openid / openid/OpenID4VCI

[S2S] - Ratify Encryption/Client Origin Mechanism

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server-to-server
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Stars
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Forks
41
PR merge metrics
No merged PRs in 30d

Description

This is an issue tracking consensus on the mechanism for encryption in s2s. Current text proposes:

  • Use JWE, mandating HPKE
  • Use JWKs for keys, wrapped to provide attestations (using proofs) and purpose
  • Use nested sign-then-encrypt JWTs for client origin, binding to jwk thumbprint

Still TODO: if we have any mandated supported curves and how to do post-quantum.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the current proposed S2S text described in this issue: JWE with HPKE, JWKs with attestations and purpose, and nested sign-then-encrypt JWTs for client origin. Determine the mandated supported curves and the post-quantum approach, then document the agreed encryption and origin mechanism once consensus is reached.

Written by the indexing model from the issue text.

Assessment

Domain
cryptography, security
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
25/100

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