fix: fail closed when proof-of-life has no burst frames - #441
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northersubair wants to merge 3 commits into
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fix: fail closed when proof-of-life has no burst frames#441northersubair wants to merge 3 commits into
northersubair wants to merge 3 commits into
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Selfie-only requests (no burst frames) previously passed liveness because the burst_required flag defaulted to satisfied when no frames were supplied, collapsing the anti-spoon signal to 'a face is present'. Make liveness evidence a mandatory precondition: without burst frames, is_real_person is always false with a clear reason. Burst- based requests are scored on actual blink/head-movement evidence. Closes ChainForgee#431
The conftest was replacing proof_of_life with a MagicMock at module level, causing all tests to get MagicMock objects instead of real classes. The cascade classifier loading happens in __init__ (not at module level), so the stub is unnecessary with mocked cv2.
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Summary
Selfie-only requests (no burst frames) previously passed liveness because the burst_required flag defaulted to satisfied when no frames were supplied, collapsing the anti-fraud signal to "a face is present".
Make liveness evidence a mandatory precondition: without burst frames, is_real_person is always false with a clear reason. Burst-based requests are scored on actual blink/head-movement evidence.
Closes #431
Testing
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