e-Evidence, cross-border exchange, and ETSI TS 103 462 ILHI
Cross-border legal cooperation adds requesting and responding authorities, differing national formats, time limits, secure channels, and legal-assistance decisions. ETSI TS 103 462 defines an inter-LEMF handover interface (ILHI). ETSI TS 104 144 supports interfaces for the EU e-Evidence Regulation. Technical interoperability never overrides jurisdiction or legal review.
Safety boundary: this chapter teaches lawful, governed system design from public standards. It does not provide operational targeting, activation, decryption, surveillance-evasion, or covert collection instructions.
The mental model
| Concept | Plain meaning | Control that must travel with it |
|---|---|---|
| Requesting/responding LEMF | Authorities exchange approved material across an inter-LEMF path | Each side keeps its legal responsibility |
| ILHI | Standardized inter-LEMF transport and interworking | Bilateral agreement and secure trust are required |
| Interworking function | Maps local formats to agreed cross-border format | Preserve provenance and report transformation |
| e-Evidence order | Structured cross-border order to a service provider | Validate authority, service, deadlines, and remedies |
| Conflict of law | Duties in different jurisdictions may conflict | Stop and escalate; do not solve in code |
| Delivery country | Recipient and onward handling are jurisdiction-bound | Routing must match approved legal path |
Apply it as a controlled workflow
- Identify requesting, responding, provider, and receiving legal roles.
- Validate the cooperation instrument and any grounds for refusal or escalation.
- Pin ILHI/e-evidence versions and bilateral profiles.
- Establish approved endpoints, trust anchors, and interworking mappings.
- Test receipt, delay, partial availability, translation, and onward-custody evidence.
- Close both sides with aligned status and retention outcomes.
Evidence to demand
- Cross-border routing cannot be changed by ordinary network failover.
- Original and transformed representations remain linked and integrity-protected.
- Legal deadlines are visible separately from technical latency.
- Unknown national extensions stop safely.
Failure to reason about
A disaster-recovery route would send cross-border handover through an unapproved country. Ordinary network resilience would violate legal routing. Use policy-aware route constraints and a controlled unavailable state.
Feynman check
Cross-border exchange is like two courts using different forms. A trusted translator can align the forms, but only the law decides whether the package may cross the border.