Security Enforcement, AES256 Migration & Status List Gap Closure

Status: Released
Published: 22.07.2026
Effective: 19.08.2026
Affected Components: Generic Verifier, swiyu Wallet
Internal Reference: EIDARTFE-1531, EIDARTFE-1564, EIDARTFE-1717, EIDARTFE-1726

This dossier bundles three related Verifier-side changes into a single migration wave.

  1. It closes the remaining security-enforcement gaps in OpenID for Verifiable Presentations (OID4VP) by enforcing encrypted Authorization Responses (direct_post.jwt), DCQL-only presentation queries, and Signed Presentation Requests, all of which are already implemented but currently only optionally supported under the EMC (Expand-Migrate-Contract) pattern.
  2. It migrates encryption from AES128-GCM to AES256-GCM; following EMC, all components first accept both algorithms, with the Wallet required to support this ahead of the Issuer and Verifier.
  3. It closes the remaining Status List gaps required for the swiyu 1.0 go-live, including status-verification configurability and caching. During the transition period, non-enforcing behavior continues to be accepted where noted; afterwards, non-compliant Verifiers can no longer participate in the ecosystem.

Action required

⚠️ Required soon Will become mandatory soon
🚨 Breaking Action required, something stops working
🆕 Optional New feature, opt-in
✅ Improvement Enhancement, no action needed
🐞 Fix Bug fix
💡 Informational Additional background information, no action needed

Generic Verifier

Version 4.x.x

  1. See: Release notes

Migration steps

  1. Migrate to generic Verifier 4.x.x. See migrations guides
  2. Contract phase: Payload Encryption and signed meta data become mandatory at the swiyu Wallet; non-conforming Verifier can no longer verify credentials from a swiyu Wallet.

Timeline

19.08.2026 Wallet-side 1.17.x security enforced (payload encryption) requires the generic Verifier 4.x.x.