@cloud-cryptographic-wallet/ethers-adapter

This package allows you to use Signer of ethers with a variety of cloud service key management systems.

Support Cloud Services

• AWS KMS
• Cloud Key Management

Install

1$ npm install @cloud-cryptographic-wallet/ethers-adapter ethers

With Cloud Service

AWS KMS

1$ npm install @cloud-cryptographic-wallet/aws-kms-signer

1import { ethers } from "ethers";
2import { AwsKmsSigner } from "@cloud-cryptographic-wallet/aws-kms-signer";
3import { EthersAdapter } from "@cloud-cryptographic-wallet/ethers-adapter";
4
5async function sendTxUsingAwsKmsSigner(rpcUrl: string) {
6  const region = "us-east-1";
7  const keyId = "e9005048-475f-4767-9f2d-0d1fb0c89caf";
8  const awsKmsSigner = new AwsKmsSigner(keyId, { region });
9
10  const provider = new ethers.providers.JsonRpcProvider(rpcUrl);
11  const signer = new EthersAdapter({ signer: awsKmsSigner }).connect(provider);
12
13  const address = await signer.getAddress();
14  console.log(address);
15  console.log(ethers.utils.formatEther(await signer.getBalance()));
16
17  const tx = await signer.sendTransaction({
18    from: address,
19    to: address,
20  });
21
22  console.log({ tx });
23
24  const receipt = await tx.wait();
25
26  console.log({ receipt });
27}

Cloud Key Management

1$ npm install @cloud-cryptographic-wallet/cloud-kms-signer

1import { ethers } from "ethers";
2import { CloudKmsSigner } from "@cloud-cryptographic-wallet/cloud-kms-signer";
3import { EthersAdapter } from "@cloud-cryptographic-wallet/ethers-adapter";
4
5async function sendTxUsingCloudKmsSigner(rpcUrl: string) {
6  const name =
7    "projects/aws-kms-provider/locations/asia-northeast1/keyRings/for-e2e-test/cryptoKeys/for-e2e-test/cryptoKeyVersions/1";
8  const cloudKmsSigner = new CloudKmsSigner(name);
9
10  const provider = new ethers.providers.JsonRpcProvider(rpcUrl);
11  const signer = new EthersAdapter({ signer: cloudKmsSigner }).connect(
12    provider
13  );
14
15  const address = await signer.getAddress();
16  console.log(address);
17  console.log(ethers.utils.formatEther(await signer.getBalance()));
18
19  const tx = await signer.sendTransaction({
20    from: address,
21    to: address,
22  });
23
24  console.log({ tx });
25
26  const receipt = await tx.wait();
27
28  console.log({ receipt });
29}