Author: Sarah Bordage

Outlooks

Rollups: a Powerful Scaling Mechanism

One of the major challenges in the world of blockchains is that of scaling up, particularly in terms of throughput, i.e. the number of transactions per second. One way to increase throughput is to use a block validation system other than the one based on proof of work…

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outlook Zero-knowledge Trust and Privacy on a industrial scale - Blockchain@X
Outlooks

Zero-knowledge: Trust and Privacy on an Industrial Scale

One of the main obstacles to the deployment of blockchains is the fact that the data managed on a blockchain is publicly accessible. This is unthinkable in the health or banking sectors, for example. Zero-knowledge technologies can resolve precisely this contradiction. These technologies can be implemented either by deploying a blockchain specifically designed to integrate zero-knowledge…

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Publication On the Privacy of a Code‐Based Single Server Computional Pir Scheme | Blockchain@X
Publications

On the Privacy of a Code-based Single-server Computational Pir Scheme

We show that the single-server computational PIR protocol proposed by Holzbaur, Hol- lanti and Wachter-Zeh in [HHW20] is not private, in the sense that the server can recover in polynomial time the index of the desired file with very high probability. The attack relies on the following observation. Removing rows…

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