Implementing regular cash with blind fixed-value electronic coins

نویسندگان

  • Dimitrios Lekkas
  • Diomidis Spinellis
چکیده

We propose a generic framework for the development of an off-line peer-to-peer electronic payment system with fixed-value electronic coins. The proposed scheme simulates the issuance, circulation and characteristics of conventional cash and satisfies important security, privacy and usability requirements, offering a comparative advantage over other existing solutions. We exploit the strong security characteristics of a typical tamperproof device such as a smart card, and the trust services provided by a Public Key Infrastructure. The electronic coins are fixed, signed data structures that may be distributed, stored and processed by external applications only in their blind (encrypted) form. Non-divisibility is counterbalanced by the low complexity of the proposed solution, which enables the efficient exchange of multiple coins per transaction.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Recent Advances in Electronic Cash Design

Electronic cash (or e-cash) is an electronic payment solution that is usually viewed as an attempt to emulate electronically the main characteristics of regular cash. In particular, e-cash and other payment solutions should protect the privacy of users during a purchase. The main distinction of e-cash with respect to other electronic payment systems is that electronic coins are stored on a devi...

متن کامل

Designing Secure Electronic Cash Payment Systems Based on Efficient Partially Blind Signature Scheme

In this paper we have designed a partially blind signature scheme for the blinded e-cash based payment system using ECC-based self-certified public key cryptosystems. Using partially blind signatures to design the e-cash scheme can avoid the unlimited growth of the bank’s database which keeps all spent e-cashes for preventing double spending, and also let the signer assure himself that the mess...

متن کامل

Detachable Electronic Coins

We propose a non-divisible electronic cash system that combines the restrictive blind signature technique and a batch signature scheme based upon the binary tree structure. Contemporary electronic cash solutions rely on the divisibility paradigm to achieve significant computational savings, and such techniques are considered to be the most efficient. We demonstrate an alternative approach that ...

متن کامل

Towards Provably Secure Eecient Electronic Cash (extended Abstract)

An \electronic coin scheme" as deened by Chaum, Fiat, and Naor 5] is a collection of protocols to achieve untraceable, unforgeable coins with ooine purchasing; this is the minimum set of properties to make electronic money useful. We give a new electronic coin scheme that is simple and practical. Withdrawal requires only two rounds of interaction, while purchase and deposit are non-interactive;...

متن کامل

A new untraceable off-line electronic cash system

Digital content transactions through e-commerce will grow tremendously in the coming years. In this respect, well-designed electronic payment schemes and high-quality digital contents are two critical factors. Untraceable electronic cash schemes make it possible for customers to pay the e-cash to the merchants through communication networks under privacy protection. Therefore, there is a need t...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Computer Standards & Interfaces

دوره 29  شماره 

صفحات  -

تاریخ انتشار 2007