feat(metadata): Verifiable Credentials (PR7)#43
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Macht Metadaten verifizierbar/vertrauenswürdig: das JSON-LD wird als W3C Verifiable Credential signiert – über den vorhandenen pure-Python-EdDSA-Stack (sdata.did.jose), also OHNE neue/externe Krypto-Dependency. sdata/semantic.py: - to_verifiable_credential(metadata, issuer_did, issuer_priv_jwk, kid=, ...): wickelt to_jsonld() als credentialSubject (W3C VC, type SdataMetadataCredential) und signiert als Compact-JWS (typ vc+ld+jwt). - verify_credential(vc_jws, pub_jwk): verifiziert die Signatur und liefert das credentialSubject (JSON-LD); wirft VerificationError bei Manipulation. Delegatoren: Metadata.to_verifiable_credential und Metadata.from_verifiable_credential (verifizieren -> Metadata via from_jsonld). Tests test_semantic_vc.py (Sign/Verify-Roundtrip, Manipulationsnachweis, extra_claims, bare Metadata ohne @id). Coverage 100%.
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Letzter PR des Rückgrat-Programms: verifizierbare, signierte Metadaten. Nutzt den vorhandenen pure-Python-EdDSA-Stack (
sdata.did) — keine neue/externe Krypto-Dependency.sdata/semantic.pyto_verifiable_credential(metadata, issuer_did, issuer_priv_jwk, …)— wickeltto_jsonld()alscredentialSubject(W3C VC,type: SdataMetadataCredential) und signiert als Compact-JWS (typ: vc+ld+jwt).verify_credential(vc_jws, pub_jwk)— verifiziert die Signatur, liefert dascredentialSubject(JSON-LD);VerificationErrorbei Manipulation.Delegatoren
Metadata.to_verifiable_credentialundMetadata.from_verifiable_credential(verifizieren → Metadata viafrom_jsonld).Tests/Coverage
tests/test_semantic_vc.py(Sign/Verify-Roundtrip, Manipulationsnachweis,extra_claims, bare Metadata ohne@id). 461 passed, 9 skipped, Coverage 100 %.