[kmac] Why is "SHA3 engine internal error" recoverable in an app interface?
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@etterli is already working on this.
Since Sep 4, 2026.
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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.
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