Sử dụng mạng máy tính phân tán trong xây dựng giải pháp thám mã khối

Tóm tắt—Bài báo trình bày một giải pháp sử dụng năng lực của mạng máy tính phân tán cho thám mã khối. Hệ thống có cấu trúc dựa trên 3 phần mềm. Phần mềm quản trị sử dụng cho nhập dữ liệu đầu vào, phân tích và chia khoảng không gian khóa và phân tích kết quả. Phần mềm thám mã trên CPU và GPU được cài đặt tương ứng cho các máy tính trong mạng phân tán có nhiệm vụ thám mã đối với dữ liệu phần mềm quản trị cung cấp. Kết quả được gửi về phần mềm quản trị để phân tích và giải mã. Quá trình thám mã được thực hiện cùng lúc trên toàn bộ máy tính trong mạng vào thời gian máy tính nhàn rỗi, không ảnh hưởng tới hoạt động hàng ngày của người dùng. Hệ thống bao gồm cả các máy tính có sử card GPU giúp tăng hiệu suất thám mã lên gấp 11 lần. Giải pháp đã được ứng dụng trong thám mật khẩu Windows qua mã băm LAN Manager. Abstract—This paper presents a method to use the capabilities of distributed computer networks in cryptanalysis of block ciphers. The system is structured based on 3 software. Management software for input data entry, analysis, and keyspace division. Cryptanalysis software on CPU and GPU is installed respectively for client computers in the distributed network is responsible for cryptanalysis of data provided by the management software. The results are sent to the administrative software for analysis and decoding. The encryption process is performed on all computers in the network at the same time in their spare time, without affecting the user's daily activities. The system includes GPU computers that increase the performance of the cryptanalysis by 11 times. This solution has been applied in Windows password detection via LAN Manager hash code.

System Management Software for Emergency Call

Present the experience of the development of a system as an effective communication strategy between the user/requester and the mobile prehospital care service. Approach: It is a methodological study, fragmented into five stages, developed by health and technology professionals and students. Result: The five stages were followed to reach the final product. Conclusion: The app is groundbreaking and contributes to the safe and efficient communication with healthcare professionals and users.

PRISM 2.0: Technical Challenges

PRISM 2.0 was designed to run on Android tablets and made use of both customized apps that relied on Google’s browser and e-mail functionality as well as commercial apps, such as Microsoft’s Skype for videoconferencing. We also made use of functionality provided by our partner AT&T, such as their sim cards to provide cell-based internet connectivity to participants who did not have access to Wi-Fi internet services to their home (cable, DSL), as well as tablet management software to deploy updates. The Miami site provided central management and tablet deployment and redeployment services and support as well as coordinating locally provided tech support at the three sites. We discuss some of the technical challenges associated with these arrangements. We focus on how changes to the operating system broke some of our apps necessitating substitution of other apps and provision of new training, and how Covid-19 affected technical support.

Emilia-Romagna Regional Blood System accreditation as an example of improvement through application of specific requirements: a retrospective analysis

BackgroundInstitutional accreditation in Italy represents the license given by a region to a public or private facility to provide services in the name and on behalf of the National Health Service. This study aims to evaluate the improvement of the Emilia-Romagna Regional Blood System and to highlight its unresolved issues, analysing non-conformities observed during accreditation and maintenance inspections between 2013 and 2018.MethodsAll the Emilia-Romagna Regional Blood facilities were invited to participate in this study voluntarily and anonymously. Participants had to access a web application that we developed specifically. For each of the three inspections evaluated in this study, they had to enter data about the state of their organisation branches and non-conformities observed by regional inspectors. All data entered were finally exported from the web application database and analysed with spreadsheets. Statistical analysis was performed using Wilcoxon signed-rank test with continuity correction.Results17 structures took part in the study, with a total of 174 organisation branches. The number of branches changed over the years because of new openings and closures due to reorganisations or non-conformities that were too difficult to correct. Inspectors observed 2381 non-conformities (291 structural, 611 technological and 1479 organisational). As a result of accreditation inspections and consequent improvement actions, non-conformities were reduced by 88%. The most frequent non-conformities concerned the management software and the transportation of blood and blood components.ConclusionAn improvement in the Emilia-Romagna Regional Blood System over time is evident: institutional accreditation certainly pushed it to change and overcome its problems to comply with specific requirements. The remaining non-conformities after the three inspections were mostly organisational and management software was the most critical issue. Despite these non-conformities, all currently active structures are accredited and guarantee high standards of quality and safety of products and services.