Paper 2008/221 Original: eprint.iacr.org/2008/221 ↗
Efficient Conversion of Secret-shared Values Between Different Fields
Abstract
We show how to effectively convert a secret-shared bit $b$ over a prime field to another field. If initially given a random replicated secret share this conversion can be done by the cost of revealing one secret shared value. By using a pseudo-random function it is possible to convert arbitrary many bit values from one initial random replicated share. Furthermore, we generalize the conversion to handle general values of a bounded size.
Metadata
- Available format(s)
PDF- Category
- Cryptographic protocols
- Publication info
- Preprint.
- History
- 2008-05-28: last updated
- 2008-05-25: published
- Short URL
- https://ia.cr/2008/221
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2008/221,
author = {Ivan Damgard and Rune Thorbek},
title = {Efficient Conversion of Secret-shared Values Between Different Fields},
howpublished = {Cryptology {ePrint} Archive, Paper 2008/221},
year = {2008},
url = {https://eprint.iacr.org/2008/221}
}