memkey

Memory Key tool

Memkey is a simple command line tool to ease the creation of Ethereum private and public keys that can rely on the owner's memory.

Use this tool if:

• You want to be able to recover your Ethereum Private Key by yourself
• Prefer to have a secret passphrase as the seed of your private key instead of random content
• Don't want to depend on third party wallets to handle your money
• Expect your computer's disk, smartphones, dongles, etc. not to last forever

Installation

After you install NodeJS:

npm install -g memkey

Usage

Private Key

Generate a private key and public address from your passphrase:

$ memkey from "my hopefully long passphrase"
Ethereum Memory Key Tool

Passphrase:     my hopefully long passphrase
Private Key:    cb738ca99e9c5b646806227749c6623a0c576b9a7d7994aa5e5615c458d805f0
Public Address: 0x882458d0e7fb8a927983a64e9177fc0977604817

Important: Make sure that you will be able to remember this exact passphrase (or store the private key in a safe place otherwise).

Important: The passphrase is case sensitive.

Public address

To get the public address from an Ethereum private key:

$ memkey addr cb738ca99e9c5b646806227749c6623a0c576b9a7d7994aa5e5615c458d805f0
Ethereum Memory Key Tool

Public Address: 0x882458d0e7fb8a927983a64e9177fc0977604817

As expected, given the private key we generated before, the public address is exactly the same as the one above.

Future

In order to avoid versioning confusion and private key mismatch, any future release/algorithm of memkey will use a different package name (memkey2, memkey3, etc.) instead of forcing to manually install specific npm versions like memkey@1.0.0.

No updates will break the current setup.

Disclaimer

• Ethereum coins (Ether) represent a highly-volatile market (as of 2017). Operate at your own risk.
• This tool is intended for early adopters with a minimum level of tech skills.
• The correct use of this tool and the keys generated with it is your own responsibility.

Credits

Jordi Moraleda