[CHEETAH] Improve the B2A by 50% via collapse COTs #687
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According to the trick from the ABY paper. We can use `k` instances of COTs to compute the B2A. Also the i-th COT only need to transfer `k-i` bits. This on average save about 50% communication of the current B2A implementation which call k instances of COT over k-bit values.
anakinxc
approved these changes
May 16, 2024
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According to the trick from the ABY paper. We can use
kinstances of COTs to compute the B2A. Also the i-th COT only need to transferk-ibits. This on average save about 50% communication of the current B2A implementation which call k instances of COT over k-bit values.Pull Request
What problem does this PR solve?
Issue Number: Fixed #
Possible side effects?
Performance:
Backward compatibility: