mirror of https://github.com/gchq/CyberChef.git
ESM: Ported AES operations
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n1474335
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/**
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* @author n1474335 [n1474335@gmail.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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import Operation from "../Operation";
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import Utils from "../Utils";
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import forge from "node-forge/dist/forge.min.js";
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/**
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* AES Decrypt operation
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*/
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class AESDecrypt extends Operation {
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/**
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* AESDecrypt constructor
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*/
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constructor() {
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super();
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this.name = "AES Decrypt";
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this.module = "Ciphers";
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this.description = "Advanced Encryption Standard (AES) is a U.S. Federal Information Processing Standard (FIPS). It was selected after a 5-year process where 15 competing designs were evaluated.<br><br><b>Key:</b> The following algorithms will be used based on the size of the key:<ul><li>16 bytes = AES-128</li><li>24 bytes = AES-192</li><li>32 bytes = AES-256</li></ul><br><br><b>IV:</b> The Initialization Vector should be 16 bytes long. If not entered, it will default to 16 null bytes.<br><br><b>Padding:</b> In CBC and ECB mode, PKCS#7 padding will be used.<br><br><b>GCM Tag:</b> This field is ignored unless 'GCM' mode is used.";
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this.inputType = "string";
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this.outputType = "string";
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this.args = [
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{
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"name": "Key",
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"type": "toggleString",
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"value": "",
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"toggleValues": ["Hex", "UTF8", "Latin1", "Base64"]
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},
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{
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"name": "IV",
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"type": "toggleString",
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"value": "",
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"toggleValues": ["Hex", "UTF8", "Latin1", "Base64"]
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},
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{
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"name": "Mode",
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"type": "option",
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"value": ["CBC", "CFB", "OFB", "CTR", "GCM", "ECB"]
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},
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{
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"name": "Input",
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"type": "option",
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"value": ["Hex", "Raw"]
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},
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{
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"name": "Output",
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"type": "option",
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"value": ["Raw", "Hex"]
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},
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{
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"name": "GCM Tag",
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"type": "toggleString",
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"value": "",
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"toggleValues": ["Hex", "UTF8", "Latin1", "Base64"]
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}
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];
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}
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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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run(input, args) {
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const key = Utils.convertToByteArray(args[0].string, args[0].option),
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iv = Utils.convertToByteArray(args[1].string, args[1].option),
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mode = args[2],
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inputType = args[3],
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outputType = args[4],
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gcmTag = Utils.convertToByteString(args[5].string, args[5].option);
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if ([16, 24, 32].indexOf(key.length) < 0) {
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return `Invalid key length: ${key.length} bytes
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The following algorithms will be used based on the size of the key:
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16 bytes = AES-128
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24 bytes = AES-192
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32 bytes = AES-256`;
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}
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input = Utils.convertToByteString(input, inputType);
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const decipher = forge.cipher.createDecipher("AES-" + mode, key);
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decipher.start({
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iv: iv,
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tag: gcmTag
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});
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decipher.update(forge.util.createBuffer(input));
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const result = decipher.finish();
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if (result) {
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return outputType === "Hex" ? decipher.output.toHex() : decipher.output.getBytes();
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} else {
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return "Unable to decrypt input with these parameters.";
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}
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}
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}
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export default AESDecrypt;
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@ -0,0 +1,103 @@
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/**
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* @author n1474335 [n1474335@gmail.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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import Operation from "../Operation";
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import Utils from "../Utils";
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import forge from "node-forge/dist/forge.min.js";
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/**
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* AES Encrypt operation
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*/
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class AESEncrypt extends Operation {
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/**
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* AESEncrypt constructor
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*/
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constructor() {
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super();
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this.name = "AES Encrypt";
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this.module = "Ciphers";
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this.description = "Advanced Encryption Standard (AES) is a U.S. Federal Information Processing Standard (FIPS). It was selected after a 5-year process where 15 competing designs were evaluated.<br><br><b>Key:</b> The following algorithms will be used based on the size of the key:<ul><li>16 bytes = AES-128</li><li>24 bytes = AES-192</li><li>32 bytes = AES-256</li></ul>You can generate a password-based key using one of the KDF operations.<br><br><b>IV:</b> The Initialization Vector should be 16 bytes long. If not entered, it will default to 16 null bytes.<br><br><b>Padding:</b> In CBC and ECB mode, PKCS#7 padding will be used.";
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this.inputType = "string";
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this.outputType = "string";
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this.args = [
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{
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"name": "Key",
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"type": "toggleString",
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"value": "",
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"toggleValues": ["Hex", "UTF8", "Latin1", "Base64"]
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},
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{
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"name": "IV",
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"type": "toggleString",
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"value": "",
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"toggleValues": ["Hex", "UTF8", "Latin1", "Base64"]
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},
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{
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"name": "Mode",
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"type": "option",
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"value": ["CBC", "CFB", "OFB", "CTR", "GCM", "ECB"]
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},
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{
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"name": "Input",
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"type": "option",
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"value": ["Raw", "Hex"]
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},
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{
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"name": "Output",
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"type": "option",
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"value": ["Hex", "Raw"]
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}
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];
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}
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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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run(input, args) {
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const key = Utils.convertToByteArray(args[0].string, args[0].option),
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iv = Utils.convertToByteArray(args[1].string, args[1].option),
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mode = args[2],
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inputType = args[3],
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outputType = args[4];
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if ([16, 24, 32].indexOf(key.length) < 0) {
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return `Invalid key length: ${key.length} bytes
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The following algorithms will be used based on the size of the key:
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16 bytes = AES-128
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24 bytes = AES-192
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32 bytes = AES-256`;
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}
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input = Utils.convertToByteString(input, inputType);
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const cipher = forge.cipher.createCipher("AES-" + mode, key);
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cipher.start({iv: iv});
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cipher.update(forge.util.createBuffer(input));
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cipher.finish();
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if (outputType === "Hex") {
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if (mode === "GCM") {
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return cipher.output.toHex() + "\n\n" +
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"Tag: " + cipher.mode.tag.toHex();
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}
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return cipher.output.toHex();
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} else {
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if (mode === "GCM") {
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return cipher.output.getBytes() + "\n\n" +
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"Tag: " + cipher.mode.tag.getBytes();
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}
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return cipher.output.getBytes();
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}
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}
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}
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export default AESEncrypt;
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@ -69,6 +69,10 @@ module.exports = {
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exclude: /node_modules\/(?!jsesc)/,
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loader: "babel-loader?compact=false"
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},
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{
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test: /forge.min.js$/,
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loader: "imports-loader?jQuery=>null"
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},
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{
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test: /\.css$/,
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use: ExtractTextPlugin.extract({
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