Encoding ctx1

src/core/config/Categories.json

@@ -66,6 +66,7 @@
             "Blowfish Decrypt",
             "DES Encrypt",
             "DES Decrypt",
+            "Citrix CTX1 Encode",
             "Triple DES Encrypt",
             "Triple DES Decrypt",
             "RC2 Encrypt",

src/core/operations/EncodeCitrixCTX1.mjs

@@ -0,0 +1,50 @@
+/**
+ * @author n1474335 [n1474335@gmail.com]
+ * @copyright Crown Copyright 2017
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation";
+import cptable from "../vendor/js-codepage/cptable.js";
+
+/**
+ * Encode Citrix CTX1 class
+ */
+class EncodeCitrixCTX1 extends Operation {
+
+    /**
+     * EncodeCitrixCTX1 constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "Citrix CTX1 Encode";
+        this.module = "Ciphers";
+        this.description = "Encodes strings to Citrix CTX1 password format.";
+        this.infoURL = "https://www.reddit.com/r/AskNetsec/comments/1s3r6y/citrix_ctx1_hash_decoding/";
+        this.inputType = "string";
+        this.outputType = "string";
+        this.args = [];
+    }
+
+    /**
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    run(input, args) {
+        let utf16pass = Buffer.from(cptable.utils.encode(1200, input));
+        let result = [];
+        let temp = 0
+        for (let i = 0; i < utf16pass.length; i++) {
+            temp = utf16pass[i] ^ 0xa5 ^ temp;
+            result.push(((temp >> 4) & 0xf) + 0x41);
+            result.push((temp & 0xf) + 0x41);
+        }
+
+        return new TextDecoder("utf-8").decode(Buffer.from(result));
+    }
+
+}
+
+export default EncodeCitrixCTX1;