Before there is an official tool to directly generate an offline transaction with the standard mina-generate-keypair generated private key, we can instead convert the key to the client-sdk compatible format and then use the client-sdk to generate the transaction.
A while ago I shared this idea with @nholland94, who in turn made a script that I then tweaked to use Docker and created this one. Thanks @nholland94 !
@nholland94's script minimizes the time that the private key is unencrypted by immediately creating the transaction as soon as the key is dumped.
Version 2 of this script replaces the key loading functionality from relying on the mina daemon via docker to doing everything through NodeJS -- thanks to Auro wallet ( https://github.com/bitcat365/auro-wallet-browser-extension/blob/0888a71dc6abde41ad72889c1826a722c3954553/src/background/accountService.js#L58 ) for the routine of loading the libsodium-encrypted wallet files.
- Install NodeJS, libsodium, and yarn on your system
On MacOS in a Terminal session (Terminal.app):
brew install node libsodiumNote: This process was tested as working with libsodium-1.0.18
npm install -g yarn-
Install docker on your system
-
Download this gist as a zip file and unzip and enter this directory in your Terminal.app
-
Pull the latest version of the dependencies
yarn install- Copy in your private key
Put a keys/ folder containing your (password protected) private key with chmod 700 permissions (this should already be set properly if you generated your keys using the minaprotocol.com docs) in this directory.
- Edit the
make-transaction.jsto point to your key
Change the line in main() to set the privateKeyPath to your key.
- Edit the
make-transaction.jsto form your transaction
Change these fields as appropriate for your transaction
{
to: 'B62qoozSJ5Zjz8m3LtRnmoejs425H38LfU6kYTrsoPPVy9hzrLc5HBM', // the receiver of the payment
amount: 10**9, // 1.0 mina -- in nanonmina (1 billion = 1.0 mina)
fee: 1 * 10**7, // 0.01 mina -- in nanonmina (1 billion = 1.0 mina)
nonce: 0 // the number of transactions you've made on this account already. you can find this in minaexplorer.com
}- Open a new terminal session
On MacOS, this is the Terminal.app program (or your favorite)
- Export your private key password as an environment variable
Change mypassword below with your password
export CODA_PRIVKEY_PASS=mypassword- Run the script generating the transaction in that Terminal.app session
node make-transaction.jsThis will make the transaction in a file called my-txn.json in this directory. You can view it with cat:
cat my-txn.json- Broadcast using your favorite tool
For example, https://minaexplorer.com/broadcast-tx