3 l�_4'�@s�ddlmZmZmZddlmZddlmZddlm Z m Z mZddlm Z ddlmZmZmZdd�Zd d �Zeje�Gdd�de��Zeje�Gd d�de��Zejej�Gdd�de��Zejej�Gdd�de��Zejej�Gdd�de��ZdS)�)�absolute_import�division�print_function)�utils)�InvalidSignature)�_calculate_digest_and_algorithm�_check_not_prehashed�_warn_sign_verify_deprecated)�hashes)�AsymmetricSignatureContext�AsymmetricVerificationContext�dsacCsx|jj|j�}|jjd|�}|jjd�}|jjd|t|�|||j�}|j|dk�|j|d�|jj|�d|d�S)Nzunsigned char[]zunsigned int *r�) �_libZDSA_size� _dsa_cdata�_ffi�newZDSA_sign�len�openssl_assert�buffer)�backend�private_key�dataZsig_buf_lenZsig_bufZbuflen�res�r�/usr/lib64/python3.6/dsa.py� _dsa_sig_signsrcCs8|jjd|t|�|t|�|j�}|dkr4|j�t�dS)Nrr)rZ DSA_verifyrrZ_consume_errorsr)r� public_key� signaturerrrrr�_dsa_sig_verify&s rc@s$eZdZdd�Zdd�Zdd�ZdS)�_DSAVerificationContextcCs.||_||_||_||_tj|j|j�|_dS)N)�_backend�_public_key� _signature� _algorithmr �Hash� _hash_ctx)�selfrrr� algorithmrrr�__init__4s z _DSAVerificationContext.__init__cCs|jj|�dS)N)r&�update)r'rrrrr*<sz_DSAVerificationContext.updatecCs"|jj�}t|j|j|j|�dS)N)r&�finalizerr!r"r#)r'Zdata_to_verifyrrr�verify?s z_DSAVerificationContext.verifyN)�__name__� __module__�__qualname__r)r*r,rrrrr 2sr c@s$eZdZdd�Zdd�Zdd�ZdS)�_DSASignatureContextcCs(||_||_||_tj|j|j�|_dS)N)r!�_private_keyr$r r%r&)r'rrr(rrrr)Isz_DSASignatureContext.__init__cCs|jj|�dS)N)r&r*)r'rrrrr*Osz_DSASignatureContext.updatecCs|jj�}t|j|j|�S)N)r&r+rr!r1)r'Zdata_to_signrrrr+Rs z_DSASignatureContext.finalizeN)r-r.r/r)r*r+rrrrr0Gsr0c@s$eZdZdd�Zdd�Zdd�ZdS)�_DSAParameterscCs||_||_dS)N)r!r)r'r� dsa_cdatarrrr)Ysz_DSAParameters.__init__cCs�|jjjd�}|jjjd�}|jjjd�}|jjj|j|||�|jj|d|jjjk�|jj|d|jjjk�|jj|d|jjjk�tj |jj |d�|jj |d�|jj |d�d�S)Nz BIGNUM **r)�p�q�g)r!rrr�DSA_get0_pqgrr�NULLr �DSAParameterNumbers� _bn_to_int)r'r4r5r6rrr�parameter_numbers]sz _DSAParameters.parameter_numberscCs|jj|�S)N)r!Zgenerate_dsa_private_key)r'rrr�generate_private_keyksz#_DSAParameters.generate_private_keyN)r-r.r/r)r;r<rrrrr2Wsr2c@sNeZdZdd�Zejd�Zdd�Zdd�Zdd �Z d d�Z dd �Zdd�ZdS)�_DSAPrivateKeycCsp||_||_||_|jjjd�}|jjj|||jjj|jjj�|jj|d|jjk�|jjj |d�|_ dS)Nz BIGNUM **r)r!r� _evp_pkeyrrrr7r8r�BN_num_bits� _key_size)r'rr3�evp_pkeyr4rrrr)qsz_DSAPrivateKey.__init__r@cCst�t|�t|j||�S)N)r rr0r!)r'�signature_algorithmrrr�signersz_DSAPrivateKey.signercCsR|jjjd�}|jjjd�}|jjjd�}|jjjd�}|jjjd�}|jjj|j|||�|jj|d|jjjk�|jj|d|jjjk�|jj|d|jjjk�|jjj|j||�|jj|d|jjjk�|jj|d|jjjk�t j t jt j|jj |d�|jj |d�|jj |d�d�|jj |d�d�|jj |d�d�S)Nz BIGNUM **r)r4r5r6)r;�y)�public_numbers�x)r!rrrr7rrr8�DSA_get0_keyr ZDSAPrivateNumbers�DSAPublicNumbersr9r:)r'r4r5r6�pub_keyZpriv_keyrrr�private_numbers�s(z_DSAPrivateKey.private_numberscCs�|jjj|j�}|jj||jjjk�|jjj||jjj�}|jjj d�}|jjj |j||jjj�|jj|d|jjjk�|jjj|d�}|jjj|||jjj�}|jj|dk�|jj |�}t|j||�S)Nz BIGNUM **rr)r!r� DSAparams_duprrrr8�gc�DSA_freerrGZBN_dupZDSA_set0_keyZ_dsa_cdata_to_evp_pkey� _DSAPublicKey)r'r3rIZpub_key_duprrArrrr�sz_DSAPrivateKey.public_keycCsH|jjj|j�}|jj||jjjk�|jjj||jjj�}t |j|�S)N) r!rrKrrrr8rLrMr2)r'r3rrr� parameters�s z_DSAPrivateKey.parameterscCs|jj|||||j|j�S)N)r!Z_private_key_bytesr>r)r'�encoding�formatZencryption_algorithmrrr� private_bytes�sz_DSAPrivateKey.private_bytescCs t|j||�\}}t|j||�S)N)rr!r)r'rr(rrr�sign�sz_DSAPrivateKey.signN) r-r.r/r)r�read_only_property�key_sizerCrJrrOrRrSrrrrr=os r=c@sFeZdZdd�Zejd�Zdd�Zdd�Zdd �Z d d�Z dd �ZdS)rNcCsp||_||_||_|jjjd�}|jjj|||jjj|jjj�|jj|d|jjk�|jjj |d�|_ dS)Nz BIGNUM **r)r!rr>rrrr7r8rr?r@)r'rr3rAr4rrrr)�sz_DSAPublicKey.__init__r@cCs*t�tjd|�t|�t|j|||�S)Nr)r r�_check_bytesrr r!)r'rrBrrr�verifier�s z_DSAPublicKey.verifiercCs|jjjd�}|jjjd�}|jjjd�}|jjjd�}|jjj|j|||�|jj|d|jjjk�|jj|d|jjjk�|jj|d|jjjk�|jjj|j||jjj�|jj|d|jjjk�t j t j|jj|d�|jj|d�|jj|d�d�|jj|d�d�S)Nz BIGNUM **r)r4r5r6)r;rD) r!rrrr7rrr8rGr rHr9r:)r'r4r5r6rIrrrrE�s"z_DSAPublicKey.public_numberscCs2|jjj|j�}|jjj||jjj�}t|j|�S)N)r!rrKrrrLrMr2)r'r3rrrrO�sz_DSAPublicKey.parameterscCs|jj||||jd�S)N)r!Z_public_key_bytesr>)r'rPrQrrr�public_bytes�sz_DSAPublicKey.public_bytescCs"t|j||�\}}t|j|||�S)N)rr!r)r'rrr(rrrr,sz_DSAPublicKey.verifyN)r-r.r/r)rrTrUrWrErOrXr,rrrrrN�s rNN)Z __future__rrrZcryptographyrZcryptography.exceptionsrZ*cryptography.hazmat.backends.openssl.utilsrrr Zcryptography.hazmat.primitivesr Z)cryptography.hazmat.primitives.asymmetricrrr rrZregister_interface�objectr r0ZDSAParametersWithNumbersr2ZDSAPrivateKeyWithSerializationr=ZDSAPublicKeyWithSerializationrNrrrr�s"Y