@inproceedings{ca9e61a3ec344effb715b79945a4f6cb,
title = "Transformation-free proxy cryptosystems and their applications to electronic commerce",
abstract = "In this paper transformation-free proxy cryptosystems (TFP systems) are studied. The TFP system is a modification of the proxy cryptosystem introduced by Mambo and Okamoto [6] in which a ciphertext transformation by the original decryptor is necessary. The TFP system allows proxy decryptor to do decryption without any ciphertext transformation, so that it can release the original decryptor more efficiently from a large amount of decrypting operations. An active identity-based and a directory-based TFP systems based on pairings are proposed. Furthermore, two applications of directory-based TFP system in electronic commerce are also investigated.",
keywords = "Pairing, Partial decryption-verification, Partial delegation, Proxy cryptosystem, Transformation-free",
author = "Lihua Wang and Zhenfu Cao and Eiji Okamoto and Ying Miao and Takeshi Okamoto",
year = "2004",
doi = "10.1145/1046290.1046310",
language = "英语",
isbn = "1581139551",
series = "ACM International Conference Proceeding Series",
pages = "92--98",
booktitle = "Proceedings of the 3rd International Conference on Information Security, InfoSecu '04",
note = "3rd International Conference on Information Security, InfoSecu '04 ; Conference date: 14-11-2004 Through 16-11-2004",
}