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Paper 2020/377
Oblivious tight compaction in O(n) time with smaller constant
Samuel Dittmer and Rafail Ostrovsky
Abstract
Oblivious compaction is a crucial building block for hash-based oblivious RAM. Asharov et al. recently gave a O(n) algorithm for oblivious tight compaction. Their algorithm is deterministic and asymptotically optimal, but it is not practical to implement because the implied constant is $\gg 2^{38}$. We give a new algorithm for oblivious tight compaction that runs in time $< 16014.54n$. As part of our construction, we give a new result in the bootstrap percolation of random regular graphs.
Metadata
- Available format(s)
- Category
- Cryptographic protocols
- Publication info
- Preprint. MINOR revision.
- Keywords
- Oblivious RAMcombinatorial optimizationbootstrap percolation
- Contact author(s)
- samuel dittmer @ gmail com,rafail @ cs ucla edu
- History
- 2020-06-08: last of 2 revisions
- 2020-04-02: received
- See all versions
- Short URL
- https://ia.cr/2020/377
- License
-
CC BY