A practical protocol for large group oriented networks
EUROCRYPT '89 Proceedings of the workshop on the theory and application of cryptographic techniques on Advances in cryptology
A protocol to set up shared secret schemes without the assistance of mutually trusted party
EUROCRYPT '90 Proceedings of the workshop on the theory and application of cryptographic techniques on Advances in cryptology
Cryptosystem for group oriented cryptography
EUROCRYPT '90 Proceedings of the workshop on the theory and application of cryptographic techniques on Advances in cryptology
Society and Group Oriented Cryptography: A New Concept
CRYPTO '87 A Conference on the Theory and Applications of Cryptographic Techniques on Advances in Cryptology
Efficient remote user authentication scheme based on generalized ElGamal signature scheme
IEEE Transactions on Consumer Electronics
Research note: New generalized group-oriented cryptosystem based on Diffie-Hellman scheme
Computer Communications
A Convertible Multi-Authenticated Encryption scheme for group communications
Information Sciences: an International Journal
An ID-based group-oriented decryption scheme secure against adaptive chosen-ciphertext attacks
Computer Communications
Formal Correctness Proof for DPLL Procedure
Informatica
Provably convertible multi-authenticated encryption scheme for generalized group communications
Information Sciences: an International Journal
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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 are not properly predetermined in Yang et al.'s GGOC, an unauthorized decryption set of users can recover the encrypted message without difficulty. This study also presents an improved protocol to resist such an attack.