openid / openid/OpenID4VCI

[S2S]: Replay Protection

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#794 3 comments 0 reactions 0 assignees View on GitHub

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server-to-server
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Description

@c2bo - "I might be wrong, but given the current definitions, how are we guaranteeing freshness / preventing replay - I don't see an issuer provided input currently (since sessionID is potentially long-lasting)?"

Opening Issue to tracking freshness property of the signatures in the protocol. Currently it makes use of wallet-generated randomness and then, by design, does not require freshness for things like device keys, verification data etc.

originally in https://github.com/openid/OpenID4VCI/pull/753/changes#r3516024417

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 by reading the current protocol definitions and the discussion in PR #753, especially the cited review comment. Clarify the freshness and replay-protection requirements for signatures, then document the resulting protocol change and its acceptance criteria.

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
Active
Clarity
Needs clarification
Newbie friendliness
35/100

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