Proxy Re-encryption Scheme from IBE to CBE

Author

Xuan Wang ; Yang, Xiaoyuan ; Zhang, Minqing

Author_Institution

Key Lab. of Inf. & Network Security, Eng. Coll. of Chinese Armed Police Force, China

fYear

2009

fDate

25-26 April 2009

Firstpage

99

Lastpage

102

Abstract

In 1998, Blaze, Bleumer, and Strauss proposed a kind of cryptographic primitive called proxy re-encryption. In proxy re-encryption, a proxy can transform a ciphertext computed under Alice´s public key into one that can be opened under Bob´s decryption key. They predicated that proxy re-encryption and re-signature will play an important role in our life. In 2007, Matsuo proposed the concept of four types of re-encryption schemes: CBE to IBE(type 1), IBE to IBE(type 2), IBE to CBE (type 3), CBE toCBE (type 4 ). Now CBE to IBE and IBE to IBE proxy re-encryption schemes are being standardized by IEEEP1363.3 working group. In this paper, based on we propose a proxy re-encryption scheme from IBE to CBE. To the best of our knowledge, this is the first type 3 scheme. We give the security model for proxy re-encryption scheme from IBE to CBE and prove our scheme´s security in this model without random oracle.

Keywords

public key cryptography; Alice public key; Bob decryption key; CBE; IBE; IEEEP1363.3 working group; ciphertext; cryptographic primitive; proxy re-encryption scheme; proxy resignature; Data security; Databases; Educational institutions; Identity-based encryption; Information security; Laboratories; Public key; Public key cryptography; Standards Working Groups; proxy re-encryption;

fLanguage

English

Publisher

ieee

Conference_Titel

Database Technology and Applications, 2009 First International Workshop on

Conference_Location

Wuhan, Hubei

Print_ISBN

978-0-7695-3604-0

Type

conf

DOI

10.1109/DBTA.2009.47

Filename

5207804