General Group Oriented ID-Based Cryptosystems with Chosen Plaintext Security

10.6633/IJNS.200801.6(1).01

Chun-Xiang Xu；Jun-Hui Zhou；Guo-Zhen Xiao

Chosen plaintext security ； group oriented cryptosystems ； general access structure ； ID-based cryptography

International Journal of Network Security

6卷1期（2008 / 01 / 01）

1 - 5

英文

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 ciphertext of a message. It is constructed using bi-linear pairings. Its security is based on the intractability of the computational bilinear Diffie-Hellman problem. The scheme possesses chosen-plaintext security in the random oracle model.