lighthouse/account_manager
Geoffry Song 8fde9a4016
Wallet creation: Make mnemonic length configurable, default to 24 words. (#1697)
## Issue Addressed

Fixes #1665.

## Proposed Changes

`lighthouse account_manager wallet create` now generates a 24-word
mnemonic. The user can override this by passing `--mnemonic-length 12`
(or another legal bip39 length).

## Additional Info

CLI `--help`:
```
        --mnemonic-length <MNEMONIC_LENGTH>       The number of words to use for the mnemonic phrase. [default: 24]
```

In case of an invalid argument:
```
% lighthouse account_manager wallet create --mnemonic-length 25
error: Invalid value for '--mnemonic-length <MNEMONIC_LENGTH>': Mnemonic length must be one of 12, 15, 18, 21, 24
```
2020-10-03 10:01:06 +10:00
..
src Wallet creation: Make mnemonic length configurable, default to 24 words. (#1697) 2020-10-03 10:01:06 +10:00
Cargo.toml Implement slashing protection interchange format (#1544) 2020-10-02 01:42:27 +00:00
README.md Added deterministic keypair generation. 2019-04-08 15:02:11 +10:00

Lighthouse Account Manager

The account manager (AM) is a stand-alone binary which allows users to generate and manage the cryptographic keys necessary to interact with Ethereum Serenity.

Roles

The AM is responsible for the following tasks:

  • Generation of cryptographic key pairs
    • Must acquire sufficient entropy to ensure keys are generated securely (TBD)
  • Secure storage of private keys
    • Keys must be encrypted while at rest on the disk (TBD)
    • The format is compatible with the validator client
  • Produces messages and transactions necessary to initiate staking on Ethereum 1.x (TPD)

Implementation

The AM is not a service, and does not run continuously, nor does it interact with any running services. It is intended to be executed separately from other Lighthouse binaries and produce files which can be consumed by them.&

Usage

Simply run ./account_manager generate to generate a new random private key, which will be automatically saved to the correct directory.

If you prefer to use our "deterministic" keys for testing purposes, simply run ./accounts_manager generate_deterministic -i <index>, where index is the validator index for the key. This will reliably produce the same key each time and save it to the directory.