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JCST
2008
120views more  JCST 2008»
13 years 4 months ago
Generic Transformation from Weakly to Strongly Unforgeable Signatures
Current techniques for transforming unforgeable signature schemes (the forged message has never been signed) to strongly unforgeable ones (the forged message could have been signed...
Qiong Huang, Duncan S. Wong, Jin Li, Yiming Zhao
CTRSA
2007
Springer
146views Cryptology» more  CTRSA 2007»
13 years 10 months ago
How to Strengthen Any Weakly Unforgeable Signature into a Strongly Unforgeable Signature
Standard signature schemes are usually designed only to achieve weak unforgeability – i.e. preventing forgery of signatures on new messages not previously signed. However, most s...
Ron Steinfeld, Josef Pieprzyk, Huaxiong Wang
ACNS
2007
Springer
112views Cryptology» more  ACNS 2007»
13 years 10 months ago
Generic Transformation to Strongly Unforgeable Signatures
Recently, there are several generic transformation techniques proposed for converting unforgeable signature schemes (the message in the forgery has not been signed yet) into strong...
Qiong Huang, Duncan S. Wong, Yiming Zhao
PQCRYPTO
2010
250views Cryptology» more  PQCRYPTO 2010»
13 years 8 months ago
Strongly Unforgeable Signatures and Hierarchical Identity-Based Signatures from Lattices without Random Oracles
Abstract. We propose a variant of the “bonsai tree” signature scheme, a latticebased existentially unforgeable signature scheme in the standard model. Our construction offers ...
Markus Rückert
ACNS
2008
Springer
132views Cryptology» more  ACNS 2008»
13 years 10 months ago
Generic Security-Amplifying Methods of Ordinary Digital Signatures
We describe two new paradigms on how to obtain ordinary signatures that are secure against existential forgery under adaptively chosen message attacks (fully-secure, in short), fro...
Jin Li, Kwangjo Kim, Fangguo Zhang, Duncan S. Wong