Title :
A Formulation for Ideal Signature Functionality and Its Realization
Author :
Zhang, Haojun ; Wang, Huibin ; Chen, Li
Author_Institution :
Haojun Zhang Henan Univ. of Technol., Zhengzhou
Abstract :
Universal composition framework, UC, provides a methodology for designing and analyzing protocols. A secure protocol/task can be formulated to an ideal functionality, translate some realistic schemes into an ideal protocol so that it can securely emulate the ideal functionality. UC theory ensures the security of protocols is maintained under a general protocol composition operation. Signature is a primary cryptographic task. The present formulation of ideal signature functionality is introduced and some flaws are pointed out, and then an improved signature functionality is presented and proven that it is securely realized by precisely those signature scheme that is equivalent to existential unforgery against chosen- message attacks, EU-CMA.
Keywords :
cryptographic protocols; digital signatures; ideal signature functionality; primary cryptographic task; protocol composition operation; secure protocol-task; universal composition framework; Acoustical engineering; Algorithms; Computational intelligence; Cryptographic protocols; Cryptography; Design methodology; Digital signatures; Forgery; Information security; Research and development;
Conference_Titel :
Computational Intelligence and Security Workshops, 2007. CISW 2007. International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-0-7695-3073-4
DOI :
10.1109/CISW.2007.4425557
