Update range proof to match the paper #26
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
survived
commented
Aug 10, 2021
| } else if secret_x + &data.w1[i] > range_scaled_third | ||
| && secret_x + &data.w1[i] < range_scaled_two_thirds | ||
| } else if secret_x + &data.w1[i] >= range_scaled_third | ||
| && secret_x + &data.w1[i] <= range_scaled_two_thirds |
There was a problem hiding this comment.
See Lindell 17 paper, appendix A, step 4b:
survived
commented
Aug 10, 2021
| || (*w1 >= BigInt::zero() | ||
| && *w1 <= range_scaled_third | ||
| && *w2 >= range_scaled_third | ||
| && *w2 <= range_scaled_two_thirds); |
There was a problem hiding this comment.
See Lindell 17 paper, appendix A, "V's output", step 1:
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
While investigating #25, I found that some bounds check is inclusive in the paper, and exclusive in implementation. I fixed this, and test from #25 has never failed again.
Fixes #25