CyberChef/src/core/operations/NetBIOS.js

58 lines
1.1 KiB
JavaScript

/**
* NetBIOS operations.
*
* @author n1474335 [n1474335@gmail.com]
* @copyright Crown Copyright 2017
* @license Apache-2.0
*
* @namespace
*/
var NetBIOS = module.exports = {
/**
* @constant
* @default
*/
OFFSET: 65,
/**
* Encode NetBIOS Name operation.
*
* @param {byteArray} input
* @param {Object[]} args
* @returns {byteArray}
*/
runEncodeName: function(input, args) {
var output = [],
offset = args[0];
for (var i = 0; i < input.length; i++) {
output.push((input[i] >> 4) + offset);
output.push((input[i] & 0xf) + offset);
}
return output;
},
/**
* Decode NetBIOS Name operation.
*
* @param {byteArray} input
* @param {Object[]} args
* @returns {byteArray}
*/
runDecodeName: function(input, args) {
var output = [],
offset = args[0];
for (var i = 0; i < input.length; i += 2) {
output.push(((input[i] - offset) << 4) |
((input[i + 1] - offset) & 0xf));
}
return output;
},
};