15 search results - page 1 / 3 » Security Flaw in Simple Generalized Group-Oriented Cryptosys... |
INFORMATICALT
2007
13 years 4 months ago
2007
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...
ASIACRYPT
2010
Springer
13 years 3 months ago
2010
Springer
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...
INFORMATICALT
2010
13 years 2 months ago
2010
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...
ASIACRYPT
2004
Springer
13 years 10 months ago
2004
Springer
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...
IJNSEC
2008
13 years 4 months ago
2008
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...