EthSigner acts as a proxy service by forwarding requests to the Ethereum client. When EthSigner receives a transaction it generates a signature using the stored private key, and forwards the signed transaction to the Ethereum client.
EthSigner can sign transactions with keys stored in:
- A V3 keystore file stored on a file system accessible by the host.
- Hashicorp Vault.
- Azure Key Vault.
The transaction process when using EthSigner is: