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The security of TLS depends on trust in certificate authorities, and that trust stems from their ability to protect and control the use of a private signing key. The signing key is the key asset of a certificate authority (CA), and its…

Cryptography and Security · Computer Science 2017-10-11 Bargav Jayaraman , Hannah Li , David Evans

A smart contract on a blockchain cannot keep a secret because its data is replicated on all nodes in a network. To remedy this problem, it has been suggested to combine blockchains with trusted execution environments (TEEs), such as Intel…

Distributed, Parallel, and Cluster Computing · Computer Science 2018-05-23 Marcus Brandenburger , Christian Cachin , Rüdiger Kapitza , Alessandro Sorniotti

Trusted execution environment (TEE) technology has found many applications in mitigating various security risks in an efficient manner, which is attractive for critical infrastructure protection. First, the natural of critical…

Cryptography and Security · Computer Science 2023-09-14 Rabimba Karanjai , Rowan Collier , Zhimin Gao , Lin Chen , Xinxin Fan , Taeweon Suh , Weidong Shi , Lei Xu

Secure outsourced computation (SOC) provides secure computing services by taking advantage of the computation power of cloud computing and the technology of privacy computing (e.g., homomorphic encryption). Expanding computational…

Cryptography and Security · Computer Science 2024-12-03 Bowen Zhao , Jiuhui Li , Peiming Xu , Xiaoguo Li , Qingqi Pei , Yulong Shen

Security issues are the most challenging problems in cloud computing environments as an emerging technology. Regarding to this importance, an efficient and reliable user authentication and data protection model has been presented in this…

Distributed, Parallel, and Cluster Computing · Computer Science 2015-08-10 Mohammad Ahmadi , Mostafa Vali , Farez Moghaddam , Aida Hakemi , Kasra Madadipouya

The advent of distributed computing systems will offer great flexibility for application workloads, while also imposing more attention to security, where the future advent and adoption of quantum technology can introduce new security…

Networking and Internet Architecture · Computer Science 2024-05-28 Claudio Cicconetti , Dario Sabella , Pietro Noviello , Gennaro Davide Paduanelli

Trusted Execution Environments (TEEs) isolate a special space within a device memory that is not accessible to the normal world (also known as the untrusted environment), even when the device is compromised. Therefore, developers can…

Cryptography and Security · Computer Science 2026-03-06 Ruidong Han , Zhou Yang , Chengyan Ma , Ye Liu , Yuqing Niu , Siqi Ma , Debin Gao , David Lo

Integrity is critical for maintaining system security, as it ensures that only genuine software is loaded onto a machine. Although confidential virtual machines (CVMs) function within isolated environments separate from the host, it is…

Cryptography and Security · Computer Science 2024-10-25 Wenhao Wang , Linke Song , Benshan Mei , Shuang Liu , Shijun Zhao , Shoumeng Yan , XiaoFeng Wang , Dan Meng , Rui Hou

Remote mobile and embedded devices are used to deliver increasingly impactful services, such as medical rehabilitation and assistive technologies. Secure system logging is beneficial in these scenarios to aid audit and forensic…

Cryptography and Security · Computer Science 2017-12-20 Carlton Shepherd , Raja Naeem Akram , Konstantinos Markantonakis

Preventing abuse of web services by bots is an increasingly important problem, as abusive activities grow in both volume and variety. CAPTCHAs are the most common way for thwarting bot activities. However, they are often ineffective against…

Cryptography and Security · Computer Science 2020-07-22 Yoshimichi Nakatsuka , Ercan Ozturk , Andrew Paverd , Gene Tsudik

This applied research paper introduces a novel framework for integrating hardware security and blockchain functionality with grid-edge devices to establish a distributed cyber-security mechanism that verifies the provenance of messages to…

Cryptography and Security · Computer Science 2020-08-26 Shammya Shananda Saha , Christopher Gorog , Adam Moser , Anna Scaglione , Nathan G. Johnson

Trusted execution environments (TEEs) protect the integrity and confidentiality of running code and its associated data. Nevertheless, TEEs' integrity protection does not extend to the state saved on disk. Furthermore, modern cloud-native…

Cryptography and Security · Computer Science 2024-08-16 Ardhi Putra Pratama Hartono , Andrey Brito , Christof Fetzer

A Kubernetes cluster typically consists of trusted nodes, running within the confines of a physically secure datacenter. With recent advances in edge orchestration, this is no longer the case. This poses a new challenge: how can we trust a…

Cryptography and Security · Computer Science 2024-05-17 Jordi Thijsman , Merlijn Sebrechts , Filip De Turck , Bruno Volckaert

Intel(r) Software Guard Extensions (SGX) was originally released on client platforms and later extended to single socket server platforms. As developers have become familiar with the capabilities of the technology, the applicability of this…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-07-14 Simon Johnson , Raghunandan Makaram , Amy Santoni , Vinnie Scarlata

Data theft and leakage, caused by external adversaries and insiders, demonstrate the need for protecting user data. Trusted Execution Environments (TEEs) offer a promising solution by creating secure environments that protect data and code…

Cryptography and Security · Computer Science 2024-11-05 Kosei Akama , Yoshimichi Nakatsuka , Korry Luke , Masaaki Sato , Keisuke Uehara

Most contemporary mobile devices offer hardware-backed storage for cryptographic keys, user data, and other sensitive credentials. Such hardware protects credentials from extraction by an adversary who has compromised the main operating…

Cryptography and Security · Computer Science 2025-07-11 Jenny Blessing , Ross J. Anderson , Alastair R. Beresford

Trusted Execution Environments (TEEs), such as Intel Software Guard eXtensions (SGX), are considered as a promising approach to resolve security challenges in clouds. TEEs protect the confidentiality and integrity of application code and…

Cryptography and Security · Computer Science 2020-12-14 Robert Krahn , Donald Dragoti , Franz Gregor , Do Le Quoc , Valerio Schiavoni , Pascal Felber , Clenimar Souza , Andrey Brito , Christof Fetzer

Data hosted in a cloud environment can be subject to attacks from a higher privileged adversary, such as a malicious or compromised cloud provider. To provide confidentiality and integrity even in the presence of such an adversary, a number…

Cryptography and Security · Computer Science 2019-07-24 Mathias Morbitzer

With the help of a shared pool of reconfigurable computing resources, clients of the cloud-based model can keep sensitive data remotely and access the apps and services it offers on-demand without having to worry about maintaining and…

Cryptography and Security · Computer Science 2023-04-25 S. M. Udhaya Sankar , D. Selvaraj , G. K. Monica , Jeevaa Katiravan

This paper considers a federated learning system composed of a central coordinating server and multiple distributed local workers, all having access to trusted execution environments (TEEs). In order to ensure that the untrusted workers…

Cryptography and Security · Computer Science 2021-11-05 Wensheng Zhang , Trent Muhr