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PQCRYPTO
2010
250views Cryptology» more  PQCRYPTO 2010»
14 years 23 days 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
IJACT
2008
102views more  IJACT 2008»
13 years 8 months ago
An optimistic fair exchange protocol and its security in the universal composability framework
: Fair exchange protocols allow both or neither of two parties to obtain the other's items, and this property is essential in e-commerce. In this paper, we construct an optimi...
Yusuke Okada, Yoshifumi Manabe, Tatsuaki Okamoto
NDSS
1998
IEEE
14 years 1 months ago
Efficient Protocols for Signing Routing Messages
In this work, we aim to reduce the computational costs of using public-key digital signatures in securing routing protocols. Two protocols (COSP and IOSP) using one-time digitalsi...
Kan Zhang
SIGOPS
1998
123views more  SIGOPS 1998»
13 years 8 months ago
A New Family of Authentication Protocols
Abstract. We present a related family of authentication and digital signature protocols based on symmetric cryptographic primitives which perform substantially better than previous...
Ross J. Anderson, Francesco Bergadano, Bruno Crisp...
ETRICS
2006
14 years 14 days ago
Visual Document Authentication Using Human-Recognizable Watermarks
Digital signatures and message authentication codes are well known methods for ensuring message integrity. However, they rely on computations which are too hard to be performed by ...
Igor Fischer, Thorsten Herfet