Applications of Blockchain in Business Processes: A Comprehensive Review

Blockchain (BC), as an emerging technology, is revolutionizing Business Process Management (BPM) in multiple ways. The main adoption is to serve as a trusted infrastructure to guarantee the trust of collaborations among multiple partners in trustless environments. Especially, BC enables trust of information by using Distributed Ledger Technology (DLT). With the power of smart contracts, BC enforces the obligations of counterparties that transact in a business process (BP) by programming the contracts as transactions. This paper aims to study the state-of-the-art of BC technologies by (1) exploring its applications in BPM with the focus on how BC provides the trust of BPs in their lifecycles; (2) identifying the relations of BPM as the need and BC as the solution with the assessment towards BPM characteristics; (3) discussing the up-to-date progresses of critical BC in BPM; (4) identifying the challenges and research directions for future advancement in the domain. The main conclusions of our comprehensive review are (1) the study of adopting BC in BPM has attracted a great deal of attention that has been evidenced by a rapidly growing number of relevant articles. (2) The paradigms of BPM over Internet of Things (IoT) have been shifted from persistent to transient, from static to dynamic, and from centralized to decentralized, and new enabling technologies are highly demanded to fulfill some emerging functional requirements (FRs) at the stages of design, configuration, diagnosis, and evaluation of BPs in their lifecycles. (3) BC has been intensively studied and proven as a promising solution to assure the trustiness for both of business processes and their executions in decentralized BPM. (4) Most of the reported BC applications are at their primary stages, future research efforts are needed to meet the technical challenges involved in interoperation, determination of trusted entities, confirmation of time-sensitive execution, and support of irreversibility

Description and Experience of the Clinical Testbeds

This deliverable describes the up-to-date technical environment at three clinical testbed demonstrator sites of the 6WINIT Project, including the adapted clinical applications, project components and network transition technologies in use at these sites after 18 months of the Project. It also provides an interim description of early experiences with deployment and usage of these applications, components and technologies, and their clinical service impact

Inter-Domain Authentication for Seamless Roaming in Heterogeneous Wireless Networks

The convergence of diverse but complementary wireless access technologies and inter-operation among administrative domains have been envisioned as crucial for the next generation wireless networks that will provide support for end-user devices to seamlessly roam across domain boundaries. The integration of existing and emerging heterogeneous wireless networks to provide such seamless roaming requires the design of a handover scheme that provides uninterrupted service continuity while facilitating the establishment of authenticity of the entities involved. The existing protocols for supporting re-authentication of a mobile node during a handover across administrative domains typically involve several round trips to the home domain, and hence introduce long latencies. Furthermore, the existing methods for negotiating roaming agreements to establish inter-domain trust rely on a lengthy manual process, thus, impeding seamless roaming across multiple domains in a truly heterogeneous wireless network. In this thesis, we present a new proof-token based authentication protocol that supports quick re-authentication of a mobile node as it moves to a new foreign domain without involving communication with the home domain. The proposed proof-token based protocol can also support establishment of spontaneous roaming agreements between a pair of domains that do not already have a direct roaming agreement, thus allowing flexible business models to be supported. We describe details of the new authentication architecture, the proposed protocol, which is based on EAP-TLS and compare the proposed protocol with existing protocols

Security and privacy issues for future mobile systems

Security and privacy research topics of importance to future mobile systems are reviewed

A Strong and Efficient Certificateless Digital Signature Scheme

This paper extends the certificateless public key infrastructure model that was proposed by Hassouna et al by proposing new digital signature scheme to provide true non-repudiation, the proposed signature scheme is short and efficient, it is also has strength point that the KGC has no contribution in signature generation/verification process, therefore any compromise of the KGC does not affect the non-repudiation service of the system. Furthermore, even the KGC cannot do signature forgery by (temporary) replacing the user’s public key

Digital Recording of Real Estate Conveyances

The purpose of this article is to describe how such a revolutionary change in the recording system can take place, and to identify and discuss the major policy issues that must be resolved in order to accomplish it. This change ought to happen. Failure to update the system will result in the continued imposition of unnecessary costs and delays on those who buy, sell, or mortgage real estate in America

Not invented here: Power and politics in public key infrastructure (PKI) institutionalisation at two global organisations.

This dissertation explores the impact of power and politics in Public Key Infrastructure (PKI) institutionalisation. We argue that this process can be understood in power and politics terms because the infrastructure skews the control of organisational action in favour of dominant individuals and groups. Indeed, as our case studies show, shifting power balances is not only a desired outcome of PKI deployment, power drives institutionalisation. Therefore, despite the rational goals of improving security and reducing the total cost of ownership for IT, the PKIs in our field organisations have actually been catalysts for power and politics. Although current research focuses on external technical interoperation, we believe emphasis should be on the interaction between the at once restrictive and flexible PKI technical features, organisational structures, goals of sponsors and potential user resistance. We use the Circuits of Power (CoP) framework to explain how a PKI conditions and is conditioned by power and politics. Drawing on the concepts of infrastructure and institution, we submit that PKIs are politically explosive in pluralistic, distributed global organisations because by limiting freedom of action in favour of stability and security, they set a stage for disaffection. The result of antipathy towards the infrastructure would not be a major concern if public key cryptography, which underpins PKI, had a centralised mechanism for enforcing the user discipline it relies on to work properly. However, since this discipline is not automatic, a PKI bereft of support from existing power arrangements faces considerable institutionalisation challenges. We assess these ideas in two case studies in London and Switzerland. In London, we explain how an oil company used its institutional structures to implement PKI as part of a desktop standard covering 105,000 employees. In Zurich and London, we give a power analysis of attempts by a global financial services firm to roll out PKI to over 70,000 users. Our dissertation makes an important contribution by showing that where PKI supporters engage in a shrewdly orchestrated campaign to knit the infrastructure with the existing institutional order, it becomes an accepted part of organisational life without much ceremony. In sum, we both fill gaps in information security literature and extend knowledge on the efficacy of the Circuits of Power framework in conducting IS institutionalisation studies

多人数署名の証明可能安全性に関する研究

筑波大学 (University of Tsukuba)201

Cross - Certif icate Based Authentication Model for Multi - Domain on Active Network

摘　要:认证是保证主动网安全性的前提和基础,传统的主动网认证采用基于证书的认证方法,由于基于身份的PKI ( ID - PKI)可以避免传统公钥密码体制中使用证书带来的种种弊端,因此越来越倍受关注。多种认证技术的并存是不可避免的 事实,如何在不同类型的信任域间实现跨域认证是主动网安全研究的重要问题之一。在探讨 ID - PKI 在主动网上实施问 题的基础上,提出了一种基于交叉证书的多信任域认证模型,在不同类型的信任域间提供双向实体认证,能较好地符合主 动网认证的实际需要。Abstract :Authentication is the premise and foundation of safety on active network. Active networks t raditionally carry out authentication with Certificate - PKI ;however ,it is less efficient than ID - PKI which has been increasingly researched recently. Because of the coexis2 tence of multi - PKI ,how to implement authentication for multi - domain would become one of the most important problems on active net2 work security. Analyzes the applications of ID - PKI on active network ,and proposes a certificate - based authentication model for multi - domain ,which supports cross - domain mutual entity authentication and is very suitable for practice of authentication on active network.基金项目:福建省2004 年自然科学基金资助项目(A0410004) ;厦门 大学院士基金资助项目(0630 - E23011) ;厦门大学新世纪优秀人才 支持基金资助项目(0000 - X07116) ;广东省自然科学基金资助项 目(06029667) ;广东中山市2006 年科技计划项