Creating Wallet Signer with EdexaClient

In blockchain-based applications, transactions need to be securely signed to prove their authenticity and ensure the integrity of their actions. The createWalletSigner method provided by the EdexaClient facilitates this by allowing users to create a wallet signer instance using their private key. This signer can then be used to authenticate and sign various transactions.

What is a Signer?

A signer in the context of blockchain refers to an entity that possesses the capability to authenticate and authorize transactions using cryptographic signatures. It uses a private key to produce these signatures, ensuring the integrity and authenticity of operations on the blockchain.

Method Signature

createWalletSigner(pvtKey: string): WalletSigner

Parameters

Parameter	Type	Description
pvtKey	string	The user's private key string. This is an essential and sensitive piece of information that proves the ownership of an Ethereum address and its associated funds.

Returns

• A WalletSigner instance that can be utilized to sign transactions or interact with Ethereum contracts.

Usage Example

Initialize the EdexaClient:

import { EdexaClient } from "@edexa/edexajs";
const edexaClient = new EdexaClient();

Use the createWalletSigner method to generate a wallet signer:

const privateKey = "your actual private key here"; // Always handle with care!
const signer = edexaClient.createWalletSigner(privateKey);

With the signer instance, you can now interact with various blockchain operations that require authentication or signing.

Safety Notes & Best Practices

1. Protect Private Keys: Your private key is an extremely sensitive piece of information. Exposure can lead to loss of funds or unauthorized actions on your behalf. Never hard-code it directly in scripts or applications, especially if they are shared or stored in public repositories.

2. Environment Variables: Consider storing private keys as environment variables or using secure vault services if deploying applications. This reduces the risk of exposure.

3. Rate Limits & Gas: When performing multiple operations, be aware of any rate limits in place. Additionally, transactions on the Ethereum network require gas, so ensure you have enough ETH in the associated account to cover transaction costs.

4. Test First: Before deploying any functionality in a production environment, always test your operations in a testnet environment to ensure everything works as expected without risking real funds.

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