0000000000194638
AUTHOR
Markus Jakobsson
Specifying Patterns for Mobile Application Domain Using General Architectural Components
Software companies adopt patterns as a means to improve architecture and design practices. During recent years, the application of patterns has extended from general software applications to specific problem domains. In a new domain, suitable patterns fitting to the essential design problems in the new context need to be identified. In this paper, we introduce a general architectural model of mobile applications, which can be used to identify and organise essential patterns in mobile-application design process. This model is employed to construct a high-level architecture of a particular application. For each component of the architecture, the model may suggest candidate patterns that can b…
Improved Magic Ink Signatures Using Hints
We introduce two improvements to the recently proposed so called magic ink DSS signatures. A first improvement is that we reduce the overhead for tracing without noticeably increasing any other cost. The tracing cost is linear in the number of generated signatures in the original proposal; our improved version reduces this to a logarithmic cost in the common case. A second improvement is that we introduce a method for determining whether forged currency is in circulation, without affecting the privacy of honest users. Our improvements rely on our introducing a so called hint value. This is an encryption of the signature transcript received, submitted by the signature receiver. Part of the p…