A practical approach defeating blackmailing

Dong Guk Han, Hye Young Park, Young Ho Park, Sangjin Lee, Dong Hoon Lee, Hyung Jin Yang

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    To simulate the functionalities of the real cash, one of the important requirements of electronic cash systems is the anonymity of users. Unconditional anonymity, however, is also very well suited to support criminals in blackmailing. Recently Kügler and Vogt [6] proposed a payment system based on the blind undeniable signature that protects the privacy of the users and defeats blackmailing with the assumption that the victim of a blackmailing can inform the Bank of a blackmailing before delivering the money and transfer the decryption key(i.e. the secret key of the victim) used in confirmation protocol without being detected by a blackmailer. But the assumption that the victim is always able to inform the bank of blackmailing is very impractical in such cases as kidnapping and special impersonation. In this paper, we propose two practical methods that gives the Bank the information about blackmailing and decryption key without any unpractical assumptions.

    Original languageEnglish
    Title of host publicationInformation Security and Privacy - 7th Australasian Conference, ACISP 2002, Proceedings
    EditorsLynn Batten, Jennifer Seberry
    PublisherSpringer Verlag
    Pages464-481
    Number of pages18
    ISBN (Print)3540438610, 9783540438618
    DOIs
    Publication statusPublished - 2002
    Event7th Australasian Conference on Information Security and Privacy, ACISP 2002 - Melbourne, Australia
    Duration: 2002 Jul 32002 Jul 5

    Publication series

    NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
    Volume2384
    ISSN (Print)0302-9743
    ISSN (Electronic)1611-3349

    Other

    Other7th Australasian Conference on Information Security and Privacy, ACISP 2002
    Country/TerritoryAustralia
    CityMelbourne
    Period02/7/302/7/5

    Bibliographical note

    Publisher Copyright:
    © Springer-Verlag Berlin Heidelberg 2002.

    ASJC Scopus subject areas

    • Theoretical Computer Science
    • General Computer Science

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