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    ASIA unversity > 資訊學院 > 資訊工程學系 > 期刊論文 >  Item 310904400/6309

    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/6309

    Title: An Authenticated PayWord Scheme without Public Key Cryptosystems
    Authors: Wu, C. C.;Chang, C. C.;Lin, I. C.
    Keywords: Hash chain;Key agreement;Micro-payment;PayWord
    Date: 2009-09
    Issue Date: 2009-12-17 14:57:14 (UTC+8)
    Publisher: Asia University
    Abstract: Rivest and Shamir proposed a PayWord scheme in 1996 that is an efficient
    micro-payment scheme using a one-way hash chain. However, Adachi et al. thought that
    Rivest and Shamir?s PayWord scheme suffered from a vulnerability to credit abuse attack
    and bank falsification attack. Therefore, they proposed an improved version to prevent
    these attacks in 2005. Unfortunately, there are still some drawbacks. First, the efficiency
    is degraded because the improved version using a public key cryptosystem. Second, it is
    vulnerable to an unauthorized settlement attack because it does not satisfy the requirement
    of authentication. Third, they change the PayWord scheme from a postpaid to a prepaid
    payment method. It is not practical because it is good for the vendor but is not fair to
    the customer. In this paper, we propose an authenticated PayWord scheme to eliminate
    these drawbacks and enhance the performance. Our scheme does not require a public key
    cryptosystem and the customer?s rights can be assured.
    Relation: International Journal of Innovative Computing, Information and Control 5(9):2881-2891
    Appears in Collections:[資訊工程學系] 期刊論文

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