Secure and Eecient Oo-line Digital Money
نویسندگان
چکیده
An electronic (or \digital") coin scheme is a set of cryptographic protocols for withdrawal (by a customer from the bank), purchase (by a customer to a vendor), and deposit (by a vendor to the bank), such that the security needs of all participants are satissed { money is unforgeable, unreusable, and untraceable. A coin scheme is \oo-line" if the purchase protocol does not involve the bank. In this work, we present new techniques for oo-line coin schemes which are secure and eecient. (An earlier version of this work appeared in 16].)
منابع مشابه
\indirect Discourse Proofs": Achieving Eecient Fair Oo-line E-cash
Cryptography has been instrumental in reducing the involvement of overhead third parties in protocols. For example; a digital signature scheme assures a recipient that a judge who is not present at message transmission will nevertheless approve the validity of the signature. Similarly, in oo-line electronic cash the bank (which is oo-line during a purchase) is assured that if a user double spen...
متن کاملOne - Response O - Line Digital
Current oo-line electronic cash systems are often too complex to implement. In this paper, we propose an eecient oo-line digital cash payment system that still maintains basic security features such as double-spending detection and client anonymity. Using a one-way hash function chain, our method veriies the clients to perform one single online computation (response) for the whole payment.
متن کاملFair Oo-line E-cash Made Easy
The major considerations in designing a secure system are (1) simplicity of the algorithms involved, (2) eeciency of the implementation, and (3) provable security; these attributes contribute to the \elegance" of a system, easing its implementation (and limiting the possibility of errors) and the burden on system resources. Anonymous oo-line electronic cash (e-cash) systems provide transactions...
متن کاملOo-line Reasoning for On-line Eeciency: Knowledge Bases
The complexity of reasoning is a fundamental issue in AI. In many cases, the fact that an intelligent system needs to perform reasoning on-line contributes to the diiculty of this reasoning. This paper considers the case in which an intelligent system computes whether a query is entailed by the system's knowledge base. It investigates how an initial phase of oo-line preprocessing and design can...
متن کاملOo-line Electronic Cash Based on Secret-key Certiicates
An oo-line electronic coin system is presented that ooers multi-party security and unconditional privacy of payments. The system improves signiicantly on the eeciency of the previously most eecient such system known in the literature, due to application of a recently proposed technique called secret-key certiicates. By deenition of secret-key certiicates, pairs consisting of a public key and a ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1993