U
    ڲg                     @  s  U d dl 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Zd dlm	Z
 d dlm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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"m#Z#m$Z$m%Z% zd dl&m'Z( dZ)W n4 e*k
r"   dZ)ddddddddddZ(Y nX dZ+dZ,dZ-dZ.dZ/dZ0dZ1dZ2dZ3dZ4dZ5e6dZ7d Z8d!Z9d"Z:d#Z;d$Z<d%Z=d&Z>e6e9d' e: ej?Z@eAeBeCd(d)ZDeG d*d+ d+ZEeEejFd,ejGd&d&ddd-eEejFd,ejHd&d&ddd-eEejFd,ejId&d.d&dd-d/ZJd0eKd1< e.e/e0d2ZLd3dd4d5d6ZMd7dd8d9d:ZNe9d; e:d; fddddd<d=d>ZOddd?d@dAdBZPdd?dCdDdEZQddFdddGdHdIdJZRdKdLdCdMdNZSdKdLdCdOdPZTdKdQdCdRdSZUdKdLdCdTdUZVdddVdWdXZWG dYdZ dZZXG d[d\ d\ZYG d]d^ d^ZZG d_d` d`Z[G dadb dbZ\dQdcdddeZ]G dfdg dgZ^G dhdi diZ_e,eY e-eZ e+e\ e.e[dje` e/e[dkea e0e[dleb e2e^ e3e_ iZcddmdndoZdejeejfejgejhejif ZjdddFdpdqdrdsdtZkdqdduddvdwdxZlejeejmejnejoejpf Zqejeejmejnejpf ZrG dydz dzejsZtG d{d| d|Zud}d~dddZvddddCddZwdddCddZxdKddddZydddpddddZzddd8ddZ{ejeejfejgejif Z|dZ}G dd dZ~dS )    )annotationsN)encodebytes)	dataclass)utilsUnsupportedAlgorithm)hashes)dsaeced25519paddingrsa)AEADDecryptionContextCipher
algorithmsmodes)EncodingKeySerializationEncryptionNoEncryptionPrivateFormatPublicFormat_KeySerializationEncryption)kdfTFbytesintbool)passwordsaltdesired_key_bytesroundsignore_few_roundsreturnc                 C  s   t dd S )NzNeed bcrypt moduler   )r   r   r   r   r     r"   T/tmp/pip-unpacked-wheel-orgc96xl/cryptography/hazmat/primitives/serialization/ssh.py_bcrypt_kdf1   s    r$   s   ssh-ed25519s   ssh-rsas   ssh-dsss   ecdsa-sha2-nistp256s   ecdsa-sha2-nistp384s   ecdsa-sha2-nistp521s   -cert-v01@openssh.coms   sk-ssh-ed25519@openssh.coms"   sk-ecdsa-sha2-nistp256@openssh.coms   rsa-sha2-256s   rsa-sha2-512s   \A(\S+)[ \t]+(\S+)s   openssh-key-v1 s#   -----BEGIN OPENSSH PRIVATE KEY-----s!   -----END OPENSSH PRIVATE KEY-----s   bcrypts   none
   aes256-ctr   s   (.*?)      c                   @  sF   e Zd ZU ded< ded< ded< ded< ded< d	ed
< ded< dS )
_SSHCipherztype[algorithms.AES]algr   key_lenz3type[modes.CTR] | type[modes.CBC] | type[modes.GCM]mode	block_leniv_len
int | Nonetag_lenr   is_aeadN)__name__
__module____qualname____annotations__r"   r"   r"   r#   r)   \   s   
r)       )r*   r+   r,   r-   r.   r0   r1      )r%   s
   aes256-cbcs   aes256-gcm@openssh.comzdict[bytes, _SSHCipher]_SSH_CIPHERS)Z	secp256r1Z	secp384r1Z	secp521r1z&SSHPrivateKeyTypes | SSHPublicKeyTypes)keyr!   c                 C  s   t | tjrt|  }nft | tjr0t| }nPt | tjtjfrHt	}n8t | t
jt
jfr`t}n t | tjtjfrxt}ntd|S )NUnsupported key type)
isinstancer
   EllipticCurvePrivateKey_ecdsa_key_type
public_keyEllipticCurvePublicKeyr   RSAPrivateKeyRSAPublicKey_SSH_RSAr	   DSAPrivateKeyDSAPublicKey_SSH_DSAr   Ed25519PrivateKeyEd25519PublicKey_SSH_ED25519
ValueError)r9   key_typer"   r"   r#   _get_ssh_key_type   s    
 
rK   ec.EllipticCurvePublicKeyr>   r!   c                 C  s*   | j }|jtk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_TYPErI   )r>   rN   r"   r"   r#   r=      s    

r=      
)dataprefixsuffixr!   c                 C  s   d |t| |gS )N    )join_base64_encode)rR   rS   rT   r"   r"   r#   _ssh_pem_encode   s    rX   None)rR   r-   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)lenrI   )rR   r-   r"   r"   r#   _check_block_size   s    r[   rR   r!   c                 C  s   | rt ddS )z!All data should have been parsed.zCorrupt data: unparsed dataN)rI   rR   r"   r"   r#   _check_empty   s    r^   bytes | Nonez)Cipher[modes.CBC | modes.CTR | modes.GCM])
ciphernamer   r   r   r!   c                 C  sV   |st dt|  }t|||j|j |d}t||d|j |||jd S )z$Generate key + iv and return cipher.zKey is password-protected.TN)rI   r8   r$   r+   r.   r   r*   r,   )r`   r   r   r   ciphseedr"   r"   r#   _init_cipher   s      
  rc   
memoryviewztuple[int, memoryview]c                 C  s6   t | dk rtdtj| dd dd| dd fS )ZUint32   Invalid dataNbig	byteorderrZ   rI   r   
from_bytesr]   r"   r"   r#   _get_u32   s    rl   c                 C  s6   t | dk rtdtj| dd dd| dd fS )ZUint64   rf   Nrg   rh   rj   r]   r"   r"   r#   _get_u64   s    rn   ztuple[memoryview, memoryview]c                 C  s8   t | \}} |t| kr td| d| | |d fS )zBytes with u32 length prefixrf   N)rl   rZ   rI   )rR   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      rf   rg   )rp   rI   r   rk   )rR   valr"   r"   r#   
_get_mpint   s    rs   rr   r!   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 allowedrU   rm   )rI   
bit_lengthr   Zint_to_bytes)rr   nbytesr"   r"   r#   	_to_mpint   s    rw   c                   @  s   e Zd ZU dZded< d"ddddd	Zd
ddddZdddddZdddddZdddddZ	dddddZ
ddddZd#ddddddZd
dd d!ZdS )$	_FragListz,Build recursive structure without data copy.list[bytes]flistNzlist[bytes] | NonerY   )initr!   c                 C  s   g | _ |r| j | d S N)rz   extend)selfr{   r"   r"   r#   __init__   s    z_FragList.__init__r   rt   c                 C  s   | j | dS )zAdd plain bytesN)rz   appendr~   rr   r"   r"   r#   put_raw  s    z_FragList.put_rawr   c                 C  s   | j |jddd dS )zBig-endian uint32re   rg   lengthri   Nrz   r   to_bytesr   r"   r"   r#   put_u32	  s    z_FragList.put_u32c                 C  s   | j |jddd dS )zBig-endian uint64rm   rg   r   Nr   r   r"   r"   r#   put_u64  s    z_FragList.put_u64zbytes | _FragListc                 C  sL   t |tttfr,| t| | j| n| |  | j	|j dS )zBytes prefixed with u32 lengthN)
r;   r   rd   	bytearrayr   rZ   rz   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)r   rw   r   r"   r"   r#   	put_mpint  s    z_FragList.put_mpintr!   c                 C  s   t tt| jS )zCurrent number of bytes)summaprZ   rz   r~   r"   r"   r#   r     s    z_FragList.sizer   rd   )dstbufposr!   c                 C  s2   | j D ]&}t|}|||  }}||||< q|S )zWrite into bytearray)rz   rZ   )r~   r   r   fragZflenstartr"   r"   r#   render"  s
    
z_FragList.renderc                 C  s"   t t|  }| | | S )zReturn as bytes)rd   r   r   r   tobytes)r~   bufr"   r"   r#   r   *  s    
z_FragList.tobytes)N)r   )r2   r3   r4   __doc__r5   r   r   r   r   r   r   r   r   r   r"   r"   r"   r#   rx      s   
	rx   c                   @  sd   e Zd ZdZdddddZddddd	Zdd
dddZddddddZddddddZdS )_SSHFormatRSAzhFormat for RSA keys.

    Public:
        mpint e, n
    Private:
        mpint n, e, d, iqmp, p, q
    rd   z"tuple[tuple[int, int], memoryview]r\   c                 C  s$   t |\}}t |\}}||f|fS )zRSA public fieldsrs   )r~   rR   ero   r"   r"   r#   
get_public:  s    z_SSHFormatRSA.get_publicz#tuple[rsa.RSAPublicKey, memoryview]c                 C  s.   |  |\\}}}t||}| }||fS )zMake RSA public key from data.)r   r   RSAPublicNumbersr>   )r~   rR   r   ro   public_numbersr>   r"   r"   r#   load_publicB  s    z_SSHFormatRSA.load_publicz$tuple[rsa.RSAPrivateKey, memoryview]c              	   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   rI   r   Zrsa_crt_dmp1Zrsa_crt_dmq1r   ZRSAPrivateNumbersprivate_key)r~   rR   	pubfieldsro   r   diqmppqZdmp1Zdmq1r   private_numbersr   r"   r"   r#   load_privateK  s,          z_SSHFormatRSA.load_privatezrsa.RSAPublicKeyrx   rY   r>   f_pubr!   c                 C  s$   |  }||j ||j dS )zWrite RSA public keyN)r   r   r   ro   )r~   r>   r   Zpubnr"   r"   r#   encode_publica  s    z_SSHFormatRSA.encode_publiczrsa.RSAPrivateKeyr   f_privr!   c                 C  sZ   |  }|j}||j ||j ||j ||j ||j ||j dS )zWrite RSA private keyN)	r   r   r   ro   r   r   r   r   r   )r~   r   r   r   r   r"   r"   r#   encode_privatei  s    z_SSHFormatRSA.encode_privateN	r2   r3   r4   r   r   r   r   r   r   r"   r"   r"   r#   r   1  s   	r   c                   @  st   e Zd ZdZdddddZddddd	Zdd
dddZddddddZddddddZdddddZ	dS )_SSHFormatDSAzhFormat for DSA keys.

    Public:
        mpint p, q, g, y
    Private:
        mpint p, q, g, y, x
    rd   ztuple[tuple, memoryview]r\   c                 C  s@   t |\}}t |\}}t |\}}t |\}}||||f|fS )zDSA public fieldsr   )r~   rR   r   r   gyr"   r"   r#   r     s
    z_SSHFormatDSA.get_publicz#tuple[dsa.DSAPublicKey, memoryview]c           	      C  sJ   |  |\\}}}}}t|||}t||}| | | }||fS )zMake DSA public key from data.)r   r	   DSAParameterNumbersDSAPublicNumbers	_validater>   )	r~   rR   r   r   r   r   parameter_numbersr   r>   r"   r"   r#   r     s    
z_SSHFormatDSA.load_publicz$tuple[dsa.DSAPrivateKey, memoryview]c                 C  sz   |  |\\}}}}}t|\}}||||f|kr:tdt|||}t||}	| |	 t||	}
|
 }||fS )zMake DSA private key from data.z Corrupt data: dsa field mismatch)	r   rs   rI   r	   r   r   r   ZDSAPrivateNumbersr   )r~   rR   r   r   r   r   r   xr   r   r   r   r"   r"   r#   r     s    
z_SSHFormatDSA.load_privatezdsa.DSAPublicKeyrx   rY   r   c                 C  sL   |  }|j}| | ||j ||j ||j ||j dS )zWrite DSA public keyN)r   r   r   r   r   r   r   r   )r~   r>   r   r   r   r"   r"   r#   r     s    
z_SSHFormatDSA.encode_publiczdsa.DSAPrivateKeyr   c                 C  s$   |  | | || j dS )zWrite DSA private keyN)r   r>   r   r   r   )r~   r   r   r"   r"   r#   r     s    z_SSHFormatDSA.encode_privatezdsa.DSAPublicNumbers)r   r!   c                 C  s    |j }|j dkrtdd S )Ni   z#SSH supports only 1024 bit DSA keys)r   r   ru   rI   )r~   r   r   r"   r"   r#   r     s    z_SSHFormatDSA._validateN)
r2   r3   r4   r   r   r   r   r   r   r   r"   r"   r"   r#   r   y  s   r   c                   @  st   e Zd ZdZdddddZddd	d
dZddd	ddZddd	ddZddddddZddddddZ	dS )_SSHFormatECDSAzFormat for ECDSA keys.

    Public:
        str curve
        bytes point
    Private:
        str curve
        bytes point
        mpint secret
    r   ec.EllipticCurvessh_curve_namerN   c                 C  s   || _ || _d S r|   r   )r~   r   rN   r"   r"   r#   r     s    z_SSHFormatECDSA.__init__rd   z0tuple[tuple[memoryview, memoryview], memoryview]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   re   zNeed uncompressed point)rp   r   rI   NotImplementedError)r~   rR   rN   pointr"   r"   r#   r     s    
z_SSHFormatECDSA.get_public,tuple[ec.EllipticCurvePublicKey, memoryview]c                 C  s.   |  |\\}}}tj| j| }||fS z Make ECDSA public key from data.)r   r
   r?   Zfrom_encoded_pointrN   r   )r~   rR   _r   r>   r"   r"   r#   r     s     z_SSHFormatECDSA.load_publicz-tuple[ec.EllipticCurvePrivateKey, memoryview]c                 C  sH   |  |\\}}}t|\}}||f|kr2tdt|| j}||fS )z!Make ECDSA private key from data.z"Corrupt data: ecdsa field mismatch)r   rs   rI   r
   Zderive_private_keyrN   )r~   rR   r   Z
curve_namer   secretr   r"   r"   r#   r     s    z_SSHFormatECDSA.load_privaterL   rx   rY   r   c                 C  s*   | tjtj}|| j || dS )zWrite ECDSA public keyN)public_bytesr   ZX962r   ZUncompressedPointr   r   )r~   r>   r   r   r"   r"   r#   r     s     z_SSHFormatECDSA.encode_publiczec.EllipticCurvePrivateKeyr   c                 C  s,   |  }| }| || ||j dS )zWrite ECDSA private keyN)r>   r   r   r   Zprivate_value)r~   r   r   r>   r   r"   r"   r#   r     s    z_SSHFormatECDSA.encode_privateN)
r2   r3   r4   r   r   r   r   r   r   r   r"   r"   r"   r#   r     s   

r   c                   @  sd   e Zd ZdZdddddZddddd	Zdd
dddZddddddZddddddZdS )_SSHFormatEd25519z~Format for Ed25519 keys.

    Public:
        bytes point
    Private:
        bytes point
        bytes secret_and_point
    rd   z$tuple[tuple[memoryview], memoryview]r\   c                 C  s   t |\}}|f|fS )zEd25519 public fields)rp   )r~   rR   r   r"   r"   r#   r     s    z_SSHFormatEd25519.get_public+tuple[ed25519.Ed25519PublicKey, memoryview]c                 C  s(   |  |\\}}tj| }||fS z"Make Ed25519 public key from data.)r   r   rG   Zfrom_public_bytesr   )r~   rR   r   r>   r"   r"   r#   r     s
    z_SSHFormatEd25519.load_publicz,tuple[ed25519.Ed25519PrivateKey, memoryview]c                 C  sb   |  |\\}}t|\}}|dd }|dd }||ksF|f|krNtdtj|}||fS )z#Make Ed25519 private key from data.Nr6   z$Corrupt data: ed25519 field mismatch)r   rp   rI   r   rF   Zfrom_private_bytes)r~   rR   r   r   Zkeypairr   Zpoint2r   r"   r"   r#   r   !  s    z_SSHFormatEd25519.load_privatezed25519.Ed25519PublicKeyrx   rY   r   c                 C  s   | tjtj}|| dS )zWrite Ed25519 public keyN)r   r   Rawr   r   )r~   r>   r   raw_public_keyr"   r"   r#   r   /  s
     z_SSHFormatEd25519.encode_publiczed25519.Ed25519PrivateKeyr   c                 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   rx   r   r   )r~   r   r   r>   Zraw_private_keyr   Z	f_keypairr"   r"   r#   r   8  s       z _SSHFormatEd25519.encode_privateNr   r"   r"   r"   r#   r     s   	
	r   r   c                 C  s2   t | \}} | ds*td| d|| fS )z!
    U2F application strings
    s   ssh:z4U2F application string does not start with b'ssh:' ())rp   r   
startswithrI   )rR   Zapplicationr"   r"   r#   load_applicationI  s    
r   c                   @  s    e Zd ZdZdddddZdS )_SSHFormatSKEd25519z
    The format of a sk-ssh-ed25519@openssh.com public key is:

        string		"sk-ssh-ed25519@openssh.com"
        string		public key
        string		application (user-specified, but typically "ssh:")
    rd   r   r\   c                 C  s&   t t|\}}t|\}}||fS r   )_lookup_kformatrH   r   r   r~   rR   r>   r   r"   r"   r#   r   _  s    z_SSHFormatSKEd25519.load_publicNr2   r3   r4   r   r   r"   r"   r"   r#   r   V  s   r   c                   @  s    e Zd ZdZdddddZdS )_SSHFormatSKECDSAz
    The format of a sk-ecdsa-sha2-nistp256@openssh.com public key is:

        string		"sk-ecdsa-sha2-nistp256@openssh.com"
        string		curve name
        ec_point	Q
        string		application (user-specified, but typically "ssh:")
    rd   r   r\   c                 C  s&   t t|\}}t|\}}||fS r   )r   _ECDSA_NISTP256r   r   r   r"   r"   r#   r   r  s    z_SSHFormatSKECDSA.load_publicNr   r"   r"   r"   r#   r   h  s   	r   s   nistp256s   nistp384s   nistp521rJ   c                 C  s8   t | tst|  } | tkr&t|  S td| dS )z"Return valid format or throw errorzUnsupported key type: N)r;   r   rd   r   _KEY_FORMATSr   r   r"   r"   r#   r     s
    
r   z
typing.AnySSHPrivateKeyTypes)rR   r   backendr!   c                 C  s  t d|  |dk	r t d| t| }|s6td|d}|d}t	t
| || } | tsrtdt
| ttd } t| \}} t| \}} t| \}} t| \}	} |	dkrtdt| \}
} t|
\}}
t|}||
\}}
t|
 ||fttfkr&| }|tkr.td||tkrFtd|t| j}t| j}t| \}} t| jrt| }t||krtd	nt|  t|| t|\}}t|\}}t| t||| |}| }t
||}t| jrt |t!st"t|#| nt|$  n"t| \}} t|  d
}t|| t|\}}t|\}}||krrtdt|\}}||krtd|%||\}}t|\}}|t&dt| krtdt |t'j(rt)j*dt j+dd |S )z.Load private key from OpenSSH custom encoding.rR   Nr   zNot OpenSSH private key formatr'   zOnly one key supportedzUnsupported cipher: zUnsupported KDF: z+Corrupt data: invalid tag length for cipherrm   zCorrupt data: broken checksumzCorrupt data: key type mismatchzCorrupt data: invalid paddingDSSH DSA keys are deprecated and will be removed in a future release.   
stacklevel),r   _check_byteslike_check_bytes_PEM_RCsearchrI   r   endbinascii
a2b_base64rd   r   	_SK_MAGICrZ   rp   rl   r   r   r^   _NONEr   r8   r   _BCRYPTr-   r0   r1   r   r[   rc   Z	decryptorupdater;   r   AssertionErrorZfinalize_with_tagfinalizer   _PADDINGr	   rC   warningswarnDeprecatedIn40)rR   r   r   mp1p2r`   kdfnameZ
kdfoptionsnkeysZpubdataZpub_key_typekformatr   Zciphername_bytesblklenr0   Zedatatagr   Zkbufr   ra   decZck1Zck2rJ   r   r   r"   r"   r#   load_ssh_private_key  s    












r   r   )r   r   encryption_algorithmr!   c                 C  s  t d| t| tjr*tjdt jdd t| }t	|}t
 }|rt}t| j}t}t}	t|trt|jdk	rt|j}	td}
||
 ||	 t|||
|	}nt }}d}d}d}td}d	}t
 }|| ||  | t
||g}|| || | || |td|| |    t
 }|t || || || || || || | }| }tt || }|!| || }|dk	r|" #||| ||d  t$|d| S )
z3Serialize private key with OpenSSH custom encoding.r   ISSH DSA key support is deprecated and will be removed in a future releasere   r   Nr&   rm   r'   rU   )%r   r   r;   r	   rC   r   r   r   rK   r   rx   _DEFAULT_CIPHERr8   r-   r   _DEFAULT_ROUNDSr   Z_kdf_roundsosurandomr   r   rc   r   r   r>   r   r   r   r   r   rd   r   r   Z	encryptorZupdate_intorX   )r   r   r   rJ   r   Zf_kdfoptionsr`   r   r   r   r   ra   r   ZcheckvalcommentZf_public_keyZ	f_secretsZf_mainslenmlenr   Zofsr"   r"   r#   _serialize_ssh_private_key   sl    
















 r   c                   @  s   e Zd ZdZdZdS )SSHCertificateTyper'   r   N)r2   r3   r4   USERZHOSTr"   r"   r"   r#   r   [  s   r   c                   @  s  e Zd Zdddddddddddddddddddd	Zedd
ddZdd
ddZedd
ddZedd
ddZedd
ddZ	edd
ddZ
edd
ddZedd
ddZedd
ddZedd
dd Zdd
d!d"Zdd
d#d$Zd%d
d&d'Zd(S ))SSHCertificaterd   SSHPublicKeyTypesr   ry   dict[bytes, bytes]r   )_nonce_public_key_serial_cctype_key_id_valid_principals_valid_after_valid_before_critical_options_extensions	_sig_type_sig_key_inner_sig_type
_signature_tbs_cert_body_cert_key_type
_cert_bodyc                 C  s   || _ || _|| _zt|| _W n tk
r<   tdY nX || _|| _|| _|| _	|	| _
|
| _|| _|| _|| _|| _|| _|| _|| _d S )NzInvalid certificate type)r  r  r  r   _typerI   r  r  r  r	  r
  r  r  r  r  r  r  r  r  )r~   r  r  r  r  r  r  r  r	  r
  r  r  r  r  r  r  r  r  r"   r"   r#   r   a  s(    zSSHCertificate.__init__r   c                 C  s
   t | jS r|   )r   r  r   r"   r"   r#   nonce  s    zSSHCertificate.nonceSSHCertPublicKeyTypesc                 C  s   t t| jS r|   )typingcastr  r  r   r"   r"   r#   r>     s    zSSHCertificate.public_keyc                 C  s   | j S r|   )r  r   r"   r"   r#   serial  s    zSSHCertificate.serialr   c                 C  s   | j S r|   )r  r   r"   r"   r#   type  s    zSSHCertificate.typec                 C  s
   t | jS r|   )r   r  r   r"   r"   r#   key_id  s    zSSHCertificate.key_idc                 C  s   | j S r|   )r  r   r"   r"   r#   valid_principals  s    zSSHCertificate.valid_principalsc                 C  s   | j S r|   )r	  r   r"   r"   r#   valid_before  s    zSSHCertificate.valid_beforec                 C  s   | j S r|   )r  r   r"   r"   r#   valid_after  s    zSSHCertificate.valid_afterc                 C  s   | j S r|   )r
  r   r"   r"   r#   critical_options  s    zSSHCertificate.critical_optionsc                 C  s   | j S r|   )r  r   r"   r"   r#   
extensions  s    zSSHCertificate.extensionsc                 C  s&   t | j}|| j\}}t| |S r|   )r   r  r   r  r^   )r~   Z	sigformatsignature_keyZsigkey_restr"   r"   r#   r     s    
zSSHCertificate.signature_keyc                 C  s"   t | jd tjt | jdd S )N    F)newline)r   r  r   
b2a_base64r  r   r"   r"   r#   r     s    zSSHCertificate.public_bytesrY   c                 C  s   |   }t|tjr.|t| jt| j nt|tj	rt
| j\}}t
|\}}t| t||}t|j}||t| jt| nnt|tjst| jtkrt }n*| jtkrt }n| jtkstt }|t| jt| jt | d S r|   )r   r;   r   rG   verifyr   r  r  r
   r?   rs   r^   
asym_utilsZencode_dss_signature_get_ec_hash_algrN   ECDSAr   rA   r   r  rB   r   SHA1_SSH_RSA_SHA256SHA256_SSH_RSA_SHA512SHA512r   PKCS1v15)r~   r   rrR   sZcomputed_sighash_algr"   r"   r#   verify_cert_signature  s<     
  



z$SSHCertificate.verify_cert_signatureN)r2   r3   r4   r   propertyr  r>   r  r  r  r  r  r  r  r  r   r   r1  r"   r"   r"   r#   r   `  s.   .)r   r   zhashes.HashAlgorithm)rN   r!   c                 C  sD   t | tjrt S t | tjr(t S t | tjs8tt	 S d S r|   )
r;   r
   	SECP256R1r   r*  	SECP384R1SHA384	SECP521R1r   r,  )rN   r"   r"   r#   r&    s    r&  z"SSHCertificate | SSHPublicKeyTypesc           "      C  s  t d|  t| }|s"td|d }}|d}d}|tr^d}|d tt  }|t	krr|srt
dt|}ztt|}W n" ttjfk
r   tdY nX |r|}	t|\}
}|
|krtd	|rt|\}}||\}}|rpt|\}}t|\}}t|\}}t|\}}g }|rPt|\}}|t| q,t|\}}t|\}}t|\}}t|}t|\}}t|}t|\}}t|\}}t|\}}|t	kr|st
d
|	d t|  }t|\}}t| t|\}} |tkr|tttfks,|tkr4||kr4tdt| \}!} t|  t||||||||||||||!|||	S t| |S d S )NrR   zInvalid line formatr'   r   FTz-DSA keys aren't supported in SSH certificateszInvalid formatzInvalid key formatz3DSA signatures aren't supported in SSH certificatesz!Signature key type does not match)r   r   _SSH_PUBKEY_RCmatchrI   groupendswith_CERT_SUFFIXrZ   rE   r   r   rd   r   r   	TypeErrorErrorrp   r   rn   rl   r   r   _parse_exts_optsr^   rB   r)  r+  r   )"rR   _legacy_dsa_allowedr   rJ   Zorig_key_typeZkey_bodyZ	with_certr   restZ	cert_bodyZinner_key_typer  r>   r  Zcctyper  Z
principalsr  Z	principalr  r  Zcrit_optionsr  extsr  r   Zsig_key_rawZsig_typeZsig_keyZtbs_cert_bodyZsignature_rawZinner_sig_typeZsig_rest	signaturer"   r"   r#   _load_ssh_public_identity  s    


rC  c                 C  s   t | S r|   )rC  r]   r"   r"   r#   load_ssh_public_identityJ  s    rD  r  )	exts_optsr!   c                 C  s   i }d }| rt | \}} t|}||kr0td|d k	rH||k rHtdt | \}} t|dkrt |\}}t|dkrtdt|||< |}q|S )NzDuplicate namezFields not lexically sortedr   z!Unexpected extra data after value)rp   r   rI   rZ   )rE  result	last_namerO   Zbnamevalueextrar"   r"   r#   r>  P  s"    r>  r   )rR   r   r!   c                 C  sF   t | dd}t|tr | }n|}t|tjrBtjdtj	dd |S )NT)r?  r   r   r   )
rC  r;   r   r>   r	   rD   r   r   r   r   )rR   r   Zcert_or_keyr>   r"   r"   r#   load_ssh_public_keyd  s    

rJ  c                 C  sl   t | tjrtjdtjdd t| }t|}t	 }|
| || | t|  }d|d|gS )z&One-line public key format for OpenSSHr   re   r   rU   r!  )r;   r	   rD   r   r   r   r   rK   r   rx   r   r   r   r#  r   striprV   )r>   rJ   r   r   Zpubr"   r"   r#   serialize_ssh_public_keyx  s    
rL     c                   @  s   e Zd Zddddg dddg g f
ddddddddd	d	d

ddZdd dddZdd dddZdd dddZdd dddZdd dddZd d! Z	d"d d#d$d%Z
d"d d&d'd(Zddd d)d*d+Zddd d)d,d-Zd.d/d0d1d2ZdS )3SSHCertificateBuilderNFzSSHCertPublicKeyTypes | Noner/   zSSHCertificateType | Noner_   ry   r   zlist[tuple[bytes, bytes]]
r  r  r  r  r  _valid_for_all_principalsr	  r  r
  r  c                 C  s@   || _ || _|| _|| _|| _|| _|| _|| _|	| _|
| _	d S r|   rO  )r~   r  r  r  r  r  rP  r	  r  r
  r  r"   r"   r#   r     s    zSSHCertificateBuilder.__init__r  rM   c                 C  s^   t |tjtjtjfstd| jd k	r0t	dt
|| j| j| j| j| j| j| j| j| jd
S )Nr:   zpublic_key already setrO  )r;   r
   r?   r   rA   r   rG   r<  r  rI   rN  r  r  r  r  rP  r	  r  r
  r  )r~   r>   r"   r"   r#   r>     s,    
z SSHCertificateBuilder.public_keyr   )r  r!   c                 C  sp   t |tstdd|  kr&dk s0n td| jd k	rBtdt| j|| j| j| j	| j
| j| j| j| jd
S )Nzserial must be an integerr               z"serial must be between 0 and 2**64zserial already setrO  )r;   r   r<  rI   r  rN  r  r  r  r  rP  r	  r  r
  r  )r~   r  r"   r"   r#   r    s$    

zSSHCertificateBuilder.serialr   )r  r!   c                 C  sR   t |tstd| jd k	r$tdt| j| j|| j| j	| j
| j| j| j| jd
S )Nz"type must be an SSHCertificateTypeztype already setrO  )r;   r   r<  r  rI   rN  r  r  r  r  rP  r	  r  r
  r  )r~   r  r"   r"   r#   r    s     

zSSHCertificateBuilder.typer   )r  r!   c                 C  sR   t |tstd| jd k	r$tdt| j| j| j|| j	| j
| j| j| j| jd
S )Nzkey_id must be byteszkey_id already setrO  )r;   r   r<  r  rI   rN  r  r  r  r  rP  r	  r  r
  r  )r~   r  r"   r"   r#   r    s     

zSSHCertificateBuilder.key_id)r  r!   c                 C  s|   | j rtdtdd |D r$|s,td| jr:tdt|tkrNtdt| j| j	| j
| j|| j | j| j| j| jd
S )NzDPrincipals can't be set because the cert is valid for all principalsc                 s  s   | ]}t |tV  qd S r|   )r;   r   ).0r   r"   r"   r#   	<genexpr>  s     z9SSHCertificateBuilder.valid_principals.<locals>.<genexpr>z5principals must be a list of bytes and can't be emptyzvalid_principals already setz:Reached or exceeded the maximum number of valid_principalsrO  )rP  rI   allr<  r  rZ   _SSHKEY_CERT_MAX_PRINCIPALSrN  r  r  r  r  r	  r  r
  r  )r~   r  r"   r"   r#   r    s:    z&SSHCertificateBuilder.valid_principalsc                 C  sJ   | j rtd| jrtdt| j| j| j| j| j d| j| j	| j
| jd
S )Nz@valid_principals already set, can't set valid_for_all_principalsz$valid_for_all_principals already setTrO  )r  rI   rP  rN  r  r  r  r  r	  r  r
  r  r   r"   r"   r#   valid_for_all_principals,  s$    z.SSHCertificateBuilder.valid_for_all_principalszint | float)r  r!   c                 C  sv   t |ttfstdt|}|dk s.|dkr6td| jd k	rHtdt| j| j| j	| j
| j| j|| j| j| jd
S )Nz$valid_before must be an int or floatr   rQ  zvalid_before must [0, 2**64)zvalid_before already setrO  )r;   r   floatr<  rI   r	  rN  r  r  r  r  r  rP  r  r
  r  )r~   r  r"   r"   r#   r  B  s&    
z"SSHCertificateBuilder.valid_before)r  r!   c                 C  sv   t |ttfstdt|}|dk s.|dkr6td| jd k	rHtdt| j| j| j	| j
| j| j| j|| j| jd
S )Nz#valid_after must be an int or floatr   rQ  zvalid_after must [0, 2**64)zvalid_after already setrO  )r;   r   rW  r<  rI   r  rN  r  r  r  r  r  rP  r	  r
  r  )r~   r  r"   r"   r#   r  X  s&    
z!SSHCertificateBuilder.valid_after)rO   rH  r!   c                 C  sr   t |trt |tstd|dd | jD kr8tdt| j| j| j| j	| j
| j| j| j| j||ff| jd
S )Nname and value must be bytesc                 S  s   g | ]\}}|qS r"   r"   rR  rO   r   r"   r"   r#   
<listcomp>t  s     z=SSHCertificateBuilder.add_critical_option.<locals>.<listcomp>zDuplicate critical option namerO  )r;   r   r<  r
  rI   rN  r  r  r  r  r  rP  r	  r  r  r~   rO   rH  r"   r"   r#   add_critical_optionn  s     z)SSHCertificateBuilder.add_critical_optionc                 C  sr   t |trt |tstd|dd | jD kr8tdt| j| j| j| j	| j
| j| j| j| j| j||ffd
S )NrX  c                 S  s   g | ]\}}|qS r"   r"   rY  r"   r"   r#   rZ    s     z7SSHCertificateBuilder.add_extension.<locals>.<listcomp>zDuplicate extension namerO  )r;   r   r<  r  rI   rN  r  r  r  r  r  rP  r	  r  r
  r[  r"   r"   r#   add_extension  s     z#SSHCertificateBuilder.add_extensionSSHCertPrivateKeyTypesr   )r   r!   c              	   C  s  t |tjtjtjfstd| jd kr0t	d| j
d kr>dn| j
}| jd krVt	d| jd krddn| j}| js~| js~t	d| jd krt	d| jd krt	d| j| jkrt	d	| jjd
d d | jjdd d t| j}|t }td}t|}t }|| || || j| || || jj || t }	| jD ]}
|	|
 qT||	  || j || j t }| jD ]L\}}|| t |dkrt }|| ||  n
|| q||  t }| jD ]L\}}|| t |dkr@t }|| ||  n
|| q ||  |d t|}t|}t }|| ||! | ||  t |tjr|"| }t }|| || ||  nt |tjrnt#|j$}|"| t%|}t&'|\}}t }|| t }|(| |(| ||  ||  nTt |tjst)t }|t* |"| t+, t-. }|| ||  t/0| 1 }t23t4t5d6|d|gS )NzUnsupported private key typezpublic_key must be setr   ztype must be setrU   zAvalid_principals must be set if valid_for_all_principals is Falsezvalid_before must be setzvalid_after must be setz-valid_after must be earlier than valid_beforec                 S  s   | d S Nr   r"   r   r"   r"   r#   <lambda>  rU   z,SSHCertificateBuilder.sign.<locals>.<lambda>)r9   c                 S  s   | d S r_  r"   r`  r"   r"   r#   ra    rU   r6   r!  )7r;   r
   r<   r   r@   r   rF   r<  r  rI   r  r  r  r  rP  r	  r  r
  sortr  rK   r;  r   r   r   rx   r   r   r   r   rH  r   rZ   r>   signr&  rN   r'  r%  Zdecode_dss_signaturer   r   r+  r   r-  r   r,  r   r#  rK  r  r  r   rD  rV   )r~   r   r  r  rJ   Zcert_prefixr  r   fZfprincipalsr   ZfcritrO   rH  ZfoptvalZfextZfextvalZca_typeZcaformatZcafrB  Zfsigr0  r.  r/  ZfsigblobZ	cert_datar"   r"   r#   rc    s    























  
zSSHCertificateBuilder.sign)r2   r3   r4   r   r>   r  r  r  r  rV  r  r  r\  r]  rc  r"   r"   r"   r#   rN    s,   "$rN  )F)N)F)N)
__future__r   r   enumr   rer  r   base64r   rW   Zdataclassesr   Zcryptographyr   Zcryptography.exceptionsr   Zcryptography.hazmat.primitivesr   Z)cryptography.hazmat.primitives.asymmetricr	   r
   r   r   r   r%  Z&cryptography.hazmat.primitives.ciphersr   r   r   r   Z,cryptography.hazmat.primitives.serializationr   r   r   r   r   r   Zbcryptr   r$   Z_bcrypt_supportedImportErrorrH   rB   rE   r   Z_ECDSA_NISTP384Z_ECDSA_NISTP521r;  Z_SK_SSH_ED25519Z_SK_SSH_ECDSA_NISTP256r)  r+  compiler7  r   Z	_SK_STARTZ_SK_ENDr   r   r   r   DOTALLr   rd   r   ranger   r)   ZAESZCTRZCBCZGCMr8   r5   rP   rK   r=   rX   r[   r^   rc   rl   rn   rp   rs   rw   rx   r   r   r   r   r   r   r   r3  r4  r6  r   r   Unionr<   r@   rC   rF   r   r   r   r?   rA   rD   rG   r   r  Enumr   r   r&  rC  rD  r>  rJ  rL  r^  rU  rN  r"   r"   r"   r#   <module>   s>    	  

		 
6HFGC        	 hM  _ 	