This is an implementation of a simple Ethereum wallet in JavaScript, using the Ethers.js library. The wallet will hold a single private key along with its associated Ethereum address.
The Wallet class in the Ethers.js library holds: private key + address + ability to sign transactions.
- ethers.js
npm install --save ethers- Private Key
0x495d5c34c912291807c25d5e8300d20b749f6be44a178d5c50f167d495f3315a
- Password
p@$$w0rd~3
- Recipient Address
0x7725f560672A512e0d6aDFE7a761F0DbD8336aA7
First, create a function, which by a given private key returns a Wallet instance. The wallet instance has the wallet's private key, address, and functionality to sign.
Second, create a method that returns a random generated Wallet using ethers.Wallet.createRandom. This method creates a random mnemonic using entropy then from the hierarchical node, it derives once and creates a wallet from its private key. The instance stores the mnemonic and the derivation path.
Create a method called saveWalletToJSON, which takes a Wallet instance and a password and returns a JSON V3 Keystore. Use the wallet’s encrypt method.
Create a method that takes JSON and a password, decrypts the JSON and returns a wallet instance. Use ethers.Wallet.fromEncryptedJson(json, password).
Create a method that signs a transaction and returns it.
MI2: Module 3: E2