o
    
c]                     @   s  U 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mZmZ z
d dlmZ d	ZW n eyq   d
Z	
d`de de de!de!de"de fddZY nw dZ#dZ$dZ%dZ&dZ'dZ(dZ)e*dZ+dZ,dZ-dZ.dZ/dZ0d Z1d!Z2e*e-d" e. ej3Z4e5e6e7d#d$Z8ej9d%ej:d!fej9d%ej;d!fd&Z<ej=e ej>ej?ej9 e!ej@ej?ej: ej?ej; f e!f f eAd'< e&e'e(d(ZBd)ejCde fd*d+ZDe-d, e.d, fd-e d.e d/e de fd0d1ZEd-e d2e!ddfd3d4ZFd-e ddfd5d6ZGd7e dejHe  de de!deej@ej;ej:f  f
d8d9ZId-e5dej>e!e5f fd:d;ZJd-e5dej>e!e5f fd<d=ZKd-e5dej>e5e5f fd>d?ZLd-e5dej>e!e5f fd@dAZMdBe!de fdCdDZNG dEdF dFZOG dGdH dHZPG dIdJ dJZQG dKdL dLZRG dMdN dNZSe$eP e%eQ e#eS e&eRdOeT e'eRdPeU e(eRdQeV iZWdRe fdSdTZXej@ejYejZej[ej\f Z]	dad-e dejHe  dUej^de]fdVdWZ_dXe]de dYede fdZd[Z`ej@ejCejaejbejcf Zd	dad-e dUej^dedfd\d]Zed)edde fd^d_ZfdS )b    N)encodebytes)utilsUnsupportedAlgorithm)dsaeced25519rsa)Cipher
algorithmsmodes)EncodingKeySerializationEncryptionNoEncryptionPrivateFormatPublicFormat_KeySerializationEncryption)kdfTFpasswordsaltdesired_key_bytesroundsignore_few_roundsreturnc                 C   s   t d)NzNeed bcrypt moduler   )r   r   r   r   r    r   ]/opt/certbot/lib/python3.10/site-packages/cryptography/hazmat/primitives/serialization/ssh.py_bcrypt_kdf    s   r   s   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   s   (.*?)          )r   s
   aes256-cbc_SSH_CIPHERS)	secp256r1	secp384r1	secp521r1
public_keyc                 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: )curvename_ECDSA_KEY_TYPE
ValueError)r&   r'   r   r   r   _ecdsa_key_typeW   s   


r+      
dataprefixsuffixc                 C   s   d |t| |gS )N    )join_base64_encode)r-   r.   r/   r   r   r   _ssh_pem_encodea   s   r3   	block_lenc                 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-   r4   r   r   r   _check_block_sizei   s   r6   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_emptyo   s   r8   
ciphernamec           	      C   sR   |st dt|  \}}}}t|||| |d}t||d| |||d S )z$Generate key + iv and return cipher.zKey is password-protected.TN)r*   r"   r   r
   )	r9   r   r   r   algokey_lenmodeiv_lenseedr   r   r   _init_cipheru   s
   "r?   c                 C   6   t | dk r
tdtj| dd dd| dd fS )Uint32   Invalid dataNbig	byteorderr5   r*   int
from_bytesr7   r   r   r   _get_u32      "rJ   c                 C   r@   )Uint64   rC   NrD   rE   rG   r7   r   r   r   _get_u64   rK   rN   c                 C   s8   t | \}} |t| krtd| d| | |d fS )zBytes with u32 length prefixrC   N)rJ   r5   r*   )r-   nr   r   r   _get_sshstr   s   rP   c                 C   s4   t | \}} |r|d dkrtdt|d| fS )zBig integer.r      rC   rD   )rP   r*   rH   rI   )r-   valr   r   r   
_get_mpint   s   rS   rR   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 allowedr0   rM   )r*   
bit_lengthr   int_to_bytes)rR   nbytesr   r   r   	_to_mpint   s   rW   c                   @   s   e Zd ZU dZeje ed< 	ddejeje  ddfddZ	deddfd	d
Z
deddfddZdejed f ddfddZdeddfddZdefddZddededefddZdefddZdS )	_FragListz,Build recursive structure without data copy.flistNinitr   c                 C   s   g | _ |r| j | d S d S N)rY   extend)selfrZ   r   r   r   __init__   s   z_FragList.__init__rR   c                 C   s   | j | dS )zAdd plain bytesN)rY   appendr]   rR   r   r   r   put_raw      z_FragList.put_rawc                 C   s   | j |jddd dS )zBig-endian uint32rB   rD   )lengthrF   N)rY   r_   to_bytesr`   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	bytearrayre   r5   rY   r_   sizer\   r`   r   r   r   
put_sshstr   s
   z_FragList.put_sshstrc                 C   s   |  t| dS )z*Big-endian bigint prefixed with u32 lengthN)rk   rW   r`   r   r   r   	put_mpint   s   z_FragList.put_mpintc                 C   s   t tt| jS )zCurrent number of bytes)summapr5   rY   )r]   r   r   r   rj      rb   z_FragList.sizer   dstbufposc                 C   s2   | j D ]}t|}||| }}||||< q|S )zWrite into bytearray)rY   r5   )r]   ro   rp   fragflenstartr   r   r   render   s
   
z_FragList.renderc                 C   s"   t t|  }| | | S )zReturn as bytes)rh   ri   rj   rt   tobytes)r]   bufr   r   r   ru      s   
z_FragList.tobytesr[   )r   )__name__
__module____qualname____doc__typingListrg   __annotations__Optionalr^   ra   rH   re   Unionrk   rl   rj   rh   rt   ru   r   r   r   r   rX      s    
 
	rX   c                   @   s   e Zd ZdZdefddZdedejej	ef fddZ
dedejejef fdd	Zd
ej	deddfddZdejdeddfddZdS )_SSHFormatRSAzhFormat for RSA keys.

    Public:
        mpint e, n
    Private:
        mpint n, e, d, iqmp, p, q
    r-   c                 C   s$   t |\}}t |\}}||f|fS )zRSA public fieldsrS   )r]   r-   erO   r   r   r   
get_public   s   z_SSHFormatRSA.get_publicr   c                 C   s.   |  |\\}}}t||}| }||fS )zMake RSA public key from data.)r   r	   RSAPublicNumbersr&   )r]   r-   r   rO   public_numbersr&   r   r   r   load_public   s   z_SSHFormatRSA.load_publicc              	   C   s   t |\}}t |\}}t |\}}t |\}}t |\}}t |\}}||f|kr.tdt||}	t||}
t||}t||||	|
||}| }||fS )zMake RSA private key from data.z Corrupt data: rsa field mismatch)rS   r*   r	   rsa_crt_dmp1rsa_crt_dmq1r   RSAPrivateNumbersprivate_key)r]   r-   	pubfieldsrO   r   diqmppqdmp1dmq1r   private_numbersr   r   r   r   load_private   s    z_SSHFormatRSA.load_privater&   f_pubNc                 C   s$   |  }||j ||j dS )zWrite RSA public keyN)r   rl   r   rO   )r]   r&   r   pubnr   r   r   encode_public  s   z_SSHFormatRSA.encode_publicr   f_privc                 C   sZ   |  }|j}||j ||j ||j ||j ||j ||j dS )zWrite RSA private keyN)	r   r   rl   rO   r   r   r   r   r   )r]   r   r   r   r   r   r   r   encode_private  s   z_SSHFormatRSA.encode_private)rw   rx   ry   rz   rh   r   r{   Tupler	   RSAPublicKeyr   RSAPrivateKeyr   rX   r   r   r   r   r   r   r      s6    
	

r   c                   @   s   e Zd ZdZdedejejef fddZdedejej	ef fddZ
dedejejef fdd	Zd
ej	deddfddZdejdeddfddZdejddfddZdS )_SSHFormatDSAzhFormat for DSA keys.

    Public:
        mpint p, q, g, y
    Private:
        mpint p, q, g, y, x
    r-   r   c                 C   s@   t |\}}t |\}}t |\}}t |\}}||||f|fS )zDSA public fieldsr   )r]   r-   r   r   gyr   r   r   r   /  s
   z_SSHFormatDSA.get_publicc           	      C   sJ   |  |\\}}}}}t|||}t||}| | | }||fS )zMake DSA public key from data.)r   r   DSAParameterNumbersDSAPublicNumbers	_validater&   )	r]   r-   r   r   r   r   parameter_numbersr   r&   r   r   r   r   9  s   
z_SSHFormatDSA.load_publicc                 C   sz   |  |\\}}}}}t|\}}||||f|krtdt|||}t||}	| |	 t||	}
|
 }||fS )zMake DSA private key from data.z Corrupt data: dsa field mismatch)	r   rS   r*   r   r   r   r   DSAPrivateNumbersr   )r]   r-   r   r   r   r   r   xr   r   r   r   r   r   r   r   D  s   
z_SSHFormatDSA.load_privater&   r   Nc                 C   sL   |  }|j}| | ||j ||j ||j ||j dS )zWrite DSA public keyN)r   r   r   rl   r   r   r   r   )r]   r&   r   r   r   r   r   r   r   T  s   
z_SSHFormatDSA.encode_publicr   r   c                 C   s$   |  | | || j dS )zWrite DSA private keyN)r   r&   rl   r   r   )r]   r   r   r   r   r   r   a  s   z_SSHFormatDSA.encode_privater   c                 C   s    |j }|j dkrtdd S )Ni   z#SSH supports only 1024 bit DSA keys)r   r   rT   r*   )r]   r   r   r   r   r   r   h  s   z_SSHFormatDSA._validate)rw   rx   ry   rz   rh   r{   r   r   r   DSAPublicKeyr   DSAPrivateKeyr   rX   r   r   r   r   r   r   r   r   r   &  s@    





r   c                   @   s   e Zd ZdZdedejfddZdede	j
e	j
ef fdd	Zdede	j
ejef fd
dZdede	j
ejef fddZdejdeddfddZdejdeddfddZdS )_SSHFormatECDSAzFormat for ECDSA keys.

    Public:
        str curve
        bytes point
    Private:
        str curve
        bytes point
        mpint secret
    ssh_curve_namer'   c                 C   s   || _ || _d S r[   )r   r'   )r]   r   r'   r   r   r   r^   z  s   
z_SSHFormatECDSA.__init__r-   r   c                 C   sJ   t |\}}t |\}}|| jkrtd|d dkrtd||f|fS )zECDSA public fieldszCurve name mismatchr   rB   zNeed uncompressed point)rP   r   r*   NotImplementedError)r]   r-   r'   pointr   r   r   r   ~  s   
z_SSHFormatECDSA.get_publicc                 C   s.   |  |\\}}}tj| j| }||fS )z Make ECDSA public key from data.)r   r   EllipticCurvePublicKeyfrom_encoded_pointr'   ru   )r]   r-   
curve_namer   r&   r   r   r   r     s
   
z_SSHFormatECDSA.load_publicc                 C   sH   |  |\\}}}t|\}}||f|krtdt|| j}||fS )z!Make ECDSA private key from data.z"Corrupt data: ecdsa field mismatch)r   rS   r*   r   derive_private_keyr'   )r]   r-   r   r   r   secretr   r   r   r   r     s   z_SSHFormatECDSA.load_privater&   r   Nc                 C   s*   | tjtj}|| j || dS )zWrite ECDSA public keyN)public_bytesr   X962r   UncompressedPointrk   r   )r]   r&   r   r   r   r   r   r     s
   z_SSHFormatECDSA.encode_publicr   r   c                 C   s,   |  }| }| || ||j dS )zWrite ECDSA private keyN)r&   r   r   rl   private_value)r]   r   r   r&   r   r   r   r   r     s   z_SSHFormatECDSA.encode_private)rw   rx   ry   rz   rg   r   EllipticCurver^   rh   r{   r   r   r   r   EllipticCurvePrivateKeyr   rX   r   r   r   r   r   r   r   n  s@    





r   c                   @   s   e Zd ZdZdedejejef fddZdedejej	ef fddZ
dedejejef fdd	Zd
ej	deddfddZdejdeddfddZdS )_SSHFormatEd25519z~Format for Ed25519 keys.

    Public:
        bytes point
    Private:
        bytes point
        bytes secret_and_point
    r-   r   c                 C   s   t |\}}|f|fS )zEd25519 public fields)rP   )r]   r-   r   r   r   r   r     s   
z_SSHFormatEd25519.get_publicc                 C   s(   |  |\\}}tj| }||fS )z"Make Ed25519 public key from data.)r   r   Ed25519PublicKeyfrom_public_bytesru   )r]   r-   r   r&   r   r   r   r     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)r   rP   r*   r   Ed25519PrivateKeyfrom_private_bytes)r]   r-   r   r   keypairr   point2r   r   r   r   r     s   z_SSHFormatEd25519.load_privater&   r   Nc                 C   s   | tjtj}|| dS )zWrite Ed25519 public keyN)r   r   Rawr   rk   )r]   r&   r   raw_public_keyr   r   r   r     s   z_SSHFormatEd25519.encode_publicr   r   c                 C   sR   |  }|tjtjt }|tjtj}t||g}| 	|| |
| dS )zWrite Ed25519 private keyN)r&   private_bytesr   r   r   r   r   r   rX   r   rk   )r]   r   r   r&   raw_private_keyr   	f_keypairr   r   r   r     s   z _SSHFormatEd25519.encode_private)rw   rx   ry   rz   rh   r{   r   r   r   r   r   r   r   rX   r   r   r   r   r   r   r     s>    	




	r   s   nistp256s   nistp384s   nistp521key_typec                 C   s4   t | tst|  } | tv rt|  S td| )z"Return valid format or throw errorzUnsupported key type: )rf   rg   rh   ru   _KEY_FORMATSr   )r   r   r   r   _lookup_kformat  s
   
r   backendc                 C   sB  t d|  |durt d| t| }|std|d}|d}t	t
| || } | ts9tdt
| ttd } t| \}} t| \}} t| \}} t| \}	} |	dkrct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-   Nr   zNot OpenSSH private key formatr   zOnly one key supportedzUnsupported cipher: zUnsupported KDF:    rM   zCorrupt data: broken checksumzCorrupt data: key type mismatchzCorrupt data: invalid padding)r   _check_byteslike_check_bytes_PEM_RCsearchr*   rs   endbinascii
a2b_base64rh   
startswith	_SK_MAGICr5   rP   rJ   r   r   r8   _NONEru   r"   r   _BCRYPTr6   r?   	decryptorupdater   _PADDING)r-   r   r   mp1p2r9   kdfname
kdfoptionsnkeyspubdatapub_key_typekformatr   edataciphername_bytesblklenr   kbufr   ciphck1ck2r   r   commentr   r   r   load_ssh_private_key  sl   






r   r   encryption_algorithmc                 C   s  t d| 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 }|rkt}t| d }t}t}	t|trT|jdurT|j}	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| S )
z3Serialize private key with OpenSSH custom encoding.r   Unsupported key typer   Nr   rM   r   rB   r0   )+r   r   rf   r   r   r+   r&   r	   r   _SSH_RSAr   r   _SSH_DSAr   r   _SSH_ED25519r*   r   rX   _DEFAULT_CIPHERr"   r   _DEFAULT_ROUNDSr   _kdf_roundsosurandomrk   re   r?   r   r   r   ra   r   rj   r   rh   ri   rt   	encryptorupdate_intor3   )r   r   r   r   r   f_kdfoptionsr9   r   r   r   r   r   r   checkvalr   f_public_key	f_secretsf_mainslenmlenrv   ofsr   r   r   _serialize_ssh_private_key`  sp   















 r   c              	   C   sp  t d|  t| }|std|d }}|d}d}t|tt d kr5d}|dtt  }t|}z	t	t
|}W n tt
jfyP   tdw t|\}	}|	|kr_td|rgt|\}
}||\}}|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   _SSH_PUBKEY_RCmatchr*   group_CERT_SUFFIXr5   r   rh   r   r   	TypeErrorErrorrP   r   rN   rJ   r8   )r-   r   r   r   orig_key_typekey_body	with_certr   restinner_key_typenoncer&   serialcctypekey_id
principalsvalid_aftervalid_beforecrit_options
extensionsreservedsig_key	signaturer   r   r   load_ssh_public_key  sH   

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   r0       )rf   r   r   r+   r	   r   r   r   r   r   r   r   r   r*   r   rX   rk   r   r   
b2a_base64ru   stripr1   )r&   r   r   r   pubr   r   r   serialize_ssh_public_key  s   

r  )Fr[   )gr   r   rer{   base64r   r2   cryptographyr   cryptography.exceptionsr   )cryptography.hazmat.primitives.asymmetricr   r   r   r	   &cryptography.hazmat.primitives.ciphersr
   r   r   ,cryptography.hazmat.primitives.serializationr   r   r   r   r   r   bcryptr   r   _bcrypt_supportedImportErrorrg   rH   boolr   r   r   _ECDSA_NISTP256_ECDSA_NISTP384_ECDSA_NISTP521r   compiler   r   	_SK_START_SK_ENDr   r   r   r   DOTALLr   rh   ri   ranger   AESCTRCBCr"   Dictr   Typer   r}   r)   r   r+   r3   r6   r8   r~   r?   rJ   rN   rP   rS   rW   rX   r   r   r   r   	SECP256R1	SECP384R1	SECP521R1r   r   r   r   r   r   _SSH_PRIVATE_KEY_TYPESAnyr   r   r   r   r   _SSH_PUBLIC_KEY_TYPESr  r  r   r   r   r   <module>   s,  
 	




4FHGD
	
M
O	
,