Merge branch 'math' of https://github.com/bwhitn/CyberChef into bwhitn-math
n1474335
commit
c1fb6d9776
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@ -113,7 +113,7 @@ const Categories = [
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]
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},
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{
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name: "Logical operations",
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name: "Arithmetic / Logic",
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ops: [
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"XOR",
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"XOR Brute Force",
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@ -127,6 +127,13 @@ const Categories = [
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"Rotate left",
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"Rotate right",
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"ROT13",
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"Sum",
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"Subtract",
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"Multiply",
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"Divide",
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"Mean",
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"Median",
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"Standard Deviation",
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]
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},
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{
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@ -1,3 +1,4 @@
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import Arithmetic from "../operations/Arithmetic.js";
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import Base from "../operations/Base.js";
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import Base58 from "../operations/Base58.js";
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import Base64 from "../operations/Base64.js";
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@ -676,6 +677,97 @@ const OperationConfig = {
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}
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]
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},
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"Sum": {
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module: "Default",
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description: "Sums a list of numbers. If an item in the string is not a number it is excluded from the list.<br><br>e.g. <code>0x0a 8 .5</code> becomes <code>18.5</code>",
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inputType: "string",
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outputType: "string",
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args: [
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{
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name: "Delimiter",
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type: "option",
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value: Arithmetic.DELIM_OPTIONS
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}
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]
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},
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"Subtract": {
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module: "Default",
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description: "Subtracts a list of numbers. If an item in the string is not a number it is excluded from the list.<br><br>e.g. <code>0x0a 8 .5</code> becomes <code>1.5</code>",
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inputType: "string",
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outputType: "string",
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args: [
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{
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name: "Delimiter",
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type: "option",
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value: Arithmetic.DELIM_OPTIONS
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}
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]
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},
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"Multiply": {
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module: "Default",
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description: "Multiplies a list of numbers. If an item in the string is not a number it is excluded from the list.<br><br>e.g. <code>0x0a 8 .5</code> becomes <code>40</code>",
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inputType: "string",
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outputType: "string",
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args: [
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{
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name: "Delimiter",
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type: "option",
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value: Arithmetic.DELIM_OPTIONS
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}
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]
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},
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"Divide": {
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module: "Default",
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description: "Divides a list of numbers. If an item in the string is not a number it is excluded from the list.<br><br>e.g. <code>0x0a 8 .5</code> becomes <code>2.5</code>",
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inputType: "string",
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outputType: "string",
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args: [
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{
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name: "Delimiter",
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type: "option",
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value: Arithmetic.DELIM_OPTIONS
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}
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]
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},
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"Mean": {
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module: "Default",
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description: "Computes the mean (average) of a number list. If an item in the string is not a number it is excluded from the list.<br><br>e.g. <code>0x0a 8 .5 .5</code> becomes <code>4.75</code>",
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inputType: "string",
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outputType: "string",
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args: [
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{
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name: "Delimiter",
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type: "option",
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value: Arithmetic.DELIM_OPTIONS
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}
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]
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},
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"Median": {
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module: "Default",
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description: "Computes the median of a number list. If an item in the string is not a number it is excluded from the list.<br><br>e.g. <code>0x0a 8 1 .5</code> becomes <code>4.5</code>",
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inputType: "string",
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outputType: "string",
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args: [
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{
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name: "Delimiter",
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type: "option",
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value: Arithmetic.DELIM_OPTIONS
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}
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]
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},
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"Standard Deviation": {
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module: "Default",
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description: "Computes the standard deviation of a number list. If an item in the string is not a number it is excluded from the list.<br><br>e.g. <code>0x0a 8 .5</code> becomes <code>4.089281382128433</code>",
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inputType: "string",
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outputType: "string",
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args: [
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{
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name: "Delimiter",
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type: "option",
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value: Arithmetic.DELIM_OPTIONS
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}
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]
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},
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"From Hexdump": {
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module: "Default",
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description: "Attempts to convert a hexdump back into raw data. This operation supports many different hexdump variations, but probably not all. Make sure you verify that the data it gives you is correct before continuing analysis.",
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@ -1,4 +1,5 @@
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import FlowControl from "../../FlowControl.js";
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import Arithmetic from "../../operations/Arithmetic.js";
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import Base from "../../operations/Base.js";
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import Base58 from "../../operations/Base58.js";
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import Base64 from "../../operations/Base64.js";
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@ -159,6 +160,13 @@ OpModules.Default = {
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"Return": FlowControl.runReturn,
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"Comment": FlowControl.runComment,
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"PHP Deserialize": PHP.runDeserialize,
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"Sum": Arithmetic.runSum,
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"Subtract": Arithmetic.runSub,
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"Multiply": Arithmetic.runMulti,
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"Divide": Arithmetic.runDiv,
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"Mean": Arithmetic.runMean,
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"Median": Arithmetic.runMedian,
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"Standard Deviation": Arithmetic.runStdDev,
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/*
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@ -0,0 +1,243 @@
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import Utils from "../Utils.js";
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/**
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* Math operations on numbers.
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*
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* @author bwhitn [brian.m.whitney@outlook.com]
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* @copyright Crown Copyright 2016
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* @license Apache-2.0
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*
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* @namespace
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*/
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const Arithmetic = {
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/**
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* @constant
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* @default
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*/
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DELIM_OPTIONS: ["Space", "Comma", "Semi-colon", "Colon", "Line feed", "CRLF"],
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/**
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* Splits a string based on a delimiter and calculates the sum of numbers.
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*
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* @param {string} input
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* @param {Object[]} args
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* @returns {string}
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*/
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runSum: function(input, args) {
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const val = Arithmetic._sum(Arithmetic._createNumArray(input, args[0]));
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return typeof(val) === "number" ? val.toString() : "";
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},
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/**
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* Splits a string based on a delimiter and subtracts all the numbers.
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*
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* @param {string} input
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* @param {Object[]} args
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* @returns {string}
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*/
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runSub: function(input, args) {
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let val = Arithmetic._sub(Arithmetic._createNumArray(input, args[0]));
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return typeof(val) === "number" ? val.toString() : "";
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},
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/**
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* Splits a string based on a delimiter and multiplies the numbers.
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*
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* @param {string} input
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* @param {Object[]} args
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* @returns {string}
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*/
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runMulti: function(input, args) {
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let val = Arithmetic._multi(Arithmetic._createNumArray(input, args[0]));
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return typeof(val) === "number" ? val.toString() : "";
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},
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/**
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* Splits a string based on a delimiter and divides the numbers.
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*
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* @param {string} input
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* @param {Object[]} args
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* @returns {string}
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*/
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runDiv: function(input, args) {
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let val = Arithmetic._div(Arithmetic._createNumArray(input, args[0]));
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return typeof(val) === "number" ? val.toString() : "";
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},
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/**
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* Splits a string based on a delimiter and computes the mean (average).
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*
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* @param {string} input
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* @param {Object[]} args
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* @returns {string}
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*/
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runMean: function(input, args) {
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let val = Arithmetic._mean(Arithmetic._createNumArray(input, args[0]));
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return typeof(val) === "number" ? val.toString() : "";
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},
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/**
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* Splits a string based on a delimiter and finds the median.
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*
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* @param {string} input
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* @param {Object[]} args
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* @returns {string}
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*/
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runMedian: function(input, args) {
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let val = Arithmetic._median(Arithmetic._createNumArray(input, args[0]));
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return typeof(val) === "number" ? val.toString() : "";
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},
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/**
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* splits a string based on a delimiter and computes the standard deviation.
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*
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* @param {string} input
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* @param {Object[]} args
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* @returns {string}
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*/
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runStdDev: function(input, args) {
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let val = Arithmetic._stdDev(Arithmetic._createNumArray(input, args[0]));
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return typeof(val) === "number" ? val.toString() : "";
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},
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/**
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* Converts a string array to a number array.
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*
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* @param {string[]} input
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* @param {string} delim
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* @returns {number[]}
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*/
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_createNumArray: function(input, delim) {
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delim = Utils.charRep[delim || "Space"];
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let splitNumbers = input.split(delim),
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numbers = [],
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num;
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for (let i = 0; i < splitNumbers.length; i++) {
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if (splitNumbers[i].indexOf(".") >= 0) {
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num = parseFloat(splitNumbers[i].trim());
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} else {
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num = parseInt(splitNumbers[i].trim(), 0);
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}
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if (!isNaN(num)) {
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numbers.push(num);
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}
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}
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return numbers;
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},
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/**
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* Adds an array of numbers and returns the value.
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*
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* @private
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* @param {number[]} data
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* @returns {number}
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*/
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_sum: function(data) {
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if (data.length > 0) {
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return data.reduce((acc, curr) => acc + curr);
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}
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},
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/**
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* Subtracts an array of numbers and returns the value.
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*
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* @private
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* @param {number[]} data
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* @returns {number}
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*/
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_sub: function(data) {
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if (data.length > 0) {
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return data.reduce((acc, curr) => acc - curr);
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}
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},
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/**
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* Multiplies an array of numbers and returns the value.
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*
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* @private
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* @param {number[]} data
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* @returns {number}
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*/
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_multi: function(data) {
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if (data.length > 0) {
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return data.reduce((acc, curr) => acc * curr);
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}
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},
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/**
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* Divides an array of numbers and returns the value.
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*
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* @private
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* @param {number[]} data
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* @returns {number}
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*/
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_div: function(data) {
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if (data.length > 0) {
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return data.reduce((acc, curr) => acc / curr);
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}
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},
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/**
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* Computes mean of a number array and returns the value.
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*
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* @private
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* @param {number[]} data
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* @returns {number}
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*/
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_mean: function(data) {
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if (data.length > 0) {
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return Arithmetic._sum(data) / data.length;
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}
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},
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/**
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* Computes median of a number array and returns the value.
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*
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* @private
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* @param {number[]} data
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* @returns {number}
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*/
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_median: function (data) {
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if ((data.length % 2) === 0) {
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let first, second;
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data.sort(function(a, b){
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return a - b;
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});
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first = data[Math.floor(data.length / 2)];
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second = data[Math.floor(data.length / 2) - 1];
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return Arithmetic._mean([first, second]);
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} else {
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return data[Math.floor(data.length / 2)];
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}
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},
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/**
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* Computes standard deviation of a number array and returns the value.
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*
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* @private
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* @param {number[]} data
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* @returns {number}
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*/
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_stdDev: function (data) {
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if (data.length > 0) {
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let avg = Arithmetic._mean(data);
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let devSum = 0;
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for (let i = 0; i < data.length; i++) {
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devSum += (data[i] - avg) ** 2;
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}
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return Math.sqrt(devSum / data.length);
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}
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},
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};
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export default Arithmetic;
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