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    web3-s2g

    0.1.1 • Public • Published

    web3-s2g

    A nodejs library for interacting with the Infineon Securiy2Go SmartCard for signing transactions for ethereum blockchain based systems on a nodejs server. Since websites cannot directly interact with USB devices or NFC-Readers (web-nfc does NOT solve this issue in this case) this library works only for nodejs server instance.

    Requirements

    • A NFC Card reader that is supported by PCSC lite
    • In order to install the package you need to have installed in the system the pcsclite libraries. For example, in Debian/Ubuntu: apt-get install libpcsclite1 libpcsclite-dev
    • Access to an Ethereum compatible blockchain
    • A Security2Go NFC Card
    • Linux OS - tested with Ubuntu 18 LTS - but most other common Linux distros should do as well
    • libudev and libusb 1.0.8 or later
    • Node.js v10 LTS (tested with v10.15.3)
    • NPM (tested with v6.4.1)

    Example in js

    const web3 = require('web3');
    const web3s2g = require('web3-s2g');
    
    function wait(ms) {
      const start = new Date().getTime();
      let end = start;
      while (end < start + ms) {
        end = new Date().getTime();
      }
    }
    
    async function test() {
    
      console.log('started a test!');
      const cardSigner = new web3s2g.MinervaCardTransactionSigner(1, true);
      const web3Address = 'https://rpc.tau1.artis.network';
    
      const web3Options = {
        transactionSigner : cardSigner,
      };
    
      const web3Instance = new web3(web3Address, undefined, web3Options);
    
      const transaction = {
        from: '0x756269ce7e0285670ecbd234f230645efba049d3' /* requires to be the address of the MinervaCard */,
        to:   '0x3939a535d686da047c589c80538ceb6cffc933ee',
        value: '0x1000',
        gasPrice: web3Instance.utils.toHex('100000000000'), // 100 gwei
        gas:  web3Instance.utils.toHex('21000'),
      };
    
      console.log('sending transaction...');
      const result = await web3Instance.eth.sendTransaction(transaction);
      console.log('transaction sent!', result);
    
    }
    
    test();
    wait(600000);
    

    troubleshooting

    Linux

    There are known problems with PC/SC Smart Card Daemon (pcscd). Sometimes the cardreader stops working immediatly after plugging it in or booting up the computer. A restart of the daemon can help in this case systemctl restart pcscd

    Install

    npm i web3-s2g

    DownloadsWeekly Downloads

    0

    Version

    0.1.1

    License

    Apache 2.0

    Unpacked Size

    75.2 kB

    Total Files

    14

    Last publish

    Collaborators

    • surfingnerd