secret-sharing: Zeroize sensitive data #5928
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PrimeField implements the Copy trait, which means values are copied when passed as parameters. To prevent sensitive data from being replicated, the switch point struct should accumulate points rather than coordinates.
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Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## master #5928 +/- ##
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Coverage 64.62% 64.62%
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Files 627 627
Lines 64292 64292
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+ Hits 41546 41550 +4
+ Misses 17823 17820 -3
+ Partials 4923 4922 -1 ☔ View full report in Codecov by Sentry. |
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The AddAssign, SubAssign, and MulAssign functions can now be used only when the prime field supports zeroization. This ensures that any leftover data from heap reallocation, when the right-hand-side polynomial has more coefficients than the left-hand-side, is zeroized. An alternative solution is to remove these functions, but this could lead to performance drawbacks.
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