Paper 2015/830
Unique Signature with Short Output from CDH Assumption
Shiuan-Tzuo Shen, Amir Rezapour, and Wen-Guey Tzeng
Abstract
We give a simple and efficient construction of unique signature on groups equipped with bilinear map. In contrast to prior works, our proof of security is based on computational Diffie-Hellman problem in the random oracle model. Meanwhile, the resulting signature consists of only one group element. Due to its simplicity, security and efficiency, our scheme is suitable for those situations that require to overcome communication bottlenecks. Moreover, the unique signature is a building block for designing chosen-ciphertext secure cryptosystems and verifiable random functions, which have found many interesting applications in cryptographic protocol design.
Note: Updated version
Metadata
- Available format(s)
-
PDF
- Publication info
- Published elsewhere. Major revision. The 9th International Conference on Provable Security (ProvSec 2015)
- Keywords
- Unique signaturestrongly unforgeable signatureverifiable unpredictable functionverifiable random functionbilinear maprandom oracle model
- Contact author(s)
- rezapour @ cs nctu edu tw
- History
- 2015-10-20: last of 2 revisions
- 2015-08-26: received
- See all versions
- Short URL
- https://ia.cr/2015/830
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2015/830,
author = {Shiuan-Tzuo Shen and Amir Rezapour and Wen-Guey Tzeng},
title = {Unique Signature with Short Output from {CDH} Assumption},
howpublished = {Cryptology {ePrint} Archive, Paper 2015/830},
year = {2015},
url = {https://eprint.iacr.org/2015/830}
}