalgoZalgo_oidZ algo_paramsr r r r r � s^ � � � � � � )N) ZCryptodome.Util.py3compatZCryptodome.Util.asn1r r r r ZCryptodome.IO._PBESr r r �__all__r r r r r r �<module> s " �O
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