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편집 파일: dnssec.cpython-38.pyc
U /?�f�� � @ s< d Z ddlZddlZddlZddlZddlZddlZddlmZ ddlm Z m Z m Z m Z m Z mZmZmZ ddlZddlZddlZddlZddlZddlZddlZddlZddlZddlZddl Zddl m Z m Z m Z ddlm!Z!m"Z"m#Z#m$Z$ ddl%m&Z& ddl'm(Z( dd l)m*Z* dd l+m,Z, dd l-m.Z.m/Z/ dd l0m1Z1 dd l2m3Z3m4Z4 ddl5m6Z6 ed Z7ed Z8e ej9j:ej;j<gdf Z=e>e d�dd�Z?ee e@f e>d�dd�ZAeee>eBe@f e@d�dd�ZCee*e&f e@d�dd�ZDG d d � d �ZEG d d � d eE�ZFeFe jGe jHe jIe jJhe jGe jHe jIhe jKe jLe jMhe jKh�ZNeFeO� eO� eO� eO� �ZPeNZQdeeejRjSe>f ejTjUee e>f e ejRjS e eE eVe,d!�d"d#�ZWdfeejRjSe>f ejTjUee e>f e ejRjS e(d$�d%d&�ZXe ejRjSeejYjZej[j\f f e3e e e* d'�d(d)�Z]eej;j<eejRjSejYjZf f eejRjSejYjZf d*�d+d,�Z^e_e_e*dd-�d.d/�Z`dgeej;j<eejRjSejYjZf f e3e ejRjSeej[j\ejYjZf f e ejRjS e eB e eE dd0�d1d2�Zadheej;j<eejRjSejYjZf f eej;j<eejRjSejYjZf f e ejRjSeej[j\ejYjZf f e ejRjS e eB e eE dd3�d4d5�Zbdieej;j<eejRjSejYjZf f e8ejRjSe*e eee>e@eBf e eee>e@eBf e e@ eVe eE e ejRjS e3d6� d7d8�Zcdjeej;j<eejRjSejYjZf f e3e ejRjS e_d9�d:d;�Zde6jed<fe7ee@e>f e@e@e*d=�d>d?�Zfe6jed<fe7ee@e>f e@e@e&d=�d@dA�ZgeejRjSe>f e ee>e_f e@ee@e>f e>dB�dCdD�Zhdkeej;j<eejRjSejYjZf f e ee e>f e ejRjS ejYjZdE�dFdG�ZiejYjZejYjZdH�dIdJ�ZjdleejRjSe>f ejYjZee e>f e ejRjS ejYjZdK�dLdM�ZkejYjZejYjZdH�dNdO�Zldmej9j:ej;j<ejRjSe ee8e*f e ee8e*f e eee>e@eBf e eee>e@eBf e e@ e eE e ejRjS ddP� dQdR�Zmdnejnjoe ej9j: e e ee8e*f eVe e@ e eee>e@eBf e eee>e@eBf e e@ e e1 e e= e eE ddT� dUdV�Zpdoejnjoej9j:e e= ddW�dXdY�ZqdZd[� Zrejs�td\��r�dd]lumvZv dd^lwmxZx dd_lwmyZy dd`lwmzZz ddalwm{Z{ ddblwm|Z| ddcl}m~Z~mZ dddl�m�Z�m�Z� ebZ�eaZ�ecZ�efZ�egZ�dSZ�nerZ�erZ�erZ�erZ�erZ�d Z�e jGZGe j�Z�e jHZHe j�Z�e j�Z�e jIZIe j�Z�e j�Z�e j�Z�e jJZJe j�Z�e j�Z�e j�Z�e j�Z�e j�Z�e j�Z�e j�Z�dS )pz.Common DNSSEC-related functions and constants.� N)�datetime)�Callable�Dict�List�Optional�Set�Tuple�Union�cast)� Algorithm�DSDigest� NSEC3Hash)�AlgorithmKeyMismatch�DeniedByPolicy�UnsupportedAlgorithm�ValidationFailure)�CDNSKEY)�CDS)�DNSKEY)�DS)�NSEC�Bitmap)� NSEC3PARAM)�RRSIG�sigtime_to_posixtime)�Flag)�GenericPublicKeyzrsa.RSAPublicKeyzec.EllipticCurvePublicKeyzed25519.Ed25519PublicKeyzed448.Ed448PublicKey)�GenericPrivateKeyzrsa.RSAPrivateKeyzec.EllipticCurvePrivateKeyzed25519.Ed25519PrivateKeyzed448.Ed448PrivateKey)�text�returnc C s t �| �S )z�Convert text into a DNSSEC algorithm value. *text*, a ``str``, the text to convert to into an algorithm value. Returns an ``int``. )r � from_text)r � r! �8/opt/hc_python/lib/python3.8/site-packages/dns/dnssec.py�algorithm_from_textL s r# )�valuer c C s t �| �S )z�Convert a DNSSEC algorithm value to text *value*, a ``dns.dnssec.Algorithm``. Returns a ``str``, the name of a DNSSEC algorithm. )r Zto_text�r$ r! r! r" �algorithm_to_textW s r& c C sT t | t�rt| �� �S t | t�r(t| �S t | t�r:t| �S t | t�rH| S td��dS )z%Convert various format to a timestampzUnsupported timestamp typeN)� isinstancer �int� timestamp�strr �float� TypeErrorr% r! r! r" � to_timestampb s r- ��keyr c C s� | � � }| jtjkr(|d d> |d S d}tt|�d �D ](}||d| d> |d| d 7 }q<t|�d dkr�||t|�d d> 7 }||d? d@ 7 }|d@ S d S ) z�Return the key id (a 16-bit number) for the specified key. *key*, a ``dns.rdtypes.ANY.DNSKEY.DNSKEY`` Returns an ``int`` between 0 and 65535 ���� ���r � � � i�� N)�to_wire� algorithmr �RSAMD5�range�len)r/ �rdata�total�ir! r! r" �key_idp s &r> c @ sT e Zd Zdd� Zeed�dd�Zeed�dd�Zeed�dd �Z eed�d d �Z d S ) �Policyc C s d S �Nr! )�selfr! r! r" �__init__� s zPolicy.__init__)�_r c C s dS �NFr! �rA rC r! r! r" � ok_to_sign� s zPolicy.ok_to_signc C s dS rD r! rE r! r! r" �ok_to_validate� s zPolicy.ok_to_validatec C s dS rD r! rE r! r! r" �ok_to_create_ds� s zPolicy.ok_to_create_dsc C s dS rD r! rE r! r! r" �ok_to_validate_ds� s zPolicy.ok_to_validate_dsN) �__name__� __module__� __qualname__rB r �boolrF rG r rH rI r! r! r! r" r? � s r? c s\ e Zd Z� fdd�Zeed�dd�Zeed�dd�Zeed�d d �Z eed�d d �Z � Z S ) � SimpleDenyc s& t � �� || _|| _|| _|| _d S r@ )�superrB � _deny_sign�_deny_validate�_deny_create_ds�_deny_validate_ds)rA Z deny_signZ deny_validateZdeny_create_dsZdeny_validate_ds�� __class__r! r" rB � s zSimpleDeny.__init__r. c C s |j | jkS r@ )r7 rP �rA r/ r! r! r" rF � s zSimpleDeny.ok_to_signc C s |j | jkS r@ )r7 rQ rV r! r! r" rG � s zSimpleDeny.ok_to_validate)r7 r c C s || j kS r@ )rR �rA r7 r! r! r" rH � s zSimpleDeny.ok_to_create_dsc C s || j kS r@ )rS rW r! r! r" rI � s z SimpleDeny.ok_to_validate_ds) rJ rK rL rB r rM rF rG r rH rI � __classcell__r! r! rT r" rN � s rN F)�namer/ r7 �origin�policy� validatingr c C s\ |dkr t }zt|t�r$t|�� }W n tk rF td| ��Y nX |rT|j}n|j}||�sft �t|t t f�s|t d��|tj kr�t�� }n4|tjkr�t�� }n |tjkr�t�� }n td| ��t| t�r�tj�| |�} | �� �� }|dk s�t�|�|� |�|j|d�� |�� } t � dt |�|j |�| } tj �!tj"j#tj$j%| dt&| ��} t't%| �S )a� Create a DS record for a DNSSEC key. *name*, a ``dns.name.Name`` or ``str``, the owner name of the DS record. *key*, a ``dns.rdtypes.ANY.DNSKEY.DNSKEY`` or ``dns.rdtypes.ANY.DNSKEY.CDNSKEY``, the key the DS is about. *algorithm*, a ``str`` or ``int`` specifying the hash algorithm. The currently supported hashes are "SHA1", "SHA256", and "SHA384". Case does not matter for these strings. *origin*, a ``dns.name.Name`` or ``None``. If *key* is a relative name, then it will be made absolute using the specified origin. *policy*, a ``dns.dnssec.Policy`` or ``None``. If ``None``, the default policy, ``dns.dnssec.default_policy`` is used; this policy defaults to that of RFC 8624. *validating*, a ``bool``. If ``True``, then policy is checked in validating mode, i.e. "Is it ok to validate using this digest algorithm?". Otherwise the policy is checked in creating mode, i.e. "Is it ok to create a DS with this digest algorithm?". Raises ``UnsupportedAlgorithm`` if the algorithm is unknown. Raises ``DeniedByPolicy`` if the algorithm is denied by policy. Returns a ``dns.rdtypes.ANY.DS.DS`` N�unsupported algorithm "%s"zkey is not a DNSKEY/CDNSKEY�rZ z!HBBr )(�default_policyr' r* r �upper� Exceptionr rI rH r r r � ValueError�SHA1�hashlib�sha1�SHA256�sha256�SHA384�sha384�dnsrY r � canonicalizer6 �AssertionError�update�digest�struct�packr> r7 r; Z from_wire� rdataclass�IN� rdatatyper r: r ) rY r/ r7 rZ r[ r\ �checkZdshashZwirern Zdsrdata�dsr! r! r" �make_ds� sJ % �rv )rY r/ r7 rZ r c C s0 t | |||�}t|jtjj|j|j|j|jd�S )a� Create a CDS record for a DNSSEC key. *name*, a ``dns.name.Name`` or ``str``, the owner name of the DS record. *key*, a ``dns.rdtypes.ANY.DNSKEY.DNSKEY`` or ``dns.rdtypes.ANY.DNSKEY.CDNSKEY``, the key the DS is about. *algorithm*, a ``str`` or ``int`` specifying the hash algorithm. The currently supported hashes are "SHA1", "SHA256", and "SHA384". Case does not matter for these strings. *origin*, a ``dns.name.Name`` or ``None``. If *key* is a relative name, then it will be made absolute using the specified origin. Raises ``UnsupportedAlgorithm`` if the algorithm is unknown. Returns a ``dns.rdtypes.ANY.DS.CDS`` ��rdclass�rdtype�key_tagr7 � digest_typern ) rv r rx rj rs rz r7 r{ rn )rY r/ r7 rZ ru r! r! r" �make_cds s �r| )�keys�rrsigr c sR | � � j�}t|tjj�r0|�tjjtj j �}n|}|d kr@d S � fdd�|D �S )Nc sL g | ]D}|j � j krt|�� jkr|jtj@ tjkr|jd krtt|��qS )� ) r7 r> rz �flagsr �ZONE�protocolr r )�.0�rd�r~ r! r" � <listcomp>2 s �z(_find_candidate_keys.<locals>.<listcomp>) �get�signerr' rj �node�NodeZ get_rdatasetrq rr rs r )r} r~ r$ �rdatasetr! r� r" �_find_candidate_keys( s �r� )�rrsetr c C s( t | t�r| d | d fS | j| fS d S )Nr r4 )r' �tuplerY )r� r! r! r" �_get_rrname_rdataset< s r� )�sig�datar/ r c C sF t |�j}z|�|�}W n tk r4 td��Y nX |�| |� d S )Nzinvalid public key)� get_algorithm_cls_from_dnskey� public_clsZ from_dnskeyrb r �verify)r� r� r/ r� � public_keyr! r! r" �_validate_signatureE s r� )r� r~ r} rZ �nowr[ r c C s� |dkr t }t||�}|dkr&td��|dkr6t�� }|j|k rHtd��|j|krZtd��t| ||�}|D ]D}|�|�szqjzt|j ||� W dS t tfk r� Y qjY qjX qjtd��dS )a� Validate an RRset against a single signature rdata, throwing an exception if validation is not successful. *rrset*, the RRset to validate. This can be a ``dns.rrset.RRset`` or a (``dns.name.Name``, ``dns.rdataset.Rdataset``) tuple. *rrsig*, a ``dns.rdata.Rdata``, the signature to validate. *keys*, the key dictionary, used to find the DNSKEY associated with a given name. The dictionary is keyed by a ``dns.name.Name``, and has ``dns.node.Node`` or ``dns.rdataset.Rdataset`` values. *origin*, a ``dns.name.Name`` or ``None``, the origin to use for relative names. *now*, a ``float`` or ``None``, the time, in seconds since the epoch, to use as the current time when validating. If ``None``, the actual current time is used. *policy*, a ``dns.dnssec.Policy`` or ``None``. If ``None``, the default policy, ``dns.dnssec.default_policy`` is used; this policy defaults to that of RFC 8624. Raises ``ValidationFailure`` if the signature is expired, not yet valid, the public key is invalid, the algorithm is unknown, the verification fails, etc. Raises ``UnsupportedAlgorithm`` if the algorithm is recognized by dnspython but not implemented. Nz unknown keyZexpiredz not yet validzverify failure) r_ r� r �time� expiration� inception�_make_rrsig_signature_datarG r� � signature�InvalidSignature) r� r~ r} rZ r� r[ Zcandidate_keysr� Z candidate_keyr! r! r" �_validate_rrsigN s* ( r� )r� �rrsigsetr} rZ r� r[ r c C s� |dkr t }t|t�r(tj�|tjj�}t| t�r<| d }n| j}t|t�r^|d }|d }n |j}|}|�|�}|�|�}||kr�t d��|D ]J} t| t �s�t d��zt | | ||||� W dS t t fk r� Y q�X q�t d��dS )a� Validate an RRset against a signature RRset, throwing an exception if none of the signatures validate. *rrset*, the RRset to validate. This can be a ``dns.rrset.RRset`` or a (``dns.name.Name``, ``dns.rdataset.Rdataset``) tuple. *rrsigset*, the signature RRset. This can be a ``dns.rrset.RRset`` or a (``dns.name.Name``, ``dns.rdataset.Rdataset``) tuple. *keys*, the key dictionary, used to find the DNSKEY associated with a given name. The dictionary is keyed by a ``dns.name.Name``, and has ``dns.node.Node`` or ``dns.rdataset.Rdataset`` values. *origin*, a ``dns.name.Name``, the origin to use for relative names; defaults to None. *now*, an ``int`` or ``None``, the time, in seconds since the epoch, to use as the current time when validating. If ``None``, the actual current time is used. *policy*, a ``dns.dnssec.Policy`` or ``None``. If ``None``, the default policy, ``dns.dnssec.default_policy`` is used; this policy defaults to that of RFC 8624. Raises ``ValidationFailure`` if the signature is expired, not yet valid, the public key is invalid, the algorithm is unknown, the verification fails, etc. Nr r4 zowner names do not matchzexpected an RRSIGzno RRSIGs validated) r_ r' r* rj rY r �rootr� Zchoose_relativityr r r� r ) r� r� r} rZ r� r[ �rrnameZ rrsignameZ rrsigrdatasetr~ r! r! r" � _validate� s2 ' r� ) r� � private_keyr� �dnskeyr� r� �lifetimer� r[ rZ r c C sz |dkr t }|�|�st�t| t�rL| d j} | d j} | d } | d j} n| j} | j} | j} | j} |dk rvt |�}n t t � � �}|dk r�t |�}n|dk r�|| }nt d��| dk r�| � | �} t| �d }| �� r�|d8 }t| tjj| |j|| ||t|�|dd� }tj�| || �}t|t��r&|}n6zt|�}||d�}W n tk �rZ td��Y nX |�||�}t t|j |d ��S ) a Sign RRset using private key. *rrset*, the RRset to validate. This can be a ``dns.rrset.RRset`` or a (``dns.name.Name``, ``dns.rdataset.Rdataset``) tuple. *private_key*, the private key to use for signing, a ``cryptography.hazmat.primitives.asymmetric`` private key class applicable for DNSSEC. *signer*, a ``dns.name.Name``, the Signer's name. *dnskey*, a ``DNSKEY`` matching ``private_key``. *inception*, a ``datetime``, ``str``, ``int``, ``float`` or ``None``, the signature inception time. If ``None``, the current time is used. If a ``str``, the format is "YYYYMMDDHHMMSS" or alternatively the number of seconds since the UNIX epoch in text form; this is the same the RRSIG rdata's text form. Values of type `int` or `float` are interpreted as seconds since the UNIX epoch. *expiration*, a ``datetime``, ``str``, ``int``, ``float`` or ``None``, the signature expiration time. If ``None``, the expiration time will be the inception time plus the value of the *lifetime* parameter. See the description of *inception* above for how the various parameter types are interpreted. *lifetime*, an ``int`` or ``None``, the signature lifetime in seconds. This parameter is only meaningful if *expiration* is ``None``. *verify*, a ``bool``. If set to ``True``, the signer will verify signatures after they are created; the default is ``False``. *policy*, a ``dns.dnssec.Policy`` or ``None``. If ``None``, the default policy, ``dns.dnssec.default_policy`` is used; this policy defaults to that of RFC 8624. *origin*, a ``dns.name.Name`` or ``None``. If ``None``, the default, then all names in the rrset (including its owner name) must be absolute; otherwise the specified origin will be used to make names absolute when signing. Raises ``DeniedByPolicy`` if the signature is denied by policy. Nr4 r z(expiration or lifetime must be specified� ) rx ry Z type_coveredr7 �labels� original_ttlr� r� rz r� r� �r/ zUnsupported key algorithm)r� ) r_ rF r r' r� rx ry �ttlrY r- r( r� rb � derelativizer: �is_wildr rj rs r7 r> �dnssecr� r r� r r, �signr �replace)r� r� r� r� r� r� r� r� r[ rZ rx ry r� r� Zrrsig_inceptionZrrsig_expirationr� Zrrsig_templater� Z signing_keyZ private_clsr� r! r! r" �_sign� sb 5 � r� )r� r~ rZ r c s� t � t�r tj�� tjj�� |j}|�� sD� dkr:td��|� � �}t | �\}}d}||j |d�dd� 7 }||j� |�7 }|�� s�� dkr�td��|� � �}t |�}|�� r�|j|d kr�td��|d |jk r�td ��n2|j|d k �r|�|jd �d }tj�d |�}|� � } t�d |j|j|j�} � fd d �|D �} t| �D ]6} || 7 }|| 7 }t�dt | ��} || 7 }|| 7 }�qF|S )a� Create signature rdata. *rrset*, the RRset to sign/validate. This can be a ``dns.rrset.RRset`` or a (``dns.name.Name``, ``dns.rdataset.Rdataset``) tuple. *rrsig*, a ``dns.rdata.Rdata``, the signature to validate, or the signature template used when signing. *origin*, a ``dns.name.Name`` or ``None``, the origin to use for relative names. Raises ``UnsupportedAlgorithm`` if the algorithm is recognized by dnspython but not implemented. Nz,relative RR name without an origin specifiedr� r^ � r3 z&wild owner name has wrong label lengthr4 z#owner name longer than RRSIG labels�*z!HHIc s g | ]}|� � ��qS r! )� to_digestable)r� r; r^ r! r" r� � s z._make_rrsig_signature_data.<locals>.<listcomp>z!H)r' r* rj rY r r� r� � is_absoluter r� r� r6 r� r: r� r� �splitro rp ry rx r� �sorted)r� r~ rZ r� r� r� r� Zname_len�suffixZ rrnamebufZrrfixedZrdatasr; Zrrlenr! r^ r" r� U sB r� r )r� r7 r� r� r c C sD t �|�}t| t�r"| j||d�S t|�j}|| d�j||d�S dS )a� Convert a public key to DNSKEY Rdata *public_key*, a ``PublicKey`` (``GenericPublicKey`` or ``cryptography.hazmat.primitives.asymmetric``) to convert. *algorithm*, a ``str`` or ``int`` specifying the DNSKEY algorithm. *flags*: DNSKEY flags field as an integer. *protocol*: DNSKEY protocol field as an integer. Raises ``ValueError`` if the specified key algorithm parameters are not unsupported, ``TypeError`` if the key type is unsupported, `UnsupportedAlgorithm` if the algorithm is unknown and `AlgorithmKeyMismatch` if the algorithm does not match the key type. Return DNSKEY ``Rdata``. )r� r� r� N)r �maker' r Z to_dnskey�get_algorithm_clsr� )r� r7 r� r� r� r! r! r" � _make_dnskey� s r� c C s0 t | |||�}t|jtjj|j|j|j|jd�S )a� Convert a public key to CDNSKEY Rdata *public_key*, the public key to convert, a ``cryptography.hazmat.primitives.asymmetric`` public key class applicable for DNSSEC. *algorithm*, a ``str`` or ``int`` specifying the DNSKEY algorithm. *flags*: DNSKEY flags field as an integer. *protocol*: DNSKEY protocol field as an integer. Raises ``ValueError`` if the specified key algorithm parameters are not unsupported, ``TypeError`` if the key type is unsupported, `UnsupportedAlgorithm` if the algorithm is unknown and `AlgorithmKeyMismatch` if the algorithm does not match the key type. Return CDNSKEY ``Rdata``. �rx ry r� r� r7 r/ ) r� r rx rj rs r� r� r7 r/ )r� r7 r� r� r� r! r! r" � _make_cdnskey� s �r� )�domain�salt� iterationsr7 r c C s t �dd�}zt|t �r$t|�� }W n tk rB td��Y nX |tjkrVtd��|dkrdd}n4t|t �r�t|�d dkr�t � |�}q�td��n|}t| t j j �s�t j �| �} | �� �� }|dk s�t�t�|| ��� }t|�D ]}t�|| ��� }q�t�|��d �} | �|�} | S ) a� Calculate the NSEC3 hash, according to https://tools.ietf.org/html/rfc5155#section-5 *domain*, a ``dns.name.Name`` or ``str``, the name to hash. *salt*, a ``str``, ``bytes``, or ``None``, the hash salt. If a string, it is decoded as a hex string. *iterations*, an ``int``, the number of iterations. *algorithm*, a ``str`` or ``int``, the hash algorithm. The only defined algorithm is SHA1. Returns a ``str``, the encoded NSEC3 hash. Z ABCDEFGHIJKLMNOPQRSTUVWXYZ234567Z 0123456789ABCDEFGHIJKLMNOPQRSTUVz-Wrong hash algorithm (only SHA1 is supported)Nr� r3 r zInvalid salt lengthzutf-8)r* � maketransr' r r` ra rb rc r: �bytes�fromhexrj rY �Namer rk r6 rl rd re rn r9 �base64� b32encode�decode� translate) r� r� r� r7 Zb32_conversionZ salt_encodedZdomain_encodedrn rC �outputr! r! r" � nsec3_hash� s8 � r� )r� � algorithmsrZ r c C s t | �\}}|jtjjtjjtjjfkr0td��t� }|D ]J}zt |t �rVt |� � }W n t k rx td| ��Y nX |�|� q:|jtjjkr�g }t|�D ]}|j|kr�|�|� q�t|�dkr�td��tj�|j|�S g }|D ]}|�t||||�� q�tj�|j|�S )a Create a DS record from DNSKEY/CDNSKEY/CDS. *rrset*, the RRset to create DS Rdataset for. This can be a ``dns.rrset.RRset`` or a (``dns.name.Name``, ``dns.rdataset.Rdataset``) tuple. *algorithms*, a set of ``str`` or ``int`` specifying the hash algorithms. The currently supported hashes are "SHA1", "SHA256", and "SHA384". Case does not matter for these strings. If the RRset is a CDS, only digest algorithms matching algorithms are accepted. *origin*, a ``dns.name.Name`` or ``None``. If `key` is a relative name, then it will be made absolute using the specified origin. Raises ``UnsupportedAlgorithm`` if any of the algorithms are unknown and ``ValueError`` if the given RRset is not usable. Returns a ``dns.rdataset.Rdataset`` z rrset not a DNSKEY/CDNSKEY/CDSr] r z no acceptable CDS rdata found)r� ry rj rs r r r rb �setr' r* r r` ra r �add�cds_rdataset_to_ds_rdatasetr{ �appendr: r� �from_rdata_listr� �extend� dnskey_rdataset_to_cds_rdataset) r� r� rZ r� r� Z _algorithmsr7 �resr; r! r! r" �make_ds_rdataset s6 � r� )r� r c C s\ | j tjjkrtd��g }| D ],}|�t|jtjj|j|j |j |j d�� q tj � | j|�S )z�Create a CDS record from DS. *rdataset*, a ``dns.rdataset.Rdataset``, to create DS Rdataset for. Raises ``ValueError`` if the rdataset is not CDS. Returns a ``dns.rdataset.Rdataset`` zrdataset not a CDSrw )ry rj rs r rb r� rx r rz r7 r{ rn r� r� r� �r� r� r; r! r! r" r� U s �� r� )rY r� r7 rZ r c C sP |j tjjtjjfkr td��g }|D ]}|�t| |||�� q&tj� |j |�S )a� Create a CDS record from DNSKEY/CDNSKEY. *name*, a ``dns.name.Name`` or ``str``, the owner name of the CDS record. *rdataset*, a ``dns.rdataset.Rdataset``, to create DS Rdataset for. *algorithm*, a ``str`` or ``int`` specifying the hash algorithm. The currently supported hashes are "SHA1", "SHA256", and "SHA384". Case does not matter for these strings. *origin*, a ``dns.name.Name`` or ``None``. If `key` is a relative name, then it will be made absolute using the specified origin. Raises ``UnsupportedAlgorithm`` if the algorithm is unknown or ``ValueError`` if the rdataset is not DNSKEY/CDNSKEY. Returns a ``dns.rdataset.Rdataset`` z rdataset not a DNSKEY/CDNSKEY) ry rj rs r r rb r� r| r� r� r� )rY r� r7 rZ r� r; r! r! r" r� r s r� c C sZ | j tjjkrtd��g }| D ]*}|�t| j| j |j|j |j |j d�� q tj � | j|�S )z�Create a CDNSKEY record from DNSKEY. *rdataset*, a ``dns.rdataset.Rdataset``, to create CDNSKEY Rdataset for. Returns a ``dns.rdataset.Rdataset`` zrdataset not a DNSKEYr� )ry rj rs r rb r� r rx r� r� r7 r/ r� r� r� r� r! r! r" �#dnskey_rdataset_to_cdnskey_rdataset� s �� r� ) �txnr� r� �ksks�zsksr� r� r� r[ rZ r c C sr |j ttjjjtjjjtjjjg�kr,|} n|} | D ]8\} } tjj || | |||||| d� } | � |j |j | � q4dS )zDefault RRset signer) r� r� r� r� r� r� r� r[ rZ N) ry r� rj rs � RdataTyper r r r� r� r� rY r� )r� r� r� r� r� r� r� r� r[ rZ r} r� r� r~ r! r! r" �default_rrset_signer� s* �� � r� T) �zoner� r} � add_dnskey� dnskey_ttlr� r� r� �nsec3� rrset_signerr[ r c C s* g } g } |rN|D ]*} | d j tj@ r0| �| � q| �| � q| sD|} | sR|} ng }|rbt�|�}n| �� }|��}|r�|dkr�|�| jt j j �}|r�|j }n|�| jt j j �}|j }|D ]\}}|�| j||� q�|r�td��n>| �ptjt| j| | |||| | jd� }t| ||�W 5 Q R � S W 5 Q R X dS )a? Sign zone. *zone*, a ``dns.zone.Zone``, the zone to sign. *txn*, a ``dns.transaction.Transaction``, an optional transaction to use for signing. *keys*, a list of (``PrivateKey``, ``DNSKEY``) tuples, to use for signing. KSK/ZSK roles are assigned automatically if the SEP flag is used, otherwise all RRsets are signed by all keys. *add_dnskey*, a ``bool``. If ``True``, the default, all specified DNSKEYs are automatically added to the zone on signing. *dnskey_ttl*, a``int``, specifies the TTL for DNSKEY RRs. If not specified the TTL of the existing DNSKEY RRset used or the TTL of the SOA RRset. *inception*, a ``datetime``, ``str``, ``int``, ``float`` or ``None``, the signature inception time. If ``None``, the current time is used. If a ``str``, the format is "YYYYMMDDHHMMSS" or alternatively the number of seconds since the UNIX epoch in text form; this is the same the RRSIG rdata's text form. Values of type `int` or `float` are interpreted as seconds since the UNIX epoch. *expiration*, a ``datetime``, ``str``, ``int``, ``float`` or ``None``, the signature expiration time. If ``None``, the expiration time will be the inception time plus the value of the *lifetime* parameter. See the description of *inception* above for how the various parameter types are interpreted. *lifetime*, an ``int`` or ``None``, the signature lifetime in seconds. This parameter is only meaningful if *expiration* is ``None``. *nsec3*, a ``NSEC3PARAM`` Rdata, configures signing using NSEC3. Not yet implemented. *rrset_signer*, a ``Callable``, an optional function for signing RRsets. The function requires two arguments: transaction and RRset. If the not specified, ``dns.dnssec.default_rrset_signer`` will be used. 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