hAdZddlZddlZddlZddlZddlZddlZddlZddl Zddl Zddl Zddl Zddl mZmZmZddl mZdZdZdZdZd Zd Zej2j4j7d d d dddZej2j4j9dZej2j4j7ddZGddeZGdde Z!Gdde!Z"y)ag Parsing for `Tor Ed25519 certificates `_, which are used to for a variety of purposes... * validating the key used to sign server descriptors * validating the key used to sign hidden service v3 descriptors * signing and encrypting hidden service v3 indroductory points .. versionadded:: 1.6.0 **Module Overview:** :: Ed25519Certificate - Ed25519 signing key certificate | +- Ed25519CertificateV1 - version 1 Ed25519 certificate | |- is_expired - checks if certificate is presently expired | |- signing_key - certificate signing key | +- validate - validates a descriptor's signature | |- from_base64 - decodes a base64 encoded certificate |- to_base64 - base64 encoding of this certificate | |- unpack - decodes a byte encoded certificate +- pack - byte encoding of this certificate Ed25519Extension - extension included within an Ed25519Certificate .. data:: CertType (enum) Purpose of Ed25519 certificate. For more information see... * `cert-spec.txt `_ section A.1 * `rend-spec-v3.txt `_ appendix E .. deprecated:: 1.8.0 Replaced with :data:`stem.client.datatype.CertType` ======================== =========== CertType Description ======================== =========== **SIGNING** signing key with an identity key **LINK_CERT** TLS link certificate signed with ed25519 signing key **AUTH** authentication key signed with ed25519 signing key **HS_V3_DESC_SIGNING** hidden service v3 short-term descriptor signing key **HS_V3_INTRO_AUTH** hidden service v3 introductory point authentication key **HS_V3_INTRO_ENCRYPT** hidden service v3 introductory point encryption key ======================== =========== .. data:: ExtensionType (enum) Recognized exception types. ==================== =========== ExtensionType Description ==================== =========== **HAS_SIGNING_KEY** includes key used to sign the certificate ==================== =========== .. data:: ExtensionFlag (enum) Flags that can be assigned to Ed25519 certificate extensions. ====================== =========== ExtensionFlag Description ====================== =========== **AFFECTS_VALIDATION** extension affects whether the certificate is valid **UNKNOWN** extension includes flags not yet recognized by stem ====================== =========== N)FieldSizesplit)CertType (@s"Tor router descriptor signature v1s#Tor onion service descriptor sig v36SIGNING LINK_CERTAUTHHS_V3_DESC_SIGNINGHS_V3_INTRO_AUTHHS_V3_INTRO_ENCRYPT)HAS_SIGNING_KEYAFFECTS_VALIDATIONUNKNOWNc2eZdZdZdZdZedZdZy)Ed25519Extensiona Extension within an Ed25519 certificate. :var stem.descriptor.certificate.ExtensionType type: extension type :var list flags: extension attribute flags :var int flag_int: integer encoding of the extension attribute flags :var bytes data: data the extension concerns c|||_g|_|r|nd|_||_|r6|dzdk(r.|jj t j |dz}|r)|jj t j|tjk(r&t|dk7rtdt|zyy)Nrrz?Ed25519 HAS_SIGNING_KEY extension must be 32 bytes, but was %i.) typeflagsflag_intdataappend ExtensionFlagrr ExtensionTyperlen ValueError)selfext_typeflag_valrs e/var/www/betterdocs.net/sherlock_api/venv/lib/python3.12/site-packages/stem/descriptor/certificate.py__init__zEd25519Extension.__init__sDIDJ (HaDMDIHqLA% jj 889!mh jj --.=000SY"_ X[^_c[dd ee6E0cdt}|tjjt |j z }|tj j|jz }|tj j|jz }||j z }t|SN) bytearrayrSHORTpackr!rCHARrrbytes)r#encodeds r&r-zEd25519Extension.packsvkG tzzs499~..G tyy~~dii((G tyy~~dmm,,G tyyG >r(ct|dkr tdtjj |\}}tj j |\}}tj j |\}}t ||\}}t||k7rtd|t|fzt||||fS)Nrz*Ed25519 extension is missing header fieldszTEd25519 extension is truncated. It should have %i bytes of data but there's only %i.)r!r"rr,popr.rr)content data_sizer$rrs r&r2zEd25519Extension.pops 7|a C DD0Iw g.HgYY]]7+NE7'9-MD' 4yI mqz|AE}FqGG HH HeT 2G ;;r(cJtjj|ddddS)NrrrT)cache)stemutil _hash_attrr#s r&__hash__zEd25519Extension.__hash__s" 99  fj&$  OOr(N) __name__ __module__ __qualname____doc__r'r- staticmethodr2r;r(r&rrvs,f  < <Pr(rcjeZdZdZdZedZedZdZd dZ edZ dZ ed Z y ) Ed25519Certificatez Base class for an Ed25519 certificate. :var int version: certificate format version :var unicode encoded: base64 encoded ed25519 certificate c ||_d|_yr*)versionr0)r#rEs r&r'zEd25519Certificate.__init__sDLDLr(ctjj|d}|dk(rtj |St d|z)a  Parses a byte encoded ED25519 certificate. :param bytes content: encoded certificate :returns: :class:`~stem.descriptor.certificate.Ed25519Certificate` subclsss for the given certificate :raises: **ValueError** if certificate is malformed rrzLEd25519 certificate is version %i. Parser presently only supports version 1.)rr.r2Ed25519CertificateV1unpackr")r3rEs r&rHzEd25519Certificate.unpacksEiimmG$Q'G!| ! ( ( 11 ehoo ppr(ctjjj|}|j dr|j dr|dd} t j|}|s tdtj|}||_ |S#ttjf$r}td|d|d}~wwxYw) a Parses a base64 encoded ED25519 certificate. :param str content: base64 encoded certificate :returns: :class:`~stem.descriptor.certificate.Ed25519Certificate` subclsss for the given certificate :raises: **ValueError** if content is malformed z-----BEGIN ED25519 CERT----- z -----END ED25519 CERT-----iemptyz5Ed25519 certificate wasn't propoerly base64 encoded (z): N)r7r8 str_tools _to_unicode startswithendswithbase64 b64decode TypeErrorrCrHr0binasciiErrorr")r3decodedinstanceexcs r& from_base64zEd25519Certificate.from_base64sii!!--g6G:;@P@PQo@p3g i  )g   #**73h h o x~~ &i Z]_fg hhis?BC+B<<CcDtdt|jz)z} Encoded byte representation of our certificate. :returns: **bytes** for our encoded certificate representation z4Certificate encoding has not been implemented for %s)NotImplementedErrorrr<r:s r&r-zEd25519Certificate.packs" TW[\`WaWjWjj kkr(cdjtjjj t j |jd}|rd|z}tjjj|S)a1 Base64 encoded certificate data. :param bool pem: include `PEM header/footer `_, for more information see `RFC 7468 `_ :returns: **unicode** for our encoded certificate representation  r s:-----BEGIN ED25519 CERT----- %s -----END ED25519 CERT-----) joinr7r8rL_split_by_lengthrP b64encoder-rM)r#pemr0s r& to_base64zEd25519Certificate.to_base64sdjj,,==f>N>Ntyy{>[]_`aG ORYYg 99   * *7 33r(cfd}|S)Nc|d\}}}|r|dk7rtdd|t|tj|y)Nrz ED25519 CERT'z8' should be followed by a ED25519 CERT block, but was a )r"setattrrCrX) descriptorentriesvalue block_typeblock_contents attributekeywords r&_parsez3Ed25519Certificate._from_descriptor.._parsesM*1'*:1*='eZ z^;\ceopqq j)%7%C%CN%STr(rA)rlrkrms`` r&_from_descriptorz#Ed25519Certificate._from_descriptorsU Mr(c&|jdS)NT)r`)rar:s r&__str__zEd25519Certificate.__str__s >>> %%r(c,tj|Sr*)rCrX)r3s r&parsezEd25519Certificate.parses  ) )' 22r(N)F) r<r=r>r?r'r@rHrXr-rarnrprrrAr(r&rCrCspqq&ii:l4$  &33r(rCcbeZdZdZd fd ZdZedZdZdZ dZ edZ d Z xZ S) rGa Version 1 Ed25519 certificate, which are used for signing tor server descriptors. :var stem.client.datatype.CertType type: certificate purpose :var int type_int: integer value of the certificate purpose :var datetime expiration: expiration of the certificate :var int key_type: format of the key :var bytes key: key content :var list extensions: :class:`~stem.descriptor.certificate.Ed25519Extension` in this certificate :var bytes signature: certificate signature :param bytes signature: pre-calculated certificate signature :param cryptography.hazmat.primitives.asymmetric.ed25519.Ed25519PrivateKey signing_key: certificate signing key ctt| d| td| tdt j |\|_|_|r|n8tjjtjtz|_ |r|nd|_ tjj!||_|r|ng|_||_|r]|j)|j+}|j&r+|j&|k7rtd|d|j&d||_|j tj,tj.tj0fvrtd|jz|j tj2k(r td |j tj4k(rtd |jzy) NrzCertificate type is requiredzCertificate key is required)hoursz#Signature calculated from its key (z) mismatches 'rdzOEd25519 certificate cannot have a type of %i. This is reserved for CERTS cells.zcEd25519 certificate cannot have a type of 7. This is reserved for RSA identity cross-certification.z+Ed25519 certificate type %i is unrecognized)superrGr'r"ClientCertTypegetrtype_intdatetimeutcnow timedeltaDEFAULT_EXPIRATION_HOURS expirationkey_typer7r8 _pubkey_byteskey extensions signaturesignr-LINKIDENTITY AUTHENTICATEED25519_IDENTITYr) r# cert_typer~rrrr signing_keycalculated_sig __class__s r&r'zEd25519CertificateV1.__init__)s .q1 5 66  4 55-11)<DIt}$.jH4E4E4L4L4NQYQcQcmERF5FDO (HaDMyy&&s+DH$.jBDODN"'' 4n DNNn<Uceiesestuu%dn yy^((.*A*A>C^C^__ hkokxkxx yy n55 5 | }} n,, , Dt}}T UU -r(ct}|tjj|jz }|tjj|j z }|tj jttjj|jdz z }|tjj|jz }||jz }|tjjt|jz }|jD]}||jz }|j r||j z }t#|S)N)r+rr.r-rEryLONGintr7r8datetime_to_unixr~rrr!rrr/)r#r0 extensions r&r-zEd25519CertificateV1.packIskG tyy~~dll++G tyy~~dmm,,G tyy~~c$))"<"r(cbt|ttzkr$tdt|ttzfzt |t|tz \}}t j j|\}}t j j|\}}t jj|\}}t j j|\}}t |t\}}t j j|\}} |dk7rtd|zg} t|D]+} tj| \} } | j| -| rtdt| zt|tjj|dz||| |S)Nz;Ed25519 certificate was %i bytes, but should be at least %irz5Ed25519 v1 parser cannot read version %i certificatesz9Ed25519 certificate had %i bytes of unused extension datar)r!ED25519_HEADER_LENGTHED25519_SIGNATURE_LENGTHr"rrr.r2rED25519_KEY_LENGTHrangerrrGrzutcfromtimestamp) r3headerrrErexpiration_hoursrrextension_countextension_datarirs r&rHzEd25519CertificateV1.unpackZs 7|+.FFF TX[\cXdf{WgWXXX YYgs7|6N'NOFIiimmF+OGV f-Iv#yy}}V4fyy}}V,Hf 23KC&*iimmF&;#O^!| NQXX YYJ ? ##"2"6"6~"Fi "# RUXYgUhh ii  8+<+<+M+MN^aeNe+fhpruxBDM NNr(cXtjj|jkDS)z Checks if this certificate is presently expired or not. :returns: **True** if the certificate has expired, **False** otherwise )rznowr~r:s r& is_expiredzEd25519CertificateV1.is_expiredvs"    "T__ 44r(c||jD]-}|jtjk(s!|jcSy)z Provides this certificate's signing key. .. versionadded:: 1.8.0 :returns: **bytes** with the first signing key on the certificate, None if not present N)rrr rr)r#rs r&rz Ed25519CertificateV1.signing_keys8__ =88 8~~ r(cxtjjds tdt |tj j jr{tjtj|j}tjjj|j }|j#|nt |tj j$j&rItj|}tjjj|j(}n!t+dt-|j.zddlm}ddlm} |j9|j:}|j=||y #|$r t?dwxYw) a) Validate our descriptor content matches its ed25519 signature. Supported descriptor types include... * :class:`~stem.descriptor.server_descriptor.RelayDescriptor` * :class:`~stem.descriptor.hidden_service.HiddenServiceDescriptorV3` :param stem.descriptor.__init__.Descriptor descriptor: descriptor to validate :raises: * **ValueError** if signing key or descriptor are invalid * **TypeError** if descriptor type is unsupported * **ImportError** if cryptography module or ed25519 support unavailable T)ed25519zKCertificate validation requires the cryptography module and ed25519 supportzWCertificate validation only supported for server and hidden service descriptors, not %srEd25519PublicKeyInvalidSignaturezNDescriptor Ed25519 certificate signature invalid (signature forged or corrupt)N) r7prereqis_crypto_available ImportError isinstancerfserver_descriptorRelayDescriptorhashlibsha256rG_signed_contentdigestr8rL _decode_b64ed25519_signature!_validate_server_desc_signing_keyhidden_serviceHiddenServiceDescriptorV3rrRrr<1cryptography.hazmat.primitives.asymmetric.ed25519rcryptography.exceptionsrfrom_public_bytesrverifyr")r#rfsigned_contentrrrrs r&validatezEd25519CertificateV1.validates\ ;; * *T * : e ff*doo??OOP~~&:&J&J:&VW^^`n))%%11*2N2NOi ,,Z8 J > > X X Y+;;JGn))%%11*2F2FGi orvxBsCsLsLL MMR8i  . .txx 8c jjN+ i g hhis :-F((F9ct|tjjjr t }d}nXt|tjj jr t}d}n!tdt|jztj||jtj}|s td||j!dzS)zu Provides this descriptor's signing constant, appended with the portion of the descriptor that's signed. s(.+router-sig-ed25519 )s(.+)signature zBUG: %s type unexpectedz+Malformed descriptor missing signature liner)rr7rfrrSIG_PREFIX_SERVER_DESCrrSIG_PREFIX_HS_V3r"rr<research get_bytesDOTALLgroup)rfprefixregexmatchs r&rz$Ed25519CertificateV1._signed_contents*doo??OOP%f(e J > > X X Yfe 04 3C3L3LL MM IIeZ113RYY ?E  D EE EKKN ""r(cddlm}ddlm}|jrJt j tjjj|jdz}n|j}|s td |j|}|j|jt j tjjj|j dt" y#|$r tdwxYw)Nrrr=z0Server descriptor missing an ed25519 signing keyzJEd25519KeyCertificate signing key is invalid (signature forged or corrupt))rrrred25519_master_keyrPrQr7r8rL _to_bytesrr"rrrr0r)r#rfrrrrs r&rz6Ed25519CertificateV1._validate_server_desc_signing_keysR8$$$$TYY%8%8%B%B:C`C`%adh%hik$$&k  I JJe  . .{ ;c jj!1!1$))2E2E2O2OPTP\P\2]!^_yay`y!z{ e c ddes A9C;;D )NNNNNNN)r<r=r>r?r'r-r@rHrrrrr __classcell__)rs@r&rGrGsU V@"NN65 %iN##,er(rG)#r?rPrSrzrrstem.descriptor.hidden_servicer7!stem.descriptor.server_descriptor stem.prereq stem.utilstem.util.enumstem.util.str_toolsstem.client.datatyperrrrrwrrrrrr}r8enum UppercaseEnumEnumr rrobjectrCrGrAr(r&rsFP %(33 <>9 99>> ' '     ##$:<  ,,-A9M 2Pu2Pjj3j3ZEe-Eer(