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secret-sharing/src/churp/switch: Verify combined bivariate polynomial #5897

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merged 4 commits into from
Oct 14, 2024

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@peternose peternose added the c:key management Category: key management label Oct 11, 2024
@peternose peternose linked an issue Oct 11, 2024 that may be closed by this pull request
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@peternose peternose marked this pull request as ready for review October 11, 2024 12:38
@peternose peternose force-pushed the peternose/internal/verify-bp-leading-coefficients branch from 55a4d7d to 5456940 Compare October 11, 2024 12:48
@peternose peternose marked this pull request as draft October 11, 2024 14:23
@peternose peternose force-pushed the peternose/internal/verify-bp-leading-coefficients branch 3 times, most recently from 63911bc to cc61250 Compare October 11, 2024 15:02
@peternose peternose marked this pull request as ready for review October 11, 2024 15:31
After all bivariate shares are collected and the switch either
creates a new shareholder or proactivates the share of an existing
one, the new share should be verified to ensure that the verification
matrix of the combined bivariate polynomial satisfies the non-zero
leading term requirements.
@kostko kostko force-pushed the peternose/internal/verify-bp-leading-coefficients branch from cc61250 to 30bb325 Compare October 14, 2024 12:45
@kostko kostko enabled auto-merge October 14, 2024 13:32
@kostko kostko merged commit 3f241f7 into master Oct 14, 2024
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@kostko kostko deleted the peternose/internal/verify-bp-leading-coefficients branch October 14, 2024 13:33
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some coefficients should be non-zero
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