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The aim of the paper is to provide a solution which increases the security of a mobile environment for both individuals and for workers in an enterprise. The proposed solution adapts Shamir's approach for sharing a secret for encryption key…

Cryptography and Security · Computer Science 2016-09-23 Jānis Buls , Imants Gorbans , Ivans Kulesovs , Uldis Straujums

Trusted Platform Modules are valuable building blocks for security solutions and have also been recognized as beneficial for security on mobile platforms, like smartphones and tablets. However, strict space, cost, and power constraints of…

Cryptography and Security · Computer Science 2019-05-21 Dhiman Chakraborty , Lucjan Hanzlik , Sven Bugiel

In Europe and North America, the most widely used stream cipher to ensure privacy and confidentiality of conversations in GSM mobile phones is the A5/1. In this paper, we present a new attack on the A5/1 stream cipher with an average time…

Cryptography and Security · Computer Science 2012-05-04 Jay Shah , Ayan Mahalanobis

Reinforcement learning (RL) based post-training for explicit chain-of-thought (e.g., GRPO) improves the reasoning ability of multimodal large-scale reasoning models (MLRMs). But recent evidence shows that it can simultaneously degrade…

Computation and Language · Computer Science 2026-02-12 Soumya Suvra Ghosal , Souradip Chakraborty , Vaibhav Singh , Furong Huang , Dinesh Manocha , Amrit Singh Bedi

With the increasing importance of data in the modern business environment, effective data man-agement and protection strategies are gaining increasing research attention. Data protection in a cloud environment is crucial for safeguarding…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-02-06 Ji-Beom Kim , Je-Bum Choi , Eun-Sung Jung

The GSM network with the greatest worldwide number of users, succumbs to several security vulnerabilities. The short message service (SMS) is one of its superior and well-tried services with a global availability in the GSM networks. The…

Cryptography and Security · Computer Science 2012-03-20 M. Toorani , A. A. Beheshti

In this paper, we present the actual risks of stealing user PINs by using mobile sensors versus the perceived risks by users. First, we propose PINlogger.js which is a JavaScript-based side channel attack revealing user PINs on an Android…

Cryptography and Security · Computer Science 2017-04-19 Maryam Mehrnezhad , Ehsan Toreini , Siamak F. Shahandashti , Feng Hao

In this paper, a new image encryption scheme using a secret key of 144-bits is proposed. In the substitution process of the scheme, image is divided into blocks and subsequently into color components. Each color component is modified by…

Cryptography and Security · Computer Science 2012-04-10 Narendra K Pareek

Recent research has sought to accelerate cryptographic hash functions as they are at the core of modern cryptography. Traditional designs, however, suffer from the von Neumann bottleneck that originates from the separation of processing and…

Hardware Architecture · Computer Science 2022-06-03 Batel Oved , Orian Leitersdorf , Ronny Ronen , Shahar Kvatinsky

An improved design of a cryptosystem based on small Ree groups is proposed. We have changed the encryption algorithm and propose to use a logarithmic signature for the entire Ree group. This approach improves security against sequential key…

Cryptography and Security · Computer Science 2025-04-28 Gennady Khalimov , Yevgen Kotukh

This paper is about describing the features of a software that was developed for its user safety which we called SecureIT is a android based soft ware using Android SDK along with Firebase and Google map SDK along with Node.Js. The aim of…

Human-Computer Interaction · Computer Science 2020-04-14 Shanta Khatun , Fahim Hossain Saiki , Milon Biswas

Long coherence times and fast gate operations are desirable but often conflicting requirements for physical qubits. This conflict can be resolved by resorting to fast qubits for operations, and by storing their state in a `quantum memory'…

Kintsugi is a protocol for key recovery, allowing a user to regain access to end-to-end encrypted data after they have lost their device, but still have their (potentially low-entropy) password. Existing E2EE key recovery methods, such as…

Cryptography and Security · Computer Science 2025-07-30 Emilie Ma , Martin Kleppmann

The security of blockchain protocols is a combination of two properties: safety and liveness. It is well known that no blockchain protocol can provide both to sleepy (intermittently online) clients under adversarial majority. However,…

Cryptography and Security · Computer Science 2023-11-07 Srivatsan Sridhar , Dionysis Zindros , David Tse

Industrial Control Systems (ICS) are sensible targets for high profile attackers and advanced persistent threats, which are known to exploit USB thumb drives as an effective spreading vector. In ICSes, thumb drives are widely used to…

Cryptography and Security · Computer Science 2019-03-19 Federico Griscioli , Maurizio Pizzonia

This work shows how a secure Internet for users A and B can be implemented through a fast key distribution system that uses physical noise to encrypt information transmitted in deterministic form. Starting from a shared secret random…

Quantum Physics · Physics 2007-05-23 Geraldo A. Barbosa

Software-based approaches for search over encrypted data are still either challenged by lack of proper, low-leakage encryption or slow performance. Existing hardware-based approaches do not scale well due to hardware limitations and…

Cryptography and Security · Computer Science 2017-03-16 Benny Fuhry , Raad Bahmani , Ferdinand Brasser , Florian Hahn , Florian Kerschbaum , Ahmad-Reza Sadeghi

WebAssembly (Wasm) is a next-generation portable compilation target for deploying applications written in high-level languages on the web. In order to protect their memory from untrusted code, web browser engines confine the execution of…

Programming Languages · Computer Science 2019-10-23 Marco Vassena , Marco Patrignani

The bounded quantum storage model aims to achieve security against computationally unbounded adversaries that are restricted only with respect to their quantum memories. In this work, we provide information-theoretic secure constructions in…

Cryptography and Security · Computer Science 2025-06-05 Mohammed Barhoush , Louis Salvail

Caching aims to store data locally in some nodes within the network to be able to retrieve the contents in shorter time periods. However, caching in the network did not always consider secure storage (due to the compromise between time…

Information Theory · Computer Science 2017-09-04 Mohsen Karimzadeh Kiskani , Hamid Sadjadpour