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73
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INFORMATICALT
2007
81views more  INFORMATICALT 2007»
15 years 1 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
123
Voted
ASIACRYPT
2010
Springer
14 years 11 months ago
Leakage Resilient ElGamal Encryption
Blinding is a popular and well-known countermeasure to protect public-key cryptosystems against side-channel attacks. The high level idea is to randomize an exponentiation in order...
Eike Kiltz, Krzysztof Pietrzak
100
Voted
INFORMATICALT
2010
102views more  INFORMATICALT 2010»
14 years 10 months ago
An Computation-Efficient Generalized Group-Oriented Cryptosystem
A Group-Oriented Cryptosystem (GOC) allows a sender to encrypt a message sent to a group of users so only the specified sets of users in that group can cooperatively decrypt the me...
Ting-Yi Chang
113
Voted
ASIACRYPT
2004
Springer
15 years 6 months ago
Practical Two-Party Computation Based on the Conditional Gate
Abstract. We present new results in the framework of secure multiparty computation based on homomorphic threshold cryptosystems. We introduce the conditional gate as a special type...
Berry Schoenmakers, Pim Tuyls
89
Voted
IJNSEC
2008
103views more  IJNSEC 2008»
15 years 1 months ago
General Group Oriented ID-based Cryptosystems with Chosen Plaintext Security
A scheme for general group oriented ID-based cryptosystems is proposed. This scheme allows an authorized subset in the general access structure to cooperatively decrypt the cipher...
Chunxiang Xu, Junhui Zhou, Guozhen Xiao