Earticle

초록

영어

E-cash enables consumers to spend e-coin anonymously in information system, but unconditional anonymity of E-cash may be misused by malicious user, therefore fair E-cash was put forward. In fair E-cash system, the anonymity of customer can be revoked when e-coins are involved in crimes, and e-coin can be traced also. However, it is challenging work that providing a practical and complete tracing E-cash scheme. After pointing out some unpractical or incomplete designs in existing schemes, we present a practical scheme with complete tracing, including trusted authority’s unconditional tracing, bank’s repeat-spending tracing and loss-coin tracing which is neglected in prior schemes. Moreover, for resolving efficiency problem of complete fair tracing, we design a nested structure of signature of knowledge in payment protocol, which has an obvious efficiency advantage comparing with conventional signature of knowledge. Then we provide proofs of all security attributes of our E-cash system, and compare our scheme with some current schemes in efficiency. Our original design of nested structure of knowledge proof will also make other applications of knowledge-controllable-leak more efficient.

목차

Abstract
 1. Introduction
 2. Preliminaries
  2.1. Cryptographic Assumptions
  2.2. Signatures of Knowledge [28]
  2.3. The Representation Problem[13]
  2.4. Number-Theoretic Foundations of Our Scheme
 3. Our e-cash Model
 4. Complete Fair Tracing e-cash
  4.1. System Setup
  4.2. Withdrawal Protocol
  4.3. Payment Protocol
  4.4. Loss Register Protocol
  4.5. Deposit and Practical Tracing Protocol
 5. Security of the Proposed Scheme
  5.1. Unforgeability of Coin
  5.2. Authenticity of Payment
  5.3. Anonymity of Customer
  5.4. Strong Exculpability of Customer
 6. Efficiency Analysis
  6.1. Storage Space of the E-cash Systems
  6.2. Computation Cost of the E-cash Systems
 7. Conclusion
 Acknowledgements
 References

키워드

저자

• Bin Lian [ School of Information Security Engineering, Shanghai Jiao Tong University, Shanghai, China, Ningbo Institute of Technology, Zhejiang University, Ningbo, China ]
• Gongliang Chen [ School of Information Security Engineering, Shanghai Jiao Tong University, Shanghai, China ]
• Jianhua Li [ School of Information Security Engineering, Shanghai Jiao Tong University, Shanghai, China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Security and Its Applications

• 간기

  격월간

• pISSN

  1738-9976

• 수록기간

  2008~2016

• 등재여부

  SCOPUS

• 십진분류

  KDC 505 DDC 605