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EUROCRYPT
2009
Springer
14 years 10 months ago
Asymmetric Group Key Agreement
A group key agreement (GKA) protocol allows a set of users to establish a common secret via open networks. Observing that a major goal of GKAs for most applications is to establish...
Qianhong Wu, Yi Mu, Willy Susilo, Bo Qin, Josep Do...
IJNSEC
2010
120views more  IJNSEC 2010»
13 years 4 months ago
Secure Group Key Management Scheme for Multicast Networks
This paper proposes a scheme to provide security to dynamic multicast VoIP systems efficiently. Security is usually provided by encrypting the media packets sent from a user to ot...
R. Srinivasan, V. Vaidehi, R. Rajaraman, S. Kanaga...
CRYPTO
1992
Springer
156views Cryptology» more  CRYPTO 1992»
14 years 1 months ago
DES is not a Group
We prove that the set of DES permutations (encryption and decryption for each DES key) is not closed under functional composition. This implies that, in general, multiple DES-encry...
Keith W. Campbell, Michael J. Wiener
INFORMATICALT
2007
81views more  INFORMATICALT 2007»
13 years 9 months ago
Security Flaw in Simple Generalized Group-Oriented Cryptosystem Using ElGamal Cryptosystem
A generalized group-oriented cryptosystem (GGOC) based on ElGamal cryptosystem was proposed by Yang et al. in 2003. This study shows that if the authorized decryption sets of users...
Chuan-Ming Li, Tzonelih Hwang, Narn-Yih Lee
ASIACRYPT
2001
Springer
14 years 2 months ago
Unbelievable Security. Matching AES Security Using Public Key Systems
The Advanced Encryption Standard (AES) provides three levels of security: 128, 192, and 256 bits. Given a desired level of security for the AES, this paper discusses matching publi...
Arjen K. Lenstra