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Erschienen in:
A Simpler Variant of Universally Composable Security for Standard Multiparty Computation Kapitel lesen Erstes Kapitel lesen

2015 | OriginalPaper | Buchkapitel

Structure-Preserving Signatures from Standard Assumptions, Revisited

verfasst von : Eike Kiltz, Jiaxin Pan, Hoeteck Wee

Erschienen in: Advances in Cryptology -- CRYPTO 2015

Verlag: Springer Berlin Heidelberg

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Abstract

Structure-preserving signatures (SPS) are pairing-based signatures where all the messages, signatures and public keys are group elements, with numerous applications in public-key cryptography. We present new, simple and improved SPS constructions under standard assumptions via a conceptually different approach. Our constructions significantly narrow the gap between existing constructions from standard assumptions and optimal schemes in the generic group model.

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Vorheriges Kapitel Programmable Hash Functions Go Private: Constructions and Applications to (Homomorphic) Signatures with Shorter Public Keys
Nächstes Kapitel Short Group Signatures via Structure-Preserving Signatures: Standard Model Security from Simple Assumptions
Fußnoten
1
For fixed generators \(g_1\) and \(g_2\) of \(\mathbb {G}_1\) and \(\mathbb {G}_2\), respectively, and for a matrix \(\mathbf {M}\in \mathbb {Z}_q^{n\times t}\), we define \([\mathbf {M}]_1:=g_1^{\mathbf {M}}\) and \([\mathbf {M}]_2:=g_2^{\mathbf {M}}\) (componentwise).
 
2
We refer the reader to Sect. 2.2 for a more detailed treatment of the assumptions.
 
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Metadaten
Titel
Structure-Preserving Signatures from Standard Assumptions, Revisited
verfasst von
Eike Kiltz
Jiaxin Pan
Hoeteck Wee
Copyright-Jahr
2015
Verlag
Springer Berlin Heidelberg
Buch
Advances in Cryptology -- CRYPTO 2015

Print ISBN: 978-3-662-47999-5

Electronic ISBN: 978-3-662-48000-7

Copyright-Jahr: 2015

DOI
https://doi.org/10.1007/978-3-662-48000-7_14

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