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» On the security of group communication schemes
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ICISC
2004
127views Cryptology» more  ICISC 2004»
13 years 9 months ago
Identity-Based Access Control for Ad Hoc Groups
Abstract. The proliferation of group-centric computing and communication motivates the need for mechanisms to provide group access control. Group access control includes mechanisms...
Nitesh Saxena, Gene Tsudik, Jeong Hyun Yi
TRUSTBUS
2004
Springer
14 years 1 months ago
Large-Scale Pay-As-You-Watch for Unicast and Multicast Communications
This paper addresses the problem of pay-as-you-watch services over unicast and multicast communications. For each communication model, we present two solutions, non-verifiable and...
Antoni Martínez-Ballesté, Francesc S...
SCN
2010
Springer
116views Communications» more  SCN 2010»
13 years 6 months ago
Provably Secure Convertible Undeniable Signatures with Unambiguity
Abstract. This paper shows some efficient and provably-secure convertible undeniable signature schemes (with both selective conversion and all conversion), in the standard model an...
Le Trieu Phong, Kaoru Kurosawa, Wakaha Ogata
SCN
2010
Springer
187views Communications» more  SCN 2010»
13 years 6 months ago
Searching Keywords with Wildcards on Encrypted Data
Abstract. A hidden vector encryption scheme (HVE) is a derivation of identity-based encryption, where the public key is actually a vector over a certain alphabet. The decryption ke...
Saeed Sedghi, Peter van Liesdonk, Svetla Nikova, P...
COMPSEC
2004
99views more  COMPSEC 2004»
13 years 8 months ago
An improvement of nonrepudiable threshold proxy signature scheme with known signers
In a (t, n) threshold proxy signature scheme, which is a variant of the proxy signature scheme, the proxy signature key is shared among a group of n proxy signers delegated by the ...
Shiang-Feng Tzeng, Min-Shiang Hwang, Cheng-Ying Ya...