Title :
Improvement of an Identity-Based Multisignature Scheme
Author_Institution :
Sch. of Electr. & Electron. Eng., North China Electr. Power Univ., Beijing, China
Abstract :
In this paper the security of a multisignature scheme proposed by Harari was analyzed, and an attack method was constructed. An Attacker can successfully steal the signing key of a random signer through such method, and then forge a valid multisignature. The improvement of the original scheme was then proposed. It can be proved that the improved scheme can resist that kind of attack efficiently; the signature efficiency is also promoted at the same time.
Keywords :
digital signatures; public key cryptography; RSA; attack method; cryptographic algorithm; identity-based multisignature scheme; multisignature scheme security; random signer; signature efficiency; signing key; valid multisignature; Algorithm design and analysis; Computational complexity; Public key; Resists; RSA cryptographic algorithm; common modulus attack; cryptanalysis; multisignature;
Conference_Titel :
Computational and Information Sciences (ICCIS), 2012 Fourth International Conference on
Conference_Location :
Chongqing
Print_ISBN :
978-1-4673-2406-9
DOI :
10.1109/ICCIS.2012.173
