## CryptoDB

### Paper: Strongly Unforgeable ID-based Signatures Without Random Oracles

Authors: Chifumi Sato Takeshi Okamoto Eiji Okamoto URL: http://eprint.iacr.org/2008/095 Search ePrint Search Google There is an open problem to construct ID-based signature schemes which satisfy strongly EUF-ID-CMA, without random oracles. It is known that strongly EUF-ID-CMA is a concept of the strongest security in ID-based signatures. In this paper, we propose a solution to the open problem, that is an ID-based signature scheme, which satisfies strongly EUF-ID-CMA, without random oracles for the first time. Security of the scheme is based on the difficulty to solve three problems related to the Diffie-Hellman problem and a one-way isomorphism.
##### BibTeX
@misc{eprint-2008-17772,
title={Strongly Unforgeable ID-based Signatures Without Random Oracles},
booktitle={IACR Eprint archive},
keywords={cryptographic protocols / Digital signatures, ID-based signatures, Strongly EUF-ID-CMA, Standard models},
url={http://eprint.iacr.org/2008/095},
note={ c-sato@c4t.jp 13964 received 29 Feb 2008, last revised 26 Mar 2008},
author={Chifumi Sato and Takeshi Okamoto and Eiji Okamoto},
year=2008
}