o
     `T                     @   s  d dl mZmZmZ d dlZd dlZd dlZd dlZd dlZd dl	m
Z
 d dlmZ d dlmZ d dlmZmZmZmZ d dlmZmZmZ d dlmZmZmZmZ z
d d	lmZ d
Z W n e!yk   dZ dd ZY nw zd dl"m#Z$ W n e!y   d dl"m%Z$ Y nw dZ&dZ'dZ(dZ)dZ*dZ+dZ,e-dZ.dZ/dZ0dZ1dZ2dZ3dZ4dZ5dZ6e-e0d  e1 ej7Z8e9e:e;d!d"Z<ej=d#ej>dfej=d#ej?dfd$Z@e)e*e+d%ZAeBd&ZCeBd'ZDd(d) ZEe0d* e1d* fd+d,ZFd-d. ZGd/d0 ZHd1d2 ZId3d4 ZJd5d6 ZKd7d8 ZLd9d: ZMd;d< ZNG d=d> d>eOZPG d?d@ d@eOZQG dAdB dBeOZRG dCdD dDeOZSG dEdF dFeOZTe'eQ e(eR e&eT e)eSdGeU e*eSdHeV e+eSdIeW iZXdJdK ZYdTdLdMZZdTdNdOZ[dTdPdQZ\dRdS Z]dS )U    )absolute_importdivisionprint_functionN)utilsUnsupportedAlgorithm)_get_backend)dsaeced25519rsa)Cipher
algorithmsmodes)EncodingNoEncryptionPrivateFormatPublicFormat)kdfTFc                  O   s   t d)NzNeed bcrypt moduler   )argskwargs r   home/ych/rk3568/buildroot/output/rockchip_rk3568/host/lib/python3.10/site-packages/cryptography/hazmat/primitives/serialization/ssh.py_bcrypt_kdf!   s   r   )encodebytes)encodestrings   ssh-ed25519s   ssh-rsas   ssh-dsss   ecdsa-sha2-nistp256s   ecdsa-sha2-nistp384s   ecdsa-sha2-nistp521s   -cert-v01@openssh.coms   \A(\S+)[ \t]+(\S+)s   openssh-key-v1 s#   -----BEGIN OPENSSH PRIVATE KEY-----s!   -----END OPENSSH PRIVATE KEY-----s   bcrypts   none
   aes256-ctr   H   s   (.*?)          )r   s
   aes256-cbc)Z	secp256r1Z	secp384r1Z	secp521r1s   >Is   >Qc                 C   s(   | j }|jtvrtd|j t|j S )z3Return SSH key_type and curve_name for private key.z)Unsupported curve for ssh private key: %r)curvename_ECDSA_KEY_TYPE
ValueError)
public_keyr"   r   r   r   _ecdsa_key_typeS   s   

r'      
c                 C   s   d |t| |gS )N    )join_base64_encode)dataprefixsuffixr   r   r   _ssh_pem_encode]   s   r/   c                 C   s    | r
t | | dkrtddS )zRequire data to be full blocksr   zCorrupt data: missing paddingN)lenr%   )r,   Z	block_lenr   r   r   _check_block_sizea   s   r1   c                 C   s   | rt ddS )z!All data should have been parsed.zCorrupt data: unparsed dataN)r%   r,   r   r   r   _check_emptyg   s   r3   c           
      C   sT   |st dt|  \}}}}t|||| |d}	t||	d| ||	|d |S )z$Generate key + iv and return cipher.zKey is password-protected.TN)r%   _SSH_CIPHERSr   r   )

ciphernamepasswordsaltroundsbackendZalgoZkey_lenmodeZiv_lenseedr   r   r   _init_cipherm   s
   $r<   c                 C   6   t | dk r
tdt| dd d | dd fS )ZUint32   Invalid dataNr   )r0   r%   _U32unpackr2   r   r   r   _get_u32w      "rB   c                 C   r=   )ZUint64   r?   Nr   )r0   r%   _U64rA   r2   r   r   r   _get_u64~   rC   rF   c                 C   s8   t | \}} |t| krtd| d| | |d fS )zBytes with u32 length prefixr?   N)rB   r0   r%   )r,   nr   r   r   _get_sshstr   s   rH   c                 C   s8   t | \}} |rt|ddkrtdt|d| fS )zBig integer.r      r?   big)rH   six
indexbytesr%   r   Zint_from_bytes)r,   valr   r   r   
_get_mpint   s   rN   c                 C   s4   | dk rt d| sdS |  d d }t| |S )z!Storage format for signed bigint.r   znegative mpint not allowedr)   rD   )r%   
bit_lengthr   Zint_to_bytes)rM   nbytesr   r   r   	_to_mpint   s   rQ   c                   @   sT   e Zd ZdZdddZdd Zdd Zd	d
 Zdd Zdd Z	dddZ
dd ZdS )	_FragListz,Build recursive structure without data copy.Nc                 C   s   g | _ |r| j | d S d S N)flistextend)selfinitr   r   r   __init__   s   z_FragList.__init__c                 C   s   | j | dS )zAdd plain bytesN)rT   appendrV   rM   r   r   r   put_raw      z_FragList.put_rawc                 C   s   | j t| dS )zBig-endian uint32N)rT   rY   r@   packrZ   r   r   r   put_u32   s   z_FragList.put_u32c                 C   sN   t |tttfr| t| | j| dS | |  | j	|j dS )zBytes prefixed with u32 lengthN)

isinstancebytes
memoryview	bytearrayr^   r0   rT   rY   sizerU   rZ   r   r   r   
put_sshstr   s
   z_FragList.put_sshstrc                 C   s   |  t| dS )z*Big-endian bigint prefixed with u32 lengthN)rd   rQ   rZ   r   r   r   	put_mpint   s   z_FragList.put_mpintc                 C   s   t tt| jS )zCurrent number of bytes)summapr0   rT   )rV   r   r   r   rc      r\   z_FragList.sizer   c                 C   s2   | j D ]}t|}||| }}||||< q|S )zWrite into bytearray)rT   r0   )rV   ZdstbufposfragZflenstartr   r   r   render   s
   
z_FragList.renderc                 C   s"   t t|  }| | | S )zReturn as bytes)ra   rb   rc   rk   tobytes)rV   bufr   r   r   rl      s   
z_FragList.tobytesrS   )r   )__name__
__module____qualname____doc__rX   r[   r^   rd   re   rc   rk   rl   r   r   r   r   rR      s    
	
rR   c                   @   8   e Zd ZdZdd Zdd Zdd Zdd	 Zd
d ZdS )_SSHFormatRSAzhFormat for RSA keys.

    Public:
        mpint e, n
    Private:
        mpint n, e, d, iqmp, p, q
    c                 C   s$   t |\}}t |\}}||f|fS )zRSA public fieldsrN   )rV   r,   erG   r   r   r   
get_public   s   z_SSHFormatRSA.get_publicc                 C   s0   |  |\\}}}t||}||}||fS )zMake RSA public key from data.)rv   r   RSAPublicNumbersr&   )rV   key_typer,   r9   ru   rG   public_numbersr&   r   r   r   load_public   s   
z_SSHFormatRSA.load_publicc              	   C   s   t |\}}t |\}}t |\}}t |\}}t |\}}t |\}	}||f|kr.tdt||}
t||	}t||}t||	||
|||}||}||fS )zMake RSA private key from data.z Corrupt data: rsa field mismatch)rN   r%   r   Zrsa_crt_dmp1Zrsa_crt_dmq1rw   ZRSAPrivateNumbersprivate_key)rV   r,   	pubfieldsr9   rG   ru   diqmppqZdmp1Zdmq1ry   private_numbersr{   r   r   r   load_private   s    
z_SSHFormatRSA.load_privatec                 C   s$   |  }||j ||j dS )zWrite RSA public keyN)ry   re   ru   rG   )rV   r&   f_pubZpubnr   r   r   encode_public   s   z_SSHFormatRSA.encode_publicc                 C   sZ   |  }|j}||j ||j ||j ||j ||j ||j dS )zWrite RSA private keyN)	r   ry   re   rG   ru   r}   r~   r   r   )rV   r{   f_privr   ry   r   r   r   encode_private   s   z_SSHFormatRSA.encode_privateN	rn   ro   rp   rq   rv   rz   r   r   r   r   r   r   r   rs      s    rs   c                   @   @   e Zd ZdZdd Zdd Zdd Zdd	 Zd
d Zdd Z	dS )_SSHFormatDSAzhFormat for DSA keys.

    Public:
        mpint p, q, g, y
    Private:
        mpint p, q, g, y, x
    c                 C   s@   t |\}}t |\}}t |\}}t |\}}||||f|fS )zDSA public fieldsrt   )rV   r,   r   r   gyr   r   r   rv     s
   z_SSHFormatDSA.get_publicc                 C   sL   |  |\\}}}}}t|||}t||}	| |	 |	|}
|
|fS )zMake DSA public key from data.)rv   r	   DSAParameterNumbersDSAPublicNumbers	_validater&   )rV   rx   r,   r9   r   r   r   r   parameter_numbersry   r&   r   r   r   rz     s   

z_SSHFormatDSA.load_publicc                 C   s|   |  |\\}}}}}t|\}}||||f|krtdt|||}	t||	}
| |
 t||
}||}||fS )zMake DSA private key from data.z Corrupt data: dsa field mismatch)	rv   rN   r%   r	   r   r   r   ZDSAPrivateNumbersr{   )rV   r,   r|   r9   r   r   r   r   xr   ry   r   r{   r   r   r   r   '  s   

z_SSHFormatDSA.load_privatec                 C   sL   |  }|j}| | ||j ||j ||j ||j dS )zWrite DSA public keyN)ry   r   r   re   r   r   r   r   )rV   r&   r   ry   r   r   r   r   r   5  s   
z_SSHFormatDSA.encode_publicc                 C   s$   |  | | || j dS )zWrite DSA private keyN)r   r&   re   r   r   )rV   r{   r   r   r   r   r   @  s   z_SSHFormatDSA.encode_privatec                 C   s    |j }|j dkrtdd S )Ni   z#SSH supports only 1024 bit DSA keys)r   r   rO   r%   )rV   ry   r   r   r   r   r   E  s   z_SSHFormatDSA._validateN)
rn   ro   rp   rq   rv   rz   r   r   r   r   r   r   r   r   r     s    	r   c                   @   r   )_SSHFormatECDSAzFormat for ECDSA keys.

    Public:
        str curve
        bytes point
    Private:
        str curve
        bytes point
        mpint secret
    c                 C   s   || _ || _d S rS   )ssh_curve_namer"   )rV   r   r"   r   r   r   rX   W  s   
z_SSHFormatECDSA.__init__c                 C   sN   t |\}}t |\}}|| jkrtdt|ddkr!td||f|fS )zECDSA public fieldszCurve name mismatchr   r>   zNeed uncompressed point)rH   r   r%   rK   rL   NotImplementedError)rV   r,   r"   pointr   r   r   rv   [  s   
z_SSHFormatECDSA.get_publicc                 C   s.   |  |\\}}}tj| j| }||fS )z Make ECDSA public key from data.)rv   r
   EllipticCurvePublicKeyZfrom_encoded_pointr"   rl   )rV   rx   r,   r9   
curve_namer   r&   r   r   r   rz   e  s
   
z_SSHFormatECDSA.load_publicc                 C   sJ   |  |\\}}}t|\}}||f|krtdt|| j|}||fS )z!Make ECDSA private key from data.z"Corrupt data: ecdsa field mismatch)rv   rN   r%   r
   Zderive_private_keyr"   )rV   r,   r|   r9   r   r   secretr{   r   r   r   r   m  s   z_SSHFormatECDSA.load_privatec                 C   s*   | tjtj}|| j || dS )zWrite ECDSA public keyN)public_bytesr   ZX962r   ZUncompressedPointrd   r   )rV   r&   r   r   r   r   r   r   w  s
   z_SSHFormatECDSA.encode_publicc                 C   s,   |  }| }| || ||j dS )zWrite ECDSA private keyN)r&   r   r   re   Zprivate_value)rV   r{   r   r&   r   r   r   r   r     s   z_SSHFormatECDSA.encode_privateN)
rn   ro   rp   rq   rX   rv   rz   r   r   r   r   r   r   r   r   K  s    

r   c                   @   rr   )_SSHFormatEd25519z~Format for Ed25519 keys.

    Public:
        bytes point
    Private:
        bytes point
        bytes secret_and_point
    c                 C   s   t |\}}|f|fS )zEd25519 public fields)rH   )rV   r,   r   r   r   r   rv     s   
z_SSHFormatEd25519.get_publicc                 C   s(   |  |\\}}tj| }||fS )z"Make Ed25519 public key from data.)rv   r   Ed25519PublicKeyZfrom_public_bytesrl   )rV   rx   r,   r9   r   r&   r   r   r   rz     s
   z_SSHFormatEd25519.load_publicc           	      C   sb   |  |\\}}t|\}}|dd }|dd }||ks#|f|kr'tdtj|}||fS )z#Make Ed25519 private key from data.Nr!   z$Corrupt data: ed25519 field mismatch)rv   rH   r%   r   Ed25519PrivateKeyZfrom_private_bytes)	rV   r,   r|   r9   r   Zkeypairr   Zpoint2r{   r   r   r   r     s   z_SSHFormatEd25519.load_privatec                 C   s   | tjtj}|| dS )zWrite Ed25519 public keyN)r   r   Rawr   rd   )rV   r&   r   raw_public_keyr   r   r   r     s   z_SSHFormatEd25519.encode_publicc                 C   sR   |  }|tjtjt }|tjtj}t||g}| 	|| |
| dS )zWrite Ed25519 private keyN)r&   Zprivate_bytesr   r   r   r   r   r   rR   r   rd   )rV   r{   r   r&   Zraw_private_keyr   Z	f_keypairr   r   r   r     s   z _SSHFormatEd25519.encode_privateNr   r   r   r   r   r     s    	r   s   nistp256s   nistp384s   nistp521c                 C   s2   t | tst|  } | tv rt|  S td|  )z"Return valid format or throw errorzUnsupported key type: %r)r_   r`   ra   rl   _KEY_FORMATSr   )rx   r   r   r   _lookup_kformat  s
   
r   c                 C   sJ  t d|  t|}|durt d| t| }|std|d}|d}t	
t| || } | ts=tdt| ttd } t| \}} t| \}} t| \}} t| \}	} |	dkrgtdt| \}
} t|
\}}
t|}||
\}}
t|
 t| \}} t|  ||fttfkr| }|tvrtd| |tkrtd| t| d	 }t|| t|\}}t|\}}t| t||| ||}t| |}nd
}t|| t|\}}t|\}}||krtdt|\}}||krtd||||\}}t|\}}|tdt| kr#td|S )z.Load private key from OpenSSH custom encoding.r,   Nr6   zNot OpenSSH private key formatr   zOnly one key supportedzUnsupported cipher: %rzUnsupported KDF: %r   rD   zCorrupt data: broken checksumzCorrupt data: key type mismatchzCorrupt data: invalid padding)r   _check_bytesliker   _check_bytes_PEM_RCsearchr%   rj   endbinascii
a2b_base64ra   
startswith	_SK_MAGICr0   rH   rB   r   rv   r3   _NONErl   r4   r   _BCRYPTr1   r<   Z	decryptorupdater   _PADDING)r,   r6   r9   mp1p2r5   kdfnameZ
kdfoptionsnkeysZpubdataZpub_key_typekformatr|   Zedatablklenr7   Zkbufr8   ciphZck1Zck2rx   r{   commentr   r   r   load_ssh_private_key  sn   






r   c                 C   s>  |dur
t d| |rt|tkrtdt| tjr#t| 	 }nt| t
jr,t}nt| tjr5t}nt| tjr>t}ntdt|}t }|rst}t| d }t}t}td}	||	 || td}
t|||	||
}nt }}d}d}d}td	}d
}t }|| | | 	 | t||g}|| |!| | || |"t#d||$ |    t }|"t% || || || || || || |$ }|$ }t&t'|| }|(| || }|dur|) *||| ||d  t+|d| }t'||||< |S )z3Serialize private key with OpenSSH custom encoding.Nr6   zNPasswords longer than 72 bytes are not supported by OpenSSH private key formatUnsupported key typer   r   rD   r   r>   r)   ),r   r   r0   _MAX_PASSWORDr%   r_   r
   ZEllipticCurvePrivateKeyr'   r&   r   ZRSAPrivateKey_SSH_RSAr	   ZDSAPrivateKey_SSH_DSAr   r   _SSH_ED25519r   rR   _DEFAULT_CIPHERr4   r   _DEFAULT_ROUNDSosurandomrd   r^   r   r<   r   r   r   r[   r   rc   r   ra   rb   rk   Z	encryptorZupdate_intor/   )r{   r6   rx   r   Zf_kdfoptionsr5   r   r   r8   r7   r9   r   r   Zcheckvalr   Zf_public_keyZ	f_secretsZf_mainZslenmlenrm   Zofstxtr   r   r   serialize_ssh_private_key  sv   















 r   c              	   C   s|  t |}td|  t| }|std|d }}|d}d}t|tt d kr9d}|dtt  }t	|}z	t
t|} W n ttjfyT   tdw t| \}} ||krctd|rkt| \}	} ||| |\}
} |rt| \}} t| \}} t| \}} t| \}} t| \}} t| \}} t| \}} t| \}} t| \}} t| \}} t| \}} t|  |
S )	z-Load public key from OpenSSH one-line format.r,   zInvalid line formatr      FNTzInvalid key format)r   r   r   _SSH_PUBKEY_RCmatchr%   group_CERT_SUFFIXr0   r   ra   r   r   	TypeErrorErrorrH   rz   rF   rB   r3   )r,   r9   r   rx   Zorig_key_typeZkey_bodyZ	with_certr   Zinner_key_typeZnoncer&   serialZcctypeZkey_idZ
principalsZvalid_afterZvalid_beforeZcrit_options
extensionsreservedZsig_key	signaturer   r   r   load_ssh_public_keym  sJ   

r   c                 C   s   t | tjrt| }nt | tjrt}nt | tjrt	}nt | t
jr&t}ntdt|}t }|| || | t|  }d|d|gS )z&One-line public key format for OpenSSHr   r)       )r_   r
   r   r'   r   ZRSAPublicKeyr   r	   ZDSAPublicKeyr   r   r   r   r%   r   rR   rd   r   r   
b2a_base64rl   stripr*   )r&   rx   r   r   Zpubr   r   r   serialize_ssh_public_key  s   

r   rS   )^
__future__r   r   r   r   r   restructrK   cryptographyr   Zcryptography.exceptionsr   Zcryptography.hazmat.backendsr   Z)cryptography.hazmat.primitives.asymmetricr	   r
   r   r   Z&cryptography.hazmat.primitives.ciphersr   r   r   Z,cryptography.hazmat.primitives.serializationr   r   r   r   Zbcryptr   r   Z_bcrypt_supportedImportErrorbase64r   r+   r   r   r   r   Z_ECDSA_NISTP256Z_ECDSA_NISTP384Z_ECDSA_NISTP521r   compiler   r   Z	_SK_STARTZ_SK_ENDr   r   r   r   r   DOTALLr   ra   rb   ranger   ZAESZCTRZCBCr4   r$   Structr@   rE   r'   r/   r1   r3   r<   rB   rF   rH   rN   rQ   objectrR   rs   r   r   r   Z	SECP256R1Z	SECP384R1Z	SECP521R1r   r   r   r   r   r   r   r   r   r   <module>   s   





0>>=:

	
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O+