Title :
Improved Cryptographic protocol for digital coin exchange
Author :
Ogiela, Marek R. ; Sulkowski, Piotr
Author_Institution :
Dept. of Automatics & Biomed. Eng., AGH Univ. of Sci. & Technol., Krakow, Poland
Abstract :
In this paper we describe a serious vulnerability of the well-known protocol for exchange of anonymous currency by David Chaum. The weakness of the system consists in the possibility of spending an electronic coin more than once, which can lead to the serious frauds by both the client and the seller. What is more, the system cannot determine the right number of transactions, which were made and the bank is not able to charge the real abuser.
Keywords :
bank data processing; cryptographic protocols; anonymous currency; cryptographic protocol; digital coin exchange; electronic coin; Cryptography; Databases; Digital signatures; Educational institutions; Online banking; Protocols; cryptographic algorithms; digital cash; electronic transactions; financial systems;
Conference_Titel :
Soft Computing and Intelligent Systems (SCIS), 2014 Joint 7th International Conference on and Advanced Intelligent Systems (ISIS), 15th International Symposium on
DOI :
10.1109/SCIS-ISIS.2014.7044796
