Identity Based Proxy Re-encryption Based on a Variant of BB1 Identity Based Encryption

Author

Ding, Yi ; Wang, Xu An

Author_Institution

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

Volume

2

fYear

2010

fDate

24-25 April 2010

Firstpage

506

Lastpage

509

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. In this paper, we pay attention to the role of P KG for proxy re-encryption in identity based setting. We find that if we allow the PKG using its master-key in the process of generating re-encryption key for proxy re-encryption in identity based setting, it is easy to construct an identity based proxy re-encryption scheme based on a variant of BBi identity based encryption (IBE), we also prove its security in the standard model.

Keywords

cryptography; BB₁ identity based encryption; decryption key; identity based proxy re-encryption; public key; Computer networks; Educational institutions; Electronic mail; Identity-based encryption; Information security; Laboratories; Law enforcement; Public key; Public key cryptography; Wireless communication; Identity based proxy re-encryption; PKG;

fLanguage

English

Publisher

ieee

Conference_Titel

Networks Security Wireless Communications and Trusted Computing (NSWCTC), 2010 Second International Conference on

Conference_Location

Wuhan, Hubei

Print_ISBN

978-0-7695-4011-5

Electronic_ISBN

978-1-4244-6598-9

Type

conf

DOI

10.1109/NSWCTC.2010.270

Filename

5480958