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usr
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lib64
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python3.9
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site-packages
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cryptography
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hazmat
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backends
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openssl
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__pycache__
📍 /usr/lib64/python3.9/site-packages/cryptography/hazmat/backends/openssl/__pycache__
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Editing: backend.cpython-39.opt-1.pyc
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Ng @rS r� ) rU rq �to_bytesr� � bit_lengthrW Z BN_bin2bnr� rm )rf �numr� ZbinaryZbn_ptrrP rP rQ � _int_to_bn� s zBackend._int_to_bnc C s� t �||� | j�� }| �|| jjk� | j�|| jj�}| � |�}| j�|| jj �}| j� |||| jj�}| �|dk� | � |�}t | ||| j�S rw )r- Z_verify_rsa_parametersrW �RSA_newrm rU rq �gc�RSA_freer� �BN_freeZRSA_generate_key_ex�_rsa_cdata_to_evp_pkeyr rX )rf �public_exponent�key_size� rsa_cdatar� r| �evp_pkeyrP rP rQ �generate_rsa_private_key� s � �z Backend.generate_rsa_private_keyc C s |dko|d@ dko|dkS )N� rS r i rP )rf r� r� rP rP rQ �!generate_rsa_parameters_supported� s ��z)Backend.generate_rsa_parameters_supportedc C s6 t �|j|j|j|j|j|j|jj |jj � | j � � }| � || jjk� | j�|| j j�}| �|j�}| �|j�}| �|j�}| �|j�}| �|j�}| �|j�}| �|jj �} | �|jj �} | j �|||�} | � | dk� | j �|| | |�} | � | dk� | j �||||�} | � | dk� | �|�} t| || | j�S rw )r- Z _check_private_key_components�p�q�d�dmp1�dmq1�iqmp�public_numbersr{ �nrW r� rm rU rq r� r� r� ZRSA_set0_factors� RSA_set0_keyZRSA_set0_crt_paramsr� r rX ) rf �numbersr� r� r� r� r� r� r� r{ r� r| r� rP rP rQ �load_rsa_private_numbers� s> � �z Backend.load_rsa_private_numbersc C s� t �|j|j� | j�� }| �|| jjk� | j� || jj �}| � |j�}| � |j�}| j� |||| jj�}| �|dk� | � |�}t| ||�S rw )r- Z _check_public_key_componentsr{ r� rW r� rm rU rq r� r� r� r� r� r! )rf r� r� r{ r� r| r� rP rP rQ �load_rsa_public_numbers s z Backend.load_rsa_public_numbersc C s2 | j �� }| �|| jjk� | j�|| j j�}|S ru )rW Z EVP_PKEY_newrm rU rq r� � EVP_PKEY_free�rf r� rP rP rQ �_create_evp_pkey_gc s zBackend._create_evp_pkey_gcc C s( | � � }| j�||�}| �|dk� |S rw )r� rW ZEVP_PKEY_set1_RSArm )rf r� r� r| rP rP rQ r� s z Backend._rsa_cdata_to_evp_pkeyc C sH | j �|�}| j�|t|��}| �|| j jk� t| j �|| jj �|�S )z� Return a _MemoryBIO namedtuple of (BIO, char*). The char* is the storage for the BIO and it must stay alive until the BIO is finished with. ) rU r� rW ZBIO_new_mem_bufr� rm rq rJ r� �BIO_free)rf �data�data_ptrrK rP rP rQ � _bytes_to_bio# s zBackend._bytes_to_bioc C sP | j �� }| �|| jjk� | j �|�}| �|| jjk� | j�|| j j�}|S )z. Creates an empty memory BIO. )rW Z BIO_s_memrm rU rq ZBIO_newr� r� )rf Z bio_methodrK rP rP rQ �_create_mem_bio_gc0 s zBackend._create_mem_bio_gcc C s\ | j �d�}| j�||�}| �|dk� | �|d | j jk� | j �|d |�dd� }|S )zE Reads a memory BIO. This only works on memory BIOs. zchar **r N)rU r� rW ZBIO_get_mem_datarm rq r� )rf rK r� Zbuf_len�bio_datarP rP rQ � _read_mem_bio; s zBackend._read_mem_bioc C s� | j �|�}|| j jkrX| j �|�}| �|| jjk� | j�|| j j�}t | ||| j �S || j j kr�| j � |�}| �|| jjk� | j�|| j j �}t| ||�S || j jkr�| j �|�}| �|| jjk� | j�|| j j�}t| ||�S || jv �r0| j �|�}| �|| jjk� | j�|| j j�}t| ||�S |t| j dd�k�rNt| |�S |t| j dd�k�rlt| |�S |t| j dd�k�r�t| |�S |t| j dd�k�r�t| |�S t d��dS )zd Return the appropriate type of PrivateKey given an evp_pkey cdata pointer. �EVP_PKEY_ED25519N� EVP_PKEY_X448�EVP_PKEY_X25519�EVP_PKEY_ED448�Unsupported key type.) rW � EVP_PKEY_id� EVP_PKEY_RSA�EVP_PKEY_get1_RSArm rU rq r� r� r rX � EVP_PKEY_DSA�EVP_PKEY_get1_DSA�DSA_freer � EVP_PKEY_EC�EVP_PKEY_get1_EC_KEY� EC_KEY_freer rb �EVP_PKEY_get1_DH�DH_freer rr r r$ r" r r �rf r� �key_typer� � dsa_cdata�ec_cdata�dh_cdatarP rP rQ �_evp_pkey_to_private_keyF s@ � z Backend._evp_pkey_to_private_keyc C s� | j �|�}|| j jkrT| j �|�}| �|| jjk� | j�|| j j�}t | ||�S || j j kr�| j � |�}| �|| jjk� | j�|| j j �}t | ||�S || j jkr�| j �|�}| �|| jjk� | j�|| j j�}t| ||�S || jv �r,| j �|�}| �|| jjk� | j�|| j j�}t| ||�S |t| j dd�k�rJt| |�S |t| j dd�k�rht| |�S |t| j dd�k�r�t| |�S |t| j dd�k�r�t| |�S td��dS )zc Return the appropriate type of PublicKey given an evp_pkey cdata pointer. r� Nr� r� r� r� ) rW r� r� r� rm rU rq r� r� r! r� r� r� r r� r� r� r rb r� r� r rr r r% r# r r r� rP rP rQ �_evp_pkey_to_public_keys s< z Backend._evp_pkey_to_public_keyc C s6 | j jr&t|tjtjtjtjtjf�S t|tj�S d S ru ) rW Z Cryptography_HAS_RSA_OAEP_MDr� r' r� �SHA224�SHA256�SHA384�SHA512r� rP rP rQ �_oaep_hash_supported� s �� z Backend._oaep_hash_supportedc C s� t |t�rdS t |t�rNt |jt�rN| jr>t |jjtj�r>dS | � |jj�S nXt |t �r�t |jt�r�| � |jj�o�| � |j�o�|j d u p�t |j �dkp�| jjdkS dS d S )NTr rS F)r� r0 r1 Z_mgfr. rZ Z _algorithmr' r� r� r/ r Z_labelr� rW Z Cryptography_HAS_RSA_OAEP_LABEL)rf ZpaddingrP rP rQ �rsa_padding_supported� s � � � z Backend.rsa_padding_supportedc C s~ |dvrt d��| j�� }| �|| jjk� | j�|| jj�}| j�||| jjd| jj| jj| jj�}| �|dk� t | |�S )N)i rR i i z0Key size must be 1024, 2048, 3072, or 4096 bits.r rS ) r� rW �DSA_newrm rU rq r� r� ZDSA_generate_parameters_exr )rf r� �ctxr| rP rP rQ �generate_dsa_parameters� s$ � � z Backend.generate_dsa_parametersc C sT | j �|j�}| �|| jjk� | j�|| j j�}| j �|� | � |�}t | ||�S ru ) rW Z DSAparams_dupZ _dsa_cdatarm rU rq r� r� ZDSA_generate_key�_dsa_cdata_to_evp_pkeyr )rf � parametersr r� rP rP rQ �generate_dsa_private_key� s z Backend.generate_dsa_private_keyc C s | � |�}| �|�S ru )r r )rf r� r rP rP rQ �'generate_dsa_private_key_and_parameters� s z/Backend.generate_dsa_private_key_and_parametersc C sB | j �||||�}| �|dk� | j �|||�}| �|dk� d S rw )rW � DSA_set0_pqgrm Z DSA_set0_key)rf r� r� r� �g�pub_key�priv_keyr| rP rP rQ �_dsa_cdata_set_values� s z Backend._dsa_cdata_set_valuesc C s� t �|� |jj}| j�� }| �|| jjk� | j� || jj �}| � |j �}| � |j �}| � |j�}| � |jj�}| � |j�}| �||||||� | �|�} t| || �S ru )r* Z_check_dsa_private_numbersr� �parameter_numbersrW r rm rU rq r� r� r� r� r� r �y�xr r r ) rf r� r r� r� r� r r r r� rP rP rQ �load_dsa_private_numbers� s z Backend.load_dsa_private_numbersc C s� t �|j� | j�� }| �|| jjk� | j�|| jj �}| � |jj �}| � |jj �}| � |jj �}| � |j�}| jj}| �||||||� | �|�}t| ||�S ru )r* �_check_dsa_parametersr rW r rm rU rq r� r� r� r� r� r r r r r ) rf r� r� r� r� r r r r� rP rP rQ �load_dsa_public_numbers s z Backend.load_dsa_public_numbersc C s� t �|� | j�� }| �|| jjk� | j�|| jj�}| � |j �}| � |j �}| � |j �}| j� ||||�}| �|dk� t| |�S rw )r* r rW r rm rU rq r� r� r� r� r� r r r )rf r� r� r� r� r r| rP rP rQ �load_dsa_parameter_numbers s z"Backend.load_dsa_parameter_numbersc C s( | � � }| j�||�}| �|dk� |S rw )r� rW ZEVP_PKEY_set1_DSArm )rf r� r� r| rP rP rQ r ! s z Backend._dsa_cdata_to_evp_pkey)�returnc C s | j S ru )rZ re rP rP rQ � dsa_supported' s zBackend.dsa_supported)r� r c C s | � � s dS | �|�S r� )r r� r� rP rP rQ �dsa_hash_supported* s zBackend.dsa_hash_supportedc C s dS r� rP )rf r� r� r rP rP rQ �dsa_parameters_supported/ s z Backend.dsa_parameters_supportedc C s | � |td|j ��S )N� )r� r< Z block_sizer� rP rP rQ �cmac_algorithm_supported2 s �z Backend.cmac_algorithm_supportedc C s t | |�S ru r r� rP rP rQ �create_cmac_ctx7 s zBackend.create_cmac_ctxc C s | � | jj| j||�S ru )� _load_keyrW ZPEM_read_bio_PrivateKeyr� )rf r� �passwordrP rP rQ �load_pem_private_key: s �z Backend.load_pem_private_keyc C s� | � |�}| j�|j| jj| jj| jj�}|| jjkrR| j�|| jj�}| �|�S | � � | j� |j�}| � |dk� | j� |j| jj| jj| jj�}|| jjkr�| j�|| jj �}| �|�}t| ||�S | �� d S rw )r� rW ZPEM_read_bio_PUBKEYrK rU rq r� r� r� r� � BIO_resetrm ZPEM_read_bio_RSAPublicKeyr� r� r! �_handle_key_loading_error�rf r� �mem_bior� r| r� rP rP rQ �load_pem_public_keyB s$ � � zBackend.load_pem_public_keyc C s^ | � |�}| j�|j| jj| jj| jj�}|| jjkrR| j�|| jj�}t| |�S | � � d S ru ) r� rW ZPEM_read_bio_DHparamsrK rU rq r� r� r r" )rf r� r$ r� rP rP rQ �load_pem_parameters[ s � zBackend.load_pem_parametersc C s> | � |�}| �||�}|r$| �|�S | �| jj| j||�S d S ru )r� �"_evp_pkey_from_der_traditional_keyr� r rW Zd2i_PKCS8PrivateKey_bio)rf r� r r� r� rP rP rQ �load_der_private_keyg s �z Backend.load_der_private_keyc C s^ | j �|j| jj�}|| jjkrN| �� | j�|| j j�}|d urJtd��|S | �� d S d S )N�4Password was given but private key is not encrypted.) rW �d2i_PrivateKey_biorK rU rq r� r� r� � TypeError)rf r� r r� rP rP rQ r' z s �z*Backend._evp_pkey_from_der_traditional_keyc C s� | � |�}| j�|j| jj�}|| jjkrF| j�|| jj�}| �|�S | � � | j� |j�}| � |dk� | j� |j| jj�}|| jjkr�| j�|| jj �}| �|�}t| ||�S | �� d S rw )r� rW Zd2i_PUBKEY_biorK rU rq r� r� r� r� r! rm Zd2i_RSAPublicKey_bior� r� r! r" r# rP rP rQ �load_der_public_key� s � zBackend.load_der_public_keyc C s� | � |�}| j�|j| jj�}|| jjkrF| j�|| jj�}t| |�S | jj r�| � � | j� |j�}| � |dk� | j� |j| jj�}|| jjkr�| j�|| jj�}t| |�S | �� d S rw )r� rW Zd2i_DHparams_biorK rU rq r� r� r rc r� r! rm Z Cryptography_d2i_DHxparams_bior" )rf r� r$ r� r| rP rP rQ �load_der_parameters� s � zBackend.load_der_parameters)�certr c C sT |� tjj�}| �|�}| j�|j| jj �}| � || jj k� | j� || jj �}|S ru ) � public_bytesr( �Encoding�DERr� rW Z d2i_X509_biorK rU rq rm r� � X509_free)rf r. r� r$ r rP rP rQ � _cert2ossl� s zBackend._cert2ossl)r r c C s4 | � � }| j�||�}| �|dk� t�| �|��S rw )r� rW Z i2d_X509_biorm � rust_x509Zload_der_x509_certificater� )rf r rK r| rP rP rQ � _ossl2cert� s zBackend._ossl2cert)�csrr c C sT |� tjj�}| �|�}| j�|j| jj �}| � || jj k� | j� || jj �}|S ru ) r/ r( r0 r1 r� rW Zd2i_X509_REQ_biorK rU rq rm r� Z X509_REQ_free)rf r6 r� r$ �x509_reqrP rP rQ � _csr2ossl� s zBackend._csr2ossl)r7 r c C s4 | � � }| j�||�}| �|dk� t�| �|��S rw )r� rW Zi2d_X509_REQ_biorm r4 Zload_der_x509_csrr� )rf r7 rK r| rP rP rQ � _ossl2csr� s zBackend._ossl2csr)�crlr c C sT |� tjj�}| �|�}| j�|j| jj �}| � || jj k� | j� || jj �}|S ru ) r/ r( r0 r1 r� rW Zd2i_X509_CRL_biorK rU rq rm r� Z X509_CRL_free)rf r: r� r$ �x509_crlrP rP rQ � _crl2ossl� s zBackend._crl2ossl)r; r c C s4 | � � }| j�||�}| �|dk� t�| �|��S rw )r� rW Zi2d_X509_CRL_biorm r4 Zload_der_x509_crlr� )rf r; rK r| rP rP rQ � _ossl2crl� s zBackend._ossl2crl)r: � public_keyr c C sJ t |tttf�std��| �|�}| j�||j�}|dkrF| � � dS dS )NzGExpecting one of DSAPublicKey, RSAPublicKey, or EllipticCurvePublicKey.rS FT) r� r r! r r+ r< rW ZX509_CRL_verify� _evp_pkeyr� )rf r: r> r; r| rP rP rQ �_crl_is_signature_valid� s ��� z Backend._crl_is_signature_validc C s` | � |�}| j�|�}| �|| jjk� | j�|| jj�}| j�||�}|dkr\| � � dS dS )NrS FT) r8 rW ZX509_REQ_get_pubkeyrm rU rq r� r� ZX509_REQ_verifyr� )rf r6 r7 Zpkeyr| rP rP rQ �_csr_is_signature_valid� s z Backend._csr_is_signature_validc C s" | j �|j|j�dkr td��d S )NrS zKeys do not correspond)rW Z EVP_PKEY_cmpr? r� )rf Zkey1Zkey2rP rP rQ �_check_keys_correspond s z Backend._check_keys_correspondc C s� | � |�}| j�d�}|d urFt�d|� | j�|�}||_t|�|_||j | jj | j� | j j d�|�}|| jj kr�|jdkr�| �� |jdkr�td��q�td�|jd ���n| �� | �� | j�|| j j�}|d ur�|jdkr�td ��||�S ) Nz CRYPTOGRAPHY_PASSWORD_DATA *r Z Cryptography_pem_password_cbr ���z3Password was not given but private key is encryptedzAPasswords longer than {} bytes are not supported by this backend.rS r) )r� rU r� r �_check_bytesliker� r r� r� rK rq Z addressofrW Z _original_lib�errorr� r+ r� rh �maxsizer" r� r� Zcalled) rf Zopenssl_read_funcZ convert_funcr� r r$ ZuserdataZ password_ptrr� rP rP rQ r sF �� ����zBackend._load_keyc s� � � � }|std��n�|d �� jj� jj�sf|d �� jj� jj�sf� jjrp|d �� jj � jj �rptd��n4t � fdd�|D ��r�td��nt � |�}td|��d S )Nz|Could not deserialize key data. 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The data may be in an incorrect format, it may be encrypted with an unsupported algorithm, or it may be an unsupported key type (e.g. EC curves with explicit parameters).)r� r� rG rW rH ZEVP_R_BAD_DECRYPTZERR_LIB_PKCS12Z!PKCS12_R_PKCS12_CIPHERFINAL_ERRORZCryptography_HAS_PROVIDERSZ ERR_LIB_PROVZPROV_R_BAD_DECRYPT�anyr& Z_errors_with_text)rf rk rP re rQ r" F s> � ���� � �� � �z!Backend._handle_key_loading_errorc C st z| � |�}W n ty( | jj}Y n0 | j�|�}|| jjkrN| �� dS | �|| jjk� | j� |� dS d S )NFT) �_elliptic_curve_to_nidr rW � NID_undefZEC_GROUP_new_by_curve_namerU rq r� rm Z EC_GROUP_free)rf �curve� curve_nid�grouprP rP rQ �elliptic_curve_supportedu s z Backend.elliptic_curve_supportedc C s t |tj�sdS | �|�S r� )r� r+ ZECDSArQ )rf Zsignature_algorithmrN rP rP rQ �,elliptic_curve_signature_algorithm_supported� s z4Backend.elliptic_curve_signature_algorithm_supportedc C s\ | � |�rD| �|�}| j�|�}| �|dk� | �|�}t| ||�S td�|j �t j ��dS )z@ Generate a new private key on the named curve. rS z#Backend object does not support {}.N) rQ �_ec_key_new_by_curverW ZEC_KEY_generate_keyrm �_ec_cdata_to_evp_pkeyr r rh r� r �UNSUPPORTED_ELLIPTIC_CURVE)rf rN r� r| r� rP rP rQ �#generate_elliptic_curve_private_key� s �z+Backend.generate_elliptic_curve_private_keyc C sz |j }| �|j�}| j�| �|j�| jj�}| j� ||�}|dkrR| � � t d��| � ||j |j�}| �|�}t| ||�S )NrS �Invalid EC key.)r� rS rN rU r� r� � private_valuerW � BN_clear_free�EC_KEY_set_private_keyr� r� �)_ec_key_set_public_key_affine_coordinatesr r rT r )rf r� Zpublicr� rX r| r� rP rP rQ �#load_elliptic_curve_private_numbers� s � � z+Backend.load_elliptic_curve_private_numbersc C s4 | � |j�}| �||j|j�}| �|�}t| ||�S ru )rS rN r[ r r rT r )rf r� r� r� rP rP rQ �"load_elliptic_curve_public_numbers� s � z*Backend.load_elliptic_curve_public_numbersc C s� | � |�}| j�|�}| �|| jjk� | j�|�}| �|| jjk� | j�|| jj�}| � � �@}| j� |||t |�|�}|dkr�| � � t d��W d � n1 s�0 Y | j�||�}| �|dk� | �|�}t| ||�S )NrS z(Invalid public bytes for the given curve)rS rW �EC_KEY_get0_grouprm rU rq � EC_POINT_newr� � EC_POINT_free� _tmp_bn_ctxZEC_POINT_oct2pointr� r� r� �EC_KEY_set_public_keyrT r ) rf rN Z point_bytesr� rP �point�bn_ctxr| r� rP rP rQ � load_elliptic_curve_public_bytes� s" �& z(Backend.load_elliptic_curve_public_bytesc C sb | � |�}| �|�\}}| j�|�}| �|| jjk� | j�|| jj�}| � |�}| j�|| jj �}| � � �|}| j� |||| jj| jj|�} | �| dk� | j� |�} | j� |�} |||| | |�} | dkr�| �� td��W d � n1 s�0 Y | j�||�} | �| dk� | � |�} | j�| | jj �} | j�|| �} | �| dk� | �|�} t| || �S )NrS z'Unable to derive key from private_value)rS � _ec_key_determine_group_get_funcrW r_ rm rU rq r� r` r� rY ra Z EC_POINT_mulZ BN_CTX_getr� r� rb rZ rT r )rf rX rN r� �get_funcrP rc �valuerd r| Zbn_xZbn_yZprivater� rP rP rQ �!derive_elliptic_curve_private_key� s4 � & z)Backend.derive_elliptic_curve_private_keyc C s | � |�}| �|�S ru )rL �_ec_key_new_by_curve_nid)rf rN rO rP rP rQ rS � s z Backend._ec_key_new_by_curvec C s0 | j �|�}| �|| jjk� | j�|| j j�S ru )rW ZEC_KEY_new_by_curve_namerm rU rq r� r� )rf rO r� rP rP rQ rj � s z Backend._ec_key_new_by_curve_nidc C s, | j rt|| j�sdS | �|�o*t|tj�S r� )rZ r� �_fips_ecdh_curvesrQ r+ ZECDH)rf r� rN rP rP rQ �+elliptic_curve_exchange_algorithm_supported s � �z3Backend.elliptic_curve_exchange_algorithm_supportedc C s( | � � }| j�||�}| �|dk� |S rw )r� rW ZEVP_PKEY_set1_EC_KEYrm )rf r� r� r| rP rP rQ rT s z Backend._ec_cdata_to_evp_pkeyc C sN ddd�}|� |j|j�}| j�|�� �}|| jjkrJtd�|j�tj ��|S )z/ Get the NID for a curve name. Z prime192v1Z prime256v1)Z secp192r1Z secp256r1z${} is not a supported elliptic curve) �getr� rW � OBJ_sn2nidr� rM r rh r rU )rf rN Z curve_aliasesZ curve_namerO rP rP rQ rL s �z Backend._elliptic_curve_to_nidc c sd | j �� }| �|| jjk� | j�|| j j�}| j �|� z|V W | j �|� n| j �|� 0 d S ru ) rW Z BN_CTX_newrm rU rq r� Z BN_CTX_freeZ BN_CTX_startZ BN_CTX_end)rf rd rP rP rQ ra # s zBackend._tmp_bn_ctxc C s� | � || jjk� | j�d�}| � || jjk� | j�|�}| � || jjk� | j�|�}| � || jjk� | j�|�}| � || jjk� ||kr�| jj r�| jj }n| jj }||fS )zu Given an EC_KEY determine the group and what function is required to get point coordinates. s characteristic-two-field) rm rU rq rW rn rM r^ ZEC_GROUP_method_ofZEC_METHOD_get_field_typeZCryptography_HAS_EC2MZ$EC_POINT_get_affine_coordinates_GF2mZ#EC_POINT_get_affine_coordinates_GFp)rf r Z nid_two_fieldrP �method�nidrg rP rP rQ rf . s z(Backend._ec_key_determine_group_get_funcc C st |dk s|dk rt d��| j�| �|�| jj�}| j�| �|�| jj�}| j�|||�}|dkrp| �� t d��|S )zg Sets the public key point in the EC_KEY context to the affine x and y values. r z2Invalid EC key. Both x and y must be non-negative.rS rW )r� rU r� r� rW r� Z(EC_KEY_set_public_key_affine_coordinatesr� )rf r r r r| rP rP rQ r[ J s �z1Backend._ec_key_set_public_key_affine_coordinatesc C s( t |tj�std��t |tj�s(td��t |tj�s<td��t |tj�rNd}n0t |tj�rv|j}t |�dkr~t d��nt d��|tjj u r�|tjj u r�| j j}n |tjju r�| j j}nt d��| �|||�S |tjju �r�| jr�t |tj�s�t d ��| j �|�} |tjj u �rl| | j jk�r&| j j}n8| | j jk�r>| j j}n | | j jk�rV| j j}nt d ��| �|||�S |tjju �r�|�r�t d ��| | j jk�r�| j j}n8| | j jk�r�| j j }n | | j jk�r�| j j }nt d ��| � ||�S t d ��|tjj u �r |tjj u �rt �!||�S t d ��t d��d S )N�/encoding must be an item from the Encoding enumz2format must be an item from the PrivateFormat enumzBEncryption algorithm must be a KeySerializationEncryption instancerp i� zBPasswords longer than 1023 bytes are not supported by this backendzUnsupported encryption typez Unsupported encoding for PKCS8zCEncrypted traditional OpenSSL format is not supported in FIPS mode.z+Unsupported key type for TraditionalOpenSSLzDEncryption is not supported for DER encoded traditional OpenSSL keysz+Unsupported encoding for TraditionalOpenSSLz=OpenSSH private key format can only be used with PEM encoding� format is invalid with this key)"r� r( r0 r+ Z PrivateFormatZKeySerializationEncryption� NoEncryption�BestAvailableEncryptionr r� r� ZPKCS8�PEMrW Z PEM_write_bio_PKCS8PrivateKeyr1 Zi2d_PKCS8PrivateKey_bio�_private_key_bytes_via_bioZTraditionalOpenSSLrZ r� r� ZPEM_write_bio_RSAPrivateKeyr� ZPEM_write_bio_DSAPrivateKeyr� ZPEM_write_bio_ECPrivateKeyZi2d_RSAPrivateKey_bioZi2d_ECPrivateKey_bioZi2d_DSAPrivateKey_bio�_bio_func_output�OpenSSHrF Zserialize_ssh_private_key) rf �encodingrh �encryption_algorithmr� r� �cdatar � write_bior� rP rP rQ �_private_key_bytes^ s� ��� � � ��� ��� � �zBackend._private_key_bytesc C s< |s| j j}n | j�d�}| �||||t|�| j j| j j�S )Ns aes-256-cbc)rU rq rW �EVP_get_cipherbynamerw r� )rf r| r� r r� rP rP rQ rv � s �z"Backend._private_key_bytes_via_bioc G s0 | � � }||g|�R � }| �|dk� | �|�S rw )r� rm r� )rf r| �argsrK r| rP rP rQ rw � s zBackend._bio_func_outputc C s t |tj�std��t |tj�s(td��|tjju rt|tjju rJ| jj}n |tjj u r`| jj }nt d��| � ||�S |tjj u r�| j�|�}|| jjkr�t d��|tjju r�| jj}n |tjj u r�| jj}nt d��| � ||�S |tjju �r|tjju �rt�|�S t d��t d��d S )Nrq z1format must be an item from the PublicFormat enumz8SubjectPublicKeyInfo works only with PEM or DER encodingz+PKCS1 format is supported only for RSA keysz)PKCS1 works only with PEM or DER encodingz1OpenSSH format must be used with OpenSSH encodingrr )r� r( r0 r+ Z PublicFormatZSubjectPublicKeyInforu rW ZPEM_write_bio_PUBKEYr1 Zi2d_PUBKEY_bior� rw ZPKCS1r� r� ZPEM_write_bio_RSAPublicKeyZi2d_RSAPublicKey_biorx rF Zserialize_ssh_public_key)rf ry rh r� r� r{ r| r� rP rP rQ �_public_key_bytes� s@ � � �zBackend._public_key_bytesc C s� |t jju rtd��| j�d�}| j�|| jj|| jj� |t jj u rj|d | jjkr`| jj }q�| jj }n8|t jj u r�|d | jjkr�| jj }q�| jj}ntd��| �� }|||�}| �|dk� | �|�S )Nz!OpenSSH encoding is not supportedz BIGNUM **r rq rS )r( r0 rx r+ rU r� rW Z DH_get0_pqgrq ru ZPEM_write_bio_DHxparamsZPEM_write_bio_DHparamsr1 Z Cryptography_i2d_DHxparams_bioZi2d_DHparams_bior� rm r� )rf ry rh r{ r� r| rK r| rP rP rQ �_parameter_bytes s" zBackend._parameter_bytesc C s | j j S ru �rW �CRYPTOGRAPHY_IS_BORINGSSLre rP rP rQ � dh_supported' s zBackend.dh_supportedc C s� |t jk rtd�t j���|dvr*td��| j�� }| �|| jjk� | j� || jj �}| j� |||| jj�}| �|dk� t | |�S )Nz$DH key_size must be at least {} bits)� � zDH generator must be 2 or 5rS ) r) Z_MIN_MODULUS_SIZEr� rh rW �DH_newrm rU rq r� r� ZDH_generate_parameters_exr )rf � generatorr� Zdh_param_cdatar| rP rP rQ �generate_dh_parameters* s �� �z Backend.generate_dh_parametersc C s( | � � }| j�||�}| �|dk� |S rw )r� rW ZEVP_PKEY_set1_DHrm )rf r� r� r| rP rP rQ �_dh_cdata_to_evp_pkey@ s z Backend._dh_cdata_to_evp_pkeyc C s< t |j| �}| j�|�}| �|dk� | �|�}t| ||�S rw )r Z _dh_cdatarW ZDH_generate_keyrm r� r )rf r Z dh_key_cdatar| r� rP rP rQ �generate_dh_private_keyF s z Backend.generate_dh_private_keyc C s | � | �||��S ru )r� r� )rf r� r� rP rP rQ �&generate_dh_private_key_and_parametersP s �z.Backend.generate_dh_private_key_and_parametersc C s> |j j}| j�� }| �|| jjk� | j�|| jj�}| � |j �}| � |j �}|j d urf| � |j �}n| jj}| � |j j �}| � |j�}| j�||||�} | �| dk� | j�|||�} | �| dk� | j�dd�} | j�|| �} | �| dk� | d dk�r(|j dk�r | d | jjA dk�s(td��| �|�} t| || �S )NrS �int[]r r� z.DH private numbers did not pass safety checks.)r� r rW r� rm rU rq r� r� r� r� r r� r r � DH_set0_pqg� DH_set0_keyr� �Cryptography_DH_checkZDH_NOT_SUITABLE_GENERATORr� r� r ) rf r� r r� r� r r� r r r| �codesr� rP rP rQ �load_dh_private_numbersU s4 �� z Backend.load_dh_private_numbersc C s� | j �� }| �|| jjk� | j�|| j j�}|j}| �|j �}| �|j �}|j d urd| �|j �}n| jj}| �|j �}| j � ||||�}| �|dk� | j �||| jj�}| �|dk� | �|�} t| || �S rw )rW r� rm rU rq r� r� r r� r� r r� r r� r� r� r ) rf r� r� r r� r r� r r| r� rP rP rQ �load_dh_public_numbers� s z Backend.load_dh_public_numbersc C s� | j �� }| �|| jjk� | j�|| j j�}| �|j�}| �|j �}|j d ur^| �|j �}n| jj}| j � ||||�}| �|dk� t | |�S rw ) rW r� rm rU rq r� r� r� r� r r� r� r )rf r� r� r� r r� r| rP rP rQ �load_dh_parameter_numbers� s z!Backend.load_dh_parameter_numbersc C s� | j �� }| �|| jjk� | j�|| j j�}| �|�}| �|�}|d urV| �|�}n| jj}| j �||||�}| �|dk� | j� dd�}| j � ||�}| �|dk� |d dkS )NrS r� r ) rW r� rm rU rq r� r� r� r� r� r� )rf r� r r� r� r| r� rP rP rQ �dh_parameters_supported� s z Backend.dh_parameters_supportedc C s | j jdkS rw )rW rc re rP rP rQ � dh_x942_serialization_supported� s z'Backend.dh_x942_serialization_supportedc C sh t |�dkrtd��| �� }| j�|| jj�}| �|dk� | j�||t |��}| �|dk� t| |�S )N� z%An X25519 public key is 32 bytes longrS ) r� r� r� rW ZEVP_PKEY_set_type� NID_X25519rm Z EVP_PKEY_set1_tls_encodedpointr# )rf r� r� r| rP rP rQ �x25519_load_public_bytes� s �z Backend.x25519_load_public_bytesc C s� t |�dkrtd��d}| �d��F}||dd�< ||dd �< | �|�}| j�|j| jj�}W d � n1 sn0 Y | � || jjk� | j� || jj �}| � | j� |�| jj k� t| |�S )Nr� z&An X25519 private key is 32 bytes longs 0. 0+en" �0 r � )r� r� �_zeroed_bytearrayr� rW r* rK rU rq rm r� r� r� r� r" )rf r� Z pkcs8_prefix�barK r� rP rP rQ �x25519_load_private_bytes� s 2�z!Backend.x25519_load_private_bytesc C s� | j �|| jj�}| �|| jjk� | j�|| j j�}| j �|�}| �|dk� | j�d�}| j � ||�}| �|dk� | �|d | jjk� | j�|d | j j �}|S )NrS � EVP_PKEY **r ) rW ZEVP_PKEY_CTX_new_idrU rq rm r� ZEVP_PKEY_CTX_freeZEVP_PKEY_keygen_initr� ZEVP_PKEY_keygenr� )rf rp Z evp_pkey_ctxr| Z evp_ppkeyr� rP rP rQ �_evp_pkey_keygen_gc� s zBackend._evp_pkey_keygen_gcc C s | � | jj�}t| |�S ru )r� rW r� r" r� rP rP rQ �x25519_generate_key s zBackend.x25519_generate_keyc C s | j r dS | jj S r� )rZ rW �CRYPTOGRAPHY_IS_LIBRESSLre rP rP rQ �x25519_supported s zBackend.x25519_supportedc C s` t |�dkrtd��| j�| jj| jj|t |��}| �|| jjk� | j�|| jj �}t | |�S )N�8 z#An X448 public key is 56 bytes long) r� r� rW �EVP_PKEY_new_raw_public_key�NID_X448rU rq rm r� r� r% �rf r� r� rP rP rQ �x448_load_public_bytes s �z Backend.x448_load_public_bytesc C sl t |�dkrtd��| j�|�}| j�| jj| jj|t |��}| �|| jjk� | j� || jj �}t | |�S )Nr� z$An X448 private key is 56 bytes long) r� r� rU r� rW � EVP_PKEY_new_raw_private_keyr� rq rm r� r� r$ �rf r� r� r� rP rP rQ �x448_load_private_bytes s �z Backend.x448_load_private_bytesc C s | � | jj�}t| |�S ru )r� rW r� r$ r� rP rP rQ �x448_generate_key' s zBackend.x448_generate_keyc C s | j r dS | jj o | jj S r� )rZ rW Z"CRYPTOGRAPHY_OPENSSL_LESS_THAN_111r� re rP rP rQ �x448_supported+ s �zBackend.x448_supportedc C s | j r dS | jj S r� )rZ rW �#CRYPTOGRAPHY_OPENSSL_LESS_THAN_111Bre rP rP rQ �ed25519_supported3 s zBackend.ed25519_supportedc C sn t �d|� t|�tjkr"td��| j�| jj| j j |t|��}| � || j j k� | j � || jj �}t| |�S )Nr� z&An Ed25519 public key is 32 bytes long)r � _check_bytesr� r, �_ED25519_KEY_SIZEr� rW r� � NID_ED25519rU rq rm r� r� r r� rP rP rQ �ed25519_load_public_bytes8 s �z!Backend.ed25519_load_public_bytesc C sz t |�tjkrtd��t�d|� | j�|�}| j� | jj | jj |t |��}| � || jj k� | j� || jj�}t| |�S )Nz'An Ed25519 private key is 32 bytes longr� )r� r, r� r� r rD rU r� rW r� r� rq rm r� r� r r� rP rP rQ �ed25519_load_private_bytesF s �z"Backend.ed25519_load_private_bytesc C s | � | jj�}t| |�S ru )r� rW r� r r� rP rP rQ �ed25519_generate_keyT s z Backend.ed25519_generate_keyc C s | j r dS | jj o | jj S r� )rZ rW r� r� re rP rP rQ �ed448_supportedX s �zBackend.ed448_supportedc C sl t �d|� t|�tkr td��| j�| jj| jj |t|��}| � || jj k� | j� || jj �}t | |�S )Nr� z$An Ed448 public key is 57 bytes long)r r� r� r r� rW r� � NID_ED448rU rq rm r� r� r r� rP rP rQ �ed448_load_public_bytes` s �z Backend.ed448_load_public_bytesc C sx t �d|� t|�tkr td��| j�|�}| j�| jj | jj |t|��}| � || jj k� | j� || jj �}t| |�S )Nr� z%An Ed448 private key is 57 bytes long)r rD r� r r� rU r� rW r� r� rq rm r� r� r r� rP rP rQ �ed448_load_private_bytesm s �z Backend.ed448_load_private_bytesc C s | � | jj�}t| |�S ru )r� rW r� r r� rP rP rQ �ed448_generate_key{ s zBackend.ed448_generate_keyc C s� | j �d|�}| j �|�}| j�|t|�|t|�|||tj||� } | dkrr| �� } d| | d } t d� | �| ��| j � |�d d � S )Nr� rS � i zJNot enough memory to derive key. These parameters require {} MB of memory.) rU r� r� rW ZEVP_PBE_scryptr� rD Z _MEM_LIMITr� � MemoryErrorrh r� ) rf r� r� r� r� �rr� r� r� r| rk Z min_memoryrP rP rQ � derive_scrypt s0 � ��zBackend.derive_scryptc C s2 t �|�}| jr || jvr dS | j�|�| jjkS r� )r Z_aead_cipher_namerZ � _fips_aeadrW r~ rU rq )rf r� � cipher_namerP rP rQ �aead_cipher_supported� s z Backend.aead_cipher_supportedc c s2 t |�}z|V W | �||� n| �||� 0 dS )z� This method creates a bytearray, which we copy data into (hopefully also from a mutable buffer that can be dynamically erased!), and then zero when we're done. N)� bytearray� _zero_data)rf r� r� rP rP rQ r� � s zBackend._zeroed_bytearrayc C s t |�D ] }d||< qd S rn )�range)rf r� r� �irP rP rQ r� � s zBackend._zero_datac c s| |du r| j jV ndt|�}| j �d|d �}| j �|||� z |V W | �| j �d|�|� n| �| j �d|�|� 0 dS )a� This method takes bytes, which can be a bytestring or a mutable buffer like a bytearray, and yields a null-terminated version of that data. This is required because PKCS12_parse doesn't take a length with its password char * and ffi.from_buffer doesn't provide null termination. So, to support zeroing the data via bytearray we need to build this ridiculous construct that copies the memory, but zeroes it after use. Nr rS z uint8_t *)rU rq r� r� Zmemmover� �cast)rf r� Zdata_lenr� rP rP rQ �_zeroed_null_terminated_buf� s z#Backend._zeroed_null_terminated_bufc C s2 | � ||�}|j|jr |jjnd dd� |jD �fS )Nc S s g | ] }|j �qS rP )� certificate)rI r. rP rP rQ � <listcomp>� rp zABackend.load_key_and_certificates_from_pkcs12.<locals>.<listcomp>)� load_pkcs12r� r. r� Zadditional_certs)rf r� r Zpkcs12rP rP rQ �%load_key_and_certificates_from_pkcs12� s �z-Backend.load_key_and_certificates_from_pkcs12c C s� |d urt �d|� | �|�}| j�|j| jj�}|| jjkrN| �� t d��| j� || jj �}| j� d�}| j� d�}| j� d�}| � |��$}| j�|||||�} W d � n1 s�0 Y | jjr�| �� | dkr�| �� t d��d } d } g } |d | jjk�r(| j� |d | jj�} | �| �} |d | jjk�r�| j� |d | jj�}| �|�}d }| j�|| jj�}|| jjk�r�| j�|�}t||�} |d | jjk�r~| j� |d | jj�}| j�|d �}| jj�s�| jj�r�t|�}n t t|��}|D ]�}| j� ||�}| � || jjk� | j� || jj�}| �|�}d }| j�|| jj�}|| jjk�rj| j�|�}| � t||�� �q�t | | | �S )Nr z!Could not deserialize PKCS12 datar� zX509 **z Cryptography_STACK_OF_X509 **r z Invalid password or PKCS12 data)!r rD r� rW Zd2i_PKCS12_biorK rU rq r� r� r� � PKCS12_freer� r� Z PKCS12_parser� r� r� r2 r5 ZX509_alias_get0r� rG � sk_X509_free� sk_X509_num�#CRYPTOGRAPHY_OPENSSL_300_OR_GREATERr� r� �reversed� sk_X509_valuerm rd rH )rf r� r rK �p12Z evp_pkey_ptrZx509_ptrZ sk_x509_ptr� password_bufr| r. r� Zadditional_certificatesr� r Zcert_objr� Z maybe_name�sk_x509r� �indicesr� Z addl_certZ addl_namerP rP rQ r� � sp �" �� �zBackend.load_pkcs12c C s� d }|d urt �d|� t|tj�r6d}d}d} d} n4t|tj�rb| jj}| jj}d} d} |j}nt d��|d u s~t |�dkr�| j j } nZ| j� � } | j �| | jj�} g } |D ]4} | �| �}| �|� | j�| |�}t�|dk� q�| �|���}| �|��Z}|�r | �|�n| j j }|�r |jn| j j }| j�||||| ||| | d� }W d � n1 �sZ0 Y W d � n1 �sz0 Y | �|| j j k� | j �|| jj�}| �� }| j�||�}| �|dk� | �|�S )Nr� rC r i N rS z Unsupported key encryption type) r r� r� r( rs rt rW Z&NID_pbe_WithSHA1And3_Key_TripleDES_CBCr r� r� rU rq �sk_X509_new_nullr� r� r3 rd � sk_X509_push�backendrm r� r? 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Zcasrz r Znid_certZnid_keyZ pkcs12_iterZmac_iterr� Zossl_cas�caZossl_car| r� Zname_buf� ossl_certr� r� rK rP rP rQ �(serialize_key_and_certificates_to_pkcs12 sb � �D z0Backend.serialize_key_and_certificates_to_pkcs12c C s | j r dS | jjdkS r� )rZ rW ZCryptography_HAS_POLY1305re rP rP rQ �poly1305_supportedc s zBackend.poly1305_supportedc C s* t �d|� t|�tkr td��t| |�S )Nr� z A poly1305 key is 32 bytes long)r rD r� r r� r )rf r� rP rP rQ �create_poly1305_ctxh s zBackend.create_poly1305_ctxc C s | j j S ru r� re rP rP rQ �pkcs7_supportedo s zBackend.pkcs7_supportedc C sn t �d|� | �|�}| j�|j| jj| jj| jj�}|| jjkrR| �� t d��| j� || jj �}| � |�S �Nr� zUnable to parse PKCS7 data) r r� r� rW ZPEM_read_bio_PKCS7rK rU rq r� r� r� � PKCS7_free�_load_pkcs7_certificates�rf r� rK �p7rP rP rQ �load_pem_pkcs7_certificatesr s � z#Backend.load_pem_pkcs7_certificatesc C sb t �d|� | �|�}| j�|j| jj�}|| jjkrF| �� t d��| j� || jj �}| � |�S r� ) r r� r� rW Z d2i_PKCS7_biorK rU rq r� r� r� r� r� r� rP rP rQ �load_der_pkcs7_certificates s z#Backend.load_der_pkcs7_certificatesc C s� | j �|j�}| �|| j jk� || j jkr>td�|�tj ��g }|j j | j j krV|S |j j j}| j �|�}t|�D ]d}| j �||�}| �|| j j k� | j �|�}| �|dk� | j �|| j j�}| �|�} |�| � qt|S )NzNOnly basic signed structures are currently supported. 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