lowRISC / lowRISC/opentitan

[kmac] Why is "SHA3 engine internal error" recoverable in an app interface?

Open
#31,235 4 comments 0 reactions 1 assignee View on GitHub

@etterli is already working on this.

Since Sep 4, 2026.

IP:kmac
Dominant language
SystemVerilog
Stars
3.6k
Forks
1.1k
Avg merge
2d 22h
Merged PRs (30d)
141

Description

### Description

This error happens if the `sha3` module reports an error when it is running. The documentation in the app interface section describes this as something that cannot happen in an app session without fault injection.

Is this true?

If so, surely it should be a fatal error? I think this would make the design slightly simpler and would also simplify the verification.

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.

Assessment

This issue has not been assessed yet.

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.