ishish.io
ishish.io
Recently I was experimenting with FuelVM - an optimistic rollup (in the default configuration, there are more options for setup - see below) working on top of Ethereum that provides Smart Contract functionality and is focused on delivering significantly higher transaction speeds and, as a side effect, lowering the transaction fees. You can learn more about the Fuel VM project on the Fuel Labs website.
The speed goals are delivered by a combination of techniques that FuelVM employs. First one being parallelization of the transaction execution thanks to the UTXO execution model. It allows leveraging OS multi-threading and CPU cores for parallel execution of transactions in a block which significantly reduces the execution time when compared to single-threaded execution.
Another aspect that speeds up the whole solution is the use of Rust language for implementing the node. Rust is a secure language in a sense that it prevents many types of weaknesses from being introduced into the program at the compilation time. Various strategies for memory management, variables lifetimes, concurrency etc.. are used to eliminate such weaknesses classes such as:
All of these weaknesses were often resulting in serious vulnerabilities identified in the final products that were written in C, C++, etc.
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The end-user perspective is quite easy. Based on available functionality, there aren't many use-cases for this actor and, in terms of functional classes, not many types of threats. In fact, there is one major use-case which is: End-user is signing the transaction and submitting it to the network.
Under the term of transaction we include the following:
Let's dissect the use case using the STRIDE threat modelling methodology.