o shE@sUddlmZddlmZmZddlmZmZmZm Z ddl m Z m Z ddl mZddlmZddlmZdd lmZmZdd lmZmZdd lmZdd lmZmZdd lmZddl m!Z!m"Z"m#Z#m$Z$m%Z%ddl&Z&ddl'Z'e'(e)Z*edddGddde Z+edddGddde Z,edddGddde Z-edddGddde Z.edddGddde Z/edddGddde Z0edddGdd d e Z1edddGd!d"d"e Z2edddGd#d$d$e Z3edddGd%d&d&e Z4eGd'd(d(e5eZ6edddGd)d*d*e Z7edddGd+d,d,e Z8edddGd-d.d.e Z9edddGd/d0d0e Z:edddGd1d2d2e Z;e%e:geged?d?e ZDdHdDdEZEdS)I) annotations)AttestationObjectAaguid) AttestationUntrustedAttestationverify_x509_chainAttestationVerifier)websafe_decode_JsonDataObject)CoseKey)x509)default_backend) dataclassfield)Enumunique)date) b64decode b64encode) ContextVar)SequenceMappingAnyOptionalCallableNFT)eqfrozenc@seZdZUded<ded<dS)VersionintmajorminorN__name__ __module__ __qualname____annotations__r'r'E/var/www/html/env_mimamsha/lib/python3.10/site-packages/fido2/mds3.pyr7  rc@seZdZUded<ded<dS)RogueListEntrybytesskrrNr"r'r'r'r(r*=r)r*c@sFeZdZUded<ded<ded<ded<ded<ded<ded <d S) BiometricStatusReportr 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ddd d Z ded<eedddddd d Z ded<d Zded<d Zded<eeddd d Zd ed<eeejdddd d Zded<d S)MetadataBlobPayloadEntryzSequence[StatusReport]status_reportscCr{r|r}rr'r'r(rrz!MetadataBlobPayloadEntry.rr_rtime_of_last_status_changeNrKrcCrr|rrr'r'r(rrrrrcCr)NcSrr'rrr'r'r(rr5MetadataBlobPayloadEntry...r'rr'r'r(rrcCr)NcSrr'rrr'r'r(rrrr'rr'r'r(rrrrzOptional[MetadataStatement]metadata_statementz)Optional[Sequence[BiometricStatusReport]]biometric_status_reports rogueListURLr?rogue_list_urlcCr{r|rrr'r'r(rrrrogue_list_hash)r#r$r%r&rrGrrrrrrrrrrrr+rrr'r'r'r(rsF     rc@sFeZdZUded<ded<eeejddddZd ed <d ed <d S)MetadataBlobPayloadr/rrnocCr{r|r}rr'r'r(r(rzMetadataBlobPayload.rr_r next_updatez"Sequence[MetadataBlobPayloadEntry]entriesN) r#r$r%r&rrGrrrr'r'r'r(r!s  rentryreturnrcCstdd|jD S)zFilters out any revoked metadata entry. This filter will remove any metadata entry which has a status_report with the REVOKED status. css|] }|jtjkVqdSr|)rzrhrp)rrQr'r'r( 8s  z!filter_revoked..)anyr)rr'r'r(filter_revoked2s rcertificate_chainrcCs,|jD]}|jtjkr|j|vrdSqdS)zDenies any attestation that has a compromised attestation key. This filter checks the status reports of a metadata entry and ensures the attestation isn't signed by a key which is marked as compromised. FT)rrzrhrlr)rrrQr'r'r("filter_attestation_key_compromised=s   r _last_entryz.ContextVar[Optional[MetadataBlobPayloadEntry]]csPeZdZdZeedfdfd d Zd ddZd!ddZddZ d"ddZ Z S)#MdsAttestationVerifiera3MDS3 implementation of an AttestationVerifier. The entry_filter is an optional predicate used to filter which metadata entries to include in the lookup for verification. By default, a filter that removes any entries that have a status report indicating the authenticator is REVOKED is used. See: filter_revoked The attestation_filter is an optional predicate used to filter metadata entries while performing attestation validation, and may take into account the Authenticators attestation trust_chain. By default, a filter that will fail any verification that has a trust_chain where one of the certificates is marked as compromised by the metadata statement is used. See: filter_attestation_key_compromised NOTE: The attestation_filter is not used when calling find_entry_by_aaguid nor find_entry_by_chain as no attestation is being verified! Setting either filter (including setting it to None) will replace it, removing the default behavior. :param blob: The MetadataBlobPayload to query for device metadata. :param entry_filter: An optional filter to exclude entries from lookup. :param attestation_filter: An optional filter to fail verification for a given attestation. :param attestation_types: A list of Attestation types to support. Nblobr entry_filterOptional[EntryFilter]attestation_filterOptional[LookupFilter]rOptional[Sequence[Attestation]]cs\t||p dd|_rfdd|jDn|j}dd|D|_dd|D|_dS)NcSsdS)NTr')arSr'r'r(rtsz1MdsAttestationVerifier.__init__..csg|]}|r|qSr'r'rerr'r(rxrz3MdsAttestationVerifier.__init__..cSsi|] }|jr|j|qSr')rrr'r'r( |rz3MdsAttestationVerifier.__init__..cSs"i|] }|jpgD]}||q qSr')r)rrskir'r'r(r}s)super__init___attestation_filterr _aaguid_table _ski_table)selfrrrrr __class__rr(rks  zMdsAttestationVerifier.__init__rrr"Optional[MetadataBlobPayloadEntry]cCs |j|S)zFind an entry by AAGUID. Returns a MetadataBlobPayloadEntry with a matching aaguid field, if found. This method does not take the attestation_filter into account. )rget)rrr'r'r(find_entry_by_aaguids z+MdsAttestationVerifier.find_entry_by_aaguidrrcCsF|D]}t|t}tj|j}||jvr |j|SqdS)aFind an entry by trust chain. Returns a MetadataBlobPayloadEntry containing an attestationCertificateKeyIdentifier which matches one of the certificates in the given chain, if found. This method does not take the attestation_filter into account. N)r load_der_x509_certificaterSubjectKeyIdentifierfrom_public_key public_keydigestr)rrdercertrr'r'r(find_entry_by_chains  z*MdsAttestationVerifier.find_entry_by_chaincCs|jdusJ|jj}|rtd|d||}n td||j}|rxtd||||js?tddS|jsIt ddSt |jdt j }|jjD]}t |t j}||krot||SqXtd|dS) NzUsing AAGUID: z to look up metadataz*Using trust_path chain to look up metadataz Found entry: z-Matched entry did not pass attestation filterz8Matched entry has no metadata_statement, can't validate!z&No attestation root matching subject: )credential_datarloggingdebugrr trust_pathrrwarningr rrissuerrsubjectrsetloggerinfo)rattestation_result auth_datarrrrootrr'r'r( ca_lookupsD       z MdsAttestationVerifier.ca_lookupattestation_objectrclient_data_hashr+c Cs\td}z"z|||tWWt|Sty'YWt|dSwt|w)zLookup a Metadata entry based on an Attestation. Returns the first Metadata entry matching the given attestation and verifies it, including checking it against the attestation_filter. N)rr verify_attestationrresetr)rrrtokenr'r'r( find_entrys      z!MdsAttestationVerifier.find_entry)rrrrrrrr)rrrr)rrrr)rrrr+rr) r#r$r%rxrrrrrrr __classcell__r'r'rr(rOs  'rrr+ trust_rootrc Cs|dd\}}t|}dd|dD\}}|durLdd|dgD}||g7}t|t|d t}t |d  | } | ||nt d t|S) aParse a FIDO MDS3 blob and verifies its signature. See https://fidoalliance.org/metadata/ for details on obtaining the blob, as well as the CA certificate used to sign it. The resulting MetadataBlobPayload can be used to lookup metadata entries for specific Authenticators, or used with the MdsAttestationVerifier to verify that the attestation from a WebAuthn registration is valid and included in the metadata blob. NOTE: If trust_root is None, the signature of the blob will NOT be verified! .rcss|] }tt|VqdSr|)jsonloadsr rr'r'r(rszparse_blob..NcSrr'r)rrcr'r'r(rrzparse_blob..x5cralgz?Parsing MDS blob without trust anchor, CONTENT IS NOT VERIFIED!)rsplitr splitrrr rrr for_namefrom_cryptography_keyrverifyr warnr from_dict) rrmessage signature_b64 signatureheaderpayloadchainleafrr'r'r( parse_blobs    r+)rrrr)rrrrrr)rr+rrrr)F __future__rwebauthnrr attestationrrrr utilsr r coser cryptographyr cryptography.hazmat.backendsr dataclassesrrenumrrdatetimerbase64rr contextvarsrtypingrrrrrrr getLoggerr#r rr*r-r6r=rHrJrPrTr]r/rhryrrrrr EntryFilterr+ LookupFilterrrrr&rr+r'r'r'r(sp                     8 %