Further Remarks on Identity-Based RSA Multi-signature

Author

Chang, Ya-Fen ; Lai, Yen-Cheng ; Chen, Mu-Yen

Author_Institution

Dept. of Comput. Sci. & Inf. Eng., Nat. Taichung Inst. of Technol., Taichung, Taiwan

fYear

2009

fDate

12-14 Sept. 2009

Firstpage

750

Lastpage

753

Abstract

RSA is a popular public key cryptology for encryption and signing messages. In 2008, Harn and Ren introduced a new identity-based RSA multi-signature scheme by adopting Shamir´s signature scheme. But, we find that there are some flaws in their proposal: First, the original signer´s signing secret key can be derived. Second, the verification equation will never hold even if the received signature and message are legal. Third, transmission environments are not taken into consideration. This manuscript will thoroughly make discussions on Harn and Ren´s scheme by showing the mentioned flaws.

Keywords

digital signatures; public key cryptography; Shamir signature scheme; identity-based RSA multi-signature scheme; original signer signing secret key; public key cryptology; Computer science; Digital signatures; Electronic mail; Identity-based encryption; Information management; Information technology; Public key; Public key cryptography; Security; Signal processing; RSA; digital signature; identity-based signature (IBS); multi- signature; public key cryptography;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Information Hiding and Multimedia Signal Processing, 2009. IIH-MSP '09. Fifth International Conference on

Conference_Location

Kyoto

Print_ISBN

978-1-4244-4717-6

Electronic_ISBN

978-0-7695-3762-7

Type

conf

DOI

10.1109/IIH-MSP.2009.137

Filename

5337259