Paper 2020/377 Original: eprint.iacr.org/2020/377 ↗
Oblivious tight compaction in O(n) time with smaller constant
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)
PDF- Category
- Cryptographic protocols
- Publication info
- Preprint.
- History
- 2020-06-08: last updated
- 2020-04-02: published
- Short URL
- https://ia.cr/2020/377
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2020/377,
author = {Samuel Dittmer and Rafail Ostrovsky},
title = {Oblivious tight compaction in O(n) time with smaller constant},
howpublished = {Cryptology {ePrint} Archive, Paper 2020/377},
year = {2020},
url = {https://eprint.iacr.org/2020/377}
}