/**
 * int 转 byte
 * @param i
 */
function intToByte(i) {
    var b = i & 0xFF;
    var c = 0;
    if (b >= 128) {
        c = b % 128;
        c = -1 * (128 - c);
    } else {
        c = b;
    }
    return c;
}

function stringToHex(str){
    var val = "";
    for (var i = 0; i < str.length; i++) {
        var v = str.charCodeAt(i).toString(16);
        if ( v.length < 2 ) {
            v = "0" + v;
        }
        val += v;
    }
    return val
}
function toHex(d) { return ("0"+(Number(d).toString(16))).slice(-2).toUpperCase() }

function mac( hex ) {
    if ( ! /^([A-Fa-f0-9][A-Fa-f0-9])+$/.test( hex ) ) {
        throw "hex 格式错误"
    }
    var checkNum = intToByte(0);
    var arrBytes = new Array();
    for ( var i = 0 ; i < hex.length; i+=2 ) {
        var v = intToByte(parseInt(hex[i] + hex[i+1], 16))
        arrBytes.push( v )
        checkNum = checkNum ^ v;
    }

    return toHex( checkNum & 0xFF )
}

console.log( mac("FFFF010203EEEECCCC7777223311") )


function xor(d1, d2, d3) {
    if ( 32 !== d1.length || 32 !== d2.length || 32 !== d3.length ) {
        throw "输入格式错误"
    }

    var a1 = hexToBytes(d1);
    var a2 = hexToBytes(d2);
    var a3 = hexToBytes(d3);

    var data = [];
    for ( var i = 0; i < 16 ; i++){
        data[ i ] = a1[ i ] ^ a2[ i ] ^ a3[ i ]
    }

    return bytesToHex( data )
}

var r = xor("11111111111111111111111111111111", "22222222222222222222222222222222", "33333333333333333333333333333333")
console.log( r )

// Des3
// npm i crypto-js
function hexToBytes(hex) {
    for (var bytes = [], c = 0; c < hex.length; c += 2)
        bytes.push(parseInt(hex.substr(c, 2), 16));
    return bytes;
}

function bytesToHex(bytes) {
    for (var hex = [], i = 0; i < bytes.length; i++) {
        hex.push((bytes[i] >>> 4).toString(16));
        hex.push((bytes[i] & 0xF).toString(16));
    }
    return hex.join("");
}



const DES = require('./jssrc/des.js')
var des = new DES();
var key = hexToBytes("12345678123456781234567812345678")
var ret = des.CalDES(hexToBytes("00000000000000000000000000000000"), key);
console.log( ret )

des = new DES();
key = hexToBytes("12345678123456781234567812345670")
ret = des.CalDES(hexToBytes("00000000000000000000000000000000"), key);
console.log( ret )
//
//
// const sm4 = require('./jssrc/sm4.js')
// ret = sm4.SM4CryptECB("000000000000000011", 1 , "12345678123456781234567812345678")
// console.log( ret )
//



// const tripledes = require("crypto-js/tripledes");
//
// var value = "123";CryptoJS.enc.Hex.parse("0000000000000000");
// var key = "12345678123456781234567812345678"; CryptoJS.enc.Hex.parse("12345678123456781234567812345678");
//
// var encrypted = tripledes.encrypt(value , key);
// var decrypted = tripledes.decrypt(encrypted, key);
//
// console.log( "encrypted", encrypted.toString('hex') )
// console.log( "decrypted", decrypted )