Title :
Cryptanalysis of Two Multisignature Schemes with Distinguished Signing Authorities
Author :
Yoon, Eun-Jun ; Yoo, Kee-Young
Author_Institution :
Dept. of Comput. Eng., Kyungpook Nat. Univ., Daegu
Abstract :
In 2005, Huang and Chang proposed two multisignature schemes with distinguished signing authorities. The two schemes are based on a RSA cryptosystem and a discrete logarithm with composite modulus. One scheme is suitable for sequential architecture and the other for broadcasting. However, the current paper demonstrates an attack on Huang-Chang´s two multisignature schemes in which attacker can derive a user´s secret key and forge multisignatures schemes in arbitrary messages
Keywords :
cryptography; digital signatures; cryptanalysis; cryptosystem; discrete logarithm; multisignature schemes; sequential architecture; signing authorities; Broadcasting; Cryptography; Digital signatures; Equations; Information technology; cryptanalysis; distinguished signing authorities; multisignature; signature scheme;
Conference_Titel :
Hybrid Information Technology, 2006. ICHIT '06. International Conference on
Conference_Location :
Cheju Island
Print_ISBN :
0-7695-2674-8
DOI :
10.1109/ICHIT.2006.253531
