Paper 2012/243 Original: eprint.iacr.org/2012/243 ↗
COMPRESS MULTIPLE CIPHERTEXTS USING ELGAMAL ENCRYPTION SCHEMES
Abstract
In this work we deal with the problem of how to squeeze multiple ciphertexts without losing original message information. To do so, we formalize the notion of decompos- ability for public-key encryption and investigate why adding decomposability is challenging. We construct an ElGamal encryption scheme over extension fields, and show that it supports the efficient decomposition. We then analyze security of our scheme under the standard DDH assumption, and evaluate the performance of our construction.
Metadata
- Available format(s)
PDF- Publication info
- Preprint.
- History
- 2012-10-25: last updated
- 2012-05-03: published
- Short URL
- https://ia.cr/2012/243
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2012/243,
author = {MYUNGSUN KIM and JIHYE KIM and JUNG HEE CHEON},
title = {COMPRESS MULTIPLE CIPHERTEXTS USING ELGAMAL ENCRYPTION SCHEMES},
howpublished = {Cryptology {ePrint} Archive, Paper 2012/243},
year = {2012},
url = {https://eprint.iacr.org/2012/243}
}