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Erschienen in:
2009 | OriginalPaper | Buchkapitel
A Storage Efficient Redactable Signature in the Standard Model
verfasst von : Ryo Nojima, Jin Tamura, Youki Kadobayashi, Hiroaki Kikuchi
Erschienen in: Information Security
Verlag: Springer Berlin Heidelberg
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In this paper, we propose a simple redactable signature scheme for super-sets whose message-signature size is
O
(|
M
| +
τ
), where
τ
is a security parameter and
M
is a message to be signed. The scheme proposed by Johnson et al. in CT-RSA 2003 has the similar performance but this scheme was proven secure based on the RSA assumption in the random oracle model. In this paper, we show that such a scheme can be constructed based on the RSA assumption without the random oracles.