Improving rippled: Leveraging passive model inference techniques to test large decentralized systems
S. Karayalçin (TU Delft - Electrical Engineering, Mathematics and Computer Science)
S. Roos – Mentor (TU Delft - Data-Intensive Systems)
S. Prabhu Kumble – Graduation committee member (TU Delft - Data-Intensive Systems)
RR Venkatesha Prasad – Graduation committee member (TU Delft - Embedded Systems)
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Abstract
Blockchains and cryptocurrencies, like Ripple, are becoming more widely used. Testing the large decentralized systems these technologies on is complex, as the behavior of the system is dependent on many external factors. We will examine the viability of using passive model inference techniques to test the systems based on the network traffic they produce. Passive inference techniques have been used extensively to model and test different types of systems. However, it is unclear how well passive model inference techniques work for inferring models of large decentralized systems based on the network traffic that these systems produce. Here we show that detecting bugs in the implementations of decentralized protocols is possible. These results were achieved by simulating a version of the Ripple network and modeling the workings of a node in this network. We also simulated the network with defective nodes and by observing the different models generated, were able to detect these bugs. Our results suggest that using passive model inference techniques on network traffic can help test large decentralized systems.