Securing Drug Distribution Systems from Tampering Using Blockchain

Securing Circuits against Constant-Rate Tampering

We present a compiler that converts any circuit into one that remains secure even if a constant fraction of its wires are tampered with. Following the seminal work of Ishai et al. (Eurocrypt 2006), we consider adversaries who may choose an arbitrary set of wires to corrupt, and may set each such wire to 0 or to 1, or may toggle with the wire. We prove that such adversaries, who continuously tam...

Securing Proof-of-Stake Blockchain Protocols

Proof-of-Stake (PoS) protocols have been actively researched for the past five years. PoS finds direct applicability in open blockchain platforms and has been seen as a strong candidate to replace the largely inefficient Proof of Work mechanism that is currently plugged in most existing open blockchains. Although a number of PoS variants have been proposed, these protocols suffer from a number ...

Securing Circuits and Protocols against 1/poly(k) Tampering Rate

In this work we present an efficient compiler that converts any circuitC into one that is resilient to tampering with 1/ poly(k) fraction of the wires, where k is a security parameter independent of the size of the original circuit |C|. Our tampering model is similar to the one proposed by Ishai et al. (Eurocrypt, 2006) where a tampering adversary may tamper with any wire in the circuit (as lon...

Securing Cloud Computing from Different Attacks Using Intrusion Detection Systems

Securing Video Integrity Using Decentralized Trusted Timestamping on the Bitcoin Blockchain

The ability to verify the integrity of video files is important for consumer and business applications alike. Especially if video files are to be used as evidence in court, the ability to prove that a file existed in a certain state at a specific time and was not altered since is crucial. This paper proposes the use of blockchain technology to secure and verify the integrity of video files. To ...