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Halo2 Circuit Development: Sin7Y Tech Review (20) | HackerNoon

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In the previous article, we discussed how to use halo2 for circuit development. In this article, we will illustrate what we need to pay attention to when developing circuits. When writing this article, we referred to the halo2 code, version f9b3ff2aef09a5a3cb5489d0e7e747e9523d2e6e. Before we begin, let’s review the most critical content, namely the circuit definition. As usual, when developing circuits, we need to implement this trait: As a result of the preceding definition, the halo2 circuit development consists of two critical functions: configure and synthesize. The former establishes the gate and defines the constraints, whereas the latter assigns witness and public data to the constraints. Let’s take a closer look at what happens in detail during circuit development in this article. As a starting point, let’s use the official simple-example. According to the declaration of the configure function, when defining a circuit, the ConstraintSystem will be modified and it will return to

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