2000 | OriginalPaper | Buchkapitel
A New Forward-Secure Digital Signature Scheme
verfasst von : Michel Abdalla, Leonid Reyzin
Erschienen in: Advances in Cryptology — ASIACRYPT 2000
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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We improve the Bellare-Miner (Crypto’ 99) construction of signature schemes with forward security in the random oracle model. Our scheme has significantly shorter keys and is, therefore, more practical. By using a direct proof technique not used for forward-secure schemes before, we are able to provide better security bounds for the original construction as well as for our scheme.Bellare and Miner also presented a method for constructing such schemes without the use of the random oracle. We conclude by proposing an improvement to their method and an additional, new method for accomplishing this.