## CryptoDB

### Paper: Efficient Conversion of Secret-shared Values Between Different Fields

Authors: Ivan Damgård Rune Thorbek URL: http://eprint.iacr.org/2008/221 Search ePrint Search Google 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.
##### BibTeX
@misc{eprint-2008-17898,
title={Efficient Conversion of Secret-shared Values Between Different Fields},
booktitle={IACR Eprint archive},
keywords={cryptographic protocols / conversion},
url={http://eprint.iacr.org/2008/221},
note={ thorbek@brics.dk 14027 received 16 May 2008, last revised 28 May 2008},
author={Ivan Damgård and Rune Thorbek},
year=2008
}