Module credentials 

W3C Verifiable Credentials — issue / hold / present / verify, signed with real ML-DSA-65 (FIPS-204) via crate::crypto::fiduciary_crypto.

Consolidated from two stranded worktree branches (0.0.19-g2-vc = the runtime, 0.0.19-g3-cbor-ld = the codecs) into one module with a single Credential type — the duplicate Credential each branch had defined is unified here.

Verification is fail-closed: a missing proof, a tampered credential, or a failed signature check all return an error, never a silent false/true.

Modules

codecs

Credential transport codecs (from 0.0.19-g3-cbor-ld) — encode/decode a Credential to alternative carriers. Uses the unified Credential type from the parent module (the branch’s duplicate was dropped).

Structs

Credential

W3C Verifiable Credential Data Model.

Presentation

W3C Verifiable Presentation Data Model.

Proof

Proof object (Data Integrity Proof) carrying the ML-DSA signature.

VcRuntime

Issues, holds, presents, and verifies Verifiable Credentials with ML-DSA-65 proofs.

Enums

StatusResult

VcError

Error types for Verifiable Credentials.

Traits

CredentialStatus

Credential status (revocation/suspension) interface.

SelectiveDisclosure

Selective-disclosure interface (BBS-style); not yet implemented.

ZkDisclosure

Zero-knowledge predicate-disclosure interface; not yet implemented.