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ISW
1999
Springer
13 years 9 months ago
On Anonymous Electronic Cash and Crime
Anonymous electronic cash systems can be vulnerable to criminal abuse. Two approaches were suggested for solving this problem. In an escrowed cash system users are given anonymity ...
Tomas Sander, Amnon Ta-Shma
ISW
1999
Springer
13 years 9 months ago
Digital Watermarking Robust Against JPEG Compression
Digital watermarking has been considered as an important technique to protect the copyright of digital content. For a digital watermarking method to be effective, it is essential ...
Hye-Joo Lee, Ji-Hwan Park, Yuliang Zheng
ISW
1999
Springer
13 years 9 months ago
Cryptanalysis of Two Group Signature Schemes
Abstract. Group signature schemes allow a group member to anonymously sign on group’s behalf. Moreover, in case of anonymity misuse, a group authority can recover the issuer of a...
Marc Joye, Seungjoo Kim, Narn-Yih Lee
ISW
1999
Springer
13 years 9 months ago
Region-Based Watermarking for Images
There is a spate of research activities investigating digital image watermarking schemes in an effort to control the problem of illegal proliferation of creative digital data acros...
Gareth Brisbane, Reihaneh Safavi-Naini, Philip Ogu...
ISW
1999
Springer
13 years 9 months ago
Spending Programs: A Tool for Flexible Micropayments
Micropayments are electronic payments of small amount. Given their low value, the cost of the corresponding electronic transactions should also be kept low. Current micropayment sc...
Josep Domingo-Ferrer, Jordi Herrera-Joancomart&iac...