This repo shows how to sign an Ethereum transaction using AWS KMS.

Please see my medium article for a detailed code walk-through.

1. Create ECDSA secp256k1 key in AWS KMS
2. Create AWS IAM user with programmatic access to AWS KMS.
3. For the Tx to go through, you need to provide a valid web3 provider (e.g. Infura)
4. Run the script to generate the Ethereum address and fund the Ethereum account to pay for the transaction gas.