node-x11-hash-algo example

node-x11-hash-algo.js

var x11 = require('node-x11-hash-algo');

String.prototype.hexEncode = function(){
    var hex, i;

    var result = "";
    for (i=0; i<this.length; i++) {
        hex = this.charCodeAt(i).toString(16);
        result += ("000"+hex).slice(-4);
    }

    return result
}

//var testString = "Hello world"; // you can get hex from any string to play with hashing
//var buffer = new Buffer(testString.hexEncode(), 'hex');
var testStringHex = "0200000040671063c3723d92122b9b3921ab24fc5131286ca407c36e24a502000000000094042ca1ec29fbc59a60a20e2ec37ed5418d39eec78fdd3acbc63b7993085084b8d30e556cb10b1b1e570100"; // actual block 0000000000055c2ee0acc13e97d97097ee47875d4dd286b6549a03e51b08c02c header
var buffer = new Buffer(testStringHex, 'hex');

var hashedData = x11.hash(buffer);

//console.log(testString, "\n", testString.hexEncode(), "\n", buffer);
console.log(testStringHex, "\n", buffer);
console.log(hashedData); 
console.log(hashedData.toString('hex')); // for block header example 2cc0081be5039a54b686d24d5d8747ee9770d9973ec1ace02e5c050000000000 - reversed