Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"End-to-end Encryption"”.
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Multi-party and distributed private messaging
In this thesis, I extend private messaging systems by designing multi-party private messaging models and contribute to the implementation of a distributed private messaging system. Private communication is of increasing interest yet current state-of-the- art adopted solutions are inadequate in …
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Securing End-to-End Encrypted Systems
End-to-end encryption (E2EE) is one of the most significant improvements to end-user privacy in the last decade. The core principle of E2EE is that encrypted data can be decrypted only by the client devices at each end of the communication. In particular, data protected using E2EE cannot be …
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Detecting presence Of Malicious Hub in MIMI Protocol for Cross-Platform Messaging Interoperability
… Instant Messaging Interoperability (MIMI) protocol enables interoperable group messaging across otherwise isolated services such as WhatsApp, Signal, and Telegram. It routes every Messaging Layer Security (MLS) ciphertext through a central hub that timestamps the message and broadcasts it to …
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Securing encrypted communication
Secure messaging has led to the mass adoption of strong security principles such as end-to-end encryption and perfect forward secrecy, which had previously failed to gain traction. While this marks tremendous progress in the effort to enhance the security of communication, there are still many open …
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Towards anonymous and metadata private communication at Internet scale
… more connected, privacy is becoming harder to maintain. From social media services to Internet service providers to state-sponsored mass-surveillance programs, many outlets collect sensitive information about the users and the communication between them - often without the users ever knowing …
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Backdoor encryption policies : a legal dilemma
The ubiquitous use of technology has not only led us to impart communication and personal data online, but it has influenced our way of living. Encryption, a security measure taken to protect network communications, has found itself in the spotlight due to technological developments relating to the …
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For Your Eyes Only: A Look into the Legal Feasibility of Exceptional Access to End-to-End Encrypted Messages
… of interpersonal communications. They allow us to seamlessly communicate with people across the globe. These platforms, whose infrastructure operates on the internet, secure their communications through cryptography with most of them providing end-to-end encryption. This means that no one except …
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Security and Privacy in Unified Communication Architectures with Focus on Online Real-Time Meeting Scheduling and Joining
… example, undetectability, anonymity, and genuine end-to-end encryption are not always provided by commonly used UC platforms. Digital activists unaware of the associated risks of using UC meetings to coordinate on-the-ground activities could be a target for autocratic governments. However, UC …
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Strong metadata privacy for mobile devices and applications
… Living inconspicuously in our pockets, they store our most intimate personal messages and pictures as well as sensitive corporate information and government secrets. This has already motivated widespread adoption of end-to-end encryption for mobile messaging applications, such as WhatsApp and …
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Privacy-preserving decentralised collaborative applications
… perspective because they typically have access to large amounts of user data and metadata. This centralisation of user data creates an attractive target for actors such as criminals, suppressive governments, and companies selling the data. At the same time, the popularity of mobile and web …
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Privacy and Authentication in Emerging Network Applications
… cannot address them straightforwardly due to different trust and attack models and possibly constrained resources. For example, in a centralized dynamic spectrum access (DSA) system, the spectrum resource licensees called incumbent users (IUs), have strong operational privacy requirements …
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Formal Proofs of Security for Privacy-Preserving Blockchains and other Cryptographic Protocols
Cryptography is used to protect data and communications. The basic tools are cryptographic primitives, whose security and efficiency are widely studied. But in real-life applications these primitives are not used individually, but combined inside complex protocols. The aim of this thesis is to …
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Adaptive secure network model for dynamic wireless mesh network
… for a lot of important tasks. They are used to share information between vital systems, provide us with our pin-point location, access various digital resources and to stay connected with each other. Due to its necessity and enormity, maintaining and securing such a communication medium is an …