Crate tsp_ltv 

tsp-ltv

Shared timestamping (RFC 3161) and long-term validation infrastructure for Advanced Electronic Signature (AdES) formats.

This crate provides the core types and network clients for:

• TSP: RFC 3161 timestamp requests, responses, and validation
• OCSP: Online Certificate Status Protocol client (RFC 6960)
• CRL: Certificate Revocation List fetching and caching (RFC 5280)
• Trust: Certificate trust stores, chain building, and validation

It is format-agnostic — it does not know about PDF, XML, or JSON. Each AdES crate (underskrift for PAdES/CAdES, bergshamra for XAdES, jades for JAdES) builds its own format-specific embedding on top of these shared clients.

Modules

crypto

Cryptographic primitives for certificate and signature verification.

der_utils

Shared DER/ASN.1 parsing and encoding utilities.

error

Error types for the tsp-ltv crate.

ltv

Long-term validation (LTV) support.

net

Shared HTTP-fetch SSRF hardening for attacker-influenced URLs.

trust

Trust store management for certificate chain validation.

tsp

RFC 3161 timestamp client.

Structs

BackendInfo

Attested information about the compile-time selected providers.

Capability

One advertised provider capability.

Enums

BackendId

Selected document-cryptography implementation.

FipsStatus

Runtime FIPS state for the selected providers.

Operation

A provider operation, parameterized by the requested algorithm where useful.

TlsBackendId

Selected TLS cryptography implementation.

Functions

backend_info

Inspect selected providers without triggering implicit initialization.

capabilities

Return the complete capability registry for the selected document provider.

initialize_backend

Explicitly initialize and attest every selected provider.

supports

Report whether the selected document provider supports an operation.