This paper presents a scheme for the design, analysis and comparison of electronic payment systems. Three systems are described in detail through this scheme. Keywords: payment systems, analysis and design of payment systems.
This paper describes two architectures for building Pay-per-Run software systems. These are systems that allow the user to pay for each execution of an application, instead of buying a more expensive user license. This is a new model for software distribution, in which developers charge small fees for each execution in order to increase their user market.… (More)
We present a new cryptographic primitive, the <i>blinded-key signature,</i> which allows the inclusion of private keys in autonomous mobile agents. This novel approach can be applied to many well-known digital signature schemes, such as RSA and ElGammal.
Vertical jump performance is often assessed using jump-and-reach tests. The exact procedure used for determining standing reach height and jump height has a large effect on the resultant displacement. The purpose of this investigation was to determine the influence of 4 methods of standing reach height measurement and Vertec jump height measurement against… (More)