node-red-contrib-cryptography/aes256/sha256.js

Simple cryptography, hash with SHA-256 and RIPEMD-160

module.exports = function(RED) {

    var NodeName = 'hash sha256';

    function Sha256HashNode(config) {

        RED.nodes.createNode(this,config);
        let crypto;
        try {
          crypto = require('crypto');
        } catch (err) {
          console.log('Crypto support is disabled!');
        }
        var algorithm = 'sha256';

        function hash(text){
          const hash = crypto.createHash(algorithm);
          hash.update(text);
          return hash.digest('hex');
        }

        var node = this;
        this.on('input', function(msg) {
            msg.payload = hash(msg.payload);
            node.send(msg);
        });
    }
    RED.nodes.registerType(NodeName,Sha256HashNode);
}