[Resource Topic] 2010/418: Cryptanalysis and Improvement of A New Electronic Traveler’s Check Scheme Based on One-way Hash Function

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Title:
Cryptanalysis and Improvement of A New Electronic Traveler’s Check Scheme Based on One-way Hash Function

Authors: Jue-Sam Chou, Hsien-ching Chen, Chun-Yun Chen

Abstract:

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.

ePrint: https://eprint.iacr.org/2010/418

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