Learn about the splitSignature utils method

Introduction

The splitSignature method is used to split an Ethereum signature hex string into separate parts. The signature must be in a specific format for this method to work.

Usage

This method should be used when you want to split a compact Ethereum signature into its individual components. This can be useful when working with Ethereum signatures in your code, as it allows you to extract the relevant values from a signature for further processing.

Here’s a simple code example to demonstrate how to use this method:

Javascript

1 const { Utils } = require("alchemy-sdk");
2 
3 // Flat-format; this is the format provided by JSON-RPC responses
4 let flatSig =
5   "0x0ba9770fd8778383f6d56faadc71e17b75f0d6e3ff0a408d5e6c4cee3bd70a16" +
6   "3574da0ebfb1eaac261698b057b342e52ea53f85287272cea471a4cda41e3466" +
7   "1b";
8 
9 let expandedSig = Utils.splitSignature(flatSig);
10 
11 console.log(expandedSig);
12 
13 // {
14 //    r: "0x0ba9770fd8778383f6d56faadc71e17b75f0d6e3ff0a408d5e6c4cee3bd70a16",
15 //    s: "0x3574da0ebfb1eaac261698b057b342e52ea53f85287272cea471a4cda41e3466",
16 //    recoveryParam: 0,
17 //    v: 27
18 // }