Overview

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.

note

• The file-based-signer, hashicorp-signer, and azure-signer command line options are used for a single key only.
• The multikey-signer command line option is used for one or more keys.

The transaction process when using EthSigner is: