Source: oas/oas/oas-attestation/src/lib.rs. SHA-256: 7effa9fd9902e4f2a6dfbb5e56081f02fd2f4eb2f75299648ce58a5cb9c64078.

This source reference follows declared modules and preserves feature attributes. It includes public declarations and implementation methods in those modules. Private-module exports and trait resolution still require the compiler; not every declaration is a crate-root import. Function bodies and constant values are omitted. Source comments describe their implementation context and are not a production deployment claim.

credential

oas-attestation

W3C Verifiable Credential attestation support for the Open Agent Specification (OAS).

This crate implements OAS Specification §13 — Attestation Integration, providing creation, signing, and verification of attestations about autonomous entities.

Key Types

OasCredential — W3C VC with OAS constraints
AttestationType — The six standard attestation types
CredentialProof — Ed25519Signature2020 proof
[AttestationError] — Attestation-specific errors

Attestation Types (§13.2)

Type	Description
`SecurityAudit`	Results of security analysis
`BehaviorAttestation`	Observed runtime behavior
`CapabilityVerification`	Capability verification results
`ComplianceAttestation`	Regulatory compliance
`ExpertEndorsement`	Domain expert endorsement
`CommunityReview`	Community-sourced review

Example

use oas_attestation::credential::OasCredential;
use oas_attestation::types::AttestationType;
use oas_attestation::sign::sign_credential;
use oas_attestation::verify::verify_credential;
use oas_crypto::keypair::OasKeyPair;

// Build a credential
let keypair = OasKeyPair::generate();
let cred = OasCredential::builder()
    .issuer("did:oas:test:hmr:auditor")
    .subject_id("did:oas:test:agent:target")
    .attestation_type(AttestationType::SecurityAudit)
    .issuance_date("2026-01-15T00:00:00Z")
    .subject_claim("auditType", serde_json::json!("codeAudit"))
    .subject_claim("result", serde_json::json!("pass"))
    .subject_claim("severityFindings", serde_json::json!({"critical": 0}))
    .subject_claim("toolOrMethodology", serde_json::json!("OWASP"))
    .subject_claim("auditDate", serde_json::json!("2026-01-15T00:00:00Z"))
    .build()
    .unwrap();

// Sign it
let signed = sign_credential(
    &cred, &keypair,
    "did:oas:test:hmr:auditor#key-1",
    "2026-01-15T00:00:00Z",
).unwrap();

// Verify it
let result = verify_credential(&signed, &keypair.verifying_key_bytes());
assert!(result.is_ok());

pub mod credential;

Source line: 62.

data_integrity_2025

pub mod data_integrity_2025;

Source line: 63.

error

pub mod error;

Source line: 64.

lineage_vc

pub mod lineage_vc;

Source line: 65.

oid4vp

pub mod oid4vp;

Source line: 66.

presentation

pub mod presentation;

Source line: 67.

proof_formats

pub mod proof_formats;

Source line: 68.

sd_jwt_vc

pub mod sd_jwt_vc;

Source line: 69.

sign

pub mod sign;

Source line: 70.

signer

pub mod signer;

Source line: 71.

types

pub mod types;

Source line: 72.

vc_jose

pub mod vc_jose;

Source line: 73.

verify

pub mod verify;

Source line: 74.

pub use credential::ContextMode;

pub use credential::ContextMode;

Source line: 76.

pub use data_integrity_2025::{

algorithm_to_cryptosuite, cryptosuite_to_algorithm, sign_credential_data_integrity, verify_credential_data_integrity, CRYPTOSUITE_BBS_2023, CRYPTOSUITE_ECDSA_2019, CRYPTOSUITE_EDDSA_2022, DATA_INTEGRITY_PROOF_TYPE, };

pub use data_integrity_2025::{
    algorithm_to_cryptosuite, cryptosuite_to_algorithm, sign_credential_data_integrity,
    verify_credential_data_integrity, CRYPTOSUITE_BBS_2023, CRYPTOSUITE_ECDSA_2019,
    CRYPTOSUITE_EDDSA_2022, DATA_INTEGRITY_PROOF_TYPE,
};

Source line: 77.

pub use error::AttestationError;

pub use error::AttestationError;

Source line: 82.

pub use lineage_vc::{

lineage_proof_from_credential, lineage_proof_to_credential, LineageAttestationContext, LineageAttestationData, LineageRootKind, };

pub use lineage_vc::{
    lineage_proof_from_credential, lineage_proof_to_credential, LineageAttestationContext,
    LineageAttestationData, LineageRootKind,
};

Source line: 83.

pub use oid4vp::{

create_authorization_request, create_oid4vp_response, verify_oid4vp_response, AuthorizationRequest, Constraints, DescriptorMap, InputDescriptor, InputField, Oid4vpResponse, PresentationDefinition, PresentationSubmission, };

pub use oid4vp::{
    create_authorization_request, create_oid4vp_response, verify_oid4vp_response,
    AuthorizationRequest, Constraints, DescriptorMap, InputDescriptor, InputField, Oid4vpResponse,
    PresentationDefinition, PresentationSubmission,
};

Source line: 87.

pub use presentation::{

is_authority_bearing, sign_presentation, verify_presentation, verify_presentation_holder_binding, verify_presentation_holder_binding_with_lineage, verify_presentation_holder_binding_with_resolved_lineage, OasPresentation, PresentationProof, };

pub use presentation::{
    is_authority_bearing, sign_presentation, verify_presentation,
    verify_presentation_holder_binding, verify_presentation_holder_binding_with_lineage,
    verify_presentation_holder_binding_with_resolved_lineage, OasPresentation, PresentationProof,
};

Source line: 92.

pub use proof_formats::{Ed25519Signature2020Format, ProofFormat, ProofFormatId};

pub use proof_formats::{Ed25519Signature2020Format, ProofFormat, ProofFormatId};

Source line: 97.

pub use sd_jwt_vc::{

present_sd_jwt_vc, sign_credential_sd_jwt_vc, verify_sd_jwt_vc, Disclosure, SdJwtVc, SdJwtVcHeader, SdJwtVcPayload, SdJwtVcSignOptions, };

pub use sd_jwt_vc::{
    present_sd_jwt_vc, sign_credential_sd_jwt_vc, verify_sd_jwt_vc, Disclosure, SdJwtVc,
    SdJwtVcHeader, SdJwtVcPayload, SdJwtVcSignOptions,
};

Source line: 98.

pub use signer::{OasKeyPairSigner, OasKeyPairVerifier, Signer, Verifier, ALG_EDDSA};

pub use signer::{OasKeyPairSigner, OasKeyPairVerifier, Signer, Verifier, ALG_EDDSA};

Source line: 102.

pub use vc_jose::{

parse_jwt_vc, sign_credential_jwt_vc, verify_jwt_vc, JwtVc, JwtVcHeader, JwtVcPayload, JwtVcSignOptions, };

pub use vc_jose::{
    parse_jwt_vc, sign_credential_jwt_vc, verify_jwt_vc, JwtVc, JwtVcHeader, JwtVcPayload,
    JwtVcSignOptions,
};

Source line: 103.

oas-attestation · crate