How to make a transaction via KeyChain

1. Download and install KeyChain

For Mac Os: https://github.com/arrayio/array-io-keychain/releases/tag/0.5

2. Generate the key

start with command wscat -c ws://localhost:16384/ and send command to generate key

{
  "command": "create",
  "params":
   {
      "keyname": "test1",
      "encrypted": true,
      "curve": "secp256k1",
      "cipher": "aes256"
  }
}

then request public key via

{ 
  "command": "public_key",
  "params": 
  {
    "keyname": "KEY_NAME"
  }
}

change KEY_NAME to yours.

3. Calculate address from publicKey

const ethUtil = require('ethereumjs-util');
const publicKey = 'YOUR_PUBLIC_KEY';
const fromAdd = ethUtil.publicToAddress(publicKey).toString('hex');

4. Transfer money to the address correspond to public key

In case if you work with ropsten https://faucet.ropsten.be/

5. Check balance for address, it should have enough ether for success transfer.

web3.eth.getBalance(fromAdd) 
.then(console.log);

6. Sign transaction with the key that you generated

Example code here: https://gist.github.com/cypherpunk99/3e1314f8cc62cd675fa5c8f7bbe97923

7. Check Etherscan

https://ropsten.etherscan.io/address/0x1ba05dad1abe91fdea3afffe9676b59076ce0ece