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signer API: improve graceful failure testing and fix thus revealed error handling bug #556

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merged 4 commits into from
Apr 12, 2023

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@lukpueh lukpueh commented Mar 30, 2023

  • Improve tests on runner that don't have extra dependencies installed:

    • refactor test to add new cases more easily
    • test that verify_signature of SSlibKey and SigstoreKey fails gracefully, if optional dependencies are missing
    • test that ed25519 pure python fallback works for verification
  • Fix SSlibKey.verify_signature to re-raise UnsupportedLibraryError as VerificationError

Make test table driven to easily add other Key implementations.

Signed-off-by: Lukas Puehringer <lukas.puehringer@nyu.edu>
Signed-off-by: Lukas Puehringer <lukas.puehringer@nyu.edu>
Key.verify_signature implementations should only raise
UnverifiedSignatureError or VerificationError, even if an optional
dependency is missing.

This commit changes SSlibKey.verify_signature to re-raise
UnsupportedLibrarError as VerificationError.

Signed-off-by: Lukas Puehringer <lukas.puehringer@nyu.edu>
Test SSlibKey and SigstoreKey in addition to already tested GPGKey.

Signed-off-by: Lukas Puehringer <lukas.puehringer@nyu.edu>
@lukpueh lukpueh requested review from jku and adityasaky and removed request for adityasaky March 31, 2023 07:38
@jku jku merged commit 5c7ef18 into secure-systems-lab:main Apr 12, 2023
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2 participants