o
     `yL                     @   sD  d dl mZmZmZ d dlmZ d dlmZmZm	Z	 d dl
mZmZmZ d dlmZ d dlmZmZmZ d dlmZmZmZmZmZmZ d dlmZmZ d	d
 Zdd Zdd Z dd Z!dd Z"dd Z#dd Z$dd Z%e&eG dd de'Z(e&eG dd de'Z)e&eG dd de'Z*e&eG dd  d e'Z+d!S )"    )absolute_importdivisionprint_function)utils)InvalidSignatureUnsupportedAlgorithm_Reasons)_calculate_digest_and_algorithm_check_not_prehashed_warn_sign_verify_deprecated)hashes)AsymmetricSignatureContextAsymmetricVerificationContextrsa)AsymmetricPaddingMGF1OAEPPKCS1v15PSScalculate_max_pss_salt_length)RSAPrivateKeyWithSerializationRSAPublicKeyWithSerializationc                 C   s(   | j }|tju s|tju rt||S |S N)Z_salt_lengthr   Z
MAX_LENGTHr   r   )ZpsskeyZhash_algorithmZsalt r   ~home/ych/rk3568/buildroot/output/rockchip_rk3568/host/lib/python3.10/site-packages/cryptography/hazmat/backends/openssl/rsa.py_get_rsa_pss_salt_length&   s   
r   c                 C   s   t |ts	tdt |tr| jj}n+t |tr4| jj}t |jt	s(t
dtj| |s3t
dtjn
t
d|jtjt| ||||S )Nz1Padding must be an instance of AsymmetricPadding.'Only MGF1 is supported by this backend.zPThis combination of padding and hash algorithm is not supported by this backend.${} is not supported by this backend.)
isinstancer   	TypeErrorr   _libRSA_PKCS1_PADDINGr   ZRSA_PKCS1_OAEP_PADDING_mgfr   r   r   UNSUPPORTED_MGFZrsa_padding_supportedUNSUPPORTED_PADDINGformatname_enc_dec_rsa_pkey_ctx)backendr   datapaddingpadding_enumr   r   r   _enc_dec_rsa/   s,   





r-   c                 C   s  t |tr| jj}| jj}n| jj}| jj}| j|j| j	j
}| || j	j
k | j	|| jj}||}| |dk | j||}| |dk | j|j}	| |	dk t |tr| jjr| |jj}
| j||
}| |dk | |j}| j||}| |dk t |tr|jd urt|jdkr| jt|j}| || j	j
k | j	||jt|j | j||t|j}| |dk | j	d|	}| j	d|	}|||||t|}| j	|d |d  }| j  |dkrtd|S )N   r   size_t *unsigned char[]zEncryption/decryption failed.) r   _RSAPublicKeyr!   ZEVP_PKEY_encrypt_initZEVP_PKEY_encryptZEVP_PKEY_decrypt_initZEVP_PKEY_decryptEVP_PKEY_CTX_new	_evp_pkey_ffiNULLopenssl_assertgcEVP_PKEY_CTX_freeEVP_PKEY_CTX_set_rsa_paddingEVP_PKEY_sizer   ZCryptography_HAS_RSA_OAEP_MD_evp_md_non_null_from_algorithmr#   
_algorithmEVP_PKEY_CTX_set_rsa_mgf1_mdZEVP_PKEY_CTX_set_rsa_oaep_mdZ_labellenZOPENSSL_mallocmemmoveZ EVP_PKEY_CTX_set0_rsa_oaep_labelnewbufferERR_clear_error
ValueError)r)   r   r*   r,   r+   initZcryptpkey_ctxresbuf_sizemgf1_mdZoaep_mdZlabelptrZoutlenbufresbufr   r   r   r(   N   sX   


r(   c                 C   s   t |ts	td| j|j}| |dk t |tr"| jj}|S t |t	rPt |j
ts3tdtjt |tjs=td||j d dk rJtd| jj}|S td|jtj)Nz'Expected provider of AsymmetricPadding.r   r   z*Expected instance of hashes.HashAlgorithm.   zDDigest too large for key size. Use a larger key or different digest.r   )r   r   r    r!   r:   r3   r6   r   r"   r   r#   r   r   r   r$   r   ZHashAlgorithmdigest_sizerC   ZRSA_PKCS1_PSS_PADDINGr&   r'   r%   )r)   r   r+   	algorithmZ	pkey_sizer,   r   r   r   _rsa_sig_determine_padding   s2   



rN   c           
      C   s.  t | |||}| j|j| jj}| || jjk | j|| jj}||}| |dk |d urP| 	|}| j
||}|dkrP|   td|jtj| j||}|dkri|   td|jtjt|tr| j|t|||}| |dk | 	|jj}	| j||	}| |dk |S )Nr.   r   z4{} is not supported by this backend for RSA signing.z4{} is not supported for the RSA signature operation.)rN   r!   r2   r3   r4   r5   r6   r7   r8   r;   ZEVP_PKEY_CTX_set_signature_md_consume_errorsr   r&   r'   r   ZUNSUPPORTED_HASHr9   r%   r   r   Z EVP_PKEY_CTX_set_rsa_pss_saltlenr   r#   r<   r=   )
r)   r+   rM   r   Z	init_funcr,   rE   rF   Zevp_mdrH   r   r   r   _rsa_sig_setup   sJ   

rP   c           
      C   s   t | |||| jj}| jd}| j|| jj||t|}| |dk | jd|d }| j||||t|}|dkrG| 	 }	t
d|	| j|d d  S )Nr/   r.   r0   r   zuDigest or salt length too long for key size. Use a larger key or shorter salt length if you are specifying a PSS salt)rP   r!   ZEVP_PKEY_sign_initr4   r@   ZEVP_PKEY_signr5   r>   r6   _consume_errors_with_textrC   rA   )
r)   r+   rM   private_keyr*   rE   buflenrF   rI   errorsr   r   r   _rsa_sig_sign   s*   rU   c                 C   sV   t | |||| jj}| j||t||t|}| |dk |dkr)|   td S )Nr   )rP   r!   ZEVP_PKEY_verify_initZEVP_PKEY_verifyr>   r6   rO   r   )r)   r+   rM   
public_key	signaturer*   rE   rF   r   r   r   _rsa_sig_verify   s   rX   c                 C   s   t | |||| jj}| j|j}| |dk | jd|}| jd|}| j||||t	|}	| j
|d |d  }
| j  |	dkrIt|
S )Nr   r0   r/   r.   )rP   r!   ZEVP_PKEY_verify_recover_initr:   r3   r6   r4   r@   ZEVP_PKEY_verify_recoverr>   rA   rB   r   )r)   r+   rM   rV   rW   rE   maxlenrI   rS   rF   rJ   r   r   r   _rsa_sig_recover  s&   
rZ   c                   @   $   e Zd Zdd Zdd Zdd ZdS )_RSASignatureContextc                 C   s<   || _ || _t|||| || _|| _t| j| j | _d S r   )_backend_private_keyrN   _paddingr<   r   Hash	_hash_ctx)selfr)   rR   r+   rM   r   r   r   __init__,  s   z_RSASignatureContext.__init__c                 C      | j | d S r   ra   updaterb   r*   r   r   r   rf   8     z_RSASignatureContext.updatec                 C   s   t | j| j| j| j| j S r   )rU   r]   r_   r<   r^   ra   finalizerb   r   r   r   ri   ;  s   z_RSASignatureContext.finalizeN)__name__
__module____qualname__rc   rf   ri   r   r   r   r   r\   *  s    r\   c                   @   r[   )_RSAVerificationContextc                 C   sF   || _ || _|| _|| _t|||| |}|| _t| j| j | _d S r   )	r]   _public_key
_signaturer_   rN   r<   r   r`   ra   )rb   r)   rV   rW   r+   rM   r   r   r   rc   G  s   z _RSAVerificationContext.__init__c                 C   rd   r   re   rg   r   r   r   rf   U  rh   z_RSAVerificationContext.updatec                 C   s"   t | j| j| j| j| j| j S r   )rX   r]   r_   r<   ro   rp   ra   ri   rj   r   r   r   verifyX  s   z_RSAVerificationContext.verifyN)rk   rl   rm   rc   rf   rq   r   r   r   r   rn   E  s    rn   c                   @   N   e Zd Zdd ZedZdd Zdd Zdd	 Z	d
d Z
dd Zdd ZdS )_RSAPrivateKeyc                 C   s   |j |}|dkr| }td||j ||jj}||dk || _|| _	|| _
| jjd}| jj | j	|| jjj| jjj | j|d | jjjk | jj |d | _d S )Nr.   zInvalid private key	BIGNUM **r   )r!   ZRSA_check_keyrQ   rC   ZRSA_blinding_onr4   r5   r6   r]   
_rsa_cdatar3   r@   RSA_get0_keyBN_num_bits	_key_size)rb   r)   	rsa_cdataevp_pkeyrF   rT   nr   r   r   rc   e  s$   
z_RSAPrivateKey.__init__rx   c                 C   s   t   t| t| j| ||S r   )r   r
   r\   r]   )rb   r+   rM   r   r   r   signer  s   z_RSAPrivateKey.signerc                 C   s2   | j d d }|t|krtdt| j| ||S )N      z,Ciphertext length must be equal to key size.)key_sizer>   rC   r-   r]   )rb   Z
ciphertextr+   Zkey_size_bytesr   r   r   decrypt  s   z_RSAPrivateKey.decryptc                 C   sV   | j j| j}| j || j jjk | j j|| j jj}| j 	|}t
| j ||S r   )r]   r!   ZRSAPublicKey_dupru   r6   r4   r5   r7   ZRSA_freeZ_rsa_cdata_to_evp_pkeyr1   )rb   ctxrz   r   r   r   rV     s
   z_RSAPrivateKey.public_keyc           	      C   s  | j jd}| j jd}| j jd}| j jd}| j jd}| j jd}| j jd}| j jd}| j j| j||| | j |d | j jjk | j |d | j jjk | j |d | j jjk | j j| j|| | j |d | j jjk | j |d | j jjk | j j	| j||| | j |d | j jjk | j |d | j jjk | j |d | j jjk t
j| j |d | j |d | j |d | j |d | j |d | j |d t
j| j |d | j |d ddS )Nrt   r   er{   )pqddmp1dmq1iqmppublic_numbers)r]   r4   r@   r!   rv   ru   r6   r5   ZRSA_get0_factorsZRSA_get0_crt_paramsr   ZRSAPrivateNumbers
_bn_to_intRSAPublicNumbers)	rb   r{   r   r   r   r   r   r   r   r   r   r   private_numbers  sB   
z_RSAPrivateKey.private_numbersc                 C   s   | j |||| | j| jS r   )r]   Z_private_key_bytesr3   ru   )rb   encodingr&   Zencryption_algorithmr   r   r   private_bytes  s   z_RSAPrivateKey.private_bytesc                 C   s$   t | j||\}}t| j||| |S r   )r	   r]   rU   )rb   r*   r+   rM   r   r   r   sign  s   z_RSAPrivateKey.signN)rk   rl   rm   rc   r   read_only_propertyr   r|   r   rV   r   r   r   r   r   r   r   rs   c  s    
#
rs   c                   @   rr   )r1   c                 C   st   || _ || _|| _| j jd}| j j| j|| j jj| j jj | j |d | j jjk | j j	|d | _
d S )Nrt   r   )r]   ru   r3   r4   r@   r!   rv   r5   r6   rw   rx   )rb   r)   ry   rz   r{   r   r   r   rc     s   z_RSAPublicKey.__init__rx   c                 C   s,   t   td| t| t| j| |||S )NrW   )r   r   _check_bytesr
   rn   r]   rb   rW   r+   rM   r   r   r   verifier  s   z_RSAPublicKey.verifierc                 C   s   t | j| ||S r   )r-   r]   )rb   Z	plaintextr+   r   r   r   encrypt  rh   z_RSAPublicKey.encryptc                 C   s   | j jd}| j jd}| j j| j||| j jj | j |d | j jjk | j |d | j jjk tj	| j 
|d | j 
|d dS )Nrt   r   r   )r]   r4   r@   r!   rv   ru   r5   r6   r   r   r   )rb   r{   r   r   r   r   r     s   z_RSAPublicKey.public_numbersc                 C   s   | j ||| | j| jS r   )r]   Z_public_key_bytesr3   ru   )rb   r   r&   r   r   r   public_bytes  s   z_RSAPublicKey.public_bytesc                 C   s&   t | j||\}}t| j||| ||S r   )r	   r]   rX   )rb   rW   r*   r+   rM   r   r   r   rq     s   z_RSAPublicKey.verifyc                 C   s   t | t| j||| |S r   )r
   rZ   r]   r   r   r   r   recover_data_from_signature   s   z)_RSAPublicKey.recover_data_from_signatureN)rk   rl   rm   rc   r   r   r   r   r   r   r   rq   r   r   r   r   r   r1     s    
	r1   N),
__future__r   r   r   cryptographyr   Zcryptography.exceptionsr   r   r   Z*cryptography.hazmat.backends.openssl.utilsr	   r
   r   Zcryptography.hazmat.primitivesr   Z)cryptography.hazmat.primitives.asymmetricr   r   r   Z1cryptography.hazmat.primitives.asymmetric.paddingr   r   r   r   r   r   Z-cryptography.hazmat.primitives.asymmetric.rsar   r   r   r-   r(   rN   rP   rU   rX   rZ   Zregister_interfaceobjectr\   rn   rs   r1   r   r   r   r   <module>   s0    	;+*c