A new electronic traveler's check scheme based on one-way hash function
نویسندگان
چکیده
Recently, Liaw et al. proposed a hash based electronic traveler’s check system. They claimed that their scheme is secure. However, after analyses, we found that their scheme is vulnerable to key compromise impersonation and parallel session attack. Further, we will improve their scheme to avoid such an attack.
منابع مشابه
A NEW SECRET SHARING SCHEME ADVERSARY FUZZY STRUCTURE BASED ON AUTOMATA
In this paper,we introduce a new verifiable multi-use multi-secretsharing scheme based on automata and one-way hash function. The scheme has theadversary fuzzy structure and satisfy the following properties:1) The dealer can change the participants and the adversary fuzzy structure without refreshing any participants' real-shadow. 2) The scheme is based on the inversion of weakly invertible fin...
متن کاملDigital Coins based on Hash Chain
We propose three digital coin schemes for doing electronic transactions over the Internet. These schemes are based on one-way hash functions. The rst scheme uses an ordinary one-way single hash function chain, which forms the basis of a simple micropayment scheme. The second scheme is based on a new technique called double-locked hash chain technique which overcomes some of the drawbacks found ...
متن کاملAn Improved Hash Function Based on the Tillich-Zémor Hash Function
Using the idea behind the Tillich-Zémor hash function, we propose a new hash function. Our hash function is parallelizable and its collision resistance is implied by a hardness assumption on a mathematical problem. Also, it is secure against the known attacks. It is the most secure variant of the Tillich-Zémor hash function until now.
متن کاملA Study of Micro-payment Based on One-way Hash Chain
Electronic payment systems have gradually become an important issue nowadays because of the popularity and importance of electronic commerce on the Internet. Security and convenience related topics are the most important issues that concern people. The electronic micropayment is one of the most popular research topics on electronic commerce. Recently, many efficient micropayment schemes, based ...
متن کاملA Universally Composable Scheme for Electronic Cash
We propose a scheme for electronic cash based on symmetric primitives. The scheme is secure in the framework for universal composability assuming the existence of a symmetric CCA2-secure encryption scheme, a CMA-secure signature scheme, and a family of one-way, collision-free hash functions. In particular, the security proof is not in the random-oracle model. Due to its high efficiency, the sch...
متن کاملذخیره 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 ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- IACR Cryptology ePrint Archive
دوره 2010 شماره
صفحات -
تاریخ انتشار 2007