Bit coin has emerged as the most successful cryptographic currency in history. Within two
years of its quiet launch in 2009, Bit coin grew to comprise billions of dollars of economic …

The objective of this article is to provide an overview of physical ability, fitness and police
work. The literature will be reviewed, and the method we have used to develop a tool that …

The covering of native soils with impervious surfaces (eg roofs, roads, and pavement)
prevents infiltration of rainfall into the ground, resulting in increased surface runoff and …

An authoritative introduction to the exciting new technologies of digital money Bitcoin and
Cryptocurrency Technologies provides a comprehensive introduction to the revolutionary yet …

We evaluate two decades of proposals to replace text passwords for general-purpose user
authentication on the web using a broad set of twenty-five usability, deployability and …

We propose Mixcoin, a protocol to facilitate anonymous payments in Bitcoin and similar
cryptocurrencies. We build on the emergent phenomenon of currency mixes, adding an …

We report on the largest corpus of user-chosen passwords ever studied, consisting of
anonymized password histograms representing almost 70 million Yahoo! users, mitigating …

Today's Internet services rely heavily on text-based passwords for user authentication. The
pervasiveness of these services coupled with the difficulty of remembering large numbers of …

We study the problem of building a verifiable delay function (VDF). A VDF VDF requires a
specified number of sequential steps to evaluate, yet produces a unique output that can be …

This paper describes several novel timing attacks against the common table-driven software
implementation of the AES cipher. We define a general attack strategy using a simplified …