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편집 파일: ssh.cpython-36.pyc
3 l�_�T � @ s� d dl mZmZmZ d dlZd dlZd dlZd dlZd dlZd dl m Z d dl m Z d dl mZ d dlmZmZmZmZ d dlmZmZmZ d dlmZmZmZm Z yd d l m Z d Z W n e!k r� d Z d d � Z Y nX yd dl"m#Z$ W n" e!k �r d dl"m%Z$ Y nX dZ&dZ'dZ(dZ)dZ*dZ+dZ,ej-d�Z.dZ/dZ0dZ1dZ2d Z3d Z4d Z5d Z6ej-e0d e1 ej7�Z8e9e:e;d!dS���Z<ej=d"ej>d fej=d"ej?d fd#�Z@e)e*e+d$�ZAejBd%�ZCejBd&�ZDd'd(� ZEe0d) e1d) fd*d+�ZFd,d-� ZGd.d/� ZHd0d1� ZId2d3� ZJd4d5� ZKd6d7� ZLd8d9� ZMd:d;� ZNG d<d=� d=eO�ZPG d>d?� d?eO�ZQG d@dA� dAeO�ZRG dBdC� dCeO�ZSG dDdE� dEeO�ZTe'eQ� e(eR� e&eT� e)eSdFejU� �e*eSdGejV� �e+eSdHejW� �iZXdIdJ� ZYdTdKdL�ZZdUdMdN�Z[dVdOdP�Z\dQdR� Z]dS )W� )�absolute_import�division�print_functionN)�utils)�UnsupportedAlgorithm)� _get_backend)�dsa�ec�ed25519�rsa)�Cipher� algorithms�modes)�Encoding� NoEncryption� PrivateFormat� PublicFormat)�kdfTFc O s t d��d S )NzNeed bcrypt module)r )�args�kwargs� r �/usr/lib64/python3.6/ssh.py� _bcrypt_kdf! s r )� encodebytes)� encodestrings ssh-ed25519s ssh-rsas ssh-dsss ecdsa-sha2-nistp256s ecdsa-sha2-nistp384s ecdsa-sha2-nistp521s -cert-v01@openssh.coms \A(\S+)[ \t]+(\S+)s openssh-key-v1 s# -----BEGIN OPENSSH PRIVATE KEY-----s! -----END OPENSSH PRIVATE KEY-----s bcrypts nones aes256-ctr� �H s (.*?)� � )s aes256-ctrs aes256-cbc)Z secp256r1Z secp384r1Z secp521r1s >Is >Qc C s( | j }|jtkr td|j ��t|j S )z3Return SSH key_type and curve_name for private key.z)Unsupported curve for ssh private key: %r)�curve�name�_ECDSA_KEY_TYPE� ValueError)� public_keyr r r r �_ecdsa_key_typeS s r$ � c C s dj |t| �|g�S )N� )�join�_base64_encode)�data�prefix�suffixr r r �_ssh_pem_encode] s r, c C s" | st | �| dkr td��dS )z Require data to be full blocksr z Corrupt data: missing paddingN)�lenr" )r) Z block_lenr r r �_check_block_sizea s r. c C s | r t d��dS )z!All data should have been parsed.zCorrupt data: unparsed dataN)r" )r) r r r � _check_emptyg s r/ c C sT |s t d��t| \}}}}t|||| |d�} t|| d|� �|| |d� �|�S )z$Generate key + iv and return cipher.zKey is password-protected.TN)r" � _SSH_CIPHERSr r ) � ciphername�password�salt�rounds�backendZalgoZkey_len�modeZiv_lenZseedr r r � _init_cipherm s r7 c C s6 t | �dk rtd��tj| dd� �d | dd� fS )ZUint32� z Invalid dataNr )r- r" �_U32�unpack)r) r r r �_get_u32w s r; c C s6 t | �dk rtd��tj| dd� �d | dd� fS )ZUint64� z Invalid dataNr )r- r" �_U64r: )r) r r r �_get_u64~ s r> c C s8 t | �\}} |t| �kr td��| d|� | |d� fS )z Bytes with u32 length prefixz Invalid dataN)r; r- r" )r) �nr r r � _get_sshstr� s r@ c C s8 t | �\}} |r(tj|d�dkr(td��tj|d�| fS )z Big integer.r � z Invalid dataZbig)r@ �six� indexbytesr" r Zint_from_bytes)r) �valr r r � _get_mpint� s rE c C s4 | dk rt d��| sdS | j� d d }tj| |�S )z!Storage format for signed bigint.r znegative mpint not allowedr& r< )r" � bit_lengthr Z int_to_bytes)rD �nbytesr r r � _to_mpint� s rH c @ sT e Zd ZdZddd�Zdd� Zdd� Zd d � Zd d � Zd d� Z ddd�Z dd� Z dS )� _FragListz,Build recursive structure without data copy.Nc C s g | _ |r| j j|� d S )N)�flist�extend)�selfZinitr r r �__init__� s z_FragList.__init__c C s | j j|� dS )zAdd plain bytesN)rJ �append)rL rD r r r �put_raw� s z_FragList.put_rawc C s | j jtj|�� dS )zBig-endian uint32N)rJ rN r9 �pack)rL rD r r r �put_u32� s z_FragList.put_u32c C sL t |tttf�r,| jt|�� | jj|� n | j|j� � | jj |j� dS )z Bytes prefixed with u32 lengthN) � isinstance�bytes� memoryview� bytearrayrQ r- rJ rN �sizerK )rL rD r r r � put_sshstr� s z_FragList.put_sshstrc C s | j t|�� dS )z*Big-endian bigint prefixed with u32 lengthN)rW rH )rL rD r r r � put_mpint� s z_FragList.put_mpintc C s t tt| j��S )zCurrent number of bytes)�sum�mapr- rJ )rL r r r rV � s z_FragList.sizer c C s6 x0| j D ]&}t|�}||| }}||||�< qW |S )zWrite into bytearray)rJ r- )rL Zdstbuf�posZfragZflen�startr r r �render� s z_FragList.renderc C s" t t| j� ��}| j|� |j� S )zReturn as bytes)rT rU rV r] �tobytes)rL �bufr r r r^ � s z_FragList.tobytes)N)r ) �__name__� __module__� __qualname__�__doc__rM rO rQ rW rX rV r] r^ r r r r rI � s rI c @ s8 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd S ) � _SSHFormatRSAzhFormat for RSA keys. Public: mpint e, n Private: mpint n, e, d, iqmp, p, q c C s$ t |�\}}t |�\}}||f|fS )zRSA public fields)rE )rL r) �er? r r r � get_public� s z_SSHFormatRSA.get_publicc C s0 | j |�\\}}}tj||�}|j|�}||fS )z Make RSA public key from data.)rf r �RSAPublicNumbersr# )rL �key_typer) r5 re r? �public_numbersr# r r r � load_public� s z_SSHFormatRSA.load_publicc C s� t |�\}}t |�\}}t |�\}}t |�\}}t |�\}}t |�\} }||f|kr\td��tj||�} tj|| �} tj||�} tj|| || | || �} | j|�}||fS )z Make RSA private key from data.z Corrupt data: rsa field mismatch)rE r" r Z rsa_crt_dmp1Z rsa_crt_dmq1rg ZRSAPrivateNumbers� private_key)rL r) � pubfieldsr5 r? re �d�iqmp�p�qZdmp1Zdmq1ri �private_numbersrk r r r � load_private� s z_SSHFormatRSA.load_privatec C s$ |j � }|j|j� |j|j� dS )zWrite RSA public keyN)ri rX re r? )rL r# �f_pubZpubnr r r � encode_public� s z_SSHFormatRSA.encode_publicc C sZ |j � }|j}|j|j� |j|j� |j|j� |j|j� |j|j� |j|j� dS )zWrite RSA private keyN) rq ri rX r? re rm rn ro rp )rL rk �f_privrq ri r r r �encode_private� s z _SSHFormatRSA.encode_privateN) r` ra rb rc rf rj rr rt rv r r r r rd � s rd c @ s@ e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dS )� _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|fS )zDSA public fields)rE )rL r) ro rp �g�yr r r rf s z_SSHFormatDSA.get_publicc C sL | j |�\\}}}}}tj|||�}tj||�} | j| � | j|�} | |fS )z Make DSA public key from data.)rf r �DSAParameterNumbers�DSAPublicNumbers� _validater# ) rL rh r) r5 ro rp rx ry �parameter_numbersri r# r r r rj s z_SSHFormatDSA.load_publicc C s| | j |�\\}}}}}t|�\}}||||f|kr:td��tj|||�} tj|| �} | j| � tj|| �} | j|�} | |fS )z Make DSA private key from data.z Corrupt data: dsa field mismatch) rf rE r" r rz r{ r| ZDSAPrivateNumbersrk ) rL r) rl r5 ro rp rx ry �xr} ri rq rk r r r rr ' s z_SSHFormatDSA.load_privatec C sL |j � }|j}| j|� |j|j� |j|j� |j|j� |j|j� dS )zWrite DSA public keyN)ri r} r| rX ro rp rx ry )rL r# rs ri r} r r r rt 5 s z_SSHFormatDSA.encode_publicc C s$ | j |j� |� |j|j� j� dS )zWrite DSA private keyN)rt r# rX rq r~ )rL rk ru r r r rv @ s z _SSHFormatDSA.encode_privatec C s |j }|jj� dkr td��d S )Ni z#SSH supports only 1024 bit DSA keys)r} ro rF r" )rL ri r} r r r r| E s z_SSHFormatDSA._validateN) r` ra rb rc rf rj rr rt rv r| r r r r rw s rw c @ s@ e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dS )�_SSHFormatECDSAz�Format for ECDSA keys. Public: str curve bytes point Private: str curve bytes point mpint secret c C s || _ || _d S )N)�ssh_curve_namer )rL r� r r r r rM W s z_SSHFormatECDSA.__init__c C sN t |�\}}t |�\}}|| jkr*td��tj|d�dkrBtd��||f|fS )zECDSA public fieldszCurve name mismatchr r8 zNeed uncompressed point)r@ r� r" rB rC �NotImplementedError)rL r) r �pointr r r rf [ s z_SSHFormatECDSA.get_publicc C s. | j |�\\}}}tjj| j|j� �}||fS )z Make ECDSA public key from data.)rf r �EllipticCurvePublicKeyZfrom_encoded_pointr r^ )rL rh r) r5 � curve_namer� r# r r r rj e s z_SSHFormatECDSA.load_publicc C sJ | j |�\\}}}t|�\}}||f|kr2td��tj|| j|�}||fS )z!Make ECDSA private key from data.z"Corrupt data: ecdsa field mismatch)rf rE r" r Zderive_private_keyr )rL r) rl r5 r� r� �secretrk r r r rr m s z _SSHFormatECDSA.load_privatec C s* |j tjtj�}|j| j� |j|� dS )zWrite ECDSA public keyN)� public_bytesr ZX962r ZUncompressedPointrW r� )rL r# rs r� r r r rt w s z _SSHFormatECDSA.encode_publicc C s, |j � }|j� }| j||� |j|j� dS )zWrite ECDSA private keyN)r# rq rt rX Z private_value)rL rk ru r# rq r r r rv s z _SSHFormatECDSA.encode_privateN) r` ra rb rc rM rf rj rr rt rv r r r r r K s r c @ s8 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd S ) �_SSHFormatEd25519z~Format for Ed25519 keys. Public: bytes point Private: bytes point bytes secret_and_point c C s t |�\}}|f|fS )zEd25519 public fields)r@ )rL r) r� r r r rf � s z _SSHFormatEd25519.get_publicc C s( | j |�\\}}tjj|j� �}||fS )z"Make Ed25519 public key from data.)rf r �Ed25519PublicKeyZfrom_public_bytesr^ )rL rh r) r5 r� r# r r r rj � s z _SSHFormatEd25519.load_publicc C sb | j |�\\}}t|�\}}|dd� }|dd� }||ksF|f|krNtd��tjj|�}||fS )z#Make Ed25519 private key from data.Nr z$Corrupt data: ed25519 field mismatch)rf r@ r" r �Ed25519PrivateKeyZfrom_private_bytes) rL r) rl r5 r� Zkeypairr� Zpoint2rk r r r rr � s z _SSHFormatEd25519.load_privatec C s |j tjtj�}|j|� dS )zWrite Ed25519 public keyN)r� r �Rawr rW )rL r# rs �raw_public_keyr r r rt � s z _SSHFormatEd25519.encode_publicc C sR |j � }|jtjtjt� �}|jtjtj�}t||g�}| j ||� |j |� dS )zWrite Ed25519 private keyN) r# Z private_bytesr r� r r r� r rI rt rW )rL rk ru r# Zraw_private_keyr� Z f_keypairr r r rv � s z _SSHFormatEd25519.encode_privateN) r` ra rb rc rf rj rr rt rv r r r r r� � s r� s nistp256s nistp384s nistp521c C s6 t | t�st| �j� } | tkr&t| S td| ��dS )z"Return valid format or throw errorzUnsupported key type: %rN)rR rS rT r^ � _KEY_FORMATSr )rh r r r �_lookup_kformat� s r� c C sR t jd| � t|�}|dk r(t jd|� tj| �}|s>td��|jd�}|jd�}t j t | �||� �} | j t �sztd��t | �tt �d� } t| �\}} t| �\}} t| �\}} t| �\} } | dkr�td��t| �\} } t| �\} } t| �} | j| �\} } t| � t| �\}} t| � ||fttfk�r�|j� }|tk�rHtd| ��|tk�r^td| ��t| d }t||� t|�\}}t|�\}}t|� t|||j� ||�}t |j� j |��}nd }t||� t|�\}}t|�\}}||k�r�td ��t|�\}}|| k�rtd ��| j || |�\}}t|�\}}|t dt|�� k�rNtd ��|S )z.Load private key from OpenSSH custom encoding.r) Nr2 z Not OpenSSH private key formatr zOnly one key supportedzUnsupported cipher: %rzUnsupported KDF: %r� r< z Corrupt data: broken checksumz Corrupt data: key type mismatchz Corrupt data: invalid padding) r �_check_bytesliker � _check_bytes�_PEM_RC�searchr" r\ �end�binascii� a2b_base64rT � startswith� _SK_MAGICr- r@ r; r� rf r/ �_NONEr^ r0 r �_BCRYPTr. r7 Z decryptor�updaterr �_PADDING)r) r2 r5 �mZp1Zp2r1 �kdfnameZ kdfoptions�nkeysZpubdataZ pub_key_type�kformatrl Zedata�blklenr3 Zkbufr4 �ciphZck1Zck2rh rk �commentr r r �load_ssh_private_key� sl r� c C s> |dk rt jd|� |r,t|�tkr,td��t| tj�rFt| j � �}n>t| t j �rXt }n,t| t j�rjt}nt| tj�r|t}ntd��t|�}t� }|r�t}t| d }t}t}tjd�} |j| � |j |� t d�} t ||| || �} nt }}d}d} d} tjd �} d }t� }|j|� |j | j � |� t| | g�}|j|� |j!| |� |j|� |j"t#d||j$� | � � t� }|j"t%� |j|� |j|� |j|� |j | � |j|� |j|� |j$� }|j$� }t&t'|| ��}|j(|� || }| dk �r| j)� j*|||� ||d� � t+|d|� �}t'|�|||�< |S ) z3Serialize private key with OpenSSH custom encoding.Nr2 zNPasswords longer than 72 bytes are not supported by OpenSSH private key formatzUnsupported key typer� r r< r r8 r& ),r r� r- � _MAX_PASSWORDr" rR r ZEllipticCurvePrivateKeyr$ r# r Z RSAPrivateKey�_SSH_RSAr Z DSAPrivateKey�_SSH_DSAr r� � _SSH_ED25519r� rI �_DEFAULT_CIPHERr0 r� �_DEFAULT_ROUNDS�os�urandomrW rQ r r7 r� rt rv rO r� rV r� rT rU r] Z encryptorZ update_intor, )rk r2 rh r� Z f_kdfoptionsr1 r� r� r4 r3 r5 r� r� Zcheckvalr� Z f_public_keyZ f_secretsZf_mainZslenZmlenr_ ZofsZtxtr r r �serialize_ssh_private_key st r� c C s� t |�}tjd| � tj| �}|s*td��|jd� }}|jd�}d}t|tt� d� krrd}|dtt� � }t |�}yt t j |��} W n" t t jfk r� td��Y nX t| �\}} ||kr�td��|r�t| �\} } |j|| |�\} } |�rxt| �\} } t| �\} } t| �\} } t| �\}} t| �\}} t| �\}} t| �\}} t| �\}} t| �\}} t| �\}} t| �\}} t| � | S ) z-Load public key from OpenSSH one-line format.r) zInvalid line formatr � FNTzInvalid key format)r r r� �_SSH_PUBKEY_RC�matchr" �group� _CERT_SUFFIXr- r� rT r� r� � TypeError�Errorr@ rj r> r; r/ )r) r5 r� rh Z orig_key_typeZkey_bodyZ with_certr� Zinner_key_typeZnoncer# �serialZcctypeZkey_idZ principalsZ valid_afterZ valid_beforeZ crit_options� extensionsZreservedZsig_keyZ signaturer r r �load_ssh_public_keym sH r� c C s� t | tj�rt| �}n>t | tj�r(t}n,t | tj�r:t }nt | t j �rLt }nt d��t|�}t� }|j|� |j| |� tj|j� �j� }dj|d|g�S )z&One-line public key format for OpenSSHzUnsupported key typer& � )rR r r� r$ r Z RSAPublicKeyr� r Z DSAPublicKeyr� r r� r� r" r� rI rW rt r� Z b2a_base64r^ �stripr' )r# rh r� rs Zpubr r r �serialize_ssh_public_key� s r� � )N)N)N)^Z __future__r r r r� r� �re�structrB Z cryptographyr Zcryptography.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 Zbcryptr 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� rT rU �ranger� ZAESZCTRZCBCr0 r! �Structr9 r= r$ r, r. r/ r7 r; r> r@ rE rH �objectrI rd rw r r� Z SECP256R1Z SECP384R1Z SECP521R1r� r� r� r� r� r� r r r r �<module> s� 0>>=: J O +